/* =========================================================
   THE MOUTH — column.css
   COLUMN（コンテンツマーケティング）一覧・記事ページ用
   ========================================================= */

.column-page { background: var(--bg); }

/* 固定ヘッダー分の余白 */
.column {
  padding: clamp(120px, 14vw, 176px) clamp(24px, 6vw, 80px) clamp(80px, 9vw, 120px);
}
.column__inner { max-width: 1120px; margin: 0 auto; }

/* 見出し */
.column__head { text-align: center; margin-bottom: clamp(40px, 5vw, 64px); }
.column__eyebrow {
  font-family: var(--font-en);
  font-weight: 300;
  font-size: clamp(24px, 3.2vw, 40px);
  letter-spacing: 0.3em;
  text-indent: 0.3em;
  color: var(--navy);
}
.column__lead {
  margin-top: 16px;
  font-size: clamp(13px, 1.4vw, 15px);
  letter-spacing: 0.12em;
  color: var(--ink-light);
}

/* タグ絞り込み */
.column__tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 12px;
  margin-bottom: clamp(44px, 5.5vw, 72px);
}
.column__tag {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  font-family: var(--font-jp);
  font-size: clamp(12px, 1.25vw, 13.5px);
  letter-spacing: 0.1em;
  padding: 9px 20px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}
.column__tag:hover { border-color: var(--navy-soft); color: var(--navy); }
.column__tag.is-active {
  background: var(--navy);
  border-color: var(--navy);
  color: var(--white);
}

/* 記事グリッド */
.column__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(28px, 3.4vw, 44px) clamp(24px, 2.6vw, 36px);
}
.column__card {
  display: flex;
  flex-direction: column;
  border-bottom: 1px solid var(--line);
  padding-bottom: 24px;
  transition: opacity 0.3s ease;
}
.column__card:hover { opacity: 0.72; }
.column__thumb {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--bg-beige);
}
.column__thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.column__card:hover .column__thumb img { transform: scale(1.04); }
.column__card-body { padding-top: 18px; }
.column__card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}
.column__card-tag {
  font-family: var(--font-en);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--navy-soft);
  border: 1px solid var(--line);
  padding: 3px 10px;
  border-radius: 999px;
}
.column__card-date {
  font-family: var(--font-en);
  font-weight: 300;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--ink-light);
}
.column__card-title {
  margin-top: 8px;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.7;
  letter-spacing: 0.06em;
  color: var(--navy);
}

/* 該当なし */
.column__empty {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--ink-light);
  font-size: 14px;
  padding: 40px 0;
}

/* =========================================================
   TOPのCOLUMNセクション
   ========================================================= */
.column-sec__subtitle {
  font-size: clamp(13px, 1.4vw, 15px);
  letter-spacing: 0.22em;
  color: var(--ink-light);
  margin-top: -8px;
  margin-bottom: clamp(32px, 4vw, 48px);
}
.column-sec__more { text-align: center; margin-top: clamp(40px, 5vw, 60px); }

/* =========================================================
   記事詳細（column-article）
   ========================================================= */
.article { max-width: 760px; margin: 0 auto; }
.article__meta {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.article__date {
  font-family: var(--font-en);
  font-weight: 300;
  font-size: 12.5px;
  letter-spacing: 0.16em;
  color: var(--ink-light);
}
.article__tags { display: flex; flex-wrap: wrap; gap: 8px; }
.article__tag {
  font-family: var(--font-en);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--navy-soft);
  border: 1px solid var(--line);
  padding: 3px 10px;
  border-radius: 999px;
}
.article__title {
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.6;
  letter-spacing: 0.06em;
  color: var(--navy);
  padding-bottom: clamp(24px, 3vw, 36px);
  border-bottom: 1px solid var(--line);
}
.article__hero {
  margin: clamp(28px, 3.4vw, 40px) 0;
  background: var(--bg-beige);
  text-align: center;
  overflow: hidden;
}
/* アイキャッチは比率を問わず全体表示（バナー等の上下切れを防止）。最大高さで収める */
.article__hero img { max-width: 100%; max-height: 520px; width: auto; height: auto; display: inline-block; vertical-align: middle; }
.article__body { font-size: clamp(15px, 1.5vw, 16px); line-height: 2.2; color: var(--ink); }
.article__body h2 {
  margin: clamp(40px, 5vw, 56px) 0 20px;
  font-size: clamp(18px, 2vw, 22px);
  letter-spacing: 0.06em;
  color: var(--navy);
  padding-left: 14px;
  border-left: 3px solid var(--navy-soft);
  line-height: 1.5;
}
.article__body h3 {
  margin: clamp(28px, 3.4vw, 36px) 0 14px;
  font-size: clamp(16px, 1.7vw, 18px);
  color: var(--navy);
}
.article__body p { margin-top: 16px; letter-spacing: 0.04em; }
.article__body p:first-child { margin-top: 0; }

