:root{--bg:#f4f6f8;--surface:#ffffff;--surface-alt:#f8fafc;--border:#d9e0e7;--border-strong:#b8c4cf;--text:#14212e;--text-muted:#5b6b7b;--text-faint:#8494a3;--brand:#14548c;--brand-dark:#0f4270;--brand-light:#e8f1f9;--success:#1b7f4d;--success-bg:#e6f4ec;--warning:#96620a;--warning-bg:#fdf3e2;--danger:#a52121;--danger-bg:#fbeaea;--neutral-bg:#eef1f4;--radius:4px;--shadow:0 1px 2px rgba(20,33,46,0.06);--font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3,h4{margin:0 0 8px;font-weight:600;line-height:1.3}h1{font-size:20px}h2{font-size:16px}h3{font-size:14px}p{margin:0 0 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