:root{--bg: #0f1216;--panel: #171c23;--panel-2: #1e252e;--border: #2a323d;--text: #e6eaf0;--muted: #8b97a7;--primary: #4f8cff;--primary-2: #3a78f0;--danger: #ff5c5c;--green: #34d399;--radius: 12px}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:radial-gradient(1200px 600px at 80% -10%,#1b2330 0%,var(--bg) 55%);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-size:14px}.center{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.muted{color:var(--muted)}.sm{font-size:12px}.big{font-size:22px}.topbar{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;border-bottom:1px solid 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