:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --fg: #0f172a;
  --muted: #475569;
  --subtle: #64748b;
  --border: #e2e8f0;
  --primary: #2563eb;
  --primary-soft: #eff6ff;
  --navy: #0b1220;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #020617;
    --surface: #0f172a;
    --fg: #f1f5f9;
    --muted: #cbd5e1;
    --subtle: #94a3b8;
    --border: #1e293b;
    --primary: #60a5fa;
    --primary-soft: #172554;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--primary); }
a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.site-header .inner, main, .site-footer .inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 20px;
}
.site-header .inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--fg); text-decoration: none; font-weight: 700; font-size: 18px; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
nav { display: flex; gap: 18px; font-size: 15px; }
nav a { text-decoration: none; color: var(--muted); }
nav a[aria-current="page"] { color: var(--primary); font-weight: 600; }

main { padding-top: 32px; padding-bottom: 48px; }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 6px; letter-spacing: -0.01em; }
h2 { font-size: 20px; margin: 36px 0 8px; }
h3 { font-size: 16px; margin: 20px 0 4px; }
p, li { color: var(--muted); }
strong { color: var(--fg); }
ul { padding-left: 22px; }
li { margin: 4px 0; }
.meta { color: var(--subtle); font-size: 14px; margin: 0 0 24px; }

.summary {
  background: var(--primary-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 20px;
  margin: 0 0 8px;
}
.summary p { margin: 0 0 6px; color: var(--fg); }
.summary ul { margin: 0; }

table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 15px; }
th, td { text-align: left; vertical-align: top; padding: 10px 12px; border-bottom: 1px solid var(--border); }
th { color: var(--subtle); font-weight: 600; font-size: 13px; text-transform: uppercase; letter-spacing: 0.03em; }
td { color: var(--muted); }
.table-wrap { overflow-x: auto; }

.hero { text-align: center; padding: 40px 0 8px; }
.hero img { width: 112px; height: 112px; border-radius: 26px; box-shadow: 0 10px 30px rgb(15 23 42 / 0.25); }
.hero h1 { font-size: 36px; margin-top: 20px; }
.hero p { font-size: 18px; max-width: 520px; margin: 8px auto 0; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; margin-top: 36px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 16px; }
.card h3 { margin: 0 0 4px; }
.card p { margin: 0; font-size: 15px; }

.site-footer { border-top: 1px solid var(--border); color: var(--subtle); font-size: 14px; }
.site-footer .inner { padding-top: 20px; padding-bottom: 28px; display: flex; gap: 16px; justify-content: space-between; flex-wrap: wrap; }
.site-footer a { color: var(--subtle); }

@media (max-width: 480px) {
  h1 { font-size: 26px; }
  .hero h1 { font-size: 30px; }
}