/* ============================================================
   page-column.css — コラム一覧ページ
   ============================================================ */

/* ── Hero (centered) ─────────────────────────────── */
.sec-column-hero {
  background: var(--paper);
  padding: 72px 40px 36px;
  text-align: center;
}
.sec-column-hero__en {
  font-family: Outfit, sans-serif;
  font-weight: 700;
  font-size: 56px;
  color: var(--navy);
  line-height: 1;
  margin: 0;
  letter-spacing: .02em;
}
.sec-column-hero__ja {
  font-weight: 500;
  font-size: 17px;
  color: var(--navy);
  margin: 14px 0 0;
  letter-spacing: .12em;
}

/* ── Search bar + filter tags ─────────────────────── */
.sec-column-filter {
  background: var(--paper);
  padding: 8px 40px 32px;
}
.sec-column-filter__inner {
  max-width: 760px;
  margin: 0 auto;
}
.column-search {
  display: flex;
  align-items: stretch;
  gap: 0;
  background: #fff;
  border: 1px solid #d6e3f1;
  border-radius: 8px;
  overflow: hidden;
  margin: 0 0 22px;
}
.column-search__input {
  flex: 1;
  border: 0;
  outline: 0;
  font: inherit;
  font-size: 14px;
  background: transparent;
  color: #222;
  padding: 14px 22px;
}
.column-search__input::placeholder { color: #a8b2c0; }
.column-search__btn {
  border: 0;
  background: var(--navy);
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  padding: 0 32px;
  cursor: pointer;
  letter-spacing: .04em;
  transition: filter .2s ease;
}
.column-search__btn:hover { filter: brightness(1.1); }

.column-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.column-tag {
  display: inline-flex;
  align-items: center;
  background: #fff;
  color: var(--navy);
  font-weight: 700;
  font-size: 13px;
  padding: 8px 22px;
  border: 1px solid #d6e3f1;
  border-radius: 999px;
  text-decoration: none;
  cursor: pointer;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}
.column-tag:hover,
.column-tag.is-active {
  background: var(--navy);
  color: #fff;
  border-color: var(--navy);
}

/* ── Article grid (4 columns) ────────────────────── */
.sec-column-list {
  background: var(--paper);
  padding: 24px 40px 56px;
}
.sec-column-list__inner {
  max-width: 1320px;
  margin: 0 auto;
}
.column-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px 24px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.column-card {
  background: #fff;
  border: 1px solid #e3e3e3;
  border-radius: 4px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  transition: transform .25s ease, box-shadow .25s ease;
}
.column-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(37, 66, 107, .12);
}
.column-card__thumb {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #f5f7fa;
  border: 0;
  border-radius: 0;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
}
.column-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.column-card__thumb--placeholder {
  background: #f5f7fa;
  color: #aab2bd;
  font-size: 14px;
}
.column-card__cat {
  display: inline-block;
  background: var(--navy);
  color: #fff;
  font-weight: 700;
  font-size: 12px;
  padding: 4px 14px;
  border-radius: 2px;
  letter-spacing: .04em;
  align-self: flex-start;
  margin: 18px 0 10px 18px;
}
.column-card__title {
  font-weight: 800;
  font-size: 16px;
  color: var(--navy);
  margin: 0 0 8px;
  padding: 0 18px;
  line-height: 1.55;
}
.column-card__excerpt {
  font-size: 12.5px;
  line-height: 1.75;
  color: #4d4d4d;
  margin: 0 0 12px;
  padding: 0 18px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.column-card__date {
  font-family: Outfit, sans-serif;
  font-weight: 500;
  font-size: 12px;
  color: #777;
  letter-spacing: .04em;
  padding: 0 18px 18px;
  margin: 0;
}