.column__back {
  margin-top: clamp(48px, 6vw, 72px);
  text-align: center;
}
.column__back a {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 15px 40px;
  border: 1px solid var(--navy);
  font-family: var(--font-en);
  font-weight: 300;
  font-size: 12px;
  letter-spacing: 0.26em;
  color: var(--navy);
  transition: background 0.3s ease, color 0.3s ease;
}
.column__back a:hover { background: var(--navy); color: var(--white); }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 860px) {
  .column-page .header__nav { display: none; }
  .column { padding-top: 96px; }
  .column__grid { grid-template-columns: repeat(2, 1fr); gap: 28px 18px; }
}
@media (max-width: 560px) {
  .column__grid { grid-template-columns: 1fr; }
}

/* =========================================================
   施術の流れ / 強み（treatment下層ページ用）
   ========================================================= */
.flow {
  list-style: none;
  counter-reset: flow;
  margin: 24px 0 8px;
  padding: 0;
}
.flow__item {
  position: relative;
  padding: 0 0 28px 62px;
  counter-increment: flow;
  display: grid;
  grid-template-columns: 1fr clamp(150px, 22vw, 220px);
  column-gap: clamp(18px, 2.4vw, 32px);
  align-items: start;
}
.flow__item::before {
  content: counter(flow, decimal-leading-zero);
  position: absolute;
  left: 0; top: 0;
  width: 42px; height: 42px;
  display: grid; place-items: center;
  font-family: var(--font-en);
  font-weight: 300;
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--navy);
  border: 1px solid var(--navy-soft);
  border-radius: 50%;
  background: var(--bg);
}
/* 縦の連結線（最後の項目以外） */
.flow__item:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 21px; top: 46px; bottom: 8px;
  width: 1px;
  background: var(--line);
}
.flow__head {
  font-family: var(--font-jp);
  font-weight: 500;
  font-size: clamp(15px, 1.6vw, 17px);
  letter-spacing: 0.04em;
  color: var(--navy);
  line-height: 1.5;
  padding-top: 9px;
}
.flow__desc {
  margin-top: 8px;
  font-size: clamp(13.5px, 1.35vw, 14.5px);
  line-height: 1.9;
  letter-spacing: 0.03em;
  color: var(--ink-light);
}
.flow__photo {
  grid-column: 2;
  grid-row: 1 / 3;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--bg-beige);
  border: 1px solid var(--line);
}
.flow__photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.flow__item--repeat .flow__head { color: var(--navy-soft); }

@media (max-width: 560px) {
  .flow__item {
    grid-template-columns: 1fr;
    padding-left: 54px;
  }
  .flow__photo {
    grid-column: 1;
    grid-row: auto;
    margin-top: 14px;
    max-width: 320px;
  }
}

/* 強み・特長リスト */
.feature-list {
  list-style: none;
  margin: 20px 0 8px;
  padding: 0;
  display: grid;
  gap: 14px;
}
.feature-list > li {
  position: relative;
  padding: 18px 20px 18px 46px;
  background: var(--bg-beige);
  border: 1px solid var(--line);
  font-size: clamp(14px, 1.4vw, 15px);
  line-height: 1.9;
  letter-spacing: 0.03em;
  color: var(--ink);
}
.feature-list > li::before {
  content: "";
  position: absolute;
  left: 20px; top: 26px;
  width: 8px; height: 8px;
  border-right: 1.5px solid var(--navy-soft);
  border-bottom: 1.5px solid var(--navy-soft);
  transform: rotate(-45deg);
}
.feature-list b { font-weight: 500; color: var(--navy); }
.feature-list a { color: var(--navy-soft); text-decoration: underline; }
.feature-list .feature-note {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  color: var(--ink-light);
  letter-spacing: 0.02em;
}

