/* ========================================
   サイトマップ（/sitemap/）
   フッターのナビ（.footer-nav）と同じ分け方で、サイト内の全ページを一覧にする。
   PC 3列 / タブレット 2列 / SP 1列。個別ページは親の下に字下げ。
======================================== */

.sm-page {
  padding-block: clamp(40px, 5vw, 64px) clamp(64px, 8vw, 80px);
  background: #fff;
  color: var(--color-ink);
}

/* ---- 見出し ---- */
.sm-head {
  margin: 0 0 clamp(36px, 4.5vw, 56px);
}
.sm-title {
  margin: 0 0 12px;
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.5;
  letter-spacing: .04em;
}
.sm-lead {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.9;
  color: var(--color-ink-soft);
}
.sm-lead a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---- グループの格子 ---- */
.sm-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(32px, 4vw, 48px) clamp(24px, 4vw, 56px);
}
.sm-group {
  min-width: 0;
}
.sm-group__title {
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-ink);
  font-size: 17px;
  font-weight: 800;
  line-height: 1.5;
  letter-spacing: .04em;
}
.sm-group__title a {
  color: inherit;
  text-decoration: none;
}
.sm-group__title a:hover {
  color: var(--color-primary);
  opacity: 1;
}

/* ---- 項目 ---- */
.sm-list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.sm-list > li {
  margin: 0 0 6px;
  font-size: 15px;
  line-height: 1.8;
}
.sm-list > li > a,
.sm-list__label {
  position: relative;
  display: inline-block;
  padding-left: 16px;
  color: var(--color-ink);
  text-decoration: none;
}
.sm-list > li > a::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .72em;
  width: 6px;
  height: 6px;
  border-top: 1.5px solid var(--color-primary);
  border-right: 1.5px solid var(--color-primary);
  transform: rotate(45deg);
}
.sm-list > li > a:hover {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  opacity: 1;
}
.sm-list > li > a[aria-current="page"] {
  color: var(--color-mute);
  pointer-events: none;
}
.sm-list__label {
  color: var(--color-mute);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
}
.sm-list__label::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .95em;
  width: 7px;
  height: 1.5px;
  background: var(--color-mute);
}

/* 下の階層（個別ページ・カテゴリー） */
.sm-list--sub {
  margin: 4px 0 10px 16px;
  padding-left: 12px;
  border-left: 1px solid var(--color-line);
}
.sm-list--sub > li {
  margin-bottom: 2px;
  font-size: 14px;
}
.sm-list--sub > li > a {
  padding-left: 0;
  color: var(--color-ink-soft);
}
.sm-list--sub > li > a::before {
  content: none;
}

/* 別サイトの印 */
.sm-ext::after {
  content: "";
  display: inline-block;
  width: 11px;
  height: 11px;
  margin-left: 6px;
  vertical-align: -1px;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><path d='M14 4h6v6'/><path d='M20 4L10 14'/><path d='M18 13v6a1 1 0 0 1-1 1H5a1 1 0 0 1-1-1V7a1 1 0 0 1 1-1h6'/></svg>") no-repeat center / contain;
}

/* ========================================
   Responsive
======================================== */
@media (max-width: 1024px) {
  .sm-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .sm-grid { grid-template-columns: 1fr; gap: 32px; }
  .sm-title { font-size: 24px; }
  .sm-lead { font-size: 14px; }
  .sm-group__title { font-size: 16px; }
  .sm-list > li { font-size: 14px; }
  .sm-list--sub > li { font-size: 13px; }
  /* 指で押しやすい高さを確保 */
  .sm-list > li > a { padding-block: 4px; }
}