:root {
  --cream: #fdf6e8;
  --cream2: #f5e6c8;
  --paper: #fffaf0;
  --ink: #3a2a1a;
  --brown: #8a6a4a;
  --muted: #a08868;
  --orange: #c87840;
  --red: #d96d5d;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Hiragino Sans", sans-serif;
  line-height: 1.7;
  font-size: 16px;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px;
}

header.brand {
  text-align: center;
  margin-bottom: 36px;
}
header.brand a {
  color: var(--brown);
  text-decoration: none;
  font-weight: 600;
  font-size: 18px;
}
header.brand small {
  display: block;
  color: var(--muted);
  font-size: 12px;
  margin-top: 4px;
}

main h1 {
  font-size: 28px;
  font-weight: 800;
  color: var(--ink);
  margin: 0 0 12px;
}
main h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  margin: 36px 0 12px;
  padding-top: 12px;
}
main h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--brown);
  margin: 28px 0 8px;
}

main p { margin: 0 0 14px; }
main ul, main ol { margin: 0 0 18px 22px; padding: 0; }
main li { margin-bottom: 6px; }
main strong { color: var(--ink); }
main em { color: var(--muted); }
main hr {
  border: none;
  border-top: 1px solid var(--cream2);
  margin: 32px 0;
}

main a {
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px dashed var(--orange);
}
main a:hover { border-bottom-style: solid; }

footer.brand {
  text-align: center;
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--cream2);
  color: var(--muted);
  font-size: 13px;
}
footer.brand a {
  color: var(--muted);
  text-decoration: none;
  margin: 0 12px;
}
footer.brand a:hover { color: var(--brown); }

@media (max-width: 540px) {
  .container { padding: 32px 18px; }
  main h1 { font-size: 24px; }
  main h2 { font-size: 19px; }
}