/* ============================================================
   Lien Dental Clinic — menu.css
   診療メニュー4ページ共通スタイル
   (aesthetic / whitening / orthodontics / general)
   ※ 先に common.css を読み込むこと
   ------------------------------------------------------------
   目次:
     01. Menu Hero (フルワイド画像 + タイトル)
     02. Page Intro (導入)
     03. Treatment Section (治療内容カード)
     04. Comparison Section (3コース比較表)
     05. Price Preview Section (料金プレビュー)
     06. Menu Cases Section (症例)
     07. FAQ Section (アコーディオン)
     08. Page CTA (ページ末尾CTA)
   ============================================================ */


/* ============================================================
   01. Menu Hero
   ※ HTML側で --hero-bg を style属性で指定:
      <section class="menu-hero" style="--hero-bg: url('...')">
   ============================================================ */
.menu-hero {
  position: relative;
  padding: clamp(120px, 18vw, 200px) 0 clamp(80px, 12vw, 140px);
  color: #fff;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(184, 212, 227, 0.45) 0%, rgba(44, 62, 80, 0.65) 100%),
    var(--hero-bg, linear-gradient(135deg, #B8D4E3, #4A6E87)) center/cover;
}
.menu-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(0, 0, 0, 0.15) 100%);
  pointer-events: none;
}

.menu-hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.menu-hero-eyebrow {
  font-family: var(--font-serif-en);
  font-size: 12px;
  letter-spacing: 0.36em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 28px;
  display: inline-flex;
  align-items: center;
  gap: 16px;
  font-weight: 500;
}
.menu-hero-eyebrow::before {
  content: "";
  width: 48px;
  height: 1px;
  background: rgba(255, 255, 255, 0.7);
}

.menu-hero-title {
  font-family: var(--font-serif-jp);
  font-weight: 500;
  font-size: clamp(28px, 4.6vw, 52px);
  line-height: 1.55;
  letter-spacing: 0.06em;
  color: #fff;
  text-shadow: 0 2px 20px rgba(44, 62, 80, 0.25);
}
.menu-hero-title .small-en {
  display: block;
  font-family: var(--font-serif-en);
  font-size: clamp(14px, 1.8vw, 18px);
  letter-spacing: 0.22em;
  font-style: italic;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.85);
  margin-top: 20px;
}

.menu-hero-sub {
  margin-top: 28px;
  font-size: 14.5px;
  color: rgba(255, 255, 255, 0.92);
  line-height: 2.1;
  max-width: 540px;
  text-shadow: 0 2px 12px rgba(44, 62, 80, 0.18);
}


/* ============================================================
   02. Page Intro
   ============================================================ */
.page-intro {
  padding: var(--space-section) 0;
  background: var(--color-bg-primary);
}

.page-intro-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}
@media (min-width: 900px) {
  .page-intro-grid {
    grid-template-columns: 1fr 1.2fr;
    gap: 72px;
  }
}

.page-intro-heading .section-title {
  margin-top: 18px;
}

.page-intro-body {
  font-size: 14.5px;
  color: var(--color-text-secondary);
  line-height: 2.15;
}
.page-intro-body p + p {
  margin-top: 1.6em;
}


/* ============================================================
   03. Treatment Section (治療内容カード)
   ============================================================ */
.treatment-section {
  padding: var(--space-section) 0;
  background: var(--color-bg-secondary);
  position: relative;
  overflow: hidden;
}

.treatment-head {
  margin-bottom: 64px;
  max-width: 760px;
}

.treatment-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

.treatment-card {
  background: #fff;
  display: grid;
  grid-template-columns: 1fr;
  overflow: hidden;
  border: 1px solid var(--color-line-soft);
  transition: box-shadow .4s ease;
}
.treatment-card:hover {
  box-shadow: 0 24px 50px rgba(44, 62, 80, 0.08);
}
@media (min-width: 800px) {
  .treatment-card {
    grid-template-columns: 1fr 1.2fr;
  }
  .treatment-card.is-reverse {
    grid-template-columns: 1.2fr 1fr;
  }
  .treatment-card.is-reverse .treatment-card-img {
    order: 2;
  }
}

