:root{color-scheme:light;--bg:#f5f5f4;--paper:#fff;--ink:#1c1917;--muted:#57534e;--line:#e7e5e4;--accent:#047857;--soft:#ecfdf5;--danger:#b91c1c;font-family:"Segoe UI","Microsoft YaHei",system-ui,sans-serif;font-size:14px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);line-height:1.6}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:1px solid transparent;border-radius:8px;padding:10px 16px;font-weight:600;white-space:nowrap}button:disabled{opacity:.5;cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #059669;outline-offset:3px}.primary{background:var(--accent);color:white}.primary:hover:not(:disabled){background:#065f46}.secondary{background:white;color:var(--ink);border-color:#d6d3d1}.text-button{background:transparent;color:var(--accent);padding:10px 0;font-weight:500;text-align:left}.danger{color:var(--danger)}.full{width:100%;margin-top:12px}.shell{max-width:1380px;margin:auto;padding:0 32px}.topbar{display:flex;align-items:center;justify-content:space-between;min-height:88px;border-bottom:1px solid var(--line);margin-bottom:28px;gap:20px}.brand{font-size:24px;font-weight:700;color:var(--ink);text-decoration:none;display:flex;align-items:baseline;gap:12px}.brand span{font-size:12px;color:var(--muted);font-weight:400}h1,h2,p{margin:0}h1{font-size:24px;line-height:1.4;font-weight:650;text-wrap:balance}h2{font-size:16px;line-height:1.5;font-weight:650;text-wrap:balance}p{text-wrap:pretty}.muted{color:var(--muted)}.small{font-size:12px;margin-top:10px}.tag{font-size:12px;padding:3px 10px;border-radius:5px;background:#e7e5e4;color:#44403c;white-space:nowrap}.status{font-size:12px;color:#065f46;background:var(--soft);border-radius:5px;padding:5px 10px;white-space:nowrap}.desktop-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:28px}.section-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}.section-head .muted{font-size:12px}.preview,.player{position:relative;overflow:hidden;border-radius:12px;background:#1c1917;aspect-ratio:16/9;isolation:isolate}.preview canvas,.player video{width:100%;height:100%;object-fit:contain;display:block}.preview-placeholder{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:24px;color:#fafaf9;background:#1c1917}.preview-placeholder p{color:#a8a29e;font-size:13px;margin-top:8px;max-width:340px}.camera-mark{font-size:38px;color:#a8a29e;line-height:1;margin-bottom:20px}.live-label{position:absolute;bottom:12px;left:12px;color:#fff;background:#292524;padding:5px 9px;font-size:11px;border-radius:4px}.share-bar{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 0}.share-bar p{color:var(--muted);font-size:12px;margin-top:3px}.panel{border:1px solid var(--line);background:var(--paper);border-radius:12px;padding:20px;margin-bottom:16px}.panel>p{font-size:13px;margin-top:6px}.panel h2{margin-bottom:8px}.panel .section-head h2{margin-bottom:0}.beauty-grid,.device-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.beauty-grid label{display:block}.beauty-grid output{float:right;color:var(--muted);font-variant-numeric:tabular-nums;font-size:12px}input[type=range]{width:100%;accent-color:var(--accent);display:block;margin:14px 0}.check{display:flex;align-items:center;gap:8px;font-size:13px;cursor:pointer}.check input{accent-color:var(--accent);width:16px;height:16px;margin:0}label:not(.check){font-size:12px;font-weight:600;display:block;color:#44403c}input:not([type=checkbox]):not([type=range]),select{display:block;width:100%;border:1px solid #d6d3d1;border-radius:7px;padding:10px 11px;background:#fff;color:var(--ink);margin-top:6px;min-width:0}input[readonly]{background:#fafaf9!important;font-size:12px}form label{margin-top:14px}.button-row{display:flex;gap:8px;margin-top:10px}.button-row button{flex:1;font-size:12px;padding:8px}.error{color:var(--danger);font-size:13px;overflow-wrap:anywhere}.error:not(:empty){margin:0 0 16px}.sidebar .error:not(:empty){margin-top:8px}.pairing-code{background:var(--soft);border:1px solid #a7f3d0;border-radius:8px;margin-top:16px;padding:16px;text-align:center}.pairing-code strong{font-size:30px;font-variant-numeric:tabular-nums;display:block;color:#065f46}.pairing-code span{display:block;font-size:11px;color:#065f46}footer{border-top:1px solid var(--line);padding:22px 0;margin-top:18px;font-size:12px;color:var(--muted)}[hidden]{display:none!important}.viewer-shell{max-width:1024px}.viewer-shell main{min-height:calc(100dvh - 215px)}.welcome{max-width:480px;margin:80px auto}.eyebrow{font-size:12px;color:var(--accent);display:block;margin-bottom:12px}.welcome h1{font-size:36px;line-height:1.3}.welcome>p{color:var(--muted);margin-top:20px;line-height:1.9}.welcome form{margin-top:32px}.pair-input{display:flex;gap:10px;align-items:stretch;margin-top:8px}.pair-input input{margin:0!important;font-size:20px!important;font-variant-numeric:tabular-nums}.pair-input button{padding:12px 24px}.welcome .error{margin-top:12px}.watch-heading{margin-top:40px}.watch-heading .eyebrow{margin-bottom:6px}.player{margin-top:22px}.viewer-controls{display:flex;gap:12px;align-items:center;margin:20px 0 12px}.viewer-controls .text-button{margin-left:auto}.device-grid select{font-size:12px}.sidebar input{font-size:13px}.sidebar .text-button{font-size:12px}.sidebar form{margin-top:8px}@media(max-width:900px){.shell{padding:0 20px}.desktop-grid{grid-template-columns:minmax(0,1fr) 290px;gap:20px}.panel{padding:16px}h1{font-size:20px}}@media(max-width:680px){.shell{padding:0 max(20px,env(safe-area-inset-left)) 0 max(20px,env(safe-area-inset-right))}.topbar{min-height:76px;margin-bottom:20px}.brand{font-size:24px}.brand span{font-size:10px;display:none}.desktop-grid{grid-template-columns:1fr}.welcome{margin:56px auto 40px}.welcome h1{font-size:30px}.watch-heading{margin-top:28px}.player{aspect-ratio:3/4;border-radius:10px}.viewer-controls{gap:8px;flex-wrap:wrap}.viewer-controls button{font-size:13px;padding:10px 12px}.viewer-controls .text-button{margin-left:0}.watch-heading h1{font-size:26px}.watch-heading .tag{font-size:11px}.viewer-shell main{min-height:calc(100dvh - 205px)}footer{padding-bottom:max(20px,env(safe-area-inset-bottom));font-size:11px}.beauty-grid{gap:16px}.preview-placeholder h2{font-size:16px}}