:root{--bg: #0f172a;--panel: #1e293b;--panel-2: #263548;--text: #e2e8f0;--muted: #94a3b8;--accent: #34d399;--accent-2: #f59e0b;--blue: #60a5fa;--pink: #f472b6;--danger: #f87171}*{box-sizing:border-box;margin:0;padding:0}html,body{height:100%}body{background:var(--bg);color:var(--text);font-family:-apple-system,PingFang SC,Microsoft YaHei,Noto Sans SC,sans-serif;-webkit-font-smoothing:antialiased}#app{max-width:560px;margin:0 auto;min-height:100%;display:flex;flex-direction:column}.screen{display:none;flex:1;flex-direction:column;padding:16px;gap:14px}.screen.active{display:flex}.menu-header h1{font-size:32px;letter-spacing:6px;color:var(--accent)}.tagline{color:var(--muted);font-size:13px;margin-top:6px}#move-cards{display:flex;flex-direction:column;gap:12px}.move-card{background:var(--panel);border:1px solid #334155;border-radius:14px;padding:16px}.move-card h3{font-size:20px;margin-bottom:6px}.move-card p{color:var(--muted);font-size:13px;line-height:1.6}.move-meta{margin:8px 0;font-size:12px!important;color:#64748b!important}.move-actions{display:flex;gap:10px;margin-top:10px;align-items:center}.soon{color:#64748b;font-size:13px;border:1px dashed #475569;border-radius:10px;padding:8px 16px}.jg-intro{background:var(--panel);border:1px solid #334155;border-radius:14px;padding:16px;display:flex;flex-direction:column;gap:10px}.jg-intro p{color:var(--muted);font-size:14px;line-height:1.7}.jg-intro b{color:var(--text)}.jg-start{font-size:18px;padding:14px;border-radius:14px}.btn{border:none;border-radius:10px;padding:10px 18px;font-size:14px;cursor:pointer;color:var(--text);background:var(--panel-2)}.btn.primary{background:var(--accent);color:#052e22;font-weight:600}.btn.ghost{background:transparent;border:1px solid #475569}.history-title{font-size:15px;color:var(--muted);margin-top:8px}#history-panel{display:flex;flex-direction:column;gap:6px}.hist-row{display:flex;justify-content:space-between;background:var(--panel);border-radius:8px;padding:8px 12px;font-size:13px}.hist-date{color:var(--muted);flex:1;text-align:center}.hist-score{color:var(--accent);font-weight:600}.hist-empty{color:#64748b;font-size:13px}#screen-practice{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;padding:0;background:#020617}#stage{position:relative;width:100%;height:100%;background:#020617;overflow:hidden}#video{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;object-fit:cover;transform:scaleX(-1)}#overlay{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%}#loading,#tracking-warn,#no-person,#demo-badge{position:absolute;left:50%;transform:translate(-50%);padding:8px 16px;border-radius:999px;font-size:13px;background:#0f172ad9;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:5}#loading{top:50%;transform:translate(-50%,-50%)}#no-person,#tracking-warn{top:96px;color:var(--accent-2)}#tracking-warn{color:var(--danger)}#demo-badge{top:96px;color:var(--blue);border:1px solid rgba(96,165,250,.4);max-width:86vw;text-align:center}.hud-steps{position:absolute;top:54px;left:0;right:0;display:flex;justify-content:center;align-items:center;gap:5px;padding:4px 10px;z-index:4;pointer-events:none;font-size:12.5px;flex-wrap:wrap}.step{padding:3px 9px;border-radius:999px;background:#0f172a8c;color:#94a3b8;white-space:nowrap}.step.current{background:var(--accent);color:#052e22;font-weight:700}.step.done{color:var(--accent)}.step-sep{color:#475569}#phase-flash{position:absolute;top:30%;left:0;right:0;text-align:center;z-index:6;pointer-events:none;opacity:0;transition:opacity .3s}#phase-flash.show{opacity:1}#phase-flash .pf-title{font-size:clamp(30px,7vw,46px);font-weight:800;color:#fff;text-shadow:0 2px 14px rgba(0,0,0,.9)}#phase-flash .pf-sub{font-size:clamp(16px,3.5vw,22px);color:var(--accent-2);margin-top:8px;text-shadow:0 2px 10px rgba(0,0,0,.9)}#demo-done{position:absolute;top:0;right:0;bottom:0;left:0;z-index:7;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;background:#020617bf;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}#demo-done[hidden]{display:none}#demo-done h3{font-size:24px}#demo-done .dd-points{display:flex;flex-direction:column;gap:7px;margin-bottom:6px}#demo-done .dd-points span{color:var(--muted);font-size:15px}#demo-done .dd-points span b{color:var(--accent);margin-right:6px}#demo-done .btn{min-width:220px;text-align:center}#debug-panel{position:absolute;left:10px;bottom:130px;z-index:8;background:#000000b3;color:#4ade80;font-size:12px;line-height:1.5;padding:8px 