/* おすすめ（ハイライト） */
.recommend {
  margin: 24px 0 8px;
  padding: clamp(22px, 3vw, 32px);
  border: 1px solid var(--navy-soft);
  background: var(--white);
}
.recommend__title {
  font-family: var(--font-jp);
  font-weight: 500;
  font-size: clamp(15px, 1.7vw, 18px);
  letter-spacing: 0.06em;
  color: var(--navy);
}
.recommend__title::after {
  content: "";
  display: block; width: 36px; height: 1px;
  margin-top: 14px; background: var(--navy-soft);
}
.recommend p { margin-top: 16px; }
.recommend__tags {
  list-style: none; margin: 18px 0 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 8px;
}
.recommend__tags li {
  font-size: 12.5px; letter-spacing: 0.04em;
  color: var(--navy-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 14px;
  background: var(--bg);
}

/* 料金表からの抜粋ブロック */
.price-pull {
  margin: 20px 0 8px;
  border: 1px solid var(--line);
  background: var(--white);
}
.price-pull__row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 16px;
  flex-wrap: wrap;
  padding: clamp(18px, 2.4vw, 24px);
}
.price-pull__name {
  font-family: var(--font-jp);
  font-weight: 500;
  font-size: clamp(15px, 1.6vw, 17px);
  letter-spacing: 0.04em;
  color: var(--navy);
}
.price-pull__sub {
  display: block;
  margin-top: 4px;
  font-family: var(--font-en);
  font-weight: 300;
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--navy-soft);
}
.price-pull__amount {
  font-family: var(--font-jp);
  font-weight: 500;
  font-size: clamp(20px, 2.6vw, 26px);
  letter-spacing: 0.02em;
  color: var(--navy);
  white-space: nowrap;
}
.price-pull__amount small { font-size: 12px; color: var(--ink-light); margin-left: 4px; }
.price-pull__note {
  margin: 0;
  padding: 12px clamp(18px, 2.4vw, 24px);
  border-top: 1px solid var(--line);
  background: var(--bg-beige);
  font-size: 12.5px;
  line-height: 1.8;
  letter-spacing: 0.02em;
  color: var(--ink-light);
}
.price-pull__note a { color: var(--navy-soft); text-decoration: underline; }

/* 料金表への回遊ボタン */
.price-more {
  margin: 20px 0 8px;
  text-align: center;
}
.price-more__btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 15px 40px;
  background: var(--navy);
  color: var(--white);
  font-family: var(--font-en);
  font-weight: 300;
  font-size: 12px;
  letter-spacing: 0.22em;
  transition: opacity 0.3s ease;
}
.price-more__btn:hover { opacity: 0.82; }
.price-more__btn .price-more__jp {
  font-family: var(--font-jp);
  letter-spacing: 0.08em;
  font-size: 13px;
}
.price-more__btn .arrow { font-weight: 200; font-size: 15px; }

/* 治療下層の関連症例 */
.related-cases__note {
  margin: 4px 0 20px !important;
  font-size: clamp(13px, 1.35vw, 14.5px);
  color: var(--ink-light);
  letter-spacing: 0.04em;
}
.related-cases { margin-top: 8px; }


/* ==========================================================
   リッチ記事（コラム詳細 single-column）用スタイル
   ※ column-article.html から統合
   ========================================================== */
    /* ===== レイアウト：本文 + 目次サイド（PC） ===== */
    .art { padding: clamp(104px, 12vw, 152px) clamp(20px, 6vw, 80px) clamp(72px, 9vw, 112px); }
    .art__inner { max-width: 1080px; margin: 0 auto; }
    .art__grid { display: grid; grid-template-columns: minmax(0, 1fr) 248px; gap: clamp(32px, 4vw, 56px); align-items: start; }
    @media (max-width: 900px){ .art__grid { grid-template-columns: 1fr; } }

    /* ===== パンくず ===== */
    .art-breadcrumb { font-family: var(--font-en); font-size: 11.5px; letter-spacing: .08em; color: var(--ink-light); margin-bottom: clamp(20px, 3vw, 30px); }
    .art-breadcrumb a { color: var(--navy-soft); text-decoration: none; }
    .art-breadcrumb a:hover { text-decoration: underline; }
    .art-breadcrumb span { color: var(--ink); }

