:root {
  --criblue: #0033FF;
  --crimint: #76D2B6;
  --cridark: #2B2B2B;
  --crilightblue: #EEF0FF;
  --crilightmint: #E8F6F0;
  --crigrey: #6A6A75;
}
* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  font-family: -apple-system, "Helvetica Neue", "Segoe UI", "Inter", sans-serif;
  color: var(--cridark);
  line-height: 1.6;
  background: white;
  -webkit-font-smoothing: antialiased;
}
.container { max-width: 980px; margin: 0 auto; padding: 0 24px; }
a { color: var(--criblue); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-nav {
  background: white;
  border-bottom: 1px solid var(--crilightblue);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 10;
}
.site-nav .container { display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.site-nav .brand {
  font-weight: 700;
  color: var(--criblue);
  font-size: 18px;
  letter-spacing: 0.02em;
}
.site-nav nav ul {
  list-style: none; margin: 0; padding: 0;
  display: flex; gap: 22px; flex-wrap: wrap; justify-content: flex-end;
}
.site-nav nav a { color: var(--cridark); font-size: 14.5px; font-weight: 500; }

.hero {
  background: var(--criblue);
  color: white;
  padding: 88px 0 104px;
  border-bottom: 6px solid var(--crimint);
}
.hero h1 {
  font-size: 52px;
  margin: 0 0 14px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
}
.hero .lead {
  font-size: 22px;
  max-width: 680px;
  opacity: 0.95;
  margin: 0;
}
.hero .cta { margin-top: 36px; display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary, .btn-secondary {
  display: inline-block;
  padding: 13px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  transition: opacity 0.15s;
}
.btn-primary { background: var(--crimint); color: var(--cridark); }
.btn-secondary {
  background: rgba(255,255,255,0.12);
  color: white;
  border: 1px solid rgba(255,255,255,0.6);
}
.btn-primary:hover, .btn-secondary:hover { text-decoration: none; opacity: 0.92; }

.section { padding: 80px 0; }
.section.alt { background: var(--crilightblue); }
.section h2 {
  font-size: 34px;
  color: var(--criblue);
  margin: 0 0 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.section h3 {
  font-size: 19px;
  color: var(--cridark);
  margin: 0 0 8px;
  font-weight: 700;
}
.section p { margin: 0 0 12px; }

.section .topics { list-style: none; padding: 0; margin: 24px 0 0; }
.section .topics li {
  background: var(--crilightmint);
  padding: 12px 18px;
  border-left: 3px solid var(--crimint);
  border-radius: 0 6px 6px 0;
  margin-bottom: 10px;
  font-size: 15px;
}

.section .cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 24px;
}
.section .card {
  background: white;
  border: 1px solid var(--crilightblue);
  border-left: 3px solid var(--criblue);
  padding: 22px;
  border-radius: 0 8px 8px 0;
}
.section .card h3 { margin-top: 0; }
.section.alt .card { background: white; }
.section .card.placeholder { color: var(--crigrey); border-left-color: var(--crigrey); }

.site-footer {
  background: var(--cridark);
  color: white;
  padding: 32px 0;
  text-align: center;
  font-size: 14px;
}
.site-footer p { margin: 4px 0; }
.site-footer a { color: var(--crimint); }
.site-footer span { opacity: 0.5; margin: 0 6px; }

@media (max-width: 720px) {
  .hero { padding: 56px 0 72px; }
  .hero h1 { font-size: 36px; }
  .hero .lead { font-size: 18px; }
  .site-nav .container { flex-direction: column; align-items: flex-start; gap: 10px; }
  .site-nav nav ul { gap: 14px; font-size: 13px; }
  .section { padding: 56px 0; }
  .section h2 { font-size: 26px; }
}