/* ==========================================================================
   御菓子処 蝶谷（ちょうや） 公式Webサイト スタイルシート (完全修正版)
   ========================================================================== */

:root {
  --bg-kinari: #FAF7F2;      /* 生成り・和紙 */
  --bg-washi: #F2ECE1;       /* あたたかみのある和紙ベージュ */
  --bg-card: #FFFFFF;        /* カード要素 */
  --bg-card-alt: #F8F4EC;
  
  --text-sumi: #231C1A;      /* 濃墨（年配のお客様にも非常に見やすい高コントラスト） */
  --text-sub: #4A3F3C;       /* 灰墨 */
  --text-muted: #685C58;
  
  --accent-wood: #7A523A;    /* メイン：銘木・小豆色 */
  --accent-wood-dark: #583926;
  --accent-gold: #B38652;    /* 金箔・黄土 */
  
  /* 蝶谷ブランドカラー：藤紫 (Wisteria Purple) */
  --accent-plum: #6B5382;    /* 品のある落ち着いた藤紫 */
  --accent-plum-dark: #4F3C63;
  --accent-plum-light: #F2EEF7;
  
  --border-color: #E2D9C8;
  --border-strong: #BD8E68;
  
  --shadow-sm: 0 2px 8px rgba(35, 28, 26, 0.05);
  --shadow-md: 0 6px 20px rgba(35, 28, 26, 0.08);
  --shadow-lg: 0 12px 32px rgba(35, 28, 26, 0.12);
  
  --font-serif: 'Zen Old Mincho', 'Shippori Mincho', 'Yu Mincho', serif;
  --font-sans: 'Noto Sans JP', 'Hiragino Sans', sans-serif;
  
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  
  --site-max-width: 1140px;
  --header-height: 76px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 17px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
  width: 100%;
}

body {
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.85;
  color: var(--text-sumi);
  background-color: var(--bg-kinari);
  /* 蝶谷オリジナル背景パターン (左右余白やセクション間で蝶・最上川・麻の葉が上品に視認可能) */
  background-image: 
    linear-gradient(rgba(250, 247, 242, 0.85), rgba(250, 247, 242, 0.85)),
    url('../assets/images/choya_bg_pattern.jpg');
  background-repeat: repeat;
  background-size: 480px auto;
  background-attachment: fixed;
  overflow-x: hidden;
  width: 100%;
  letter-spacing: 0.03em;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent-plum);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-plum-dark);
}

a:focus-visible, button:focus-visible {
  outline: 3px solid var(--accent-plum);
  outline-offset: 2px;
  border-radius: 4px;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--site-max-width);
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.section {
  padding: 72px 0;
  position: relative;
}

.section-bg-washi {
  background-color: rgba(242, 236, 225, 0.85);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(4px);
}

.section-header {
  text-align: center;
  margin-bottom: 44px;
}

.section-subtitle {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--accent-plum);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2.1rem;
  font-weight: 600;
  color: var(--text-sumi);
  letter-spacing: 0.08em;
  line-height: 1.4;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  display: block;
  width: 36px;
  height: 2px;
  background-color: var(--accent-plum);
  margin: 12px auto 0;
  border-radius: 2px;
}

.section-desc {
  margin-top: 12px;
  color: var(--text-sub);
  font-size: 0.98rem;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

/* ボタンコンポーネント */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  border-radius: 50px;
  transition: all var(--transition-normal);
  min-height: 48px;
  max-width: 100%;
  box-shadow: var(--shadow-sm);
  text-align: center;
  box-sizing: border-box;
  word-break: break-word;
}

.btn-primary {
  background-color: var(--accent-plum);
  color: #FFFFFF !important;
  border: 1px solid var(--accent-plum);
}

.btn-primary:hover {
  background-color: var(--accent-plum-dark);
  color: #FFFFFF !important;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  color: var(--accent-plum) !important;
  border: 1px solid var(--accent-plum);
}

.btn-outline:hover {
  background-color: var(--accent-plum);
  color: #FFFFFF !important;
  transform: translateY(-2px);
}

/* オンラインショップボタン：公式STORES誘導用グラデーション */
.btn-stores {
  background: linear-gradient(135deg, #5E4B75 0%, #463759 100%);
  color: #FFFFFF !important;
  border: none;
  font-weight: 700;
}

.btn-stores:hover {
  background: linear-gradient(135deg, #463759 0%, #352845 100%);
  color: #FFFFFF !important;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ヘッダー & ナビゲーション */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  background-color: rgba(250, 247, 242, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
  height: 66px;
  background-color: rgba(250, 247, 242, 0.98);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-sumi);
  min-width: 0;
}

