:root { --ink: #1b1d21; --muted: #5b6270; --line: #e4e6eb; --bg: #ffffff; --soft: #f5f6f8; --accent: #1f6f5c; --accent-ink: #ffffff; }
@media (prefers-color-scheme: dark) {
  :root { --ink: #e8eaee; --muted: #a3a9b5; --line: #2c3038; --bg: #14161a; --soft: #1c1f24; --accent: #4fb89c; --accent-ink: #0d1412; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }
a { color: var(--accent); }
.top { border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { font-weight: 700; font-size: 20px; color: var(--ink); text-decoration: none; letter-spacing: -0.01em; }
nav a { margin-left: 20px; color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--ink); }
main { padding: 40px 16px 24px; }
h1 { font-size: 34px; line-height: 1.2; letter-spacing: -0.02em; margin: 0 0 16px; }
h2 { font-size: 23px; margin: 40px 0 10px; }
h3 { font-size: 18px; margin: 26px 0 6px; }
.lead { font-size: 19px; color: var(--muted); }
.cta { display: inline-block; background: var(--accent); color: var(--accent-ink); padding: 11px 20px; border-radius: 8px; text-decoration: none; font-weight: 600; margin: 8px 0; }
.box { background: var(--soft); border: 1px solid var(--line); border-radius: 10px; padding: 16px 20px; margin: 24px 0; }
.cards { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.cards a { display: block; border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; text-decoration: none; color: var(--ink); }
.cards a:hover { border-color: var(--accent); }
.cards small { display: block; color: var(--muted); }
table { border-collapse: collapse; width: 100%; font-size: 15px; margin: 12px 0; }
th, td { border-bottom: 1px solid var(--line); padding: 8px 6px; text-align: left; vertical-align: top; }
.meta { color: var(--muted); font-size: 14px; }
.foot { border-top: 1px solid var(--line); margin-top: 48px; padding-top: 16px; padding-bottom: 32px; color: var(--muted); font-size: 14px; }
code { background: var(--soft); padding: 1px 5px; border-radius: 4px; }
@media (max-width: 520px) { h1 { font-size: 27px; } nav a { margin-left: 14px; } }