:root{--bg: #0b0c10;--panel: #14161d;--panel-2: #1b1e27;--line: #262a36;--text: #e8eaf0;--muted: #8b90a0;--accent: #7c5cff;--accent-2: #5ce1e6;--ok: #34d399;--err: #f87171;--radius: 12px}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);font:14px/1.5 -apple-system,PingFang SC,Microsoft YaHei,system-ui,sans-serif;-webkit-font-smoothing:antialiased}code,pre{font-family:ui-monospace,SFMono-Regular,SF Mono,Menlo,monospace}.app{display:flex;flex-direction:column;height:100vh;overflow:hidden}.topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#12141b,#0e1015)}.brand{display:flex;align-items:center;gap:12px}.brand-mark{width:38px;height:38px;display:grid;place-items:center;font-size:20px;border-radius:10px;background:linear-gradient(135deg,var(--accent),#b06cff);box-shadow:0 6px 20px #7c5cff59}.brand 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