.brand-logo-img {
  height: 38px;
  width: auto;
  object-fit: contain;
  margin-top: 5px;
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand-sub {
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: var(--accent-plum);
  font-family: var(--font-serif);
  font-weight: 600;
  white-space: nowrap;
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.15;
  white-space: nowrap;
}

.desktop-nav ul {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-sumi);
  letter-spacing: 0.06em;
  padding: 6px 0;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-plum);
  transition: width var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.mobile-menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  z-index: 1002;
  border-radius: var(--radius-sm);
  background: var(--bg-washi);
  border: 1px solid var(--border-color);
  flex-shrink: 0;
}

.mobile-menu-btn span {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--text-sumi);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* スマホドロワー（画面幅をはみ出さない厳格な構造） */
.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 100%;
  max-width: 320px;
  height: 100vh;
  background-color: var(--bg-kinari);
  z-index: 1001;
  padding: 90px 24px 40px;
  box-shadow: var(--shadow-lg);
  transform: translateX(100%);
  visibility: hidden;
  pointer-events: none;
  transition: transform var(--transition-normal), visibility var(--transition-normal);
  overflow-y: auto;
  box-sizing: border-box;
}

.mobile-nav-drawer.open {
  transform: translateX(0);
  visibility: visible;
  pointer-events: auto;
}

.mobile-nav-drawer ul {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.mobile-nav-link {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-sumi);
  padding: 10px 0;
  border-bottom: 1px dashed var(--border-color);
}

/* スマホ画面固定 オンラインショップ購入バー */
.sticky-mobile-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  z-index: 999;
  padding: 10px 16px;
  background: rgba(250, 247, 242, 0.96);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--border-color);
  box-shadow: 0 -4px 16px rgba(35, 28, 26, 0.08);
  box-sizing: border-box;
}

/* ヒーローセクション */
.hero-section-balanced {
  padding-top: calc(var(--header-height) + 32px);
  padding-bottom: 50px;
  position: relative;
}

.hero-main-grid {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 36px;
  align-items: center;
}

.hero-text-side {
  padding-right: 8px;
}

.hero-choya-tag {
  display: inline-block;
  font-family: var(--font-serif);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--accent-plum);
  background-color: var(--accent-plum-light);
  padding: 5px 16px;
  border-radius: 30px;
  border: 1px solid var(--border-color);
  margin-bottom: 18px;
}

.hero-title-main {
  font-family: var(--font-serif);
  font-size: 2.3rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-sumi);
  margin-bottom: 18px;
  letter-spacing: 0.06em;
}

.hero-lead-text {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text-sub);
  margin-bottom: 28px;
}

.hero-sweets-showcase {
  position: relative;
}

.hero-sweets-frame {
  position: relative;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 12px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

.hero-sweets-frame img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.hero-sweets-caption {
  position: absolute;
  bottom: 24px;
  left: 24px;
  right: 24px;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  padding: 8px 18px;
  border-radius: 30px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  box-sizing: border-box;
}

.hero-sweets-caption-title {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-sumi);
}

.hero-sweets-caption-sub {
  font-size: 0.75rem;
  color: var(--accent-plum);
  font-weight: 600;
}

/* 概念・こだわり */
.concept-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.concept-image-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 3px solid var(--bg-card);
}

.concept-image-frame img {
  width: 100%;
  height: 380px;
  object-fit: cover;
}

.concept-heading {
  font-family: var(--font-serif);
  font-size: 1.7rem;
  line-height: 1.45;
  color: var(--text-sumi);
  margin-bottom: 16px;
}

.concept-paragraph {
  color: var(--text-sub);
  margin-bottom: 14px;
  line-height: 1.85;
}

/* お菓子カード */
.sweets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}

@media (min-width: 993px) {
  .products-grid-8 {
    display: flex;
    flex-wrap: wrap;
    gap: 28px;
  }

  .products-grid-8 .sweet-card {
    width: calc(33.333% - 19px);
  }

  .products-grid-8 .sweet-card:nth-child(7) {
    margin-left: calc(16.666% + 4.5px);
  }
}

.sweet-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.sweet-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

.sweet-image-box {
  position: relative;
  height: 220px;
  overflow: hidden;
  background-color: var(--bg-washi);
}

.sweet-image-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform var(--transition-normal);
}

.sweet-card:hover .sweet-image-box img {
  transform: scale(1.04);
}

.sweet-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background-color: rgba(107, 83, 130, 0.92);
  color: #FFFFFF;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  backdrop-filter: blur(4px);
  z-index: 2;
}

