:root {
  --bg: #fbf7f3;
  --fg: #3b2a22;
  --muted: #7a6558;
  --card: #ffffff;
  --line: #eadfd6;
  --accent: #c8553d;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1f1915;
    --fg: #f3e9e1;
    --muted: #bba89b;
    --card: #2a221d;
    --line: #3d322b;
    --accent: #f08a6c;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }
.site-header { border-bottom: 1px solid var(--line); background: var(--card); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 56px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; color: var(--fg); text-decoration: none; }
.brand img { border-radius: 7px; }
.lang, .lang a { color: var(--muted); font-size: 14px; }
main { padding: 24px 0 48px; }
section + section { margin-top: 48px; padding-top: 32px; border-top: 1px solid var(--line); }
h1 { font-size: 28px; line-height: 1.25; margin: 0 0 12px; }
h2 { font-size: 20px; margin: 28px 0 8px; }
h3 { font-size: 17px; margin: 20px 0 4px; }
p, li { max-width: 68ch; }
ul { padding-left: 1.25em; }
a { color: var(--accent); }
.intro { font-size: 17px; }
.meta { color: var(--muted); font-size: 14px; }
.contact { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; }
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; padding: 16px 0 32px; }
footer a { color: var(--muted); }