*{-webkit-tap-highlight-color:transparent}body.no-scroll{overflow:hidden;touch-action:none;pointer-events:none}.dashboard-card{position:relative}.content-loading{filter:blur(4px);pointer-events:none}.spinner-container{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#00000080;display:flex;justify-content:center;align-items:center;z-index:9999;pointer-events:auto}.input-error{border-color:var(--color-error);animation:shake .5s}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-5px)}75%{transform:translate(5px)}}.btn-back{position:absolute;top:20px;left:20px;background:transparent;border:none;cursor:pointer;padding:5px;z-index:10}:root{--swiper-theme-color: #007aff}:host{position:relative;display:block;margin-left:auto;margin-right:auto;z-index:1}.swiper{margin-left:auto;margin-right:auto;position:relative;overflow:hidden;list-style:none;padding:0;z-index:1;display:block}.swiper-vertical>.swiper-wrapper{flex-direction:column}.swiper-wrapper{position:relative;width:100%;height:100%;z-index:1;display:flex;transition-property:transform;transition-timing-function:var(--swiper-wrapper-transition-timing-function, initial);box-sizing:content-box}.swiper-android .swiper-slide,.swiper-ios .swiper-slide,.swiper-wrapper{transform:translateZ(0)}.swiper-horizontal{touch-action:pan-y}.swiper-vertical{touch-action:pan-x}.swiper-slide{flex-shrink:0;width:100%;height:100%;position:relative;transition-property:transform;display:block}.swiper-slide-invisible-blank{visibility:hidden}.swiper-autoheight,.swiper-autoheight .swiper-slide{height:auto}.swiper-autoheight .swiper-wrapper{align-items:flex-start;transition-property:transform,height}.swiper-backface-hidden .swiper-slide{transform:translateZ(0);backface-visibility:hidden}.swiper-3d.swiper-css-mode .swiper-wrapper{perspective:1200px}.swiper-3d .swiper-wrapper{transform-style:preserve-3d}.swiper-3d{perspective:1200px}.swiper-3d .swiper-slide,.swiper-3d .swiper-cube-shadow{transform-style:preserve-3d}.swiper-css-mode>.swiper-wrapper{overflow:auto;scrollbar-width:none;-ms-overflow-style:none}.swiper-css-mode>.swiper-wrapper::-webkit-scrollbar{display:none}.swiper-css-mode>.swiper-wrapper>.swiper-slide{scroll-snap-align:start start}.swiper-css-mode.swiper-horizontal>.swiper-wrapper{scroll-snap-type:x mandatory}.swiper-css-mode.swiper-vertical>.swiper-wrapper{scroll-snap-type:y mandatory}.swiper-css-mode.swiper-free-mode>.swiper-wrapper{scroll-snap-type:none}.swiper-css-mode.swiper-free-mode>.swiper-wrapper>.swiper-slide{scroll-snap-align:none}.swiper-css-mode.swiper-centered>.swiper-wrapper:before{content:"";flex-shrink:0;order:9999}.swiper-css-mode.swiper-centered>.swiper-wrapper>.swiper-slide{scroll-snap-align:center center;scroll-snap-stop:always}.swiper-css-mode.swiper-centered.swiper-horizontal>.swiper-wrapper>.swiper-slide:first-child{margin-inline-start:var(--swiper-centered-offset-before)}.swiper-css-mode.swiper-centered.swiper-horizontal>.swiper-wrapper:before{height:100%;min-height:1px;width:var(--swiper-centered-offset-after)}.swiper-css-mode.swiper-centered.swiper-vertical>.swiper-wrapper>.swiper-slide:first-child{margin-block-start:var(--swiper-centered-offset-before)}.swiper-css-mode.swiper-centered.swiper-vertical>.swiper-wrapper:before{width:100%;min-width:1px;height:var(--swiper-centered-offset-after)}.swiper-3d .swiper-slide-shadow,.swiper-3d .swiper-slide-shadow-left,.swiper-3d .swiper-slide-shadow-right,.swiper-3d .swiper-slide-shadow-top,.swiper-3d .swiper-slide-shadow-bottom{position:absolute;left:0;top:0;width:100%;height:100%;pointer-events:none;z-index:10}.swiper-3d .swiper-slide-shadow{background:#00000026}.swiper-3d .swiper-slide-shadow-left{background-image:linear-gradient(to left,#00000080,#0000)}.swiper-3d .swiper-slide-shadow-right{background-image:linear-gradient(to right,#00000080,#0000)}.swiper-3d .swiper-slide-shadow-top{background-image:linear-gradient(to top,#00000080,#0000)}.swiper-3d .swiper-slide-shadow-bottom{background-image:linear-gradient(to bottom,#00000080,#0000)}.swiper-lazy-preloader{width:42px;height:42px;position:absolute;left:50%;top:50%;margin-left:-21px;margin-top:-21px;z-index:10;transform-origin:50%;box-sizing:border-box;border:4px solid var(--swiper-preloader-color, var(--swiper-theme-color));border-radius:50%;border-top-color:transparent}:is(.swiper:not(.swiper-watch-progress),.swiper-watch-progress .swiper-slide-visible) .swiper-lazy-preloader{animation:swiper-preloader-spin 1s infinite linear}.swiper-lazy-preloader-white{--swiper-preloader-color: #fff}.swiper-lazy-preloader-black{--swiper-preloader-color: #000}@keyframes swiper-preloader-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}:root{--font-main: "Inter", sans-serif}:root{--bg-primary: #f0f2f5;--bg-secondary: #ffffff;--bg-lightest: #f9f9f9;--text-primary: #1c1e21;--text-secondary: #4a4f56;--accent-secondary: #dc2626;--accent-secondary-hover: #b91c1c;--border-color: #dddfe2;--card-shadow: 0 6px 24px rgba(0, 0, 0, .1);--text-on-accent: #ffffff;--accent-green: #22c55e;--accent-red: #ef4444;--accent-yellow: #f59e0b}[data-theme=purple]{--accent-primary: #800080;--accent-primary-hover: #6a006a;--tag-bg: #f2e6f2;--tag-text: #800080}[data-theme=red]{--accent-primary: #e50914;--accent-primary-hover: #b20710;--tag-bg: #fde8e8;--tag-text: #e50914}[data-theme=orange]{--accent-primary: #ea580c;--accent-primary-hover: #c2410c;--tag-bg: #ffedd5;--tag-text: #c2410c}@media(prefers-color-scheme:dark){:root{--bg-primary: #121212;--bg-secondary: #1e1e1e;--bg-lightest: #2a2a2a;--text-primary: #ffffff;--text-secondary: #a9a9b3;--accent-primary: #673ab7;--accent-secondary: #ef4444;--accent-secondary-hover: #f87171;--border-color: #333;--card-shadow: 0 6px 24px rgba(103, 58, 183, .15);--tag-bg: #3a2e4a;--tag-text: #e6d8ff;--text-on-accent: #ffffff}}body.loading .header,body.loading .main-nav{z-index:0}*,*:before,*:after{box-sizing:border-box}body.loading{overflow:hidden}body{margin:0;font-family:var(--font-main);background-color:var(--bg-primary);color:var(--text-primary);transition:background-color .3s,color .3s;-webkit-user-select:none;user-select:none;font-size:1.1em}@media(pointer:fine){*{scrollbar-width:none;-ms-overflow-style:none}*::-webkit-scrollbar{width:0;height:0;display:none}}.app-container{display:flex;flex-direction:column;height:100vh}.settings-card .setting-item{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.settings-card .setting-item:last-child{margin-bottom:0}.settings-card .setting-item span{font-weight:500}.settings-card .setting-item>*{background-color:var(--bg-lightest);border:1px solid var(--border-color);border-radius:8px;padding:8px}.update-check-btn{background-color:var(--accent-primary);color:#fff;border:none;padding:10px 20px;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:background-color .2s;width:100%;margin-top:16px}.update-check-btn:hover{background-color:var(--accent-primary-hover)}.progress-bar-container{height:8px;background-color:var(--border-color);border-radius:4px;overflow:hidden;display:flex;margin-bottom:12px}.progress-wrapper{position:relative}.progress-bar-container.empty{background-color:var(--border-color)}.progress-bar-segment{height:100%}.progress-bar-segment.correct{background-color:var(--accent-green)}.progress-bar-segment.incorrect{background-color:var(--accent-red)}.progress-bar-segment.missing{background-color:var(--accent-yellow)}.confetti-container{position:absolute;width:100%;height:100%;top:0;left:0;pointer-events:none;overflow:visible}.confetti-container:before{content:"";position:absolute;width:8px;height:8px;background:var(--accent-green);border-radius:50%;animation:confetti-pop .8s ease-out 1.5s forwards;opacity:0}.swiper{width:100%;height:100%;overflow:hidden}.swiper-slide{height:100%}.mySwiper .swiper-slide{background:var(--bg-primary)}.quiz-swiper .swiper-slide{background:var(--bg-secondary)}.font-size-selector{display:flex;gap:8px}.font-size-btn{background-color:var(--bg-primary);border:1px solid var(--border-color);color:var(--text-secondary);border-radius:8px;padding:8px 12px;font-weight:600;cursor:pointer;transition:all .2s ease-in-out}.font-size-btn.active{background-color:var(--accent-primary);color:#fff;border-color:var(--accent-primary)}.update-toast{position:fixed;bottom:20px;left:50%;transform:translate(-50%);background-color:var(--accent-green);color:#fff;padding:12px 24px;border-radius:8px;box-shadow:0 4px 20px #0003;z-index:1000;animation:fadeInOut 4s ease-in-out;font-weight:600}.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#0009;display:flex;align-items:center;justify-content:center;z-index:2000;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.modal-content{background-color:var(--bg-secondary);padding:32px;border-radius:16px;box-shadow:0 10px 30px #0003;text-align:center;width:90%;max-width:320px}.modal-content p{margin:16px 0 24px;font-size:1.1rem;font-weight:500}.modal-close-btn{background-color:var(--accent-primary);color:#fff;border:none;padding:10px 20px;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:background-color .2s;width:100%}.modal-close-btn:hover{background-color:var(--accent-primary-hover)}.spinner{border:4px solid rgba(255,255,255,.2);border-left-color:var(--accent-primary);border-radius:50%;width:60px;height:60px;animation:spin 1s linear infinite;margin:0 auto}.checkmark{font-size:3rem;color:var(--accent-green)}.btn{width:100%;padding:12px;border-radius:8px;border:none;font-size:1rem;font-weight:600;cursor:pointer;transition:background-color .2s;display:flex;align-items:center;justify-content:center;gap:8px}.btn-primary{background-color:var(--text-primary);color:var(--bg-primary);margin-bottom:16px}.theme-dark .btn-primary{background-color:#fff;color:#121212}.theme-light .btn-primary{background-color:#1c1e21;color:#fff}.divider{margin:16px 0;color:var(--text-secondary);font-size:.875rem;position:relative;text-align:center}.divider:before,.divider:after{content:"";position:absolute;top:50%;width:40%;height:1px;background-color:var(--border-color)}.divider:before{left:0}.divider:after{right:0}.btn-social{background-color:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border-color);margin-bottom:12px}.btn-social:last-child{margin-bottom:0}.btn-social img{width:16px;height:16px}.spinner-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#0009;display:flex;align-items:center;justify-content:center;z-index:3000;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.quiz-modal-overlay{visibility:hidden;opacity:0;position:fixed;top:0;left:0;width:100%;height:100%;background:#00000080;z-index:2000;transition:visibility 0s .3s,opacity .3s ease}.quiz-modal-overlay.open{visibility:visible;opacity:1;transition:opacity .3s ease}.quiz-modal-content{position:absolute;bottom:0;left:0;width:100%;height:calc(100% - 12px);background:var(--bg-secondary);border-top-left-radius:18px;border-top-right-radius:18px;box-shadow:0 -10px 40px #0003;display:flex;flex-direction:column;transform:translateY(100%);will-change:transform}.quiz-modal-overlay.open .quiz-modal-content{transform:translateY(0);transition:transform .4s cubic-bezier(.32,.72,0,1)}@media(min-width:768px){.quiz-modal-content{top:auto;bottom:0;left:50%;width:min(calc(100vw - 48px),960px);height:min(calc(100vh - 12px),840px);max-height:calc(100vh - 12px);border-radius:22px 22px 0 0;transform:translate(-50%,100%);box-shadow:0 24px 70px #00000047;overflow:hidden}.quiz-modal-overlay.open .quiz-modal-content{transform:translate(-50%)}}@media(min-width:768px)and (max-width:1199px){.quiz-modal-content{width:min(calc(100vw - 140px),680px);height:calc(100vh - 12px);max-height:calc(100vh - 12px)}}.quiz-modal-header{display:flex;align-items:center;padding:12px 92px 5px 16px;border-bottom:1px solid var(--border-color);flex-shrink:0;position:relative}.header-tabs-container{width:100%;overflow:hidden}.quiz-modal-header .main-nav{border-bottom:none;background:transparent;justify-content:flex-start;overflow-x:auto;-ms-overflow-style:none;scrollbar-width:none;width:100%;padding-right:0}.quiz-modal-header .main-nav .main-nav-inner{justify-content:flex-start!important;width:max-content}.quiz-modal-header .main-nav::-webkit-scrollbar{display:none}.quiz-modal-header .main-nav-btn{padding:12px 14px;font-size:18px;gap:8px}.close-quiz-btn{position:absolute;right:16px;top:50%;transform:translateY(-50%);background-color:var(--bg-lightest, #e4e6eb);color:var(--text-primary);border-radius:50%;width:30px;height:30px;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;cursor:pointer;border:none;z-index:20;box-shadow:0 1px 4px #0000001a}.settings-quiz-btn{position:absolute;right:56px;top:50%;transform:translateY(-50%);background-color:var(--bg-lightest, #e4e6eb);color:var(--text-primary);border-radius:50%;width:30px;height:30px;display:flex;align-items:center;justify-content:center;cursor:pointer;border:none;z-index:20;box-shadow:0 1px 4px #0000001a;padding:5px}.settings-quiz-btn svg{width:17px;height:17px}.settings-quiz-btn:hover{filter:brightness(.9)}.settings-quiz-btn.spin svg{animation:spin-settings 1s ease-in-out}.settings-quiz-btn.hint-attention{animation:settings-hint-pulse 1.2s ease-in-out}.settings-quiz-btn.hint-attention svg{animation:settings-hint-wiggle 1.2s ease-in-out}@keyframes settings-hint-pulse{0%,to{box-shadow:0 1px 4px #0000001a;transform:translateY(-50%) scale(1)}35%{box-shadow:0 0 0 6px color-mix(in srgb,var(--accent-primary) 20%,transparent),0 4px 16px color-mix(in srgb,var(--accent-primary) 34%,transparent);transform:translateY(-50%) scale(1.08)}70%{box-shadow:0 0 color-mix(in srgb,var(--accent-primary) 0%,transparent),0 4px 12px color-mix(in srgb,var(--accent-primary) 18%,transparent);transform:translateY(-50%) scale(1.02)}}@keyframes settings-hint-wiggle{0%,to{transform:rotate(0)}20%{transform:rotate(-18deg)}40%{transform:rotate(18deg)}60%{transform:rotate(-12deg)}80%{transform:rotate(12deg)}}.close-quiz-btn:hover{filter:brightness(.9)}.app-hint-toast,.quiz-audio-hint-toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%) translateY(10px);background:color-mix(in srgb,var(--accent-primary) 88%,black 12%);color:#fff;padding:10px 16px;border-radius:999px;font-size:14px;font-weight:600;box-shadow:0 10px 24px color-mix(in srgb,var(--accent-primary) 30%,transparent);opacity:0;pointer-events:none;transition:opacity .22s ease,transform .22s ease;z-index:100100;width:max-content;max-width:min(calc(100vw - 24px),540px);white-space:nowrap}.app-hint-toast.show,.quiz-audio-hint-toast.show{opacity:1;transform:translate(-50%) translateY(0)}.quiz-swiper-container{flex-grow:1;overflow:hidden;position:relative}.confirm-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#0000004d;z-index:3000;display:flex;justify-content:center;align-items:center;opacity:0;visibility:hidden;transition:opacity .3s ease,visibility 0s .3s}.confirm-overlay.show{opacity:1;visibility:visible;transition:opacity .3s ease;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}.confirm-box{background-color:var(--bg-secondary);width:90%;max-width:320px;border-radius:16px;padding:24px;text-align:center;box-shadow:0 10px 30px #0003}.confirm-title{font-weight:600;font-size:1.125rem;padding:0 0 12px;color:var(--text-primary)}.confirm-message{font-size:.95rem;padding:0 0 24px;color:var(--text-secondary);border-bottom:none}.confirm-actions{display:flex;gap:12px;justify-content:stretch}.confirm-btn{flex:1;background-color:var(--bg-lightest);border:none;font-size:1rem;cursor:pointer;border-radius:8px;color:var(--text-primary);font-weight:600;padding:12px;transition:filter .2s}.confirm-btn.danger{background-color:var(--accent-red, #ff3b30);color:#fff}.confirm-btn:active{filter:brightness(.9)}.settings-overlay-box{background-color:var(--bg-secondary);width:90%;max-width:360px;border-radius:20px;overflow:hidden;display:flex;flex-direction:column;box-shadow:0 20px 60px #0000004d;border:1px solid var(--border-color);padding:0;position:relative;transform:scale(.95) translateY(10px);opacity:0;transition:transform .3s cubic-bezier(.19,1,.22,1),opacity .3s ease;will-change:transform,opacity;backface-visibility:hidden}.settings-overlay{position:fixed;inset:0;background-color:#0000004d;z-index:11000;display:flex;justify-content:center;align-items:center;opacity:0;visibility:hidden;pointer-events:none;backdrop-filter:blur(0);-webkit-backdrop-filter:blur(0);transition:opacity .25s ease,visibility 0s .25s,backdrop-filter .25s ease,-webkit-backdrop-filter .25s ease}.settings-overlay.show{opacity:1;visibility:visible;pointer-events:auto;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);transition:opacity .25s ease,backdrop-filter .25s ease,-webkit-backdrop-filter .25s ease}.settings-overlay.show .settings-overlay-box{transform:scale(1) translateY(0);opacity:1}.quiz-settings-header{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;background:linear-gradient(135deg,var(--bg-secondary) 0%,var(--bg-primary) 100%);border-bottom:1px solid var(--border-color)}.quiz-settings-header h2{margin:0;font-size:1.1rem;color:var(--text-primary);font-weight:700}.quiz-settings-header .close-btn{background:#0000000d;border:none;font-size:1.25rem;color:var(--text-secondary);cursor:pointer;width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:all .2s ease}.quiz-settings-header .close-btn:hover{background-color:#0000001a;color:var(--text-primary);transform:rotate(90deg)}.quiz-settings-body{padding:0;overflow-y:auto;max-height:60vh}.quiz-settings-body .settings-section{padding:20px;border-bottom:none}.quiz-settings-body .settings-section h3{border-bottom:2px solid var(--border-color)}@keyframes popIn{0%{transform:scale(.9);opacity:0}to{transform:scale(1);opacity:1}}.settings-done-btn{width:100%;background-color:var(--accent-primary);color:#fff;border:none;font-size:1rem;font-weight:600;padding:14px;border-radius:12px;margin-top:24px;cursor:pointer;box-shadow:0 4px 12px rgba(var(--accent-primary-rgb),.3);transition:transform .1s,filter .2s}.settings-done-btn:active{transform:scale(.98);filter:brightness(.9)}.loader{width:48px;height:48px;display:inline-block;position:relative}.loader:after,.loader:before{content:"";box-sizing:border-box;width:48px;height:48px;border-radius:50%;background:var(--accent-primary);position:absolute;left:0;top:0;animation:animloader 2s linear infinite}.loader:after{animation-delay:-1s}@keyframes progressBarFill{0%{width:0%}to{width:var(--target-width)}}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.1)}to{transform:scale(1)}}.progress-bar-container.completing .progress-bar-segment.animating{--target-width: 0;animation-name:progressBarFill;animation-duration:1.5s;animation-timing-function:cubic-bezier(.33,1,.68,1);animation-fill-mode:forwards}.progress-bar-container.completing .progress-bar-segment.correct.animating{--target-width: var(--correct-width);animation-duration:1s;animation-delay:0s}.progress-bar-container.completing .progress-bar-segment.incorrect.animating{--target-width: var(--incorrect-width);animation-duration:.4s;animation-delay:1s}.progress-bar-container.completing .progress-bar-segment.missing.animating{--target-width: var(--missing-width);animation-duration:.3s;animation-delay:1.4s}.progress-wrapper.completing{animation:pulse .5s ease-in-out 1s forwards}@keyframes confetti-pop{0%{transform:scale(0) translate(0);opacity:1}to{transform:scale(1.5) translate(var(--x),var(--y));opacity:0}}.confetti-container{position:absolute;width:100%;height:100%;top:0;left:0;pointer-events:none}.confetti-container:before{content:"";position:absolute;width:6px;height:6px;background-color:transparent;border-radius:50%;opacity:0;animation:confetti-pop .6s ease-out 1s forwards}.confetti-container[data-direction=top]:before{top:-4px;left:50%;--x: 0;--y: -80px;box-shadow:30px 10px #16a34a,-30px 5px #4ade80,50px 15px #15803d,-50px 20px #86efac}.confetti-container[data-direction=bottom]:before{bottom:-4px;left:50%;--x: 0;--y: 80px;box-shadow:-30px -10px #15803d,30px -5px #86efac,-50px -15px #16a34a,50px -20px #4ade80}.confetti-container[data-direction=left]:before{top:50%;left:-4px;--x: -80px;--y: 0;box-shadow:10px 25px #16a34a,5px -30px #4ade80,-15px 15px #15803d,-20px -20px #86efac}.confetti-container[data-direction=right]:before{top:50%;right:-4px;--x: 80px;--y: 0;box-shadow:-10px -25px #15803d,-5px 30px #86efac,15px -15px #16a34a,20px 20px #4ade80}@keyframes fadeInOut{0%{opacity:0;transform:translate(-50%,20px)}10%{opacity:1;transform:translate(-50%)}90%{opacity:1;transform:translate(-50%)}to{opacity:0;transform:translate(-50%,20px)}}@keyframes slide-in{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}@keyframes slide-in-from-left{0%{transform:translate(-100%);opacity:0}to{transform:translate(0);opacity:1}}.login-form.enter-right{transform:translate(0);opacity:1;animation:slide-in .4s ease-in-out}.login-form.enter-left{transform:translate(0);opacity:1;animation:slide-in-from-left .4s ease-in-out}.anim-unfold{transform:perspective(1200px) rotateX(-90deg);transform-origin:top center}.quiz-modal-overlay.open .anim-unfold{transform:perspective(1200px) rotateX(0)}@keyframes animloader{0%{transform:scale(0);opacity:1}to{transform:scale(1);opacity:0}}.page-placeholder{padding:40px;text-align:center;color:var(--text-secondary)}.page-placeholder h2{margin:0 0 12px;color:var(--text-primary);font-size:1.5rem}.page-placeholder p{margin:0 auto;max-width:520px;line-height:1.6}.exercise-logged-out-state{display:flex;flex-direction:column;align-items:center;gap:12px;padding-top:56px;padding-bottom:56px}.exercise-logged-out-state h2{margin:0}.exercise-logged-out-state p{margin:0 auto}.placeholder-action-btn{background-color:var(--accent-primary);color:#fff;border:none;padding:10px 20px;border-radius:8px;font-size:.95rem;font-weight:600;cursor:pointer;transition:background-color .2s ease}.placeholder-action-btn:hover{background-color:#311b92}.vocabulary-empty-state{grid-column:1 / -1;padding-top:56px;padding-bottom:56px}.content-container{flex-grow:1;overflow:hidden;position:relative;transform:translateZ(0)}.page-content{height:100%;overflow-y:auto;padding:24px;box-sizing:border-box;min-width:0}.warning-box{background-color:#ef4444;color:#fff;padding:16px;border-radius:8px;margin-bottom:24px;cursor:pointer;border:2px solid #b91c1c}.theme-light .warning-box{background-color:#fee2e2;color:#b91c1c;border-color:#fca5a5}.warning-box a{text-decoration:underline}.vocabulary-page{display:flex;flex-direction:column;gap:24px}.vocab-header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border-color);padding-bottom:16px;font-size:16px!important;flex-wrap:nowrap}.vocab-header h2{margin:0;font-size:22px!important;line-height:1.2}@media(min-width:1025px){.vocab-header h2{font-size:.82rem!important;font-weight:800;letter-spacing:.08em;text-transform:uppercase}}.vocab-header-actions{display:flex;align-items:center;gap:10px;flex-wrap:nowrap}.quiz-btn{background-color:var(--accent-primary);color:#fff;border:none;padding:10px 20px;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:background-color .2s ease;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent!important}.quiz-btn:hover,.quiz-btn:active{background-color:var(--accent-primary-hover)}.quiz-btn.is-disabled{opacity:.55;cursor:not-allowed}.quiz-btn.is-disabled:hover,.quiz-btn.is-disabled:active{background-color:var(--accent-primary)}.flashcards-btn{display:inline-flex;align-items:center;gap:8px;padding:10px 12px}.vocab-header .quiz-btn{font-size:16px!important;line-height:1.2}.flashcards-btn.is-disabled{opacity:.5}.vocab-controls-stack{display:grid;gap:0;margin-bottom:16px}.vocab-sort-controls,.vocab-low-count-panel{overflow:hidden;transition:max-height .36s cubic-bezier(.22,1,.36,1),opacity .26s ease,transform .36s cubic-bezier(.22,1,.36,1),margin .36s ease,padding .36s ease,border-color .26s ease,visibility 0s linear .36s;will-change:max-height,opacity,transform}.vocab-sort-controls{display:flex;gap:8px;padding-bottom:16px;border-bottom:1px solid var(--border-color);flex-wrap:nowrap;overflow:hidden}.vocab-low-count-panel{position:relative;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:16px;padding:15px 16px;border:1px solid color-mix(in srgb,var(--accent-primary) 28%,var(--border-color));border-radius:16px;background:linear-gradient(135deg,color-mix(in srgb,var(--accent-primary) 11%,var(--bg-secondary)),color-mix(in srgb,var(--accent-primary) 3%,var(--bg-secondary)));box-shadow:0 9px 24px color-mix(in srgb,var(--accent-primary) 9%,transparent)}.vocab-sort-controls.is-visible,.vocab-low-count-panel.is-visible{opacity:1;visibility:visible;transform:translateY(0) scale(1);pointer-events:auto;transition:max-height .36s cubic-bezier(.22,1,.36,1),opacity .26s ease,transform .36s cubic-bezier(.22,1,.36,1),margin .36s ease,padding .36s ease,border-color .26s ease,visibility 0s linear 0s}.vocab-sort-controls.is-hidden,.vocab-low-count-panel.is-hidden{max-height:0;opacity:0;visibility:hidden;transform:translateY(-10px) scale(.985);pointer-events:none;padding-top:0;padding-bottom:0;margin:0;border-color:transparent}.vocab-sort-controls.is-visible{max-height:96px}.vocab-low-count-panel.is-visible{max-height:150px}.vocab-low-count-copy{min-width:0}.vocab-low-count-badge{display:inline-flex;margin-bottom:5px;padding:4px 9px;border-radius:999px;background:color-mix(in srgb,var(--accent-primary) 14%,var(--bg-primary));color:var(--accent-primary);font-size:.76rem;font-weight:850;letter-spacing:.02em}.vocab-low-count-message{margin:0;color:var(--text-primary);font-size:.96rem;font-weight:650;line-height:1.38}.vocab-low-count-actions{display:flex;justify-content:center;flex:0 0 auto}.vocab-sort-controls button{background-color:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-secondary);border-radius:8px;padding:8px 12px;font-weight:600;font-size:14px;line-height:1.2;cursor:pointer;transition:all .2s ease-in-out;display:flex;align-items:center;gap:6px;white-space:nowrap;min-width:0;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent!important}.vocab-sort-controls button.is-active{background-color:var(--accent-primary);color:#fff;border-color:var(--accent-primary)}.sort-arrow{transition:transform .3s ease}.sort-arrow.is-desc{transform:rotate(180deg)}.vocab-grid-container{display:grid;grid-template-columns:1fr;gap:16px;position:relative}.vocab-inline-plus-btn{width:44px;height:auto;margin-left:auto;margin-right:auto;border-radius:8px;border:1px solid var(--accent-primary);background:var(--accent-primary)!important;color:#fff!important;font-size:30px;font-weight:700;line-height:.8;padding:8px 0;display:inline-flex;align-items:center;justify-content:center;cursor:pointer}.vocab-inline-plus-btn.vocab-inline-plus-btn--large{position:relative;width:54px;height:54px;overflow:hidden;border-radius:10px;font-size:34px;line-height:1;padding:0;box-shadow:0 9px 20px color-mix(in srgb,var(--accent-primary) 28%,transparent),0 0 color-mix(in srgb,var(--accent-primary) 35%,transparent);animation:vocab-plus-invite 2.4s ease-in-out infinite}.vocab-inline-plus-btn--large:after{content:"";position:absolute;inset:-35% auto -35% -55%;width:34%;background:linear-gradient(90deg,transparent,rgb(255 255 255 / 88%),transparent);transform:skew(-20deg) translate(-180%);animation:vocab-plus-shine 2.4s .55s ease-in-out infinite;pointer-events:none}@keyframes vocab-plus-invite{0%,to{transform:scale(1);box-shadow:0 9px 20px color-mix(in srgb,var(--accent-primary) 28%,transparent),0 0 color-mix(in srgb,var(--accent-primary) 32%,transparent)}45%{transform:scale(1.06);box-shadow:0 12px 24px color-mix(in srgb,var(--accent-primary) 34%,transparent),0 0 0 9px transparent}}@keyframes