.sweet-badge-award {
  background-color: rgba(122, 82, 58, 0.95);
}

.sweet-content {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.sweet-category {
  font-size: 0.78rem;
  color: var(--accent-gold);
  font-weight: 700;
  margin-bottom: 4px;
}

.sweet-name {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-sumi);
  margin-bottom: 8px;
}

.sweet-desc {
  font-size: 0.9rem;
  color: var(--text-sub);
  line-height: 1.75;
  margin-bottom: 16px;
  flex-grow: 1;
}

.sweet-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding-top: 14px;
  border-top: 1px dashed var(--border-color);
  margin-top: auto;
  flex-wrap: wrap;
}

.sweet-detail-btn {
  color: var(--accent-plum);
  font-weight: 700;
  font-size: 0.88rem;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 0;
}

.sweet-detail-btn:hover {
  color: var(--accent-plum-dark);
}

/* 四季とお菓子（アクセシブルタブ） */
.seasons-container {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.seasons-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.season-tab-btn {
  padding: 10px 22px;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-sub);
  border-radius: 30px;
  background-color: var(--bg-kinari);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
  min-height: 44px;
}

.season-tab-btn:hover {
  border-color: var(--accent-plum);
  color: var(--accent-plum);
}

.season-tab-btn[aria-selected="true"] {
  background-color: var(--accent-plum);
  color: #FFFFFF !important;
  border-color: var(--accent-plum);
  box-shadow: var(--shadow-sm);
}

.season-panel {
  display: none;
  grid-template-columns: 1fr 1.1fr;
  gap: 32px;
  align-items: center;
}

.season-panel:not([hidden]) {
  display: grid;
  animation: fadeIn 0.35s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.season-image-box {
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 280px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-washi);
}

.season-image-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.season-content-box {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.season-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--text-sumi);
  margin-bottom: 8px;
}

.season-quote {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--accent-plum);
  font-style: italic;
  margin-bottom: 12px;
}

.season-text {
  color: var(--text-sub);
  line-height: 1.85;
  font-size: 0.95rem;
}

/* 蝶谷の歴史タイムライン */
.history-timeline {
  position: relative;
  max-width: 820px;
  margin: 0 auto;
  padding: 16px 0;
}

.history-timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 100%;
  background-color: var(--border-strong);
}

.history-item {
  display: flex;
  justify-content: flex-end;
  padding-right: 50%;
  position: relative;
  margin-bottom: 40px;
}

.history-item:nth-child(even) {
  justify-content: flex-start;
  padding-right: 0;
  padding-left: 50%;
}

.history-marker {
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: var(--accent-plum);
  border: 3px solid var(--bg-kinari);
  box-shadow: 0 0 0 2px var(--accent-plum);
  z-index: 2;
}

.history-box {
  background: var(--bg-card);
  padding: 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  width: calc(100% - 32px);
  margin: 0 16px;
  box-sizing: border-box;
}

.history-photo-frame {
  margin-top: 14px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border-color);
  height: 180px;
}

.history-photo-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.history-year {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent-plum);
  margin-bottom: 4px;
}

.history-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-sumi);
  margin-bottom: 8px;
}

.history-desc {
  font-size: 0.92rem;
  color: var(--text-sub);
  line-height: 1.8;
}

/* 店舗案内 */
.store-section-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.store-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-washi);
}

.store-tab-btn {
  flex: 1;
  padding: 16px;
  text-align: center;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-sub);
  background: transparent;
  border-bottom: 3px solid transparent;
  transition: all var(--transition-fast);
  min-height: 48px;
}

.store-tab-btn:hover,
.store-tab-btn[aria-selected="true"] {
  color: var(--accent-plum);
  background: var(--bg-card);
  border-bottom-color: var(--accent-plum);
}

.store-content-panel {
  display: none;
  padding: 32px;
}

.store-content-panel:not([hidden]) {
  display: block;
}

.store-info-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 32px;
}

.store-detail-table {
  width: 100%;
  border-collapse: collapse;
}

.store-detail-table th,
.store-detail-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
  font-size: 0.92rem;
}

.store-detail-table th {
  width: 32%;
  color: var(--accent-plum);
  font-family: var(--font-serif);
  font-weight: 600;
  background-color: var(--bg-kinari);
}

.store-detail-table td {
  color: var(--text-sumi);
}

.payment-badge-container {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.payment-badge {
  background-color: var(--bg-kinari);
  border: 1px solid var(--border-color);
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 0.78rem;
  color: var(--text-sub);
  font-weight: 500;
}

