:root {
  color-scheme: light;
  --ink: #172033;
  --muted: #5d687b;
  --blue: #1769e0;
  --blue-dark: #0d4fae;
  --line: #dce3ee;
  --panel: #f5f8fc;
  --white: #ffffff;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 280px;
  color: var(--ink);
  background: var(--white);
  font: 16px/1.65 "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

a { color: var(--blue-dark); }
a:hover { color: var(--blue); }

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.96);
}

.header-inner,
main,
.footer-inner {
  width: min(920px, calc(100% - 40px));
  margin: 0 auto;
}

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

.brand {
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
  letter-spacing: -0.01em;
}

nav { display: flex; gap: 20px; }
nav a { font-weight: 600; text-decoration: none; }

main { padding: 72px 0 80px; }

.eyebrow {
  margin: 0 0 12px;
  color: var(--blue-dark);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1, h2 { line-height: 1.2; letter-spacing: -0.025em; }
h1 { max-width: 760px; margin: 0; font-size: clamp(2.25rem, 6vw, 4.25rem); }
h2 { margin: 0 0 14px; font-size: clamp(1.35rem, 3vw, 1.75rem); }

.lead {
  max-width: 760px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 1.18rem;
}

.notice {
  margin: 38px 0 0;
  padding: 20px 22px;
  border: 1px solid #b8d2f7;
  border-left: 5px solid var(--blue);
  border-radius: 10px;
  background: #eef5ff;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 48px;
}

.card {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
}

.card p, .content p, .content li { color: var(--muted); }
.card p { margin: 0; }

.content { max-width: 780px; }
.content section { margin-top: 42px; }
.content ul { padding-left: 22px; }
.content strong { color: var(--ink); }

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  background: var(--panel);
}

.footer-inner {
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-inner p { margin: 0; }

@media (max-width: 680px) {
  .header-inner, .footer-inner { align-items: flex-start; flex-direction: column; padding: 18px 0; }
  nav { flex-wrap: wrap; gap: 10px 18px; }
  main { padding: 48px 0 60px; }
  .grid { grid-template-columns: 1fr; margin-top: 34px; }
}