:root{--bg:#0b1116;--surface:#121b22;--border:#243440;--text:#e8f1f5;--muted:#8ea4b0;--accent:#43d9f1;--accent-text:#04252c;--danger:#ff6b76;--warning:#f3c969;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif}*{box-sizing:border-box}html,body{background:var(--bg);min-height:100%;color:var(--text);margin:0}[hidden]{display:none!important}button{font:inherit;cursor:pointer}button:disabled{cursor:default;opacity:.5}.topbar{justify-content:space-between;align-items:center;padding:14px 20px;display:flex}.brand{letter-spacing:.08em;align-items:center;gap:8px;font-weight:600;display:flex}.link{border:1px solid var(--border);color:var(--muted);background:0 0;border-radius:999px;padding:4px 12px;font-size:13px}.start{max-width:640px;margin:0 auto;padding:48px 20px 64px}h1{margin:0 0 12px;font-size:32px;font-weight:600}.subtitle{color:var(--muted);margin:0 0 28px;font-size:17px;line-height:1.6}.primary{background:var(--accent);color:var(--accent-text);border:0;border-radius:12px;padding:14px 32px;font-size:18px;font-weight:600}.primary:not(:disabled):hover{filter:brightness(1.08)}.status{min-height:1.6em;color:var(--muted);margin:16px 0 0;line-height:1.6}.status.error{color:var(--warning)}.notice{border:1px solid var(--warning);color:var(--warning);border-radius:10px;margin:0 0 20px;padding:12px 14px;line-height:1.6}.steps{border:1px solid var(--border);background:var(--surface);border-radius:14px;margin-top:36px;padding:20px 22px}.steps h2{color:var(--accent);margin:0 0 10px;font-size:15px;font-weight:600}.steps ol{color:var(--text);margin:0;padding-left:20px;line-height:1.7}.steps li+li{margin-top:6px}.note{color:var(--muted);margin-top:20px;font-size:13px}.viewer{background:#000;flex-direction:column;display:flex;position:fixed;inset:0}.toolbar{background:var(--surface);border-bottom:1px solid var(--border);align-items:center;gap:8px;padding:10px 14px;display:flex}.toolbar button{border:1px solid var(--border);color:var(--text);background:0 0;border-radius:8px;padding:6px 14px}.toolbar button:hover{border-color:var(--accent)}.toolbar .danger:hover{border-color:var(--danger);color:var(--danger)}.live-dot{background:#2ecc71;border-radius:50%;width:9px;height:9px}.device-name{font-weight:600}.spacer{flex:1}.stage{flex:1;justify-content:center;align-items:center;min-height:0;display:flex;position:relative}.stage canvas{object-fit:contain;width:100%;height:100%}.paused{color:var(--muted);background:#121b22eb;border-radius:10px;margin:0;padding:10px 16px;font-size:14px;position:absolute;bottom:24px;left:50%;transform:translate(-50%)}@media (width<=520px){h1{font-size:26px}.toolbar{flex-wrap:wrap}}