.treatment-card-img {
  background-size: cover;
  background-position: center;
  min-height: 320px;
  position: relative;
}
.treatment-card-img::before {
  content: attr(data-label);
  position: absolute;
  top: 20px;
  left: 20px;
  font-family: var(--font-serif-en);
  font-size: 10px;
  letter-spacing: 0.28em;
  color: #fff;
  background: rgba(44, 62, 80, 0.55);
  padding: 6px 12px;
  font-weight: 500;
  backdrop-filter: blur(8px);
}

.treatment-card-body {
  padding: clamp(28px, 4vw, 48px);
  display: flex;
  flex-direction: column;
}

.treatment-card-num {
  font-family: var(--font-serif-en);
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--color-text-muted);
  font-weight: 500;
  margin-bottom: 18px;
}

.treatment-card-name {
  font-family: var(--font-serif-jp);
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 500;
  letter-spacing: 0.06em;
  line-height: 1.45;
  color: var(--color-text-primary);
  margin-bottom: 6px;
}

.treatment-card-name-en {
  font-family: var(--font-serif-en);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--color-primary-main);
  font-style: italic;
  display: block;
  margin-bottom: 20px;
  font-weight: 400;
}

.treatment-card-desc {
  font-size: 13.5px;
  color: var(--color-text-secondary);
  line-height: 2;
  margin-bottom: 24px;
}

/* Meta table (期間 / 費用) */
.treatment-meta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-bottom: 24px;
  font-size: 12.5px;
}
@media (min-width: 500px) {
  .treatment-meta {
    grid-template-columns: repeat(2, 1fr);
  }
}
.treatment-meta-item {
  padding: 12px 0;
  border-top: 1px solid var(--color-line-soft);
}
.treatment-meta-item:last-child {
  border-bottom: 1px solid var(--color-line-soft);
}
@media (min-width: 500px) {
  .treatment-meta-item:nth-child(2) {
    border-left: 1px solid var(--color-line-soft);
    padding-left: 16px;
  }
  .treatment-meta-item:nth-last-child(-n+2) {
    border-bottom: 1px solid var(--color-line-soft);
  }
}
.treatment-meta-label {
  font-family: var(--font-serif-en);
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--color-text-muted);
  font-weight: 500;
  margin-bottom: 4px;
  display: block;
}
.treatment-meta-value {
  color: var(--color-text-primary);
  font-weight: 500;
  font-size: 14px;
}
.treatment-meta-value .price-num {
  font-family: var(--font-serif-en);
  font-size: 22px;
  letter-spacing: 0.02em;
}
.treatment-meta-value .price-unit {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-left: 4px;
}

/* Merit / Demerit */
.treatment-md {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 24px;
}
@media (min-width: 600px) {
  .treatment-md {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
}
.treatment-md-block {
  padding: 16px 18px;
  background: var(--color-bg-secondary);
}
.treatment-md-block.is-merit {
  background: #F0F5F8;
}
.treatment-md-label {
  font-family: var(--font-serif-en);
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--color-primary-main);
  font-weight: 500;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.treatment-md-block.is-demerit .treatment-md-label {
  color: var(--color-accent-deep);
}
.treatment-md-label::before {
  content: "";
  width: 6px;
  height: 6px;
  background: currentColor;
  border-radius: 50%;
}
.treatment-md-list {
  font-size: 12.5px;
  color: var(--color-text-secondary);
  line-height: 1.9;
}
.treatment-md-list li {
  padding-left: 14px;
  position: relative;
  margin-bottom: 4px;
}
.treatment-md-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 6px;
  height: 1px;
  background: var(--color-text-muted);
}

