:root {
  --bg: #fbfaf7;
  --ink: #1c1a17;
  --muted: #6b6459;
  --accent: #b5502f;
  --card: #ffffff;
  --border: #e8e3da;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #171512;
    --ink: #f2efe9;
    --muted: #a49a8c;
    --accent: #e08a5f;
    --card: #201d19;
    --border: #332e28;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "PingFang SC", sans-serif;
  line-height: 1.6;
}
.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 20px 80px;
}
header.top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 40px;
}
header.top .mark {
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--accent);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 18px;
}
header.top a { color: var(--ink); text-decoration: none; font-weight: 600; font-size: 18px; }
h1 { font-size: 28px; margin: 0 0 8px; }
h2 { font-size: 15px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin: 40px 0 12px; }
p.tagline { color: var(--muted); font-size: 17px; margin: 0 0 32px; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 22px;
  margin-bottom: 14px;
}
.links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }
.links a {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  color: var(--ink);
  text-decoration: none;
  font-size: 15px;
}
.links a:hover { border-color: var(--accent); color: var(--accent); }
ul { padding-left: 20px; }
li { margin-bottom: 8px; }
ol { padding-left: 22px; }
ol li { margin-bottom: 14px; }
footer {
  margin-top: 56px;
  color: var(--muted);
  font-size: 13px;
  border-top: 1px solid var(--border);
  padding-top: 20px;
}
footer a { color: var(--muted); }
.lang-section { margin-bottom: 40px; }
.lang-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 999px;
  padding: 3px 10px;
  margin-bottom: 14px;
}
.backlink { display: inline-block; margin-bottom: 24px; color: var(--muted); text-decoration: none; font-size: 14px; }
.backlink:hover { color: var(--accent); }