vocab-plus-shine{0%,28%{transform:skew(-20deg) translate(-180%);opacity:0}42%{opacity:1}62%,to{transform:skew(-20deg) translate(520%);opacity:0}}@media(max-width:400px){.vocab-header{flex-wrap:nowrap!important;align-items:center!important;gap:8px}.vocab-header h2{font-size:16px!important;white-space:nowrap;min-width:0}.vocab-header .quiz-btn,.vocab-sort-controls button{font-size:13px!important}.vocab-header .quiz-btn{padding:7px 10px;min-height:38px}.flashcards-btn{padding:8px 10px}.vocab-header-actions{width:auto!important;justify-content:flex-end!important;gap:6px;flex-wrap:nowrap!important}.vocab-inline-plus-btn{width:38px;font-size:26px;padding:7px 0;margin-right:6px}.vocab-sort-controls button{padding:6px 7px;gap:3px;font-size:12px!important}.vocab-sort-controls{flex-wrap:nowrap!important;gap:6px;overflow:hidden}}@media(max-width:355px){.vocab-header{flex-wrap:nowrap!important;align-items:center!important;gap:6px}.vocab-header h2{font-size:14px!important;white-space:nowrap}.vocab-header{padding-bottom:12px}.vocab-header .quiz-btn,.vocab-sort-controls button{font-size:12px!important}.vocab-header .quiz-btn{padding:6px 8px;min-height:34px}.flashcards-btn{padding:6px 8px}.vocab-header-actions{width:auto!important;justify-content:flex-end!important;gap:5px;flex-wrap:nowrap!important}.vocab-sort-controls{gap:6px;margin-bottom:12px;padding-bottom:12px;flex-wrap:nowrap!important;overflow:hidden}.vocab-inline-plus-btn{width:34px;font-size:24px;padding:6px 0;margin-right:4px}.vocab-sort-controls button{padding:5px 6px;gap:3px;font-size:11px!important}}@media(max-width:325px){.vocab-sort-controls{gap:4px;flex-wrap:nowrap!important;overflow:hidden}.vocab-sort-controls button{font-size:10px!important;padding:4px 5px;gap:2px}.vocab-inline-plus-btn{width:30px;font-size:20px;padding:4px 0;margin-right:3px}}@media(min-width:700px){.vocab-grid-container{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}}@media(min-width:1180px){.vocab-grid-container{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}}.vocab-item-card{background-color:var(--bg-secondary);border-radius:12px;box-shadow:var(--card-shadow);cursor:pointer;overflow:hidden;transition:background-color .3s ease-in-out,border-left-color .3s ease-in-out,box-shadow .3s ease-in-out,opacity .3s ease-in-out;-webkit-tap-highlight-color:transparent;border-left:5px solid transparent}@media(prefers-color-scheme:dark){.vocab-item-card{box-shadow:0 8px 24px #00000047}}.theme-dark .vocab-item-card{box-shadow:0 8px 24px #00000047}.vocab-grid-mounted .vocab-item-card{transition:background-color .3s ease-in-out,border-left-color .3s ease-in-out,box-shadow .3s ease-in-out,opacity .3s ease-in-out,transform 1s}.vocab-item-card.is-deleting{opacity:0;transform:scale(.9);transition:opacity .5s ease,transform .5s ease;pointer-events:none}.vocab-item-card.familiarity--new{border-left-color:#ef4444}.vocab-item-card.familiarity--learning{border-left-color:#f59e0b}.vocab-item-card.familiarity--known{border-left-color:#22c55e}.vocab-card-header{padding:16px;font-size:1.125rem;font-weight:600;display:flex;align-items:center;justify-content:space-between;gap:8px}.vocab-card-header-main{display:inline-flex;align-items:center;flex-wrap:wrap;gap:8px;min-width:0;flex:1 1 auto}.vocab-inline-audio-btn{margin-left:auto;flex-shrink:0;width:32px;height:32px;border:1.5px solid rgba(49,27,146,.2);background:#ffffffeb;box-shadow:0 1px 3px #0f172a14}.vocab-inline-audio-btn svg circle{fill:transparent}.vocab-inline-audio-btn:hover:not(:disabled){border-color:#311b9257;background:#fff}.vocab-inline-audio-btn.is-playing{background:#fff;border-color:#311b9257}.audio-btn.vocab-inline-audio-btn.is-loading{background:#fffffff0;border-color:color-mix(in srgb,var(--accent-primary) 38%,white);box-shadow:0 4px 10px #0f172a1f}.audio-btn.vocab-inline-audio-btn.is-loading:before{content:"";position:absolute;inset:0;border-radius:50%;background:radial-gradient(circle at center,color-mix(in srgb,var(--accent-primary) 14%,white),transparent 72%);animation:tooltip-audio-pulse 1.2s ease-in-out infinite}.audio-btn.vocab-inline-audio-btn.is-loading:after{content:"";position:absolute;top:0;left:-35%;width:58%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.98),color-mix(in srgb,var(--accent-primary) 14%,white),rgba(255,255,255,.98),transparent);transform:skew(-18deg) translate(0);animation:dre-shimmer 1.15s ease-in-out infinite;border-radius:50%}@media(prefers-color-scheme:dark){.audio-btn.vocab-inline-audio-btn.is-loading{background:#080808f5;border-color:#ffffff24;box-shadow:0 4px 14px #00000057}.audio-btn.vocab-inline-audio-btn.is-loading:before{background:radial-gradient(circle at center,rgba(255,255,255,.1),transparent 72%)}.audio-btn.vocab-inline-audio-btn.is-loading:after{background:linear-gradient(90deg,transparent,rgba(255,255,255,.94),rgba(255,255,255,.72),rgba(255,255,255,.94),transparent)}}.vocab-inline-audio-btn:disabled:not(.is-loading):not(.is-playing){opacity:.45}.new-tag{background-color:var(--accent-primary);color:#fff;font-size:.75rem;font-weight:700;padding:2px 6px;border-radius:4px;vertical-align:middle;animation:new-tag-pulse .9s ease-in-out 3,new-tag-exit .5s ease forwards;animation-delay:0s,5s}.vocab-inline-audio-btn--left{margin-left:0;margin-right:8px}.vocab-inline-wordlist-btn{margin-left:8px;color:var(--accent-primary)!important;border-color:var(--accent-primary)!important;background:color-mix(in srgb,var(--accent-primary) 6%,white)!important}.vocab-inline-wordlist-btn:hover:not(:disabled){background:color-mix(in srgb,var(--accent-primary) 12%,white)!important;border-color:var(--accent-primary)!important}.vocab-inline-wordlist-btn.state-added{background:color-mix(in srgb,var(--accent-primary) 12%,white)!important;border-color:var(--accent-primary)!important;color:var(--accent-primary)!important}.vocab-inline-wordlist-btn.state-error{color:#b91c1c}.vocab-inline-wordlist-btn .wordlist-icon path,.vocab-inline-wordlist-btn .wordlist-icon circle{stroke:var(--accent-primary)!important}.vocab-inline-wordlist-btn.state-loading .loading-icon circle{stroke:var(--accent-primary)!important}body.light-mode .vocab-inline-wordlist-btn{color:var(--accent-primary)!important;border-color:var(--accent-primary)!important;background:color-mix(in srgb,var(--accent-primary) 6%,white)!important}@keyframes new-tag-pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.65;transform:scale(1.06)}}@keyframes new-tag-exit{0%{opacity:1;transform:translateY(0) scale(1)}to{opacity:0;transform:translateY(-6px) scale(.9);visibility:hidden}}.word-type{font-style:italic;font-weight:400;color:var(--text-secondary);font-size:.875rem}.vocab-card-body{display:grid;grid-template-rows:0fr;transition:grid-template-rows .5s cubic-bezier(.25,.8,.25,1)}.vocab-item-card.is-expanded .vocab-card-body{grid-template-rows:1fr}.vocab-card-content{overflow:hidden;padding:0 16px;opacity:0;transition:opacity .5s cubic-bezier(.25,.8,.25,1)}.vocab-item-card.is-expanded .vocab-card-content{padding-bottom:16px;opacity:1}.vocab-card-body p{margin:0 0 8px;font-size:.875rem;color:var(--text-secondary)}.vocab-card-body p:last-child{margin-bottom:0}.vocab-card-body strong{color:var(--text-primary)}.highlighted-word{color:var(--accent-primary);font-weight:700}@media(prefers-color-scheme:dark){.highlighted-word{color:#e6d8ff}}.complete-btn{background-color:var(--accent-primary);color:#fff;border:none;padding:10px 20px;border-radius:8px;font-size:.875rem;font-weight:600;cursor:pointer;transition:background-color .2s;width:100%;margin-top:16px}.complete-btn:hover{background-color:#311b92}.exercise-header{display:flex;flex-direction:column;gap:12px;margin-bottom:16px}.exercise-header-top{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:clamp(8px,2vw,12px);border-bottom:1px solid var(--border-color);padding-bottom:16px}.exercise-page-shell{min-width:0}.exercise-header-top h2{margin:0;font-size:1.375rem;min-width:0}.exercise-refresh-btn{display:flex;align-items:center;justify-content:center;justify-self:end;width:36px;height:36px;padding:0;border:1px solid var(--accent-primary);border-radius:8px;background:var(--accent-primary);color:#fff;cursor:pointer}.exercise-refresh-btn:disabled{cursor:wait;opacity:.7}.exercise-view-toggle-row{display:flex;flex-wrap:nowrap;align-items:center;justify-content:flex-start;gap:8px;width:100%;border-bottom:1px solid var(--border-color);padding-bottom:16px;min-width:0}.exercise-view-toggle-row .exercise-segment-btn{background-color:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-secondary);border-radius:8px;padding:8px 12px;font-weight:600;cursor:pointer;transition:all .2s ease-in-out;display:inline-flex;align-items:center;gap:6px;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent!important}.exercise-category-select{margin-left:auto;min-width:120px;flex:1 1 auto;max-width:360px;height:40px;border-radius:8px;border:1px solid var(--border-color);background-color:var(--bg-secondary);color:var(--text-primary);font-weight:600;padding:0 12px}.exercise-view-toggle-row .exercise-segment-btn.is-active{background-color:var(--accent-primary);color:#fff;border-color:var(--accent-primary)}@media(max-width:520px){.exercise-view-toggle-row .exercise-segment-btn{flex:0 0 auto}}@media(max-width:360px){.exercise-header{gap:6px}}@media(max-width:375px){.page-content{padding:16px}.vocabulary-page{gap:16px}.vocab-header{gap:12px;align-items:flex-start;flex-wrap:wrap}.vocab-header-actions{width:100%;justify-content:flex-start}.vocab-sort-controls{flex-wrap:wrap}}.login-container{padding:24px}.login-card{max-width:400px;margin:0 auto;padding:32px;overflow:hidden;background-color:var(--bg-secondary);border-radius:16px;box-shadow:var(--card-shadow);text-align:center}.login-card h2{margin-top:0;margin-bottom:24px;font-size:1.5rem}.login-header{display:flex;align-items:center;justify-content:center;position:relative;margin-bottom:11px}.login-header h2{margin:0}.btn-back{position:absolute;left:0;background:none;border:none;cursor:pointer;color:var(--text-secondary);padding:0}.input-group{margin-bottom:16px}.input-group input{width:100%;padding:12px;border-radius:8px;border:1px solid var(--border-color);background-color:var(--bg-primary);color:var(--text-primary);font-size:1rem;box-sizing:border-box;-webkit-tap-highlight-color:transparent}.input-group input:-webkit-autofill,.input-group input:-webkit-autofill:hover,.input-group input:-webkit-autofill:focus,.input-group input:-webkit-autofill:active{-webkit-box-shadow:0 0 0 30px var(--bg-primary) inset!important;-webkit-text-fill-color:var(--text-primary)!important}.email-display{font-weight:600;word-break:break-all}.login-form{transition:transform .5s ease-in-out,opacity .5s ease-in-out}.login-form>.divider,.login-form>.btn-social{display:none}.login-form.show-social-options>.divider{display:block}.login-form.show-social-options>.btn-social{display:flex}.btn-social.btn-apple{background:#000;border-color:#000;color:#fff}.btn-social.btn-apple:hover{background:#111;border-color:#111}.btn-social .apple-logo{flex:0 0 auto;height:18px;width:18px}.login-form.exit-left{transform:translate(-100%);opacity:0}.login-form.exit-right{transform:translate(100%);opacity:0}.error-message{background-color:#ef4444;color:#fff;padding:16px;border-radius:8px;margin-bottom:24px;animation:fade-in .5s ease-in-out}@keyframes fade-in{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.quiz-content{padding:24px}.quiz-content.quiz-content-article{padding:0}.quiz-article-scroll-indicator{position:sticky;top:0;left:0;width:100%;height:0;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .22s ease,visibility 0s linear .22s;z-index:12}.quiz-article-scroll-indicator.is-visible{opacity:1;visibility:visible;transition:opacity .22s ease}.quiz-article-scroll-indicator-track{width:100%;height:2px;background:color-mix(in srgb,var(--text-secondary) 24%,transparent)}.quiz-article-scroll-indicator-fill{width:100%;height:100%;transform-origin:left center;transform:scaleX(0);background:var(--accent-primary);will-change:transform}.btn-back-arrow{background:none;border:none;cursor:pointer;color:var(--accent-primary);padding:0;margin-right:8px;display:inline-flex;align-items:center;justify-content:center}.btn-back-arrow:hover{opacity:.8}.forgot-password-btn{background:none;border:none;color:var(--accent-primary);font:inherit;padding:0;text-decoration:underline;text-underline-offset:2px}.forgot-password-btn:disabled{opacity:.75;text-decoration:none}.password-reset-feedback{margin-top:10px;margin-bottom:0;padding:10px 12px;border-radius:10px;border:1px solid color-mix(in srgb,var(--accent-primary) 35%,transparent);background:color-mix(in srgb,var(--accent-primary) 12%,var(--bg-secondary));color:var(--text-primary);font-size:.9rem;line-height:1.4}.password-form{padding-top:16px}.password-checklist{display:grid;gap:6px;margin-top:-2px;margin-bottom:16px;padding:10px 12px;border-radius:12px;background:var(--bg-primary);border:1px solid var(--border-color)}.password-checklist div{position:relative;padding-left:18px;font-size:.74rem;line-height:1.35;opacity:.72;color:var(--text-secondary)}.password-checklist div:before{content:"";position:absolute;top:50%;left:0;width:10px;height:10px;margin-top:-5px;border-radius:999px;background:#94a3b873}.password-checklist div.is-valid{opacity:1;color:#15803d}.password-checklist div.is-valid:before{background:#38d46a;box-shadow:0 0 0 3px #38d46a2e}.verification-code-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:16px}.verification-code-box{display:flex;align-items:center;justify-content:center;width:100%;height:52px;border-radius:12px;border:1px solid var(--border-color);background-color:var(--bg-primary);color:var(--text-primary);text-align:center;font-size:1.5rem;font-weight:700;box-sizing:border-box;-webkit-tap-highlight-color:transparent;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease,background-color .18s ease}.verification-code-box.is-active{border-color:var(--accent-primary);box-shadow:0 0 0 3px #6366f126}.verification-code-box.is-filled{border-color:var(--accent-primary)}.verification-code-box.is-new{animation:verificationDigitPop .22s ease-out}.verification-code-box.is-verifying{animation:verificationDigitPulse .9s ease-in-out infinite}@keyframes verificationDigitPop{0%{transform:scale(.84)}60%{transform:scale(1.08)}to{transform:scale(1)}}@keyframes verificationDigitPulse{0%,to{transform:translateY(0);box-shadow:0 0 #6366f129}50%{transform:translateY(-1px);box-shadow:0 0 0 4px #6366f11a}}.verification-panel{position:relative;min-height:238px}.verification-keypad{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;transition:opacity .22s ease,transform .22s ease}.verification-keypad-btn{height:52px;border:1px solid var(--border-color);border-radius:12px;background-color:var(--bg-primary);color:var(--text-primary);font-size:1.1rem;font-weight:700;cursor:pointer;transition:border-color .2s ease,transform .1s ease,background-color .2s ease}.verification-keypad-btn:hover{border-color:var(--accent-primary)}.verification-keypad-btn:active{transform:scale(.98)}.verification-keypad-btn:disabled{opacity:.6;cursor:default}.verification-keypad-btn-delete{font-size:.9rem}.verification-keypad-spacer{height:52px}.verification-status{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;gap:8px;color:var(--text-secondary);font-size:.95rem;opacity:0;transform:translateY(8px);pointer-events:none;transition:opacity .22s ease,transform .22s ease}.verification-panel.is-verifying .verification-keypad{opacity:0;transform:translateY(-6px);pointer-events:none}.verification-panel.is-verifying .verification-status{opacity:1;transform:translateY(0)}.vocab-actions-row{display:flex;justify-content:flex-end;gap:8px;margin-top:16px;padding-top:16px;border-top:1px solid var(--border-color)}.vocab-action-btn{background:none;border:1px solid var(--border-color);border-radius:4px;padding:6px;cursor:pointer;color:var(--text-secondary);display:flex;align-items:center;justify-content:center;transition:all .2s ease}.vocab-action-btn:hover{background-color:var(--bg-primary);color:var(--accent-primary);border-color:var(--accent-primary)}.vocab-action-btn svg{width:16px;height:16px}.btn-thumbs-down:hover{color:#ef4444;border-color:#ef4444}.btn-thumbs-up:hover{color:#22c55e;border-color:#22c55e}.btn-delete:hover{color:#ef4444;border-color:#ef4444}.btn-audio:hover{color:var(--accent-primary);border-color:var(--accent-primary);background-color:var(--bg-primary)}@keyframes spin{to{transform:rotate(360deg)}}.egh-spinner{animation:spin 1s linear infinite}.fade-enter{opacity:0;transform:scale(.9)}.fade-enter-active{opacity:1;transform:scale(1);transition:opacity .3s ease,transform .3s ease}.fade-exit{opacity:1;transform:scale(1)}.fade-exit-active{opacity:0;transform:scale(.9);transition:opacity .3s ease,transform .3s ease}.egh-modal-overlay{position:fixed;inset:0;width:100vw;height:100vh;background-color:#080c1694;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);display:flex;align-items:center;justify-content:center;z-index:99999;opacity:0;pointer-events:none;transition:opacity .3s ease;padding:16px;box-sizing:border-box}.egh-modal-overlay.is-open{opacity:1;pointer-events:auto}.egh-modal-content{background-color:var(--bg-primary);border-radius:16px;width:min(100%,560px);max-width:560px;box-shadow:0 24px 70px #00000057;position:relative;max-height:min(92vh,900px);overflow-y:auto;border:1px solid var(--border-color);transform:translateY(12px) scale(.98);opacity:0;transition:transform .26s ease,opacity .26s ease}.egh-modal-overlay.is-open .egh-modal-content{transform:translateY(0) scale(1);opacity:1}.egh-modal-header{display:flex;justify-content:space-between;gap:18px;padding:22px 24px;border-bottom:1px solid var(--border-color);background:var(--bg-secondary)}.egh-modal-eyebrow{margin:0 0 5px;color:var(--accent-primary);font-size:.75rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase}.egh-close{width:38px;height:38px;flex:0 0 38px;border:1px solid var(--border-color);border-radius:50%;background:var(--bg-secondary);cursor:pointer;color:var(--text-secondary);font-size:1.35rem;line-height:1;display:inline-flex;align-items:center;justify-content:center}.egh-close:hover{color:var(--text-primary)}.egh-modal-content h3{margin:0;color:var(--text-primary);font-size:1.35rem;line-height:1.15}.egh-modal-body{padding:22px 24px 24px}.egh-modal-warning-text{margin:0 0 14px;color:#b91c1c;font-weight:600;line-height:1.45}.form-group{margin-bottom:16px}.form-group label{display:block;margin-bottom:8px;font-weight:600;color:var(--text-primary);font-size:.9rem}.form-group input,.form-group textarea{width:100%;padding:10px;border:1px solid var(--border-color);border-radius:6px;font-size:1rem;font-family:inherit;background-color:var(--bg-primary);color:var(--text-primary);box-sizing:border-box}.form-group textarea{resize:vertical;min-height:80px}.form-validation-error{margin:6px 0 0;color:#dc2626;font-size:.85rem;font-weight:600;line-height:1.35}.vocab-add-word-first-open-hint{margin-bottom:12px;padding:10px 12px;border-radius:12px;border:1px solid color-mix(in srgb,var(--accent-primary) 26%,transparent);background:color-mix(in srgb,var(--accent-primary) 10%,var(--bg-secondary));color:var(--text-primary);box-shadow:0 8px 18px #0000000f}.vocab-add-word-first-open-hint p{margin:0;line-height:1.35;font-size:.92rem}.vocab-add-word-hint-inline{display:inline-flex;align-items:center;gap:8px;flex-wrap:nowrap;max-width:100%}.vocab-add-word-hint-label{display:inline-block;margin-left:6px;font-weight:700}.vocab-add-word-hint-button-wrap{display:inline-flex;flex:0 0 auto}.form-input-error{border-color:#dc2626!important;box-shadow:0 0 0 2px #dc26261f}.ai-word-input-wrap{position:relative}.ai-word-input{padding-right:64px!important}.ai-fill-btn{position:absolute;right:6px;top:50%;transform:translateY(-50%);height:32px;min-width:46px;border:1px solid #b45309;border-radius:8px;background:linear-gradient(135deg,#a16207,#facc15);color:#1f2937;font-size:.75rem;font-weight:700;padding:0 10px;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 6px 14px #eab3084d;transition:transform .16s ease,box-shadow .16s ease,filter .16s ease;overflow:hidden;isolation:isolate}.ai-fill-btn:after{content:"";position:absolute;top:-140%;left:-50%;width:34%;height:280%;background:linear-gradient(90deg,#fff0,#ffffff85,#fff0);transform:skew(-22deg) translate(-220%);animation:premium-gold-sheen 2.8s ease-in-out infinite;pointer-events:none;z-index:2}.ai-fill-btn:not(:disabled):not(.ai-fill-btn--inline):hover{transform:translateY(calc(-50% - 1px));filter:brightness(1.02);box-shadow:0 8px 18px #eab30857}.ai-fill-btn:disabled{opacity:.8;cursor:wait}.ai-fill-btn.is-guided{animation:vocab-ai-fill-nudge 1.9s ease-in-out infinite;box-shadow:0 0 #eab30885,0 8px 18px #eab30857}.ai-fill-btn--inline{position:static;transform:none;min-width:46px;height:34px;padding:0 10px;gap:0}.ai-fill-btn--inline span{white-space:nowrap}.ai-fill-btn--inline.is-guided{animation:vocab-ai-fill-inline-nudge 1.9s ease-in-out infinite}.form-ai-loading{position:relative;overflow:hidden;background-image:linear-gradient(90deg,color-mix(in srgb,var(--bg-primary) 90%,var(--border-color) 10%),color-mix(in srgb,var(--bg-primary) 62%,var(--border-color) 38%) 25%,color-mix(in srgb,var(--bg-primary) 90%,var(--border-color) 10%) 50% 100%);background-size:200% 100%;animation:ai-shimmer 1.05s linear infinite;color:transparent}.form-ai-reveal{animation:ai-field-reveal .26s ease-out}@keyframes vocab-ai-fill-nudge{0%,to{transform:translateY(-50%) scale(1);box-shadow:0 0 #eab30875,0 8px 18px #eab30857}35%{transform:translateY(calc(-50% - 2px)) scale(1.06);box-shadow:0 0 0 10px #eab30800,0 12px 24px #eab30861}70%{transform:translateY(-50%) scale(1.02);box-shadow:0 0 0 4px #eab3081a,0 10px 20px #eab3085c}}@keyframes vocab-ai-fill-inline-nudge{0%,to{transform:translateY(0) scale(1);box-shadow:0 0 #eab3086b,0 6px 14px #eab30847}35%{transform:translateY(-1px) scale(1.04);box-shadow:0 0 0 8px #eab30800,0 10px 18px #eab30852}70%{transform:translateY(0) scale(1.01);box-shadow:0 0 0 3px #eab30814,0 7px 15px #eab3084d}}@keyframes ai-shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}@keyframes ai-field-reveal{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.form-actions{display:flex;justify-content:flex-end;gap:12px;margin-top:24px}.form-actions--left{justify-content:flex-start;margin-top:4px}.btn-cancel{background-color:var(--bg-primary);color:var(--text-primary);border:1px solid var(--border-color);padding:8px 16px;border-radius:6px;cursor:pointer;font-weight:600}.btn-save{background-color:var(--accent-primary);color:#fff;border:none;padding:8px 16px;border-radius:6px;cursor:pointer;font-weight:600}.btn-cancel:hover,.btn-save:hover,.btn-delete-confirm:hover{filter:brightness(.98)}.btn-delete-confirm{background-color:#dc2626;color:#fff;border:none;padding:8px 16px;border-radius:6px;cursor:pointer;font-weight:600}.shimmer-loader{display:inline-block;width:96px;max-width:100%;height:.85em;margin-left:5px;border-radius:999px;vertical-align:middle;background:linear-gradient(90deg,color-mix(in srgb,var(--bg-lightest) 88%,var(--border-color) 12%),color-mix(in srgb,var(--bg-lightest) 55%,var(--border-color) 45%) 24%,color-mix(in srgb,var(--bg-lightest) 88%,var(--border-color) 12%) 48% 100%);background-size:200% 100%;animation:tooltip-translation-shimmer 1.1s linear infinite}.vocab-translation-text{display:inline-block;margin-left:5px;animation:vocab-translation-fade-in .28s ease-out}@keyframes vocab-translation-fade-in{0%{opacity:0;transform:translateY(2px)}to{opacity:1;transform:translateY(0)}}.app-version-dashboard{font-size:.75rem;color:var(--text-secondary);text-align:center;margin-top:16px}.desktop-layout{display:flex;width:100%;height:100%}.desktop-column{flex:1;display:flex;flex-direction:column;border-right:1px solid var(--border-color);min-width:0;background-color:var(--bg-primary)}.desktop-column:last-child{border-right:none}.desktop-column h2{padding:18px 20px 10px;margin:0;font-size:.82rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;text-align:left;color:var(--text-secondary);background:transparent;border-bottom:none;z-index:10}.desktop-column .page-content{flex:1;overflow-y:auto}.desktop-account-heading{margin:0;font-size:1rem;line-height:1.25;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--text-primary)}.desktop-account-heading-row{display:flex;align-items:center;min-height:1.65rem;padding-bottom:16px;margin-bottom:16px;border-bottom:1px solid var(--border-color)}.premium-exercise-overlay{position:fixed;inset:0;z-index:100001;background:#0206178f;display:flex;align-items:center;justify-content:center;padding:20px;opacity:0}.premium-exercise-modal{width:min(440px,100%);border-radius:18px;background:var(--bg-secondary);border:1px solid rgba(234,179,8,.55);box-shadow:0 24px 60px #02061759;padding:18px;transform-origin:center;opacity:0;transform:translateY(12px) scale(.97)}.premium-exercise-overlay.is-open{animation:premium-overlay-fade-in .22s ease-out forwards}.premium-exercise-overlay.is-closing{animation:premium-overlay-fade-out .22s ease-in forwards}.premium-exercise-modal.is-open{animation:premium-modal-pop-in .3s cubic-bezier(.22,1,.36,1) forwards}.premium-exercise-modal.is-closing{animation:premium-modal-pop-out .22s ease-in forwards}.premium-exercise-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}.premium-exercise-header h3{margin:0;font-size:1.08rem}.premium-exercise-close{border:none;background:transparent;color:var(--text-secondary);font-size:1.6rem;line-height:1;cursor:pointer}.premium-exercise-modal p{margin:0 0 8px;color:var(--text-primary)}.premium-exercise-article-name{color:#a16207;font-style:italic;font-weight:700}.premium-exercise-actions{margin-top:14px;display:flex;justify-content:flex-end}.premium-exercise-btn{border:none;border-radius:999px;padding:10px 14px;font-weight:700;cursor:pointer;background:linear-gradient(135deg,#a16207,#eab308);color:#1f2937;position:relative;overflow:hidden;isolation:isolate}.premium-exercise-btn:after{content:"";position:absolute;top:-140%;left:-50%;width:34%;height:280%;background:linear-gradient(90deg,#fff0,#ffffff85,#fff0);transform:skew(-22deg) translate(-220%);animation:premium-gold-sheen 2.8s ease-in-out infinite;pointer-events:none;z-index:2}@keyframes premium-overlay-fade-in{0%{opacity:0}to{opacity:1}}@keyframes premium-modal-pop-in{0%{opacity:0;transform:translateY(12px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes premium-overlay-fade-out{0%{opacity:1}to{opacity:0}}@keyframes premium-modal-pop-out{0%{opacity:1;transform:translateY(0) scale(1)}to{opacity:0;transform:translateY(10px) scale(.97)}}@media(prefers-reduced-motion:reduce){.premium-exercise-overlay,.premium-exercise-modal{animation:none}.premium-exercise-btn:after{animation:none}}.header{background-color:var(--bg-primary);padding:16px 24px;display:flex;justify-content:space-between;align-items:center;position:relative;flex-shrink:0}.header .header-title{text-align:left}.header h1{margin:0;font-size:28px;font-family:Poppins,sans-serif}.brand-title{display:flex;align-items:baseline;gap:0}.brand-accent{color:var(--accent-primary)}.brand-neutral{color:var(--text-primary)}.app-version{font-size:.75rem;color:var(--text-secondary);margin-top:-4px;display:block}.mute-btn{background:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-primary);border-radius:50%;width:40px;height:40px;cursor:pointer;font-size:1.25rem;display:flex;align-items:center;justify-content:center;padding:0;z-index:1}.settings-btn{background:transparent;border:none;color:var(--text-primary);cursor:pointer;padding:8px;display:flex;align-items:center;justify-content:center;border-radius:50%}.settings-btn:hover,.settings-btn:active{background-color:transparent}.settings-btn.spin{animation:spin-settings 