:root {
  --bg: #111114;
  --fg: #ecece8;
  --muted: #9a9a94;
  --line: #2a2a2e;
  --accent: #c8f06c;
}
* { box-sizing: border-box; }
html, body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Hiragino Sans", "Noto Sans JP", sans-serif;
  line-height: 1.75;
  font-size: 16px;
}
a { color: var(--accent); }
header, main, footer {
  max-width: 40rem;
  margin: 0 auto;
  padding: 1rem 1.1rem;
}
header {
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  justify-content: space-between;
  align-items: center;
}
.brand {
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--fg);
  text-decoration: none;
  font-size: 1.05rem;
}
.nav-links { display: flex; flex-wrap: wrap; gap: 0.75rem 1rem; }
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.nav-links a:hover { color: var(--fg); }
.muted { color: var(--muted); font-size: 0.92rem; }
h1 { font-size: 1.55rem; line-height: 1.4; margin: 1.25rem 0 0.75rem; }
h2 { font-size: 1.12rem; margin-top: 1.75rem; }
.list { list-style: none; padding: 0; margin: 1.25rem 0; }
.list li {
  border-top: 1px solid var(--line);
  padding: 0.9rem 0;
}
.list a { text-decoration: none; font-weight: 600; color: var(--fg); }
.list a:hover { color: var(--accent); }
.list p { margin: 0.25rem 0 0; color: var(--muted); font-size: 0.92rem; }
article p { margin: 0.85rem 0; }
footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 2rem;
}
.note {
  border: 1px solid var(--line);
  padding: 0.85rem 1rem;
  margin: 1.5rem 0;
  color: var(--muted);
  font-size: 0.9rem;
}
.badge {
  display: inline-block;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.78rem;
  padding: 0.15rem 0.45rem;
  margin-bottom: 0.5rem;
}
.crumb {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0 0 0.4rem;
}
.crumb a { color: var(--muted); text-decoration: none; }
.crumb a:hover { color: var(--fg); }
.page-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.55rem;
  align-items: center;
  margin: 0 0 1rem;
}
.page-meta .badge { margin-bottom: 0; }
.page-meta time { color: var(--muted); font-size: 0.82rem; }
.toc {
  margin: 1rem 0 1.5rem;
  padding-left: 1.2rem;
}
.toc a { color: var(--fg); }
h3 { font-size: 1rem; margin-top: 1.25rem; }
.attr-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  margin: 1rem 0 1.25rem;
}
.attr-table th,
.attr-table td {
  border-bottom: 1px solid var(--line);
  text-align: left;
  padding: 0.5rem 0.35rem;
  vertical-align: top;
}
.attr-table th { color: var(--muted); font-weight: 600; }
.next-reads { margin-top: 2rem; }
.faq h3 { margin-bottom: 0.35rem; }
@media (max-width: 480px) {
  html, body { font-size: 16px; }
  h1 { font-size: 1.35rem; }
  header, main, footer { padding: 0.9rem 1rem; }
}