@font-face{font-family:Roboto Flex;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/RobotoFlex-Regular.ttf) format("truetype")}@font-face{font-family:Noto Sans TC;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/NotoSansTC-Regular.ttf) format("truetype")}@font-face{font-family:Noto Sans TC;font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/NotoSansTC-Medium.ttf) format("truetype")}@font-face{font-family:Noto Sans TC;font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/NotoSansTC-Bold.ttf) format("truetype")}@font-face{font-family:Material Symbols Outlined;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/MaterialSymbolsOutlined-Regular.ttf) format("truetype")}.material-symbols-outlined{font-family:Material Symbols 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#22323e;--md-sys-color-secondary-container: #384955;--md-sys-color-on-secondary-container: #d3e5f5;--md-sys-color-error: #FFB4AB;--md-sys-color-on-error: #690005;--md-sys-color-background: #101416;--md-sys-color-on-background: #e1e2e5;--md-sys-color-surface: #101416;--md-sys-color-on-surface: #e1e2e5;--md-sys-color-surface-variant: #41484d;--md-sys-color-on-surface-variant: #c1c7ce;--md-sys-color-outline: #8b9298;--md-sys-color-surface-container-highest: #33383c;--md-sys-color-scrim: #000000;--md-sys-color-tertiary: #cfc1e8;--md-sys-color-on-tertiary-container: #201634;--md-sys-color-tertiary-container: #4c4062;--md-sys-color-correct: #9cffb8;--md-sys-color-on-correct-container: #d3f5e0;--md-sys-color-correct-container: #22323e;--md-sys-color-incorrect: #ffb4ab;--md-sys-color-on-incorrect-container: #ffdad6;--md-sys-color-incorrect-container: #410002;--tone1-bg-dark: #5c1d24;--tone1-fg-dark: #ffb3b8;--tone2-bg-dark: #5a3200;--tone2-fg-dark: #ffd28e;--tone3-bg-dark: 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0}}.app-bar{display:flex;align-items:center;position:absolute;top:12px;left:24px;right:24px;height:48px;gap:8px}#app-icon{width:60px;height:60px;margin-right:8px;display:block;border-radius:50%;overflow:hidden;object-fit:cover;background-color:var(--md-sys-color-primary-container)}.slot-badge{position:absolute;left:2px;top:2px;background:#0000000f;color:var(--md-sys-color-outline);padding:2px 4px;border-radius:8px;font-size:10px;z-index:5}.canvas-controls-outside .button.icon{width:36px;height:36px;padding:6px;display:flex;align-items:center;justify-content:center}.tab-content{margin-top:56px}.display-large{font:var(--md-sys-typescale-display-large-weight) var(--md-sys-typescale-display-large-size)/var(--md-sys-typescale-display-large-line-height) var(--md-sys-typescale-display-large-font)}.display-medium{font:var(--md-sys-typescale-display-medium-weight) var(--md-sys-typescale-display-medium-size)/var(--md-sys-typescale-display-medium-line-height) 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var(--md-sys-color-outline)}.button.text{background-color:transparent;color:var(--md-sys-color-primary)}.button.outlined.selected{background-color:var(--md-sys-color-surface-variant);border-color:var(--md-sys-color-primary);color:var(--md-sys-color-primary)}.bonus-info-bubble{position:fixed;z-index:1000;max-width:320px;min-width:220px;padding:12px 14px;border-radius:16px;background-color:var(--md-sys-color-surface);color:var(--md-sys-color-on-surface);box-shadow:0 16px 32px #0000003d;border:1px solid rgba(255,255,255,.08);opacity:0;pointer-events:none;transform:translate(-50%,-8px) scale(.96);transition:opacity .18s ease,transform .18s ease;white-space:pre-wrap}.bonus-info-bubble.visible{opacity:1;pointer-events:auto;transform:translate(-50%,-12px) scale(1)}.bonus-info-bubble-title{font-weight:600;margin-bottom:8px}.bonus-info-bubble-body{font-size:.95rem;line-height:1.45}.bonus-info-bubble-body strong{display:block;margin-top:8px;color:var(--md-sys-color-secondary)}.button:disabled{background-color:#0000001f;color:#00000061;cursor:not-allowed}html.dark .button:disabled{background-color:#ffffff1f;color:#ffffff61}.icon-button{background:none;border:none;padding:8px;border-radius:50%;color:var(--md-sys-color-on-surface-variant);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;transition:background-color .2s}.icon-button:hover{background-color:#0000000d}html.dark .icon-button:hover{background-color:#ffffff0d}.button.icon{background:none;border:none;padding:8px;border-radius:50%;color:var(--md-sys-color-on-surface-variant);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;transition:background-color .2s}.button.icon:hover{background-color:#0000000d}html.dark .button.icon:hover{background-color:#ffffff0d}.input-area{position:relative}.zhuyin-input{width:100%;padding:16px;font-size:24px;text-align:center;border:1px solid var(--md-sys-color-outline);background-color:var(--md-sys-color-surface);color:var(--md-sys-color-on-surface);border-radius:4px;transition:border-color .2s,border-width .2s,padding .2s;outline:none}.zhuyin-input:focus{border-color:var(--md-sys-color-primary);border-width:2px;padding:15px}.zhuyin-input.correct{border-color:var(--md-sys-color-correct)}.zhuyin-input.incorrect{border-color:var(--md-sys-color-error)}.feedback-indicator{position:absolute;right:16px;top:50%;transform:translateY(-50%);font-size:28px}.dialog-scrim{position:fixed;inset:0;background-color:#0006;display:flex;align-items:center;justify-content:center;z-index:100;opacity:0;visibility:hidden;transition:opacity .3s,visibility 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4px;border-radius:4px;white-space:normal;color:inherit}.tone-1,.tone-legend-1{background-color:var(--tone1-bg-light);color:var(--tone1-fg-light)}.tone-2,.tone-legend-2{background-color:var(--tone2-bg-light);color:var(--tone2-fg-light)}.tone-3,.tone-legend-3{background-color:var(--tone3-bg-light);color:var(--tone3-fg-light)}.tone-4,.tone-legend-4{background-color:var(--tone4-bg-light);color:var(--tone4-fg-light)}.tone-5,.tone-legend-5{background-color:var(--tone5-bg-light);color:var(--tone5-fg-light)}html.dark .tone-1,[data-theme=dark] .tone-1,html.dark .tone-legend-1,[data-theme=dark] .tone-legend-1{background-color:var(--tone1-bg-dark);color:var(--tone1-fg-dark)}html.dark .tone-2,[data-theme=dark] .tone-2,html.dark .tone-legend-2,[data-theme=dark] .tone-legend-2{background-color:var(--tone2-bg-dark);color:var(--tone2-fg-dark)}html.dark .tone-3,[data-theme=dark] .tone-3,html.dark .tone-legend-3,[data-theme=dark] .tone-legend-3{background-color:var(--tone3-bg-dark);color:var(--tone3-fg-dark)}html.dark .tone-4,[data-theme=dark] .tone-4,html.dark .tone-legend-4,[data-theme=dark] .tone-legend-4{background-color:var(--tone4-bg-dark);color:var(--tone4-fg-dark)}html.dark .tone-5,[data-theme=dark] .tone-5,html.dark .tone-legend-5,[data-theme=dark] .tone-legend-5{background-color:var(--tone5-bg-dark);color:var(--tone5-fg-dark)}#chapter-preview-legend{display:flex;flex-wrap:wrap;gap:10px;font-size:.85rem;color:var(--md-sys-color-on-surface-variant);padding:0 4px}.chapter-preview-legend.hidden{display:none}.chapter-preview-legend-item{display:flex;align-items:center;gap:6px;padding:6px 8px;border-radius:12px;background-color:var(--md-sys-color-surface-container-highest);color:var(--md-sys-color-on-surface);border:1px solid var(--md-sys-color-outline)}.chapter-preview-legend-box{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:8px;font-weight:700;font-size:.75rem;color:var(--md-sys-color-on-surface);border:1px solid rgba(0,0,0,.08)}.chapter-preview-legend-label{color:var(--md-sys-color-on-surface)}#tip-zhuyin{background-color:var(--md-sys-color-surface-variant);color:var(--md-sys-color-on-surface-variant);padding:8px;border-radius:8px;align-self:center}.theme-toggle-container{display:flex;align-items:center;gap:8px;color:var(--md-sys-color-on-surface-variant)}.switch{position:relative;display:inline-block;width:52px;height:32px}.switch input{opacity:0;width:0;height:0}.slider{position:absolute;cursor:pointer;inset:0;background-color:var(--md-sys-color-surface-variant);border-radius:16px;transition:.3s}.slider:before{position:absolute;content:"";height:24px;width:24px;left:4px;bottom:4px;background-color:var(--md-sys-color-outline);border-radius:50%;transition:.3s}input:checked+.slider{background-color:var(--md-sys-color-primary)}input:checked+.slider:before{transform:translate(20px);background-color:var(--md-sys-color-on-primary)}.level-select-container,.mandarin-select-container{display:flex;flex-direction:column;align-items:center;gap:20px;max-width:420px;margin:24px