:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --text: #1e293b;
    --text-light: #64748b;
    --bg: #f8fafc;
    --border: #e2e8f0;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
header { background: #fff; border-bottom: 1px solid var(--border); padding: 1rem 0; position: sticky; top: 0; z-index: 100; }
header .container { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.5rem; font-weight: 700; color: var(--primary); text-decoration: none; }
nav a { margin-left: 2rem; color: var(--text-light); text-decoration: none; transition: color 0.2s; }
nav a:hover { color: var(--primary); }
.hero { padding: 5rem 0; text-align: center; background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%); }
.hero h1 { font-size: 3rem; margin-bottom: 1rem; color: var(--text); }
.hero p { font-size: 1.25rem; color: var(--text-light); max-width: 600px; margin: 0 auto 2rem; }
.btn { display: inline-block; background: var(--primary); color: #fff; padding: 0.75rem 1.5rem; border-radius: 0.5rem; text-decoration: none; font-weight: 500; transition: background 0.2s; }
.btn:hover { background: var(--primary-dark); }
.features { padding: 5rem 0; }
.features h2 { text-align: center; margin-bottom: 3rem; }
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }
.feature-card { background: #fff; padding: 2rem; border-radius: 1rem; border: 1px solid var(--border); transition: box-shadow 0.2s; }
.feature-card:hover { box-shadow: 0 10px 40px rgba(0,0,0,0.08); }
.feature-card h3 { margin-bottom: 0.75rem; color: var(--text); }
.feature-card p { color: var(--text-light); font-size: 0.95rem; }
.icon { font-size: 2rem; margin-bottom: 1rem; }
.page { padding: 4rem 0 2rem; }
.page h1 { font-size: 2.25rem; margin-bottom: 1rem; }
.page h2 { font-size: 1.35rem; margin: 2.5rem 0 0.75rem; }
.page p, .page li { color: var(--text-light); max-width: 760px; margin-bottom: 0.75rem; }
.page ul, .page ol { padding-left: 1.25rem; }
.page a { color: var(--primary); }
.page table { border-collapse: collapse; margin: 1rem 0 1.5rem; max-width: 760px; width: 100%; }
.page th, .page td { text-align: left; padding: 0.5rem 0.75rem; border-bottom: 1px solid var(--border); font-size: 0.95rem; }
.page th { color: var(--text); }
.page td { color: var(--text-light); }
.lead { font-size: 1.15rem; }
.updated { font-size: 0.85rem; }
pre { background: #0f172a; color: #e2e8f0; padding: 1rem 1.25rem; border-radius: 0.5rem; overflow-x: auto; font-size: 0.9rem; margin: 1rem 0 1.5rem; max-width: 760px; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
footer { background: #fff; border-top: 1px solid var(--border); padding: 3rem 0; margin-top: 5rem; }
footer .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 2rem; }
.footer-col h4 { margin-bottom: 1rem; }
.footer-col a { display: block; color: var(--text-light); text-decoration: none; margin-bottom: 0.5rem; }
.footer-col a:hover { color: var(--primary); }
.copyright { text-align: center; padding: 1.5rem 0; color: var(--text-light); border-top: 1px solid var(--border); margin-top: 2rem; }
@media (max-width: 768px) { .hero h1 { font-size: 2rem; } nav a { margin-left: 1rem; } }