:root {
  --navy: #001838;
  --navy2: #0A2F5C;
  --gold: #C9A227;
  --gold-soft: #E8C96A;
  --bg: #F4F6FA;
  --surface: #ffffff;
  --text: #1a1a1a;
  --muted: #5b6472;
  --line: #e5e9f0;
  --max: 980px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 19px; }
body {
  margin: 0;
  font-family: 'Hiragino Sans', 'Noto Sans JP', 'Yu Gothic', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.95;
  font-size: 1.1rem;
  -webkit-font-smoothing: antialiased;
}
@media (max-width: 480px) {
  html { font-size: 18px; }
}
@media (min-width: 900px) {
  :root { --max: 1080px; }
}
a { color: var(--navy2); }
a:hover { color: var(--gold); }
img, svg { max-width: 100%; height: auto; display: block; }

.site-header {
  background: var(--navy);
  padding: 16px 20px;
  position: sticky;
  top: 0;
  z-index: 20;
}
.site-header a {
  color: var(--gold);
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0.04em;
  font-size: 1.05rem;
}
.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 18px 72px;
}
.bc {
  font-size: 0.9rem;
  color: var(--muted);
  padding: 18px 0 8px;
}
.bc a { color: var(--muted); text-decoration: none; }
.bc a:hover { color: var(--navy); }

.hero-card {
  background: var(--surface);
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 10px 30px rgba(0, 24, 56, 0.06);
  margin-bottom: 28px;
}
.hero-card img.hero {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #dfe6f0;
}
.hero-body { padding: 24px 24px 28px; }
.badge {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--navy);
  background: rgba(201, 162, 39, 0.18);
  border: 1px solid rgba(201, 162, 39, 0.45);
  border-radius: 999px;
  padding: 5px 14px;
  margin-bottom: 12px;
}
.meta {
  color: var(--muted);
  font-size: 0.92rem;
  margin: 0 0 14px;
}
h1 {
  font-size: clamp(1.55rem, 2.4vw, 1.85rem);
  line-height: 1.4;
  margin: 0 0 14px;
  color: var(--navy);
  font-weight: 900;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
@media (min-width: 900px) {
  h1 {
    font-size: 1.75rem;
    white-space: nowrap;
  }
}
@media (min-width: 900px) and (max-width: 1100px) {
  h1 { font-size: 1.55rem; }
}
.lead {
  font-size: 1.18rem;
  color: #2b3440;
  margin: 0;
  line-height: 1.9;
}

.article {
  background: var(--surface);
  border-radius: 18px;
  border: 1px solid var(--line);
  padding: 32px 24px 40px;
}
.article h2 {
  font-size: 1.4rem;
  color: var(--navy);
  margin: 2.3rem 0 0.9rem;
  padding-left: 12px;
  border-left: 4px solid var(--gold);
  line-height: 1.45;
}
.article h3 {
  font-size: 1.15rem;
  margin: 1.6rem 0 0.6rem;
  color: var(--navy2);
  line-height: 1.5;
}
.article p { margin: 0.85rem 0; font-size: 1.12rem; }
.article ul, .article ol { padding-left: 1.35rem; margin: 0.7rem 0 1.1rem; }
.article li { margin: 0.45rem 0; font-size: 1.12rem; }

.figure {
  margin: 1.4rem 0 1.6rem;
  background: var(--bg);
  border-radius: 14px;
  border: 1px solid var(--line);
  overflow: hidden;
}
.figure figcaption {
  font-size: 0.9rem;
  color: var(--muted);
  padding: 12px 16px 14px;
  line-height: 1.7;
}

.callout {
  background: linear-gradient(135deg, rgba(0,24,56,0.04), rgba(201,162,39,0.10));
  border: 1px solid rgba(201,162,39,0.35);
  border-radius: 14px;
  padding: 18px 20px;
  margin: 1.3rem 0;
  font-size: 1.05rem;
}
.callout strong { color: var(--navy); }

.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 1rem 0;
}
@media (min-width: 680px) {
  .grid-2 { grid-template-columns: 1fr 1fr; }
}
.card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px 18px;
}
.card h3 { margin-top: 0; }
.card p, .card li { font-size: 1.02rem; }
.card .tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--gold);
  background: var(--navy);
  border-radius: 6px;
  padding: 3px 9px;
  margin-bottom: 8px;
}

.axis-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 1rem;
  margin: 1rem 0 1.4rem;
}
.axis-table th, .axis-table td {
  border: 1px solid var(--line);
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  line-height: 1.7;
}
.axis-table th {
  background: var(--navy);
  color: #fff;
  font-weight: 700;
}
.axis-table tr:nth-child(even) td { background: #f8fafc; }

.toc {
  background: #f8fafc;
  border: 1px dashed var(--line);
  border-radius: 12px;
  padding: 16px 18px;
  margin: 0 0 1.5rem;
  font-size: 1.02rem;
}
.toc strong { display: block; margin-bottom: 8px; color: var(--navy); font-size: 1.05rem; }
.toc ol { margin: 0; padding-left: 1.3rem; }
.toc li { margin: 0.4rem 0; }
.toc a { text-decoration: none; }

.cta-box {
  margin: 2rem 0 0.5rem;
  text-align: center;
  padding: 24px 18px;
  border-radius: 16px;
  background: var(--navy);
  color: #fff;
}
.cta-box p { margin: 0 0 14px; color: rgba(255,255,255,0.88); font-size: 1.05rem; }
.cta {
  display: inline-block;
  background: linear-gradient(135deg, var(--gold-soft), var(--gold));
  color: var(--navy) !important;
  font-weight: 900;
  text-decoration: none;
  padding: 15px 26px;
  border-radius: 12px;
  font-size: 1.05rem;
}
.pager {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
  font-size: 1rem;
}
.site-footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.88rem;
  padding: 8px 16px 40px;
}