auto}.select-wrapper{position:relative;width:100%}.select-label{position:absolute;top:-12px;left:12px;background-color:var(--md-sys-color-surface);padding:0 4px;color:var(--md-sys-color-primary);z-index:10;font-size:12px}.level-select{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:56px;padding:0 16px;border-radius:4px;border:1px solid var(--md-sys-color-outline);background-color:var(--md-sys-color-surface);color:var(--md-sys-color-on-surface);cursor:pointer;text-align:left}#part-select-button{display:flex;align-items:center;justify-content:space-between}.level-select:focus{border-color:var(--md-sys-color-primary);border-width:2px;padding-left:15px}.select-arrow{position:absolute;right:12px;top:16px;pointer-events:none;color:var(--md-sys-color-on-surface-variant)}.multiselect-dropdown{position:absolute;top:100%;left:0;right:0;background-color:var(--md-sys-color-surface-container-highest);border:1px solid var(--md-sys-color-outline);border-radius:4px;margin-top:4px;z-index:10;max-height:250px;overflow-y:auto;padding:8px 0}.multiselect-dropdown label{display:flex;align-items:center;padding:8px 16px;cursor:pointer;gap:12px}.multiselect-dropdown label:hover{background-color:#0000000d}html.dark .multiselect-dropdown label:hover{background-color:#ffffff0d}.multiselect-dropdown input[type=checkbox]{width:18px;height:18px;accent-color:var(--md-sys-color-primary)}.multiselect-divider{height:1px;background-color:var(--md-sys-color-outline);margin:8px 16px}.stats-bar{display:flex;justify-content:space-around;background-color:var(--md-sys-color-surface-variant);border-radius:16px;padding:12px;margin-bottom:24px}.stat-item{text-align:center;flex:1}.stat-correct{color:var(--md-sys-color-correct)}.stat-wrong{color:var(--md-sys-color-error)}.stat-remaining{color:var(--md-sys-color-tertiary)}.character-container{background-color:var(--md-sys-color-primary-container);color:var(--md-sys-color-on-primary-container);height:160px;border-radius:16px;display:flex;align-items:center;justify-content:center;margin-bottom:24px}.controls-container{display:flex;gap:8px;justify-content:center;align-items:center;margin-top:16px;flex-wrap:wrap}.game-over-card{background-color:var(--md-sys-color-tertiary-container);color:var(--md-sys-color-on-tertiary-container);padding:24px;border-radius:16px;margin-top:24px}.final-scores{margin:16px 0}.final-scores p{margin:4px 0}.test-header{margin-bottom:16px}.progress-bar-container{width:100%;background-color:var(--md-sys-color-surface-variant);border-radius:8px;height:8px;overflow:hidden;margin-top:4px}#progress-bar{width:0%;height:100%;background-color:var(--md-sys-color-primary);transition:width .3s ease-in-out}#part-title{margin-bottom:4px}#part-instruction{margin-bottom:24px;color:var(--md-sys-color-on-surface-variant)}.question-text-container{background-color:var(--md-sys-color-surface-container-highest);padding:16px;border-radius:12px;margin-bottom:16px;min-height:80px;text-align:left;line-height:1.6}.passage-text{font-style:italic;color:var(--md-sys-color-on-surface-variant);margin-bottom:1em}.options-container{display:grid;grid-template-columns:1fr;gap:12px}@media(min-width:600px){.options-container{grid-template-columns:1fr 1fr}}.option-button{width:100%;justify-content:flex-start;text-align:left;padding:12px 16px;height:auto;border-radius:12px}.option-button.selected{background-color:var(--md-sys-color-secondary-container);border-width:2px;border-color:var(--md-sys-color-primary)}.option-button.correct{background-color:var(--md-sys-color-correct-container);color:var(--md-sys-color-on-correct-container);border-color:var(--md-sys-color-correct);font-weight:700}.option-button.incorrect{background-color:var(--md-sys-color-incorrect-container);color:var(--md-sys-color-on-incorrect-container);border-color:var(--md-sys-color-incorrect)}.results-list{margin-top:24px;text-align:left;max-height:400px;overflow-y:auto;padding-right:10px}.result-part-header{margin-top:24px;border-bottom:1px