:root {
  --bg: #f6f1e8;
  --fg: #1a1410;
  --muted: #8a7d6e;
  --accent: #a0522d;
  --border: #e2dccf;
  --code-bg: #efe8d9;
  --warn-bg: #f5e8d2;
  --warn-border: #c8842a;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1410;
    --fg: #f0e6d4;
    --muted: #9b8d7b;
    --accent: #d2895a;
    --border: #3a2f25;
    --code-bg: #221a14;
    --warn-bg: #3a2a1a;
    --warn-border: #c8842a;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: 'Newsreader', 'Iowan Old Style', Georgia, 'Hiragino Mincho ProN',
    'Apple SD Gothic Neo', 'Noto Serif JP', 'Noto Serif KR', serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 740px;
  margin: 0 auto;
  padding: 56px 24px 96px;
}

header.page-head {
  border-bottom: 1px solid var(--border);
  padding-bottom: 28px;
  margin-bottom: 36px;
}

header.page-head .brand {
  font-family: 'JetBrains Mono', SFMono-Regular, Menlo, monospace;
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 12px;
}

header.page-head h1 {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 300;
  font-style: italic;
  font-size: 38px;
  line-height: 1.15;
  margin: 0 0 14px;
  letter-spacing: -0.5px;
}

header.page-head .meta {
  font-family: 'JetBrains Mono', SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  color: var(--muted);
  margin: 0;
}

header.page-head .lang-switch {
  margin-top: 14px;
  font-family: 'JetBrains Mono', SFMono-Regular, Menlo, monospace;
  font-size: 12px;
}

header.page-head .lang-switch a {
  color: var(--accent);
  text-decoration: none;
  margin-right: 6px;
}

header.page-head .lang-switch a:hover { text-decoration: underline; }
header.page-head .lang-switch strong { color: var(--fg); margin-right: 6px; }

h2 {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 22px;
  font-weight: 400;
  margin: 44px 0 14px;
  padding-top: 8px;
  scroll-margin-top: 24px;
}

h3 {
  font-family: 'Newsreader', Georgia, serif;
  font-weight: 500;
  font-size: 16px;
  margin: 26px 0 8px;
  color: var(--fg);
}

p, ul, ol { margin: 0 0 16px; }
ul, ol { padding-left: 22px; }
li { margin-bottom: 6px; }

a { color: var(--accent); }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0 26px;
  font-size: 14px;
}

th, td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--code-bg);
  font-weight: 600;
}

code {
  background: var(--code-bg);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 13px;
  font-family: 'JetBrains Mono', SFMono-Regular, Menlo, monospace;
}

.notice {
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  border-radius: 6px;
  padding: 16px 20px;
  margin: 24px 0;
  font-size: 14px;
}

.notice strong { display: block; margin-bottom: 4px; }

footer.page-foot {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  margin-top: 64px;
  font-family: 'JetBrains Mono', SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  color: var(--muted);
}

footer.page-foot a { color: var(--accent); text-decoration: none; }
footer.page-foot a:hover { text-decoration: underline; }