:root {
  color-scheme: light;
  --ink: #172033;
  --muted: #5d687d;
  --line: #dce3ee;
  --panel: #ffffff;
  --accent: #3157d5;
  --accent-soft: #edf2ff;
  --background: #f5f7fb;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--background);
  color: var(--ink);
  font-family: Inter, "Segoe UI", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  line-height: 1.7;
}

a { color: var(--accent); }
a:hover { text-decoration-thickness: 2px; }

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

header {
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
}

nav {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 750;
  text-decoration: none;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 0.94rem;
}

.nav-links a { text-decoration: none; }

main { padding: 64px 0 72px; }

.hero {
  padding: 56px;
  background: linear-gradient(135deg, #ffffff 0%, #eef3ff 100%);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: 0 18px 50px rgba(34, 55, 100, 0.08);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2.15rem, 6vw, 4rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.lead {
  max-width: 720px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 1.1rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 28px;
}

.card, .document {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
}

.card { padding: 24px; }
.card h2 { margin-top: 0; font-size: 1.08rem; }
.card p { margin-bottom: 0; color: var(--muted); }

.document { padding: 42px 48px; }
.document h1 { font-size: clamp(2rem, 5vw, 3.15rem); }
.document h2 { margin: 38px 0 8px; font-size: 1.25rem; }
.document h3 { margin: 22px 0 6px; font-size: 1.05rem; }
.document p, .document li { color: #354157; }
.document ul { padding-left: 1.25rem; }

.meta {
  margin: 12px 0 32px;
  color: var(--muted);
  font-size: 0.92rem;
}

.notice {
  margin: 28px 0;
  padding: 18px 20px;
  background: var(--accent-soft);
  border-left: 4px solid var(--accent);
  border-radius: 10px;
}

footer {
  padding: 28px 0 42px;
  color: var(--muted);
  text-align: center;
  font-size: 0.9rem;
}

footer a { margin: 0 8px; }

@media (max-width: 760px) {
  nav { align-items: flex-start; flex-direction: column; padding: 16px 0; }
  .hero, .document { padding: 28px 24px; }
  .grid { grid-template-columns: 1fr; }
  main { padding-top: 30px; }
}