:root {
  --navy: #1f2f54;
  --navy-2: #2c4270;
  --navy-hover: #334b7c;
  --base: #ffffff;
  --muted: #f4f7fb;
  --muted-blue: #eaf2f8;
  --line: #d8e1ec;
  --text: #233047;
  --subtext: #627087;
  --accent: #9bd7e8;
  --accent-strong: #61bfd7;
  --accent-soft: #e9f7fb;
  --shadow: 0 18px 45px rgba(31, 47, 84, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: var(--base);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", sans-serif;
  line-height: 1.75;
}
a { color: inherit; text-decoration: none; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 16px clamp(18px, 5vw, 72px);
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}
.logo { color: var(--navy); font-size: 1.45rem; font-weight: 900; letter-spacing: 0.08em; }
.site-nav { display: flex; gap: 22px; align-items: center; color: var(--subtext); font-size: 0.95rem; font-weight: 800; }
.site-nav a:hover { color: var(--navy); }
.nav-cta { padding: 9px 18px; color: var(--base) !important; background: var(--navy); border-radius: 999px; }
.nav-cta:hover { background: var(--navy-hover); }

.section-navy {
  background:
    radial-gradient(circle at 82% 12%, rgba(155, 215, 232, 0.30), transparent 28%),
    radial-gradient(circle at 5% 84%, rgba(255, 255, 255, 0.13), transparent 30%),
    linear-gradient(135deg, #1f2f54 0%, #263c68 55%, #3c5889 100%);
  color: var(--base);
}
.hero {
  min-height: 650px;
  padding: 104px clamp(20px, 6vw, 88px);
}
.eyebrow { margin: 0 0 12px; color: var(--accent-strong); font-weight: 900; letter-spacing: 0.14em; text-transform: uppercase; }
.hero h1, .section-heading h2 { margin: 0; line-height: 1.18; }
.hero h1 { max-width: 900px; font-size: clamp(2.25rem, 5vw, 4.55rem); letter-spacing: -0.045em; }
.hero-copy { max-width: 780px; margin-top: 28px; color: rgba(255, 255, 255, 0.88); font-size: 1.04rem; }
.hero-copy p { margin: 0 0 10px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 13px 21px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 900;
  line-height: 1.35;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}
.button:hover { transform: translateY(-1px); }
.button-primary { color: var(--base); background: var(--navy); }
.button-primary:hover { background: var(--navy-hover); }
.button-secondary { color: var(--navy); background: var(--base); border-color: var(--navy); }
.button-secondary:hover { background: var(--accent-soft); border-color: var(--navy-hover); }
.button-light { color: var(--navy); background: var(--base); }
.button-light:hover { background: var(--accent-soft); }
.button-outline-light { color: var(--base); border-color: rgba(255, 255, 255, 0.74); background: rgba(255, 255, 255, 0.08); }
.button-outline-light:hover { color: var(--navy); background: var(--base); }
.button-cyan { color: #153052; background: var(--accent); }
.button-cyan:hover { background: #c1edf6; }
.tag-list { display: flex; flex-wrap: wrap; gap: 9px; }
.tag-list span { padding: 6px 11px; color: var(--navy); background: var(--accent-soft); border: 1px solid #c7e8f2; border-radius: 999px; font-size: 0.86rem; font-weight: 900; }

.section { padding: 86px clamp(20px, 6vw, 88px); }
.section-white { background: var(--base); }
.section-muted { background: var(--muted); }
.section-heading { max-width: 820px; margin: 0 auto 42px; text-align: center; }
.section-heading.align-left { max-width: 1120px; text-align: left; }
.section-heading h2 { color: var(--navy); font-size: clamp(1.9rem, 4vw, 3.15rem); letter-spacing: -0.03em; }
.section-heading p:not(.eyebrow) { color: var(--subtext); }
.wide-card, .route-card, .domain-card, .info-card, .result-card {
  background: var(--base);
  border: 1px solid var(--line);
  border-radius: 26px;
  box-shadow: 0 10px 30px rgba(31, 47, 84, 0.08);
}
.wide-card { max-width: 1120px; margin: 0 auto; padding: 34px; }
.wide-card p { margin: 0 0 12px; }
.route-grid, .domain-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; max-width: 1120px; margin: 0 auto; }
.route-card, .domain-card, .info-card, .result-card { padding: 30px; }
.card-icon, .domain-label, .info-card span { display: inline-flex; margin-bottom: 14px; color: var(--navy); font-weight: 900; }
h3 { margin: 0 0 12px; color: var(--navy); font-size: 1.35rem; line-height: 1.35; }
.route-card p, .domain-card p, .info-card p, .result-card p, dd { color: var(--subtext); }
.check-list { display: grid; gap: 10px; margin: 22px 0 26px; padding: 0; list-style: none; }
.check-list li { position: relative; padding-left: 28px; }
.check-list li::before { content: ""; position: absolute; left: 0; top: 0.72em; width: 14px; height: 14px; background: linear-gradient(135deg, var(--navy), var(--accent-strong)); border-radius: 50%; }
.domain-card { background: linear-gradient(180deg, #ffffff 0%, #f8fbfd 100%); }
.domain-tech { padding: 14px 16px; color: var(--navy) !important; background: var(--muted-blue); border-radius: 16px; font-weight: 900; }
.process-title { margin: 22px 0 10px; color: var(--navy) !important; font-weight: 900; }
.process-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px 14px; margin: 0; padding-left: 1.2em; color: var(--subtext); font-weight: 700; }

.feature-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; max-width: 1180px; margin: 0 auto; }
.info-card span { align-items: center; justify-content: center; width: 38px; height: 38px; color: var(--base); background: var(--navy); border-radius: 50%; }
.results-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; max-width: 1180px; margin: 0 auto; }
.result-card { display: flex; flex-direction: column; }
.result-card .tag-list { margin-bottom: 16px; }
dl { display: grid; gap: 8px; margin: 14px 0 16px; }
dt { color: var(--navy); font-weight: 900; }
dd { margin: -8px 0 8px; padding-bottom: 8px; border-bottom: 1px solid var(--line); }

@media (max-width: 980px) {
  .site-header { align-items: flex-start; flex-direction: column; }
  .site-nav { flex-wrap: wrap; gap: 12px; }
  .route-grid, .domain-grid { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
  .feature-grid, .results-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .site-nav { display: none; }
  .hero, .section { padding-left: 18px; padding-right: 18px; }
  .hero-actions .button { width: 100%; }
  .feature-grid, .results-grid { grid-template-columns: 1fr; }
  .route-card, .domain-card, .info-card, .result-card, .wide-card { padding: 24px; border-radius: 22px; }
  .process-list { grid-template-columns: 1fr; }
}