:root{--primary:#1e40af;--primary-hover:#1d4ed8;--accent:#f59e0b;--danger:#ef4444;--danger-hover:#dc2626;--success:#10b981;--text:#1a1a1a;--text-muted:#6b7280;--border:#e5e7eb;--bg:#f9fafb;--bg-card:#ffffff;--radius:8px;--shadow:0 1px 4px rgba(0,0,0,0.08);--shadow-md:0 4px 12px rgba(0,0,0,0.12)}*{box-sizing:border-box}body{font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--text);margin:0;padding:0;line-height:1.5}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3,h4{margin:0 0 .5rem;line-height:1.3}p{margin:0 0 1rem}@keyframes spin{to{transform:rotate(1turn)}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}