/* Navi-Labo ブログ共通スタイル（本体デザイン準拠：ダーク×ゴールド） */
:root {
  --dark: #151210; --nav: #1c1916;
  --gold: #b09060; --gold-lt: #cdb07e; --gold-dk: #8a6e42; --gold-dim: rgba(176,144,96,.22);
  --light: #f0efed; --light2: #e8e6e2; --cream: #faf9f7;
  --ink: #1a1814; --sub: #6b6560; --sub2: rgba(26,24,20,.45); --white: #fff;
  --serif: 'Cormorant Garamond', Georgia, serif;
  --sans: 'Noto Sans JP', sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { background: var(--cream); color: var(--ink); font-family: var(--sans); font-weight: 400; line-height: 1.9; }

/* ナビ */
nav { position: sticky; top: 0; z-index: 50; background: var(--nav); display: flex; align-items: center; justify-content: space-between; padding: 8px 28px; }
.nav-logo { color: var(--white); text-decoration: none; font-family: var(--serif); font-size: 22px; letter-spacing: 1px; display: inline-flex; align-items: center; }
.nav-logo-img { height: 52px; width: auto; display: block; }
@media (max-width: 600px) { .nav-logo-img { height: 40px; } }
.nav-logo em { font-style: normal; font-size: 12px; color: var(--gold-lt); font-family: var(--sans); }
.nav-links { list-style: none; display: flex; gap: 26px; align-items: center; }
.nav-links a { color: rgba(255,255,255,.82); text-decoration: none; font-size: 13px; letter-spacing: 1px; }
.nav-links a:hover { color: var(--gold-lt); }
.nav-cta { border: 1px solid var(--gold); color: var(--gold-lt) !important; padding: 8px 18px; }
@media (max-width: 760px) { .nav-links { display: none; } }

/* ヘッダー帯 */
.blog-head { background: var(--dark); color: var(--white); text-align: center; padding: 64px 24px 56px; }
.blog-head .en { color: var(--gold); font-family: var(--serif); font-style: italic; letter-spacing: 3px; font-size: 15px; }
.blog-head h1 { font-size: 30px; font-weight: 500; letter-spacing: 4px; margin-top: 10px; }
.blog-head p { color: rgba(255,255,255,.66); font-size: 13px; margin-top: 12px; letter-spacing: 1px; }

/* 一覧 */
.wrap { max-width: 880px; margin: 0 auto; padding: 44px 24px 80px; }

/* カテゴリーフィルタ */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 26px; }
.filter-btn {
  background: transparent; border: 1px solid var(--light2); color: var(--sub);
  font-family: var(--sans); font-size: 13px; letter-spacing: 1px;
  padding: 9px 20px; cursor: pointer; transition: .2s;
}
.filter-btn:hover { border-color: var(--gold); color: var(--gold-dk); }
.filter-btn.active { background: var(--dark); border-color: var(--dark); color: var(--gold-lt); }
.post-card { display: block; background: var(--white); border: 1px solid var(--light2); text-decoration: none; color: var(--ink); padding: 28px 32px; margin-bottom: 18px; transition: .25s; }
.post-card:hover { border-color: var(--gold); transform: translateY(-2px); box-shadow: 0 12px 28px rgba(26,24,20,.08); }
.post-card .date { color: var(--gold-dk); font-family: var(--serif); letter-spacing: 2px; font-size: 14px; }
.post-card h2 { font-size: 20px; font-weight: 500; margin: 6px 0 8px; line-height: 1.6; }
.post-card p { color: var(--sub); font-size: 14px; }
.post-card .more { color: var(--gold-dk); font-size: 13px; letter-spacing: 2px; }

