:root{--bg: #0a0a0a;--fg: #f5f5f5;--muted: #9aa0a6;--accent: #4ade80;--danger: #f87171;--panel: rgba(20, 20, 20, .92);--border: rgba(255, 255, 255, .14)}*{box-sizing:border-box}html,body{margin:0;padding:0;height:100%;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;overflow:hidden}#app{position:fixed;inset:0;display:flex;flex-direction:column}#stage{position:relative;flex:1;overflow:hidden;background:#000}#video{width:100%;height:100%;object-fit:cover;display:block}#overlay{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}.hint{position:absolute;left:50%;bottom:96px;transform:translate(-50%);background:var(--panel);border:1px solid var(--border);border-radius:999px;padding:8px 16px;font-size:13px;white-space:nowrap;max-width:calc(100% - 32px);overflow:hidden;text-overflow:ellipsis}.capture-btn{position:absolute;left:50%;bottom:20px;transform:translate(-50%);width:68px;height:68px;border-radius:50%;background:transparent;border:4px solid #ffffff;padding:0;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:transform .08s ease;-webkit-tap-highlight-color:transparent}.capture-btn:active{transform:translate(-50%) scale(.93)}.capture-btn:disabled{opacity:.45;cursor:not-allowed}.capture-inner{width:52px;height:52px;border-radius:50%;background:#fff}.capture-busy{position:absolute;left:50%;bottom:100px;transform:translate(-50%);background:var(--panel);border:1px solid var(--accent);color:var(--accent);border-radius:999px;padding:8px 16px;font-size:13px;font-weight:600;letter-spacing:.5px}.capture-busy.hidden{display:none}.focus-dot{position:absolute;width:60px;height:60px;margin-left:-30px;margin-top:-30px;border:2px solid #4ade80;border-radius:50%;pointer-events:none;opacity:0;transform:scale(1.4);transition:opacity .2s ease,transform .2s ease}.focus-dot.animate{animation:focus-pulse .8s ease-out}@keyframes focus-pulse{0%{opacity:1;transform:scale(1.4)}60%{opacity:1;transform:scale(1)}to{opacity:0;transform:scale(.9)}}.controls{display:flex;gap:6px;padding:10px;background:#111;border-top:1px solid var(--border);padding-bottom:calc(10px + env(safe-area-inset-bottom))}.doc-btn{flex:1;background:#1a1a1a;color:var(--fg);border:1px solid var(--border);border-radius:10px;padding:10px 4px;font-size:12px;font-weight:500;cursor:pointer;min-height:44px;white-space:nowrap}.doc-btn.active{background:var(--fg);color:#000;border-color:var(--fg)}.icon-btn{width:44px;height:44px;background:#1a1a1a;color:var(--fg);border:1px solid var(--border);border-radius:10px;font-size:18px;cursor:pointer}.result{position:absolute;inset:0;background:var(--panel);backdrop-filter:blur(12px);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;padding:24px;z-index:10}.result.hidden{display:none}.badge{padding:8px 14px;border-radius:999px;font-weight:600;font-size:13px;letter-spacing:.5px}.badge.ok{background:#4ade802e;color:var(--accent);border:1px solid var(--accent)}.badge.bad{background:#f871712e;color:var(--danger);border:1px solid var(--danger)}.number{font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:clamp(26px,7vw,40px);font-weight:600;letter-spacing:2px;text-align:center;word-break:break-all}.note{color:var(--muted);font-size:14px;text-align:center;max-width:320px}.primary{background:var(--fg);color:#000;border:none;border-radius:12px;padding:14px 28px;font-size:16px;font-weight:600;cursor:pointer;min-height:48px;min-width:200px}.error{position:absolute;top:16px;left:16px;right:16px;background:var(--danger);color:#000;padding:12px 16px;border-radius:10px;font-size:14px;font-weight:500;z-index:20}.error.hidden{display:none}.start-gate{position:absolute;inset:0;background:var(--bg);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;padding:32px 24px;z-index:30;text-align:center}.start-gate.hidden{display:none}.title{font-size:28px;font-weight:700;margin:0}.subtitle{color:var(--muted);font-size:15px;line-height:1.5;margin:0;max-width:320px}.footnote{color:var(--muted);font-size:12px;margin:0}@media (max-width: 480px){#debug-hud{font-size:10px!important;max-width:60vw!important;padding:6px 8px!important}}