/* ============================================================
   건설칼럼 (목록 + 본문) — 애플 톤(라이트)
   등록기준 상세 페이지와 동일 팔레트: 잉크 #1d1d1f · 블루 #ff385c
   ============================================================ */
:root {
  --col-ink: #1d1d1f;
  --col-blue: #ff385c;
  --col-cyan: #ff5a75;
  --col-muted: #6e6e73;
  --col-line: #d2d2d7;
  --col-surface: #f5f5f7;
  --col-soft: #fff0f3;
}

/* ── 컬럼 페이지 헤더: 화이트(라이트 히어로 위에서도 보이도록) ── */
.column-list-page .site-header,
.column-article-page .site-header { background: #fff; color: var(--col-ink); border-bottom: 1px solid var(--col-line); }
.column-list-page .site-logo__image,
.column-article-page .site-logo__image { filter: none; }
.column-list-page .site-nav__link,
.column-article-page .site-nav__link { color: var(--col-ink); text-shadow: none; }
.column-list-page .site-nav__item + .site-nav__item::before,
.column-article-page .site-nav__item + .site-nav__item::before { background: rgba(0,0,0,.18); }
.column-list-page .site-nav__link::after,
.column-article-page .site-nav__link::after { background: var(--col-ink); }

/* ── 목록 ── */
.col-list { background: #fff; }
.col-hero {
  position: relative;
  padding: 116px 24px 52px;
  text-align: center;
  background:
    radial-gradient(circle at 84% 22%, rgba(255, 56, 92,.08), transparent 26%),
    linear-gradient(180deg, #fff 0%, var(--col-surface) 100%);
}
.col-hero .col-eyebrow { display: inline-flex; align-items: center; gap: 9px; margin: 0 0 14px; color: var(--col-blue); font-size: 15px; font-weight: 800; letter-spacing: 0.08em; }
.col-hero .col-eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--col-cyan); }
.col-hero h1 { margin: 0; color: var(--col-ink); font-size: clamp(32px, 4.4vw, 52px); font-weight: 800; letter-spacing: -0.04em; }
.col-hero .col-lead { max-width: 640px; margin: 18px auto 0; color: #424245; font-size: 18px; line-height: 1.65; word-break: keep-all; }

.col-wrap { width: min(1120px, calc(100% - 44px)); margin: 0 auto; padding: 44px 0 96px; }
.col-cats { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-bottom: 38px; }
.col-chip { font: inherit; font-size: 14px; font-weight: 600; color: #424245; background: var(--col-surface); border: 1px solid transparent; border-radius: 999px; padding: 9px 18px; cursor: pointer; transition: 0.18s; }
.col-chip:hover { color: var(--col-blue); background: var(--col-soft); }
.col-chip.on { background: var(--col-ink); border-color: var(--col-ink); color: #fff; }

.col-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
@media (max-width: 960px) { .col-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .col-grid { grid-template-columns: 1fr; } }

.col-card { display: flex; flex-direction: column; background: #fff; border: 1px solid #ececee; border-radius: 18px; overflow: hidden; box-shadow: 0 1px 2px rgba(0,0,0,.04); transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease; text-decoration: none; }
.col-card:hover { transform: translateY(-4px); box-shadow: 0 18px 40px rgba(0,0,0,.10); border-color: #dfe3e8; }
.col-card.hide { display: none; }

/* 페이지네이션 */
.col-pager { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 8px; margin-top: 44px; }
.col-pager:empty { display: none; }
.col-page { font: inherit; font-size: 15px; font-weight: 700; min-width: 40px; height: 40px; padding: 0 12px; display: inline-flex; align-items: center; justify-content: center; color: #424245; background: #fff; border: 1px solid var(--col-line); border-radius: 10px; cursor: pointer; transition: 0.16s; }
.col-page:hover:not(:disabled) { color: var(--col-blue); border-color: var(--col-blue); background: var(--col-soft); }
.col-page.on { background: var(--col-ink); border-color: var(--col-ink); color: #fff; }
.col-page--nav { font-size: 18px; font-weight: 800; }
.col-page:disabled { opacity: .35; cursor: default; }
.col-thumb { position: relative; aspect-ratio: 1091 / 729; overflow: hidden; }
.col-thumb--ph { display: flex; align-items: center; justify-content: center; background: linear-gradient(150deg, #f2f2f4, #f5f5f7); position: relative; }
.col-thumb--ph::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(0,0,0,.03) 1px, transparent 1px), linear-gradient(90deg, rgba(0,0,0,.03) 1px, transparent 1px); background-size: 32px 32px; }
.col-thumb--ph span { position: relative; z-index: 1; color: var(--col-blue); font-size: 16px; font-weight: 800; letter-spacing: -0.02em; }
.col-body { display: flex; flex-direction: column; flex: 1; padding: 20px 20px 18px; }
.col-tags { display: flex; align-items: center; gap: 10px; margin-bottom: 11px; }
.col-cat2 { font-size: 12px; font-weight: 800; color: var(--col-blue); background: var(--col-soft); border-radius: 999px; padding: 4px 11px; }
.col-tags time { font-size: 12.5px; color: #86868b; }
.col-body h3 { font-size: 17px; font-weight: 800; color: var(--col-ink); letter-spacing: -0.02em; line-height: 1.5; margin: 0 0 9px; }
.col-body p { font-size: 14px; color: var(--col-muted); line-height: 1.7; flex: 1; margin: 0; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.col-meta { display: flex; justify-content: flex-end; margin-top: 15px; padding-top: 13px; border-top: 1px solid #f0f0f2; }
.col-meta span { font-size: 13px; font-weight: 700; color: var(--col-blue); }

