:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-soft: #f8fbff;
  --text: #17273d;
  --text-muted: #5f6d7a;
  --border: #e8eef5;
  --primary: #0f2e4f;
  --accent: #4fd1c5;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, system-ui, sans-serif;
  color: var(--text);
  background: linear-gradient(135deg, #f8fbff 0%, var(--bg) 100%);
}
.page-shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 24px;
}
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding-bottom: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--primary);
  text-decoration: none;
  font-weight: 700;
}
.brand-mark {
  width: 54px;
  height: 54px;
}
.nav-links {
  display: flex;
  gap: 20px;
}
.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
}
.hero {
  padding: 40px 0;
}
.hero-copy h1 {
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  margin-bottom: 18px;
}
.hero-sub {
  max-width: 650px;
  margin-bottom: 24px;
  color: var(--text-muted);
  line-height: 1.7;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), #183a62);
  color: white;
}
.section-heading {
  margin-bottom: 22px;
}
.section-heading h2 {
  font-size: clamp(1.7rem, 2.4vw, 2.2rem);
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.support-card, .faq-item {
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 22px;
  box-shadow: 0 16px 28px rgba(15, 46, 79, 0.06);
}
.support-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}
.faq-list {
  display: grid;
  gap: 16px;
}
.faq-item h3 {
  margin-bottom: 10px;
}
.cta-banner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  padding: 28px 32px;
  margin: 36px 0;
  border-radius: 24px;
  background: linear-gradient(135deg, #0d2e4d, #163d64);
  color: white;
}
.footer {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  padding: 28px 0 10px;
  color: var(--text-muted);
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
@media (max-width: 900px) {
  .card-grid {
    grid-template-columns: 1fr;
  }
  .cta-banner {
    flex-direction: column;
    align-items: flex-start;
  }
}