/* 記事本文 */
article { max-width: 760px; margin: 0 auto; padding: 56px 24px 40px; }
article .meta { color: var(--gold-dk); font-family: var(--serif); letter-spacing: 2px; font-size: 15px; }
article h1 { font-size: 28px; font-weight: 500; line-height: 1.6; margin: 10px 0 8px; }
article .lead { color: var(--sub); font-size: 15px; border-left: 3px solid var(--gold); padding-left: 16px; margin: 22px 0 36px; }
article h2 { font-size: 21px; font-weight: 500; margin: 48px 0 16px; padding-bottom: 10px; border-bottom: 1px solid var(--light2); }
article h2 .num { color: var(--gold); font-family: var(--serif); font-style: italic; margin-right: 10px; font-size: 24px; }
article h3 { font-size: 16px; margin: 28px 0 10px; color: var(--gold-dk); }
article p { margin-bottom: 18px; font-size: 15px; }
article ul, article ol { margin: 0 0 18px 1.4em; font-size: 15px; }
article li { margin-bottom: 6px; }
article table { width: 100%; border-collapse: collapse; margin: 0 0 22px; font-size: 14px; }
article th, article td { border: 1px solid var(--light2); padding: 9px 12px; text-align: left; }
article th { background: var(--light); font-weight: 500; white-space: nowrap; }
.point { background: var(--white); border: 1px solid var(--gold-dim); padding: 16px 20px; margin: 0 0 22px; font-size: 14px; }
.point b { color: var(--gold-dk); }

/* 関連在庫 */
#relatedStock { max-width: 760px; margin: 56px auto 0; padding: 0 24px; }
#relatedStock:empty { display: none; }
.rel-h { font-size: 19px; font-weight: 500; margin-bottom: 4px; }
.rel-lead { color: var(--sub); font-size: 13px; margin-bottom: 18px; }
.rel-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.rel-card { display: block; border: 1px solid var(--light2); text-decoration: none; color: var(--ink); background: #fff; transition: .25s; }
.rel-card:hover { border-color: var(--gold); transform: translateY(-2px); box-shadow: 0 12px 28px rgba(26,24,20,.08); }
.rel-thumb { aspect-ratio: 4 / 3; background: #eef4fb; overflow: hidden; }
.rel-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.rel-info { padding: 11px 13px 14px; }
.rel-title { font-size: 12.5px; line-height: 1.6; height: 4em; overflow: hidden; }
.rel-price { font-size: 13px; color: var(--gold-dk); margin-top: 8px; }
.rel-price b { font-size: 16px; }
.rel-ship { display: block; font-size: 11px; color: var(--sub); margin-top: 2px; }
.rel-more { text-align: center; margin-top: 18px; }
.rel-more a { color: var(--gold-dk); font-size: 13px; letter-spacing: 1px; text-decoration: none; }
@media (max-width: 680px) { .rel-grid { grid-template-columns: 1fr 1fr; } }

/* CTA */
.cta { background: var(--dark); color: var(--white); text-align: center; padding: 44px 24px; margin-top: 56px; }
.cta p { color: rgba(255,255,255,.75); font-size: 14px; margin-bottom: 18px; }
.cta .btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn-gold { display: inline-block; background: var(--gold); color: var(--dark); text-decoration: none; padding: 13px 30px; font-size: 14px; letter-spacing: 2px; }
.btn-line { display: inline-block; border: 1px solid var(--gold); color: var(--gold-lt); text-decoration: none; padding: 13px 30px; font-size: 14px; letter-spacing: 2px; }

/* フッター */
footer { background: var(--nav); color: rgba(255,255,255,.6); text-align: center; padding: 34px 24px; font-size: 12px; }
footer a { color: var(--gold-lt); text-decoration: none; }
.crumbs { max-width: 760px; margin: 0 auto; padding: 18px 24px 0; font-size: 12px; color: var(--sub2); }
.crumbs a { color: var(--gold-dk); text-decoration: none; }

/* 記事ヘッダー画像 */
.post-hero{display:block;width:100%;max-width:760px;margin:0 auto 12px;border-radius:6px;aspect-ratio:16/9;object-fit:cover;border:1px solid var(--light2);}

/* 一覧カード サムネ */
.post-card{display:flex;gap:22px;align-items:center;}
.card-thumb{width:220px;aspect-ratio:16/9;object-fit:cover;border-radius:4px;flex-shrink:0;}
.card-body{min-width:0;}
@media(max-width:600px){.post-card{flex-direction:column;align-items:stretch;}.card-thumb{width:100%;}}