/* 入口の見た目。クイズ（quiz.nbamatsudo.jp）と同じ藍 → 紫の色を、白い面の上でアクセントに使う */
:root {
  --ink: #1e1b4b;
  --muted: #4b5563;
  --accent: #4338ca;
  --accent-2: #6d28d9;
  --line: #e5e7eb;
  --bg: #f8fafc;
  --card: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #eef2ff;
    --muted: #c7d2fe;
    --accent: #a5b4fc;
    --accent-2: #c4b5fd;
    --line: #312e81;
    --bg: #0f0d24;
    --card: #1b1840;
  }
}

* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family:
    system-ui, -apple-system, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic UI", "Yu Gothic",
    Meiryo, sans-serif;
  line-height: 1.8;
}
a {
  color: var(--accent);
}
.wrap {
  max-width: 44rem;
  margin: 0 auto;
  padding: 0 1rem;
}

header.hero {
  background: linear-gradient(180deg, #4338ca 0%, #6d28d9 100%);
  color: #fff;
  padding: 3.5rem 0 3rem;
}
header.hero .site {
  margin: 0;
  font-size: 0.875rem;
  letter-spacing: 0.08em;
  opacity: 0.85;
}
header.hero .site a {
  color: inherit;
  text-decoration: none;
}
header.hero h1 {
  margin: 0.5rem 0 0.75rem;
  font-size: clamp(1.6rem, 6vw, 2.25rem);
  line-height: 1.4;
}
header.hero p {
  margin: 0;
  opacity: 0.92;
}

/* .wrap（左右の余白）と同じ要素なので、上下と左右をまとめて書く（main だけだと .wrap の padding に負ける） */
main.wrap {
  padding: 2.5rem 1rem 3rem;
}
section + section {
  margin-top: 2.5rem;
}
h2 {
  font-size: 1.25rem;
  margin: 0 0 1rem;
  padding-left: 0.75rem;
  border-left: 4px solid var(--accent-2);
  line-height: 1.5;
}
h3 {
  font-size: 1.05rem;
  margin: 1.75rem 0 0.5rem;
}

.card {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 1.25rem;
}
.card img {
  flex: none;
  width: 72px;
  height: 72px;
  border-radius: 1rem;
}
.card h3 {
  margin: 0;
}
.card p {
  margin: 0.25rem 0 0;
  color: var(--muted);
}
.card ul {
  margin: 0.5rem 0 0;
  padding-left: 1.25rem;
  color: var(--muted);
}
.button {
  display: inline-block;
  margin-top: 0.75rem;
  padding: 0.5rem 1.25rem;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
}
@media (prefers-color-scheme: dark) {
  .button {
    color: #0f0d24;
  }
}
@media (max-width: 30rem) {
  .card {
    flex-direction: column;
  }
}

.table-wrap {
  overflow-x: auto;
}
table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.9rem;
}
th,
td {
  border: 1px solid var(--line);
  padding: 0.5rem 0.75rem;
  text-align: left;
  vertical-align: top;
}
th {
  background: var(--card);
}

footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 2.5rem;
  font-size: 0.875rem;
  color: var(--muted);
}
footer ul {
  list-style: none;
  margin: 0 0 0.5rem;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
}
footer p {
  margin: 0;
}