/* Risk box */
.treatment-risk {
  padding: 14px 18px;
  background: rgba(245, 212, 202, 0.25);
  border-left: 2px solid var(--color-accent-deep);
  font-size: 12px;
  color: var(--color-text-secondary);
  line-height: 1.85;
  margin-top: auto;
}
.treatment-risk strong {
  color: var(--color-text-primary);
  font-weight: 500;
}


/* ============================================================
   04. Comparison Section (3コース比較表)
   ============================================================ */
.comparison-section {
  padding: var(--space-section) 0;
  background: var(--color-bg-primary);
}

.comparison-head {
  margin-bottom: 56px;
  max-width: 760px;
}

.comparison-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--color-line);
}

.comparison-table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  background: #fff;
}

.comparison-table th,
.comparison-table td {
  padding: 18px 16px;
  text-align: center;
  border-bottom: 1px solid var(--color-line-soft);
  font-size: 13px;
  vertical-align: middle;
}

.comparison-table thead th {
  background: var(--color-bg-secondary);
  font-family: var(--font-serif-jp);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--color-text-primary);
  padding: 28px 16px 24px;
  position: relative;
  border-bottom: 1px solid var(--color-line);
}
.comparison-table thead th .th-sub {
  display: block;
  font-family: var(--font-serif-en);
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--color-text-muted);
  font-style: italic;
  font-weight: 400;
  margin-top: 6px;
  text-transform: uppercase;
}

/* Featured column (例: デュアルホワイトニング) */
.comparison-table thead th.is-feature {
  background: var(--color-primary-light);
  color: var(--color-primary-deep);
}
.comparison-table thead th.is-feature::before {
  content: "Recommended";
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-serif-en);
  font-size: 9px;
  letter-spacing: 0.3em;
  color: var(--color-accent-deep);
  font-style: italic;
  font-weight: 500;
  text-transform: uppercase;
}
.comparison-table thead th.is-feature .th-sub {
  color: var(--color-primary-dark);
}

.comparison-table tbody th {
  text-align: left;
  background: var(--color-bg-secondary);
  font-family: var(--font-serif-en);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  font-weight: 500;
  padding-left: 20px;
  min-width: 120px;
}
.comparison-table tbody th .th-jp {
  display: block;
  font-family: var(--font-serif-jp);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--color-text-primary);
  font-weight: 500;
  text-transform: none;
  margin-top: 4px;
}

.comparison-table tbody td.is-feature-col {
  background: rgba(184, 212, 227, 0.12);
}

.comparison-cell-strong {
  font-weight: 500;
  color: var(--color-primary-dark);
}

.comparison-cell-price {
  font-family: var(--font-serif-en);
  font-size: 18px;
  font-weight: 500;
  color: var(--color-text-primary);
  letter-spacing: 0.02em;
}
.comparison-cell-price .unit {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-left: 2px;
  font-family: var(--font-sans-jp);
}

.comparison-rating {
  font-family: var(--font-yu);
  font-size: 24px;
  letter-spacing: 0;
  font-style: normal;
  font-weight: 700;
  line-height: 1;
}
.comparison-rating.is-great { color: var(--color-primary-dark); }
.comparison-rating.is-good { color: var(--color-primary-main); }
.comparison-rating.is-ok { color: var(--color-text-muted); }

.comparison-table tbody tr:last-child td,
.comparison-table tbody tr:last-child th {
  border-bottom: none;
}

.comparison-note {
  margin-top: 24px;
  font-size: 11.5px;
  color: var(--color-text-muted);
  line-height: 1.85;
}


/* ============================================================
   05. Price Preview Section
   ============================================================ */
.price-preview-section {
  padding: var(--space-section) 0;
  background: var(--color-bg-primary);
}

.price-preview-head {
  margin-bottom: 48px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: end;
}
@media (min-width: 900px) {
  .price-preview-head {
    grid-template-columns: 1.4fr 1fr;
  }
}

