/* ---------- blog: static (non-transparent) header override ---------- */
.site-header.is-static {
  position: static;
  padding: 20px 6vw;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  backdrop-filter: none;
}
.site-header.is-static .header-logo,
.site-header.is-static .header-nav a {
  color: var(--navy);
}
.site-header.is-static .header-logo svg { color: var(--bronze); }

/* ---------- blog hero ---------- */
.blog-hero {
  background: var(--navy);
  color: var(--paper);
  padding: 80px 6vw 64px;
}
.blog-hero .section-inner { padding: 0; max-width: 720px; }
.blog-hero .section-label { color: var(--bronze-light); }
.blog-hero .section-title { margin-bottom: 20px; }
.blog-hero-lead {
  color: rgba(240, 239, 233, 0.78);
  font-size: 1rem;
  line-height: 2;
}

/* ---------- blog list ---------- */
/* 記事カード（.blog-grid / .blog-card 系）はトップページでも使うため style.css に置いている */
.blog-list { background: var(--paper); }
.blog-list .section-inner { padding: 72px 6vw 140px; }

/* ---------- blog post (article) ---------- */
.post-header {
  background: var(--navy);
  color: var(--paper);
  padding: 72px 6vw 56px;
}
.post-header .section-inner { padding: 0; max-width: 760px; }
.post-date {
  font-family: var(--font-head);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--bronze-light);
  margin-bottom: 18px;
}
.post-title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.2vw, 2.1rem);
  line-height: 1.6;
}
.post-body-wrap { background: var(--paper); }
.post-body-wrap .section-inner {
  max-width: 760px;
  padding: 64px 6vw 100px;
}
.post-body h2 {
  font-family: var(--font-head);
  font-size: 1.35rem;
  font-weight: 700;
  margin: 52px 0 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--bronze-light);
}
.post-body h2:first-child { margin-top: 0; }
.post-body p {
  font-size: 1rem;
  line-height: 2;
  color: var(--ink-soft);
  margin-bottom: 24px;
}
.post-body ul, .post-body ol {
  margin: 0 0 24px 1.4em;
  color: var(--ink-soft);
  line-height: 2;
}
.post-body li { margin-bottom: 8px; }
.post-body strong { color: var(--ink); }
.post-body table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 28px;
  font-size: 0.92rem;
}
.post-body th, .post-body td {
  border: 1px solid var(--line);
  padding: 10px 14px;
  text-align: left;
}
.post-body th {
  background: var(--paper-dim);
  font-family: var(--font-head);
  font-weight: 700;
}
.post-cta {
  margin-top: 56px;
  padding: 40px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  text-align: center;
}
.post-cta p {
  color: var(--ink-soft);
  margin-bottom: 24px;
}
.post-back {
  display: inline-block;
  margin-top: 40px;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}
.post-back:hover { color: var(--bronze); border-color: var(--bronze); }