1s ease-in-out}@keyframes spin-settings{0%{transform:rotate(0)}to{transform:rotate(180deg)}}.main-nav{display:flex;justify-content:center;background-color:var(--bg-primary);border-bottom:1px solid var(--border-color);flex-shrink:0;position:relative;overflow:hidden}.main-nav--large{justify-content:flex-start;overflow-x:auto;-ms-overflow-style:none;scrollbar-width:none}.main-nav--large::-webkit-scrollbar{display:none}.main-nav-inner{display:flex;justify-content:center;position:relative;width:100%}.main-nav--large .main-nav-inner{width:auto}.main-nav-btn{background:none;border:none;color:var(--text-secondary);font-family:Poppins,sans-serif;font-size:1rem;font-weight:500;padding:16px 12px;cursor:pointer;position:relative;z-index:2;transition:color .6s cubic-bezier(.68,-.55,.27,1.55);flex-shrink:0;white-space:nowrap;display:flex;align-items:center;gap:8px}.main-nav--fixed .main-nav-btn{font-size:18px}.main-nav--large .main-nav-btn{font-size:1.25rem;padding:20px 24px}.main-nav-btn.active{color:var(--accent-primary)}.underline{position:absolute;bottom:-1px;left:0;height:3px;background-color:var(--accent-primary);z-index:2;transition:transform .6s cubic-bezier(.68,-.55,.27,1.55),width .6s cubic-bezier(.68,-.55,.27,1.55)}.underline.no-transition{transition:none}@keyframes flashConfirm{0%,to{background-color:var(--accent-primary)}50%{background-color:var(--flash-color)}}.underline.animate-flash{animation:flashConfirm .4s ease-out;animation-delay:.2s}.sub-nav{display:flex;background-color:var(--bg-primary);padding:8px 0;border-bottom:1px solid var(--border-color);overflow-x:auto;-ms-overflow-style:none;scrollbar-width:none}.sub-nav::-webkit-scrollbar{display:none}.sub-nav-btn{background:none;border:none;color:var(--text-secondary);font-size:.875rem;padding:8px 16px;cursor:pointer;font-weight:500;white-space:nowrap}.sub-nav-btn.active{color:var(--accent-primary);border-bottom:2px solid var(--accent-primary);padding-bottom:6px}.exercise-list{padding-top:0;display:grid;gap:24px;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));min-width:0}@media(min-width:768px)and (max-width:1024px){.exercise-list{grid-template-columns:repeat(auto-fit,minmax(280px,340px));justify-content:center}}@media(max-width:375px){.exercise-list{grid-template-columns:1fr;gap:16px}.card-tag{top:10px;font-size:.6875rem;padding:5px 8px}.category-tag{left:10px;gap:4px}.level-tag{right:10px}.card-content{padding:14px}.card-title{font-size:1rem;line-height:1.3}.card-meta{gap:8px}.meta-date{align-items:flex-start;flex-wrap:wrap}.meta-date-static{white-space:normal;overflow-wrap:anywhere}.meta-date-badge{margin-left:0}}.exercise-list-item{overflow:hidden;transition:height .26s cubic-bezier(.22,1,.36,1);will-change:height;min-width:0;content-visibility:auto;contain-intrinsic-size:290px;contain:layout style paint}.exercise-list-item--reading{border-radius:20px;contain-intrinsic-size:424px}.exercise-list-item__content{width:100%;height:100%;display:flex}.exercise-list-item__content>.card{width:100%;height:100%}.exercise-card-placeholder{width:100%;border-radius:20px;background:linear-gradient(180deg,#94a3b81f,#94a3b80f);border:1px solid var(--border-color)}.card{background-color:var(--bg-secondary);border-radius:30px 4px;box-shadow:var(--card-shadow);display:flex;flex-direction:column;transition:transform .2s ease-in-out,box-shadow .2s ease-in-out,top .2s ease-in-out;overflow:visible;position:relative;top:0;border:1px solid var(--border-color);min-width:0}.card--clickable{cursor:pointer}.card--clickable:focus-visible{outline:3px solid color-mix(in srgb,var(--accent-primary) 42%,white);outline-offset:3px}.card:before{content:"";position:absolute;inset:0;border-radius:30px 4px;opacity:0;background:transparent;box-shadow:0 0 #d92d2000,0 0 #d92d2000,0 0 #d92d2000;transform:scale(1);pointer-events:none;z-index:-1}.card.card--new:before{animation:exercise-card-new-glow 1.8s ease-in-out infinite}.card.card--new-exiting:before{animation:exercise-card-new-glow-out .52s cubic-bezier(.22,1,.36,1) forwards}.card.card-entering{opacity:0;animation:exercise-card-enter .28s ease-out forwards;will-change:opacity;pointer-events:none}.card-image-container{position:relative;height:120px;border-radius:30px 4px 0 0;overflow:hidden}.card-image-container .card-image{position:absolute;inset:0;width:100%;height:120px;object-fit:cover;display:block;opacity:0;transition:opacity .5s ease-in-out}.card-image-container .card-image.loaded{opacity:1}.card-image-placeholder{position:absolute;inset:0;width:100%;height:120px;display:flex;align-items:center;justify-content:center;background:linear-gradient(45deg,#4527a01a,#4527a005);color:var(--accent-primary);opacity:1}.card-image-placeholder.is-lazy:after{content:"";position:absolute;inset:0;background:linear-gradient(110deg,transparent 0%,rgba(255,255,255,.18) 45%,transparent 100%);transform:translate(-100%);animation:image-lazy-shimmer 1.4s ease-in-out infinite}@media(prefers-color-scheme:dark){.card-image-placeholder{background:linear-gradient(45deg,#673ab740,#673ab70d);color:#fff}}.card-tag{position:absolute;top:12px;background-color:var(--accent-primary);color:#fff;padding:6px 10px;border-radius:8px;font-size:.75rem;font-weight:600;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);max-width:calc(100% - 24px)}.category-tag{left:12px;display:flex;align-items:center;gap:6px}.level-tag{right:12px}.premium-tag{right:12px;top:42px;background:linear-gradient(135deg,#a16207,#eab308);color:#1f2937;font-weight:700;display:inline-flex;align-items:center;gap:4px;box-shadow:0 8px 18px #eab30847}.card--premium{--accent-primary: #c58b12;--accent-primary-hover: #a9710c;--premium-gold-gradient: linear-gradient(135deg, #a16207, #eab308);border-color:#eab30899;background:radial-gradient(120% 85% at 10% 0%,#fff4ba8c,#fff4ba00 58%),linear-gradient(165deg,#fffae0f5,#ffeba3f2 48%,#f1c450e6);box-shadow:0 16px 32px #92640a24,0 0 0 1px #eab30833}.theme-dark .card--premium{background:radial-gradient(120% 85% at 10% 0%,#f7d05c4d,#f7d05c00 58%),linear-gradient(165deg,#5a3e0aeb,#463108f2 52%,#2c1f06fa)}.card--premium .card-tag,.card--premium .complete-btn,.card--premium .complete-btn--reading,.card--premium .complete-btn--reading.completed-reopen{background:var(--premium-gold-gradient);color:#fff;border-color:#eab3088c;box-shadow:0 10px 24px #eab3084d}.card--premium .complete-btn:hover,.card--premium .complete-btn--reading:hover,.card--premium .complete-btn--reading.completed-reopen:hover{background:var(--premium-gold-gradient);filter:brightness(1.03)}.card--premium .premium-tag,.card--premium .category-tag,.card--premium .level-tag,.card--premium .complete-btn,.card--premium .complete-btn--reading{overflow:hidden;isolation:isolate}.card--premium .premium-tag,.card--premium .category-tag,.card--premium .level-tag{position:absolute}.card--premium .complete-btn,.card--premium .complete-btn--reading{position:relative}.card--premium .premium-tag:after,.card--premium .category-tag:after,.card--premium .level-tag:after,.card--premium .complete-btn:after,.card--premium .complete-btn--reading:after{content:"";position:absolute;top:-140%;left:-50%;width:36%;height:280%;background:linear-gradient(90deg,#fff0,#ffffff85,#fff0);transform:skew(-22deg) translate(-220%);animation:premium-sheen-sweep 2.8s ease-in-out infinite;pointer-events:none;z-index:2}.card-content{padding:16px;display:flex;flex-direction:column;flex-grow:1;overflow:visible;min-width:0}.card-title{font-size:1.125rem;font-weight:700;margin:0 0 12px;color:var(--text-primary);line-height:1.4;overflow-wrap:anywhere}.card-meta{display:flex;align-items:center;gap:12px;font-size:.8125rem;color:var(--text-secondary);margin-bottom:12px;min-width:0}.meta-item{display:flex;align-items:center;gap:6px;min-width:0}.meta-date{min-height:24px}.meta-date-badge{display:inline-flex;align-items:center;justify-content:center;background-color:#d92d20;color:#fff;font-weight:700;letter-spacing:.08em;font-size:.6875rem;padding:4px 8px;border-radius:999px;margin-left:8px;animation:exercise-new-pulse 1.8s ease-in-out infinite}.meta-date-badge--exiting{animation:exercise-new-pop-out .52s cubic-bezier(.22,1,.36,1) forwards}.meta-date-static{white-space:nowrap}.new-tag{background-color:#d92d20;color:#fff;font-weight:600;padding:4px 8px;border-radius:6px}.card-divider{border:none;height:1px;background-color:var(--border-color);margin:0 0 12px}.vocab-label{font-size:.8125rem;font-weight:600;color:var(--text-secondary);margin:0 0 8px}.vocab-tags{display:flex;flex-wrap:wrap;gap:8px}.vocab-tag{background-color:var(--tag-bg);color:var(--tag-text);padding:4px 10px;border-radius:12px;font-size:.75rem;font-weight:500;position:relative;cursor:pointer;-webkit-tap-highlight-color:transparent;transition:width .2s ease-in-out}@media(prefers-color-scheme:dark){.vocab-tag{background-color:var(--accent-primary)!important;color:#fff!important}}.theme-dark .vocab-tag{background-color:var(--accent-primary)!important;color:#fff!important}.complete-btn.completed{background-color:var(--bg-tertiary);color:var(--text-secondary);cursor:not-allowed}.vocab-tag.is-loading{background-color:var(--tag-bg);position:relative;overflow:hidden}.vocab-tag.is-loading .vocab-term{color:transparent}.vocab-tag.is-loading:after{content:"";position:absolute;top:0;left:-150%;width:150%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);animation:shimmer 1.5s infinite}.vocab-tag .vocab-term{opacity:0;transition:opacity .3s ease-in-out}.vocab-tag .vocab-term.is-loaded{opacity:1}@keyframes shimmer{to{left:150%}}@keyframes image-lazy-shimmer{to{transform:translate(100%)}}@keyframes exercise-new-pulse{0%,to{transform:scale(1);box-shadow:0 0 #d92d2038}50%{transform:scale(1.06);box-shadow:0 0 0 8px #d92d2000}}@keyframes exercise-card-new-glow{0%,to{opacity:.52;box-shadow:0 0 6px #d92d2014,0 0 14px 2px #d92d200d,0 0 22px 5px #d92d2008}50%{opacity:.9;box-shadow:0 0 8px #d92d201c,0 0 18px 3px #d92d2014,0 0 28px 7px #d92d200b}}@keyframes exercise-new-pop{0%{opacity:1;transform:scale(1)}70%{opacity:1;transform:scale(1.14)}to{opacity:0;transform:scale(.84)}}@keyframes exercise-card-new-glow-out{0%{opacity:.62;transform:scale(1);box-shadow:0 0 7px #d92d2017,0 0 16px 3px #d92d2011,0 0 24px 6px #d92d200a}45%{opacity:.78;transform:scale(1.045);box-shadow:0 0 10px 1px #d92d201c,0 0 24px 5px #d92d2014,0 0 34px 9px #d92d200d}to{opacity:0;transform:scale(.96);box-shadow:0 0 4px #d92d2000,0 0 10px 1px #d92d2000,0 0 16px 3px #d92d2000}}@keyframes exercise-new-pop-out{0%{opacity:1;transform:scale(1);filter:blur(0)}45%{opacity:1;transform:scale(1.16);filter:blur(0)}to{opacity:0;transform:scale(.74);filter:blur(2px)}}@keyframes exercise-card-enter{0%{opacity:0}to{opacity:1}}@keyframes premium-sheen-sweep{0%{transform:skew(-22deg) translate(-220%)}58%{transform:skew(-22deg) translate(-220%)}to{transform:skew(-22deg) translate(560%)}}.card--reading .card-image-container{position:absolute;inset:0;height:100%;border-radius:inherit}.card--reading .card-image-container .card-image,.card--reading .card-image-placeholder{height:100%}.card--reading{min-height:424px;height:424px;border-radius:20px;border:none;background:#000;box-shadow:0 16px 28px -14px #0000006b;overflow:hidden;justify-content:flex-end}.card--reading:after{content:"";position:absolute;inset:0;z-index:2;background:linear-gradient(to top,#000000b8,#00000057 42%,#0000000a);pointer-events:none}.card--reading .card-image-container{z-index:1}.card--reading .card-image-container .card-image{object-fit:cover;object-position:center bottom}.card--reading .card-image-placeholder{background:linear-gradient(145deg,#f1f5f9f2,#e2e8f0fa);color:#1c1e21b3}.card--reading .card-tag{top:18px;z-index:10;padding:8px 14px;border-radius:12px;font-size:.9rem;font-weight:700;color:#fff;opacity:1;background:var(--accent-primary);border:1px solid color-mix(in srgb,var(--accent-primary) 84%,#ffffff 16%);box-shadow:0 10px 24px color-mix(in srgb,var(--accent-primary) 26%,rgba(0,0,0,.18)),inset 0 1px #ffffff1f}.card--reading .card-tag svg{opacity:1}.card--reading .category-tag{left:18px}.card--reading .level-tag{right:18px}.card-content--reading{position:absolute;inset:auto 0 0;z-index:10;gap:14px;padding:24px;color:#fff}.card--reading .card-title{margin:0;color:#fff;font-size:clamp(1.5rem,2vw,1.8rem);line-height:1.16;letter-spacing:-.03em;text-shadow:0 2px 10px rgba(0,0,0,.35)}.card-meta--reading{gap:10px;margin-bottom:0;color:#e2e8f0e0;font-size:.98rem}.card--reading .meta-date{min-height:0}.card--reading .meta-item{gap:8px}.card--reading .meta-item svg{opacity:.84}.card--reading .meta-date-static{white-space:nowrap}.card--reading .meta-date-badge{background:var(--accent-primary);box-shadow:0 8px 24px color-mix(in srgb,var(--accent-primary) 28%,transparent)}@media(prefers-color-scheme:dark){.card--reading:after{background:linear-gradient(to top,#000000f2,#0009 42%,#0000001f)}.card--reading .card-image-placeholder{background:linear-gradient(145deg,#121827e0,#0a101dfa);color:#ffffffc7}}.card--reading .progress-wrapper{margin-top:4px}.card--reading .progress-bar-container{height:8px;border-radius:999px;background-color:#ffffff38;margin-bottom:0}.card--reading .progress-bar-segment.correct{background-color:#10b981}.card--reading .progress-bar-segment.incorrect{background-color:#ef4444}.card--reading .progress-bar-segment.missing{background-color:#ffffff42}.complete-btn--reading{min-height:54px;margin-top:6px;border-radius:16px;background:var(--accent-primary);color:#fff;font-size:1rem;font-weight:700;display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:12px 18px;box-shadow:0 10px 16px color-mix(in srgb,var(--accent-primary) 24%,transparent)}.complete-btn--reading:hover{background:var(--accent-primary-hover);transform:translateY(-2px)}.complete-btn--reading:active{transform:translateY(0)}.complete-btn--reading.completed-reopen{background:var(--accent-primary);color:#fff;cursor:pointer}.complete-btn--reading.completed-reopen:hover{background:var(--accent-primary-hover)}.complete-btn--reading svg{flex:0 0 auto}.exercise-card-btn-spinner{width:18px;height:18px;border-radius:999px;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;animation:spin .8s linear infinite}@media(max-width:375px){.card--reading{min-height:394px;height:394px}.card--reading .card-tag{top:16px;padding:7px 12px;font-size:.82rem}.card--reading .category-tag{left:16px}.card--reading .level-tag{right:16px}.card-content--reading{padding:20px;gap:12px}.card--reading .card-title{font-size:1.32rem}.card-meta--reading{font-size:.92rem}.complete-btn--reading{min-height:50px;border-radius:14px;padding:11px 16px}}@media(max-width:700px){.card{box-shadow:0 6px 14px #0000001a}.card-tag{-webkit-backdrop-filter:none;backdrop-filter:none}.card--reading{box-shadow:0 12px 22px -14px #0006}.card-content--reading{padding:20px}}.skeleton-exercise-card .skeleton{background-color:#e0e0e0;position:relative;overflow:hidden}.skeleton-exercise-card .skeleton:after{content:"";position:absolute;top:0;left:-150%;width:150%;height:100%;background:linear-gradient(to right,transparent 0%,#e8e8e8 50%,transparent 100%);animation:shimmer 1.5s infinite}.skeleton-exercise-card .card-image-container,.skeleton-exercise-card .card-image-placeholder.skeleton{height:100%}.skeleton-exercise-card .skeleton-text{height:1em;border-radius:4px;display:inline-block;vertical-align:middle}.skeleton-exercise-card .card-title.skeleton-text{height:28px;margin-bottom:0;width:88%}.skeleton-exercise-card .card-meta .meta-item .skeleton-text{height:14px}.skeleton-exercise-card .skeleton-level-text{width:18px;height:14px}.skeleton-exercise-card .progress-bar-skeleton{height:8px;border-radius:999px;margin:0}.skeleton-exercise-card .complete-btn.skeleton{width:100%;height:60px;border-radius:16px}.skeleton-exercise-card .card-tag{display:inline-flex;align-items:center;gap:5px}.language-settings-card{padding:24px;border-bottom:1px solid var(--border-color)}.language-settings-card.language-settings-card--embedded{padding:20px 0 0;border-bottom:none;border-top:1px solid var(--border-color)}.language-settings-card h3{margin-top:0;margin-bottom:20px;font-size:.9rem;color:var(--accent-primary);font-weight:700;text-transform:uppercase;letter-spacing:.1em;border-bottom:2px solid var(--bg-secondary);padding-bottom:8px}.language-settings-card.language-settings-card--embedded h3{margin-bottom:18px}.language-group{display:flex;flex-direction:column;gap:20px}.language-item{display:flex;flex-direction:column;align-items:flex-start;gap:8px}.language-item.row{flex-direction:row;justify-content:space-between;align-items:center}.language-label{font-weight:500;color:var(--text-primary)}.language-select{width:100%;max-width:100%;padding:12px;border-radius:12px;border:1px solid var(--border-color);background-color:var(--bg-secondary);color:var(--text-primary);font-size:1rem;transition:border-color .2s ease,background-color .2s ease,color .2s ease,box-shadow .2s ease;box-sizing:border-box;appearance:none;background-image:url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");background-repeat:no-repeat;background-position:right 12px center;background-size:16px}.language-select:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px #2563eb1a;background-color:var(--bg-primary)}.language-settings-card.is-saving .language-item:not(.row){opacity:.72}.language-select:disabled{background-color:color-mix(in srgb,var(--accent-primary) 8%,var(--bg-secondary) 92%);border-color:color-mix(in srgb,var(--accent-primary) 32%,var(--border-color) 68%);color:color-mix(in srgb,var(--text-primary) 72%,transparent);cursor:wait;filter:blur(.45px) saturate(.82);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--accent-primary) 20%,transparent)}.language-settings-card.is-saving .language-select:disabled{background-image:linear-gradient(135deg,color-mix(in srgb,var(--accent-primary) 10%,transparent),transparent),url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");background-repeat:no-repeat,no-repeat;background-position:left 0 top 0,right 12px center;background-size:auto,16px}.language-settings-card.is-saving .language-item.row .slider{cursor:wait;background-color:color-mix(in srgb,var(--accent-primary) 24%,var(--bg-tertiary, #ccc) 76%);box-shadow:0 0 0 1px color-mix(in srgb,var(--accent-primary) 20%,transparent)}.switch.is-disabled{opacity:.7}.switch.is-disabled .slider{cursor:not-allowed;background-color:color-mix(in srgb,var(--accent-primary) 18%,var(--bg-tertiary, #ccc) 82%);box-shadow:0 0 0 1px color-mix(in srgb,var(--accent-primary) 16%,transparent);filter:saturate(.82)}.switch.is-disabled .slider:before{box-shadow:0 2px 4px #00000024}.switch{position:relative;display:inline-block;width:50px;height:28px}.slider{position:absolute;cursor:pointer;inset:0;background-color:var(--bg-tertiary, #ccc);transition:.4s;border-radius:34px}.slider:before{position:absolute;content:"";height:20px;width:20px;left:4px;bottom:4px;background-color:#fff;transition:.4s;border-radius:50%;box-shadow:0 2px 4px #0003}input:checked+.slider{background-color:var(--accent-primary, #4caf50)}input:focus+.slider{box-shadow:0 0 1px var(--accent-primary, #4caf50)}input:checked+.slider:before{transform:translate(22px)}.button-spinner{width:20px;height:20px;border:2px solid var(--bg-primary);border-bottom-color:transparent;border-radius:50%;display:inline-block;box-sizing:border-box;animation:rotation 1s linear infinite}@keyframes rotation{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.dashboard-container{display:flex;flex-direction:column;gap:32px;width:100%;max-width:1200px;margin:0 auto}.dashboard-card{background-color:var(--bg-secondary);border-radius:16px;padding:24px;box-shadow:var(--card-shadow);transition:all .3s ease}.user-info-card{display:flex;flex-direction:column;gap:24px}.user-card-header{display:flex;align-items:center;gap:16px;min-width:0}.user-avatar{width:56px;height:56px;border-radius:50%;background-color:var(--accent-primary);color:var(--bg-secondary);display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px #0000001a;overflow:hidden;flex:0 0 56px}.user-avatar-image{width:100%;height:100%;object-fit:cover;display:block}.user-details{display:flex;flex-direction:column;min-width:0;flex:1}.user-card-header .leaderboard-launch-btn--header{flex:0 0 66px;width:66px;min-height:62px;align-self:center}.user-name{margin:0;font-size:1.5rem;font-weight:700;color:var(--text-primary);line-height:1.2;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%}.username-edit-trigger{display:block;width:100%;min-width:0;padding:0;border:0;background:transparent;text-align:left;cursor:pointer}.username-edit-trigger:focus-visible{outline:3px solid color-mix(in srgb,var(--accent-primary) 38%,transparent);outline-offset:4px;border-radius:8px}.user-name--medium{font-size:1.35rem}.user-name--small{font-size:1.15rem}.user-name--tiny{font-size:1rem}.user-role{font-size:.9rem;color:var(--text-secondary);font-weight:500}.user-role-row{display:flex;align-items:center;gap:8px;min-height:30px;flex-wrap:wrap}.user-role--premium{color:var(--accent-primary);font-weight:700}.premium-upgrade-pill{min-height:28px;border:0;border-radius:999px;background:linear-gradient(135deg,#a16207,#eab308);color:#1f2937;box-shadow:0 8px 18px #eab3084d;cursor:pointer;font:inherit;font-size:.72rem;font-weight:800;letter-spacing:.04em;line-height:1;padding:7px 11px;text-transform:uppercase;position:relative;overflow:hidden;isolation:isolate}.user-card-header .premium-upgrade-pill{margin-top:3px}.premium-upgrade-pill:after{content:"";position:absolute;top:-140%;left:-50%;width:34%;height:280%;background:linear-gradient(90deg,#fff0,#ffffff85,#fff0);transform:skew(-22deg) translate(-220%);animation:premium-gold-sheen 2.8s ease-in-out infinite;pointer-events:none;z-index:2}.premium-upgrade-pill:focus-visible{outline:3px solid rgba(234,179,8,.35);outline-offset:2px}@keyframes premium-gold-sheen{0%{transform:skew(-22deg) translate(-220%)}58%{transform:skew(-22deg) translate(-220%)}to{transform:skew(-22deg) translate(560%)}}.teacher-connect-pill{margin-top:0;align-self:flex-start;min-height:30px;border:1px solid color-mix(in srgb,var(--accent-primary) 28%,var(--border-color));border-radius:999px;background:color-mix(in srgb,var(--accent-primary) 7%,#ffffff 93%);color:color-mix(in srgb,var(--accent-primary) 78%,#1f2937 22%);cursor:pointer;font:inherit;font-size:.74rem;font-weight:800;letter-spacing:.04em;line-height:1;padding:8px 12px;text-transform:uppercase;display:inline-flex;align-items:center;gap:8px}.teacher-connect-pill.is-connected{background:color-mix(in srgb,var(--accent-primary) 22%,#ffffff 78%);color:color-mix(in srgb,var(--accent-primary) 92%,#000000 8%);border-color:color-mix(in srgb,var(--accent-primary) 50%,var(--border-color))}.teacher-connect-pill-icon{width:16px;height:16px;display:inline-flex;align-items:center;justify-content:center}.teacher-connect-pill-icon svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.teacher-connect-row{margin-top:8px;margin-left:0;display:flex;align-items:center}.teacher-connect-modal-overlay{position:fixed;inset:0;z-index:12010;display:flex;align-items:center;justify-content:center;padding:18px;background:#00000094;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);opacity:0;transition:opacity .22s ease}.teacher-connect-modal-overlay.is-open{opacity:1}.teacher-connect-modal-overlay.is-closing{opacity:0}.teacher-connect-modal{width:min(460px,100%);overflow:hidden;border-radius:16px;background:var(--bg-primary);box-shadow:0 24px 70px #00000057;opacity:0;transform:translateY(12px) scale(.96);transition:opacity .26s cubic-bezier(.22,1,.36,1),transform .26s cubic-bezier(.22,1,.36,1)}.teacher-connect-modal-overlay.is-open .teacher-connect-modal{opacity:1;transform:translateY(0) scale(1)}.teacher-connect-modal-overlay.is-closing .teacher-connect-modal{opacity:0;transform:translateY(8px) scale(.97)}.teacher-connect-modal-header{display:flex;justify-content:space-between;gap:18px;padding:22px 24px;border-bottom:1px solid var(--border-color);background:var(--bg-secondary)}.teacher-connect-modal-eyebrow{margin:0 0 5px;color:var(--accent-primary);font-size:.75rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase}.teacher-connect-modal h3{margin:0;color:var(--text-primary);font-size:1.35rem;line-height:1.15}.teacher-connect-modal-close{width:38px;height:38px;flex:0 0 38px;border:1px solid var(--border-color);border-radius:50%;background:var(--bg-secondary);color:var(--text-secondary);cursor:pointer;font-size:1.35rem;line-height:1}.teacher-connect-modal-body{padding:22px 24px 24px}.teacher-connect-modal-body p{margin:0 0 14px;color:var(--text-secondary);line-height:1.45}.teacher-connect-label{display:block;margin-bottom:8px;color:var(--text-primary);font-size:.83rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase}.teacher-connect-input{width:100%;min-height:64px;border:2px solid color-mix(in srgb,var(--accent-primary) 36%,var(--border-color));border-radius:10px;background:var(--bg-secondary);color:var(--accent-primary);padding:0 12px;font:inherit;font-size:1.6rem;font-weight:800;letter-spacing:.22em;text-transform:uppercase;text-align:center;margin-bottom:14px}.teacher-connect-input::placeholder{color:color-mix(in srgb,var(--accent-primary) 62%,#ffffff 38%);opacity:1}.teacher-connect-input:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent-primary) 22%,transparent)}.teacher-connect-submit,.teacher-disconnect-submit,.teacher-disconnect-cancel{min-height:46px;border-radius:10px;cursor:pointer;font:inherit;font-weight:800;padding:10px 14px}.teacher-connect-submit,.teacher-disconnect-submit{display:inline-flex;align-items:center;justify-content:center;gap:8px}.teacher-connect-submit,.teacher-disconnect-submit{width:100%;border:1px solid var(--accent-primary);background:var(--accent-primary);color:#fff;min-width:120px}.teacher-disconnect-cancel{border:1px solid var(--border-color);background:var(--bg-secondary);color:var(--text-primary)}.teacher-disconnect-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}.teacher-connect-submit:disabled,.teacher-disconnect-submit:disabled,.teacher-disconnect-cancel:disabled{opacity:.72;cursor:not-allowed}.teacher-connect-message{font-size:.88rem;font-weight:700;border-radius:10px;padding:10px 12px;border:1px solid transparent}.teacher-connect-message--error{color:#b91c1c;background:#fee2e2;border-color:#fca5a5}.teacher-connect-message--success{color:#065f46;background:#d1fae5;border-color:#6ee7b7}@media(prefers-color-scheme:dark){.teacher-connect-pill{background:color-mix(in srgb,var(--accent-primary) 18%,var(--bg-secondary));color:color-mix(in srgb,var(--accent-primary) 76%,#ffffff 24%);border-color:color-mix(in srgb,var(--accent-primary) 34%,var(--border-color))}.teacher-connect-pill.is-connected{background:color-mix(in srgb,var(--accent-primary) 38%,var(--bg-secondary));color:#fff;border-color:color-mix(in srgb,var(--accent-primary) 62%,var(--border-color))}.teacher-connect-message--error{color:#fecaca;background:#7f1d1d61;border-color:#f8717157}.teacher-connect-message--success{color:#bbf7d0;background:#064e3b5c;border-color:#34d39957}}.teacher-connect-connected-title{color:var(--text-primary)!important}.teacher-email-row,.teacher-name-row{display:flex;align-items:baseline;gap:8px;width:100%;min-width:0}.teacher-name-value{color:var(--text-secondary);max-width:100%;min-width:0;overflow-wrap:anywhere;word-break:break-word}.teacher-name-value.is-revealed{animation:teacherEmailReveal .24s ease