*{margin:0;padding:0;box-sizing:border-box}:root{--bg-dark: #1a1a2e;--bg-panel: rgba(16, 16, 32, .92);--accent: #e94560;--accent-light: #ff6b81;--text: #eaeaea;--text-muted: #8888aa;--border: rgba(255, 255, 255, .08);--muscle-red: #c0392b;--tendon-white: #f5f0e8}body{font-family:PingFang SC,Microsoft YaHei,Segoe UI,system-ui,-apple-system,sans-serif;background:var(--bg-dark);color:var(--text);overflow:hidden;width:100vw;height:100vh}#app{position:relative;width:100%;height:100%}#canvas3d{position:absolute;top:0;left:0;width:100%;height:100%;display:block}#ui-overlay{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none}#ui-overlay>*{pointer-events:auto}#top-bar{position:absolute;top:0;left:0;right:0;padding:12px 24px;background:linear-gradient(180deg,rgba(16,16,32,.95),transparent);display:flex;align-items:baseline;gap:16px;pointer-events:none}#top-bar h1{font-size:22px;font-weight:700;color:var(--accent);letter-spacing:0}#top-bar .subtitle{font-size:13px;color:var(--text-muted)}#controls-panel{position:absolute;top:60px;left:16px;width:300px;background:var(--bg-panel);border:1px solid var(--border);border-radius:12px;padding:16px;display:flex;flex-direction:column;gap:14px;max-height:calc(100vh - 120px);overflow-y:auto;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.control-group>label{display:block;font-size:11px;text-transform:none;letter-spacing:0;color:var(--text-muted);margin-bottom:6px;font-weight:600}.control-group input[type=text],.control-group input[type=date],.control-group select,.control-group textarea{width:100%;padding:8px 12px;background:#ffffff0f;border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:13px;outline:none;transition:border-color .2s;font-family:inherit}.control-group textarea{resize:vertical;min-height:42px}.control-group input[type=text]:focus,.control-group input[type=date]:focus,.control-group select:focus,.control-group 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