.price-preview-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--color-line);
  border: 1px solid var(--color-line);
}
@media (min-width: 700px) {
  .price-preview-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1100px) {
  .price-preview-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.price-preview-item {
  background: #fff;
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: background .25s ease;
}
.price-preview-item:hover {
  background: var(--color-bg-secondary);
}
.price-preview-name {
  font-family: var(--font-serif-jp);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-text-primary);
}
.price-preview-amount {
  font-family: var(--font-serif-en);
  font-size: 26px;
  font-weight: 500;
  color: var(--color-text-primary);
  letter-spacing: 0.02em;
  margin-top: 4px;
}
.price-preview-amount .unit {
  font-size: 12px;
  color: var(--color-text-secondary);
  letter-spacing: 0.06em;
  margin-left: 4px;
}
.price-preview-note {
  font-size: 11px;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid var(--color-line-soft);
}

.price-preview-foot {
  margin-top: 36px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 12px;
  color: var(--color-text-muted);
}


/* ============================================================
   06. Menu Cases Section (Before/After)
   ============================================================ */
.menu-cases-section {
  padding: var(--space-section) 0;
  background: var(--color-bg-secondary);
}

.menu-cases-head {
  margin-bottom: 48px;
}

.menu-cases-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
@media (min-width: 800px) {
  .menu-cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.menu-case-card {
  background: #fff;
  padding: 28px;
  border: 1px solid var(--color-line-soft);
}

.menu-case-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 24px;
  position: relative;
}
.menu-case-images::before {
  content: "→";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #fff;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary-dark);
  z-index: 2;
  font-size: 14px;
  border: 1px solid var(--color-line);
}

.menu-case-img {
  aspect-ratio: 4/3;
  background-size: cover;
  background-position: center;
  position: relative;
}
.menu-case-img.before-img {
  background: linear-gradient(135deg, #E4EAF0, #B8D4E3);
}
.menu-case-img.after-img {
  background: linear-gradient(135deg, #F5D4CA, #E8B5AC);
}
.menu-case-img::before {
  content: "BEFORE";
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(255, 255, 255, 0.95);
  padding: 4px 10px;
  font-family: var(--font-serif-en);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--color-text-primary);
  font-weight: 500;
}
.menu-case-img.after-img::before {
  content: "AFTER";
  color: var(--color-primary-dark);
}

.menu-case-tag {
  font-family: var(--font-serif-en);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--color-primary-main);
  margin-bottom: 8px;
  font-weight: 500;
}
.menu-case-title {
  font-family: var(--font-serif-jp);
  font-size: 17px;
  font-weight: 500;
  line-height: 1.6;
  margin-bottom: 18px;
}

.menu-case-detail {
  font-size: 12px;
  color: var(--color-text-secondary);
  line-height: 1.9;
  border-top: 1px solid var(--color-line-soft);
  padding-top: 16px;
  display: grid;
  gap: 6px;
}
.menu-case-detail .row {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 8px;
}
.menu-case-detail .label {
  color: var(--color-text-muted);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.menu-case-risk {
  margin-top: 14px;
  padding: 12px 14px;
  background: rgba(245, 212, 202, 0.2);
  font-size: 11.5px;
  color: var(--color-text-secondary);
  line-height: 1.75;
  border-left: 2px solid var(--color-accent-deep);
}
.menu-case-risk strong {
  color: var(--color-text-primary);
  font-weight: 500;
}

.menu-case-disclaimer {
  font-size: 10.5px;
  color: var(--color-text-muted);
  margin-top: 10px;
  letter-spacing: 0.04em;
}

.menu-cases-foot {
  margin-top: 32px;
}
.menu-cases-disclaimer {
  margin-top: 24px;
  font-size: 11.5px;
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.5);
  padding: 14px 20px;
  border-left: 2px solid var(--color-primary-light);
  line-height: 1.85;
}