/* ── もっと見る button ───────────────────────────── */
.column-loadmore-wrap {
  display: flex;
  justify-content: center;
  margin: 48px 0 0;
}
.column-loadmore {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  background: transparent;
  border: 1px solid var(--navy);
  color: var(--navy);
  font-weight: 700;
  font-size: 14px;
  padding: 14px 56px;
  border-radius: 999px;
  text-decoration: none;
  cursor: pointer;
  transition: background .25s ease, color .25s ease;
}
.column-loadmore:hover {
  background: var(--navy);
  color: #fff;
}
.column-loadmore__arrow {
  display: inline-block;
  transition: transform .25s ease;
}
.column-loadmore:hover .column-loadmore__arrow { transform: translateY(3px); }

/* ── Contact bar (case-page style) ───────────────── */
.sec-column-contact {
  background: #fff;
  padding: 72px 40px 80px;
}
.sec-column-contact__inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  gap: 28px 56px;
  align-items: end;
}
.sec-column-contact__title { grid-row: 1; grid-column: 1; }
.sec-column-contact__title-en {
  font-family: Outfit, sans-serif;
  font-weight: 700;
  font-size: 56px;
  color: var(--navy);
  line-height: 1;
  margin: 0;
  letter-spacing: .02em;
}
.sec-column-contact__title-ja {
  font-size: 14px;
  color: var(--navy);
  margin: 10px 0 0;
  letter-spacing: .12em;
}
.sec-column-contact__lede {
  grid-row: 1;
  grid-column: 2;
  font-size: 16px;
  color: #222;
  margin: 0 0 8px;
  line-height: 1.85;
}
.sec-column-contact__btn {
  grid-row: 2;
  grid-column: 1 / -1;
  justify-self: center;
  display: inline-flex;
  align-items: center;
  gap: 20px;
  background: var(--yellow);
  color: var(--navy);
  font-weight: 700;
  font-size: 22px;
  padding: 24px 80px;
  text-decoration: none;
  border-radius: 8px;
  min-width: 640px;
  justify-content: center;
  position: relative;
  transition: transform .25s ease, filter .25s ease;
}
.sec-column-contact__btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.05);
}
.sec-column-contact__btn-icon {
  width: 32px;
  height: 32px;
  flex: 0 0 32px;
  color: var(--navy);
}
.sec-column-contact__btn-arrow {
  position: absolute;
  right: 28px;
}
.sec-column-contact__btn-arrow svg { width: 26px; height: 26px; }

/* ── Responsive ──────────────────────────────────── */
@media (max-width: 1023px) {
  .sec-column-hero { padding: 56px 32px 28px; }
  .sec-column-hero__en { font-size: 44px; }
  .sec-column-filter { padding: 8px 32px 24px; }
  .sec-column-list { padding: 16px 32px 48px; }
  .column-grid { grid-template-columns: repeat(2, 1fr); gap: 24px 18px; }
  .sec-column-contact { padding: 56px 32px 64px; }
  .sec-column-contact__inner { grid-template-columns: 1fr; gap: 24px; }
  .sec-column-contact__title,
  .sec-column-contact__lede { grid-row: auto; grid-column: 1; }
  .sec-column-contact__lede { font-size: 15px; }
  .sec-column-contact__btn { grid-row: auto; grid-column: 1; min-width: 0; width: 100%; padding: 22px 60px; font-size: 18px; }
  .sec-column-contact__title-en { font-size: 44px; }
}
@media (max-width: 767px) {
  .sec-column-hero { padding: 40px 20px 24px; }
  .sec-column-hero__en { font-size: 36px; }
  .sec-column-hero__ja { font-size: 14px; }
  .sec-column-filter { padding: 8px 20px 20px; }
  .column-search__input { font-size: 13px; padding: 12px 16px; }
  .column-search__btn { padding: 0 20px; font-size: 13px; }
  .column-tag { font-size: 12px; padding: 7px 16px; }
  .sec-column-list { padding: 8px 20px 40px; }
  .column-grid { grid-template-columns: 1fr; gap: 20px; }
  .column-card__thumb { aspect-ratio: 16 / 10; }
  .column-loadmore { padding: 12px 40px; font-size: 13px; }
  .sec-column-contact { padding: 40px 20px 56px; }
  .sec-column-contact__title-en { font-size: 36px; }
  .sec-column-contact__lede { font-size: 14px; }
  .sec-column-contact__btn { font-size: 16px; padding: 18px 56px 18px 20px; gap: 14px; }
  .sec-column-contact__btn-icon { width: 26px; height: 26px; flex-basis: 26px; }
  .sec-column-contact__btn-arrow { right: 18px; }
  .sec-column-contact__btn-arrow svg { width: 20px; height: 20px; }
}

