:root {
  color-scheme: light;
  --ink: #17243a;
  --muted: #526179;
  --line: #dce5ef;
  --paper: #ffffff;
  --wash: #f3f7fb;
  --brand: #166534;
  --brand-soft: #eaf6ee;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--wash);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

a { color: var(--brand); text-underline-offset: 3px; }

.shell { width: min(920px, calc(100% - 32px)); margin: 0 auto; }

header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .94);
}

nav { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { color: var(--ink); font-weight: 760; letter-spacing: -.02em; text-decoration: none; }
.nav-link { font-size: .95rem; font-weight: 650; }

main { padding: 72px 0 64px; }
.hero { padding: 52px; border: 1px solid var(--line); border-radius: 24px; background: var(--paper); box-shadow: 0 18px 45px rgba(24, 44, 77, .07); }
.eyebrow { margin: 0 0 14px; color: var(--brand); font-size: .82rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
h1, h2 { margin-top: 0; line-height: 1.15; letter-spacing: -.035em; }
h1 { max-width: 720px; margin-bottom: 22px; font-size: clamp(2.25rem, 6vw, 4.4rem); }
h2 { margin-bottom: 14px; font-size: clamp(1.35rem, 3vw, 1.9rem); }
.lead { max-width: 720px; margin: 0; color: var(--muted); font-size: clamp(1.08rem, 2vw, 1.28rem); }
.notice { margin-top: 34px; padding: 18px 20px; border-left: 4px solid var(--brand); border-radius: 0 12px 12px 0; background: var(--brand-soft); }

.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin-top: 24px; }
.card, .section { border: 1px solid var(--line); border-radius: 18px; background: var(--paper); }
.card { padding: 28px; }
.card p, .section p, .section li { color: var(--muted); }
.section { margin-top: 18px; padding: 34px; }
.section ul { margin: 12px 0 0; padding-left: 22px; }
.section li + li { margin-top: 8px; }
.meta { margin: 0 0 28px; color: var(--muted); font-size: .95rem; }

footer { padding: 30px 0 44px; border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; }
.footer-row { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }

@media (max-width: 700px) {
  main { padding-top: 36px; }
  .hero { padding: 30px 24px; border-radius: 18px; }
  .grid { grid-template-columns: 1fr; }
  .section { padding: 26px 22px; }
}