:root {
  --bg: #f7f9fc;
  --surface: #ffffff;
  --surface-soft: #edf4fb;
  --text: #102033;
  --muted: #5d6b7c;
  --line: #dce5ef;
  --primary: #1d5f9f;
  --primary-dark: #123d68;
  --accent: #4fa4c8;
  --shadow: 0 18px 45px rgba(18, 61, 104, 0.12);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Sans JP", "Yu Gothic", "Meiryo", system-ui, sans-serif;
  line-height: 1.75;
  letter-spacing: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.section {
  padding: 88px 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(220, 229, 239, 0.8);
  backdrop-filter: blur(14px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #ffffff;
  font-size: 18px;
}

.brand-name {
  font-size: 21px;
  letter-spacing: 0;
}

.site-nav,
.footer-links {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.site-nav a,
.footer-links a,
.text-link {
  transition: color 0.2s ease;
}

.site-nav a:hover,
.footer-links a:hover,
.text-link:hover {
  color: var(--primary);
}

.hero {
  padding: 108px 0 96px;
  background:
    linear-gradient(180deg, #ffffff 0%, #f7f9fc 74%),
    radial-gradient(circle at 78% 22%, rgba(79, 164, 200, 0.16), transparent 32%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.75fr);
  gap: 56px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  font-size: clamp(42px, 6vw, 72px);
  line-height: 1.12;
  letter-spacing: 0;
}

h2 {
  margin: 0;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.22;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 10px;
  font-size: 20px;
  line-height: 1.35;
}

.hero-lead {
  max-width: 680px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 19px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  padding: 0 22px;
  font-weight: 800;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 12px 24px rgba(29, 95, 159, 0.24);
}

.button-secondary {
  background: #ffffff;
  border: 1px solid var(--line);
  color: var(--primary-dark);
}

.hero-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: 24px;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: var(--muted);
  font-size: 13px;
}

.panel-head strong {
  color: var(--primary-dark);
}

.metric-card {
  margin-top: 24px;
  border-radius: var(--radius);
  background: var(--surface-soft);
  padding: 20px;
}

.metric-card strong {
  display: block;
  margin-top: 6px;
  font-size: 22px;
  line-height: 1.35;
}

.metric-label {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.mini-chart {
  display: flex;
  height: 160px;
  align-items: end;
  gap: 14px;
  margin-top: 24px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #ffffff, #f8fbfe);
}

.mini-chart span {
  flex: 1;
  min-width: 24px;
  border-radius: 6px 6px 0 0;
  background: linear-gradient(180deg, var(--accent), var(--primary));
}

.panel-list {
  display: grid;
  gap: 10px;
  margin-top: 20px;
}

.panel-list p {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.panel-list span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 34px;
}

.section-lead {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.split-heading {
  display: flex;
  max-width: none;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
}

.text-link {
  color: var(--primary);
  font-weight: 800;
}

.feature-section {
  background: #ffffff;
}

.feature-grid,
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 10px 28px rgba(18, 61, 104, 0.07);
}

.feature-card,
.article-card {
  padding: 26px;
}

.feature-card p,
.article-card p,
.about-card p,
.data-item p,
.site-footer p {
  margin: 0;
  color: var(--muted);
}

.card-icon {
  display: inline-flex;
  margin-bottom: 22px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 900;
}

.article-card {
  display: flex;
  min-height: 250px;
  flex-direction: column;
}

.article-card-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: 18px;
  border: 1px solid var(--line);
}

.article-card .status {
  width: fit-content;
  margin-bottom: 18px;
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--primary-dark);
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 800;
}

.article-card a {
  margin-top: auto;
  color: var(--primary);
  font-weight: 800;
}

.data-section {
  background: linear-gradient(180deg, #f7f9fc 0%, #eef5fb 100%);
}

.data-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 1fr);
  gap: 48px;
  align-items: start;
}

.data-list {
  display: grid;
  gap: 14px;
}

.data-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.86);
  padding: 22px;
}

.data-item span {
  flex: 0 0 auto;
  border-radius: 999px;
  background: #e7eef7;
  color: var(--primary-dark);
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 800;
}

.about-section {
  background: #ffffff;
}

.about-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(135deg, #ffffff 0%, #f3f8fd 100%);
  padding: 46px;
}

.about-card p:last-child {
  max-width: 860px;
  margin-top: 18px;
  font-size: 17px;
}

.site-footer {
  background: #102033;
  color: #ffffff;
  padding: 44px 0 24px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 32px;
}

.footer-brand {
  margin-bottom: 12px;
}

.footer-links {
  align-items: flex-start;
  color: rgba(255, 255, 255, 0.72);
}

.copyright {
  margin-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  padding-top: 18px;
  color: rgba(255, 255, 255, 0.62);
}

@media (max-width: 880px) {
  .header-inner,
  .footer-inner,
  .split-heading,
  .data-grid {
    align-items: flex-start;
    flex-direction: column;
  }

  .header-inner {
    padding: 14px 0;
  }

  .site-nav,
  .footer-links {
    width: 100%;
    flex-wrap: wrap;
    gap: 14px 18px;
  }

  .hero {
    padding-top: 72px;
  }

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

  .feature-grid,
  .article-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(100% - 28px, 1120px);
  }

  .section {
    padding: 62px 0;
  }

  .hero {
    padding: 64px 0;
  }

  h1 {
    font-size: 42px;
  }

  .hero-lead,
  .section-lead,
  .about-card p:last-child {
    font-size: 16px;
  }

  .button {
    width: 100%;
  }

  .hero-panel,
  .feature-card,
  .article-card,
  .about-card {
    padding: 22px;
  }

  .data-item {
    align-items: flex-start;
    flex-direction: column;
  }
}