    /* ===== 記事ヘッダー ===== */
    .art-head { max-width: 760px; }
    .art-head__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
    .art-head__tag { font-family: var(--font-en); font-size: 10.5px; letter-spacing: .06em; color: var(--navy-soft); border: 1px solid var(--line); padding: 3px 12px; border-radius: 999px; }
    .art-head__title { font-family: var(--font-jp); font-weight: 500; font-size: clamp(24px, 3.4vw, 36px); line-height: 1.55; letter-spacing: .04em; color: var(--navy); }
    .art-dates { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-top: 18px; font-family: var(--font-en); font-size: 12px; letter-spacing: .06em; color: var(--ink-light); }
    .art-dates time { color: var(--ink); }
    .art-dates .art-dates__label { margin-right: 6px; }

    /* ===== 監修者（動的予定） ===== */
    .art-supervisor { display: flex; align-items: center; gap: 16px; margin-top: 24px; padding: 16px 20px; background: var(--bg-beige); border: 1px solid var(--line); }
    .art-supervisor__photo { flex: 0 0 56px; width: 56px; height: 56px; border-radius: 50%; overflow: hidden; background: #e7e2d8; display: grid; place-items: center; }
    .art-supervisor__photo img { width: 100%; height: 100%; object-fit: cover; }
    .art-supervisor__photo span { font-family: var(--font-en); font-size: 9px; letter-spacing: .1em; color: var(--ink-light); }
    .art-supervisor__role { font-family: var(--font-en); font-size: 10px; letter-spacing: .14em; color: var(--navy-soft); }
    .art-supervisor__name { font-family: var(--font-jp); font-size: 15px; color: var(--navy); margin-top: 2px; }
    .art-supervisor__name small { font-family: var(--font-en); font-size: 11px; color: var(--ink-light); margin-left: 8px; letter-spacing: .04em; }
    .art-supervisor__profile { font-size: 12px; line-height: 1.7; color: var(--ink-light); margin-top: 4px; }

    /* ===== ヒーロー ===== */
    .art-hero { margin: clamp(40px, 5vw, 64px) 0 clamp(24px, 3vw, 40px); }
    .art-hero img { width: 100%; height: auto; display: block; aspect-ratio: 16 / 9; object-fit: cover; }
    .art-hero figcaption { margin-top: 8px; font-size: 11.5px; letter-spacing: .04em; color: var(--ink-light); }

    /* ===== 目次 ===== */
    .toc { border: 1px solid var(--line); background: var(--white); padding: 20px 22px; }
    .toc--side { position: sticky; top: 96px; }
    .toc__title { font-family: var(--font-en); font-size: 12px; letter-spacing: .2em; color: var(--navy); display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
    .toc__title::before { content: ""; width: 16px; height: 1px; background: var(--navy-soft); }
    .toc__list { list-style: none; counter-reset: toc; margin: 0; padding: 0; }
    .toc__list > li { counter-increment: toc; }
    .toc a { display: block; padding: 7px 0 7px 26px; position: relative; font-size: 12.5px; line-height: 1.6; letter-spacing: .02em; color: var(--ink); text-decoration: none; border-bottom: 1px dashed var(--line); transition: color .2s ease; }
    .toc__list > li > a::before { content: counter(toc, decimal-leading-zero); position: absolute; left: 0; top: 7px; font-family: var(--font-en); font-size: 10.5px; color: var(--navy-soft); letter-spacing: .04em; }
    .toc a:hover { color: var(--navy-soft); }
    .toc__sub { list-style: none; margin: 0; padding: 0 0 0 26px; }
    .toc__sub a { padding-left: 16px; font-size: 12px; color: var(--ink-light); border-bottom: none; }
    .toc__sub a::before { content: "–"; position: absolute; left: 0; color: var(--line); }

    /* 本文中インライン目次（SP用に本文冒頭へ） */
    .toc--inline { margin: clamp(28px,3.5vw,38px) 0; }
    @media (min-width: 901px){ .toc--inline { display: none; } }
    @media (max-width: 900px){ .toc--side { display: none; } }

