@charset "utf-8";
/*------------------------------------------------------------------
  コラム用CSS（トップのコラムブロック／コラム一覧／コラム詳細）
  配置場所：テーマ内 css/column.css
------------------------------------------------------------------*/

:root {
  --column-main: #2c6fb2;
  --column-navy: #013e7d;
  --column-sub: #007bc7;
  --column-light: #e9f3ff;
  --column-ink: #2c2c2c;
  --column-border: #dde4f0;
}

/*------------------------------------------------------------------
  トップページ：コラムブロック
------------------------------------------------------------------*/
.column-top {
  max-width: 1000px;
  margin: 0 auto;
  padding: 40px 20px;
}
.column-top-list {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--column-border);
}
.column-top-list li {
  border-bottom: 1px solid var(--column-border);
}
.column-top-list a {
  display: flex;
  align-items: baseline;
  gap: 20px;
  padding: 18px 10px;
  text-decoration: none;
  color: var(--column-ink);
  transition: background-color .2s;
}
.column-top-list a:hover {
  background-color: var(--column-light);
}
.column-top-date {
  flex-shrink: 0;
  font-size: 14px;
  color: var(--column-main);
  font-weight: 600;
  letter-spacing: .05em;
}
.column-top-title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
}
.column-button-wrap {
  display: flex;
  justify-content: center;
  margin-top: 30px;
}
.column-button {
  display: inline-block;
  min-width: 220px;
  padding: 12px 24px;
  border-radius: 6px;
  background-color: var(--column-main);
  color: #fff;
  font-size: 16px;
  text-align: center;
  text-decoration: none;
  transition: background-color .3s;
}
.column-button:hover {
  background-color: var(--column-sub);
  color: #fff;
}

/*------------------------------------------------------------------
  コラム一覧・詳細 共通
------------------------------------------------------------------*/
.column-page {
  color: var(--column-ink);
  font-family: 'Noto Sans JP', sans-serif;
  line-height: 1.8;
}
.column-page a {
  text-decoration: none;
}
.column-hero {
  padding: 70px 20px 60px;
  text-align: center;
  background: linear-gradient(135deg, var(--column-light) 0%, #fff 100%);
  border-bottom: 3px solid var(--column-main);
}
.column-hero-en {
  margin: 0 0 8px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .3em;
  color: var(--column-main);
}
.column-hero-title {
  margin: 0;
  font-size: 34px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--column-navy);
}
.column-breadcrumb {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px;
  font-size: 13px;
  color: #666;
}
.column-breadcrumb a {
  color: var(--column-main);
}
.column-breadcrumb a:hover {
  text-decoration: underline;
}
.column-breadcrumb .sep {
  margin: 0 8px;
  color: #999;
}

/*------------------------------------------------------------------
  コラム一覧
------------------------------------------------------------------*/
.column-archive {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px 20px 80px;
}
.column-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
.column-card {
  background: #fff;
  border: 1px solid var(--column-border);
  border-radius: 8px;
  overflow: hidden;
  transition: transform .2s, box-shadow .2s;
}
.column-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(1, 62, 125, .12);
}
.column-card a {
  display: block;
  color: var(--column-ink);
}
.column-card-thumb {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: linear-gradient(135deg, var(--column-light), #fff);
}
.column-card-thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.column-card-thumb.noimage {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--column-main);
}
.column-card-body {
  padding: 18px 20px 22px;
}
.column-card-date {
  margin: 0 0 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--column-main);
  letter-spacing: .05em;
}
.column-card-title {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
}
.column-empty {
  padding: 60px 0;
  text-align: center;
}

/* ページ送り */
.column-pager {
  margin-top: 50px;
  text-align: center;
}
.column-pager .page-numbers {
  display: inline-block;
  min-width: 40px;
  margin: 0 3px;
  padding: 8px 12px;
  border: 1px solid var(--column-border);
  border-radius: 4px;
  color: var(--column-main);
  line-height: 1.4;
}
.column-pager .page-numbers.current,
.column-pager a.page-numbers:hover {
  background: var(--column-main);
  border-color: var(--column-main);
  color: #fff;
}
.column-pager .page-numbers.dots {
  border: none;
}

/*------------------------------------------------------------------
  コラム詳細
------------------------------------------------------------------*/
.column-single {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px 20px 80px;
}
.column-single-head {
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--column-border);
}
.column-single-date {
  margin: 0 0 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--column-main);
  letter-spacing: .05em;
}
.column-single-title {
  margin: 0;
  font-size: 28px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--column-navy);
}
.column-single-thumb {
  margin: 0 0 30px;
}
.column-single-thumb img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
}

