/* 静的記事ページ用スタイル（LP と同じデザインの部分集合）。/article.css として配信。 */
:root {
  --ink: #14213d;
  --ink-soft: #33415c;
  --paper: #ffffff;
  --paper-muted: #f4f6fb;
  --border: #e2e7f0;
  --accent: #e07a2f;
  --accent-ink: #a65418;
  --brand-deep: #14213d;
  --radius: 16px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Kaku Gothic ProN',
    'Hiragino Sans', Meiryo, sans-serif;
  color: var(--ink);
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); }
a { color: var(--accent-ink); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  white-space: nowrap;
}
.btn--primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 20px -8px rgba(224, 122, 47, 0.7);
}
.brand { font-weight: 800; color: var(--brand-deep); text-decoration: none; letter-spacing: 0.02em; }

/* header */
.ah {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.ah__in {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px;
  height: 62px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.ah .btn { padding: 8px 16px; font-size: 0.86rem; }

/* article body */
.awrap { max-width: 760px; margin: 0 auto; padding: 48px 24px 72px; }
.article h1 {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  line-height: 1.45;
  color: var(--brand-deep);
  margin: 0 0 28px;
}
.article h2 {
  font-size: 1.4rem;
  color: var(--brand-deep);
  margin: 44px 0 14px;
  padding-left: 14px;
  border-left: 4px solid var(--accent);
}
.article h3 { font-size: 1.12rem; color: var(--brand-deep); margin: 30px 0 10px; }
.article p { margin: 0 0 18px; }
.article ul, .article ol { margin: 0 0 18px; padding-left: 1.4em; }
.article li { margin: 6px 0; }
.article strong { color: var(--brand-deep); }
.article hr { border: none; border-top: 1px solid var(--border); margin: 40px 0; }

/* CTA box */
.acta {
  background: var(--paper-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 26px;
  text-align: center;
  margin: 48px 0 0;
}
.acta__lead { font-weight: 800; color: var(--brand-deep); font-size: 1.1rem; margin: 0 0 8px; }
.acta__sub { color: var(--ink-soft); font-size: 0.92rem; margin: 0 0 18px; }
.acta__soon { color: var(--ink-soft); font-size: 0.82rem; margin: 16px 0 0; }

/* related */
.arel { margin: 56px 0 0; }
.arel__title { font-size: 1.2rem; color: var(--brand-deep); margin: 0 0 14px; }
.arel__list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.arel__list li {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
}
.arel__list a { font-weight: 700; text-decoration: none; }
.arel__list a:hover { text-decoration: underline; }
.aback { margin: 40px 0 0; font-size: 0.92rem; }

/* list page */
.alist__title { font-size: clamp(1.6rem, 4vw, 2.1rem); color: var(--brand-deep); margin: 0 0 10px; }
.alist__lead { color: var(--ink-soft); margin: 0 0 32px; }
.alist__items { list-style: none; padding: 0; margin: 0; display: grid; gap: 18px; }
.alist__item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.alist__item a { display: block; text-decoration: none; }
.alist__thumb { display: block; width: 100%; aspect-ratio: 2 / 1; object-fit: cover; background: var(--paper-muted); }
.alist__body { padding: 20px 24px 22px; }
.alist__item h2 { margin: 0 0 8px; font-size: 1.2rem; color: var(--brand-deep); }
.alist__item p { margin: 0; color: var(--ink-soft); font-size: 0.94rem; }

/* article page hero image */
.article-hero-img {
  display: block;
  width: 100%;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: 8px;
}

/* footer */
.af { background: var(--brand-deep); color: #cdd7e6; padding: 40px 0 28px; }
.af__in {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.af .brand { color: #fff; }
.af__nav { display: flex; gap: 18px; flex-wrap: wrap; }
.af__nav a { color: #cdd7e6; text-decoration: none; font-size: 0.9rem; font-weight: 600; }
.af__nav a:hover { color: #fff; }
.af__legal {
  max-width: 760px;
  margin: 24px auto 0;
  padding: 16px 24px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.78rem;
  color: #8194ad;
}

@media (max-width: 600px) {
  .awrap { padding: 36px 20px 56px; }
}