/* HEKI コラム。色はLP（../index.html）と同じ */
:root {
  --bg: #F9F5F6;
  --panel: #FFFFFF;
  --ink: #2B1B27;
  --muted: #857580;
  --line: #ECE2E6;
  --brand: #9A5A70;
  --brand-dark: #834A5E;
  --brand-deep: #6A3A4B;
  --brand-soft: #F8EFF2;
  --brand-soft2: #F0DEE4;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: "Zen Kaku Gothic New", "Hiragino Sans", "Noto Sans JP", sans-serif; line-height: 1.85; -webkit-font-smoothing: antialiased; }
a { color: var(--brand-deep); }
img { max-width: 100%; height: auto; display: block; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 28px; }
.sec { padding: 56px 28px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 24px; border-radius: 999px; font-weight: 700; font-size: 15px; text-decoration: none; transition: background .2s, transform .2s; }
.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 10px 24px rgba(154,90,112,.25); }
.btn-primary:hover { background: var(--brand-dark); transform: translateY(-1px); }
.btn-ghost { background: #fff; color: var(--ink); border: 1px solid var(--line); }

/* ヘッダー */
.site-header { position: sticky; top: 0; z-index: 10; background: rgba(249,245,246,.88); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid var(--line); }
.nav { display: flex; align-items: center; justify-content: space-between; padding-top: 12px; padding-bottom: 12px; gap: 16px; }
.logo { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; font-size: 17px; }
.logo-img { height: 40px; width: auto; display: block; }
.logo small { font-size: 12px; font-weight: 500; color: var(--muted); margin-left: 6px; }
.logo-mark { width: 32px; height: 32px; border-radius: 9px; object-fit: cover; flex-shrink: 0; }
.nav-links { display: flex; align-items: center; gap: 22px; font-size: 14px; }
.nav-links a:not(.btn) { color: var(--muted); text-decoration: none; }
.nav-links a:not(.btn):hover { color: var(--ink); }
.nav-links .btn { padding: 9px 18px; font-size: 14px; }

/* トップ */
.hero { padding: 72px 0 40px; background: radial-gradient(800px 320px at 85% 0%, var(--brand-soft2), transparent 70%); }
.eyebrow { color: var(--brand-deep); font-weight: 700; font-size: 14px; margin: 0 0 12px; }
.hero h1 { font-size: 40px; line-height: 1.45; margin: 0 0 16px; }
.hero .lead { color: var(--muted); font-size: 16px; margin: 0 0 28px; }
.cat-chips { display: flex; flex-wrap: wrap; gap: 10px; }
.cat-chip { padding: 8px 16px; border-radius: 999px; background: #fff; border: 1px solid var(--line); color: var(--ink); text-decoration: none; font-size: 14px; font-weight: 500; }
.cat-chip::before { content: ""; display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--c); margin-right: 8px; vertical-align: 1px; }
.sec-title, .page-title { font-size: 26px; margin: 0 0 24px; }
.more { text-align: center; margin-top: 32px; }
.empty { padding: 40px 24px; text-align: center; color: var(--muted); background: #fff; border: 1px dashed var(--line); border-radius: 18px; }

/* カード */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 22px; }
.card { display: flex; flex-direction: column; background: var(--panel); border: 1px solid var(--line); border-radius: 18px; overflow: hidden; color: var(--ink); text-decoration: none; transition: transform .2s, box-shadow .2s; }
.card:hover { transform: translateY(-2px); box-shadow: 0 14px 32px rgba(60,40,30,.08); }
.card[hidden] { display: none; }
.card-thumb { aspect-ratio: 1200 / 630; background: var(--brand-soft); }
.card-thumb img { width: 100%; height: 100%; object-fit: cover; }
.thumb-fallback { width: 100%; height: 100%; display: flex; align-items: flex-end; padding: 16px 18px; background: linear-gradient(135deg, color-mix(in srgb, var(--c) 18%, #fff), color-mix(in srgb, var(--c) 6%, #fff)); }
.thumb-fallback span { font-weight: 700; color: var(--c); font-size: 14px; }
.card-body { padding: 18px 20px 20px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card-body h3 { font-size: 17px; line-height: 1.6; margin: 0; }
.card-body p { font-size: 13.5px; color: var(--muted); margin: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.card-body time { font-size: 12.5px; color: #A89E97; margin-top: auto; }
.badge { align-self: flex-start; display: inline-block; padding: 3px 12px; border-radius: 999px; font-size: 12px; font-weight: 700; color: var(--c); background: color-mix(in srgb, var(--c) 12%, #fff); }

/* 一覧 */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.filter { font-family: inherit; font-size: 14px; padding: 7px 16px; border-radius: 999px; border: 1px solid var(--line); background: #fff; color: var(--ink); cursor: pointer; }
.filter.on { background: var(--ink); color: #fff; border-color: var(--ink); }
.search { width: 100%; max-width: 420px; padding: 12px 16px; border-radius: 12px; border: 1px solid var(--line); background: #fff; font-size: 15px; font-family: inherit; margin-bottom: 28px; }
.search:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 4px rgba(154,90,112,.12); }