/* 本文（見出しを設定するとこのデザインで表示されます） */
.column-body {
  font-size: 16px;
  line-height: 2;
  word-wrap: break-word;
}
.column-body > *:first-child {
  margin-top: 0;
}
.column-body p {
  margin: 0 0 1.6em;
  font-size: 16px;
  line-height: 2;
}
.column-body h2 {
  margin: 2.6em 0 1em;
  padding: .6em 1em;
  background: linear-gradient(90deg, var(--column-light), #fff);
  border-left: 6px solid var(--column-main);
  border-bottom: 1px solid var(--column-border);
  color: var(--column-navy);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.5;
}
.column-body h3 {
  margin: 2.2em 0 .9em;
  padding: 0 0 .4em;
  border-bottom: 2px solid var(--column-main);
  color: var(--column-navy);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.5;
}
.column-body h4 {
  margin: 2em 0 .8em;
  padding-left: 1.1em;
  position: relative;
  color: var(--column-navy);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
}
.column-body h4::before {
  content: "";
  position: absolute;
  left: 0;
  top: .5em;
  width: .6em;
  height: .6em;
  border-radius: 50%;
  background: var(--column-sub);
}
.column-body a {
  color: var(--column-main);
  text-decoration: underline;
}
.column-body a:hover {
  color: var(--column-sub);
}
.column-body strong {
  font-weight: 700;
  background: linear-gradient(transparent 65%, #cfe4fa 65%);
}
.column-body ul,
.column-body ol {
  margin: 0 0 1.6em;
  padding: 1.2em 1.4em 1.2em 2.4em;
  background: #f7fafd;
  border-radius: 6px;
}
.column-body ul {
  list-style: disc;
}
.column-body ol {
  list-style: decimal;
}
.column-body li {
  margin: .3em 0;
  font-family: 'Noto Sans JP', sans-serif;
  line-height: 1.8;
}
.column-body blockquote {
  margin: 0 0 1.6em;
  padding: 1em 1.4em;
  border-left: 4px solid var(--column-border);
  background: #f8f8f8;
  color: #555;
}
.column-body figure {
  margin: 0 0 1.6em;
}
.column-body img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
}
.column-body figcaption {
  margin-top: .5em;
  font-size: 13px;
  color: #666;
  text-align: center;
}
.column-body table {
  width: 100%;
  margin: 0 0 1.6em;
  border-collapse: collapse;
}
.column-body th,
.column-body td {
  padding: 10px 14px;
  border: 1px solid var(--column-border);
  font-size: 15px;
  line-height: 1.7;
}
.column-body th {
  background: var(--column-light);
  color: var(--column-navy);
  font-weight: 700;
}
.column-body hr {
  margin: 2.4em 0;
  border: none;
  border-top: 1px solid var(--column-border);
}

/* 前後の記事・一覧へ戻る */
.column-nav {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 60px;
  padding-top: 30px;
  border-top: 1px solid var(--column-border);
}
.column-nav-item {
  flex: 1;
  min-width: 0;
  font-size: 14px;
}
.column-nav-item.next {
  text-align: right;
}
.column-nav-item span {
  display: block;
  margin-bottom: 4px;
  font-size: 12px;
  font-weight: 700;
  color: var(--column-main);
  letter-spacing: .1em;
}
.column-nav-item a {
  color: var(--column-ink);
  line-height: 1.6;
}
.column-nav-item a:hover {
  color: var(--column-main);
}

/*------------------------------------------------------------------
  スマホ
------------------------------------------------------------------*/
@media (max-width: 900px) {
  .column-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}
@media (max-width: 767px) {
  .column-top {
    padding: 20px 15px;
  }
  .column-top-list a {
    flex-direction: column;
    gap: 4px;
    padding: 14px 6px;
  }
  .column-hero {
    padding: 45px 15px 40px;
  }
  .column-hero-title {
    font-size: 24px;
  }
  .column-breadcrumb {
    padding: 12px 15px;
    font-size: 11px;
  }
  .column-archive {
    padding: 10px 15px 50px;
  }
  .column-grid {
    grid-template-columns: 1fr;
  }
  .column-single {
    padding: 10px 15px 50px;
  }
  .column-single-title {
    font-size: 22px;
  }
  .column-body,
  .column-body p {
    font-size: 15px;
  }
  .column-body h2 {
    font-size: 19px;
  }
  .column-body h3 {
    font-size: 17px;
  }
  .column-body h4 {
    font-size: 16px;
  }
  .column-nav {
    flex-direction: column;
  }
  .column-nav-item.next {
    text-align: left;
  }
}