:root{--bg: #f4f6fa;--card: #ffffff;--line: #e2e8f0;--line-strong: #cbd5e1;--text: #0f172a;--text-2: #475569;--text-3: #64748b;--accent: #2f7fe0;--accent-weak: rgba(47, 127, 224, .1);--warn: #b45309;--warn-bg: #fff7ed;--err: #b91c1c;--err-bg: #fef2f2;--ok: #15803d;--radius: 12px;--shadow: 0 1px 2px rgba(15, 23, 42, .04), 0 4px 16px rgba(15, 23, 42, .05)}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Microsoft YaHei,PingFang SC,Hiragino Sans GB,sans-serif;font-size:14px;line-height:1.55;-webkit-font-smoothing:antialiased}h1,h2,h3,h4{margin:0;font-weight:650}.app{max-width:1760px;margin:0 auto;padding:16px 18px 40px}.top{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;flex-wrap:wrap;padding-bottom:12px;border-bottom:1px solid var(--line)}.top h1{font-size:19px;letter-spacing:-.01em}.top .sub{margin:4px 0 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