:root{--bg:#30302e;--bg-dark:#262624;--text:#c2c0b6;--text-h:#e8e6df;--btn:#253e5f;--btn-text:#80aadd;--border:#c2c0b61f;--border-solid:#3e3e3b;color:var(--text);background:var(--bg-dark);-webkit-font-smoothing:antialiased;font:16px/1.5 system-ui,-apple-system,Segoe UI,sans-serif}*{box-sizing:border-box;margin:0;padding:0}[hidden]{display:none!important}body{margin:0}#app{background:var(--bg-dark);max-width:480px;min-height:100svh;margin:0 auto}.screen{flex-direction:column;min-height:100svh;display:flex}.screen-header{background:var(--bg);border-bottom:1px solid var(--border);border-radius:0 0 16px 16px;align-items:flex-start;gap:12px;padding:24px 20px 20px;display:flex}.screen-header h1{color:var(--text-h);margin-bottom:2px;font-size:22px;font-weight:600;line-height:1.2}.screen-header .subtitle{color:var(--text);font-size:14px}.screen-body{flex-direction:column;flex:1;gap:16px;padding:20px;display:flex}.back-btn{color:var(--text);cursor:pointer;background:0 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30px;font-size:18px;display:none;position:absolute;bottom:60px;left:50%;transform:translate(-50%)}#exit-ar{cursor:pointer;background:#ffffffe6;border:none;border-radius:50%;width:40px;height:40px;font-size:18px;position:absolute;top:35px;right:20px}:root{--hotspot-cofactor:#d4a843;--hotspot-metal:#a0a4ab;--hotspot-carbohydrate:#6cb86f;--hotspot-ligand:#80aadd;--hotspot-active:#e07b6f;--hotspot-binding:#b984d8;--hotspot-default:#c2c0b6}.protein-hotspot{background:var(--hotspot-default);width:18px;height:18px;box-shadow:0 0 0 1.5px var(--hotspot-default), 0 2px 6px #0006;cursor:pointer;pointer-events:auto;border:2px solid #1a1a18;border-radius:50%;padding:0;transition:opacity .12s ease-out,transform .12s ease-out;transform:translate(-50%,-50%)}.protein-hotspot:hover,.protein-hotspot:focus-visible{outline:none;transform:translate(-50%,-50%)scale(1.2)}.protein-hotspot:focus-visible{box-shadow:0 0 0 1.5px var(--hotspot-default), 0 0 0 4px 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#0006}.protein-hotspot.occluded,.protein-hotspot[data-visibility=hidden]{opacity:.25}.annotation-backdrop{opacity:0;pointer-events:none;z-index:100;background:#00000059;transition:opacity .2s ease-out;position:fixed;inset:0}.annotation-backdrop.visible{opacity:1;pointer-events:auto}.annotation-sheet{background:var(--bg);max-width:480px;color:var(--text);z-index:101;touch-action:pan-y;border-top-left-radius:18px;border-top-right-radius:18px;margin:0 auto;padding:8px 22px 28px;transition:transform .26s cubic-bezier(.22,1,.36,1);position:fixed;bottom:0;left:0;right:0;transform:translateY(100%);box-shadow:0 -8px 28px #0006}.annotation-sheet.visible{transform:translateY(0)}.annotation-handle{background:var(--border-solid);cursor:grab;touch-action:none;border-radius:999px;width:44px;height:5px;margin:8px auto 14px}.annotation-handle:active{cursor:grabbing}.annotation-close{width:30px;height:30px;color:var(--text);cursor:pointer;background:0 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