both}.teacher-name-value--shimmer{width:min(180px,48vw);height:1em;border-radius:5px;background:linear-gradient(90deg,#94a3b82e,#94a3b85c,#94a3b82e 88%);background-size:220% 100%;display:inline-block;overflow:hidden;animation:teacherEmailShimmer 1.05s ease-in-out infinite}.teacher-email-value{border:0;background:transparent;color:var(--text-secondary);font:inherit;margin:0;padding:0;max-width:100%;min-width:0;overflow-wrap:anywhere;word-break:break-word;text-align:left;cursor:default}.teacher-email-value.is-revealed{animation:teacherEmailReveal .24s ease both}.teacher-email-value--default{font-size:1rem}.teacher-email-value--small{font-size:.92rem}.teacher-email-value--tiny{font-size:.82rem}.teacher-email-value.is-hidden{filter:blur(6px);-webkit-user-select:none;user-select:none;cursor:pointer;animation-name:teacherEmailHiddenReveal}.teacher-email-value--shimmer{width:min(210px,58vw);height:1em;border-radius:5px;background:linear-gradient(90deg,#94a3b82e,#94a3b85c,#94a3b82e 88%);background-size:220% 100%;display:inline-block;overflow:hidden;animation:teacherEmailShimmer 1.05s ease-in-out infinite}@keyframes teacherEmailShimmer{0%{background-position:120% 0}to{background-position:-120% 0}}@keyframes teacherEmailReveal{0%{opacity:0;transform:translateY(3px)}to{opacity:1;transform:translateY(0)}}@keyframes teacherEmailHiddenReveal{0%{opacity:0;filter:blur(10px);transform:translateY(3px)}to{opacity:1;filter:blur(6px);transform:translateY(0)}}.premium-modal-overlay{position:fixed;inset:0;z-index:12000;display:flex;align-items:center;justify-content:center;padding:18px;background:#00000094;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);opacity:0;transition:opacity .26s ease}.premium-modal-overlay.is-open{opacity:1}.premium-modal{width:min(460px,100%);overflow:hidden;border-radius:16px;background:var(--bg-primary);box-shadow:0 24px 70px #00000057;transform:translateY(12px) scale(.97);opacity:0;transition:transform .26s ease,opacity .26s ease}.premium-modal-overlay.is-open .premium-modal{transform:translateY(0) scale(1);opacity:1}.premium-modal-header{display:flex;justify-content:space-between;gap:18px;padding:22px 24px;border-bottom:1px solid var(--border-color);background:var(--bg-secondary)}.premium-modal-eyebrow{margin:0 0 5px;color:var(--accent-primary);font-size:.75rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase}.premium-modal h3{margin:0;color:var(--text-primary);font-size:1.35rem;line-height:1.15}.premium-modal-close{width:38px;height:38px;flex:0 0 38px;border:1px solid var(--border-color);border-radius:50%;background:var(--bg-secondary);color:var(--text-secondary);cursor:pointer;font-size:1.35rem;line-height:1}.premium-modal-body{padding:22px 24px 24px}.premium-modal-body p{margin:0 0 18px;color:var(--text-secondary);line-height:1.45}.premium-modal-price-label{margin:0 0 6px!important;color:var(--text-secondary);font-size:.8rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase}.premium-modal-price-value{margin:0 0 6px!important;color:var(--text-primary);font-size:2rem;font-weight:900;line-height:1.05}.premium-modal-price-note{margin:0 0 16px!important;color:var(--text-secondary);font-size:.82rem;font-weight:600}.premium-modal-feature-list{margin:0 0 16px;padding-left:18px;color:var(--text-primary)}.premium-modal-feature-list li{margin:0 0 8px;line-height:1.35;font-size:.95rem;font-weight:600}.premium-modal-country-note{margin:-2px 0 14px!important;color:var(--text-secondary);font-size:.74rem;line-height:1.35;opacity:.88}.premium-modal-purchase{width:100%;min-height:46px;border:1px solid var(--accent-primary);border-radius:8px;background:var(--accent-primary);color:#fff;cursor:pointer;font:inherit;font-weight:800;padding:10px 14px}.premium-modal-restore{width:100%;min-height:42px;margin-top:10px;border:1px solid var(--border-color);border-radius:8px;background:var(--bg-secondary);color:var(--text-primary);cursor:pointer;font:inherit;font-weight:700;padding:9px 14px}.premium-modal-purchase:disabled,.premium-modal-close:disabled,.premium-modal-restore:disabled{opacity:.65;cursor:default}.premium-modal-message{margin-top:14px!important;font-size:.88rem;font-weight:650}.premium-modal-message--error{color:#b91c1c!important}.premium-modal-message--success{color:#15803d!important}.premium-modal-version{margin:10px 0 0!important;color:var(--text-secondary);font-size:.74rem;opacity:.82;text-align:center}.user-progress-section{margin-top:8px}.account-progress-actions{display:block;margin-top:8px}.account-progress-actions .user-progress-section{margin-top:0;min-width:0;width:100%}.achievement-progress-card{width:100%;border:0;border-radius:0;padding:0;background:transparent;color:inherit;cursor:pointer;text-align:left;transition:opacity .2s ease}.leaderboard-launch-btn{width:78px;min-height:58px;flex:0 0 78px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;border:2px solid color-mix(in srgb,var(--accent-primary) 58%,var(--border-color));border-radius:16px;background:color-mix(in srgb,var(--accent-primary) 7%,var(--bg-secondary));color:var(--accent-primary);cursor:pointer;box-shadow:0 8px 22px color-mix(in srgb,var(--accent-primary) 12%,transparent);transition:transform .2s ease,border-color .2s ease,background .2s ease}.leaderboard-launch-btn--header .leaderboard-icon{width:31px;height:31px}.leaderboard-launch-btn--header .leaderboard-launch-rank{font-size:.68rem}@media(max-width:420px){.user-card-header{gap:11px}.user-avatar{width:52px;height:52px;flex-basis:52px}.user-card-header .leaderboard-launch-btn--header{width:62px;flex-basis:62px}.user-name--default{font-size:1.35rem}.user-name--medium{font-size:1.18rem}.user-name--small{font-size:1.02rem}.user-name--tiny{font-size:.9rem}}.leaderboard-launch-btn:hover{transform:translateY(-2px);border-color:var(--accent-primary);background:color-mix(in srgb,var(--accent-primary) 14%,var(--bg-secondary))}.leaderboard-launch-btn:active{transform:translateY(0) scale(.97)}.leaderboard-launch-btn:focus-visible{outline:3px solid color-mix(in srgb,var(--accent-primary) 34%,transparent);outline-offset:3px}.leaderboard-icon{width:34px;height:34px;overflow:visible}.leaderboard-launch-rank{color:var(--text-primary);font-size:.72rem;font-weight:900;line-height:1}.leaderboard-icon-bar{fill:color-mix(in srgb,var(--accent-primary) 30%,transparent);stroke:currentColor;stroke-width:2}.leaderboard-icon-arrow,.leaderboard-icon-arrow-head{fill:none;stroke:currentColor;stroke-width:3.2;stroke-linecap:round;stroke-linejoin:round}.leaderboard-icon-star{fill:#f7c948;stroke:color-mix(in srgb,#f7c948 55%,#7c5d00);stroke-width:1.2}.leaderboard-modal-overlay{position:fixed;inset:0;z-index:12060;display:grid;place-items:center;padding:18px;background:#00000094;-webkit-backdrop-filter:blur(7px);backdrop-filter:blur(7px);opacity:0;pointer-events:none;transition:opacity .22s ease}.leaderboard-modal-overlay.is-open{opacity:1;pointer-events:auto}.leaderboard-modal{width:min(540px,100%);max-height:calc(100dvh - 24px);overflow:hidden;touch-action:pan-y;border:1px solid color-mix(in srgb,var(--accent-primary) 22%,var(--border-color));border-radius:24px;background:var(--bg-primary);box-shadow:0 28px 80px #00000061;opacity:0;transform:translateY(16px) scale(.97);transition:opacity .24s ease,transform .24s ease}.leaderboard-help-btn{width:calc(100% - 32px);min-height:42px;display:flex;align-items:center;justify-content:center;gap:8px;margin:12px 16px 0;border:1px solid color-mix(in srgb,var(--accent-primary) 24%,var(--border-color));border-radius:12px;background:color-mix(in srgb,var(--accent-primary) 7%,var(--bg-secondary));color:var(--accent-primary);cursor:pointer;font:inherit;font-size:.84rem;font-weight:800}.leaderboard-help-btn span{width:20px;height:20px;display:grid;place-items:center;border:2px solid currentColor;border-radius:50%;font-size:.72rem;line-height:1}.leaderboard-modal-overlay.is-open .leaderboard-modal{opacity:1;transform:translateY(0) scale(1)}.leaderboard-modal-header{display:flex;align-items:center;justify-content:space-between;padding:20px 22px 16px;background:var(--bg-secondary);border-bottom:1px solid var(--border-color)}.leaderboard-modal-header p{margin:0 0 3px;color:var(--accent-primary);font-size:.74rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase}.leaderboard-modal-header h3{margin:0;color:var(--text-primary);font-size:1.5rem}.leaderboard-modal-header button{width:38px;height:38px;border:1px solid var(--border-color);border-radius:50%;background:var(--bg-primary);color:var(--text-secondary);cursor:pointer;font-size:1.4rem}.leaderboard-period-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin:14px 16px 8px;padding:4px;border-radius:14px;background:var(--bg-secondary)}.leaderboard-period-tabs button{border:0;border-radius:10px;padding:9px 6px;background:transparent;color:var(--text-secondary);cursor:pointer;font:inherit;font-size:.78rem;font-weight:750}.leaderboard-period-tabs button.is-active{background:var(--accent-primary);color:#fff;box-shadow:0 5px 14px color-mix(in srgb,var(--accent-primary) 28%,transparent)}.leaderboard-period-tabs button:disabled{cursor:default}.leaderboard-fixed-list{min-height:385px;display:grid;grid-template-rows:repeat(7,minmax(48px,1fr));gap:6px;padding:7px 16px 16px;overflow:hidden;user-select:none;-webkit-user-select:none}.leaderboard-row{min-width:0;display:grid;grid-template-columns:48px 34px minmax(0,1fr) auto;align-items:center;gap:10px;padding:8px 12px;border:1px solid var(--border-color);border-radius:15px;background:var(--bg-secondary)}.leaderboard-fixed-list.is-exiting.exit-right .leaderboard-row:not(.is-skeleton){animation:leaderboard-row-exit-right .34s ease-in both;animation-delay:calc(var(--leaderboard-row-index, 0) * .04s)}.leaderboard-fixed-list.is-exiting.exit-left .leaderboard-row:not(.is-skeleton){animation:leaderboard-row-exit-left .34s ease-in both;animation-delay:calc(var(--leaderboard-row-index, 0) * .04s)}.leaderboard-fixed-list.is-pre-enter .leaderboard-row:not(.is-skeleton){opacity:0;transform:translateY(385px) scale(.94)}.leaderboard-fixed-list.is-entering .leaderboard-row:not(.is-skeleton){animation:leaderboard-row-enter-up .42s cubic-bezier(.16,1,.3,1) both;animation-delay:calc(var(--leaderboard-row-index, 0) * 75ms)}.leaderboard-row.is-current-user{position:relative;isolation:isolate;overflow:hidden;border-width:2px;border-color:var(--accent-primary);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent-primary) 12%,transparent)}.leaderboard-row.is-current-user:after{content:"";position:absolute;inset:-70% auto -70% -45%;width:24%;background:linear-gradient(90deg,transparent,color-mix(in srgb,#ffffff 60%,transparent),transparent);transform:skew(-18deg) translate(-220%);animation:leaderboard-current-user-sheen 3.2s ease-in-out infinite;pointer-events:none}.leaderboard-fixed-list.is-entering .leaderboard-row.is-rank-climb-pending{z-index:4;animation:leaderboard-award-row-enter-old .52s cubic-bezier(.16,1,.3,1) both;animation-delay:.45s}.leaderboard-fixed-list.is-settled .leaderboard-row.is-rank-climb-pending{z-index:4;transform:translateY(var(--rank-climb-distance));box-shadow:0 10px 24px color-mix(in srgb,var(--accent-primary) 18%,transparent),0 0 0 3px color-mix(in srgb,var(--accent-primary) 12%,transparent)}.leaderboard-row.is-rank-climbing{z-index:6;animation:leaderboard-rank-climb 1.25s cubic-bezier(.16,1,.3,1) both}.leaderboard-row.is-rank-climbing:before{content:"";position:absolute;inset:12% 8% 12% -32%;z-index:0;border-radius:18px;background:linear-gradient(90deg,transparent 0 10%,rgba(56,189,248,.08) 22%,rgba(59,130,246,.72) 58%,transparent 100%),repeating-linear-gradient(0deg,transparent 0 7px,rgba(125,211,252,.45) 8px 10px);filter:blur(5px);opacity:.78;transform:translate(-12%);animation:leaderboard-blue-speed-lines .38s linear infinite;pointer-events:none}.leaderboard-row.is-rank-climbing>*{position:relative;z-index:2}.leaderboard-row.is-rank-climbing.is-long-rank-climb{box-shadow:0 0 26px #3b82f6b3,0 12px 32px #2563eb61}.leaderboard-row.is-being-overtaken{animation:leaderboard-row-overtaken .48s ease-out both;animation-delay:calc((6 - var(--leaderboard-row-index, 0)) * 55ms)}.leaderboard-row.is-rank-1{border-color:#d6a600;background:linear-gradient(100deg,color-mix(in srgb,#f7c948 22%,var(--bg-secondary)),var(--bg-secondary) 70%)}.leaderboard-row.is-rank-2{border-color:#9aa4b2;background:linear-gradient(100deg,color-mix(in srgb,#cbd5e1 25%,var(--bg-secondary)),var(--bg-secondary) 70%)}.leaderboard-row.is-rank-3{border-color:#b87333;background:linear-gradient(100deg,color-mix(in srgb,#cd7f32 21%,var(--bg-secondary)),var(--bg-secondary) 70%)}.leaderboard-row.is-current-user.is-rank-1,.leaderboard-row.is-current-user.is-rank-2,.leaderboard-row.is-current-user.is-rank-3{border-color:var(--accent-primary)}.leaderboard-row.is-skeleton{display:block;border-color:transparent;background:linear-gradient(90deg,var(--bg-secondary),color-mix(in srgb,var(--text-secondary) 10%,var(--bg-secondary)),var(--bg-secondary));background-size:220% 100%;animation:leaderboard-shimmer 1.15s linear infinite}.leaderboard-rank{color:var(--accent-primary);font-weight:900;text-align:center}.leaderboard-rank.is-three-digit{font-size:.8rem;letter-spacing:-.035em}.leaderboard-rank.is-four-plus-digits{font-size:.68rem;letter-spacing:-.055em}.leaderboard-flag-button{width:30px;height:22px;display:block;padding:0;border:0;border-radius:4px;background:transparent;appearance:none;-webkit-appearance:none}.leaderboard-flag{width:30px;height:22px;display:block;border-radius:4px;object-fit:cover;box-shadow:0 1px 4px #0000002e;opacity:1;transform:scale(1);transition:opacity .14s ease,transform .18s ease}.leaderboard-flag.is-changing{opacity:0;transform:scale(.96)}.leaderboard-flag.is-loading{background:linear-gradient(90deg,var(--border-color),var(--bg-primary),var(--border-color));background-size:200% 100%;animation:leaderboard-shimmer 1.15s linear infinite}.leaderboard-username{min-width:0;max-width:100%;overflow:hidden;color:var(--text-primary);font-weight:750;text-overflow:ellipsis;white-space:nowrap}.leaderboard-help-overlay{position:fixed;inset:0;z-index:12070;display:grid;place-items:center;padding:22px;background:#0000009e;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);opacity:0;transition:opacity .24s ease}.leaderboard-help-overlay.is-open{opacity:1}.leaderboard-help-modal{width:min(430px,100%);padding:20px;border:1px solid color-mix(in srgb,var(--accent-primary) 24%,var(--border-color));border-radius:22px;background:var(--bg-primary);color:var(--text-primary);box-shadow:0 28px 80px #0000006b;opacity:0;transform:translateY(22px) scale(.94);transition:opacity .26s ease,transform .3s cubic-bezier(.16,1,.3,1)}.leaderboard-help-overlay.is-open .leaderboard-help-modal{opacity:1;transform:translateY(0) scale(1)}.leaderboard-help-overlay.is-closing .leaderboard-help-modal{opacity:0;transform:translateY(14px) scale(.97)}.leaderboard-help-modal header{display:flex;align-items:center;justify-content:space-between;gap:16px}.leaderboard-help-modal h3{margin:0;font-size:1.25rem}.leaderboard-help-modal header button{width:36px;height:36px;flex:0 0 36px;border:1px solid var(--border-color);border-radius:50%;background:var(--bg-secondary);color:var(--text-secondary);cursor:pointer;font-size:1.35rem}.leaderboard-help-list{display:grid;gap:10px;margin:20px 0}.leaderboard-help-item{display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:8px 10px;padding:11px 12px;border:1px solid var(--border-color);border-radius:13px;background:var(--bg-secondary);color:var(--text-secondary)}.leaderboard-help-item.has-action{grid-template-columns:auto minmax(0,1fr) auto}.leaderboard-help-item p{margin:0;font-size:.9rem;line-height:1.35}.leaderboard-help-limit{color:var(--text-primary);font-size:.76rem;font-weight:800;white-space:nowrap}.leaderboard-help-activity-btn{flex:0 0 auto;min-height:38px;font-size:.82rem!important;line-height:1!important}.leaderboard-help-activity-btn.is-flashcards{width:44px;padding:7px 10px}.leaderboard-help-activity-btn.is-study-now{padding:9px 12px}.leaderboard-help-done-btn{width:100%;min-height:44px;border:0;border-radius:12px;background:var(--accent-primary);color:#fff;cursor:pointer;font:inherit;font-weight:850}.leaderboard-points{color:var(--text-secondary);font-size:.84rem;font-weight:800;white-space:nowrap}.leaderboard-message{grid-row:1 / -1;align-self:center;margin:0;color:var(--text-secondary);text-align:center}.leaderboard-message.is-loading{animation:leaderboard-loading-pulse .9s ease-in-out infinite alternate}@keyframes leaderboard-row-exit-right{to{opacity:0;transform:translate(125%)}}@keyframes leaderboard-row-exit-left{to{opacity:0;transform:translate(-125%)}}@keyframes leaderboard-row-enter-up{0%{opacity:0;transform:translateY(385px) scale(.94)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes leaderboard-award-row-enter-old{0%{opacity:0;transform:translateY(385px) scale(.94)}to{opacity:1;transform:translateY(var(--rank-climb-distance)) scale(1)}}@keyframes leaderboard-rank-climb{0%{transform:translateY(var(--rank-climb-distance)) scale(1)}14%{transform:translateY(var(--rank-climb-distance)) scale(1.06) rotate(-.5deg)}82%{transform:translateY(-7px) scale(1.045) rotate(.25deg)}to{transform:translateY(0) scale(1) rotate(0)}}@keyframes leaderboard-row-overtaken{0%,to{transform:translateY(0);filter:none}42%{transform:translateY(9px);filter:brightness(.88) saturate(.82)}}@keyframes leaderboard-blue-speed-lines{to{background-position:90px 0,0 18px}}@keyframes leaderboard-loading-pulse{to{opacity:.48}}@keyframes leaderboard-current-user-sheen{0%,54%{transform:skew(-18deg) translate(-220%)}to{transform:skew(-18deg) translate(760%)}}@keyframes leaderboard-shimmer{to{background-position:-220% 0}}@media(max-width:420px){.leaderboard-row{grid-template-columns:38px 27px minmax(0,1fr) minmax(58px,auto);gap:7px;padding-inline:8px}.leaderboard-points{max-width:74px;overflow:hidden;font-size:.72rem;text-overflow:ellipsis}}@media(prefers-reduced-motion:reduce){.leaderboard-fixed-list.is-exiting .leaderboard-row:not(.is-skeleton),.leaderboard-fixed-list.is-entering .leaderboard-row:not(.is-skeleton){animation-duration:.08s;animation-delay:0s}.leaderboard-row.is-current-user:after{animation:none;display:none}.leaderboard-fixed-list.is-entering .leaderboard-row.is-rank-climb-pending,.leaderboard-row.is-rank-climbing,.leaderboard-row.is-being-overtaken{animation-duration:.08s;animation-delay:0s}.leaderboard-row.is-rank-climbing:before{display:none}}.achievement-progress-card:hover{opacity:.86}.achievement-progress-card:active{opacity:.72}.achievement-progress-card:focus-visible{outline:3px solid color-mix(in srgb,var(--accent-primary) 34%,transparent);outline-offset:3px}.user-info-card .language-settings-card--embedded{margin-top:-4px}.delete-account-section{margin-top:auto;padding-top:8px;border-top:1px solid var(--border-color)}.delete-account-link{width:100%;border:0;background:transparent;color:#b91c1c;cursor:pointer;font:inherit;font-size:.9rem;font-weight:700;text-align:left;padding:4px 0}.delete-account-link:focus-visible{outline:3px solid rgba(185,28,28,.22);outline-offset:3px}.delete-account-modal-overlay{position:fixed;inset:0;z-index:12000;display:flex;align-items:center;justify-content:center;padding:18px;background:#00000094;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);opacity:0;transition:opacity .26s ease}.delete-account-modal-overlay.is-open{opacity:1}.delete-account-modal{width:min(440px,100%);overflow:hidden;border-radius:16px;background:var(--bg-primary);box-shadow:0 24px 70px #00000057;transform:translateY(12px) scale(.97);opacity:0;transition:transform .26s ease,opacity .26s ease}.delete-account-modal-overlay.is-open .delete-account-modal{transform:translateY(0) scale(1);opacity:1}.delete-account-modal-header{display:flex;justify-content:space-between;gap:18px;padding:22px 24px;border-bottom:1px solid var(--border-color);background:var(--bg-secondary)}.delete-account-modal-eyebrow{margin:0 0 5px;color:#b91c1c;font-size:.75rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase}.delete-account-modal-close{width:38px;height:38px;flex:0 0 38px;border:1px solid var(--border-color);border-radius:50%;background:var(--bg-secondary);color:var(--text-secondary);cursor:pointer;font-size:1.35rem;line-height:1}.delete-account-modal-body{padding:22px 24px 24px}.delete-account-modal h3{margin:0;color:var(--text-primary);font-size:1.35rem;line-height:1.15}.delete-account-modal-body p{margin:0 0 18px;color:var(--text-secondary);line-height:1.45}.delete-account-modal label{display:block;margin-bottom:8px;color:var(--text-primary);font-size:.85rem;font-weight:700}.delete-account-modal input{width:100%;min-height:44px;border:1px solid var(--border-color);border-radius:8px;background:var(--bg-secondary);color:var(--text-primary);font:inherit;padding:10px 12px}.username-modal-overlay{position:fixed;inset:0;z-index:12040;display:flex;align-items:center;justify-content:center;padding:18px;background:#00000094;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);opacity:0;transition:opacity .22s ease}.username-modal-overlay.is-open{opacity:1}.username-modal{width:min(460px,100%);border-radius:16px;overflow:hidden;background:var(--bg-primary);box-shadow:0 24px 70px #00000057;opacity:0;transform:translateY(12px) scale(.96);transition:opacity .26s cubic-bezier(.22,1,.36,1),transform .26s cubic-bezier(.22,1,.36,1)}.username-modal-overlay.is-open .username-modal{opacity:1;transform:translateY(0) scale(1)}.username-modal-header{display:flex;justify-content:space-between;gap:18px;padding:22px 24px;border-bottom:1px solid var(--border-color);background:var(--bg-secondary)}.username-modal-eyebrow{margin:0 0 5px;color:var(--accent-primary);font-size:.75rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase}.username-modal h3{margin:0;color:var(--text-primary);font-size:1.35rem;line-height:1.15}.username-modal-close{width:38px;height:38px;flex:0 0 38px;border:1px solid var(--border-color);border-radius:50%;background:var(--bg-secondary);color:var(--text-secondary);cursor:pointer;font-size:1.35rem;line-height:1}.username-modal-body{padding:22px 24px 24px}.username-modal-body p{margin:0 0 14px;color:var(--text-secondary);line-height:1.5}.username-modal label{display:block;font-size:.82rem;font-weight:700;color:var(--text-secondary);margin-bottom:8px;letter-spacing:.02em}.username-modal input{width:100%;border-radius:12px;border:1px solid var(--border-color);background:var(--bg-secondary);color:var(--text-primary);padding:11px 12px;font:inherit;margin-bottom:12px}.username-modal input:focus{outline:none;border-color:color-mix(in srgb,var(--accent-primary) 55%,var(--border-color));box-shadow:0 0 0 3px color-mix(in srgb,var(--accent-primary) 20%,transparent)}.username-modal-error{margin:0 0 10px;color:#b42318;font-size:.85rem;font-weight:600}.username-modal-actions{margin-top:16px;display:flex;justify-content:flex-end;gap:10px}.username-modal-cancel,.username-modal-confirm{border:0;border-radius:10px;padding:10px 14px;font:inherit;font-weight:700;cursor:pointer}.username-modal-cancel{background:var(--bg-secondary);color:var(--text-secondary)}.username-modal-confirm{background:var(--accent-primary);color:#fff}.username-modal input:disabled,.username-modal-close:disabled,.username-modal-cancel:disabled,.username-modal-confirm:disabled{opacity:.6;cursor:not-allowed}.delete-account-error{margin:10px 0 0!important;color:#b91c1c!important;font-size:.86rem;font-weight:600}.delete-account-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:20px}.delete-account-actions button{min-height:42px;border-radius:8px;cursor:pointer;font:inherit;font-weight:700;padding:9px 14px}.delete-account-cancel{border:1px solid var(--border-color);background:var(--bg-secondary);color:var(--text-primary)}.delete-account-confirm{border:1px solid #b91c1c;background:#b91c1c;color:#fff}.delete-account-actions button:disabled,.delete-account-modal input:disabled,.delete-account-modal-close:disabled{opacity:.65;cursor:default}.progress-header{display:flex;justify-content:space-between;margin-bottom:8px;font-size:.9rem;color:var(--text-secondary)}.progress-title{color:var(--accent-primary);font-weight:600}.progress-bar-container{height:8px;background-color:var(--bg-primary);border-radius:4px;overflow:hidden}.progress-bar-fill{height:100%;background-color:var(--accent-primary);border-radius:4px;transition:width .5s ease-out}.achievement-progress-fill{background:var(--accent-primary)}.achievements-modal-overlay{position:fixed;inset:0;z-index:10000;display:flex;align-items:center;justify-content:center;padding:18px;background:#00000094;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);opacity:0;pointer-events:none;transition:opacity .22s ease}.achievements-modal-overlay.is-open{opacity:1;pointer-events:auto}.achievements-modal-overlay:not(.is-open){pointer-events:none}.achievements-modal{width:min(620px,100%);max-height:min(760px,88vh);display:flex;flex-direction:column;overflow:hidden;border-radius:22px;background:var(--bg-primary);box-shadow:0 24px 70px #00000057;opacity:0;transform:translateY(12px) scale(.97);transition:opacity .24s ease,transform .24s ease}.achievements-modal-overlay.is-open .achievements-modal{opacity:1;transform:translateY(0) scale(1)}.achievements-modal-header{display:flex;justify-content:space-between;gap:18px;padding:22px 24px;border-bottom:1px solid var(--border-color);background:var(--bg-secondary)}.achievements-modal-header h3{margin:2px 0 6px;color:var(--text-primary);font-size:1.45rem;line-height:1.1}.achievements-modal-header p{margin:0;color:var(--text-secondary);font-weight:600}.achievements-eyebrow{color:var(--accent-primary)!important;font-size:.75rem;text-transform:uppercase;letter-spacing:.12em}.achievements-close-btn{width:38px;height:38px;flex:0 0 38px;border:1px solid var(--border-color);border-radius:50%;background:var(--bg-secondary);color:var(--text-secondary);cursor:pointer;font-size:1.35rem;line-height:1;transition:transform .2s ease,color .2s ease,border-color .2s ease}.achievements-close-btn:hover{color:var(--text-primary);border-color:var(--accent-primary);transform:rotate(90deg)}.achievements-list{display:flex;flex-direction:column;gap:0;padding:0 24px 12px;overflow-y:auto;overscroll-behavior:contain}.achievement-row{display:flex;align-items:center;gap:16px;width:100%;padding:16px 0;border:0;border-bottom:1px solid var(--border-color);background:transparent;color:inherit;cursor:pointer;font:inherit;text-align:left;transition:transform .2s ease,opacity .2s ease,filter .2s ease}.achievement-row:hover{transform:translate(2px)}.achievement-row:focus-visible{outline:3px solid color-mix(in srgb,var(--accent-primary) 34%,transparent);outline-offset:3px}.achievement-row:last-child{border-bottom:none}.achievement-row.is-unlocked{border-color:var(--border-color)}.achievement-row.is-locked{opacity:.58;filter:grayscale(1)}.achievement-row.is-preview-blurred{opacity:.42;filter:grayscale(1) blur(5px)}.achievement-row.is-preview-blurred .achievement-copy h4,.achievement-row.is-preview-blurred .achievement-progress-text{color:transparent;text-shadow:0 0 12px color-mix(in srgb,var(--text-secondary) 75%,transparent);-webkit-user-select:none;user-select:none}.achievement-art{width:54px;height:54px;flex:0 0 54px;display:flex;align-items:center;justify-content:center}.achievement-icon{width:54px;height:54px;display:block}.achievement-icon-disc{fill:var(--accent-primary)}.achievement-icon-inner{fill:color-mix(in srgb,var(--accent-primary) 14%,var(--bg-primary) 86%)}.achievement-icon-book{fill:var(--bg-primary);stroke:color-mix(in