:root{--bg: #0b0d13;--bg-soft: #12151f;--card: #161a26;--card-2: #1d2230;--border: #2a3142;--text: #e8eaf0;--muted: #8b93a7;--accent: #f5a623;--accent-2: #ffce6b;--ok: #36c98a;--err: #ff6b6b;--shadow: 0 14px 40px rgba(0, 0, 0, .45)}*{box-sizing:border-box;margin:0;padding:0}html,body{height:100%}body{background:radial-gradient(900px 500px at 12% -8%,rgba(245,166,35,.12),transparent),radial-gradient(800px 520px at 96% 6%,rgba(39,110,200,.14),transparent),var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,Segoe UI,sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased}h1,h2{font-weight:700;letter-spacing:.01em}.muted{color:var(--muted);font-size:13px}.topbar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px;padding:22px clamp(16px,4vw,48px);border-bottom:1px solid var(--border);background:linear-gradient(180deg,rgba(255,255,255,.02),transparent)}.brand{display:flex;align-items:center;gap:16px}.logo{display:grid;grid-template-columns:repeat(3,12px);grid-template-rows:repeat(3,12px);gap:3px;padding:7px;background:#0c0e16;border:1px solid var(--border);border-radius:12px;transform:rotate(-8deg);box-shadow:var(--shadow)}.logo span{border-radius:3px}.logo span:nth-child(1){background:#c0392b}.logo span:nth-child(2){background:#f4f4f4}.logo span:nth-child(3){background:#27ae60}.logo span:nth-child(4){background:#f4d000}.logo span:nth-child(5){background:#e67e22}.logo span:nth-child(6){background:#2774c8}.logo span:nth-child(7){background:#27ae60}.logo span:nth-child(8){background:#c0392b}.logo span:nth-child(9){background:#f4d000}.brand-text h1{font-size:22px}.brand-text p{color:var(--muted);font-size:13px}.tagline{color:var(--accent-2);font-size:12.5px;border:1px solid rgba(245,166,35,.35);background:#f5a62314;padding:6px 12px;border-radius:999px}.layout{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:20px;padding:22px clamp(16px,4vw,48px);max-width:1280px;margin:0 auto}@media(max-width:940px){.layout{grid-template-columns:1fr}}.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:18px;box-shadow:var(--shadow)}.card+.card,.panel .card+.card{margin-top:20px}.card-head,.stage-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:12px}.card h2,.stage h2{font-size:16px}.hint{color:var(--muted);font-size:13px;margin-bottom:14px}.hint strong{color:var(--accent-2)}.stage{display:flex;flex-direction:column}#canvas-wrap{width:100%;height:440px;border-radius:12px;overflow:hidden;background:#0d0f15;border:1px solid var(--border)}#canvas-wrap canvas{display:block}.playback{margin-top:16px;display:flex;flex-direction:column;gap:12px}.pb-buttons{display:grid;grid-template-columns:1fr 1.2fr 1fr;gap:10px}.pb-buttons button{padding:11px 8px;font-size:14px}button{cursor:pointer;font-family:inherit;border-radius:10px;border:1px solid var(--border);background:var(--card-2);color:var(--text);font-size:14px;font-weight:600;transition:transform .08s ease,background .15s ease,opacity .15s ease}button:hover:not(:disabled){background:#262d3e}button:active:not(:disabled){transform:translateY(1px)}button:disabled{opacity:.4;cursor:not-allowed}button.play{background:linear-gradient(180deg,var(--accent-2),var(--accent));color:#2a1c00;border-color:transparent}button.play.playing{background:linear-gradient(180deg,#ff8f6b,#e8593a);color:#2a0c00}.speed{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--muted)}.speed span{white-space:nowrap}.speed input[type=range]{flex:1;accent-color:var(--accent)}.pb-info{font-size:13px;color:var(--accent-2);background:#f5a62312;border:1px solid rgba(245,166,35,.2);border-radius:9px;padding:8px 12px;text-align:center}.unfold{display:grid;grid-template-columns:repeat(4,max-content);grid-template-areas:".  u  .  ." 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