:root {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: #0b1d2c;
  background-color: #f4f8fb;
  --accent: #0ea5e9;
  --accent-strong: #2563eb;
  --panel: #ffffff;
  --muted: #5b6b7a;
  --border: rgba(14, 165, 233, 0.16);
  --shadow: 0 30px 60px rgba(15, 118, 220, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top right, #e0f2ff, #f4f8fb 45%);
  color: #0b1d2c;
}

.site-shell {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 32px 60px;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 32px 0 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
  margin: 0;
  padding: 0;
}

nav a {
  color: #0b1d2c;
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s ease;
}

nav a:hover,
nav a:focus {
  color: var(--accent-strong);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 24px;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  color: white;
  background: linear-gradient(120deg, var(--accent), var(--accent-strong));
  box-shadow: 0 16px 40px rgba(37, 99, 235, 0.35);
  border: none;
}

.btn.secondary {
  color: var(--accent-strong);
  background: transparent;
  border: 2px solid rgba(14, 165, 233, 0.3);
  box-shadow: none;
}

.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: center;
  gap: 40px;
  padding: 40px 0 60px;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 3.8rem);
  margin: 0 0 1rem;
  letter-spacing: -0.01em;
}

.hero p.lead {
  font-size: 1.15rem;
  color: var(--muted);
  line-height: 1.65;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.25em;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 1rem;
}

.hero-visual {
  background: var(--panel);
  border-radius: 32px;
  border: 1px solid var(--border);
  padding: 40px;
  box-shadow: var(--shadow);
}

.hero-visual p {
  margin: 0;
  color: var(--muted);
  text-align: center;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 24px;
}

.section {
  margin-top: 60px;
  background: var(--panel);
  border-radius: 28px;
  padding: 40px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.section h2 {
  margin-top: 0;
  font-size: 1.9rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.card {
  padding: 24px;
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.07), rgba(37, 99, 235, 0.05));
  border: 1px solid rgba(14, 165, 233, 0.18);
}

.card h3 {
  margin-top: 0;
}

.dual-column {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
  align-items: center;
}

.list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.footer {
  margin-top: 60px;
  text-align: center;
  color: var(--muted);
  font-size: 0.95rem;
  padding-bottom: 30px;
}

.support-hero {
  text-align: center;
}

.support-grid {
  display: grid;
  gap: 24px;
}

.contact-card {
  padding: 28px;
  border-radius: 24px;
  border: 1px solid var(--border);
  background: linear-gradient(135deg, rgba(125, 211, 252, 0.18), rgba(37, 99, 235, 0.08));
}

.faq-item {
  padding: 24px;
  border-radius: 20px;
  border: 1px solid rgba(14, 165, 233, 0.2);
  background: #f9fbfd;
}

.faq-item h3 {
  margin-top: 0;
}

@media (max-width: 640px) {
  nav {
    flex-direction: column;
    gap: 16px;
  }

  .section {
    padding: 30px 24px;
  }
}