:root { --brand: #4F46E5; --text: #0F172A; --muted: #64748B; --border: #E2E8F0; --bg: #FAFAFC; }
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; font-family: Inter, system-ui, sans-serif; color: var(--text); background: var(--bg); line-height: 1.7; }
.container { max-width: 820px; margin: 0 auto; padding: 0 28px; }
header { background: white; border-bottom: 1px solid var(--border); padding: 18px 0; position: sticky; top: 0; z-index: 10; }
.nav { display: flex; align-items: center; justify-content: space-between; }
.brand { font-weight: 800; font-size: 20px; color: var(--brand); text-decoration: none; letter-spacing: -0.025em; }
.nav-links { display: flex; gap: 28px; }
.nav-links a { color: var(--text); text-decoration: none; font-size: 14px; font-weight: 500; }
.nav-links a:hover { color: var(--brand); }
main { padding: 56px 0 96px; }
h1 { font-size: 40px; line-height: 1.15; margin: 0 0 12px; letter-spacing: -0.02em; }
.lead { font-size: 18px; color: var(--muted); margin: 0 0 32px; }
.updated { display: inline-block; font-size: 13px; color: var(--muted); padding: 6px 14px; background: white; border: 1px solid var(--border); border-radius: 999px; margin-bottom: 40px; }
h2 { font-size: 24px; margin-top: 48px; margin-bottom: 12px; }
h3 { font-size: 18px; margin-top: 28px; margin-bottom: 8px; }
p { color: #334155; margin: 0 0 16px; }
ul, ol { color: #334155; padding-left: 24px; }
li { margin-bottom: 8px; }
code { font-family: 'JetBrains Mono', monospace; background: #F1F5F9; padding: 2px 8px; border-radius: 4px; font-size: 14px; }
.callout { background: #F8FAFC; border-left: 4px solid var(--brand); padding: 18px 24px; border-radius: 8px; margin: 28px 0; }
table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 14px; }
th, td { border: 1px solid var(--border); padding: 10px 14px; text-align: left; vertical-align: top; }
th { background: #F8FAFC; font-weight: 600; }
footer { background: #0F172A; color: #94A3B8; padding: 48px 0 32px; font-size: 13px; }
footer .foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
footer a { color: #94A3B8; text-decoration: none; }
footer a:hover { color: white; }
footer h4 { color: white; font-size: 13px; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 12px; }
.foot-bottom { padding-top: 24px; border-top: 1px solid #1E293B; text-align: center; }