:root {
  --bg: #fbfaf7; --surface: #ffffff; --text: #1a1a1a; --muted: #5b5b5b; --line: #e6e2da;
  --accent: #4a7c9e; --accent-ink: #3d6783; color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #121212; --surface: #1c1c1c; --text: #f2f0eb; --muted: #b3b0a8; --line: #2e2e2e; --accent: #6999b9; --accent-ink: #8db6d1; }
  .logo-light { display: none; } .logo-dark { display: inline; }
}
@media (prefers-color-scheme: light) { .logo-dark { display: none; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent-ink); }
header, main, footer { max-width: 760px; margin: 0 auto; padding: 0 20px; }
header { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 24px; padding-bottom: 8px; }
header img { height: 36px; width: auto; }
nav a { margin-left: 16px; text-decoration: none; color: var(--muted); font-size: 15px; }
main { padding-top: 16px; padding-bottom: 48px; }
h1 { font-size: 34px; line-height: 1.2; margin: 24px 0 8px; }
h2 { font-size: 22px; margin: 36px 0 8px; }
.lead { font-size: 20px; color: var(--muted); }
.updated { color: var(--muted); font-size: 15px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 20px 24px; margin: 16px 0; }
.button { display: inline-block; background: var(--accent); color: #fff; text-decoration: none; padding: 12px 22px; border-radius: 999px; font-weight: 600; margin: 8px 8px 0 0; }
.button.secondary { background: transparent; color: var(--accent-ink); border: 1px solid var(--accent); }
footer { border-top: 1px solid var(--line); padding-top: 20px; padding-bottom: 40px; color: var(--muted); font-size: 14px; }
footer a { color: var(--muted); margin-right: 14px; }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
th, td { text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); padding: 8px 10px 8px 0; }