/* ─── Page header (Case list) ─── */
.page-header {
  max-width: 1280px;
  margin: 0 auto;
  padding: 120px 40px 80px;
}
.page-header__label {
  font-family: var(--serif-en);
  font-size: 12px;
  font-style: italic;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--sub);
  margin-bottom: 28px;
}
.page-header__title {
  font-family: var(--serif-jp);
  font-size: 56px;
  font-weight: 500;
  letter-spacing: .04em;
  line-height: 1.2;
  margin-bottom: 16px;
}
.page-header__title .en {
  display: block;
  font-family: var(--serif-en);
  font-size: 22px;
  font-weight: 400;
  font-style: italic;
  color: var(--sub);
  letter-spacing: .04em;
  margin-top: 16px;
}
.page-header__lead {
  max-width: 580px;
  font-size: 15px;
  line-height: 2.0;
  color: var(--sub);
  margin-top: 32px;
}
.page-header__disclaimer {
  max-width: 580px;
  font-size: 11px;
  line-height: 1.9;
  color: var(--sub);
  letter-spacing: .04em;
  margin-top: 28px;
  opacity: .8;
}

/* ─── Filter chips ─── */
.filter {
  max-width: 1280px;
  margin: 0 auto 72px;
  padding: 0 40px 32px;
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 56px;
  align-items: flex-start;
}
.filter__item {
  background: none;
  border: 0;
  padding: 0 0 4px;
  margin: 0;
  cursor: pointer;
  text-align: left;
  color: var(--sub);
  font: inherit;
  transition: color .25s;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
}
.filter__item::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -32px;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s ease;
}
.filter__item.is-active::after { transform: scaleX(1); }
.filter__item__en {
  font-family: var(--serif-en);
  font-size: 18px;
  font-weight: 400;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--sub);
  line-height: 1;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  transition: color .25s;
}
.filter__item__jp {
  font-family: var(--serif-jp);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: .15em;
  color: var(--sub);
  line-height: 1;
  transition: color .25s;
}
.filter__item:hover .filter__item__en { color: var(--ink); opacity: 1; }
.filter__item.is-active .filter__item__en { color: var(--ink); }
.filter__item.is-active .filter__item__jp { color: var(--ink); }
.filter__item__count {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 11px;
  letter-spacing: .05em;
  opacity: .7;
}

/* ─── Sub-filter (Primary / Revision, 鼻のみ) ─── */
.subfilter {
  max-width: 1280px;
  margin: -36px auto 64px;
  padding: 0 40px;
  display: flex;
  align-items: baseline;
  gap: 32px;
}
.subfilter__label {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 11px;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--sub);
  white-space: nowrap;
}
.subfilter__items {
  display: flex;
  gap: 32px;
  align-items: baseline;
}
.subfilter__item {
  background: none;
  border: 0;
  padding: 0 0 4px;
  margin: 0;
  cursor: pointer;
  color: var(--sub);
  font: inherit;
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 3px;
  line-height: 1;
  transition: color .25s;
  position: relative;
}
.subfilter__item::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -8px;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s ease;
}
.subfilter__item.is-active::after { transform: scaleX(1); }
.subfilter__item.is-active { color: var(--ink); }
.subfilter__item:hover { color: var(--ink); }
.subfilter__item__en {
  font-family: var(--serif-en);
  font-size: 13px;
  letter-spacing: .22em;
  text-transform: uppercase;
}
.subfilter__item__jp {
  font-family: var(--serif-jp);
  font-size: 9px;
  letter-spacing: .12em;
  color: var(--sub);
}
.subfilter__item.is-active .subfilter__item__jp { color: var(--ink); }
.subfilter.is-hidden { display: none; }