srgb,var(--accent-primary) 68%,var(--text-primary) 32%);stroke-linejoin:round;stroke-width:2}.achievement-icon-book-line{fill:none;stroke:color-mix(in srgb,var(--accent-primary) 56%,var(--text-primary) 44%);stroke-linecap:round;stroke-linejoin:round;stroke-width:1.6}.achievement-icon-spine{fill:none;stroke:color-mix(in srgb,var(--accent-primary) 78%,var(--text-primary) 22%);stroke-linecap:round;stroke-linejoin:round;stroke-width:2.4}.achievement-icon-trophy-cup{fill:#f7c948;stroke:color-mix(in srgb,#f7c948 56%,#8a6a00 44%);stroke-linejoin:round;stroke-width:1.8}.achievement-icon-trophy-handle,.achievement-icon-trophy-stem{fill:none;stroke:color-mix(in srgb,#f7c948 56%,#8a6a00 44%);stroke-linecap:round;stroke-linejoin:round;stroke-width:1.9}.achievement-icon-lock{fill:color-mix(in srgb,var(--text-secondary) 72%,var(--bg-primary) 28%)}.achievement-row.is-locked .achievement-icon-disc,.achievement-icon--unlocking .achievement-icon-disc{fill:color-mix(in srgb,var(--text-secondary) 42%,var(--bg-primary) 58%)}.achievement-row.is-locked .achievement-icon-inner,.achievement-icon--unlocking .achievement-icon-inner{fill:color-mix(in srgb,var(--text-secondary) 14%,var(--bg-primary) 86%)}.achievement-row.is-locked .achievement-icon-book,.achievement-icon--unlocking .achievement-icon-book{fill:color-mix(in srgb,var(--text-secondary) 10%,var(--bg-primary) 90%);stroke:color-mix(in srgb,var(--text-secondary) 46%,var(--bg-primary) 54%)}.achievement-row.is-locked .achievement-icon-book-line,.achievement-icon--unlocking .achievement-icon-book-line,.achievement-row.is-locked .achievement-icon-spine,.achievement-icon--unlocking .achievement-icon-spine{stroke:color-mix(in srgb,var(--text-secondary) 50%,var(--bg-primary) 50%)}.achievement-row.is-locked .achievement-icon-trophy-cup,.achievement-icon--unlocking .achievement-icon-trophy-cup{fill:color-mix(in srgb,var(--text-secondary) 24%,var(--bg-primary) 76%);stroke:color-mix(in srgb,var(--text-secondary) 48%,var(--bg-primary) 52%)}.achievement-row.is-locked .achievement-icon-trophy-handle,.achievement-row.is-locked .achievement-icon-trophy-stem,.achievement-icon--unlocking .achievement-icon-trophy-handle,.achievement-icon--unlocking .achievement-icon-trophy-stem{stroke:color-mix(in srgb,var(--text-secondary) 48%,var(--bg-primary) 52%)}.achievement-copy{min-width:0;flex:1 1 auto;width:100%}.achievement-copy-header{display:flex;align-items:baseline;justify-content:space-between;gap:10px}.achievement-copy h4{margin:0;color:var(--text-primary);font-size:.98rem;flex:1 1 auto;min-width:0}.achievement-progress-text{margin:0 0 0 auto;text-align:right;color:var(--accent-primary)!important;font-size:.78rem;font-weight:700;letter-spacing:.02em;white-space:nowrap;flex:0 0 auto}.achievement-copy p{margin:0}.achievement-unlock-overlay{position:fixed;inset:0;z-index:2147483646;display:flex;align-items:center;justify-content:center;padding:20px;overflow:hidden;background:#000000a8;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);animation:achievement-unlock-overlay-in .2s ease-out both}.achievement-unlock-overlay.is-closing{animation:achievement-unlock-overlay-out .26s ease-in both;pointer-events:none}.achievement-unlock-modal{position:relative;z-index:2;width:min(430px,100%);padding:30px 26px 24px;border:1px solid var(--border-color);border-radius:24px;background:var(--bg-primary);box-shadow:0 28px 80px #00000061;text-align:center;animation:achievement-unlock-card-in .34s cubic-bezier(.2,.85,.2,1) both}.achievement-unlock-overlay.is-closing .achievement-unlock-modal{animation:achievement-unlock-card-out .26s ease-in both}.achievement-unlock-overlay.is-closing .achievement-confetti-piece{animation-play-state:paused}.achievement-unlock-kicker{margin:0 0 18px;color:var(--accent-primary);font-size:.78rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase}.achievement-unlock-icon-wrap{width:116px;height:116px;display:flex;align-items:center;justify-content:center;margin:0 auto 18px}.achievement-unlock-icon-wrap .achievement-icon{width:112px;height:112px}.achievement-icon--unlocking{animation:achievement-icon-unlock-spin 1.7s ease-in-out both;filter:drop-shadow(0 10px 18px rgba(0,0,0,.2))}.achievement-icon--unlocking .achievement-icon-disc{animation:achievement-disc-color-in 1.7s ease-in-out both}.achievement-icon--unlocking .achievement-icon-inner{animation:achievement-inner-color-in 1.7s ease-in-out both}.achievement-icon--unlocking .achievement-icon-book{animation:achievement-book-color-in 1.7s ease-in-out both}.achievement-icon--unlocking .achievement-icon-book-line{animation:achievement-book-line-color-in 1.7s ease-in-out both}.achievement-icon--unlocking .achievement-icon-spine{animation:achievement-stroke-color-in 1.7s ease-in-out both}.achievement-icon--unlocking .achievement-icon-trophy-cup{animation:achievement-trophy-cup-color-in 1.7s ease-in-out both}.achievement-icon--unlocking .achievement-icon-trophy-handle,.achievement-icon--unlocking .achievement-icon-trophy-stem{animation:achievement-trophy-stroke-color-in 1.7s ease-in-out both}.achievement-icon--unlocking .achievement-icon-lock{animation:achievement-lock-fade-out 1.1s ease-in-out .45s both}.achievement-unlock-modal h3{margin:0 0 8px;color:var(--text-primary);font-size:1.35rem;line-height:1.15}.achievement-unlock-modal>p:last-of-type{margin:0;color:var(--text-secondary);line-height:1.45}.achievement-unlock-close{margin-top:22px;padding:10px 22px;border:1px solid var(--accent-primary);border-radius:999px;background:var(--accent-primary);color:#fff;cursor:pointer;font-weight:700;transition:opacity .2s ease,transform .2s ease}.achievement-unlock-close:hover{opacity:.9;transform:translateY(-1px)}.achievement-confetti-field{position:absolute;inset:0;pointer-events:none;overflow:hidden}.achievement-confetti-piece{position:absolute;left:var(--confetti-left);top:var(--confetti-top);width:9px;height:16px;border-radius:2px;background:var(--confetti-color);opacity:0;transform:translate(-50%,-50%) scale(.2) rotate(0);animation:achievement-confetti-pop 1.45s cubic-bezier(.18,.78,.22,1) var(--confetti-delay) infinite}.achievement-confetti-piece:nth-child(3n){width:10px;height:10px;border-radius:50%}.achievement-confetti-piece:nth-child(4n){width:14px;height:6px}@keyframes achievement-unlock-card-in{0%{opacity:0;transform:translateY(18px) scale(.96)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes achievement-unlock-overlay-in{0%{opacity:0}to{opacity:1}}@keyframes achievement-unlock-overlay-out{0%{opacity:1}to{opacity:0}}@keyframes achievement-unlock-card-out{0%{opacity:1;transform:translateY(0) scale(1)}to{opacity:0;transform:translateY(12px) scale(.97)}}@keyframes achievement-icon-unlock-spin{0%{transform:rotateY(0) scale(.9)}65%{transform:rotateY(540deg) scale(1.05)}to{transform:rotateY(720deg) scale(1)}}@keyframes achievement-disc-color-in{0%,42%{fill:color-mix(in srgb,var(--text-secondary) 42%,var(--bg-primary) 58%)}to{fill:var(--accent-primary)}}@keyframes achievement-inner-color-in{0%,42%{fill:color-mix(in srgb,var(--text-secondary) 14%,var(--bg-primary) 86%)}to{fill:color-mix(in srgb,var(--accent-primary) 14%,var(--bg-primary) 86%)}}@keyframes achievement-book-color-in{0%,42%{fill:color-mix(in srgb,var(--text-secondary) 10%,var(--bg-primary) 90%);stroke:color-mix(in srgb,var(--text-secondary) 46%,var(--bg-primary) 54%)}to{fill:var(--bg-primary);stroke:color-mix(in srgb,var(--accent-primary) 68%,var(--text-primary) 32%)}}@keyframes achievement-book-line-color-in{0%,42%{stroke:color-mix(in srgb,var(--text-secondary) 50%,var(--bg-primary) 50%)}to{stroke:color-mix(in srgb,var(--accent-primary) 56%,var(--text-primary) 44%)}}@keyframes achievement-stroke-color-in{0%,42%{stroke:color-mix(in srgb,var(--text-secondary) 50%,var(--bg-primary) 50%)}to{stroke:color-mix(in srgb,var(--accent-primary) 78%,var(--text-primary) 22%)}}@keyframes achievement-trophy-cup-color-in{0%,42%{fill:color-mix(in srgb,var(--text-secondary) 24%,var(--bg-primary) 76%);stroke:color-mix(in srgb,var(--text-secondary) 48%,var(--bg-primary) 52%)}to{fill:#f7c948;stroke:color-mix(in srgb,#f7c948 56%,#8a6a00 44%)}}@keyframes achievement-trophy-stroke-color-in{0%,42%{stroke:color-mix(in srgb,var(--text-secondary) 48%,var(--bg-primary) 52%)}to{stroke:color-mix(in srgb,#f7c948 56%,#8a6a00 44%)}}@keyframes achievement-lock-fade-out{0%,35%{opacity:1;transform:scale(1)}to{opacity:0;transform:scale(.74)}}@keyframes achievement-confetti-pop{0%{opacity:0;transform:translate(-50%,-50%) scale(.2) rotate(0)}15%{opacity:1}72%{opacity:1;transform:translate(calc(-50% + var(--confetti-x)),calc(-50% + var(--confetti-y))) scale(1) rotate(var(--confetti-rotation))}to{opacity:0;transform:translate(calc(-50% + var(--confetti-x)),calc(-50% + 120px)) scale(.8) rotate(calc(var(--confetti-rotation) + 180deg))}}.section-title{font-size:1.25rem;font-weight:700;color:var(--text-primary);margin:0 0 16px}.level-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px}.level-card{background-color:var(--bg-secondary);border-radius:16px;padding:20px;box-shadow:var(--card-shadow);transition:all .3s cubic-bezier(.25,.8,.25,1);border:1px solid transparent;display:flex;flex-direction:column;gap:16px;cursor:default}.level-card.active{border-color:var(--border-color)}.level-card.inactive{opacity:.6;filter:grayscale(.8);background-color:var(--bg-primary)}.level-card-header{display:flex;justify-content:space-between;align-items:center}.level-info{display:flex;align-items:center;gap:12px}.level-badge{background-color:var(--bg-primary);color:var(--text-primary);font-weight:800;padding:6px 10px;border-radius:8px;font-size:.9rem}.level-card.active .level-badge{background-color:var(--accent-primary);color:#fff}.level-name{font-weight:600;color:var(--text-primary);font-size:1rem}.level-controls{display:flex;align-items:center;gap:12px}.level-controls-column{display:flex;flex-direction:column;align-items:center;gap:6px;width:44px;flex:0 0 44px}.level-stats-slot{min-height:12px;display:flex;align-items:center;justify-content:center;width:44px;flex:0 0 44px;text-align:center}.switch{position:relative;display:inline-block;width:44px;height:24px}.switch input{opacity:0;width:0;height:0}.slider{position:absolute;cursor:pointer;inset:0;background-color:#ccc;transition:.4s;border-radius:24px}.slider:before{position:absolute;content:"";height:18px;width:18px;left:3px;bottom:3px;background-color:#fff;transition:.4s;border-radius:50%;box-shadow:0 2px 4px #0003}input:checked+.slider{background-color:var(--accent-primary)}input:checked+.slider:before{transform:translate(20px)}.level-mini-progress{display:flex;align-items:center;gap:12px}.mini-bar-container{flex:1;height:6px;background-color:var(--bg-primary);border-radius:3px;overflow:hidden;width:100%}.mini-bar-fill{height:100%;background-color:var(--accent-primary);border-radius:3px;transition:width .5s ease-out}.mini-bar-fill.is-resetting{transition:none}.mini-stats-text{font-size:.75rem;color:var(--text-secondary);font-weight:600;line-height:1;text-align:center;white-space:nowrap;display:block;width:100%}.mini-stats-text--small{font-size:.68rem}.mini-stats-skeleton{display:inline-block;width:36px;height:12px;border-radius:999px;background:linear-gradient(90deg,var(--bg-primary) 0%,rgba(255,255,255,.35) 50%,var(--bg-primary) 100%);background-size:200% 100%;animation:dashboard-shimmer 1.3s linear infinite}@keyframes dashboard-shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}@keyframes fly-in{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.fly-in{animation:fly-in .6s cubic-bezier(.2,.8,.2,1) forwards}.prepare-animation{opacity:0}@media(max-width:600px){.level-grid{grid-template-columns:1fr}}@media(max-width:375px){.dashboard-container{gap:20px}.dashboard-card,.level-card{padding:16px}.user-info-card{gap:18px}.level-grid{gap:16px}.level-card-header{gap:10px}.level-info{min-width:0;gap:10px}.level-name{min-width:0;overflow-wrap:anywhere}.achievements-modal-header{padding:18px}.achievements-list{padding:14px}.achievement-row{align-items:flex-start;gap:12px;padding:12px}.achievement-art,.achievement-icon{width:46px;height:46px;flex-basis:46px}}.skeleton{background-color:#e0e0e0;position:relative;overflow:hidden;border-radius:4px}.skeleton:after{content:"";position:absolute;top:0;left:-150%;width:150%;height:100%;background:linear-gradient(to right,transparent 0%,rgba(255,255,255,.4) 50%,transparent 100%);animation:shimmer 1.5s infinite}.user-name-skeleton{height:28px;width:150px;margin-bottom:5px}.user-role-skeleton{height:18px;width:100px}[data-theme=dark] .skeleton{background-color:#333}[data-theme=dark] .skeleton:after{background:linear-gradient(to right,transparent 0%,rgba(255,255,255,.1) 50%,transparent 100%)}.skeleton-vocab-card .skeleton,.skeleton-vocab-card .skeleton-line{background-color:#e0e0e0;position:relative;overflow:hidden;border-radius:4px}.skeleton-vocab-card .skeleton:after,.skeleton-vocab-card .skeleton-line:after{content:"";position:absolute;top:0;left:-150%;width:150%;height:100%;background:linear-gradient(to right,transparent 0%,#f0f0f0 50%,transparent 100%);animation:shimmer 1.5s infinite}@keyframes shimmer{0%{transform:translate(-100%)}to{transform:translate(100%)}}.skeleton-line{height:16px;display:block}.flashcards-deck-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#0000004d;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);z-index:10000;display:flex;flex-direction:column;opacity:0;pointer-events:none;transition:opacity .3s ease}.flashcards-deck-overlay.active{opacity:1;pointer-events:all}.flashcards-deck-top-bar{width:100%;padding:20px;display:flex;justify-content:flex-end;z-index:10}.flashcards-deck-close-btn{background:#fff3;border:none;color:#fff;font-size:28px;width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer}.flashcards-deck-card-container{flex:1;display:flex;align-items:center;justify-content:center;perspective:1200px;padding:0 20px;position:relative}.flashcards-deck-fly-wrapper{width:100%;max-width:340px;height:65vh;max-height:450px;will-change:transform;transition:none;transform-style:preserve-3d}.flashcards-deck-fly-wrapper.is-hidden{visibility:hidden;pointer-events:none}.flashcards-deck-fly-wrapper.animate-in{animation:flashcardDeckEnter .42s cubic-bezier(.22,.9,.3,1) both}@keyframes flashcardDeckEnter{0%{opacity:0;transform:translateY(14px) scale(.96)}to{opacity:1;transform:translateY(0) scale(1)}}.flashcards-deck-flashcard{width:100%;height:100%;position:relative;transform-style:preserve-3d;cursor:grab;touch-action:none}.flashcards-deck-flashcard:active{cursor:grabbing}.flashcards-deck-card-face{position:absolute;width:100%;height:100%;backface-visibility:hidden;-webkit-backface-visibility:hidden;background:#fff;border-radius:20px;box-shadow:0 15px 35px #00000026;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:30px;text-align:center;overflow:hidden}.flashcards-deck-card-front{transform:rotateY(0) translateZ(1px)}.flashcards-deck-card-back{transform:rotateY(180deg) translateZ(1px);background-color:#e2e8f0}.flashcards-deck-explosion{position:absolute;top:50%;left:50%;width:800px;height:800px;border-radius:50%;background-color:transparent;transform:translate(-50%,-50%) scale(0);transition:transform .4s cubic-bezier(.4,0,.2,1);z-index:1;pointer-events:none}.flashcards-deck-flashcard.is-correct .flashcards-deck-explosion{background-color:#22c55e;transform:translate(-50%,-50%) scale(1)}.flashcards-deck-flashcard.is-incorrect .flashcards-deck-explosion{background-color:#ef4444;transform:translate(-50%,-50%) scale(1)}.flashcards-deck-card-content{position:relative;z-index:2;transition:color .2s ease}.flashcards-deck-audio-btn{position:absolute;inset:auto auto 14px 50%;transform:translate(-50%);z-index:4;width:58px;height:58px;border:1.5px solid rgba(49,27,146,.2);border-radius:50%;color:var(--accent-primary);background:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:none}.flashcards-deck-audio-btn.is-playing{background:#fff;border-color:var(--accent-primary)}.flashcards-deck-audio-btn:disabled{opacity:.92;cursor:not-allowed}.flashcards-deck-audio-btn:hover:not(:disabled){border-color:var(--accent-primary);background:#fff}.flashcards-deck-audio-btn svg{width:44px;height:44px;fill:none;stroke:currentColor;stroke-width:1.35;stroke-linecap:round;stroke-linejoin:round}.flashcards-audio-activity{width:40px;height:24px;position:relative;display:inline-flex;align-items:center;justify-content:center}.flashcards-audio-activity .wave{position:absolute;left:3px;right:3px;top:50%;transform:translateY(-50%);height:18px;display:inline-flex;align-items:center;justify-content:center;gap:2px}.flashcards-audio-activity .wave span{width:4px;height:2px;border-radius:999px;background:var(--accent-primary);animation:flashcardsAudioWave .9s ease-in-out infinite}.flashcards-audio-activity .wave span:nth-child(2){animation-delay:.12s}.flashcards-audio-activity .wave span:nth-child(3){animation-delay:.24s}.flashcards-audio-activity .wave span:nth-child(4){animation-delay:.36s}@keyframes flashcardsAudioWave{0%,to{height:2px}50%{height:16px}}.flashcards-deck-flashcard.skip-color-transition .flashcards-deck-explosion{transition:none!important}.flashcards-deck-card-front h2{font-size:36px;font-weight:700;color:#1f2937;margin:0;transition:color .2s ease}.flashcards-deck-card-front .flashcards-deck-card-content{width:100%}.flashcards-deck-card-front .flashcards-deck-card-content.no-front-example{display:flex;align-items:center;justify-content:center;min-height:100%}.flashcards-deck-card-front .flashcards-deck-card-content.has-front-example{display:flex;flex-direction:column;align-items:center;justify-content:center}.flashcards-front-example{margin-top:10px;font-size:16px;line-height:1.45;color:#374151;max-width:260px}.flashcards-front-example-highlight{color:var(--accent-primary);font-weight:700}.flashcards-deck-card-back h3{font-size:28px;color:var(--accent-primary);margin-bottom:16px;transition:color .2s ease}.flashcards-translation-slot{width:100%;min-height:34px;display:flex;align-items:center;justify-content:center}.flashcards-translation-slot.is-loading{color:transparent}.flashcards-deck-card-back p{font-size:18px;color:#4b5563;line-height:1.5;transition:color .2s ease}.flashcards-shimmer-loader{display:inline-block;width:min(70%,240px);height:34px;border-radius:8px;margin:0;background:linear-gradient(90deg,#e5e7eb 25%,#f3f4f6,#e5e7eb 75%);background-size:200% 100%;animation:flashcardsShimmer 1.1s linear infinite}@keyframes flashcardsShimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.flashcards-deck-flashcard.is-correct .flashcards-deck-card-content *,.flashcards-deck-flashcard.is-incorrect .flashcards-deck-card-content *{color:#fff!important}.flashcards-deck-controls{padding:30px 20px 50px;display:flex;justify-content:center;align-items:center;gap:24px;z-index:10}.flashcards-deck-action-btn{width:64px;height:64px;border-radius:50%;border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 4px 10px #00000026;transition:transform .1s,filter .2s ease}.flashcards-deck-action-btn:active{transform:scale(.9)}.flashcards-deck-action-btn:disabled{filter:grayscale(.7);opacity:.5;cursor:not-allowed}.flashcards-deck-btn-cross{background-color:#ef4444}.flashcards-deck-btn-tick{background-color:#22c55e}.flashcards-deck-btn-plus{background:color-mix(in srgb,var(--accent-primary) 12%,white);border:2px solid var(--accent-primary);color:var(--accent-primary);box-shadow:0 4px 10px #0000001f;position:relative}.flashcards-deck-btn-plus .wordlist-icon{position:absolute;width:28px;height:28px;opacity:0;transform:scale(.82);transition:opacity .22s ease,transform .22s ease}.flashcards-deck-btn-plus .wordlist-icon path,.flashcards-deck-btn-plus .wordlist-icon circle{stroke:currentColor;stroke-width:2.2}.flashcards-deck-btn-plus.state-plus .plus-icon,.flashcards-deck-btn-plus.state-loading .loading-icon,.flashcards-deck-btn-plus.state-added .tick-icon,.flashcards-deck-btn-plus.state-error .error-icon{opacity:1;transform:scale(1)}.flashcards-deck-btn-plus.state-added{color:var(--accent-primary);border-color:var(--accent-primary);background:color-mix(in srgb,var(--accent-primary) 12%,white)}.flashcards-deck-btn-plus.state-loading .loading-icon{animation:tooltip-wordlist-spin 1s linear infinite}.flashcards-deck-btn-plus.state-loading .loading-icon circle{stroke-dasharray:44 100;stroke-dashoffset:8}.flashcards-deck-action-btn svg{width:32px;height:32px;stroke:#fff;stroke-width:3;stroke-linecap:round;stroke-linejoin:round;fill:none}.flashcards-deck-prompt{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;text-align:center;padding:20px;z-index:20;color:#fff;background:#00000073;border-radius:16px}.flashcards-deck-prompt h3{margin:0;font-size:1.6rem}.flashcards-deck-prompt p{margin:0;font-size:1rem;opacity:.9}.flashcards-deck-prompt-btn{background:#22c55e;color:#fff;border:none;border-radius:10px;padding:12px 20px;font-size:1rem;font-weight:700;cursor:pointer}.flashcards-deck-prompt-btn.secondary{background:#ffffff38}.flashcards-deck-inline-actions{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);display:flex;gap:10px;z-index:25}.flashcards-deck-inline-actions .flashcards-deck-prompt-btn{padding:14px 24px;font-size:1.05rem;font-weight:800;border-radius:12px}.quiz-article-container{margin-bottom:2.5em;padding:8px 0 28px;background-color:transparent;max-width:100%;overflow-x:clip;margin-left:auto;margin-right:auto}.article-title{margin-top:0;margin-bottom:.75em;font-size:1.9em;font-weight:600;color:var(--text-primary);line-height:1.3;text-align:center;padding:0 24px .75em;box-sizing:border-box;position:relative}.article-title:after{content:"";position:absolute;left:24px;right:24px;bottom:0;height:2px;background:var(--accent-primary, #800080)}.article-banner{width:auto;height:clamp(230px,32vw,360px);margin:.5em 24px 2.4em;border-radius:0;box-shadow:none;display:block;position:relative;overflow:hidden}.article-banner img{display:block;width:100%;height:100%;object-fit:cover;margin:0;border-radius:0}.article-audio-player{width:auto;margin:0 24px 14px}.article-audio-player-reveal{max-height:0;opacity:0;overflow:hidden;transition:max-height .52s cubic-bezier(.22,.9,.24,1),opacity .36s ease;position:relative}.article-audio-player-reveal.is-visible{max-height:110px;opacity:1}.article-audio-player-reveal.is-visible .dre-audio-player{animation:dre-audio-pop-in .78s cubic-bezier(.2,.86,.2,1)}.article-audio-tap-coachmark{position:fixed;width:62px;height:62px;margin-left:-31px;margin-top:-31px;z-index:10050;pointer-events:none;animation:tap-coachmark-flytap 1.2s ease-out both}.article-audio-tap-coachmark-hand{position:absolute;left:12px;top:6px;width:38px;height:46px;display:inline-flex;align-items:center;justify-content:center;animation:tap-hand-press 1.2s ease-in-out 1}.article-audio-tap-coachmark-hand svg{width:100%;height:100%;fill:#fff;stroke:var(--accent-primary);stroke-width:1.35;stroke-linejoin:round;stroke-linecap:round;filter:drop-shadow(0 6px 12px rgba(0,0,0,.35))}.article-audio-tap-coachmark-crease{fill:none;stroke:#11182738;stroke-width:1.2;stroke-linecap:round}.article-audio-tap-coachmark-ripple{position:absolute;inset:0;border:2px solid rgba(255,255,255,.92);border-radius:999px;animation:tap-ripple 1.2s ease-out 1}.dre-audio-player{--primary-accent: var(--accent-primary, #800080);--secondary-accent: color-mix(in srgb, var(--accent-primary, #800080) 84%, black);--light-purple-bg: color-mix(in srgb, var(--accent-primary, #800080) 12%, var(--bg-secondary, #ffffff));--playing-control-bg: color-mix(in srgb, var(--accent-primary, #800080) 12%, #ffffff);--text-color-light-bg: var(--text-primary, #333);--text-color-dark-bg: #fff;--icon-color-light-bg: var(--primary-accent);--icon-color-dark-bg: #fff;display:flex;align-items:center;background-color:var(--light-purple-bg);border-radius:25px;padding:4px 10px;width:100%;box-sizing:border-box;max-width:350px;margin-left:auto;margin-right:20px;transition:background-color .3s ease}.dre-audio-player.is-playing{background-color:var(--primary-accent)}.dre-play-pause-btn{background-color:var(--primary-accent);border:none;border-radius:50%;width:28px;height:28px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:background-color .3s ease;margin-right:10px;flex-shrink:0}.dre-play-icon,.dre-pause-icon{display:inline-flex;align-items:center;justify-content:center;width:16px;height:16px;line-height:0}.dre-play-loading-spinner{position:absolute;width:14px;height:14px;border-radius:50%;border:2px solid #fff;border-right-color:transparent;opacity:0;pointer-events:none}.dre-play-loading-spinner.is-visible{opacity:1;animation:dre-spin .8s linear infinite}.dre-seek-btn{background-color:transparent;border:none;width:24px;height:24px;padding:0;margin-right:6px;display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0}.dre-seek-forward-btn{margin-right:8px}.dre-seek-btn svg{width:22px;height:22px;fill:var(--icon-color-light-bg)}.dre-seek-btn svg text{font-size:9px;font-weight:700;fill:var(--icon-color-light-bg);font-family:Arial,sans-serif}.dre-audio-player.is-playing .dre-seek-btn svg{fill:var(--icon-color-dark-bg)}.dre-audio-player.is-playing .dre-seek-btn svg text{fill:var(--icon-color-dark-bg)}.dre-audio-player.is-playing .dre-play-pause-btn{background-color:var(--playing-control-bg)}.dre-play-pause-btn:hover{background-color:var(--secondary-accent)}.dre-audio-player.is-playing .dre-play-pause-btn:hover{background-color:#eee}.dre-play-pause-btn svg{width:100%;height:100%;display:block;color:#fff;fill:currentColor}.dre-play-pause-btn svg path{fill:currentColor}.dre-play-pause-btn.is-loading,.dre-play-pause-btn.is-loading:hover{background-color:#8f929a}.dre-audio-player.is-playing .dre-play-pause-btn svg{color:var(--primary-accent)}@keyframes dre-spin{to{transform:rotate(360deg)}}@keyframes dre-audio-pop-in{0%{transform:scale(.86)}44%{transform:scale(1.09)}72%{transform:scale(.96)}to{transform:scale(1)}}.dre-progress-container{flex-grow:1;height:8px;background-color:#0000001a;border-radius:4px;cursor:pointer;margin:0 10px}.dre-progress-bar{height:100%;width:0%;background-color:var(--primary-accent);border-radius:5px}.dre-audio-player.is-playing .dre-progress-bar{background-color:#fff}.dre-timestamp,.dre-speed-btn{color:var(--text-color-light-bg);transition:color .3s ease;font-size:.85rem;flex-shrink:0}.dre-timestamp{width:3.4em;text-align:right;font-variant-numeric:tabular-nums}.dre-audio-player.is-playing .dre-timestamp,.dre-audio-player.is-playing .dre-speed-btn{color:var(--text-color-dark-bg)}.dre-speed-btn{background-color:transparent;border:1px solid var(--icon-color-light-bg);border-radius:5px;width:52px;min-width:52px;text-align:center;padding:2px 4px;cursor:pointer;font-size:.75rem;margin:0 10px;transition:color .3s ease,border-color .3s ease}.dre-audio-player.is-playing .dre-speed-btn{border-color:var(--icon-color-dark-bg)}.dre-volume-container{position:relative;display:flex;align-items:center}.dre-volume-btn{background-color:transparent;border:none;cursor:pointer;padding:0}.dre-volume-btn svg{width:22px;height:22px;color:var(--icon-color-light-bg);fill:currentColor;transition:color .3s ease}.dre-audio-player.is-playing .dre-volume-btn svg{color:var(--icon-color-dark-bg)}.dre-audio-player.is-muted .dre-volume-btn svg{color:#9e9e9e}.dre-volume-btn svg path{fill:currentColor}#dre-original-audio-player-container{position:relative;height:50px}.dre-sticky-player{position:fixed;top:100px;right:20px;z-index:1001;max-width:350px;width:100%;opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease}.dre-sticky-player.visible{opacity:1;visibility:visible}.dre-close-sticky-player-btn{background:transparent;border:none;color:var(--text-color-light-bg);cursor:pointer;font-size:20px;line-height:1;margin-left:10px;opacity:.7;padding:0;display:none}.dre-audio-player:not(.is-playing) .dre-close-sticky-player-btn{display:block}.dre-close-sticky-player-btn:hover{opacity:1}.dre-audio-player.is-playing .dre-close-sticky-player-btn{color:var(--text-color-dark-bg)}.article-header-overlay{position:relative;width:100%;height:250px;margin-bottom:24px;border-radius:12px;overflow:hidden;box-shadow:0 4px 12px #00000026;display:flex;justify-content:center;align-items:center;text-align:center}.article-header-overlay img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:transform .5s ease;z-index:0}.article-header-overlay:hover img{transform:scale(1.02)}.header-overlay-gradient{position:absolute;top:0;left:0;width:100%;height:100%;background:#00000059;z-index:1;pointer-events:none}.article-header-overlay .article-title-overlay{position:relative;z-index:2;color:#fff;font-size:2rem;font-weight:700;text-shadow:0 2px 10px rgba(0,0,0,.5);margin:0;padding:20px;width:100%;line-height:1.2}.article-content{display:grid;gap:2.8rem;overflow-x:clip}.article-paragraph-block{margin-bottom:0;display:flow-root}.section-heading{width:100%;max-width:760px;margin:0 auto .9em;padding:0 24px;box-sizing:border-box;font-size:clamp(1.45rem,2.5vw,1.9rem);font-weight:700;letter-spacing:-.02em;color:var(--text-primary);line-height:1.2;position:relative}.section-heading:before{content:"";display:block;width:54px;height:2px;margin-bottom:14px;background:color-mix(in srgb,var(--accent-primary, #800080) 72%,transparent);border-radius:999px}.paragraph-image{position:relative;width:100%;max-width:100%;height:clamp(210px,42vw,350px);overflow:hidden;margin:10px 0 22px;border-radius:0;box-shadow:none;display:block}.paragraph-image img{position:absolute;inset:0;display:block;width:100%;height:100%;object-fit:cover;margin:0;border-radius:0;opacity:0;transition:opacity .5s ease-in-out}.paragraph-image img.loaded{opacity:1}.article-image-placeholder{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:linear-gradient(45deg,#4527a01a,#4527a005);color:var(--accent-primary)}.article-image-placeholder.is-lazy:after{content:"";position:absolute;inset:0;background:linear-gradient(110deg,transparent 0%,rgba(255,255,255,.18) 45%,transparent 100%);transform:translate(-100%);animation:article-image-shimmer 1.4s ease-in-out infinite}@media(prefers-color-scheme:dark){.article-image-placeholder{background:linear-gradient(45deg,#673ab740,#673ab70d);color:#fff}}@keyframes article-image-shimmer{to{transform:translate(100%)}}.paragraph-image.left,.paragraph-image.right{float:none;display:block}.article-text{width:100%;max-width:760px;margin:0 auto;padding:0 24px;box-sizing:border-box;font-size:1.08rem;line-height:1.9;color:var(--text-primary);text-align:justify;text-justify:inter-word;-webkit-hyphens:auto;hyphens:auto;text-wrap:pretty;opacity:.96}.interactive-text-container{display:inline}.article-text.is-lead{font-size:1.16rem;line-height:2}.article-text.is-lead .interactive-text-container:first-letter{float:left;font-size:4rem;line-height:.84;font-weight:700;margin-right:.12em;margin-top:.12em;color:var(--accent-primary, #800080)}@media(max-width:768px){.quiz-article-container{padding:6px 0 18px}.article-title{font-size:1.6em}.article-banner,.article-banner img{height:200px}.section-heading{font-size:1.4rem;padding:0 24px}.paragraph-image{float:none!important;width:100%;max-width:100%;height:clamp(190px,54vw,310px);margin:1em 0 18px}.article-text{padding:0 24px;font-size:1.03rem;line-height:1.84;text-align:left;-webkit-hyphens:none;hyphens:none}.article-text.is-lead{font-size:1.08rem;line-height:1.9}.article-text.is-lead .interactive-text-container:first-letter{font-size:3.2rem;margin-top:.08em}.dre-audio-player{position:relative;max-width:calc(100vw - 12px);margin-right:0}.dre-sticky-player{top:20px;left:50%!important;right:auto!important;transform:translate(-50%);width:calc(100vw - 12px)!important;max-width:calc(100vw - 12px)!important;margin-left:0!important;margin-right:0!important}}@media(max-width:480px){.article-banner,.article-banner img{height:150px}}.interactive-word{cursor:pointer;display:inline;border-radius:5px;padding:0 2px;transition:background-color .2s,color .2s;user-select:none;-webkit-user-select:none;box-decoration-break:clone;-webkit-box-decoration-break:clone}.highlighted{background-color:#f0f0f0;color:var(--accent-primary, #800080);font-weight:inherit;text-shadow:0 0 0 currentColor,.35px 0 0 currentColor,-.35px 0 0 currentColor,0 .35px 0 currentColor}.theme-highlight-active{background-color:#f0f0f0;color:var(--accent-primary, #800080)!important;font-weight:inherit;text-shadow:0 0 0 currentColor,.35px 0 0 currentColor,-.35px 0 0 currentColor,0 .35px 0 currentColor;border-radius:5px;padding:0 2px}.vocabulary-highlight{background-color:#007bff1a;color:#007bff;font-weight:inherit;text-shadow:0 0 0 currentColor,.35px 0 0 currentColor,-.35px 0 0 currentColor,0 .35px 0 currentColor;padding:0 2px;border-radius:5px}.vocabulary-highlight.theme-highlight-active{background-color:#f0f0f0;color:var(--accent-primary, #800080)!important}@media(prefers-color-scheme:dark){.vocabulary-highlight{background-color:#007bff66;color:#66b0ff}.theme-highlight-active,.vocabulary-highlight.theme-highlight-active{background-color:var(--accent-primary, #800080)!important;color:var(--text-on-accent, #ffffff)!important}}.definition-tooltip{background:var(--active-theme-color, #800080);color:#fff;border-radius:12px;box-shadow:0 4px 10px #00000040;padding:10px 15px;width:300px;max-width:320px;font-size:var(--tooltip-font-size, .78em);border:none;line-height:1.5;z-index:10000;position:fixed;top:0;left:0;opacity:0;transform:scale(.95);transition:opacity .2s ease-in-out,transform .2s ease-in-out,visibility 0s linear .2s;pointer-events:none;visibility:hidden}.definition-tooltip.visible{opacity:1;transform:scale(1);pointer-events:auto;visibility:visible;transition:opacity .2s ease-in-out,transform .2s ease-in-out,visibility 0s linear 0s}.definition-tooltip.is-loading-content{width:auto;min-width:unset;max-width:none;padding:4px 10px;display:flex;justify-content:center;align-items:center;border-radius:20px;font-size:var(--tooltip-loading-font-size, .74em)}.tooltip-loading{color:#ffffffe6;text-align:center;font-style:italic;padding:10px;font-size:.9em}.tooltip-header{display:flex;align-items:flex-start;gap:8px;margin-bottom:8px;border-bottom:1px solid rgba(255,255,255,.2);padding-bottom:8px}.tooltip-entry+.tooltip-entry{margin-top:10px;padding-top:10px;border-top:1px solid rgba(255,255,255,.18)}.tooltip-entry .tooltip-header{margin-bottom:8px}.tooltip-entry .tooltip-body:last-child{margin-bottom:0}.audio-btn{background:none;border:none;cursor:pointer;padding:0;width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:transform .2s,background-color .28s ease,box-shadow .28s ease,border-color .28s ease;position:relative;flex-shrink:0;overflow:hidden;will-change:transform,opacity}.audio-btn:hover{transform:scale(1.1)}.audio-btn:disabled{cursor:default}.audio-btn.is-playing{background-color:#fff;transform:none}.audio-btn svg{width:100%;height:100%;display:block;opacity:1;transform:scale(1);transition:opacity .28s ease,transform .34s cubic-bezier(.22,.9,.22,1.12)}.audio-btn svg circle{fill:#fff}.audio-btn svg path{fill:var(--active-theme-color, #800080)}.audio-btn svg line{stroke:var(--active-theme-color, #800080);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.audio-waveform{width:100%;height:100%;display:inline-flex;align-items:center;justify-content:center;gap:2px;opacity:1;transform:scale(1);transition:opacity .28s ease,transform .34s cubic-bezier(.22,.9,.22,1.12)}.audio-waveform span{width:2px;height:9px;border-radius:999px;background:var(--active-theme-color, #800080);animation:tooltip-audio-wave .9s ease-in-out infinite;transform-origin:center}.audio-waveform span:nth-child(2){animation-delay:.1s}.audio-waveform span:nth-child(3){animation-delay:.2s}.audio-waveform span:nth-child(4){animation-delay:.3s}@keyframes tooltip-audio-wave{0%,to{transform:scaleY(.45);opacity:.7}50%{transform:scaleY(1);opacity:1}}.audio-btn.is-loading{cursor:wait;background:radial-gradient(circle at 30% 30%,#ffffff4d,#ffffff14 68%),#ffffff1f;box-shadow:inset 0 0 0 1px #ffffff2e,0 0 0 1px #ffffff14}.audio-btn.is-loading svg,.audio-btn.is-loading .audio-waveform{opacity:0;transform:scale(.72)}.audio-btn.is-loading:before{content:"";position:absolute;inset:0;border-radius:50%;background:radial-gradient(circle at center,rgba(255,255,255,.18),transparent 72%);animation:tooltip-audio-pulse 1.2s ease-in-out infinite}.audio-btn.is-loading:after{content:"";position:absolute;top:0;left:-35%;width:58%;height:100%;background:linear-gradient(90deg,transparent 0%,rgba(255,255,255,.92) 48%,transparent 100%);transform:skew(-18deg) translate(0);animation:dre-shimmer 1.15s ease-in-out infinite;border-radius:50%}@keyframes dre-shimmer{0%{transform:skew(-18deg) translate(-150%);opacity:0}20%{opacity:.9}to{transform:skew(-18deg) translate(320%);opacity:0}}@keyframes tooltip-audio-pulse{0%,to{opacity:.45;transform:scale(.94)}50%{opacity:.9;transform:scale(1.02)}}.definition-tooltip .word-title{font-weight:700;font-size:var(--tooltip-title-font-size, .98em);color:#fff;display:block;line-height:1.2;white-space:nowrap;overflow:hidden;text-overflow:clip}.definition-tooltip .word-type{font-style:italic;color:#fffc;font-size:.9em;display:block;margin-top:2px;line-height:1.15}.word-meta{min-width:0;flex:1 1 auto;display:flex;flex-direction:column;justify-content:center;overflow:hidden;padding-top:1px}.definition-tooltip .word-title.is-phrase.is-long{font-size:.91em}.definition-tooltip .word-title.is-phrase.is-very-long{font-size:.84em}.wordlist-btn{position:relative;margin-left:auto;width:28px;height:28px;padding:0;border:1.5px solid rgba(255,255,255,.32);border-radius:999px;background:#ffffff14;color:#fff;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;transition:transform .22s ease,border-color .22s ease,background-color .22s ease,opacity .22s ease}.wordlist-btn:hover:not(:disabled){transform:scale(1.06);background:#ffffff24;border-color:#ffffff80}.wordlist-btn:disabled{cursor:default}.wordlist-icon{position:absolute;width:15px;height:15px;opacity:0;transform:scale(.82);transition:opacity .22s ease,transform .22s ease}.wordlist-icon path,.wordlist-icon circle{fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.wordlist-btn.state-plus .plus-icon,.wordlist-btn.state-loading .loading-icon,.wordlist-btn.state-added .tick-icon,.wordlist-btn.state-error .error-icon{opacity:1;transform:scale(1)}.wordlist-btn.state-loading .loading-icon{animation:tooltip-wordlist-spin 1s linear infinite}.wordlist-btn.state-loading .loading-icon circle{stroke-dasharray:44 100;stroke-dashoffset:8}.wordlist-btn.state-added{background:#ffffff29;border-color:#ffffff7a}.wordlist-btn.state-error{background:#ff78782e;border-color:#ffb4b4bf}@keyframes tooltip-wordlist-spin{0%{transform:scale(1) rotate(0)}to{transform:scale(1) rotate(360deg)}}.tooltip-body{line-height:1.5}.definition{margin:0 0 8px}.definition strong{color:#fff;font-weight:800}.definition em{color:#ffffffe6}.translation{margin-top:8px;padding-top:8px;border-top:1px dashed rgba(255,255,255,.3);font-size:.85em;color:#ffffffe6}.translation strong{color:#fff}.tooltip-translation-loader{display:inline-block;width:96px;max-width:100%;height:.85em;border-radius:999px;vertical-align:middle;background:linear-gradient(90deg,#ffffff2e,#ffffff6b,#ffffff2e);background-size:200% 100%;animation:tooltip-translation-shimmer 1.1s linear infinite}@keyframes tooltip-translation-shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.example-sentence{margin-top:8px;font-style:italic;color:#ffffffd9}.tooltip-arrow{position:absolute;bottom:-6px;left:50%;transform:translate(-50%);width:0;height:0;border-left:6px solid transparent;border-right:6px solid transparent;border-top:6px solid var(--active-theme-color, #800080)}body.light-mode .wordlist-btn{border-color:#ffffff73;background:#ffffff24}body.light-mode .wordlist-btn:hover:not(:disabled){background:#fff3}.ll-realtime-widget{width:100%;margin-top:16px;padding-bottom:8px}.ll-realtime-open-btn{display:flex;align-items:center;justify-content:center;gap:8px;margin:0 auto;width:fit-content;border:none;border-radius:999px;padding:12px 22px;font-size:15px;font-weight:700;cursor:pointer;color:#fff;background:var(--accent-primary);box-shadow:0 12px 28px rgba(var(--accent-primary-rgb),.35)}.ll-open-btn-icon{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;color:#fffffff2}.ll-open-btn-icon svg{width:26px;height:26px}.ll-realtime-open-btn:disabled{opacity:.7;cursor:wait}.ll-realtime-open-btn.is-locked{opacity:.62;cursor:not-allowed;box-shadow:0 10px 22px #00000047}.ll-realtime-layer{position:fixed;inset:0;z-index:2147483000;background:#080a122e;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);--ll-safe-bottom: env(safe-area-inset-bottom, 0px);--ll-controls-bottom-offset: calc(var(--ll-safe-bottom) + 2px);--ll-controls-row-bottom: 2.8vh;--ll-mic-bottom: 8.2vh;--ll-transcript-bottom: 19vh}.ll-realtime-inner{position:relative;width:100%;height:100vh;margin:0;padding-top:clamp(12px,3vh,30px);display:flex;flex-direction:column;align-items:center;justify-content:flex-start;background:transparent}.ll-realtime-close{position:absolute;top:12px;right:14px;width:38px;height:38px;border:none;border-radius:50%;font-size:30px;line-height:1;color:#fff;background:#00000038;cursor:pointer;z-index:3}.ll-realtime-status{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.ll-realtime-mascot-wrap{margin:8px 0 0;width:min(420px,72vw);aspect-ratio:1;border:0;background:transparent;cursor:pointer;transform:scale(1);opacity:1}.ll-realtime-mascot{display:block;width:100%;height:100%;color:var(--accent-primary);--ll-speech-level: 0}.ll-realtime-widget.is-intro .ll-realtime-mascot-wrap,.ll-realtime-layer.is-intro .ll-realtime-mascot-wrap{animation:ll-mascot-grow-in var(--ll-intro-duration, 6.2s) cubic-bezier(.22,.8,.18,1) forwards}.ll-realtime-layer.is-closing .ll-realtime-mascot-wrap{animation:ll-mascot-shrink-out .56s cubic-bezier(.2,.75,.2,1) forwards}.ll-realtime-mascot .ll-aura{transform-origin:100px 100px;opacity:calc(.28 + (var(--ll-speech-level) * .62));filter:drop-shadow(0 0 calc(5px + (var(--ll-speech-level) * 24px)) color-mix(in srgb,currentColor 78%,transparent)) saturate(calc(.96 + (var(--ll-speech-level) * .5)));transition:opacity 80ms linear,filter 80ms linear}.ll-realtime-mascot.state-idle .ll-aura{animation:ll-pulse-idle 4s infinite ease-in-out}.ll-realtime-mascot.state-speaking .ll-aura{animation:ll-pulse-speak 1.9s infinite ease-in-out}.ll-realtime-mascot .ll-bot-core{transform-origin:100px 100px}.ll-realtime-mascot.state-idle .ll-bot-core,.ll-realtime-mascot.state-speaking .ll-bot-core{animation:ll-float-core 4s infinite ease-in-out}.ll-realtime-mascot .ll-bot-panels{transform-origin:100px 100px;animation:ll-float-panels 5s infinite ease-in-out}.ll-realtime-mascot .ll-visor-content{animation:ll-visor-glow 3s infinite ease-in-out}.ll-realtime-mascot.state-speaking .ll-visor-content{animation:ll-visor-glow 1.35s infinite ease-in-out}.ll-realtime-mascot .ll-face-idle{transform-origin:100px 85px;animation:ll-blink 4.5s infinite linear}.ll-realtime-mascot .ll-face-idle,.ll-realtime-mascot .ll-face-speak{opacity:0;transform:scale(.965);transform-origin:100px 83px;transition:opacity .7s cubic-bezier(.22,.61,.36,1),transform .7s cubic-bezier(.22,.61,.36,1),filter .7s cubic-bezier(.22,.61,.36,1);will-change:opacity,transform,filter}.ll-realtime-mascot.state-idle .ll-face-idle{opacity:1;transform:scale(1);filter:blur(0)}.ll-realtime-mascot.state-idle .ll-face-speak{opacity:0;transform:scale(.94);filter:blur(.45px)}.ll-realtime-mascot.state-speaking .ll-face-idle{opacity:0;transform:scale(1.045);filter:blur(.45px)}.ll-realtime-mascot.state-speaking .ll-face-speak{opacity:1;transform:scale(1);filter:blur(0)}.ll-realtime-mascot .ll-waveform-path{fill:none;stroke:currentColor;stroke-width:2.7;stroke-linecap:round;stroke-linejoin:round;opacity:.54;filter:blur(.12px);transition:opacity .18s ease,filter .18s ease}.ll-realtime-mascot.state-voice-active .ll-waveform-path{opacity:1;filter:blur(0)}.ll-realtime-transcript{position:fixed!important;left:50%;bottom:var(--ll-transcript-bottom)!important;transform:translate(-50%);width:min(760px,calc(100% - 42px));min-height:28px;max-height:134px;overflow:auto;padding:10px 14px;border-radius:12px;background:#00000052;border:1px solid rgba(255,255,255,.14);color:#fff;text-align:center;font-size:15px;line-height:1.45;font-weight:500;opacity:0}.ll-realtime-transcript.has-text{opacity:1}.ll-realtime-countdown{position:relative;border:1px solid rgba(255,255,255,.28);border-radius:999px;padding:8px 12px;min-width:64px;text-align:center;font-size:13px;font-weight:700;color:#fff;background:#00000052}.ll-realtime-countdown.is-time-up{border-color:#ff6060bf;color:#ff6b6b;animation:ll-timeup-pulse 1.6s ease-in-out infinite}.ll-realtime-mic-indicator{position:fixed!important;left:50%!important;bottom:var(--ll-mic-bottom)!important;top:auto!important;right:auto!important;transform:translate(-50%)!important;display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;padding:0;border-radius:50%;background:rgba(var(--ll-accent-rgb),.12);border:1px solid rgba(var(--ll-accent-rgb),.3);color:var(--ll-accent);cursor:pointer;--ll-mic-level: 0;--ll-accent-rgb: var(--accent-primary-rgb, 74, 163, 255);--ll-accent: var(--accent-primary, #4aa3ff);transition:transform .18s ease,border-color .18s ease,color .18s ease,box-shadow .18s ease;overflow:visible}.ll-realtime-mic-indicator:disabled{opacity:1}.ll-realtime-mic-indicator:before{content:"";position:absolute;inset:-8px;border-radius:50%;background:radial-gradient(circle,rgba(var(--ll-accent-rgb),calc(.12 + (var(--ll-mic-level) * .22))),rgba(var(--ll-accent-rgb),0) 68%);transform:scale(calc(.78 + (var(--ll-mic-level) * .46)));opacity:calc(.2 + (var(--ll-mic-level) * .48));pointer-events:none;transition:transform 70ms linear,opacity 70ms linear}.ll-realtime-mic-ripple{position:absolute;inset:-6px;border-radius:50%;border:3px solid rgba(var(--ll-accent-rgb),calc(.3 + (var(--ll-mic-level) * .7)));transform:scale(calc(1.02 + (var(--ll-mic-level) * .95)));opacity:calc(.18 + (var(--ll-mic-level) * .62));pointer-events:none;transition:transform 70ms linear,opacity 70ms linear,border-color 70ms linear}.ll-realtime-mic-core{position:relative;display:inline-flex;align-items:center;justify-content:center;width:100%;height:100%;border-radius:50%;transform:scale(1);transition:transform 80ms linear,background .12s ease,box-shadow .12s ease;background:#ffffff08}.ll-realtime-mic-slash{position:absolute;width:34px;height:4.5px;border-radius:999px;background:#ff3b30;transform:rotate(-35deg) scaleX(0);opacity:0;pointer-events:none;box-shadow:0 0 8px #ff3b3066;transition:transform .18s ease,opacity .18s ease}.ll-realtime-mic-indicator.is-locked{color:rgba(var(--ll-accent-rgb),.52);border-color:rgba(var(--ll-accent-rgb),.22);cursor:not-allowed}.ll-realtime-mic-indicator.is-locked:before,.ll-realtime-mic-indicator.is-locked .ll-realtime-mic-ripple{opacity:0}.ll-realtime-mic-indicator.is-muted{color:var(--ll-accent)}.ll-realtime-mic-indicator.is-muted .ll-realtime-mic-core{background:rgba(var(--ll-accent-rgb),.1);box-shadow:inset 0 0 0 1px rgba(var(--ll-accent-rgb),.22)}.ll-realtime-mic-indicator.is-muted:before,.ll-realtime-mic-indicator.is-muted .ll-realtime-mic-ripple{opacity:0}.ll-realtime-mic-indicator.is-muted .ll-realtime-mic-slash{transform:rotate(-35deg) scaleX(1);opacity:1}.ll-realtime-mic-indicator.is-unmuted{color:rgba(var(--ll-accent-rgb),.98);border-color:rgba(var(--ll-accent-rgb),.45)}.ll-realtime-mic-indicator.is-unmuted .ll-realtime-mic-core{background:rgba(var(--ll-accent-rgb),.12);box-shadow:inset 0 0 0 1px rgba(var(--ll-accent-rgb),.2)}.ll-realtime-mic-icon{width:22px;height:22px;fill:currentColor}.ll-realtime-mic-indicator.is-listening{color:var(--ll-accent);border-color:rgba(var(--ll-accent-rgb),.95);box-shadow:0 0 calc(10px + (var(--ll-mic-level) * 20px)) rgba(var(--ll-accent-rgb),.58)}.ll-realtime-mic-indicator.is-listening .ll-realtime-mic-core{transform:scale(calc(1.02 + (var(--ll-mic-level) * .18)));background:rgba(var(--ll-accent-rgb),.2);box-shadow:inset 0 0 0 1px rgba(var(--ll-accent-rgb),.35)}.ll-realtime-mic-indicator.is-listening .ll-realtime-mic-ripple{transform:scale(calc(1.1 + (var(--ll-mic-level) * 1.05)));opacity:calc(.45 + (var(--ll-mic-level) * .45));border-color:rgba(var(--ll-accent-rgb),calc(.52 + (var(--ll-mic-level) * .42)))}.ll-realtime-mic-indicator.is-ready-pulse{animation:ll-mic-ready-bulge-shadow .46s ease-out 2}.ll-realtime-mic-indicator.is-ready-pulse .ll-realtime-mic-core{animation:ll-mic-ready-bulge-scale .46s ease-out 2}.ll-realtime-subtitle-toggle{position:relative;border:1px solid rgba(255,255,255,.2);border-radius:999px;padding:8px 12px;font-size:13px;line-height:1;font-weight:600;color:#fffffff2;background:#00000052;cursor:pointer;z-index:5}.ll-realtime-bottom-row{position:fixed;left:0;right:0;bottom:var(--ll-controls-row-bottom);display:flex;align-items:flex-end;justify-content:space-between;padding-left:4vw;padding-right:4vw;pointer-events:none;z-index:5}.ll-realtime-subtitle-toggle:hover{border-color:#ffffff52}.ll-realtime-modal-backdrop{position:fixed;inset:0;z-index:2147483600;background:#00000073;display:flex;align-items:center;justify-content:center;padding:20px}.ll-realtime-modal{width:min(460px,calc(100vw - 32px));border-radius:14px;background:#fff;color:#111;padding:18px;box-shadow:0 20px 48px #00000052}.ll-realtime-modal h4{margin:0 0 8px;font-size:18px;font-weight:700}.ll-realtime-modal p{margin:0;font-size:14px;line-height:1.45}.ll-realtime-modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:16px}.ll-realtime-modal-primary,.ll-realtime-modal-secondary{border-radius:999px;border:1px solid transparent;padding:8px 14px;font-size:13px;font-weight:700;cursor:pointer}.ll-realtime-modal-primary{background:var(--accent-primary);color:#fff}.ll-realtime-modal-secondary{border-color:#d3d9e2;background:#fff;color:#222}.ll-realtime-close,.ll-realtime-countdown,.ll-realtime-mic-indicator,.ll-realtime-transcript,.ll-realtime-subtitle-toggle{opacity:0;visibility:hidden;pointer-events:none;transition:opacity .3s ease,transform .3s ease}.ll-realtime-close{transform:translateY(-8px)}.ll-realtime-layer .ll-realtime-close{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}.ll-realtime-countdown,.ll-realtime-subtitle-toggle{transform:translateY(10px)}.ll-realtime-mic-indicator{transform:translate(-50%) translateY(10px)!important}.ll-realtime-transcript{transform:translate(-50%) translateY(10px)}.ll-realtime-subtitle-toggle{transform:translateY(10px)}.ll-realtime-countdown,.ll-realtime-subtitle-toggle{pointer-events:auto}.ll-realtime-widget.is-controls-live .ll-realtime-close,.ll-realtime-widget.is-controls-live .ll-realtime-countdown,.ll-realtime-widget.is-controls-live .ll-realtime-mic-indicator,.ll-realtime-widget.is-controls-live .ll-realtime-subtitle-toggle,.ll-realtime-layer.is-controls-live .ll-realtime-close,.ll-realtime-layer.is-controls-live .ll-realtime-countdown,.ll-realtime-layer.is-controls-live .ll-realtime-mic-indicator,.ll-realtime-layer.is-controls-live .ll-realtime-subtitle-toggle{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}.ll-realtime-widget.is-controls-live .ll-realtime-countdown,.ll-realtime-widget.is-controls-live .ll-realtime-subtitle-toggle,.ll-realtime-layer.is-controls-live .ll-realtime-countdown,.ll-realtime-layer.is-controls-live .ll-realtime-subtitle-toggle{transform:translateY(0)}.ll-realtime-widget.is-controls-live .ll-realtime-mic-indicator,.ll-realtime-layer.is-controls-live .ll-realtime-mic-indicator{transform:translate(-50%) translateY(0)!important}.ll-realtime-widget.is-controls-live .ll-realtime-transcript.has-text,.ll-realtime-layer.is-controls-live .ll-realtime-transcript.has-text{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%) translateY(0)}.ll-realtime-widget.is-subtitles-hidden .ll-realtime-transcript,.ll-realtime-layer.is-subtitles-hidden .ll-realtime-transcript{display:none}@keyframes ll-float-core{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes ll-float-panels{0%,to{transform:translateY(0)}50%{transform:translateY(-15px)}}@keyframes ll-speak-bounce{0%,to{transform:translateY(0) scale(1)}50%{transform:translateY(-2.8px) scale(1.012)}}@keyframes ll-blink{0%,93%,97%,to{transform:scaleY(1)}95%{transform:scaleY(.1)}}@keyframes ll-pulse-idle{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}@keyframes ll-pulse-speak{0%,to{transform:scale(1)}50%{transform:scale(1.2)}}@keyframes ll-visor-glow{0%,to{filter:drop-shadow(0 0 5px currentColor)}50%{filter:drop-shadow(0 0 15px currentColor)}}@keyframes ll-mic-pulse{0%{box-shadow:0 0 rgba(var(--accent-primary-rgb),.52)}to{box-shadow:0 0 0 12px rgba(var(--accent-primary-rgb),0)}}@keyframes ll-mic-ready-bulge-shadow{0%{box-shadow:0 0 rgba(var(--ll-accent-rgb),0)}45%{box-shadow:0 0 0 12px rgba(var(--ll-accent-rgb),.5)}to{box-shadow:0 0 rgba(var(--ll-accent-rgb),0)}}@keyframes ll-mic-ready-bulge-scale{0%{transform:scale(1)}45%{transform:scale(1.22)}to{transform:scale(1)}}@keyframes ll-mascot-grow-in{0%{transform:scale(.12);opacity:.12}82%{transform:scale(1.02);opacity:1}to{transform:scale(1);opacity:1}}@keyframes ll-mascot-shrink-out{0%{transform:scale(1);opacity:1}to{transform:scale(.12);opacity:.1}}@keyframes ll-timeup-pulse{0%,to{transform:scale(1);box-shadow:0 0 #ff6b6b2e}50%{transform:scale(1.03);box-shadow:0 0 0 8px #ff6b6b00}}@media(max-width:768px){.ll-realtime-layer{--ll-controls-bottom-offset: calc(var(--ll-safe-bottom) + 4px);--ll-controls-row-bottom: 3.1vh;--ll-mic-bottom: 8.8vh;--ll-transcript-bottom: 20vh}.ll-realtime-inner{padding-top:clamp(14px,5vh,42px)}.ll-realtime-mascot-wrap{width:min(350px,85vw)}.ll-realtime-transcript{width:calc(100% - 28px);font-size:14px}.ll-realtime-countdown,.ll-realtime-subtitle-toggle{font-size:12px;padding:7px 10px}}.discussion-questions-list{display:flex;flex-direction:column;gap:10px;padding-bottom:120px}.discussion-next-reveal{margin-top:18px}.discussion-next-btn{margin:0 auto}.discussion-question-card{position:relative;display:flex;align-items:flex-start;gap:10px;width:100%;padding:15px 18px;border:1px solid var(--border-color);border-left:4px solid var(--border-color);border-radius:12px;background:var(--bg-secondary);color:var(--text-primary);text-align:left;cursor:pointer;transition:background-color .25s ease,border-left-color .25s ease,transform .25s ease,padding-left .25s ease,box-shadow .25s ease;-webkit-tap-highlight-color:transparent}.discussion-question-card:active{transform:scale(1.01)}.discussion-question-card.is-active{background-color:rgba(var(--accent-primary-rgb),.18);border-color:var(--accent-primary);border-left-color:var(--accent-primary);padding-left:23px;box-shadow:0 8px 18px #0000001a}.discussion-question-number{flex:0 0 auto;min-width:24px;color:var(--text-secondary);font-size:.96rem;font-weight:700}.discussion-question-meta{flex:0 0 auto;min-width:24px;display:flex;flex-direction:column;align-items:center;gap:6px}.discussion-question-text{font-size:1rem;font-weight:600;line-height:1.55;display:flex;flex-direction:column;gap:6px;flex:1 1 auto;min-width:0}.discussion-answer-starter-wrap{display:grid;grid-template-rows:0fr;transition:grid-template-rows .48s cubic-bezier(.25,.8,.25,1),margin-top .48s