:root{color-scheme:dark;font-family:Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;line-height:1.4;color:#e8e8e8;background:#141414}*{box-sizing:border-box}html,body,#root{margin:0;height:100%}button,input[type=file]{font:inherit}.app{display:grid;grid-template-rows:auto 1fr;height:100%}.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 16px;border-bottom:1px solid #2c2c2c;background:#1a1a1a}.brand{display:flex;align-items:baseline;gap:10px}.brand strong{font-size:15px;letter-spacing:.02em}.brand span{font-size:12px;color:#8a8a8a}.actions{display:flex;align-items:center;gap:10px}.status{font-size:12px;padding:4px 8px;border-radius:4px;background:#222}.status.live{color:#86efac}.status.offline{color:#fca5a5}.actions button{border:1px solid #3a3a3a;background:#242424;color:#eee;padding:6px 12px;border-radius:6px;cursor:pointer}.actions button:hover{background:#2e2e2e}.zoom-label{min-width:48px;text-align:center;font-size:12px;color:#a3a3a3;font-variant-numeric:tabular-nums}.mode-toggle{display:inline-flex;border:1px solid #3a3a3a;border-radius:6px;overflow:hidden}.mode-toggle button{border:none;border-radius:0;background:#1c1c1c}.mode-toggle button.active{background:#2563eb;color:#fff}.canvas-wrap.prototype-mode{outline:1px solid #164e63}.workspace{display:grid;grid-template-columns:1fr 240px;min-height:0}.canvas-wrap{position:relative;overflow:hidden;background-color:#1f1f1f;background-image:linear-gradient(#2a2a2a 1px,transparent 1px),linear-gradient(90deg,#2a2a2a 1px,transparent 1px);background-size:20px 20px}.canvas-wrap.panning{cursor:grabbing}.inspector{border-left:1px solid #2c2c2c;background:#171717;padding:14px;overflow:auto}.inspector h2{margin:0 0 12px;font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:#7a7a7a}.inspector dl{margin:0;display:grid;grid-template-columns:72px 1fr;gap:8px 10px;font-size:13px}.inspector dt{color:#8a8a8a}.inspector dd{margin:0;word-break:break-all}.inspector .empty{color:#6a6a6a;font-size:13px}