solid var(--md-sys-color-outline);padding-bottom:8px}.result-item{padding:16px;border-bottom:1px solid var(--md-sys-color-surface-variant)}.result-item:last-child{border-bottom:none}.correct-answer{color:var(--md-sys-color-correct);font-weight:700}.wrong-answer{color:var(--md-sys-color-incorrect);font-weight:700;text-decoration:line-through}.explanation{margin-top:8px;padding:8px;background-color:var(--md-sys-color-surface-variant);color:var(--md-sys-color-on-surface-variant);border-radius:8px;font-size:13px}.timed-memory-box{background-color:var(--md-sys-color-surface-container-highest);color:var(--md-sys-color-on-surface);border-radius:28px;padding:32px;width:90%;max-width:500px;box-shadow:0 8px 10px 1px #00000024,0 3px 14px 2px #0000001f,0 5px 5px -3px #0003}.timer-bar-container{height:6px;width:100%;background-color:var(--md-sys-color-surface-variant);border-radius:3px;margin-top:24px;overflow:hidden}.timer-bar{height:100%;width:100%;background-color:var(--md-sys-color-tertiary);border-radius:3px;transform-origin:left}@keyframes shrink{0%{transform:scaleX(1)}to{transform:scaleX(0)}}.side-menu-scrim{position:fixed;inset:0;background-color:#0006;z-index:199}.side-menu{position:fixed;top:0;right:0;bottom:0;width:80%;max-width:300px;background-color:var(--md-sys-color-surface);box-shadow:0 8px 10px 1px #00000024,0 3px 14px 2px #0000001f,0 5px 5px -3px #0003;z-index:200;transform:translate(100%);transition:none;padding:24px;display:flex;flex-direction:column}.side-menu.visible{transition:transform .3s ease-in-out}.side-menu.visible{transform:translate(0)}.side-menu-header{display:flex;align-items:center;gap:12px;margin-bottom:24px}.sidebar-icon{font-size:28px;color:var(--md-sys-color-primary)}.side-menu-footer{margin-top:auto;padding-top:24px;border-top:1px solid var(--md-sys-color-outline)}.side-menu a{padding:16px;text-decoration:none;color:var(--md-sys-color-on-surface);border-radius:28px;display:flex;align-items:center;gap:16px;transition:background-color .2s}.side-menu a:hover,.side-menu a.active{background-color:var(--md-sys-color-surface-variant)}.fade-in{animation:fadeIn .5s ease-in-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}@keyframes incorrect-shake{0%,to{transform:translate(0)}25%{transform:translate(-5px)}75%{transform:translate(5px)}}.zhuyin-input.incorrect{animation:incorrect-shake .4s ease-in-out}#flash-overlay{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:0}#flash-overlay.flash-active{animation:flash-effect 1s ease-out}@keyframes flash-effect{0%{opacity:.7}to{opacity:0}}#emoji-overlay{position:fixed;inset:0;pointer-events:none;z-index:9999;overflow:hidden}.emoji-particle{position:absolute;font-size:24px;opacity:1;animation:emoji-firework 1.2s ease-out forwards}@keyframes emoji-firework{0%{transform:translate(0) scale(1);opacity:1}to{transform:translate(calc((var(--random-x) - .5) * 200px),calc((var(--random-y) - 1.2) * 200px)) scale(.5);opacity:0}}.option-button.incorrect{animation:incorrect-shake .4s ease-in-out}.practice-drawing-wrapper{display:flex;flex-direction:column;gap:5px;margin:0 auto;width:100%;max-width:525px}.canvas-and-controls-group{display:flex;gap:4px;align-items:center;width:100%;justify-content:center}.canvas-container{position:relative;flex-grow:1;min-width:0;max-height:325px;max-width:325px;border:2px solid var(--md-sys-color-outline);border-radius:12px;background:transparent;overflow:hidden}#drawing-canvas{width:100%;max-width:325px;height:auto;aspect-ratio:1 / 1;display:block;touch-action:none;cursor:crosshair;background:transparent}.canvas-controls-outside{display:flex;flex-direction:column;gap:8px;padding:4px;background:var(--md-sys-color-surface-container);border:1px solid var(--md-sys-color-outline);border-radius:12px;justify-content:flex-start;height:fit-content}.grid-selector-wrapper{position:relative}#grid-mode-button{position:relative;display:flex;align-items:center;justify-content:center;gap:1px}.dropdown-arrow{font-size:16px!important;opacity:.7}.grid-dropdown{position:absolute;top:100%;left:50%;transform:translate(-50%);background-color:var(--md-sys-color-surface-container-highest);border:1px