:root {
  --bg: #181512;
  --fg: #F4EEE2;
  --muted: #b8b0a3;
  --accent: #E2A23B;
  --card: #211d19;
  --border: #332e28;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Segoe UI", Roboto, sans-serif;
  line-height: 1.7;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 32px 20px 80px; }
header.site { display: flex; align-items: center; gap: 14px; padding: 8px 0 24px; }
header.site .mark {
  width: 44px; height: 44px; border-radius: 10px; background: var(--bg);
  border: 1px solid var(--border); display: grid; place-items: center;
  font-weight: 800; font-size: 24px; color: var(--fg);
}
header.site .mark .bar { display:block; width: 22px; height: 4px; border-radius: 2px; background: var(--accent); margin: 2px auto 0; }
header.site h1 { font-size: 20px; margin: 0; }
nav a { color: var(--accent); text-decoration: none; margin-right: 16px; font-size: 15px; }
nav a:hover { text-decoration: underline; }
hr { border: none; border-top: 1px solid var(--border); margin: 28px 0; }
h2 { font-size: 22px; margin-top: 36px; }
h3 { font-size: 17px; margin-top: 28px; }
a { color: var(--accent); }
code { background: var(--card); padding: 1px 6px; border-radius: 5px; font-size: 0.9em; }
.muted { color: var(--muted); font-size: 14px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 18px 20px; margin: 18px 0; }
.btn {
  display: inline-block; background: var(--accent); color: #181512; font-weight: 700;
  padding: 12px 20px; border-radius: 10px; text-decoration: none; margin-top: 8px;
}
ul { padding-left: 22px; }
footer { margin-top: 56px; color: var(--muted); font-size: 13px; }