/* KEIRIN HEX（keirinhex.jp）の最初のページ。色は X の画像（docs/brand/keirin-x/make_images.py）と同じ。外部読み込みなし。 */
:root {
  --bg: #100609;
  --bg2: #280b12;
  --text: #f4f0ec;
  --muted: #c9bfba;
  --red: #e8333a;
  --amber: #ffb238;
  --line: rgba(255, 255, 255, .14);
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic UI", "Meiryo", sans-serif;
  line-height: 1.8;
}
a { color: var(--amber); }
.top {
  border-bottom: 1px solid var(--line);
  background: var(--bg2);
  padding: 10px 16px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  letter-spacing: .08em;
  text-decoration: none;
}
.brand img { border-radius: 50%; }
main { max-width: 760px; margin: 0 auto; padding: 24px 16px 40px; }
h1 { font-size: 1.7rem; line-height: 1.4; margin: 8px 0 12px; }
h2 {
  font-size: 1.2rem;
  margin: 36px 0 8px;
  padding-left: 10px;
  border-left: 4px solid var(--red);
}
.lead { font-size: 1.05rem; }
.note { color: var(--muted); font-size: .95rem; }
.figure { margin: 16px 0; }
.figure img { display: block; width: 100%; height: auto; border-radius: 8px; }
figcaption { color: var(--muted); font-size: .85rem; margin-top: 6px; }
.scroll { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; min-width: 360px; margin: 8px 0; }
th, td { border-bottom: 1px solid var(--line); padding: 8px 10px; text-align: left; }
thead th { color: var(--muted); font-weight: 500; font-size: .9rem; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.foot {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .85rem;
  text-align: center;
  padding: 20px 16px 32px;
}
.foot p { margin: 4px 0; }
.status { margin: 0 0 4px; }
.badge {
  display: inline-block;
  border: 1px solid var(--amber);
  color: var(--amber);
  border-radius: 999px;
  font-size: .85rem;
  padding: 2px 12px;
  letter-spacing: .05em;
}
.plan { list-style: none; margin: 12px 0; padding: 0; border-left: 2px solid var(--red); }
.plan li { position: relative; padding: 0 0 14px 18px; }
.plan li::before {
  content: "";
  position: absolute;
  left: -7px;
  top: .55em;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--red);
}
.plan .when { display: block; color: var(--amber); font-weight: 700; }
.plan .what { display: block; }
.cards { display: grid; gap: 12px; grid-template-columns: 1fr; margin: 12px 0; }
.card {
  background: var(--bg2);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 16px;
}
.card h3 { font-size: 1.05rem; margin: 0 0 6px; color: var(--text); }
.card h3::before { content: ""; display: inline-block; width: 8px; height: 8px; margin-right: 8px; border-radius: 50%; background: var(--red); vertical-align: middle; }
.card p { margin: 0; color: var(--muted); }
.for { margin: 8px 0; padding-left: 1.2em; }
.for li { margin: 4px 0; }
@media (min-width: 640px) {
  .cards { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  h1 { font-size: 1.4rem; }
}