:root{font-family:-apple-system,BlinkMacSystemFont,"Noto Sans TC","PingFang TC","Microsoft JhengHei",sans-serif;color-scheme:dark;--bg:#121212;--surface:#1e1e1e;--inset:#292929;--text:#f0f0f0;--muted:#b8bdc5;--line:#52565c;--accent:#8dbdff;--primary:#0757be;font-size:16px}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);line-height:1.55}body.light{color-scheme:light;--bg:#fff;--surface:#f3f5f7;--inset:#e7ebef;--text:#212529;--muted:#505963;--line:#737e88;--accent:#0757be}
button,select,input{font:inherit}button,a,select,input,summary{-webkit-tap-highlight-color:transparent}button,summary,select{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}button,a,select{border-radius:4px}button{border:1px solid transparent}a{color:var(--accent);text-underline-offset:3px}a:hover{text-decoration-thickness:2px}:is(button,a,select,input,summary):focus-visible{outline:3px solid var(--accent);outline-offset:3px}::selection{background:#8dbdff;color:#121212}[hidden]{display:none!important}h1,h2,h3,p{margin-top:0}h1{font-size:1.8rem;line-height:1.25;margin-bottom:0;font-weight:650}h2{font-size:1.22rem;line-height:1.4;margin-bottom:14px;font-weight:650}h3{font-size:1.15rem}p{margin-bottom:12px}.small{font-size:.875rem}.muted{color:var(--muted)}
.site-header{max-width:1440px;margin:auto;padding:26px 32px;display:flex;justify-content:space-between;align-items:center;gap:20px}.workspace{max-width:1440px;margin:auto;display:grid;grid-template-columns:minmax(0,1fr) 340px;align-items:start;padding:0 32px 24px;gap:28px}.main-panel{min-width:0}.guide{background:var(--surface);border-radius:6px;padding:24px;margin-bottom:24px}.section-heading{display:flex;align-items:baseline;justify-content:space-between;gap:16px}.section-heading h2{margin-bottom:8px}.section-heading span{font-size:.875rem;color:var(--muted)}.guide-controls{display:flex;align-items:flex-end;gap:12px;margin:18px 0 12px}.select-wrap{flex:1;min-width:0}label{display:block;font-size:.875rem;margin-bottom:6px}select{width:100%;min-height:46px;background:var(--bg);color:var(--text);border:1px solid var(--line);padding:8px 12px}.primary-button,.secondary-button{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:46px;padding:10px 16px;text-decoration:none;font-weight:600;white-space:nowrap}.primary-button{background:var(--primary);color:#fff}.primary-button:hover:not(:disabled){background:#064da8}.primary-button:active:not(:disabled){background:#04418f}.secondary-button{background:var(--inset);color:var(--text);border-color:var(--line)}.secondary-button:hover:not(:disabled){border-color:var(--accent)}.quiet-button{min-height:44px;padding:8px 12px;background:transparent;color:var(--text)}.quiet-button:hover:not(:disabled){background:var(--inset)}.full{width:100%;margin-bottom:10px}#guide-location{margin-bottom:4px}.guide>.muted{margin-bottom:0}
.camera-section>.section-heading{margin-bottom:8px}.camera-stage{position:relative;background:#0b0b0b;color:#f0f0f0;aspect-ratio:4/3;overflow:hidden;border:1px solid var(--line);border-radius:6px}.camera-stage video,.camera-stage canvas{position:absolute;inset:0;width:100%;height:100%;object-fit:contain}.camera-stage video{transform:scaleX(-1)}.camera-stage canvas{pointer-events:none}.camera-empty{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:24px}.camera-empty svg{color:#8dbdff;margin-bottom:22px}.camera-empty p{font-size:.95rem;color:#bbc1c8;margin-bottom:0}#framing{margin:10px 0 0;min-height:1.55em}
.control-panel{background:var(--surface);border-radius:6px;padding:24px}.control-panel>h2{margin-bottom:16px}#status{font-size:.875rem;min-height:2.9em;margin:2px 0 20px}#status.error{color:#ffb4ac}body.light #status.error{color:#a22521}progress{width:100%;height:8px;accent-color:var(--accent);margin-bottom:18px}.result-section{border-top:1px solid var(--line);padding-top:20px}.result-box{background:var(--inset);padding:22px 16px;border-radius:4px;min-height:125px;display:flex;flex-direction:column;justify-content:center;text-align:center}#result-word{font-size:1.65rem;font-weight:650;color:var(--accent);margin-bottom:8px;overflow-wrap:anywhere}#result-score{margin-bottom:0}#alternatives{list-style:none;padding:0;margin:12px 0;font-size:.875rem}#alternatives li{display:flex;justify-content:space-between;gap:16px;padding:4px 0;font-variant-numeric:tabular-nums}.history-section{border-top:1px solid var(--line);padding-top:18px;margin-top:22px}.history-section .section-heading{align-items:center}.history-section .section-heading h2{margin:0}#history{list-style:none;padding:0;margin:12px 0 8px;max-height:205px;overflow:auto;scrollbar-color:var(--line) var(--surface)}#history li{display:flex;justify-content:space-between;gap:12px;font-size:.875rem;padding:8px 0;border-bottom:1px solid var(--line);font-variant-numeric:tabular-nums}#history li:last-child{border-bottom:0}.settings{border-top:1px solid var(--line);margin-top:18px}.settings summary,footer summary{padding:12px 0;min-height:46px;font-size:.875rem}.settings label{display:flex;justify-content:space-between;margin-top:8px}.settings input{width:100%;accent-color:var(--accent);min-height:24px}.settings p{margin-top:8px;margin-bottom:0}footer{max-width:1440px;margin:0 auto;padding:0 32px 32px}footer details{border-top:1px solid var(--line)}.about-content{max-width:76ch;color:var(--muted);font-size:.875rem;padding-top:6px}.noscript{padding:20px}
@media(max-width:960px){.workspace{grid-template-columns:minmax(0,1fr) 290px;gap:18px;padding-inline:20px}.site-header{padding-inline:20px}.control-panel,.guide{padding:20px}.guide-controls{flex-direction:column;align-items:stretch}.guide-watch{width:100%}footer{padding-inline:20px}}
@media(max-width:720px){.site-header{padding:20px 16px}.site-header h1{font-size:1.5rem}.workspace{display:flex;flex-direction:column;padding:0 16px 24px;gap:20px}.main-panel,.control-panel{width:100%}.guide{padding:18px;margin-bottom:20px}.guide-controls{gap:10px}.camera-empty{padding:16px}.camera-empty svg{margin-bottom:12px;width:48px;height:36px}.camera-empty h3{margin-bottom:8px}.camera-empty p{font-size:.875rem}.control-panel{padding:20px}.camera-stage{aspect-ratio:4/3}footer{padding-inline:16px}.section-heading{gap:8px}.section-heading span{font-size:.8rem}.primary-button{white-space:normal}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}

.live-caption{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:10px;padding:12px 16px;background:var(--surface);border-radius:4px}.live-caption span{font-size:.875rem;color:var(--muted)}.live-caption strong{font-size:1.25rem;color:var(--accent);overflow-wrap:anywhere;text-align:right}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}