/* =========================================================
   東和盛泰株式会社 ブログ用スタイル
   トップページ(index.html)と同じデザイントークン・ヘッダー・
   フッターを使用し、見た目を完全に統一しています。
   ========================================================= */
:root{
  --navy:#5a4452;
  --navy-deep:#3a2a34;
  --copper:#b89484;
  --coral:#d9a89a;
  --gold:#d4b89a;
  --rose:#d4b0b8;
  --teal:#b8c0a8;
  --plum:#a08894;
  --bg:#fcf8f2;
  --bg-warm:#fef9f4;
  --ink:#3a2e34;
  --ink-soft:#6a5a62;
  --line:#e8dcd4;
  --line-soft:#f0e6df;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Noto Sans JP',-apple-system,BlinkMacSystemFont,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.7;
  font-size:15px;
  -webkit-font-smoothing:antialiased;
}
.en{font-family:'Cormorant Garamond','Noto Serif JP',serif;letter-spacing:.18em;font-weight:500}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

/* ---------- Header（トップページと共通） ---------- */
header{
  position:sticky;top:0;z-index:50;
  background:rgba(247,244,239,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-soft);
}
.header-inner{
  max-width:1200px;margin:0 auto;
  padding:14px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:flex;align-items:center;gap:14px}
.brand-mark{
  width:46px;height:46px;border-radius:50%;
  background:linear-gradient(135deg,var(--navy) 0%,var(--copper) 100%);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-family:'Noto Serif JP',serif;font-size:24px;font-weight:700;
  box-shadow:0 4px 12px rgba(74,46,58,.2);
}
.brand-name{font-family:'Noto Serif JP',serif;font-size:1.25rem;font-weight:700;color:var(--navy);line-height:1.2}
.brand-en{font-family:'Cormorant Garamond',serif;font-size:.72rem;letter-spacing:.2em;color:var(--copper);margin-top:2px}
.nav{display:flex;gap:28px;font-size:.85rem}
.nav a{color:var(--ink-soft);transition:color .2s}
.nav a:hover,.nav a.is-current{color:var(--copper)}
.header-cta{
  background:var(--navy);color:#fff;
  padding:10px 22px;border-radius:2px;font-size:.82rem;letter-spacing:.05em;
  transition:background .2s;
}
.header-cta:hover{background:var(--copper)}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;padding:9px;background:none;border:none;cursor:pointer;flex-shrink:0}
.nav-toggle span{display:block;width:100%;height:2px;border-radius:2px;background:var(--navy);transition:transform .25s,opacity .25s}
header.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
header.nav-open .nav-toggle span:nth-child(2){opacity:0}
header.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Footer（トップページと共通） ---------- */
footer{
  background:var(--navy-deep);color:rgba(255,255,255,.7);
  padding:48px 24px 24px;margin-top:80px;
}
.footer-inner{max-width:1100px;margin:0 auto;display:flex;flex-direction:column;gap:24px}
.footer-brand{display:flex;align-items:center;gap:14px}
.footer-brand .brand-mark{background:linear-gradient(135deg, #fff 0%, var(--gold) 100%);color:var(--navy)}
.footer-brand .brand-name{color:#fff}
.footer-brand .brand-en{color:var(--gold)}
.footer-top{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:24px}
.footer-nav{display:flex;flex-wrap:wrap;gap:12px 22px;font-size:.85rem}
.footer-nav a{color:rgba(255,255,255,.75);transition:color .2s}
.footer-nav a:hover{color:var(--gold)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding-top:20px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px;
  font-size:.78rem;
}

/* ---------- ブログ見出し ---------- */
.blog-head{
  padding:64px 24px 48px;
  background:
    radial-gradient(45% 55% at 90% 10%, rgba(212,176,184,.30), transparent 65%),
    radial-gradient(45% 55% at 8% 90%, rgba(184,192,168,.26), transparent 65%),
    var(--bg-warm);
  border-bottom:1px solid var(--line-soft);
}
.blog-head-inner{max-width:1100px;margin:0 auto}
.blog-kicker{display:block;font-size:.78rem;color:var(--copper);margin-bottom:10px}
.blog-head h1{font-family:'Noto Serif JP',serif;font-size:2rem;color:var(--navy);font-weight:700}
.blog-head p{color:var(--ink-soft);margin-top:12px;max-width:620px}

