:root {
  --bg: #fafaf8;
  --ink: #1c1c1c;
  --muted: #6b6b6b;
  --accent: #5a8cc8;
  --line: #e5e3dd;
  --max: 720px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  line-height: 1.6;
}
.wrap { max-width: var(--max); margin: 0 auto; padding: 3rem 1.25rem 6rem; }
.side { margin-bottom: 2rem; }
.brand { color: var(--accent); text-decoration: none; font-weight: 600; }
h1 { font-size: 1.9rem; margin-bottom: 0.25rem; }
.meta, .date { color: var(--muted); font-size: 0.85rem; }
article { margin-top: 1.5rem; }
article img { max-width: 100%; border-radius: 6px; }
article pre { background: #f0efe9; padding: 0.9rem; border-radius: 6px; overflow-x: auto; }
article code { background: #f0efe9; padding: 0.15rem 0.35rem; border-radius: 4px; }
a { color: var(--accent); }
.index-main h1 { margin-bottom: 2rem; }
.section { margin-bottom: 2rem; }
.section h2 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.4rem;
}
.section ul, .section-list { list-style: none; padding: 0; margin: 0.75rem 0 0; }
.section li, .section-list li { padding: 0.4rem 0; display: flex; justify-content: space-between; gap: 1rem; }