/* ─── Cases grid ─── */
.cases {
  max-width: 1280px;
  margin: 0 auto 120px;
  padding: 0 40px;
}
.cases__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr)); /* 1fr だけだと列が中身の幅に引っ張られる */
  gap: 72px 32px;
}
.case-tile {
  /* サブグリッド: 1行目＝写真＋タイトル、2行目＝「治療内容・費用・主なリスク」。
     同じ行のタイル同士で1行目の高さが揃うので、タイトルの行数が違っても罫線が同じ高さに並ぶ。
     1つを開いても隣の罫線は動かず、写真の大きさも変わらない。 */
  display: grid;
  grid-template-rows: subgrid;
  grid-row: span 2;
  row-gap: 0;
}
.case-tile__link {
  display: block;
  cursor: pointer;
  color: inherit;
}
.case-tile__media {
  width: 100%;
  aspect-ratio: 4/5;
  overflow: hidden;
  background: linear-gradient(135deg, #ECEAE3 0%, #E2DFD8 100%);
  position: relative;
}
.case-tile__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .8s cubic-bezier(.2, .6, .2, 1);
}
.case-tile__link:hover .case-tile__media img { transform: scale(1.03); }
.case-tile__info { padding-top: 20px; }
.case-tile__meta {
  font-family: var(--serif-en);
  font-size: 11px;
  font-style: italic;
  letter-spacing: .2em;
  color: var(--sub);
  margin-bottom: 10px;
  text-transform: uppercase;
}
.case-tile__title {
  font-family: var(--serif-jp);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: .04em;
  line-height: 1.6;
  color: var(--ink);
}
.case-tile__title__en {
  display: block;
  font-family: var(--serif-en);
  font-size: 13px;
  font-style: italic;
  color: var(--sub);
  letter-spacing: .04em;
  margin-top: 4px;
  font-weight: 400;
}
.case-tile.is-hidden { display: none; }

/* Empty state */
.empty {
  text-align: center;
  padding: 80px 0;
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 14px;
  color: var(--sub);
  display: none;
}
.empty.is-visible { display: block; }

/* ─── Tablet ─── */
@media (max-width: 1024px) {
  .cases__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 56px 24px; }
  .page-header__title { font-size: 44px; }
  .page-header__title .en { font-size: 18px; }
}

/* ─── Mobile ─── */
@media (max-width: 640px) {
  .page-header { padding: 64px 24px 48px; }
  .page-header__title { font-size: 32px; }
  .page-header__title .en { font-size: 16px; }
  .page-header__lead { font-size: 14px; }
  .filter { gap: 32px; padding: 0 24px 22px; margin-bottom: 32px; }
  .filter__item__en { font-size: 14px; letter-spacing: .15em; }
  .filter__item__jp { font-size: 9px; letter-spacing: .1em; }
  .filter__item__count { font-size: 9px; }
  .filter__item::after { bottom: -22px; }
  .subfilter { padding: 0 24px; gap: 16px; flex-wrap: wrap; margin: -16px auto 40px; }
  .subfilter__label { font-size: 10px; letter-spacing: .2em; }
  .subfilter__items { gap: 22px; }
  .subfilter__item__en { font-size: 11px; letter-spacing: .18em; }
  .subfilter__item__jp { font-size: 8px; }
  .cases { padding: 0 24px 80px; }
  .cases__grid { gap: 40px 14px; }
  .case-tile__info { padding-top: 14px; }
  .case-tile__meta { font-size: 10px; margin-bottom: 6px; }
  .case-tile__title { font-size: 13px; }
  .case-tile__title__en { font-size: 11px; }
}

/* チップはカテゴリページへのリンクでもある（ボタンから a に変更）。 */
.filter__item { text-decoration: none; }

/* ─── 術式の絞り込み ───────────────────────────────
   種別（初回/修正）の .subfilter は3項目前提の2行組み・広い字送りで、
   術式のように項目数が増えると一気に重くなる。こちらは1行・和文のみ・
   小さめの明朝で、写真の邪魔をしない列にする。 */
.procfilter {
  max-width: 1280px;
  margin: -40px auto 64px;
  padding: 0 40px;
}
.procfilter__label {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 11px;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--sub);
  margin-bottom: 14px;
}
.procfilter__items {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
}
.procfilter__item {
  background: none;
  border: 0;
  margin: 0;
  padding: 0 0 3px;
  cursor: pointer;
  position: relative;
  font-family: var(--serif-jp);
  font-size: 13px;
  letter-spacing: .08em;
  line-height: 1.5;
  color: var(--sub);
  transition: color .25s;
}
.procfilter__item::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s ease;
}
.procfilter__item:hover { color: var(--ink); }
.procfilter__item.is-active { color: var(--ink); }
.procfilter__item.is-active::after { transform: scaleX(1); }
.procfilter.is-hidden { display: none; }

/* ブレークポイントはこのファイル全体と同じ 640px に合わせる
   （ここだけ別の値にすると、その幅で術式だけが縮んで不揃いになる）。
   余白も .subfilter のモバイル値（margin: -16px auto 40px）と噛み合う数字にする。 */
@media (max-width: 640px) {
  .procfilter { padding: 0 24px; margin: -24px auto 32px; }
  .procfilter__label { font-size: 10px; letter-spacing: .2em; margin-bottom: 10px; }
  .procfilter__items { gap: 10px 20px; }
  .procfilter__item { font-size: 12px; }
}