/* ── 본문 ── */
.col-article { background: #fff; }
/* 본문 최상단 배너 (featured) — 헤더 아래 여백 확보 후 카드형으로 노출 */
.art-hero { padding: 104px 24px 0; background: #fff; }
.art-thumb {
  position: relative;
  width: min(880px, 100%);
  margin: 0 auto;
  aspect-ratio: 1091 / 729;
  overflow: hidden;
  border-radius: 20px;
  box-shadow: 0 22px 50px rgba(15, 30, 70, .12);
  border: 1px solid rgba(15, 30, 70, .06);
}
.art-thumb img { width: 100%; height: 100%; object-fit: cover; object-position: center top; display: block; }
/* 배너가 상단 여백을 담당하므로 제목 밴드의 위 여백은 줄인다 */
.column-article-page .art-band { padding-top: 30px; }
.art-band {
  position: relative;
  padding: 116px 24px 54px;
  text-align: center;
  background:
    radial-gradient(circle at 84% 24%, rgba(255, 56, 92,.08), transparent 26%),
    linear-gradient(180deg, #fff 0%, var(--col-surface) 100%);
}
.art-band .art-cat { display: inline-block; background: var(--col-soft); border: 1px solid #ffd9e0; color: var(--col-blue); font-size: 13px; font-weight: 700; padding: 5px 15px; border-radius: 999px; margin-bottom: 16px; }
.art-band h1 { max-width: 820px; margin: 0 auto; font-size: clamp(24px, 3.4vw, 36px); font-weight: 800; color: var(--col-ink); letter-spacing: -0.03em; line-height: 1.45; }
.art-band .art-meta { margin-top: 16px; font-size: 14px; color: #86868b; }
.art-band .art-meta b { color: #424245; font-weight: 700; }

.art-wrap { max-width: 800px; margin: 0 auto; padding: 52px 24px 24px; }
.art-lead { background: var(--col-soft); border: 1px solid #ffd9e0; border-radius: 16px; padding: 24px 26px; margin-bottom: 38px; }
.art-lead strong { display: block; font-size: 15px; font-weight: 800; color: var(--col-blue); margin-bottom: 10px; }
.art-lead p { font-size: 15.5px; color: #33415c; line-height: 1.85; margin: 0 0 12px; }
.art-lead p:last-child { margin-bottom: 0; }
.art-lead ul { margin: 0; padding-left: 20px; }
.art-lead ul li { font-size: 15px; color: #33415c; line-height: 1.9; margin: 5px 0; }

.art-toc { border: 1px solid var(--col-line); border-radius: 14px; padding: 22px 26px; margin-bottom: 44px; background: #fff; }
.art-toc strong { display: block; font-size: 14px; font-weight: 800; color: var(--col-ink); margin-bottom: 12px; }
.art-toc ol { margin: 0; padding-left: 20px; }
.art-toc li { margin: 6px 0; }
.art-toc a { font-size: 14.5px; color: var(--col-blue); text-decoration: none; }
.art-toc a:hover { text-decoration: underline; }

.art-wrap h2 { font-size: clamp(20px, 2.4vw, 26px); font-weight: 800; color: var(--col-ink); letter-spacing: -0.03em; margin: 52px 0 18px; scroll-margin-top: 90px; }
.art-wrap h2::before { content: ""; display: block; width: 30px; height: 3px; border-radius: 2px; background: var(--col-blue); margin-bottom: 14px; }
.art-wrap h3 { font-size: 17.5px; font-weight: 800; color: var(--col-ink); margin: 30px 0 12px; }
.art-wrap p { font-size: 16px; color: #424245; line-height: 1.95; margin: 0 0 18px; }
.art-wrap p b { color: var(--col-ink); }
.art-wrap ul { margin: 0 0 20px; padding-left: 22px; }
.art-wrap ul li { font-size: 15.5px; color: #424245; line-height: 1.9; margin: 7px 0; }
@media (max-width: 560px) { .art-wrap p br, .art-lead p br { display: none; } }

