:root{--bg:#f6f7f9;--surface:#fff;--surface-2:#f9fafb;--text:#111827;--muted:#6b7280;--border:#e5e7eb;--primary:#1f2937;--primary-hover:#111827;--primary-text:#fff;--accent:#2563eb;--danger:#b91c1c;--danger-bg:#fef2f2;--success:#15803d;--success-bg:#f0fdf4;--warning:#b45309;--warning-bg:#fffbeb;--radius:12px;--radius-sm:8px;--shadow:0 1px 2px rgba(16,24,40,.04),0 1px 3px rgba(16,24,40,.08);--ring:0 0 0 3px rgba(37,99,235,.25);--header-h:56px}@media (prefers-color-scheme:dark){:root[data-theme=dark]{--bg:#0b1220;--surface:#111a2e;--surface-2:#0f1728;--text:#e5e7eb;--muted:#9aa4b2;--border:#1f2a44;--primary:#2563eb;--primary-hover:#1d4ed8;--shadow:none}}*{box-sizing:border-box}body,html{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5;-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}h1{font-size:1.4rem;margin:0 0 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