:root { --ink: #0b1220; --muted: #475569; --line: #e2e8f0; --brand: #1d4ed8; --bg: #ffffff; --soft: #f8fafc; }
@media (prefers-color-scheme: dark) { :root { --ink: #f1f5f9; --muted: #94a3b8; --line: #1e293b; --brand: #60a5fa; --bg: #0b1220; --soft: #111a2e; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
main { max-width: 820px; margin: 0 auto; padding: 32px 20px 48px; }
header.top { max-width: 820px; margin: 0 auto; padding: 20px 20px 0; display: flex; align-items: center; gap: 16px; }
header.top .brand { font-weight: 800; font-size: 20px; color: var(--ink); text-decoration: none; margin-right: auto; }
header.top a { color: var(--brand); text-decoration: none; }
.kicker { font-size: 13px; font-weight: 800; letter-spacing: 2px; color: var(--brand); }
h1 { font-size: 36px; line-height: 1.15; margin: 6px 0 8px; }
h2 { font-size: 20px; margin: 30px 0 8px; }
.lead { font-size: 19px; color: var(--muted); }
.muted { color: var(--muted); }
a { color: var(--brand); }
ul { padding-left: 22px; }
li { margin: 6px 0; }
.cta { display: inline-block; background: var(--brand); color: #fff; padding: 12px 20px; border-radius: 10px; font-weight: 700; text-decoration: none; margin: 12px 12px 0 0; }
.cta.ghost { background: transparent; color: var(--brand); border: 1px solid var(--line); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 14px; margin-top: 26px; }
.card { background: var(--soft); border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.box { background: var(--soft); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; }
code { font-size: 14px; }
footer { border-top: 1px solid var(--line); margin-top: 40px; padding-top: 16px; font-size: 14px; color: var(--muted); }
footer a { margin-right: 14px; }