:root {
  --bg: #f8f7f3;
  --surface: #ffffff;
  --text: #1d2430;
  --muted: #5d6675;
  --line: #e2e0d8;
  --navy: #1f3a5f;
  --accent: #e8590c;
  --accent-soft: #fff1e8;
  --amazon: #f0a400;
  --radius: 10px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.85;
  overflow-wrap: anywhere;
}
a { color: var(--navy); }
img { max-width: 100%; height: auto; }

.container { max-width: 760px; margin: 0 auto; padding: 0 16px; }

/* header / footer */
.site-header { background: var(--surface); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 60px; flex-wrap: wrap; }
.logo { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 1.1rem; color: var(--navy); text-decoration: none; }
.site-nav { display: flex; gap: 16px; font-size: .9rem; }
.site-nav a { color: var(--muted); text-decoration: none; }
.site-nav a:hover { color: var(--navy); }

.site-footer { margin-top: 64px; padding: 32px 0; background: var(--navy); color: #d7dfea; font-size: .85rem; }
.site-footer a { color: #fff; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 8px 20px; margin: 12px 0; }
.disclosure { margin: 0; }
.copyright { margin: 0; opacity: .7; }

/* top */
.hero { padding: 48px 0 24px; }
.hero-eyebrow { margin: 0; color: var(--accent); font-weight: 700; font-size: .9rem; }
.hero h1 { margin: 4px 0 12px; font-size: 2rem; line-height: 1.3; color: var(--navy); }
.hero-lead { margin: 0; color: var(--muted); }

.section { margin-top: 40px; }
.section-title { font-size: 1.15rem; margin: 0 0 16px; padding-left: 10px; border-left: 4px solid var(--accent); }
.policy ul { margin: 0; padding-left: 1.2em; color: var(--muted); }

.article-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.card a { display: block; padding: 16px 18px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); text-decoration: none; color: inherit; transition: border-color .15s; }
.card a:hover { border-color: var(--navy); }
.card-cat { display: inline-block; font-size: .75rem; font-weight: 700; color: var(--accent); }
.card-title { display: block; font-weight: 700; font-size: 1.05rem; line-height: 1.5; color: var(--navy); }
.card-desc { display: block; margin-top: 4px; font-size: .9rem; color: var(--muted); }
.card-date { display: block; margin-top: 6px; font-size: .8rem; color: var(--muted); }
.empty { color: var(--muted); }

/* article / page */
.article, .page { margin-top: 24px; padding: 28px 22px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.breadcrumb { font-size: .8rem; color: var(--muted); }
.breadcrumb a { color: var(--muted); }
.pr-note { margin: 12px 0 0; padding: 6px 10px; font-size: .8rem; color: var(--muted); background: var(--bg); border-radius: 6px; }
.article h1, .page h1 { margin: 12px 0 4px; font-size: 1.6rem; line-height: 1.45; color: var(--navy); }
.article-meta { margin: 0 0 24px; font-size: .8rem; color: var(--muted); }
.article-body h2, .page h2 { margin: 40px 0 12px; padding: 8px 12px; font-size: 1.25rem; line-height: 1.5; background: var(--accent-soft); border-left: 4px solid var(--accent); border-radius: 4px; }
.article-body h3 { margin: 28px 0 8px; font-size: 1.08rem; color: var(--navy); }
.article-body table, .info-table { width: 100%; border-collapse: collapse; font-size: .92rem; margin: 16px 0; }
.article-body th, .article-body td, .info-table th, .info-table td { padding: 8px 10px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.article-body th, .info-table th { background: var(--bg); white-space: nowrap; }
.table-wrap { overflow-x: auto; }

/* 記事内パーツ */
.summary { margin: 20px 0; padding: 16px 18px; border: 2px solid var(--navy); border-radius: var(--radius); }
.summary-title { margin: 0 0 6px; font-weight: 700; color: var(--navy); }
.summary ul { margin: 0; padding-left: 1.2em; }
.source { font-size: .8rem; color: var(--muted); }
.checklist { list-style: none; padding: 0; }
.checklist li { padding: 6px 0 6px 30px; position: relative; border-bottom: 1px dashed var(--line); }
.checklist li::before { content: ""; position: absolute; left: 4px; top: 12px; width: 14px; height: 14px; border: 2px solid var(--navy); border-radius: 3px; }

.product { margin: 20px 0; padding: 16px 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg); }
.product-name { margin: 0; font-weight: 700; }
.product-note { margin: 4px 0 0; font-size: .9rem; color: var(--muted); }
.btn-amazon { display: inline-block; margin-top: 10px; padding: 8px 22px; background: var(--amazon); color: #1d2430; font-weight: 700; font-size: .9rem; text-decoration: none; border-radius: 999px; }
.btn-amazon:hover { filter: brightness(.95); }
.btn-primary { display: inline-block; padding: 10px 24px; background: var(--navy); color: #fff; font-weight: 700; text-decoration: none; border-radius: 999px; }

@media (max-width: 480px) {
  .hero h1 { font-size: 1.6rem; }
  .article, .page { padding: 22px 16px; }
  .article h1, .page h1 { font-size: 1.35rem; }
}