solid var(--md-sys-color-outline);border-radius:8px;min-width:140px;z-index:10;box-shadow:0 4px 6px #0000001a;overflow:hidden;margin-top:4px}.grid-option{display:block;width:100%;padding:12px 16px;border:none;background:none;text-align:left;cursor:pointer;font-size:12px;color:var(--md-sys-color-on-surface);transition:background-color .2s;font-family:inherit}.grid-option:hover{background-color:var(--md-sys-color-surface-variant)}.grid-option:not(:last-child){border-bottom:1px solid var(--md-sys-color-outline-variant)}#grid-mode-select{padding:8px 12px;border:1px solid var(--md-sys-color-outline);border-radius:4px;background-color:var(--md-sys-color-surface);color:var(--md-sys-color-on-surface);cursor:pointer;font-size:12px;white-space:nowrap}.tiles-row{display:flex;gap:8px;overflow-x:auto;min-height:70px;background:#0000000d;border:1px solid var(--md-sys-color-outline-variant);border-radius:12px;padding:8px;justify-content:center;margin-top:4px}.drawing-tile{position:relative;width:60px;height:60px;border:1px solid var(--md-sys-color-outline);border-radius:4px;flex-shrink:0;background:transparent;display:flex;align-items:center;justify-content:center;overflow:hidden;cursor:pointer;transition:transform .2s,box-shadow .2s}.drawing-tile.active{border:2px solid var(--md-sys-color-primary);box-shadow:0 0 4px var(--md-sys-color-primary);transform:translateY(-2px)}.drawing-tile.saved-flash{animation:savedFlash .36s ease-in-out}@keyframes savedFlash{0%{box-shadow:0 0 #0000}50%{box-shadow:0 0 0 6px #0000000f}to{box-shadow:0 0 #0000}}:root:not(.dark) .drawing-tile{background:#fff}html.dark .drawing-tile{background:#000}.drawing-tile:hover{transform:scale(1.05);box-shadow:0 2px 8px #0003}html.dark .drawing-tile:hover{box-shadow:0 2px 8px #fff3}.drawing-tile img{width:100%;height:100%;object-fit:contain}.tile-preview{width:100%;height:100%;image-rendering:pixelated}.drawing-tile button{position:absolute;top:-5px;right:-5px;width:16px;height:16px;font-size:10px;background:var(--md-sys-color-error);color:#fff;border-radius:50%;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center}.grid-3-col{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px;margin-bottom:1rem}.grid-4-col{display:grid;grid-template-columns:1fr 1fr 1fr 1fr;gap:8px;margin-bottom:1rem}.button.grey{background-color:#757575;color:#fff}.button.blue{background-color:#2196f3;color:#fff}.button.light-blue{background-color:#03a9f4;color:#000}.summary-screen{display:flex;flex-direction:column;min-height:0;height:100%}.summary-list{flex:1 1 auto;overflow-y:auto;min-height:0;padding-right:4px;margin-top:8px;margin-bottom:12px}.summary-action-button{flex-shrink:0;margin-top:auto;width:100%}.summary-item{display:flex;justify-content:space-between;align-items:center;padding:12px;border-bottom:1px solid var(--md-sys-color-outline-variant)}.summary-item .char{font-size:1.5rem;font-family:Noto Sans TC}.badge{padding:4px 8px;border-radius:4px;font-size:.8rem;margin-left:5px}.badge.grey{background:#eee;color:#333}.badge.blue{background:#e3f2fd;color:#1565c0}.badge.light-blue{background:#e1f5fe;color:#0277bd}.emoji-particle{position:fixed;pointer-events:none;font-size:24px;opacity:1;z-index:9999;-webkit-user-select:none;user-select:none}.emoji-particle.directional{animation:emoji-burst-directional 1.2s cubic-bezier(.1,.8,.2,1) forwards}.emoji-particle.circular{animation:emoji-burst-circular 1.2s cubic-bezier(.2,.5,.3,1) forwards}@keyframes emoji-burst-directional{0%{transform:translate(-50%,-50%) scale(.5);opacity:1}to{transform:translate(calc(-50% + (var(--random-x) - .5) * 400px),calc(-50% + (var(--random-y) - .5) * 400px)) scale(1.5);opacity:0}}@keyframes emoji-burst-circular{0%{transform:translate(-50%,-50%) scale(.5);opacity:1}to{transform:translate(calc(-50% + cos(var(--angle)) * 150px * var(--radius-multiplier)),calc(-50% + sin(var(--angle)) * 150px * var(--radius-multiplier))) scale(1.2);opacity:0}}