:root {
  --ink: #16324f;
  --ink-soft: #2c5a86;
  --accent: #a62a66;
  --paper: #f7f4ed;
  --card: #ffffff;
  --text: #1b2430;
  --muted: #4a5868;
  --rule: #e2dccd;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #9ec3ea;
    --ink-soft: #9ec3ea;
    --accent: #f0a9cb;
    --paper: #0e1620;
    --card: #17222f;
    --text: #e8edf3;
    --muted: #b3c0cd;
    --rule: #263445;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font: 17px/1.6 "Atkinson Hyperlegible", -apple-system, "Segoe UI", Roboto, sans-serif;
}
.band { background: var(--ink); color: #fff; }
@media (prefers-color-scheme: dark) { .band { background: #16324f; } }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }
header.band .wrap { display: flex; align-items: center; gap: 14px; padding-top: 18px; padding-bottom: 18px; }
header img { width: 44px; height: 44px; border-radius: 10px; }
header a.home { color: #fff; text-decoration: none; font-weight: 700; font-size: 20px; }
nav { margin-left: auto; display: flex; gap: 16px; flex-wrap: wrap; }
nav a { color: #dbe7f4; text-decoration: none; font-size: 15px; }
nav a:hover { text-decoration: underline; }
main { padding: 28px 0 56px; }
h1 { font-size: 30px; line-height: 1.25; margin: 0 0 6px; color: var(--ink); }
h2 { font-size: 20px; margin: 30px 0 8px; color: var(--ink); }
.stamp { color: var(--muted); font-size: 15px; margin: 0 0 22px; }
.card { background: var(--card); border: 1px solid var(--rule); border-radius: 14px; padding: 18px 20px; margin: 18px 0; }
.card.note { border-left: 4px solid var(--accent); }
a { color: var(--ink-soft); }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--rule); vertical-align: top; }
footer { border-top: 1px solid var(--rule); color: var(--muted); font-size: 14px; padding: 18px 0 40px; }
.feature { display: grid; grid-template-columns: 1fr; gap: 12px; }
@media (min-width: 640px) { .feature { grid-template-columns: 1fr 1fr 1fr; } }