:root{color-scheme:dark;--bg: #0b0d14;--panel: #12151f;--panel-2: #1a1e2c;--line: #262c3d;--text: #e7e9f2;--muted: #8890a8;--accent: #4fb8ff;--accent-2: #ffb347;font-family:Segoe UI,system-ui,-apple-system,sans-serif}*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg);color:var(--text)}#app{display:flex;flex-direction:column;height:100vh}.topbar{display:flex;align-items:center;justify-content:space-between;padding:10px 18px;border-bottom:1px solid var(--line);background:var(--panel);flex-wrap:wrap;gap:10px}.topbar h1{font-size:15px;font-weight:600;margin:0;letter-spacing:.02em}.topbar .muted{color:var(--muted);font-weight:400}.tier-ladder{display:flex;gap:6px}.tier-btn{padding:6px 14px;border-radius:6px;border:1px solid var(--line);background:var(--panel-2);color:var(--text);cursor:pointer;font-size:13px;font-weight:600;transition:.15s ease}.tier-btn:hover{border-color:var(--accent)}.tier-btn.active{background:var(--accent);color:#051018;border-color:var(--accent)}.layout{flex:1;display:flex;min-height:0}.stage-wrap{flex:1;display:flex;flex-direction:column;min-width:0}#stage{flex:1;position:relative;background:radial-gradient(ellipse at 50% 40%,#171c2a,#0a0c12 75%);overflow:hidden}#stage canvas{display:block;width:100%;height:100%}.stage-controls{display:flex;align-items:center;gap:10px;padding:10px 16px;background:var(--panel);border-top:1px solid var(--line)}.mode-btn{padding:6px 14px;border-radius:6px;border:1px solid var(--line);background:var(--panel-2);color:var(--muted);cursor:pointer;font-size:13px;font-weight:600}.mode-btn.active{background:var(--accent-2);color:#1a1204;border-color:var(--accent-2)}#btn-play{width:32px;height:32px;border-radius:50%;border:1px solid var(--line);background:var(--panel-2);color:var(--text);cursor:pointer;font-size:13px}#scrub{flex:1;accent-color:var(--accent)}.anchor-toggle{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--muted);white-space:nowrap}.panel{width:320px;flex-shrink:0;background:var(--panel);border-left:1px solid var(--line);overflow-y:auto;padding:14px 16px 40px}.panel h2{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:18px 0 8px;border-bottom:1px solid var(--line);padding-bottom:6px}.panel h2:first-child{margin-top:0}.field{margin-bottom:10px}.field label{display:flex;justify-content:space-between;font-size:12px;color:var(--text);margin-bottom:4px}.field label .val{color:var(--accent);font-variant-numeric:tabular-nums}.field input[type=range]{width:100%;accent-color:var(--accent)}.field input[type=color]{width:100%;height:26px;border:1px solid var(--line);background:var(--panel-2);border-radius:4px;padding:2px}.tier-desc{font-size:12px;line-height:1.5;color:var(--muted);background:var(--panel-2);border:1px solid var(--line);border-radius:6px;padding:10px 12px;margin-bottom:4px}.tier-desc b{color:var(--text)}.btn-row{display:flex;gap:8px;margin-top:6px}.btn-row button{flex:1;padding:8px;border-radius:6px;border:1px solid var(--line);background:var(--panel-2);color:var(--text);cursor:pointer;font-size:12px}.btn-row button:hover{border-color:var(--accent)}.hint{font-size:11px;color:var(--muted);margin-top:4px;line-height:1.4}