/* ---------- 記事一覧 ---------- */
.blog-wrap{max-width:1100px;margin:0 auto;padding:48px 24px}
.blog-empty{text-align:center;color:var(--ink-soft);padding:40px 0}
.post-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(300px,1fr));
  gap:28px;
}
.post-card{
  background:#fff;border:1px solid var(--line-soft);border-radius:6px;
  overflow:hidden;transition:transform .2s, box-shadow .2s;
}
.post-card:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(74,46,58,.12)}
.post-card-thumb{aspect-ratio:3/2;overflow:hidden;background:var(--line-soft)}
.post-card-thumb img{width:100%;height:100%;object-fit:cover}
.post-card-thumb--placeholder{
  width:100%;height:100%;
  background:linear-gradient(135deg,var(--navy) 0%,var(--copper) 100%);
  display:flex;align-items:center;justify-content:center;
}
.post-card-thumb--placeholder span{
  font-family:'Noto Serif JP',serif;font-size:3rem;color:rgba(255,255,255,.85);
}
.post-card-body{padding:20px 22px 24px}
.post-cat{
  display:inline-block;font-size:.7rem;letter-spacing:.08em;
  color:var(--copper);border:1px solid var(--copper);
  padding:3px 10px;border-radius:2px;margin-bottom:10px;
}
.post-card-body time{display:block;font-size:.74rem;color:var(--ink-soft);margin-bottom:6px}
.post-card-body h2{
  font-family:'Noto Serif JP',serif;font-size:1.12rem;color:var(--navy);
  line-height:1.5;margin-bottom:10px;
}
.post-card-body p{font-size:.86rem;color:var(--ink-soft);line-height:1.7}

/* ---------- 記事本文 ---------- */
.article-wrap{max-width:760px;margin:0 auto;padding:48px 24px}
.breadcrumb{font-size:.76rem;color:var(--ink-soft);margin-bottom:28px}
.breadcrumb a{color:var(--copper)}
.breadcrumb span{margin:0 6px;color:var(--line)}
.article-head{margin-bottom:28px;border-bottom:1px solid var(--line-soft);padding-bottom:24px}
.article-head time{display:block;font-size:.78rem;color:var(--ink-soft);margin:12px 0 8px}
.article-head h1{font-family:'Noto Serif JP',serif;font-size:1.8rem;color:var(--navy);line-height:1.45}
.article-eyecatch{width:100%;border-radius:6px;margin-bottom:32px}

.article-body{font-size:1rem;line-height:1.95;color:var(--ink)}
.article-body h2{
  font-family:'Noto Serif JP',serif;font-size:1.4rem;color:var(--navy);
  margin:40px 0 16px;padding-left:14px;border-left:4px solid var(--copper);
}
.article-body h3{font-family:'Noto Serif JP',serif;font-size:1.15rem;color:var(--navy);margin:30px 0 12px}
.article-body p{margin:0 0 20px}
.article-body ul,.article-body ol{margin:0 0 20px 1.4em}
.article-body li{margin-bottom:8px}
.article-body a{color:var(--copper);text-decoration:underline}
.article-body img{border-radius:6px;margin:24px 0}
.article-body blockquote{
  border-left:4px solid var(--line);padding:6px 0 6px 18px;
  margin:0 0 20px;color:var(--ink-soft);font-style:italic;
}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 20px;font-size:.92rem}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.article-body th{background:var(--bg-warm)}
.article-body code{
  background:var(--line-soft);padding:2px 6px;border-radius:3px;font-size:.9em;
}

.article-foot{margin-top:48px;padding-top:24px;border-top:1px solid var(--line-soft)}
.back-link{color:var(--copper);font-size:.9rem}
.back-link:hover{color:var(--navy)}

/* ---------- レスポンシブ ---------- */
@media (max-width:980px){
  .nav-toggle{display:flex}
  .nav{
    display:none;
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;flex-wrap:nowrap;align-items:stretch;justify-content:flex-start;gap:0;
    background:rgba(247,244,239,.98);backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line-soft);
    box-shadow:0 10px 24px rgba(74,46,58,.14);
    padding:6px 0;font-size:.95rem;
    max-height:calc(100vh - 70px);overflow-y:auto;
  }
  header.nav-open .nav{display:flex}
  .nav a{padding:13px 24px;border-bottom:1px solid var(--line-soft)}
  .nav a:last-child{border-bottom:none}
}
@media (max-width:640px){
  .header-inner{padding:12px 18px;gap:12px}
  .brand-mark{width:40px;height:40px;font-size:20px;flex-shrink:0}
  .brand-name{font-size:1.02rem}
  .brand-en{font-size:.62rem;letter-spacing:.18em}
  .header-cta{padding:9px 14px;font-size:.72rem;flex-shrink:0}
  .blog-head{padding:48px 18px 36px}
  .blog-head h1{font-size:1.6rem}
  .blog-wrap{padding:36px 18px}
  .article-wrap{padding:36px 18px}
  .article-head h1{font-size:1.45rem}
  footer{padding:36px 18px 20px}
  .footer-top{flex-direction:column;align-items:flex-start;gap:18px}
  .footer-nav{width:100%;display:grid;grid-template-columns:repeat(2,1fr);gap:14px 16px}
  .footer-bottom{flex-direction:column;gap:8px;font-size:.72rem}
}