:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --surface-soft: #f3f6fb;
  --text: #162033;
  --muted: #5f6b7a;
  --border: #dde4ee;
  --primary: #1d4ed8;
  --primary-soft: #dbeafe;
  --success: #0f766e;
  --danger: #b91c1c;
  --shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
  --radius: 20px;
  --shell: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: linear-gradient(180deg, #f8fbff 0%, var(--bg) 100%);
  color: var(--text);
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.shell {
  width: min(var(--shell), calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid rgba(221, 228, 238, 0.9);
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
  color: var(--text);
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.nav-links a {
  color: var(--muted);
  font-weight: 600;
}

.hero {
  padding: 56px 0 28px;
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 24px;
  align-items: stretch;
}

.hero-copy,
.hero-card,
.info-card,
.notice-box,
.legal-page section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 36px;
}

.hero-copy h1,
.legal-page h1 {
  margin: 12px 0 16px;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.05;
}

.hero-copy p,
.info-card p,
.legal-page p,
.legal-page li {
  color: var(--muted);
  line-height: 1.7;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  padding: 8px 12px;
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 700;
  font-size: 0.9rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 14px;
  font-weight: 700;
}

.button.primary {
  background: var(--primary);
  color: #fff;
}

.button.secondary {
  background: var(--surface-soft);
  color: var(--text);
  border: 1px solid var(--border);
}

.hero-card {
  padding: 30px;
}

.hero-card h2,
.info-card h2,
.legal-page h2 {
  margin: 0 0 12px;
  font-size: 1.2rem;
}

.hero-card ul,
.legal-page ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 10px;
}

.section-grid,
.contact-grid {
  padding: 16px 0 56px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.info-card {
  padding: 24px;
}

.legal-page {
  padding: 48px 0 72px;
}

.legal-page section {
  padding: 24px;
  margin-top: 20px;
}

.legal-updated {
  margin: 8px 0 20px;
  color: var(--muted);
}

.notice-box {
  margin-top: 28px;
  padding: 20px;
  background: #fff8e8;
  border-color: #f2d59f;
  color: #7c5700;
}

.site-footer {
  border-top: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.72);
}

.footer-grid {
  padding: 28px 0 44px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
}

.footer-grid p,
.footer-grid li {
  color: var(--muted);
  line-height: 1.6;
}

.footer-grid ul {
  margin: 12px 0 0;
  padding-left: 18px;
}

@media (max-width: 900px) {
  .hero,
  .section-grid,
  .contact-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .nav {
    padding: 14px 0;
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    width: 100%;
    gap: 14px;
  }

  .hero {
    padding-top: 28px;
  }

  .hero-copy,
  .hero-card,
  .info-card,
  .legal-page section,
  .notice-box {
    padding: 20px;
  }

  .shell {
    width: min(var(--shell), calc(100% - 20px));
  }
}