:root {
  --okg-bg: #f6f8fb;
  --okg-ink: #10243b;
  --okg-blue: #1f4b7a;
  --okg-border: #d8e2ee;
}

body {
  margin: 0;
  font-size: var(--fs-base);
  line-height: var(--lh-normal);
  color: var(--okg-ink);
  background: var(--okg-bg);
}

.okg-site-header {
  position: sticky;
  top: 0;
  z-index: 2000;
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid var(--okg-border);
  backdrop-filter: blur(8px);
}

.okg-site-header__inner {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 20px;
  max-width: 1320px;
  margin: 0 auto;
  padding: 12px 20px;
}

.okg-site-header__logo {
  width: 72px;
  height: auto;
  display: block;
}

.okg-site-header__menu-button {
  display: none;
}

.okg-nav__list,
.okg-mobile-nav__list,
.okg-footer-nav__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.okg-nav__list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
}

.okg-nav__list a,
.okg-mobile-nav__list a,
.okg-footer-nav__list a,
.okg-site-header__cta {
  text-decoration: none;
  color: var(--okg-ink);
}

.okg-site-header__cta {
  background: var(--okg-blue);
  color: #fff;
  padding: 10px 14px;
  border-radius: 999px;
}

.okg-mobile-nav {
  display: none;
}

.okg-site-footer {
  margin-top: 80px;
  padding: 40px 20px 20px;
  background: #0f2238;
  color: #e8eef6;
}

.okg-site-footer a {
  color: #e8eef6;
}

.okg-site-footer__inner {
  max-width: 1320px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.okg-footer-nav__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.okg-site-footer__bottom {
  max-width: 1320px;
  margin: 24px auto 0;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: 14px;
}

@media (max-width: 960px) {
  .okg-site-header__inner {
    grid-template-columns: auto auto auto;
  }

  .okg-site-header__nav,
  .okg-site-header__cta {
    display: none;
  }

  .okg-site-header__menu-button {
    display: inline-flex;
    flex-direction: column;
    gap: 4px;
    background: transparent;
    border: 0;
    padding: 6px;
    margin-left: auto;
    cursor: pointer;
  }

  .okg-site-header__menu-button span {
    width: 22px;
    height: 2px;
    background: var(--okg-ink);
    display: block;
  }

  .okg-mobile-nav {
    display: block;
    padding: 0 20px 16px;
    background: #fff;
    border-bottom: 1px solid var(--okg-border);
  }

  .okg-mobile-nav__list {
    display: grid;
    gap: 10px;
  }

  .okg-site-footer__inner {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   Global Typography Enforcement
   typography.css の変数を全ページで確実に適用するベースルール
   ============================================================ */

/* html font-size を固定（62.5%ハック無効化） */
html {
  font-size: 16px;
}

/* ── ベースフォントを全ページで統一 ── */
body {
  font-family: var(--font-ja, "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif);
  font-size: var(--fs-base, 16px);
  line-height: var(--lh-normal, 1.7);
}

/* ── フォントユーティリティクラス ── */
.f_en,
.f_oswald {
  font-family: var(--font-en, "Oswald", sans-serif);
}

.f_serif {
  font-family: var(--font-ja-serif, "Noto Serif JP", "Yu Mincho", serif);
}

.f_mono {
  font-family: var(--font-mono, "Courier New", monospace);
}