/* ============================================================
   07. FAQ Section (アコーディオン / details)
   ============================================================ */
.faq-section {
  padding: var(--space-section) 0;
  background: var(--color-bg-primary);
}

.faq-head {
  margin-bottom: 48px;
}

.faq-list {
  max-width: 920px;
  margin: 0 auto;
  border-top: 1px solid var(--color-line);
}

.faq-item {
  border-bottom: 1px solid var(--color-line);
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 28px 60px 28px 8px;
  position: relative;
  font-family: var(--font-serif-jp);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.04em;
  line-height: 1.7;
  color: var(--color-text-primary);
  transition: color .3s ease;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover {
  color: var(--color-primary-dark);
}

.faq-q-label {
  font-family: var(--font-serif-en);
  font-size: 22px;
  font-style: italic;
  color: var(--color-primary-main);
  line-height: 1;
  flex-shrink: 0;
  font-weight: 500;
}

.faq-toggle {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.faq-toggle::before,
.faq-toggle::after {
  content: "";
  position: absolute;
  background: var(--color-primary-main);
  transition: transform .3s ease;
}
.faq-toggle::before {
  width: 14px;
  height: 1px;
}
.faq-toggle::after {
  width: 1px;
  height: 14px;
}
.faq-item[open] .faq-toggle::after {
  transform: scaleY(0);
}

.faq-content {
  padding: 0 8px 28px 46px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  font-size: 13.5px;
  color: var(--color-text-secondary);
  line-height: 2.05;
}
.faq-a-label {
  font-family: var(--font-serif-en);
  font-size: 22px;
  font-style: italic;
  color: var(--color-accent-deep);
  line-height: 1;
  flex-shrink: 0;
  font-weight: 500;
  margin-left: -30px;
}


/* ============================================================
   08. Page CTA (ページ末尾の予約導線)
   ============================================================ */
.page-cta {
  padding: clamp(80px, 12vw, 130px) 0;
  background:
    radial-gradient(ellipse 60% 60% at 20% 80%, rgba(184, 212, 227, 0.35), transparent 70%),
    radial-gradient(ellipse 60% 60% at 85% 20%, rgba(245, 212, 202, 0.25), transparent 70%),
    var(--color-bg-secondary);
  text-align: center;
}

.page-cta-content {
  max-width: 720px;
  margin: 0 auto;
}

.page-cta-eyebrow {
  font-family: var(--font-serif-en);
  font-size: 12px;
  letter-spacing: 0.36em;
  color: var(--color-primary-main);
  margin-bottom: 24px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-transform: uppercase;
}
.page-cta-eyebrow::before,
.page-cta-eyebrow::after {
  content: "";
  width: 40px;
  height: 1px;
  background: var(--color-primary-main);
}

.page-cta-title {
  font-family: var(--font-serif-jp);
  font-size: clamp(24px, 3.4vw, 36px);
  line-height: 1.65;
  font-weight: 500;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
  color: var(--color-text-primary);
}
.page-cta-title .accent {
  color: var(--color-primary-dark);
  position: relative;
  display: inline-block;
}
.page-cta-title .accent::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--color-accent-soft);
}

.page-cta-lead {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 2.1;
  margin-bottom: 40px;
}

.page-cta-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  margin-bottom: 32px;
}

.page-cta-phone {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 18px 32px;
  background: #fff;
  border: 1px solid var(--color-line);
}
.page-cta-phone .label {
  font-family: var(--font-serif-en);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--color-text-muted);
  font-weight: 500;
  text-transform: uppercase;
}
.page-cta-phone .num {
  font-family: var(--font-serif-en);
  font-size: 28px;
  letter-spacing: 0.04em;
  color: var(--color-text-primary);
  font-weight: 500;
}
.page-cta-phone .hours {
  font-size: 11px;
  color: var(--color-text-secondary);
  letter-spacing: 0.04em;
}