    /* ===== 本文 ===== */
    .art-body { max-width: 760px; }
    .art-lead { font-size: clamp(15px, 1.7vw, 17px); line-height: 2.05; letter-spacing: .03em; color: var(--ink); margin: clamp(26px,3vw,34px) 0 0; }
    .art-body h2 { font-family: var(--font-jp); font-weight: 500; font-size: clamp(20px, 2.4vw, 26px); line-height: 1.5; letter-spacing: .04em; color: var(--navy); margin: clamp(48px,6vw,64px) 0 20px; padding-bottom: 14px; border-bottom: 1px solid var(--line); scroll-margin-top: 90px; }
    .art-body h2 .art-body__h2en { display: block; font-family: var(--font-en); font-size: 11px; font-weight: 300; letter-spacing: .22em; color: var(--navy-soft); margin-bottom: 8px; }
    .art-body h3 { font-family: var(--font-jp); font-weight: 500; font-size: clamp(17px, 2vw, 20px); line-height: 1.6; letter-spacing: .04em; color: var(--navy); margin: clamp(36px,4.5vw,46px) 0 14px; padding-left: 14px; border-left: 3px solid var(--navy-soft); scroll-margin-top: 90px; }
    .art-body h4 { font-size: clamp(15px, 1.7vw, 16.5px); font-weight: 600; letter-spacing: .04em; color: var(--navy); margin: 30px 0 10px; }
    .art-body h5 { font-size: 14px; font-weight: 600; letter-spacing: .04em; color: var(--ink); margin: 24px 0 8px; padding-left: 14px; position: relative; }
    .art-body h5::before { content: ""; position: absolute; left: 0; top: .7em; width: 7px; height: 7px; border: 1px solid var(--navy-soft); border-radius: 50%; }
    .art-body p { font-size: clamp(14.5px, 1.5vw, 15.5px); line-height: 2.05; letter-spacing: .02em; color: var(--ink); margin: 16px 0; }
    .art-body a.inline { color: var(--navy-soft); text-decoration: underline; text-underline-offset: 3px; }
    .art-body ul, .art-body ol { margin: 16px 0; padding-left: 1.4em; }
    .art-body li { font-size: 14.5px; line-height: 1.95; letter-spacing: .02em; color: var(--ink); margin: 6px 0; }
    .art-body figure { margin: clamp(26px,3vw,34px) 0; }
    .art-body figure img { width: 100%; height: auto; display: block; border: 1px solid var(--line); }
    .art-body figcaption { margin-top: 8px; font-size: 11.5px; letter-spacing: .04em; color: var(--ink-light); text-align: center; }

    /* ===== チェックポイント ===== */
    .cbox { margin: clamp(26px,3vw,34px) 0; border: 1px solid var(--line); background: var(--white); }
    .cbox__head { display: flex; align-items: center; gap: 10px; padding: 13px 20px; background: var(--navy); color: #fff; font-family: var(--font-en); font-size: 12px; letter-spacing: .18em; }
    .cbox__head svg { width: 16px; height: 16px; flex: 0 0 16px; }
    .cbox__head .cbox__head-jp { font-family: var(--font-jp); font-size: 13px; letter-spacing: .08em; }
    .cbox__list { list-style: none; margin: 0; padding: 16px 20px; }
    .cbox__list li { position: relative; padding: 8px 0 8px 30px; font-size: 14px; line-height: 1.8; letter-spacing: .02em; color: var(--ink); border-bottom: 1px dashed var(--line); }
    .cbox__list li:last-child { border-bottom: none; }
    .cbox__list li::before { content: ""; position: absolute; left: 2px; top: 13px; width: 16px; height: 9px; border-left: 2px solid var(--navy-soft); border-bottom: 2px solid var(--navy-soft); transform: rotate(-45deg); }

    /* ===== 引用・補足・注意 ボックス ===== */
    .callout { margin: clamp(24px,3vw,32px) 0; padding: 18px 22px; border: 1px solid var(--line); background: var(--bg-beige); position: relative; }
    .callout__label { display: inline-flex; align-items: center; gap: 7px; font-family: var(--font-en); font-size: 10.5px; letter-spacing: .14em; color: var(--navy-soft); margin-bottom: 8px; }
    .callout__label .callout__label-jp { font-family: var(--font-jp); font-size: 12.5px; letter-spacing: .06em; color: var(--navy); }
    .callout p { margin: 4px 0; font-size: 14px; line-height: 1.9; color: var(--ink); }
    .callout--point { background: #f3f6f8; border-color: #cdd9e0; }
    .callout--point .callout__label-jp { color: var(--navy); }
    .callout--note { border-left: 3px solid var(--navy-soft); }
    .callout--quote { background: var(--white); border-left: 3px solid var(--line); font-family: var(--font-jp); }
    .callout--quote p { font-style: normal; color: var(--ink-light); }