/* ============================================================
   Column Detail Page
   ============================================================ */

/* ── 2 カラム本体 (記事本文 + 右サイドバー) ───── */
.sec-col-detail {
  background: var(--paper);
  padding: 32px 40px 64px;
}
.sec-col-detail__inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 56px;
  align-items: start;
}
.col-detail-main { min-width: 0; }

/* Hero photo (large placeholder) */
.col-detail-hero {
  aspect-ratio: 16 / 10;
  background: #fff;
  border: 1px solid #e3e3e3;
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #aab2bd;
  font-size: 22px;
  margin: 0 0 24px;
  overflow: hidden;
}
.col-detail-hero img { width: 100%; height: 100%; object-fit: cover; display: block; }

.col-detail-cat {
  display: inline-block;
  background: var(--navy);
  color: #fff;
  font-weight: 700;
  font-size: 12px;
  padding: 4px 18px;
  border-radius: 2px;
  letter-spacing: .04em;
  margin: 0 0 14px;
}
.col-detail-title {
  font-weight: 800;
  font-size: 28px;
  color: var(--navy);
  margin: 0 0 12px;
  line-height: 1.55;
  letter-spacing: .02em;
}
.col-detail-date {
  font-family: Outfit, sans-serif;
  font-weight: 500;
  font-size: 13px;
  color: #777;
  margin: 0 0 28px;
  letter-spacing: .04em;
}

/* TOC */
.col-detail-toc {
  background: #fff;
  border: 1px solid #d6e3f1;
  padding: 22px 28px 22px;
  margin: 0 0 28px;
}
.col-detail-toc__head {
  font-weight: 800;
  font-size: 16px;
  color: var(--navy);
  margin: 0 0 14px;
}
.col-detail-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.col-detail-toc__list li { padding: 6px 0; }
.col-detail-toc__list a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--navy);
  text-decoration: none;
  transition: color .2s ease;
}
.col-detail-toc__list a::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--yellow);
  border-radius: 50%;
  flex: 0 0 8px;
}
.col-detail-toc__list a:hover { color: #0a2a52; }

/* Body text paragraphs */
.col-detail-body p {
  font-size: 14px;
  line-height: 2;
  color: #333;
  margin: 0 0 14px;
}

/* Section h2 with dotted divider */
.col-detail-h2 {
  font-weight: 800;
  font-size: 22px;
  color: var(--navy);
  margin: 36px 0 6px;
  letter-spacing: .02em;
}
.col-detail-h2-divider {
  border-bottom: 3px dotted var(--navy);
  margin: 0 0 18px;
  height: 0;
}

/* Author bio card */
.col-detail-author {
  margin: 44px 0 0;
  padding: 22px 28px 24px;
  background: #fff;
  border-left: 4px solid var(--navy);
  border-radius: 2px;
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 20px;
  align-items: start;
}
.col-detail-author__photo {
  width: 84px;
  height: 84px;
  border-radius: 50%;
  background: #e3e3e3;
  overflow: hidden;
}
.col-detail-author__photo img { width: 100%; height: 100%; object-fit: cover; }
.col-detail-author__head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin: 0 0 10px;
  flex-wrap: wrap;
}
.col-detail-author__name {
  font-weight: 800;
  font-size: 18px;
  color: var(--navy);
  margin: 0;
}
.col-detail-author__title {
  font-size: 12px;
  color: var(--navy);
  margin: 0;
  letter-spacing: .04em;
}
.col-detail-author__body {
  font-size: 13px;
  line-height: 1.9;
  color: #4d4d4d;
  margin: 0;
}

