/* scripts/build-pages.mjs が生成。直接編集しないこと。 */
:root {
  --primary: #4f46e5; --primary-dark: #4338ca; --primary-soft: #eef2ff;
  --ink: #0f172a; --ink-soft: #475569; --ink-faint: #94a3b8;
  --bg: #f1f5f9; --card: #ffffff; --line: #e2e8f0;
  --ok: #16a34a; --ok-soft: #f0fdf4;
  --radius: 14px; --shadow: 0 1px 2px rgba(15,23,42,.04), 0 4px 16px rgba(15,23,42,.06);
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink); line-height: 1.9;
  font-family: "Hiragino Sans", "Yu Gothic UI", "Yu Gothic", "Meiryo", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.header { background: var(--card); border-bottom: 1px solid var(--line); }
.header-inner { max-width: 760px; margin: 0 auto; padding: 14px 20px; display: flex; align-items: center; gap: 10px; }
.logo {
  width: 34px; height: 34px; border-radius: 10px; background: var(--primary); color: #fff;
  display: grid; place-items: center; font-weight: 700; flex: none;
}
.header a.site { color: inherit; text-decoration: none; font-weight: 700; font-size: 1.05rem; }
main { max-width: 760px; margin: 0 auto; padding: 28px 20px 60px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 28px 28px 32px; }
h1 { font-size: 1.5rem; margin: 0 0 6px; }
.updated { color: var(--ink-faint); font-size: .85rem; margin: 0 0 24px; }
h2 { font-size: 1.08rem; margin: 30px 0 8px; padding-left: 11px; border-left: 4px solid var(--primary); }
h2:first-of-type { margin-top: 12px; }
p, li { color: var(--ink-soft); }
p { margin: 0 0 12px; }
ul, ol { margin: 0 0 12px; padding-left: 1.4em; }
li { margin-bottom: 5px; }
a { color: var(--primary-dark); }
dl { margin: 0; }
dt { font-weight: 700; color: var(--ink); margin-top: 14px; }
dd { margin: 2px 0 0; color: var(--ink-soft); }
.note { background: var(--primary-soft); border-radius: 10px; padding: 14px 18px; margin: 0 0 20px; }
.note p:last-child { margin-bottom: 0; }
.footer { max-width: 760px; margin: 0 auto; padding: 22px 20px 40px; color: var(--ink-faint); font-size: .82rem; text-align: center; }
.footer nav { margin-bottom: 8px; display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.footer a { color: var(--ink-soft); text-decoration: none; }
.footer a:hover { text-decoration: underline; }
@media (max-width: 600px) { .card { padding: 22px 18px 26px; } h1 { font-size: 1.3rem; } }

/* ---------- 以下は scripts/build-ssg.mjs が生成する問題ページ用 ---------- */
.breadcrumb { max-width: 760px; margin: 0 auto; padding: 14px 20px 0; font-size: .78rem; color: var(--ink-faint); }
.breadcrumb ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.breadcrumb li:not(:last-child)::after { content: "›"; margin-left: 6px; color: var(--ink-faint); }
.breadcrumb a { color: var(--ink-soft); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.tag { display: inline-block; background: var(--primary-soft); color: var(--primary); border-radius: 999px; padding: 2px 12px; font-size: .72rem; font-weight: 700; margin-bottom: 12px; }
.question-text { font-size: 1.02rem; color: var(--ink); margin: 0; white-space: pre-wrap; }
.overline { text-decoration: overline; padding: 0 1px; }
.figure { border: 1px solid var(--line); border-radius: 10px; padding: 10px; margin-top: 14px; background: #fff; overflow-x: auto; }
.figure img { display: block; margin: 0 auto; max-width: 100%; height: auto; }
.source { margin: 14px 0 0; font-size: .74rem; color: var(--ink-faint); text-align: right; }
.choices { list-style: none; margin: 20px 0 0; padding: 0; }
.choices li { display: flex; gap: 10px; align-items: flex-start; border: 1px solid var(--line); border-radius: 10px; padding: 11px 14px; margin-bottom: 8px; background: #fff; color: var(--ink); }
.choices li.is-answer { border-color: var(--ok); background: var(--ok-soft); }
.choice-label { flex: none; width: 22px; height: 22px; border-radius: 50%; background: var(--line); color: var(--ink-soft); font-size: .74rem; font-weight: 700; display: grid; place-items: center; margin-top: 2px; }
.choices li.is-answer .choice-label, .choice-notes li.is-answer .choice-label { background: var(--ok); color: #fff; }
.verdict { margin: 24px 0 0; font-weight: 700; color: var(--ok); font-size: 1.05rem; }
.explanation h2 { margin-top: 22px; }
.choice-notes { list-style: none; margin: 0; padding: 0; }
.choice-notes li { display: flex; gap: 10px; align-items: flex-start; background: #f8fafc; border-radius: 10px; padding: 10px 14px; margin-bottom: 7px; font-size: .93rem; }
.choice-notes li.is-answer { background: var(--ok-soft); }
.pager { display: flex; justify-content: space-between; gap: 12px; margin-top: 26px; font-size: .87rem; }
.pager a { color: var(--primary-dark); text-decoration: none; font-weight: 600; }
.pager a:hover { text-decoration: underline; }
.pager span { color: var(--ink-faint); }
.cta { display: block; margin-top: 22px; text-align: center; background: var(--primary); color: #fff; text-decoration: none; font-weight: 700; border-radius: 10px; padding: 13px; }
.cta:hover { background: var(--primary-dark); }
.qlist, .slist { list-style: none; margin: 16px 0 0; padding: 0; }
.qlist li, .slist li { border-bottom: 1px solid var(--line); }
.qlist a, .slist a { display: flex; gap: 12px; align-items: baseline; padding: 11px 4px; text-decoration: none; color: var(--ink-soft); }
.qlist a:hover, .slist a:hover { background: var(--primary-soft); }
.qnum { flex: none; font-weight: 700; color: var(--primary); font-size: .82rem; min-width: 3.6em; }
.qtext { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.scount { flex: none; margin-left: auto; color: var(--ink-faint); font-size: .78rem; }
.exam-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 10px; margin-top: 16px; }
.exam-grid a { border: 1px solid var(--line); border-radius: 10px; padding: 13px 15px; text-decoration: none; background: #fff; }
.exam-grid a:hover { border-color: var(--primary); background: var(--primary-soft); }
.exam-grid strong { display: block; color: var(--ink); font-size: .95rem; }
.exam-grid span { color: var(--ink-faint); font-size: .78rem; }