:root {
  --ink: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --bg: #f8fafc;
  --panel: #ffffff;
  --navy-dark: #123e74;
  --navy: #1a5bb0;
  --navy-light: #256ec7;
  --gold: #b47b2b;
  --gold-light: #fdf9f0;
  --accent: #1a5bb0;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-head {
  background: linear-gradient(140deg, #123e74 0%, #1a5bb0 50%, #2481db 100%);
  color: #fff;
  padding: 24px 20px 20px;
}
.site-head .wrap {
  max-width: 900px;
  margin: 0 auto;
}
.site-head .brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  letter-spacing: .08em;
}
.site-head .crumbs {
  margin: 12px 0 6px;
  font-size: 12px;
  color: #cbd5e1;
}
.site-head .crumbs a {
  color: #fff;
  text-decoration: underline;
}
.site-head .crumbs span {
  margin: 0 4px;
  opacity: .7;
}
.head-pr {
  margin: 6px 0 0;
  font-size: 11px;
  color: #cbd5e1;
}
.head-pr span {
  border: 1px solid rgba(203, 213, 225, .7);
  padding: 1px 4px;
  border-radius: 3px;
  font-size: 9px;
  font-weight: 800;
  margin-right: 4px;
}

.wrap.content {
  max-width: 900px;
  margin: 28px auto 60px;
  padding: 0 20px;
}
.article {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: clamp(24px, 4vw, 44px);
  box-shadow: 0 2px 10px rgba(15, 23, 42, .03);
}
.article h1 {
  font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: clamp(22px, 3.2vw, 30px);
  color: var(--navy-dark);
  margin: 0 0 16px;
  line-height: 1.4;
  border-bottom: 2px solid #e2e8f0;
  padding-bottom: 14px;
}
.article h2 {
  font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: 20px;
  color: var(--navy-dark);
  margin: 36px 0 14px;
  padding-left: 12px;
  border-left: 4px solid var(--gold);
}
.article h3 {
  font-size: 16px;
  color: var(--navy-dark);
  margin: 24px 0 10px;
}
.article p {
  font-size: 15px;
  margin: 0 0 16px;
  color: #334155;
  line-height: 1.85;
}
.article ul, .article ol {
  padding-left: 22px;
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.8;
  color: #334155;
}
.article li { margin-bottom: 6px; }
.article table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0 28px;
  font-size: 13.5px;
}
.article th, .article td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
}
.article th {
  background: #f1f5f9;
  color: var(--navy-dark);
  font-weight: 700;
  white-space: nowrap;
}
.info-box {
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px 20px;
  margin: 22px 0;
  font-size: 14px;
}
.info-box h4 {
  margin: 0 0 6px;
  color: var(--navy-dark);
  font-size: 14.5px;
}
.cta-box {
  background: linear-gradient(135deg, #123e74, #1a5bb0);
  color: #fff;
  border-radius: 10px;
  padding: 24px;
  text-align: center;
  margin: 36px 0 20px;
}
.cta-box h3 {
  color: #fff;
  margin: 0 0 10px;
  font-size: 19px;
  font-family: "Hiragino Mincho ProN", serif;
}
.cta-box p {
  color: #cbd5e1;
  font-size: 13.5px;
  margin: 0 0 18px;
}
.cta-box a {
  display: inline-block;
  background: #fff;
  color: var(--navy-dark);
  font-weight: 800;
  padding: 11px 26px;
  border-radius: 999px;
  text-decoration: none;
  font-size: 14px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, .2);
  transition: transform .15s ease;
}
.cta-box a:hover {
  transform: translateY(-2px);
  text-decoration: none;
}

footer {
  border-top: 1px solid var(--line);
  padding: 28px 20px 48px;
  text-align: center;
  font-size: 12px;
  color: var(--muted);
  background: #fff;
}
footer a { color: var(--muted); }
footer a:hover { color: var(--accent); }
.foot-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 12px;
}