/* =========================================
   観 KAN — Responsive (mobile first 補正)
   ========================================= */

/* === Tablet === */
@media (max-width: 1023px) {
  .container { padding: 0 28px; }
  .section-head { margin-bottom: 48px; }

  /* Header nav (tablet) */
  .header__nav-link { font-size: 12px; letter-spacing: 0.05em; }
  .header__nav { gap: 22px; }
  .header__nav-cta .btn--sm { padding: 8px 14px; }

  /* Hero */
  .hero__inner { grid-template-columns: 1fr; gap: 48px; }
  .hero__visual { max-width: 420px; margin: 0 auto; }

  /* Categories */
  .cat-grid { grid-template-columns: repeat(3, 1fr); }

  /* Reasons */
  .reasons__list { grid-template-columns: repeat(2, 1fr); }

  /* Results */
  .result-grid { grid-template-columns: repeat(2, 1fr); }

  /* Column */
  .column__list { grid-template-columns: repeat(2, 1fr); }

  /* Access */
  .access__inner { grid-template-columns: 1fr; }
  .access__map { min-height: 360px; }
  .access__info { padding: 40px 32px; }

  /* Footer */
  .footer__top { grid-template-columns: 1fr; }
  .footer__nav { grid-template-columns: repeat(4, 1fr); gap: 20px; }
}

/* === Mobile === */
@media (max-width: 768px) {
  body { font-size: 15px; }
  .container { padding: 0 20px; }
  .section-head { margin-bottom: 40px; }
  .section-head__ja { font-size: clamp(24px, 6.5vw, 32px); }

  /* Header */
  .header__inner { height: 64px; }
  .header__logo-mark { font-size: 24px; }
  .header__logo-text { font-size: 15px; letter-spacing: 0.25em; }

  .header__nav {
    position: fixed;
    top: 0;
    right: 0;
    left: auto;
    width: 280px;
    max-width: 100vw;
    height: 100vh;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 24px;
    padding: 80px 36px;
    background-color: var(--c-base);
    transform: translateX(100%);
    transition: transform 0.35s ease;
    box-shadow: -4px 0 24px rgba(45, 38, 32, 0.1);
    z-index: 100;
  }
  .header__nav.is-open { transform: translateX(0); }
  .header__nav-link {
    font-family: var(--f-jpserif);
    font-size: 16px;
    letter-spacing: 0.08em;
    color: var(--c-text);
    width: 100%;
  }
  .header__nav-link::after { display: none; }
  .header__nav-cta {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    margin-left: 0;
    margin-top: 12px;
    gap: 10px;
  }
  .header__nav-cta .btn { width: 100%; }

  .header__burger { display: flex; color: var(--c-text); }
  .header__overlay {
    display: block;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-color: rgba(45, 38, 32, 0.4);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    z-index: 99;
  }
  .header__overlay.is-visible { opacity: 1; visibility: visible; }

  /* Hero */
  .hero { padding: 110px 0 100px; min-height: auto; }
  .hero__copy { max-width: 100%; }
  .hero__title { font-size: clamp(32px, 9vw, 44px); margin-bottom: 24px; }
  .hero__lead { font-size: 14px; line-height: 2.0; margin-bottom: 28px; }
  .hero__cta { width: 100%; }
  .hero__cta .btn { flex: 1 1 auto; }
  .hero__ticker {
    width: 100%;
    padding: 12px 16px;
    font-size: 11.5px;
    gap: 10px;
  }
  .hero__ticker-item strong { font-size: 15px; }
  .hero__ticker-divider { display: none; }
  .hero__visual { max-width: 320px; }
  .hero__visual-tag {
    width: 110px; height: 110px;
    bottom: -16px; right: -16px;
  }
  .hero__visual-tag strong { font-size: 26px; }
  .hero__scroll { display: none; }

  /* Live rates */
  .live-rates { padding: 80px 0; }
  .rates { grid-template-columns: 1fr; gap: 20px; }
  .rate-card { padding: 30px 24px; }
  .rate-card__num { font-size: 44px; }

  /* Brand */
  .brand { padding: 90px 0; }
  .brand__inner { grid-template-columns: 1fr; gap: 48px; }
  .brand__compare { padding: 28px 16px; }
  .brand__compare-col { padding: 0 12px; }
  .brand__compare-kanji { font-size: 48px; }

  /* Categories */
  .categories { padding: 90px 0; }
  .cat-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .cat-card__body { padding: 18px 16px 22px; }
  .cat-card__title { font-size: 16px; }
  .cat-card__desc { font-size: 12px; }

  /* Reasons */
  .reasons { padding: 90px 0; }
  .reasons__list { grid-template-columns: 1fr; gap: 20px; }
  .reason-card { padding: 36px 24px 28px; }

  /* Results */
  .results { padding: 90px 0; }
  .result-grid { grid-template-columns: 1fr; gap: 24px; }
  .result-card__title { min-height: auto; }

  /* FAQ */
  .faq { padding: 90px 0; }
  .faq__q { padding: 22px 4px; gap: 14px; grid-template-columns: auto 1fr auto; }
  .faq__q-mark { font-size: 18px; }
  .faq__q-text { font-size: 14.5px; line-height: 1.6; }
  .faq__a > p { padding-left: 30px; font-size: 13px; }

  /* Column */
  .column { padding: 90px 0; }
  .column__list { grid-template-columns: 1fr; gap: 24px; }
  .column-card__title { min-height: auto; }

  /* Access */
  .access { padding: 90px 0; }
  .access__map { min-height: 280px; }
  .access__info { padding: 32px 24px; }
  .access__list { grid-template-columns: 1fr; row-gap: 14px; }
  .access__list dt { padding-top: 0; }
  .access__list dd { margin-bottom: 4px; }

  /* CTA banner */
  .cta-banner { padding: 80px 0; }
  .cta-banner__buttons { gap: 14px; flex-direction: column; align-items: stretch; }
  .btn--lg { min-width: auto; width: 100%; }

  /* Footer */
  .footer { padding: 60px 0 32px; }
  .footer__top { padding-bottom: 40px; gap: 40px; }
  .footer__nav { grid-template-columns: repeat(2, 1fr); gap: 28px 16px; }
  .footer__bottom { flex-direction: column; }
  .footer__sample-note { text-align: left; }
}

/* === Small mobile === */
@media (max-width: 380px) {
  .container { padding: 0 16px; }
  .hero__title { font-size: 30px; }
  .rate-card__num { font-size: 38px; }
}