/* パンくず */
.crumb { font-size: 13px; color: var(--muted); margin: 0 0 20px; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.crumb a { color: var(--muted); }
.crumb i { font-style: normal; color: #CBBFC5; }
.crumb span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 100%; }

/* 記事 */
.article-wrap { max-width: 800px; padding-top: 32px; padding-bottom: 64px; }
.article h1 { font-size: 30px; line-height: 1.55; margin: 14px 0 10px; }
.meta { font-size: 13px; color: var(--muted); margin: 0 0 24px; }
.meta a { color: var(--muted); }
.hero-img { border-radius: 18px; margin: 0 0 28px; aspect-ratio: 1200 / 630; object-fit: cover; width: 100%; }
.lead-box { background: var(--brand-soft); border: 1px solid var(--brand-soft2); border-radius: 16px; padding: 20px 24px; margin-bottom: 28px; }
.lead-box p:first-child { margin-top: 0; }
.lead-box p:last-child { margin-bottom: 0; }
.toc { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 18px 24px; margin-bottom: 40px; }
.toc p { font-weight: 700; margin: 0 0 6px; }
.toc ol { margin: 0; padding-left: 1.4em; }
.toc a { color: var(--ink); text-decoration: none; }
.toc a:hover { color: var(--brand-deep); }
.body h2 { font-size: 23px; line-height: 1.55; margin: 48px 0 16px; padding-left: 14px; border-left: 4px solid var(--brand); }
.body h3 { font-size: 18px; margin: 28px 0 10px; }
.body p, .body li { font-size: 16px; }
.body ul, .body ol { padding-left: 1.4em; }
.body li { margin-bottom: 6px; }
.note { background: #FAF1F4; border: 1px solid #EBD5DD; border-radius: 14px; padding: 14px 18px; font-size: 14.5px; margin: 18px 0; }
.table-wrap { overflow-x: auto; margin: 18px 0; }
table { border-collapse: collapse; width: 100%; background: #fff; font-size: 14.5px; }
th, td { border: 1px solid var(--line); padding: 10px 14px; text-align: left; vertical-align: top; }
th { background: var(--brand-soft); white-space: nowrap; }
details { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 14px 18px; margin-bottom: 10px; }
summary { font-weight: 700; cursor: pointer; }
details > div { margin-top: 10px; font-size: 15px; }
.related { margin-top: 56px; }
.related h2 { font-size: 21px; }

/* CTA */
.cta-box { margin-top: 48px; padding: 36px 32px; border-radius: 24px; text-align: center; background: linear-gradient(180deg, var(--brand-soft), #fff); border: 1.5px solid var(--brand-soft2); }
.cta-kicker { color: var(--brand-deep); font-size: 13px; font-weight: 700; margin: 0 0 6px; }
.cta-box h2 { font-size: 22px; margin: 0 0 8px; border: 0; padding: 0; }
.cta-box p { color: var(--muted); font-size: 14.5px; margin: 0 0 20px; }

/* 運営者情報など */
.doc { max-width: 800px; }
.doc h2 { font-size: 20px; margin: 36px 0 12px; }
.doc li { margin-bottom: 8px; }

/* フッター */
.site-footer { border-top: 1px solid var(--line); padding: 40px 0 28px; background: #fff; }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; }
.foot-desc { font-size: 13px; color: var(--muted); margin: 12px 0 0; }
.foot-links { display: flex; flex-direction: column; gap: 8px; font-size: 13.5px; }
.foot-links b { font-size: 13px; }
.foot-links a { color: var(--muted); text-decoration: none; }
.foot-links a:hover { color: var(--ink); }
.copy { font-size: 12px; color: #B3A6AE; margin: 28px 0 0; text-align: center; }

@media (max-width: 768px) {
  .wrap, .sec { padding-left: 16px; padding-right: 16px; }
  .sec { padding-top: 40px; padding-bottom: 40px; }
  .nav-links a:not(.btn) { display: none; }
  .logo small { display: none; }
  .hero { padding: 48px 0 24px; }
  .hero h1 { font-size: 27px; }
  .hero .lead br { display: none; }
  .cards { grid-template-columns: 1fr; }
  .article h1 { font-size: 24px; }
  .body h2 { font-size: 20px; }
  .cta-box { padding: 28px 20px; }
  .foot-grid { grid-template-columns: 1fr; gap: 24px; }
}

/* 運営者情報・FAQ */
.intro { color: var(--muted); }
.editor-card { display: flex; gap: 16px; align-items: flex-start; background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 22px 24px; margin: 20px 0 8px; }
.editor-card .logo-mark { width: 48px; height: 48px; border-radius: 14px; }
.editor-card p { margin: 6px 0 0; font-size: 14.5px; color: var(--muted); }
.policy { padding-left: 1.4em; }
.policy li { margin-bottom: 14px; }
.policy b { display: block; }
.policy span { color: var(--muted); font-size: 15px; }
.filter small { margin-left: 6px; opacity: .6; font-size: 12px; }
.faq-group h2 { font-size: 19px; }
.faq-group[hidden], details[hidden] { display: none; }