/* 표 — 애플 라이트 톤 (진한 헤더 제거) */
.art-tbl { width: 100%; border-collapse: collapse; margin: 10px 0 26px; font-size: 15px; }
.art-tbl th { background: var(--col-surface); color: var(--col-ink); font-weight: 700; padding: 14px 16px; text-align: left; border-bottom: 2px solid var(--col-line); }
.art-tbl td { padding: 14px 16px; border-bottom: 1px solid #ececee; color: #424245; line-height: 1.7; vertical-align: top; }
.art-tbl tr:last-child td { border-bottom: 0; }
.art-tbl tr td:first-child { font-weight: 700; color: var(--col-ink); white-space: nowrap; }
@media (max-width: 560px) { .art-tbl { font-size: 13.5px; } .art-tbl th, .art-tbl td { padding: 11px 12px; } }

/* 강조박스 — 중립 라이트 카드 */
.art-note { background: var(--col-surface); border: 1px solid var(--col-line); border-radius: 14px; padding: 18px 20px; font-size: 15px; color: #424245; line-height: 1.8; margin: 0 0 22px; }
.art-note b { color: var(--col-ink); }
.art-note p { font-size: inherit; color: inherit; line-height: inherit; margin: 0 0 9px; }
.art-note p:last-child { margin-bottom: 0; }
.art-wrap .ta-c { text-align: center; }
.art-wrap .ta-r { text-align: right; }

/* 본문 뒤 CTA·관련칼럼·목록 */
.art-after { padding-top: 8px; padding-bottom: 80px; }
.col-cta { display: flex; align-items: center; justify-content: center; height: 54px; border-radius: 14px; background: var(--col-blue); color: #fff; font-size: 16px; font-weight: 700; text-decoration: none; transition: background .2s ease, transform .2s ease; }
.col-cta:hover { background: var(--col-blue-hover, #e00b41); transform: translateY(-1px); }
.art-links { background: var(--col-surface); border: 1px solid var(--col-line); border-radius: 14px; padding: 22px 24px; margin: 30px 0 8px; }
.art-links strong { display: block; font-size: 14.5px; font-weight: 800; color: var(--col-ink); margin-bottom: 12px; }
.art-links a { display: block; font-size: 15px; color: var(--col-blue); font-weight: 600; text-decoration: none; padding: 9px 0; border-bottom: 1px solid #ececee; }
.art-links a:last-child { border-bottom: 0; }
.art-links a:hover { text-decoration: underline; }
.col-back { display: inline-block; margin-top: 22px; color: var(--col-muted); font-size: 15px; font-weight: 700; text-decoration: none; }
.col-back:hover { color: var(--col-blue); }

@media (max-width: 900px) {
  .col-hero { padding-top: 92px; }
  .art-hero { padding-top: 84px; }
}

/* ── FAQ 아코디언 ── */
.art-faq { margin-top: 46px; }
.faq-acc { display: flex; flex-direction: column; gap: 10px; }
.faq-q { border: 1px solid var(--col-line); border-radius: 14px; background: #fff; overflow: hidden; transition: background-color .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease; }
@media (hover: hover) and (pointer: fine) {
  .faq-q:hover { background: var(--col-surface); border-color: #c7ccd3; box-shadow: 0 8px 22px rgba(0,0,0,.06); transform: translateY(-2px); }
  .faq-q:hover .faq-q__btn i { background: #e6ebf2; }
}
@media (prefers-reduced-motion: reduce) {
  .faq-q { transition: none; }
  .faq-q:hover { transform: none; }
}
.faq-q__btn { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 14px; text-align: left; background: none; border: 0; cursor: pointer; font: inherit; font-size: 16px; font-weight: 700; color: var(--col-ink); padding: 19px 22px; }
.faq-q__btn i { flex: none; width: 22px; height: 22px; border-radius: 50%; background: var(--col-surface); position: relative; transition: background .25s ease; }
.faq-q__btn i::before, .faq-q__btn i::after { content: ""; position: absolute; top: 50%; left: 50%; width: 10px; height: 2px; background: var(--col-blue); transform: translate(-50%, -50%); }
.faq-q__btn i::after { transform: translate(-50%, -50%) rotate(90deg); transition: transform .25s ease; }
.faq-q.open .faq-q__btn i { background: var(--col-blue); }
.faq-q.open .faq-q__btn i::before, .faq-q.open .faq-q__btn i::after { background: #fff; }
.faq-q.open .faq-q__btn i::after { transform: translate(-50%, -50%) rotate(0deg); }
.faq-q__a { max-height: 0; overflow: hidden; transition: max-height .28s ease; }
.faq-q.open .faq-q__a { max-height: 480px; }
.faq-q__a p { margin: 0; padding: 0 22px 20px; font-size: 15px; line-height: 1.8; color: var(--col-muted); }

.col-thumb__img { width: 100%; height: 100%; object-fit: cover; object-position: center top; display: block; }