cubic-bezier(.25,.8,.25,1);margin-top:0}.discussion-question-card.is-expanded .discussion-answer-starter-wrap{grid-template-rows:1fr;margin-top:8px}.discussion-answer-starter{display:block;overflow:hidden;font-size:.95rem;font-weight:650;line-height:1.5;color:var(--text-primary);background:color-mix(in srgb,var(--accent-primary) 12%,var(--bg-primary));border:1px solid color-mix(in srgb,var(--accent-primary) 38%,var(--border-color));border-left:4px solid var(--accent-primary);border-radius:10px;padding:0 12px;max-height:0;opacity:0;transform:translateY(-4px);transition:max-height .48s cubic-bezier(.25,.8,.25,1),opacity .36s ease,transform .36s ease,padding .48s cubic-bezier(.25,.8,.25,1)}.discussion-question-card.is-expanded .discussion-answer-starter{max-height:220px;opacity:1;transform:translateY(0);padding:10px 12px}.discussion-expand-indicator{flex:0 0 auto;width:20px;height:20px;margin-left:0;color:var(--accent-primary);display:inline-flex;align-items:center;justify-content:center;transition:transform .36s cubic-bezier(.25,.8,.25,1),color .25s ease}.discussion-expand-indicator svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2.3;stroke-linecap:round;stroke-linejoin:round}.discussion-expand-indicator.is-rotated{transform:rotate(90deg);color:var(--accent-primary)}.discussion-question-text .interactive-word,.discussion-question-text .theme-highlight-active,.discussion-question-text .highlighted,.discussion-question-text .vocabulary-highlight{padding-left:0;padding-right:0;text-shadow:none}.theme-dark .discussion-question-card.is-active{background-color:rgba(var(--accent-primary-rgb),.22);box-shadow:0 8px 18px #0000003d}@media(max-width:640px){.discussion-question-card{padding:14px 16px}}.quiz-finish-screen{display:flex;flex-direction:column;align-items:center;justify-content:flex-start;text-align:center;min-height:100%;padding:48px 20px 120px}.quiz-finish-screen h3{margin:0 0 12px}.quiz-finish-screen p{max-width:320px;margin:0;line-height:1.6;color:var(--text-secondary)}.quiz-finish-button{display:inline-flex;align-items:center;justify-content:center;width:100%;max-width:260px;min-height:50px;margin-top:24px;padding:12px 22px;background:var(--accent-primary);color:var(--text-on-accent);border:none;border-radius:999px;font-size:1rem;font-weight:700;cursor:pointer;box-shadow:0 8px 20px rgba(var(--accent-primary-rgb),.24);transition:transform .16s ease,filter .2s ease,box-shadow .2s ease}.quiz-finish-button:hover{filter:brightness(1.02);box-shadow:0 10px 24px rgba(var(--accent-primary-rgb),.3)}.quiz-finish-button:active{transform:translateY(1px) scale(.99)}.quiz-bottom-next-reveal{display:flex;justify-content:center;margin-top:28px;margin-bottom:8px;max-height:0;opacity:0;pointer-events:none;overflow:hidden;transition:max-height .42s cubic-bezier(.22,.9,.24,1),opacity .28s ease}.quiz-bottom-next-reveal.is-visible{max-height:92px;opacity:1;pointer-events:auto}.quiz-bottom-next-reveal.is-visible .quiz-bottom-next-btn{animation:quiz-next-pop-in .62s cubic-bezier(.2,.86,.2,1)}.quiz-bottom-next-reveal.is-after-vocab{margin-top:38px}.quiz-bottom-next-btn{min-width:184px;min-height:50px;justify-content:center}.quiz-bottom-next-btn:active{transform:translateY(1px) scale(.99)}.quiz-bottom-next-arrow{display:inline-flex;align-items:center;justify-content:center;font-weight:900;letter-spacing:.04em}@keyframes quiz-next-pop-in{0%{transform:scale(.86) translateY(10px);opacity:0}48%{transform:scale(1.05) translateY(0);opacity:1}to{transform:scale(1) translateY(0);opacity:1}}.quiz-mcq-container{max-width:100%;margin:0 auto;box-sizing:border-box;color:var(--text-primary)}.mcq-questions-list{list-style:none;padding:0;margin:0;display:grid;gap:18px}.mcq-question-item{position:relative;list-style:none;padding:20px 18px 18px;border:1px solid color-mix(in srgb,var(--border-color) 78%,transparent);border-radius:12px;background:var(--bg-secondary);box-shadow:0 1px 3px #0000000f;overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease}.mcq-question-item:before{content:"";position:absolute;inset:0 auto 0 0;width:5px;background:var(--accent-primary);opacity:.9}.mcq-question-item.correct:before{background:var(--accent-green)}.mcq-question-item.incorrect:before{background:var(--accent-red)}.mcq-question-item.unanswered:before{background:var(--accent-yellow)}.mcq-question-item.checked.correct{border-color:color-mix(in srgb,var(--accent-green) 45%,var(--border-color) 55%);box-shadow:0 1px 3px #0000000f}.mcq-question-item.checked.incorrect{border-color:color-mix(in srgb,var(--accent-red) 45%,var(--border-color) 55%);box-shadow:0 1px 3px #0000000f}.mcq-question-item.shake-incorrect{animation:quizShake .42s ease-in-out}.mcq-question-item.checked.unanswered{border-color:color-mix(in srgb,var(--accent-yellow) 55%,var(--border-color) 45%);box-shadow:0 1px 3px #0000000f}.mcq-question-shell{display:grid;gap:14px}.mcq-question-header{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}.mcq-question-number,.mcq-question-status{display:inline-flex;align-items:center;gap:6px;min-height:30px;padding:0 12px;border-radius:999px;font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase}.mcq-question-number{background:color-mix(in srgb,var(--accent-primary) 12%,var(--bg-primary) 88%);color:var(--accent-primary);border:1px solid color-mix(in srgb,var(--accent-primary) 20%,transparent)}.mcq-question-status{border:1px solid transparent}.mcq-question-status.correct{color:#15803d;background:#22c55e1f;border-color:#22c55e4d}.mcq-question-status.incorrect{color:#b91c1c;background:#ef44441f;border-color:#ef44444d}.mcq-question-status.unanswered{color:#b45309;background:#f59e0b24;border-color:#f59e0b4d}.mcq-question-text{font-size:1rem;font-weight:600;line-height:1.65;color:var(--text-primary)}.mcq-options-list{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:10px}.mcq-option{position:relative;font-size:.95em}.mcq-option input[type=radio]{display:none}.mcq-option label{display:grid;grid-template-columns:auto 1fr;align-items:center;gap:12px;padding:14px 16px;border:1px solid color-mix(in srgb,var(--border-color) 85%,transparent);border-radius:10px;background:var(--bg-primary);color:var(--text-primary);transition:transform .18s ease,background-color .25s ease,border-color .25s ease,box-shadow .25s ease,color .25s ease;cursor:pointer;position:relative;overflow:hidden}.mcq-option label:before{content:"";width:22px;height:22px;border-radius:50%;border:2px solid color-mix(in srgb,var(--accent-primary) 35%,var(--border-color) 65%);background:transparent;box-sizing:border-box;transition:transform .18s ease,background-color .2s ease,border-color .2s ease}.mcq-option label:hover{border-color:color-mix(in srgb,var(--accent-primary) 45%,var(--border-color) 55%);box-shadow:0 1px 3px #0000000f}.mcq-option input[type=radio]:checked+label{background:var(--accent-primary);color:var(--text-on-accent);border-color:color-mix(in srgb,var(--accent-primary) 80%,black 20%);box-shadow:none}.mcq-option input[type=radio]:checked+label:before{background:var(--text-on-accent);border-color:var(--text-on-accent);box-shadow:inset 0 0 0 5px var(--accent-primary);transform:scale(1.05)}.mcq-question-item.checked .mcq-option label{cursor:default}.mcq-question-item.checked .mcq-option.correct-answer label{border-color:#22c55e73;background:#22c55e1f;color:var(--text-primary);font-weight:700;box-shadow:none}.mcq-question-item.checked .mcq-option.correct-answer label:before{background:var(--accent-green);border-color:var(--accent-green);box-shadow:inset 0 0 0 5px #fffffff2}.mcq-question-item.checked .mcq-option.selected-incorrect label{border-color:#ef444473;background:#ef44441f;color:var(--text-primary);text-decoration:line-through;box-shadow:none}.mcq-question-item.checked .mcq-option.selected-incorrect label:before{background:var(--accent-red);border-color:var(--accent-red);box-shadow:inset 0 0 0 5px #fffffff2}.mcq-question-item.checked .mcq-option.selected-incorrect label span,.mcq-question-item.checked .mcq-option.selected-incorrect label .interactive-word{text-decoration:line-through}.mcq-question-item.checked .mcq-option.correct-answer label:after,.mcq-question-item.checked .mcq-option.selected-incorrect label:after{position:absolute;right:14px;top:50%;transform:translateY(-50%);font-weight:800;font-size:1rem}.mcq-question-item.checked .mcq-option.correct-answer label:after{content:"✓";color:#15803d}.mcq-question-item.checked .mcq-option.selected-incorrect label:after{content:"✗";color:#b91c1c}.mcq-controls{margin-top:26px;text-align:center;padding:10px 0 72px}.mcq-check-button,.mcq-reset-button{display:inline-flex;align-items:center;justify-content:center;min-width:180px;min-height:48px;padding:12px 22px;background:var(--accent-primary);color:var(--text-on-accent);border:none;border-radius:999px;cursor:pointer;font-size:.98rem;font-weight:800;letter-spacing:.01em;transition:background-color .2s ease,filter .2s ease;box-shadow:none}.mcq-check-button:hover,.mcq-reset-button:hover{filter:brightness(1.02)}.mcq-results-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:10px}.mcq-reset-button--secondary{background:color-mix(in srgb,var(--border-color) 28%,var(--bg-primary) 72%);color:var(--text-primary);min-width:136px}.mcq-next-button{gap:10px;margin-left:auto;min-width:180px;min-height:48px;padding:12px 22px;font-size:.98rem;font-weight:700;letter-spacing:.01em;animation:quizNextButtonPopIn .52s cubic-bezier(.2,.86,.2,1)}.mcq-next-button-arrow{display:inline-flex;align-items:center;justify-content:center;font-weight:900;letter-spacing:.04em}.mcq-feedback-overall{margin-top:0;margin-bottom:10px;padding:14px 16px;font-weight:800;font-size:1rem;border-radius:18px;border:1px solid transparent}.mcq-feedback-overall.success{color:#15803d;background:#22c55e1f;border-color:#22c55e4d}.mcq-feedback-overall.error{color:#b91c1c;background:#ef44441f;border-color:#ef44444d}.mcq-checking-indicator{text-align:center;font-size:.98em;color:var(--text-secondary);padding:10px;font-style:italic}.quiz-placeholder{padding:20px;text-align:center;color:var(--text-secondary)}.confetti-piece{position:absolute;width:8px;height:16px;background-color:#28a745;opacity:0;z-index:9999;pointer-events:none;animation:fadeAndFly 1.5s ease-out forwards}@keyframes fadeAndFly{0%{transform:translate(0) rotate(0) scale(1);opacity:1}to{transform:translate(var(--x),var(--y)) rotate(var(--rot)) scale(.2);opacity:0}}@keyframes quizNextButtonPopIn{0%{transform:scale(.88) translateY(8px);opacity:0}52%{transform:scale(1.04) translateY(0);opacity:1}to{transform:scale(1) translateY(0);opacity:1}}@media(max-width:640px){.mcq-question-item{padding:16px;border-radius:10px}.mcq-option label{padding:13px 14px}.mcq-controls{padding-left:14px;padding-right:14px}.mcq-results-actions{flex-direction:column}.mcq-reset-button,.mcq-next-button{width:100%}}@media(prefers-color-scheme:dark){.mcq-question-item,.mcq-option label{box-shadow:none}}.quiz-tf-container{max-width:100%;margin:0 auto;color:var(--text-primary)}.tf-questions-list{list-style:none;padding:0;margin:0;display:grid;gap:18px}.tf-question-block{position:relative;padding:20px 18px 18px;border:1px solid color-mix(in srgb,var(--border-color) 78%,transparent);border-radius:12px;background:var(--bg-secondary);box-shadow:0 1px 3px #0000000f;overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease}.tf-question-block:before{content:"";position:absolute;inset:0 auto 0 0;width:5px;background:var(--accent-primary)}.tf-question-block.correct:before{background:var(--accent-green)}.tf-question-block.incorrect:before{background:var(--accent-red)}.tf-question-block.unanswered:before{background:var(--accent-yellow)}.tf-question-block.checked.correct{border-color:color-mix(in srgb,var(--accent-green) 45%,var(--border-color) 55%);box-shadow:0 1px 3px #0000000f}.tf-question-block.checked.incorrect{border-color:color-mix(in srgb,var(--accent-red) 45%,var(--border-color) 55%);box-shadow:0 1px 3px #0000000f}.tf-question-block.shake-incorrect{animation:quizShake .42s ease-in-out}.tf-question-block.checked.unanswered{border-color:color-mix(in srgb,var(--accent-yellow) 55%,var(--border-color) 45%);box-shadow:0 1px 3px #0000000f}.tf-question-shell{display:grid;gap:14px}.tf-question-header{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}.tf-question-number,.tf-question-status{display:inline-flex;align-items:center;min-height:30px;padding:0 12px;border-radius:999px;font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase}.tf-question-number{background:color-mix(in srgb,var(--accent-primary) 12%,var(--bg-primary) 88%);color:var(--accent-primary);border:1px solid color-mix(in srgb,var(--accent-primary) 20%,transparent)}.tf-question-status.correct{color:#15803d;background:#22c55e1f;border:1px solid rgba(34,197,94,.3)}.tf-question-status.incorrect{color:#b91c1c;background:#ef44441f;border:1px solid rgba(239,68,68,.3)}.tf-question-status.unanswered{color:#b45309;background:#f59e0b24;border:1px solid rgba(245,158,11,.3)}.tf-question-text{margin:0;font-size:1rem;font-weight:600;line-height:1.65}.tf-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:18px}.tf-btn{display:flex;align-items:center;justify-content:center;min-height:46px;padding:10px 16px;border-radius:999px;border:1px solid color-mix(in srgb,var(--border-color) 85%,transparent);background:var(--bg-primary);color:var(--text-primary);text-align:center;cursor:pointer;transition:transform .18s ease,border-color .25s ease,box-shadow .25s ease,background-color .25s ease,color .25s ease;font-size:.95rem;font-weight:700;font-family:var(--font-main);position:relative;overflow:hidden}.tf-btn:hover:not(:disabled){border-color:color-mix(in srgb,var(--accent-primary) 45%,var(--border-color) 55%);box-shadow:0 1px 3px #0000000f}.tf-btn.selected{background:var(--accent-primary);color:var(--text-on-accent);border-color:color-mix(in srgb,var(--accent-primary) 80%,black 20%);box-shadow:none}.tf-btn.correct-answer{background:#22c55e1f;border-color:#22c55e73;color:var(--text-primary);box-shadow:none}.tf-btn.wrong-answer{background:#ef44441f;border-color:#ef444473;color:var(--text-primary);text-decoration:line-through;box-shadow:none}.tf-btn.correct-answer:after,.tf-btn.wrong-answer:after{position:absolute;right:12px;top:50%;transform:translateY(-50%);font-weight:800;font-size:.95rem}.tf-btn.correct-answer:after{content:"✓";color:var(--accent-green)}.tf-btn.wrong-answer:after{content:"✕";color:var(--accent-red)}.tf-btn:disabled{cursor:default}.tf-controls{margin-top:26px}@media(max-width:640px){.tf-question-block{padding:16px;border-radius:10px}.tf-btn{min-height:46px}}@keyframes quizShake{0%,to{transform:translate(0)}20%{transform:translate(-6px)}40%{transform:translate(5px)}60%{transform:translate(-4px)}80%{transform:translate(3px)}}@media(prefers-color-scheme:dark){.tf-question-block,.tf-btn{box-shadow:none}}.setting-item{display:flex;justify-content:space-between;align-items:center;min-height:48px;padding:4px 0}.setting-item span{font-weight:500;color:var(--text-primary)}.logout-item{margin-top:32px}.button-logout{width:100%;padding:14px;background-color:transparent;color:var(--color-error, #ef4444);border:1px solid var(--border-color);border-radius:12px;cursor:pointer;font-weight:600;transition:all .2s ease}.button-logout:hover{background-color:#ef44440d;border-color:var(--color-error, #ef4444)}.button-logout:active{transform:scale(.98)}.button-logout:disabled{opacity:.5;cursor:not-allowed}.app-version-dashboard{font-size:.8rem;color:var(--text-secondary);text-align:center;margin-top:24px;opacity:.7}.theme-selector{display:flex;gap:12px}.theme-button{width:32px;height:32px;border-radius:50%;border:3px solid transparent;cursor:pointer;transition:transform .2s cubic-bezier(.34,1.56,.64,1),box-shadow .2s;box-shadow:0 2px 4px #0000001a}.theme-button:hover{transform:scale(1.1)}.theme-button.active{border-color:var(--bg-primary);box-shadow:0 0 0 2px var(--text-primary);transform:scale(1.1)}.theme-button.purple{background-color:purple}.theme-button.red{background-color:#e50914}.theme-button.orange{background-color:#ea580c}.settings-modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#0009;display:flex;justify-content:center;align-items:center;z-index:3000;opacity:0;transition:opacity .4s ease;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.settings-modal-overlay.visible{opacity:1}.settings-modal-content{background-color:var(--bg-primary);width:90%;max-width:480px;max-height:85vh;overflow:hidden;border-radius:20px;box-shadow:0 15px 40px #00000040;transform:scale(.95);transition:transform .4s cubic-bezier(.19,1,.22,1);display:flex;flex-direction:column}.settings-modal-overlay.visible .settings-modal-content{transform:scale(1)}.settings-modal-header{display:flex;justify-content:space-between;align-items:center;padding:20px 24px;background:linear-gradient(135deg,var(--bg-secondary) 0%,var(--bg-primary) 100%);border-bottom:1px solid var(--border-color)}.settings-modal-header h2{margin:0;font-size:1.4rem;color:var(--text-primary);font-weight:700}.settings-modal-header .close-btn{background:#0000000d;border:none;font-size:1.25rem;color:var(--text-secondary);cursor:pointer;width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:all .2s ease}.settings-modal-header .close-btn:hover{background-color:#0000001a;color:var(--text-primary);transform:rotate(90deg)}.settings-modal-body{padding:0;overflow-y:auto;flex-grow:1;overscroll-behavior:contain}.settings-section{padding:24px;border-bottom:1px solid var(--border-color)}.settings-section:last-child{border-bottom:none}.settings-section h3{margin-top:0;margin-bottom:20px;font-size:.9rem;color:var(--accent-primary);font-weight:700;text-transform:uppercase;letter-spacing:.1em;border-bottom:2px solid var(--bg-secondary);padding-bottom:8px}.settings-group{display:flex;flex-direction:column;gap:20px}.settings-debug-url{margin:0 24px 24px;padding:14px;border:1px solid var(--border-color);border-radius:10px;background:var(--bg-secondary)}.settings-debug-url h3{margin:0 0 12px;font-size:.78rem;color:var(--accent-primary);text-transform:uppercase;letter-spacing:.08em}.settings-debug-row{display:flex;flex-direction:column;gap:6px;margin-bottom:12px}.settings-debug-row:last-child{margin-bottom:0}.settings-debug-row span{font-size:.78rem;color:var(--text-secondary);font-weight:700}.settings-debug-row code{display:block;padding:8px;border-radius:8px;background:var(--bg-primary);color:var(--text-primary);font-size:.78rem;line-height:1.45;white-space:normal;overflow-wrap:anywhere}.study-modal-overlay *,.study-modal-overlay *:before,.study-modal-overlay *:after{box-sizing:border-box}.study-modal-overlay{position:fixed;inset:0;z-index:2100;display:flex;align-items:flex-end;justify-content:center;background:#0009;opacity:0;pointer-events:none;transition:opacity .3s ease}.study-modal-overlay.is-open{opacity:1;pointer-events:auto}.study-modal-shell{width:100%;height:calc(100% - 12px);display:flex;flex-direction:column;overflow:hidden;background:var(--bg-secondary);border-top-left-radius:18px;border-top-right-radius:18px;box-shadow:0 -10px 40px #0003;transform:translateY(100%);opacity:0;transition:transform .4s cubic-bezier(.32,.72,0,1),opacity .3s ease}.study-modal-overlay.is-open .study-modal-shell{transform:translateY(0);opacity:1}@media(min-width:768px){.study-modal-overlay{align-items:flex-end;padding:0 24px}.study-modal-shell{width:min(calc(100vw - 48px),960px);height:min(calc(100vh - 12px),840px);border-radius:22px 22px 0 0;transform:translateY(100%);box-shadow:0 24px 70px #00000047}.study-modal-overlay.is-open .study-modal-shell{transform:translateY(0)}}@media(min-width:768px)and (max-width:1199px){.study-modal-shell{width:min(calc(100vw - 140px),680px);height:calc(100vh - 12px);max-height:calc(100vh - 12px)}}.study-modal-header{flex-shrink:0;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:20px 30px;border-bottom:1px solid var(--border-color);background:var(--bg-secondary);z-index:1}.study-header-left,.study-header-center{color:var(--accent-primary);font-weight:700}.study-header-left{font-size:1.5rem}.study-header-center{font-size:1.25rem;text-align:center}.study-header-right{display:flex;align-items:center;justify-self:end;gap:14px}.study-session-progress{width:min(260px,36vw);min-width:170px;display:flex;flex-direction:column;gap:0}.study-session-progress-track{--progress-percent: 0%;position:relative;width:100%;height:8px;border-radius:999px;background:color-mix(in srgb,var(--border-color) 82%,transparent);overflow:visible}.study-session-progress-value{position:absolute;left:clamp(22px,var(--progress-percent),calc(100% - 22px));top:-18px;transform:translate(-50%);color:var(--text-secondary);font-size:.74rem;font-weight:700;line-height:1;white-space:nowrap}.study-session-progress-fill{height:100%;border-radius:inherit;background:var(--accent-primary);width:0;transition:width .28s ease}.study-close{border:none;background:transparent;color:#aaa;cursor:pointer;font-size:2rem;line-height:1;padding:0}.study-close:hover{color:var(--text-primary)}.study-modal-body-scroll{flex:1;overflow-y:auto;padding:30px;overflow-x:hidden}.study-options-container{display:flex;justify-content:center;flex-wrap:wrap;gap:20px;padding:20px 0}.study-option-box,.study-option-btn,.study-check-btn,.study-next-btn,.study-quit-cancel,.study-quit-confirm{font-family:var(--font-main);-webkit-tap-highlight-color:transparent}.study-option-box{width:100px;height:100px;border-radius:12px;border:2px solid var(--accent-primary);background:var(--bg-lightest);color:var(--accent-primary);font-size:24px;font-weight:700;cursor:pointer;transition:all .2s ease;box-shadow:0 2px 4px #0000000d}.study-option-box:hover{background:var(--accent-primary);color:var(--text-on-accent);transform:translateY(-2px)}.study-option-box:disabled,.study-option-box.is-disabled{opacity:.42;cursor:not-allowed;background:var(--bg-secondary);color:var(--text-secondary);border-color:var(--border-color);box-shadow:none}.study-option-box:disabled:hover,.study-option-box.is-disabled:hover{background:var(--bg-secondary);color:var(--text-secondary);transform:none}.study-loader{opacity:0;transition:opacity .5s ease-in-out}.study-loader.is-visible{opacity:1}.study-loader-graphic{width:140px;height:120px;margin:40px auto 20px;perspective:600px}.study-loader-graphic svg{width:100%;height:100%;overflow:visible;transform:rotateX(30deg)}.loader-card{fill:#fff;stroke:var(--accent-primary);stroke-width:1.5;rx:4;filter:drop-shadow(0 3px 0 color-mix(in srgb,var(--accent-primary) 20%,transparent))}.loader-card-soft{fill:color-mix(in srgb,var(--accent-primary) 12%,white)}.loader-card-decor{stroke:var(--accent-primary);stroke-width:2;stroke-linecap:round}.loader-card-decor-soft{opacity:.6}.stack-group{animation:study-stack-slide 1s ease-in-out infinite}.flier-left{opacity:0;animation:study-fly-left 2s cubic-bezier(.1,.8,.2,1) infinite}.flier-right{opacity:0;animation:study-fly-right 2s cubic-bezier(.1,.8,.2,1) infinite 1s}.card-fade{animation:study-card-fade 1s linear infinite}.study-loader-text{color:var(--accent-primary);text-align:center;font-size:1.2rem;font-weight:600;animation:study-text-pulse 2s ease-in-out infinite}.study-match-stage{display:flex;flex-direction:column;gap:18px;width:100%}.study-match-prompt{color:var(--text-secondary);text-align:center;font-size:1rem;line-height:1.5}.study-match-board{display:flex;flex-direction:column;gap:14px;align-items:stretch}.study-review-grid{max-width:1120px;width:100%;margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:28px}.study-match-row{display:grid;gap:14px}.study-match-board.is-definition-mode .study-match-row{grid-template-columns:minmax(0,250px) minmax(0,1fr)}.study-match-board.is-translation-mode .study-match-row{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.study-match-card{border-radius:10px;border:2px solid color-mix(in srgb,var(--border-color) 86%,transparent);background:var(--bg-secondary);color:var(--text-primary);box-shadow:0 8px 18px #0000000d;cursor:pointer;transition:border-color .18s ease,background-color .18s ease,box-shadow .22s ease,transform .22s ease,min-height .35s ease,padding .35s ease;outline:none;position:relative;z-index:1;-webkit-tap-highlight-color:transparent}@media(hover:hover){.study-match-card:hover{border-color:color-mix(in srgb,var(--accent-primary) 34%,var(--border-color));transform:scale(1.015);z-index:2}}.study-match-card.is-selected{border-color:var(--accent-primary);background:color-mix(in srgb,var(--accent-primary) 10%,var(--bg-secondary));box-shadow:0 10px 20px color-mix(in srgb,var(--accent-primary) 14%,transparent);transform:scale(1.04);z-index:3}.study-match-card.is-matched{background:color-mix(in srgb,#2ecc71 14%,var(--bg-secondary))!important;border-color:#2f9246!important;color:color-mix(in srgb,#2f9246 86%,var(--text-primary));box-shadow:0 10px 18px #2f92461f;z-index:1}.study-match-card.is-mistake{border-color:var(--accent-primary);background:color-mix(in srgb,var(--accent-primary) 12%,var(--bg-secondary));animation:study-match-shake .4s}.study-match-word-card{opacity:0;transform:translateY(24px) scale(.97);display:flex;align-items:center;justify-content:center;text-align:center;align-self:stretch;height:100%;transition:opacity .42s ease var(--card-delay),transform .56s cubic-bezier(.18,.9,.22,1.08) var(--card-delay),border-color .2s ease,background-color .2s ease,box-shadow .25s ease,min-height .35s ease,padding .35s ease}.study-match-word-card.is-visible{opacity:1;transform:translateY(0) scale(1)}.study-flashcard-container{height:260px;perspective:1000px;opacity:0;transform:translateY(34px);transition:opacity .42s ease var(--card-delay),transform .52s cubic-bezier(.18,.9,.22,1.08) var(--card-delay);will-change:transform,opacity}.study-flashcard-container.is-visible{opacity:1;transform:translateY(0)}.study-flashcard{background-color:transparent;position:relative;width:100%;height:100%;cursor:pointer;display:flex;flex-direction:column;perspective:1000px}.study-flashcard.is-locked{cursor:default}.study-flashcard-inner{position:relative;width:100%;height:100%;transition:transform .82s cubic-bezier(.34,1.56,.64,1),box-shadow .3s ease;transform-style:preserve-3d;transform-origin:center center;box-shadow:0 12px 28px #0000001f;border-radius:15px;will-change:transform}.study-flashcard.is-flipped .study-flashcard-inner{transform:rotateY(180deg)}.study-flashcard-front,.study-flashcard-back{position:absolute;inset:0;width:100%;height:100%;border-radius:15px;backface-visibility:hidden;-webkit-backface-visibility:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:18px 16px;transform-style:preserve-3d}.study-flashcard-front{background:var(--accent-primary);border:2px solid var(--accent-primary);color:var(--text-on-accent);position:relative;font-weight:800;text-shadow:0 2px 4px rgba(0,0,0,.28)}.study-flashcard-front h3{margin:0;font-size:1.5rem;line-height:1.18;color:inherit}.study-flashcard-back{background:color-mix(in srgb,var(--accent-primary) 82%,black 8%);border:2px solid color-mix(in srgb,var(--accent-primary) 88%,black 12%);color:#fff;transform:rotateY(180deg);box-shadow:inset 0 0 20px #0000001f}.study-flashcard-back p{margin:0;font-size:1rem;line-height:1.38;font-weight:500;width:100%;max-height:100%;overflow:hidden;overflow-wrap:anywhere}.study-flashcard-translation{margin:0;font-size:.92rem;line-height:1.32;color:#ffffffe6;transition:opacity .24s ease,transform .24s ease}.study-flashcard-translation.hidden{opacity:0;transform:translateY(-6px)}.study-match-stage.is-board-active .study-match-word-card{height:92px;min-height:92px;padding:16px 18px;align-items:center;justify-content:center;opacity:1;transform:translateY(0) scale(1)}.study-match-board.is-definition-mode .study-match-word-card{min-height:108px;padding:18px}.study-match-definition-card{padding:18px 20px;height:92px;min-height:92px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;overflow:hidden;opacity:0;transform:translate(26px) scale(.985);transition:opacity .35s ease var(--card-delay),transform .48s cubic-bezier(.22,1,.36,1) var(--card-delay),border-color .2s ease,background-color .2s ease,box-shadow .25s ease}.study-match-definition-card.is-visible{opacity:1;transform:translate(0) scale(1)}.study-match-board.is-definition-mode .study-match-definition-card{height:auto;min-height:116px;padding:18px 20px;overflow:visible}.study-match-card-main{font-size:1.18rem;font-weight:700;line-height:1.4;width:100%;overflow-wrap:anywhere}.study-match-word-card .study-match-card-main{font-size:1rem;line-height:1.22}.study-match-definition-card .study-match-card-main{font-size:.92rem;line-height:1.28}.study-match-board.is-definition-mode .study-match-definition-card .study-match-card-main{font-size:.96rem;line-height:1.34}.study-match-card.is-unavailable{opacity:.38;filter:saturate(.4);cursor:default;pointer-events:none}.study-next-btn-container{display:flex;justify-content:center;width:100%;margin:0;padding:0}.study-next-sticky-footer{flex-shrink:0;width:100%;margin:0;padding:8px 16px 10px;background:var(--bg-secondary);border-top:1px solid var(--border-color)}.study-next-btn{position:relative;padding:12px 40px;border:none;border-radius:999px;background:var(--accent-primary);color:var(--text-on-accent);font-size:18px;font-weight:700;cursor:pointer;box-shadow:0 4px 10px color-mix(in srgb,var(--accent-primary) 30%,transparent);transition:all .3s ease}.study-next-btn:hover{transform:translateY(-2px)}.study-next-btn:disabled,.study-next-btn.is-disabled{background:#ccc;box-shadow:none;cursor:not-allowed;transform:none}.study-flashcard-container.is-attention-shake .study-flashcard{animation:study-flashcard-shake .5s ease}.study-quiz-container{width:100%;max-width:600px;margin:0 auto;padding:20px;text-align:center}.study-complete-view{width:100%;max-width:640px;margin:0 auto;display:flex;flex-direction:column;gap:14px;padding:8px 2px 16px}.study-complete-header{text-align:center}.study-complete-header h2{margin:0;color:var(--text-primary)}.study-complete-header p{margin:8px 0 0;color:var(--text-secondary)}.study-complete-list{display:flex;flex-direction:column;gap:10px}.study-complete-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 14px;border-radius:12px;border:1px solid var(--border-color);background:color-mix(in srgb,var(--bg-lightest) 62%,transparent);opacity:0;transform:translateY(10px);transition:opacity .24s ease var(--row-delay),transform .3s cubic-bezier(.22,1,.36,1) var(--row-delay)}.study-complete-row.is-visible{opacity:1;transform:translateY(0)}.study-complete-term{color:var(--text-primary);font-size:1.02rem;font-weight:600;overflow-wrap:anywhere}.study-complete-delta{min-width:44px;text-align:right;font-size:1.05rem;font-weight:800}.study-complete-delta.is-up{color:#16a34a}.study-complete-delta.is-down{color:#dc2626}.study-complete-delta.is-neutral{color:var(--text-secondary)}.study-question-card{width:100%;margin-bottom:30px;padding:34px 32px;border:1px solid var(--border-color);border-radius:16px;background:var(--bg-secondary);box-shadow:0 10px 26px #0000000f;overflow-wrap:anywhere}.study-question-label{display:block;margin-bottom:5px;color:var(--text-secondary);font-size:.8rem}.study-question-text,.study-example-box{color:var(--text-primary);font-size:1.38rem;line-height:1.65;overflow-wrap:anywhere}.study-example-help{display:flex;flex-direction:column;align-items:center;gap:12px;margin:14px 0 18px}.study-example-help-btn{min-height:40px;padding:8px 16px;border:1px solid color-mix(in srgb,var(--accent-primary) 38%,var(--border-color));border-radius:999px;background:color-mix(in srgb,var(--accent-primary) 8%,var(--bg-secondary));color:var(--accent-primary);cursor:pointer;font:inherit;font-size:.88rem;font-weight:750}.study-example-help-btn:disabled{opacity:.7;cursor:default}.study-example-help-choices{width:100%;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;animation:study-help-choices-in .3s ease-out both}.study-example-help-choices span{min-width:0;padding:9px 10px;border:1px solid var(--border-color);border-radius:10px;background:var(--bg-lightest);color:var(--text-primary);font-size:.94rem;font-weight:650;overflow-wrap:anywhere;-webkit-user-select:text;user-select:text}@keyframes study-help-choices-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.study-options-grid{display:grid;gap:15px;width:100%}.study-option-btn{width:100%;padding:15px 20px;border:2px solid color-mix(in srgb,var(--border-color) 80%,transparent);border-radius:10px;background:var(--bg-lightest);color:var(--text-primary);font-size:1.1rem;font-weight:600;text-transform:capitalize;cursor:pointer;transition:all .2s ease;white-space:normal;line-height:1.35;-webkit-user-select:none;user-select:none}.study-option-btn:hover{border-color:var(--accent-primary);color:var(--accent-primary)}.study-option-btn.correct{background:#d4edda;border-color:#28a745;color:#155724}.study-option-btn.incorrect{background:#f8d7da;border-color:#dc3545;color:#721c24}.study-audio-card{display:flex;flex-direction:column;align-items:center;gap:20px}.study-audio-card p{margin:0;color:var(--text-secondary);font-style:italic}.study-big-audio-btn{width:100px;height:100px;border:none;border-radius:50%;background:var(--accent-primary);color:var(--text-on-accent);display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 4px 15px #0003;-webkit-tap-highlight-color:transparent}.study-big-audio-btn:hover{background:var(--accent-primary-hover);transform:scale(1.05)}.study-input-container{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;margin-top:26px;padding-top:4px}.study-input{width:min(320px,100%);min-height:52px;padding:12px 18px;border:2px solid #ddd;border-radius:12px;font-size:1.1rem;font-weight:600;text-align:center;transition:border-color .2s ease,box-shadow .2s ease;background:var(--bg-secondary);color:var(--text-primary)}.study-input:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent-primary) 14%,transparent)}.study-input::placeholder{color:var(--text-secondary);text-align:center}.study-input.is-success{border-color:#28a745}.study-input.is-error{border-color:#dc3545}.study-check-btn,.study-close-session-btn,.study-quit-confirm{border:none;background:var(--accent-primary);color:var(--text-on-accent);font-weight:700;cursor:pointer}.study-check-btn{min-height:52px;padding:12px 28px;border-radius:12px;font-size:1.05rem;box-shadow:0 10px 22px color-mix(in srgb,var(--accent-primary) 20%,transparent);transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease}.study-check-btn:hover:not(:disabled){background:var(--accent-primary-hover);transform:translateY(-1px)}.study-check-btn:disabled{opacity:.72;box-shadow:none;cursor:default}.study-feedback{min-height:28px;margin-top:18px;font-weight:700;line-height:1.5}.study-feedback.success{color:#28a745}.study-feedback.error,.study-inline-error{color:#dc3545}.study-gap{display:inline-block;padding:0 2px;font-weight:700;color:var(--accent-primary)}.study-final-card{text-align:center}.study-final-card h2{margin-top:0}.study-saving-spinner{width:42px;height:42px;margin:20px auto 0;border:4px solid color-mix(in srgb,var(--accent-primary) 16%,transparent);border-top-color:var(--accent-primary);border-radius:50%;animation:study-spin .8s linear infinite}.study-quit-overlay{position:fixed;inset:0;z-index:2101;display:flex;align-items:center;justify-content:center;background:#00000073;opacity:0;pointer-events:none;transition:opacity .25s ease}.study-quit-overlay.is-open{opacity:1;pointer-events:auto}.study-quit-modal{width:min(92vw,360px);padding:24px;border-radius:16px;background:var(--bg-secondary);box-shadow:var(--card-shadow)}.study-quit-modal h3{margin-top:0}.study-quit-actions{display:flex;gap:12px;justify-content:flex-end;margin-top:20px}.study-quit-cancel,.study-quit-confirm{padding:10px 16px;border-radius:10px}.study-quit-cancel{border:1px solid var(--border-color);background:var(--bg-lightest);color:var(--text-primary);cursor:pointer}.fade-in{opacity:0;transform:translateY(12px) scale(.985);animation:study-slide-in .38s cubic-bezier(.22,1,.36,1) forwards}.fade-out{opacity:0;transform:translateY(-10px) scale(.985);transition:opacity .28s ease,transform .28s cubic-bezier(.4,0,1,1)}.study-quiz-container .fade-in{will-change:opacity,transform}.transition-primary{animation-delay:0ms;transition-delay:0ms}.transition-secondary{animation-delay:70ms;transition-delay:40ms}.transition-tertiary{animation-delay:.13s;transition-delay:80ms}.pulse{animation:study-btn-pulse 1.5s infinite}@keyframes study-stack-slide{0%{transform:translate(0)}to{transform:translateY(8px)}}@keyframes study-fly-left{0%{transform:translate(-80px,-60px) rotate(-15deg) scale(1.1);opacity:0}35%{opacity:1}50%{transform:translate(0) rotate(0) scale(1);opacity:1}50.1%,to{opacity:0}}@keyframes study-fly-right{0%{transform:translate(80px,-60px) rotate(15deg) scale(1.1);opacity:0}35%{opacity:1}50%{transform:translate(0) rotate(0) scale(1);opacity:1}50.1%,to{opacity:0}}@keyframes study-card-fade{0%{opacity:1;transform:translate(0)}to{opacity:0;transform:translateY(6px)}}@keyframes study-text-pulse{0%,to{opacity:.7}50%{opacity:1}}@keyframes study-fly-up{to{opacity:1;transform:translateY(0)}}@keyframes study-spin{to{transform:rotate(360deg)}}@keyframes study-match-shake{0%,to{transform:translate(0)}20%{transform:translate(-4px)}40%{transform:translate(4px)}60%{transform:translate(-3px)}80%{transform:translate(3px)}}@keyframes study-flashcard-shake{0%,to{transform:translate(0)}20%{transform:translate(-6px)}40%{transform:translate(6px)}60%{transform:translate(-4px)}80%{transform:translate(4px)}}@keyframes study-slide-in{to{opacity:1;transform:translateY(0) scale(1)}}@keyframes study-btn-pulse{0%{box-shadow:0 0 color-mix(in srgb,var(--accent-primary) 70%,transparent)}to{box-shadow:0 0 0 0 transparent}}@media(max-width:600px){.study-modal-shell{width:100%;height:calc(100% - 12px);border-top-left-radius:18px;border-top-right-radius:18px;transform:translateY(100%)}.study-modal-overlay.is-open .study-modal-shell{transform:translateY(0)}.study-modal-header{display:flex;flex-direction:column;gap:10px;padding:10px 15px}.study-header-left{display:none}.study-header-right{width:100%;justify-content:space-between;gap:12px}.study-session-progress{min-width:0;width:auto;flex:1}.study-modal-body-scroll{padding:18px 16px 24px}.study-next-sticky-footer{padding:8px 12px 10px}.study-quiz-container{padding:4px 0 12px}.study-complete-view{gap:12px;padding:4px 0 12px}.study-complete-row{padding:12px 10px}.study-complete-term{font-size:.94rem}.study-complete-delta{font-size:.98rem}.study-question-card{padding:26px 18px;margin-bottom:20px}.study-question-text,.study-example-box{font-size:1.12rem;line-height:1.6}.study-input{width:100%;min-width:0}.study-check-btn{width:100%}.study-input-container{margin-top:22px}.study-review-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.study-review-grid.has-odd-tail .study-flashcard-container:last-child{grid-column:1 / -1;justify-self:center;width:calc(50% - 6px)}.study-flashcard-container{width:100%;height:auto;aspect-ratio:.96 / 1}.study-flashcard-front,.study-flashcard-back{padding:14px 10px}.study-flashcard-front h3{font-size:.94rem;line-height:1.14}.study-flashcard-translation{font-size:.74rem;line-height:1.18}.study-flashcard-back p{font-size:.84rem;line-height:1.24}.study-match-board.is-definition-mode .study-match-row{grid-template-columns:minmax(0,138px) minmax(0,1fr);gap:12px}.study-match-board.is-translation-mode .study-match-row{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:12px}.study-match-card-main{font-size:.98rem}.study-match-definition-card{min-height:88px;padding:14px}.study-match-stage.is-board-active .study-match-word-card{height:82px;min-height:82px;padding:14px 12px}.study-match-board.is-definition-mode .study-match-word-card{height:auto;min-height:96px;padding:14px 12px}.study-match-definition-card{height:82px;min-height:82px;padding:12px 10px}.study-match-board.is-definition-mode .study-match-definition-card{height:auto;min-height:110px;padding:14px 12px}.study-match-definition-card .study-match-card-main{font-size:.8rem;line-height:1.22}.study-match-board.is-definition-mode .study-match-definition-card .study-match-card-main{font-size:.84rem;line-height:1.26}.study-match-word-card .study-match-card-main{font-size:.82rem;line-height:1.14}}.points-award-overlay{position:fixed;top:max(18px,env(safe-area-inset-top));left:50%;z-index:2147483647;display:flex;align-items:baseline;gap:12px;width:max-content;max-width:calc(100vw - 24px);padding:8px 10px;border:0;background:transparent;cursor:pointer;pointer-events:auto;transform:translate(-50%,calc(-100% - 70px));opacity:0;will-change:transform,opacity;-webkit-tap-highlight-color:transparent}.points-award-overlay:before{content:"";position:absolute;inset:-12px -20px;z-index:-1;border-radius:22px;background:color-mix(in srgb,var(--bg-primary) 52%,transparent);backdrop-filter:blur(14px) brightness(.72) saturate(.72);-webkit-backdrop-filter:blur(14px) brightness(.72) saturate(.72);mask-image:radial-gradient(ellipse at center,#000 54%,transparent 100%);-webkit-mask-image:radial-gradient(ellipse at center,#000 54%,transparent 100%)}.points-award-total{color:var(--accent-primary);font-size:clamp(1.55rem,6vw,2.25rem);font-weight:900;line-height:1;letter-spacing:-.04em;text-shadow:0 1px 0 var(--bg-primary),1px 0 0 var(--bg-primary),0 -1px 0 var(--bg-primary),-1px 0 0 var(--bg-primary),0 4px 16px color-mix(in srgb,var(--accent-primary) 38%,transparent)}.points-award-gain{color:#22c55e;font-size:clamp(.95rem,3.8vw,1.25rem);font-weight:850;opacity:0;transform:translateY(8px);text-shadow:0 1px 0 var(--bg-primary),1px 0 0 var(--bg-primary),0 -1px 0 var(--bg-primary),-1px 0 0 var(--bg-primary)}.points-award-overlay.is-entering,.points-award-overlay.is-counting{opacity:1;transform:translate(-50%);transition:transform .95s cubic-bezier(.16,1,.3,1),opacity .4s ease}.points-award-overlay.is-entering .points-award-gain,.points-award-overlay.is-counting .points-award-gain{animation:points-gain-rise 2.2s .62s ease-out both}.points-award-overlay.is-exiting{opacity:0;transform:translate(-50%,calc(-100% - 70px));transition:transform .72s cubic-bezier(.7,0,.84,0),opacity .42s ease .12s}.points-award-overlay:focus-visible{outline:3px solid color-mix(in srgb,var(--accent-primary) 40%,transparent);outline-offset:3px;border-radius:12px}@keyframes points-gain-rise{0%{opacity:0;transform:translateY(9px)}25%{opacity:1;transform:translateY(0)}72%{opacity:1;transform:translateY(-5px)}to{opacity:0;transform:translateY(-22px)}}.rank-change-overlay{position:fixed;top:max(22px,env(safe-area-inset-top));left:50%;z-index:2147483647;display:flex;align-items:center;justify-content:center;gap:0;min-width:160px;padding:10px 18px;border:0;border-radius:18px;background:color-mix(in srgb,var(--bg-primary) 82%,transparent);box-shadow:0 12px 30px #0f172a38;backdrop-filter:blur(16px) saturate(1.15);-webkit-backdrop-filter:blur(16px) saturate(1.15);cursor:pointer;opacity:0;transform:translate(-50%,-22px) scale(.94);overflow:hidden;isolation:isolate;-webkit-tap-highlight-color:transparent}.rank-change-overlay.is-rank-start,.rank-change-overlay.is-rank-arrow,.rank-change-overlay.is-rank-complete{opacity:1;transform:translate(-50%) scale(1);transition:opacity .5s ease,transform .85s cubic-bezier(.16,1,.3,1)}.rank-change-overlay.is-rank-exiting{opacity:0;transform:translate(-50%,-18px) scale(.97);transition:opacity .55s ease,transform .7s ease}.rank-change-position{position:relative;color:var(--text-primary);font-size:clamp(1.25rem,5vw,1.65rem);font-weight:900;line-height:1;letter-spacing:-.04em;white-space:nowrap}.rank-change-position.is-previous{width:58px;transform:translate(0);text-align:center;transition:color .65s ease,opacity .65s ease,transform 1.15s cubic-bezier(.16,1,.3,1)}.rank-change-arrow{width:42px;margin:0 12px;opacity:1;transform:scaleX(1);transform-origin:center;transition:width 1.15s cubic-bezier(.16,1,.3,1),margin 1.15s cubic-bezier(.16,1,.3,1),opacity .48s ease,transform 1.15s cubic-bezier(.16,1,.3,1)}.rank-change-arrow svg{display:block;width:42px;height:22px;overflow:visible}.rank-change-arrow path{fill:none;stroke:var(--accent-primary);stroke-width:3;stroke-linecap:round;stroke-linejoin:round}.rank-change-position.is-current{width:58px;max-width:58px;opacity:0;transform:scale(.9);text-align:center;transition:opacity .62s ease .22s,transform .9s cubic-bezier(.16,1,.3,1)}.rank-change-overlay.is-rank-arrow .rank-change-position.is-previous,.rank-change-overlay.is-rank-complete .rank-change-position.is-previous{transform:translate(0)}.rank-change-overlay.is-rank-arrow .rank-change-arrow,.rank-change-overlay.is-rank-complete .rank-change-arrow{width:42px;margin:0 12px;opacity:1;transform:scaleX(1)}.rank-change-overlay.is-rank-arrow .rank-change-position.is-current,.rank-change-overlay.is-rank-complete .rank-change-position.is-current{max-width:58px;opacity:1;transform:scale(1)}.rank-change-overlay.is-rank-arrow .rank-change-position.is-current{max-width:58px;opacity:0;transform:scale(.9)}.rank-change-overlay.is-rank-complete .rank-change-position.is-current{color:var(--accent-primary);text-shadow:0 0 18px color-mix(in srgb,var(--accent-primary) 38%,transparent)}.rank-change-sweep{position:absolute;top:0;bottom:0;left:-34%;z-index:3;width:28%;opacity:0;background:linear-gradient(105deg,transparent 5%,rgb(255 255 255 / 20%) 28%,rgb(255 255 255 / 95%) 50%,rgb(255 255 255 / 24%) 72%,transparent 95%);filter:blur(1px);transform:skew(-16deg);pointer-events:none}.rank-change-overlay.is-rank-arrow .rank-change-sweep{animation:rank-change-sweep 1.55s .45s cubic-bezier(.45,0,.2,1) both}.rank-change-overlay.is-rank-complete .rank-change-sweep{opacity:0}.rank-change-overlay.is-rank-complete .rank-change-position.is-previous{color:var(--text-secondary);opacity:.42}.rank-change-shine{position:absolute;inset:-8px -12px;opacity:0;background:linear-gradient(110deg,transparent 25%,rgb(255 255 255 / 90%) 48%,transparent 68%);transform:translate(-130%);pointer-events:none}.rank-change-overlay.is-rank-complete .rank-change-shine{animation:rank-change-twinkle 1.15s .15s ease-out both}@keyframes rank-change-twinkle{0%{opacity:0;transform:translate(-130%)}24%{opacity:.85}65%{opacity:.55}to{opacity:0;transform:translate(130%)}}@keyframes rank-change-sweep{0%{left:-34%;opacity:0}12%{opacity:.9}78%{opacity:.8}to{left:112%;opacity:0}}@media(prefers-reduced-motion:reduce){.points-award-overlay,.points-award-gain,.rank-change-overlay,.rank-change-position,.rank-change-arrow{transition-duration:.08s!important;animation-duration:.16s!important}}.onboarding-overlay{position:fixed;inset:0;z-index:9000;display:flex;align-items:center;justify-content:center;padding:18px;background:#0000008f;backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px);opacity:1;transition:opacity .22s ease,backdrop-filter .22s ease,-webkit-backdrop-filter .22s ease}.onboarding-overlay.is-closing{opacity:0;backdrop-filter:blur(0);-webkit-backdrop-filter:blur(0);pointer-events:none}.onboarding-overlay.is-closing .onboarding-modal{transform:scale(.96) translateY(8px);opacity:0}.onboarding-modal{width:min(100%,420px);max-height:min(720px,calc(100vh - 36px));overflow:hidden;border:1px solid var(--border-color);border-radius:16px;background:var(--bg-secondary);color:var(--text-primary);box-shadow:0 24px 70px #00000057;opacity:1;transform:scale(1) translateY(0);transition:opacity .22s ease,transform .22s ease}.onboarding-progress{height:5px;background:var(--bg-lightest)}.onboarding-progress span{display:block;height:100%;background:var(--accent-primary);transition:width .28s ease}.onboarding-body{padding:28px;overflow:hidden}.onboarding-step-frame{will-change:opacity,transform}.onboarding-step-frame.is-entering{animation:onboarding-step-enter .24s ease both}.onboarding-step-frame.is-leaving{animation:onboarding-step-leave .18s ease both;pointer-events:none}.onboarding-step{display:flex;flex-direction:column;gap:18px}.onboarding-kicker{margin:0;color:var(--accent-primary);font-size:.78rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.onboarding-step h2{margin:0;color:var(--text-primary);font-size:1.45rem;line-height:1.2}.onboarding-select{border-radius:8px}.onboarding-toggle-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0;color:var(--text-primary);font-weight:600}.onboarding-level-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.onboarding-level-btn{min-height:70px;padding:12px;border:1px solid var(--border-color);border-radius:8px;background:var(--bg-primary);color:var(--text-primary);cursor:pointer;text-align:left;transition:border-color .18s ease,background-color .18s ease,transform .18s ease}.onboarding-level-btn span{display:block;font-size:1.2rem;font-weight:800;line-height:1.1}.onboarding-level-btn small{display:block;margin-top:5px;color:var(--text-secondary);font-size:.78rem;line-height:1.2}.onboarding-level-btn.is-selected{border-color:var(--accent-primary);background:color-mix(in srgb,var(--accent-primary) 12%,var(--bg-primary) 88%);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--accent-primary) 45%,transparent)}.onboarding-level-btn:active:not(:disabled){transform:scale(.98)}.onboarding-helper{margin:-6px 0 0;color:var(--text-secondary);font-size:.95rem;line-height:1.45}.onboarding-instruction-list{display:flex;flex-direction:column;gap:8px;color:var(--text-secondary);font-size:.92rem;line-height:1.4}.onboarding-instruction-list span:not(.onboarding-plus-icon){position:relative;padding-left:18px}.onboarding-instruction-list span:not(.onboarding-plus-icon):before{content:"";position:absolute;left:0;top:.55em;width:6px;height:6px;border-radius:50%;background:var(--accent-primary)}.onboarding-plus-icon{display:inline-flex;align-items:center;justify-content:center;position:relative;width:20px;height:20px;margin:0 3px;border-radius:50%;border:none;background:var(--accent-primary);color:#fff;vertical-align:middle}.onboarding-plus-icon:before{content:"+";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);color:#fff;font-size:16px;font-weight:400;line-height:1}.onboarding-practice-text{min-height:116px;padding:20px;border:1px solid var(--border-color);border-radius:8px;background:var(--bg-primary);font-size:1.12rem;line-height:1.8}.onboarding-practice-text p{margin:0}.onboarding-practice-text .interactive-text-container{min-height:72px}.onboarding-ready-panel{padding:14px;border:1px solid var(--border-color);border-radius:8px;background:var(--bg-primary);color:var(--text-primary);font-size:.98rem;line-height:1.45}.onboarding-ready-instruction{padding:12px 14px;border-radius:10px;background:color-mix(in srgb,var(--accent-primary) 14%,var(--bg-primary) 86%);color:var(--text-primary);font-size:.96rem;font-weight:700;line-height:1.4}.onboarding-topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.onboarding-topic-item{min-height:58px;padding:10px 12px;border:1px solid color-mix(in srgb,var(--accent-primary) 18%,var(--border-color) 82%);border-radius:8px;background:var(--bg-secondary);appearance:none;font:inherit;color:inherit;text-align:left;cursor:pointer;transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease,background-color .22s ease}.onboarding-topic-btn:hover:not(:disabled),.onboarding-topic-btn:focus-visible{border-color:color-mix(in srgb,var(--accent-primary) 56%,var(--border-color) 44%);background:color-mix(in srgb,var(--accent-primary) 12%,var(--bg-secondary) 88%);box-shadow:0 10px 24px #0000001f;outline:none;transform:translateY(-1px)}.onboarding-topic-btn:active:not(:disabled){transform:scale(.98)}.onboarding-topic-btn.is-demo-active,.onboarding-topic-btn.is-pulsing{border-color:color-mix(in srgb,var(--accent-primary) 68%,var(--border-color) 32%);background:color-mix(in srgb,var(--accent-primary) 13%,var(--bg-secondary) 87%)}.onboarding-topic-btn.is-demo-active{animation:onboarding-topic-demo-pulse .72s ease-in-out 1}.onboarding-topic-btn.is-pulsing{animation:onboarding-topic-breathe 4s ease-in-out infinite}.onboarding-topic-btn:disabled{cursor:wait;opacity:.7}.onboarding-topic-btn.is-loading{border-color:color-mix(in srgb,var(--accent-primary) 58%,var(--border-color) 42%);background:color-mix(in srgb,var(--accent-primary) 10%,var(--bg-secondary) 90%);box-shadow:0 10px 24px #0000001f}.onboarding-topic-item span,.onboarding-topic-item strong{display:block;overflow-wrap:anywhere}.onboarding-topic-item span{margin-bottom:4px;color:var(--text-secondary);font-size:.76rem;font-weight:800;line-height:1.15;text-transform:uppercase}.onboarding-topic-item strong{color:var(--text-primary);font-size:.95rem;line-height:1.2}.onboarding-ready-helper{margin-top:-4px;text-align:center}.onboarding-tap-coachmark{position:fixed;width:62px;height:62px;margin-left:-31px;margin-top:-31px;border:none;background:transparent;padding:0;z-index:10050;pointer-events:none;animation:tap-coachmark-flytap 1.25s ease-out both}.tap-coachmark-hand{position:absolute;left:12px;top:6px;width:38px;height:46px;display:inline-flex;align-items:center;justify-content:center;animation:tap-hand-press 1.25s ease-in-out 1}.tap-coachmark-hand svg{width:100%;height:100%;fill:#fff;stroke:var(--accent-primary);stroke-width:1.35;stroke-linejoin:round;stroke-linecap:round;filter:drop-shadow(0 6px 12px rgba(0,0,0,.35))}.tap-coachmark-hand .tap-hand-crease{fill:none;stroke:#11182738;stroke-width:1.2;stroke-linecap:round}.tap-coachmark-ripple{position:absolute;inset:0;border:2px solid rgba(255,255,255,.92);border-radius:999px;animation:tap-ripple 1.25s ease-out 1}.onboarding-primary-btn{width:100%;min-height:48px;padding:12px 16px;border:none;border-radius:8px;background:var(--accent-primary);color:var(--text-on-accent);font-size:1rem;font-weight:800;cursor:pointer;transition:filter .18s ease,transform .18s ease,opacity .18s ease}.onboarding-primary-btn:disabled,.onboarding-level-btn:disabled{cursor:not-allowed;opacity:.58}.onboarding-primary-btn.is-pending:not(:disabled){opacity:.58}.onboarding-primary-btn:active:not(:disabled){transform:scale(.98)}@keyframes onboarding-step-enter{0%{opacity:0;transform:translate(22px)}to{opacity:1;transform:translate(0)}}@keyframes onboarding-topic-demo-pulse{0%{transform:scale(1);box-shadow:0 0 #0000}40%{transform:scale(1.03);box-shadow:0 0 0 10px color-mix(in srgb,var(--accent-primary) 12%,transparent)}to{transform:scale(1);box-shadow:0 0 #0000}}@keyframes onboarding-topic-breathe{0%,70%,to{transform:translateY(0);box-shadow:0 0 color-mix(in srgb,var(--accent-primary) 0%,transparent)}18%{transform:translateY(-1px);box-shadow:0 0 0 8px color-mix(in srgb,var(--accent-primary) 14%,transparent)}}@keyframes tap-hand-press{0%,to{transform:translateY(0) scale(1)}42%{transform:translateY(8px) scale(.96)}62%{transform:translateY(8px) scale(.96)}}@keyframes tap-ripple{0%{transform:scale(.3);opacity:.9}to{transform:scale(1);opacity:0}}@keyframes tap-coachmark-flytap{0%{transform:translateY(16px);opacity:0}28%{opacity:1}58%{transform:translateY(0);opacity:1}to{transform:translateY(0);opacity:0}}@keyframes onboarding-step-leave{0%{opacity:1;transform:translate(0)}to{opacity:0;transform:translate(-18px)}}@media(max-width:460px){.onboarding-overlay{align-items:center;padding:12px}.onboarding-modal{width:100%;border-radius:16px 16px 12px 12px}.onboarding-body{padding:24px 20px 20px}}