.store-photo-frame {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  height: 260px;
}

.store-photo-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* モーダルダイアログ */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(35, 28, 26, 0.7);
  backdrop-filter: blur(6px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
  box-sizing: border-box;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.modal-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  max-height: 88vh;
  overflow-y: auto;
  position: relative;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  box-sizing: border-box;
}

.modal-close-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(250, 247, 242, 0.95);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--text-sumi);
  z-index: 10;
  cursor: pointer;
}

.modal-close-btn:hover {
  background-color: var(--accent-plum);
  color: #FFFFFF;
}

.modal-body {
  padding: 32px 24px;
}

.modal-product-title {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--text-sumi);
  margin-bottom: 6px;
}

.modal-product-sub {
  color: var(--accent-gold);
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 14px;
  display: block;
}

.modal-product-img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: 18px;
  border: 1px solid var(--border-color);
}

.modal-product-desc {
  color: var(--text-sub);
  line-height: 1.85;
  font-size: 0.95rem;
}

/* フッター */
.site-footer {
  background-color: #1F1918;
  color: rgba(255, 255, 255, 0.88);
  padding: 56px 0 28px;
  border-top: 3px solid var(--accent-plum);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 36px;
}

.footer-brand-title {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  color: #FFFFFF;
  margin-bottom: 8px;
}

.footer-brand-desc {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.8;
  margin-bottom: 14px;
}

.footer-nav-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: #FFFFFF;
  margin-bottom: 14px;
}

.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-nav-list a {
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.88rem;
}

.footer-nav-list a:hover {
  color: var(--accent-gold);
}

.footer-bottom {
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.6);
}

/* レスポンシブ最適化 (横スクロール完全防止) */
@media (max-width: 992px) {
  .hero-main-grid,
  .concept-grid,
  .season-panel,
  .store-info-grid,
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .desktop-nav {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .hero-title-main {
    font-size: 2rem;
  }

  .section {
    padding: 56px 0;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 16px;
  }
  
  body {
    padding-bottom: 68px; /* 固定ボトムバーの余白 */
  }

  .sticky-mobile-cta {
    display: block;
  }

  .container {
    padding: 0 16px;
  }

  .site-header {
    height: 64px;
  }

  .brand-logo-img {
    height: 32px;
    margin-top: 3px;
  }

  .brand-name {
    font-size: 1.15rem;
  }

  .brand-sub {
    font-size: 0.6rem;
  }

  .hero-section-balanced {
    padding-top: 86px;
    padding-bottom: 40px;
  }

  .hero-title-main {
    font-size: 1.7rem;
    line-height: 1.4;
  }

  .hero-sweets-frame img {
    height: 230px;
  }

  .sweets-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .sweet-image-box {
    height: 200px;
  }

  .seasons-container {
    padding: 20px 12px;
  }

  .seasons-tabs {
    gap: 6px;
    margin-bottom: 24px;
  }

  .season-tab-btn {
    font-size: 0.88rem;
    padding: 8px 12px;
    min-height: 42px;
    flex: 1 1 45%;
    text-align: center;
  }

  .season-image-box {
    height: 200px;
  }

  .history-timeline::before {
    left: 14px;
  }

  .history-item,
  .history-item:nth-child(even) {
    padding-left: 36px;
    padding-right: 0;
    justify-content: flex-start;
    margin-bottom: 28px;
  }

  .history-marker {
    left: 14px;
  }

  .history-box {
    width: 100%;
    margin: 0;
    padding: 16px;
  }

  .history-year {
    font-size: 1.1rem;
  }

  .history-title {
    font-size: 1rem;
  }

  .store-content-panel {
    padding: 20px 12px;
  }

  .store-detail-table th,
  .store-detail-table td {
    padding: 10px 6px;
    font-size: 0.85rem;
  }

  .store-detail-table th {
    width: 36%;
  }

  .store-photo-frame {
    height: 200px;
  }

  .modal-body {
    padding: 20px 16px;
  }

  .modal-product-img {
    height: 200px;
  }
}

/* 480px以下の超小型スマホ画面でのヘッダーボタン退避（幅溢れを完全阻止） */
@media (max-width: 480px) {
  .header-actions .btn-stores {
    display: none; /* スマホ最下部の固定購入バーへ集約 */
  }
  
  .brand-name {
    font-size: 1.1rem;
  }
  
  .brand-sub {
    display: none; /* 超小型画面ではサブテキストを隠して店名を優先 */
  }
}