:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #1f2430;
  --muted: #6b7280;
  --line: #e3e6eb;
  --accent: #c2185b;
  --accent-dark: #9c1248;
  --head: #1f2430;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", Meiryo, sans-serif;
  line-height: 1.8;
}

a { color: var(--accent); }

.site-header {
  background: var(--head);
  color: #fff;
}
.site-header .inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 14px 16px;
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}
.site-header .logo {
  color: #fff;
  text-decoration: none;
  font-size: 1.35rem;
  font-weight: 700;
}
.site-header .tagline {
  color: #c9ced8;
  font-size: 0.85rem;
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

h1 { font-size: 1.6rem; line-height: 1.4; margin: 0 0 12px; }
h2 {
  font-size: 1.2rem;
  margin: 32px 0 12px;
  padding-left: 10px;
  border-left: 4px solid var(--accent);
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 16px;
}
.features .card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.features .card p { margin: 0; color: var(--muted); font-size: 0.92rem; }

.notice {
  background: #fff8e1;
  border: 1px solid #f3dd9b;
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 0.92rem;
}

table.info { width: 100%; border-collapse: collapse; background: var(--card); }
table.info th, table.info td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}
table.info th { width: 30%; background: #f0f2f5; font-weight: 600; }

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--card);
  font-size: 0.85rem;
  color: var(--muted);
}
.site-footer .inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 20px 16px;
}
.site-footer nav a { margin-right: 16px; color: var(--muted); }
.site-footer .credit { margin-top: 8px; }

/* 年齢確認 */
.age-gate {
  position: fixed;
  inset: 0;
  background: rgba(20, 22, 28, 0.96);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 1000;
}
.age-gate[hidden] { display: none; }
.age-gate .box {
  background: #fff;
  border-radius: 10px;
  max-width: 440px;
  width: 100%;
  padding: 28px 24px;
  text-align: center;
}
.age-gate h2 { border: 0; padding: 0; margin: 0 0 12px; font-size: 1.25rem; }
.age-gate p { margin: 0 0 20px; font-size: 0.92rem; color: var(--muted); }
.age-gate .buttons { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.age-gate button, .age-gate a.no {
  display: inline-block;
  min-width: 150px;
  padding: 12px 16px;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}
.age-gate button { background: var(--accent); color: #fff; border: 0; }
.age-gate button:hover { background: var(--accent-dark); }
.age-gate a.no { background: #eceef2; color: var(--text); }