/* design: sumi 墨 / 和モダン ─ 白地×黒透過ヘッダー×臙脂×金茶。上質・落ち着き（デフォルト） */
:root {
  --theme-bg: #fbfaf7;
  --theme-surface: #f2eee6;
  --theme-ink: #1e1b18;
  --theme-ink-weak: #655f57;
  --theme-line: #e4ddd1;
  --theme-accent: #7a1f1f;
  --theme-accent-ink: #ffffff;
  --theme-accent-2: #a98d5a;
  --theme-header-bg: rgba(18, 15, 13, 0.5);
  --theme-header-ink: #ffffff;
  --theme-footer-bg: #211c18;
  --theme-footer-ink: #ece5da;

  --font-head: "Georgia", "Times New Roman", serif;
  --font-head-ja: "Yu Mincho", "游明朝", "Hiragino Mincho ProN", serif;
  --font-body: "Yu Gothic", "游ゴシック", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
}
body { font-weight: 400; }
.brand-name { font-weight: 600; }
.sec-head-en { font-style: italic; }
.sec-head-ja::before { content: "─ "; color: var(--theme-accent-2); }
.hero-catch { font-weight: 600; }
/* 金茶の細い区切り */
.sec:not(.hero):not(.is-dark)::before {
  content: ""; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: 34px; height: 2px; background: var(--theme-accent-2); opacity: 0.6;
}
.sec.hero::before, .sec-intro::before { display: none; }
.menu-group h3 { border-color: var(--theme-accent-2); }
.feature-card .num { font-style: italic; }