:root {
  --bg: #f6f3ee;
  --ink: #1f1c18;
  --muted: #6b645b;
  --line: #ddd5c9;
  --accent: #8a5a2b;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #171512; --ink: #efe9e1; --muted: #a59c90; --line: #35302a; --accent: #d49a5e; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}
a { color: var(--accent); }
.wrap { max-width: 680px; margin: 0 auto; padding: 0 20px; }
header.site { border-bottom: 1px solid var(--line); }
header.site .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { font-weight: 650; letter-spacing: -0.01em; color: var(--ink); text-decoration: none; display: flex; align-items: center; gap: 10px; }
nav a { color: var(--muted); text-decoration: none; margin-left: 18px; font-size: 15px; }
nav a:hover, nav a[aria-current] { color: var(--ink); }
.mark { width: 22px; height: 22px; }
.hero { padding: 96px 0 72px; }
.hero h1 { font-size: clamp(38px, 8vw, 56px); line-height: 1.05; letter-spacing: -0.03em; margin: 0 0 20px; font-weight: 700; }
.hero p { font-size: 20px; color: var(--muted); margin: 0 0 28px; max-width: 32em; }
.pill { display: inline-block; border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; font-size: 14px; color: var(--muted); }
.shelf { margin: 56px 0 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 3px solid var(--ink); border-radius: 2px; height: 180px; max-width: 420px; }
.shelf div { border-right: 3px solid var(--ink); background: linear-gradient(to bottom, transparent 0 32%, var(--ink) 32% calc(32% + 3px), transparent calc(32% + 3px) 64%, var(--ink) 64% calc(64% + 3px), transparent calc(64% + 3px)); }
.shelf div:last-child { border-right: 0; }
.shelf div.closed { background: color-mix(in srgb, var(--accent) 22%, transparent); }
article { padding: 48px 0 72px; }
article h1 { font-size: 34px; letter-spacing: -0.02em; margin: 0 0 6px; }
article .updated { color: var(--muted); margin: 0 0 32px; font-size: 15px; }
article h2 { font-size: 20px; margin: 36px 0 8px; }
article ul { padding-left: 1.2em; }
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
footer .wrap { padding: 24px 20px 40px; display: flex; flex-wrap: wrap; gap: 8px 18px; }
footer a { color: var(--muted); }