    /* ===== CTA ===== */
    .cta-block { margin: clamp(40px,5vw,56px) 0; padding: clamp(26px,3.5vw,36px); background: var(--navy); color: #fff; text-align: center; }
    .cta-block .cta-block__en { font-family: var(--font-en); font-size: 11px; letter-spacing: .28em; color: #b9c6d2; }
    .cta-block .cta-block__title { font-family: var(--font-jp); font-size: clamp(17px,2vw,20px); letter-spacing: .06em; margin: 10px 0 6px; color: #fff; }
    .cta-block .cta-block__text { font-size: 13px; line-height: 1.9; color: #e3e9ef; letter-spacing: .03em; }
    .cta-block__btns { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 20px; }
    .cta-block__btn { display: inline-flex; align-items: center; gap: 10px; min-width: 220px; justify-content: center; padding: 14px 28px; font-size: 13.5px; letter-spacing: .08em; text-decoration: none; transition: opacity .25s ease, background .25s ease, color .25s ease; }
    .cta-block__btn--reserve { background: #fff; color: var(--navy); }
    .cta-block__btn--line { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.6); }
    .cta-block__btn:hover { opacity: .88; }

    /* ===== FAQ ===== */
    .faq { margin: clamp(28px,3.5vw,40px) 0; }
    .faq__item { border: 1px solid var(--line); background: var(--white); margin-bottom: 10px; }
    .faq__item summary { list-style: none; cursor: pointer; display: flex; gap: 12px; align-items: flex-start; padding: 16px 20px; font-family: var(--font-jp); font-size: 14.5px; line-height: 1.6; letter-spacing: .03em; color: var(--navy); }
    .faq__item summary::-webkit-details-marker { display: none; }
    .faq__item summary::before { content: "Q"; font-family: var(--font-en); font-size: 13px; color: var(--navy-soft); flex: 0 0 auto; line-height: 1.5; }
    .faq__item summary::after { content: "＋"; margin-left: auto; font-family: var(--font-en); color: var(--navy-soft); transition: transform .25s ease; }
    .faq__item[open] summary::after { content: "－"; }
    .faq__body { display: flex; gap: 12px; padding: 0 20px 18px; }
    .faq__body::before { content: "A"; font-family: var(--font-en); font-size: 13px; color: var(--ink-light); flex: 0 0 auto; }
    .faq__body p { font-size: 13.5px; line-height: 1.9; color: var(--ink); margin: 0; letter-spacing: .02em; }

    /* ===== 参考・免責 ===== */
    .art-refs { margin-top: clamp(32px,4vw,44px); padding-top: 20px; border-top: 1px solid var(--line); }
    .art-refs__title { font-family: var(--font-en); font-size: 11px; letter-spacing: .18em; color: var(--ink-light); margin-bottom: 10px; }
    .art-disclaimer { margin-top: 20px; padding: 16px 18px; background: var(--bg-beige); border: 1px solid var(--line); font-size: 11.5px; line-height: 1.85; letter-spacing: .02em; color: var(--ink-light); }

    /* ===== 関連記事・関連症例 ===== */
    .related { margin-top: clamp(56px,7vw,80px); }
    .related__title { font-family: var(--font-en); font-size: clamp(18px,2.2vw,22px); letter-spacing: .22em; color: var(--navy); text-align: center; }
    .related__title-jp { display: block; font-family: var(--font-jp); font-size: 12px; letter-spacing: .12em; color: var(--ink-light); margin-top: 8px; }
    .related__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: clamp(24px,3vw,32px); }
    @media (max-width: 760px){ .related__grid { grid-template-columns: 1fr; } }
    .rcard { border: 1px solid var(--line); background: var(--white); text-decoration: none; color: inherit; display: flex; flex-direction: column; transition: opacity .25s ease; }
    .rcard:hover { opacity: .92; }
    .rcard__thumb { aspect-ratio: 16/10; overflow: hidden; background: var(--bg-beige); }
    .rcard__thumb img { width: 100%; height: 100%; object-fit: cover; }
    .rcard__body { padding: 14px 16px 16px; }
    .rcard__tag { font-family: var(--font-en); font-size: 10px; letter-spacing: .06em; color: var(--navy-soft); border: 1px solid var(--line); padding: 2px 9px; border-radius: 999px; }
    .rcard__title { font-family: var(--font-jp); font-size: 14px; line-height: 1.6; letter-spacing: .03em; color: var(--navy); margin-top: 10px; }
    .related__more { text-align: center; margin-top: clamp(28px,3.5vw,40px); }