:root {
  --bg: #fafaf7;
  --surface: #ffffff;
  --text: #1f2328;
  --muted: #5d6670;
  --border: #e3e3dc;
  --accent: #1f6f5c;
  --accent-soft: #e6f2ee;
  --note-bg: #f3f1ea;
  --radius: 10px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15181b;
    --surface: #1d2125;
    --text: #e6e8ea;
    --muted: #9aa3ab;
    --border: #30363c;
    --accent: #5cc3a6;
    --accent-soft: #1f3530;
    --note-bg: #22272b;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic UI", Meiryo, sans-serif;
  line-height: 1.8;
  font-size: 16px;
}
a { color: var(--accent); }
main { max-width: 760px; margin: 0 auto; padding: 0 16px 48px; }

.site-header {
  max-width: 760px; margin: 0 auto; padding: 16px;
  display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: baseline; justify-content: space-between;
}
.site-name { font-weight: 700; font-size: 18px; color: var(--text); text-decoration: none; }
.site-header nav a { margin-left: 16px; font-size: 14px; color: var(--muted); text-decoration: none; }
.site-header nav a:first-child { margin-left: 0; }
.site-header nav a:hover { color: var(--accent); }

.hero { padding: 24px 0 8px; }
.hero h1 { font-size: 26px; margin: 0 0 8px; }
.hero p { color: var(--muted); margin: 0; }
section > h2 { font-size: 18px; margin: 32px 0 12px; padding-bottom: 6px; border-bottom: 2px solid var(--border); }
.empty { color: var(--muted); }

.page-title { font-size: 24px; margin: 8px 0 16px; line-height: 1.4; }
.list-title { font-size: 15px; color: var(--muted); margin: 20px 0 8px; }
.tabs { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 6px; }
.tabs a {
  padding: 6px 12px; border: 1px solid var(--border); border-radius: 999px;
  background: var(--surface); color: var(--text); text-decoration: none; font-size: 14px; white-space: nowrap;
}
.tabs a:hover { border-color: var(--accent); }
.tabs a.current { background: var(--accent); border-color: var(--accent); color: var(--bg); font-weight: 600; }
.tabs .count { margin-left: 6px; font-size: 12px; opacity: .7; }
.band-note { font-size: 12px; color: var(--muted); margin: 0 0 8px; }
.pill {
  display: inline-block; margin-left: 8px; padding: 0 8px; border-radius: 999px;
  background: var(--accent-soft); color: var(--accent); font-size: 12px;
}

.cards { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.card a {
  display: block; padding: 16px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--surface); color: var(--text); text-decoration: none;
}
.card a:hover { border-color: var(--accent); }
.card-head { display: flex; justify-content: space-between; align-items: center; }
.card h3 { margin: 4px 0 0; font-size: 19px; }
.card .catch { margin: 0 0 6px; color: var(--accent); font-weight: 600; font-size: 15px; }
.card .summary { margin: 0 0 8px; font-size: 14px; color: var(--muted); }
.card .meta { margin: 0; font-size: 13px; color: var(--muted); }
.code { font-size: 13px; color: var(--muted); font-weight: 400; }
.score { font-weight: 700; font-size: 22px; color: var(--accent); }
.score small { font-size: 12px; font-weight: 400; margin-left: 2px; color: var(--muted); }

.breadcrumb { font-size: 13px; color: var(--muted); margin: 16px 0 0; }
.breadcrumb a { color: var(--muted); }
.article h1 { font-size: 26px; margin: 8px 0 0; line-height: 1.4; }
.article > .catch { margin: 4px 0 16px; color: var(--accent); font-weight: 600; }
.score-box {
  display: flex; flex-wrap: wrap; gap: 4px 16px; align-items: baseline;
  padding: 12px 16px; border-radius: var(--radius); background: var(--accent-soft); margin-bottom: 24px;
}
.score-box .score { font-size: 28px; }
.score-detail { margin: 0; font-size: 14px; color: var(--muted); }
.article h2 { font-size: 21px; margin: 40px 0 12px; padding-left: 10px; border-left: 4px solid var(--accent); line-height: 1.4; }
.article h3 { font-size: 17px; margin: 28px 0 8px; }
.article blockquote {
  margin: 0 0 16px; padding: 12px 16px; background: var(--note-bg); border-radius: var(--radius);
  font-size: 14px; color: var(--muted);
}
.article blockquote p { margin: 0; }
.article li { margin-bottom: 8px; }
.article hr { border: 0; border-top: 1px solid var(--border); margin: 32px 0 16px; }
.article hr + p { font-size: 13px; color: var(--muted); }
.article a { word-break: break-all; }

.table-wrap { overflow-x: auto; margin: 0 0 16px; }
table { border-collapse: collapse; width: 100%; font-size: 14px; background: var(--surface); }
th, td { padding: 8px 10px; border: 1px solid var(--border); text-align: left; vertical-align: top; }
th { background: var(--note-bg); white-space: nowrap; }

.site-footer {
  max-width: 760px; margin: 0 auto; padding: 24px 16px 40px;
  border-top: 1px solid var(--border); font-size: 12px; color: var(--muted);
}
.site-footer p { margin: 0 0 6px; }
.site-footer a { color: var(--muted); }