/* =========================================
   マッチング対策 連載：記事ページ（column/*.html）
   ベースの css/style.css（デザイントークン）に追加して読み込む
   ========================================= */
.ar {
  padding: 96px 0 var(--space-24);
  background-color: var(--color-white);
}

.ar-container {
  max-width: 760px;
}

.ar-breadcrumb {
  margin-bottom: 24px;
  font-size: 12px;
  color: var(--color-text-weak);
}

.ar-breadcrumb a {
  color: var(--color-text-weak);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.ar-breadcrumb a:hover {
  color: var(--color-primary);
}

/* ---- 記事ヘッダー ---- */
.ar-head {
  padding-bottom: 28px;
  border-bottom: 1px solid var(--color-border);
}

.ar-head__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary);
}

.ar-head__group {
  padding: 2px 10px;
  border-radius: var(--radius-btn);
  color: var(--color-white);
  background-color: var(--color-primary);
}

.ar-head__title {
  margin: 0;
  font-size: clamp(24px, 4.2vw, 34px);
  font-weight: 700;
  line-height: 1.5;
}

/* ---- 本文 ---- */
.ar-body {
  padding-top: 32px;
  font-size: 16px;
  line-height: 2;
  color: var(--color-text);
}

.ar-body p {
  margin: 0 0 1.4em;
}

.ar-body strong {
  font-weight: 700;
}

.ar-lead {
  margin: 0 0 2em;
  padding: 20px 24px;
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.9;
  background-color: var(--color-bg-light);
}

.ar-body .ar-lead {
  margin-bottom: 2em;
}

.ar-h2 {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 2.6em 0 1em;
  font-size: 22px;
  font-weight: 700;
  line-height: 1.6;
}

.ar-h2::before {
  content: "";
  flex-shrink: 0;
  width: 4px;
  height: 1em;
  border-radius: 2px;
  background-color: var(--color-primary);
  transform: translateY(2px);
}

.ar-h3 {
  margin: 2.4em 0 0.8em;
  padding: 12px 16px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.7;
  background-color: var(--color-bg-light);
}

.ar-list {
  margin: 0 0 1.6em;
  padding-left: 1.4em;
}

.ar-list li {
  margin-bottom: 0.5em;
  padding-left: 0.2em;
}

.ar-table-wrap {
  margin: 0 0 1.8em;
  overflow-x: auto;
}

.ar-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.7;
}

.ar-table th,
.ar-table td {
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  text-align: left;
}

.ar-table th {
  font-weight: 700;
  white-space: nowrap;
  background-color: var(--color-bg-light);
}

/* ---- 前後の記事・戻る ---- */
.ar-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 56px;
}

.ar-pager__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  color: var(--color-text);
  text-decoration: none;
  transition: background-color var(--transition-base), border-color var(--transition-base);
}

.ar-pager__item:hover {
  border-color: var(--color-primary);
  background-color: var(--color-hover-bg);
}

.ar-pager__item--next {
  grid-column: 2;
  text-align: right;
}

.ar-pager__dir {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-primary);
}

.ar-pager__title {
  font-size: 14px;
  font-weight: 700;
  line-height: 1.6;
}

.ar-back {
  margin: 28px 0 0;
  font-size: 14px;
  text-align: center;
}

.ar-back a {
  color: var(--color-text-weak);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.ar-back a:hover {
  color: var(--color-primary);
}

@media (max-width: 640px) {
  .ar {
    padding-top: 84px;
  }

  .ar-body {
    font-size: 15px;
  }

  .ar-lead {
    padding: 16px 18px;
    font-size: 16px;
  }

  .ar-h2 {
    font-size: 19px;
  }

  .ar-pager {
    grid-template-columns: 1fr;
  }

  .ar-pager__item--next {
    grid-column: auto;
  }
}