/* Sidebar */
.col-detail-sidebar { position: sticky; top: 16px; }
.col-detail-sidebar__section { margin: 0 0 36px; }
.col-detail-sidebar__head {
  font-weight: 800;
  font-size: 15px;
  color: var(--navy);
  margin: 0 0 16px;
  letter-spacing: .04em;
}
.col-detail-sidebar__tags {
  display: flex;
  flex-direction: column;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.col-detail-sidebar__tag {
  display: inline-block;
  background: #fff;
  border: 1px solid #d6e3f1;
  border-radius: 999px;
  padding: 8px 22px;
  font-size: 13px;
  font-weight: 700;
  color: var(--navy);
  text-decoration: none;
  text-align: center;
  transition: background .2s ease, color .2s ease;
}
.col-detail-sidebar__tag:hover {
  background: var(--navy);
  color: #fff;
}

/* Popular articles in sidebar */
.col-detail-sidebar__popular {
  list-style: none;
  margin: 0;
  padding: 0;
}
.col-detail-sidebar__popular li { margin: 0 0 18px; }
.col-detail-sidebar__popular a {
  display: block;
  text-decoration: none;
  color: inherit;
}
.col-detail-popular-thumb {
  aspect-ratio: 16 / 10;
  background: #fff;
  border: 1px solid #e3e3e3;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #aab2bd;
  font-size: 13px;
  margin: 0 0 8px;
  overflow: hidden;
}
.col-detail-popular-thumb img { width: 100%; height: 100%; object-fit: cover; }
.col-detail-popular-cat {
  display: inline-block;
  background: var(--navy);
  color: #fff;
  font-weight: 700;
  font-size: 11px;
  padding: 3px 12px;
  border-radius: 2px;
  margin: 0 0 6px;
}
.col-detail-popular-title {
  font-weight: 800;
  font-size: 14px;
  color: var(--navy);
  margin: 0 0 4px;
  line-height: 1.5;
}
.col-detail-popular-date {
  font-family: Outfit, sans-serif;
  font-size: 11px;
  color: #777;
  letter-spacing: .04em;
}

/* ── Related articles section ────────────────── */
.sec-col-related {
  background: var(--paper);
  padding: 24px 40px 80px;
}
.sec-col-related__inner { max-width: 1280px; margin: 0 auto; }
.sec-col-related__head {
  font-weight: 800;
  font-size: 17px;
  color: var(--navy);
  margin: 0 0 24px;
}
.sec-col-related__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px 24px;
  list-style: none;
  margin: 0;
  padding: 0;
}

/* ── Responsive ──────────────────────────────── */
@media (max-width: 1023px) {
  .sec-col-detail { padding: 24px 32px 56px; }
  .sec-col-detail__inner { grid-template-columns: 1fr; gap: 40px; }
  .col-detail-sidebar { position: static; }
  .col-detail-title { font-size: 24px; }
  .col-detail-h2 { font-size: 19px; }
  .sec-col-related { padding: 16px 32px 64px; }
  .sec-col-related__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767px) {
  .sec-col-detail { padding: 16px 20px 48px; }
  .col-detail-title { font-size: 20px; }
  .col-detail-toc { padding: 18px 20px; }
  .col-detail-h2 { font-size: 17px; }
  .col-detail-body p { font-size: 13.5px; line-height: 1.95; }
  .col-detail-author { grid-template-columns: 64px 1fr; gap: 14px; padding: 18px 20px; }
  .col-detail-author__photo { width: 64px; height: 64px; }
  .col-detail-author__name { font-size: 16px; }
  .col-detail-author__title { font-size: 11px; }
  .sec-col-related { padding: 16px 20px 48px; }
  .sec-col-related__grid { grid-template-columns: 1fr; gap: 20px; }
}