10px;border-radius:8px;pointer-events:none}.hud-top{position:absolute;top:0;left:0;right:0;display:flex;align-items:center;gap:12px;padding:12px 14px;padding-top:max(12px,env(safe-area-inset-top));background:linear-gradient(rgba(2,6,23,.75),transparent);z-index:4}.hud-top .hud-move-name{font-size:18px;font-weight:600;flex:1;text-align:center}.hud-top .btn{padding:8px 12px;font-size:15px;background:#1e293b99}.hud-fps{color:var(--muted);font-size:12px;font-variant-numeric:tabular-nums}.hud-bottom{position:absolute;left:0;right:0;bottom:0;display:flex;flex-direction:column;gap:12px;padding:18px 16px;padding-bottom:max(18px,env(safe-area-inset-bottom));background:linear-gradient(transparent,#020617e0 35%);z-index:4}.hud-phase-row{display:flex;align-items:center;gap:12px}.hud-phase-name{font-size:18px;font-weight:600;min-width:120px}.hud-phase-dots{display:flex;gap:7px;flex:1}.dot{width:11px;height:11px;border-radius:50%;background:#334155;transition:background .3s}.dot.current{background:var(--accent-2);box-shadow:0 0 8px var(--accent-2)}.dot.done{background:var(--accent)}.hud-timer{color:var(--muted);font-size:15px;font-variant-numeric:tabular-nums}.hud-feedback{min-height:34px;font-size:clamp(22px,4.5vw,34px);font-weight:600;color:var(--accent-2);text-shadow:0 2px 8px rgba(0,0,0,.8)}.hud-score-row{display:flex;align-items:center;gap:12px}.hud-score-bar{flex:1;height:14px;background:#1e293bcc;border-radius:999px;overflow:hidden}.hud-score-fill{height:100%;width:0;background:linear-gradient(90deg,var(--accent-2),var(--accent));border-radius:999px;transition:width .25s}.hud-score-num{font-size:26px;font-weight:700;color:var(--accent);min-width:48px;text-align:right;font-variant-numeric:tabular-nums;text-shadow:0 2px 8px rgba(0,0,0,.8)}.hud-controls{display:flex;gap:10px;align-items:center}#camera-select{background:#1e293bcc;color:var(--text);border:1px solid #475569;border-radius:10px;padding:8px 10px;font-size:13px;max-width:42vw}.hud-view-hint{font-size:12px;color:#94a3b8;text-align:center}.menu-footer{display:flex;align-items:center;gap:10px;margin-top:4px}.voice-status{font-size:12px;color:var(--muted)}.debug-report{width:100%;background:var(--panel);border-radius:12px;padding:12px 14px;text-align:left;font-size:12px}.debug-report h3{font-size:13px;color:var(--muted);margin-bottom:8px}.debug-report table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}.debug-report th,.debug-report td{padding:3px 4px;text-align:center;color:var(--text);white-space:nowrap}.debug-report th{color:var(--muted);font-weight:500;font-size:11px}.debug-report td.bad{color:var(--danger)}.debug-report .ev{color:var(--accent-2);margin-top:8px;line-height:1.7}#stage:fullscreen{background:#000}.video-header{display:flex;align-items:center;gap:12px}.video-header h2{font-size:18px;flex:1;text-align:center}.video-step{text-align:center;color:var(--accent);font-size:14px;font-weight:600}.video-wrap{background:#000;border-radius:14px;overflow:hidden;border:1px solid #334155}#demo-video{display:block;width:100%;max-height:62vh}.video-tip{color:var(--muted);font-size:13px;line-height:1.6}#video-unmute{color:var(--accent-2)}#screen-summary{align-items:center;text-align:center;padding-top:40px}.summary-move{font-size:22px;color:var(--muted)}.summary-score{font-size:84px;font-weight:800;line-height:1.1;font-variant-numeric:tabular-nums}.summary-score.good{color:var(--accent)}.summary-score.mid{color:var(--accent-2)}.summary-score.low{color:var(--danger)}.summary-meta{color:var(--muted);font-size:13px}.summary-phases{width:100%;display:flex;flex-direction:column;gap:8px;margin-top:10px}.phase-row{display:flex;align-items:center;gap:10px;font-size:13px}.phase-label{min-width:110px;text-align:left}.phase-bar{flex:1;height:8px;background:var(--panel);border-radius:999px;overflow:hidden}.phase-bar-fill{height:100%;border-radius:999px}.phase-bar-fill.good{background:var(--accent)}.phase-bar-fill.mid{background:var(--accent-2)}.phase-bar-fill.low{background:var(--danger)}.phase-num{min-width:30px;text-align:right;font-variant-numeric:tabular-nums}.summary-hints{width:100%;background:var(--panel);border-radius:12px;padding:14px 16px;text-align:left}.summary-hints h3{font-size:14px;margin-bottom:8px;color:var(--muted)}.summary-hints ul{padding-left:18px;display:flex;flex-direction:column;gap:4px;font-size:14px}.summary-actions{display:flex;gap:12px;margin-top:8px}