:root {
  --navy: #061b49;
  --navy-2: #0b275f;
  --gold: #b08a2d;
  --gold-soft: #d5c186;
  --ink: #111827;
  --muted: #5f6877;
  --line: #e7e9ee;
  --bg: #ffffff;
  --bg-soft: #f7f8fb;
  --shadow: 0 22px 70px rgba(6, 27, 73, 0.10);
  --radius: 24px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", "Noto Sans JP", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.75;
  letter-spacing: 0.02em;
}

a {
  color: inherit;
}

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(231, 233, 238, 0.82);
}

.header-inner {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.brand-logo {
  width: 290px;
  height: auto;
  display: block;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--navy);
  font-size: 14px;
  font-weight: 600;
}

.site-nav a {
  text-decoration: none;
  position: relative;
  padding: 8px 0;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 3px;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width 0.2s ease;
}

.site-nav a:hover::after {
  width: 100%;
}

.section {
  padding: 92px 0;
}

.hero {
  min-height: 720px;
  display: flex;
  align-items: center;
  background:
    radial-gradient(circle at 78% 22%, rgba(176, 138, 45, 0.13), transparent 34%),
    radial-gradient(circle at 8% 12%, rgba(6, 27, 73, 0.10), transparent 36%),
    linear-gradient(180deg, #ffffff 0%, #fbfbfd 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.65fr);
  gap: 56px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--gold);
  font-family: "Times New Roman", "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 700;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--navy);
}

h1,
h2 {
  font-family: "Times New Roman", "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-weight: 500;
  letter-spacing: 0.04em;
}

h1 {
  font-size: clamp(44px, 6vw, 76px);
  line-height: 1.12;
}

h2 {
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.25;
}

h3 {
  font-size: 20px;
  line-height: 1.5;
}

.lead {
  max-width: 680px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  font-size: 14px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  color: #fff;
  background: var(--navy);
  box-shadow: 0 14px 30px rgba(6, 27, 73, 0.18);
}

.button.primary:hover {
  background: var(--navy-2);
}

.button.secondary {
  color: var(--navy);
  border: 1px solid rgba(6, 27, 73, 0.18);
  background: #fff;
}

.hero-card {
  padding: 38px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(231, 233, 238, 0.88);
  box-shadow: var(--shadow);
}

.hero-icon {
  width: 160px;
  display: block;
  margin: 0 auto 26px;
}

.card-title {
  color: var(--navy);
  font-family: "Times New Roman", "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: 22px;
  line-height: 1.35;
  text-align: center;
  margin: 0 0 16px;
}

.hero-card p:last-child {
  color: var(--muted);
  margin: 0;
}

.muted {
  background: var(--bg-soft);
}

.split {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 56px;
  align-items: start;
}

.section-text {
  color: var(--muted);
  margin: 0;
  font-size: 16px;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 42px;
}

.section-heading p:last-child {
  color: var(--muted);
  margin: 16px 0 0;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.card {
  min-height: 250px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(176, 138, 45, 0.26);
}

.number {
  display: inline-block;
  color: var(--gold);
  font-family: "Times New Roman", serif;
  font-size: 17px;
  margin-bottom: 16px;
}

.card p,
.field-item p {
  color: var(--muted);
  margin: 14px 0 0;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.field-item {
  padding: 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
}

.notice {
  margin: 28px 0 0;
  padding: 18px 22px;
  color: #515a68;
  background: #fff;
  border-left: 3px solid var(--gold);
  border-radius: 14px;
  font-size: 14px;
}

.company-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 54px;
  align-items: start;
}

.company-list {
  margin: 0;
  border-top: 1px solid var(--line);
}

.company-list div {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 26px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.company-list dt {
  color: var(--navy);
  font-weight: 700;
}

.company-list dd {
  margin: 0;
  color: var(--ink);
}

.company-list a {
  color: var(--navy);
  text-decoration-color: var(--gold);
  text-underline-offset: 4px;
}

.placeholder {
  color: #8b94a3;
  font-size: 13px;
}

.contact-section {
  padding-top: 30px;
}

.contact-card {
  padding: 56px;
  border-radius: 32px;
  background:
    linear-gradient(135deg, rgba(6, 27, 73, 0.95), rgba(9, 41, 92, 0.92)),
    radial-gradient(circle at 86% 20%, rgba(176, 138, 45, 0.35), transparent 30%);
  color: #fff;
  box-shadow: var(--shadow);
}

.contact-card h2 {
  color: #fff;
}

.contact-card p:not(.eyebrow) {
  max-width: 760px;
  color: rgba(255, 255, 255, 0.82);
}

.contact-card .button.primary {
  margin-top: 20px;
  color: var(--navy);
  background: #fff;
}

.site-footer {
  padding: 34px 0;
  border-top: 1px solid var(--line);
  background: #fff;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
}

.footer-inner > div {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-icon {
  width: 42px;
  height: auto;
}

.copyright {
  margin: 0;
}

@media (max-width: 920px) {
  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 0;
  }

  .site-nav {
    width: 100%;
    overflow-x: auto;
    gap: 18px;
    padding-bottom: 4px;
  }

  .brand-logo {
    width: 250px;
  }

  .hero {
    min-height: auto;
  }

  .hero-grid,
  .split,
  .company-grid {
    grid-template-columns: 1fr;
  }

  .cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 28px, 1120px);
  }

  .section {
    padding: 66px 0;
  }

  .hero {
    padding-top: 34px;
  }

  .lead {
    font-size: 16px;
  }

  .cards,
  .field-grid {
    grid-template-columns: 1fr;
  }

  .card {
    min-height: auto;
  }

  .company-list div {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .contact-card {
    padding: 36px 24px;
    border-radius: 24px;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}