:root {
  --bg: #f7f7f5;
  --surface: #ffffff;
  --text: #1c1c1a;
  --muted: #61615c;
  --border: #dcdcd6;
  --accent: #8a2f2f;
  --accent-soft: #f0e6e3;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17171a;
    --surface: #1f1f23;
    --text: #e8e8e4;
    --muted: #a0a09a;
    --border: #35353b;
    --accent: #e0918b;
    --accent-soft: #2b2224;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP",
               "Meiryo", system-ui, -apple-system, sans-serif;
  line-height: 1.75;
  font-size: 16px;
}

.wrap {
  max-width: 46rem;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

header { border-bottom: 2px solid var(--border); padding-bottom: 1.25rem; }

.eyebrow {
  margin: 0 0 .45rem;
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--text);
}

h1 { margin: 0; font-size: 1.6rem; line-height: 1.45; font-weight: 700; }
h1 .term { display: block; font-size: 1.05rem; color: var(--muted); font-weight: 600; }

h2 {
  margin: 2.5rem 0 .75rem;
  font-size: 1.1rem;
  font-weight: 700;
  padding-left: .6rem;
  border-left: 4px solid var(--accent);
}

.note { color: var(--muted); font-size: .9rem; margin: .75rem 0 0; }

/* 日程リスト */
.schedule { list-style: none; margin: 1rem 0 0; padding: 0; }
.schedule li {
  display: flex;
  flex-wrap: wrap;
  gap: .25rem 1rem;
  padding: .55rem 0;
  border-bottom: 1px dashed var(--border);
}
.schedule li:last-child { border-bottom: none; }
.schedule time {
  flex: 0 0 11rem;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
}

/* カード型ナビゲーション */
.nav { list-style: none; margin: 1rem 0 0; padding: 0; display: grid; gap: .6rem; }
@media (min-width: 34rem) { .nav { grid-template-columns: 1fr 1fr; } }
.nav a {
  display: block;
  padding: .85rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: .5rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
}
.nav a:hover, .nav a:focus-visible {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.nav a small { display: block; font-weight: 400; font-size: .8rem; color: var(--muted); }

/* テキスト一覧 */
.texts { list-style: none; margin: 1rem 0 0; padding: 0; }
.texts li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .3rem .8rem;
  padding: .7rem 0;
  border-bottom: 1px dashed var(--border);
}
.texts li:last-child { border-bottom: none; }
.texts .no {
  flex: 0 0 3.2rem;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.texts .title { flex: 1 1 16rem; }
.texts .links { flex: 0 0 auto; display: flex; gap: .5rem; }
.texts .links a {
  font-size: .82rem;
  padding: .15rem .6rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--accent);
  text-decoration: none;
  white-space: nowrap;
}
.texts .links a:hover, .texts .links a:focus-visible {
  border-color: var(--accent);
  background: var(--accent-soft);
}

/* 戻るリンク */
.back { margin-top: 2.5rem; }
.back a { color: var(--accent); text-decoration: none; font-weight: 600; }
.back a:hover { text-decoration: underline; }

footer {
  margin-top: 3rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  font-size: .9rem;
  color: var(--muted);
}
footer a { color: var(--accent); }