:root {
  --ink: #1d2a33;
  --muted: #5b6b75;
  --accent: #1f6f78;
  --accent-soft: #e6f1f2;
  --line: #dfe6e9;
  --bg: #fbfcfc;
  --card: #ffffff;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: "Source Sans 3", "Segoe UI", Arial, sans-serif;
  font-size: 18px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
}
a { color: var(--accent); }
.wrap { max-width: 980px; margin: 0 auto; padding: 0 20px; }

header.site {
  background: var(--card);
  border-bottom: 1px solid var(--line);
}
header.site .wrap {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 8px 24px; padding-top: 16px; padding-bottom: 16px;
}
.brand { text-decoration: none; color: var(--ink); }
.brand strong { display: block; font-family: Georgia, "Times New Roman", serif; font-size: 22px; font-weight: 600; }
.brand span { font-size: 14px; color: var(--muted); letter-spacing: .04em; text-transform: uppercase; }
nav a { margin-left: 18px; font-size: 16px; text-decoration: none; color: var(--ink); }
nav a:first-child { margin-left: 0; }
nav a:hover, nav a[aria-current="page"] { color: var(--accent); text-decoration: underline; }

.hero { background: var(--accent-soft); border-bottom: 1px solid var(--line); }
.hero .wrap { padding-top: 56px; padding-bottom: 56px; }
.hero h1 { font-family: Georgia, "Times New Roman", serif; font-weight: 600; font-size: 40px; line-height: 1.2; margin: 0 0 12px; }
.hero p { margin: 0 0 24px; font-size: 20px; color: var(--muted); max-width: 640px; }
.btn {
  display: inline-block; background: var(--accent); color: #fff; text-decoration: none;
  padding: 12px 22px; border-radius: 6px; font-weight: 600; font-size: 18px;
}
.btn:hover { background: #185a61; }

main .wrap { padding-top: 40px; padding-bottom: 40px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 22px 24px; }
.card h2 { font-size: 20px; margin: 0 0 10px; }
.card p, .card ul { margin: 0; }
.card ul { padding-left: 20px; }
dl.info { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 6px 16px; }
dl.info dt { color: var(--muted); }
dl.info dd { margin: 0; }

.doc h1 { font-family: Georgia, "Times New Roman", serif; font-weight: 600; font-size: 34px; margin: 0 0 6px; }
.doc .updated { color: var(--muted); margin: 0 0 28px; }
.doc h2 { font-size: 22px; margin: 32px 0 8px; }
.doc { max-width: 760px; }
.note { background: var(--accent-soft); border-left: 4px solid var(--accent); padding: 14px 18px; border-radius: 4px; }

footer.site { border-top: 1px solid var(--line); background: var(--card); font-size: 15px; color: var(--muted); }
footer.site .wrap { padding-top: 24px; padding-bottom: 28px; display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; }
footer.site a { color: var(--muted); }

@media (max-width: 600px) {
  body { font-size: 17px; }
  .hero h1 { font-size: 30px; }
  .hero .wrap { padding-top: 36px; padding-bottom: 36px; }
  nav a { margin-left: 12px; }
}