:root {
  --bg: #0c1220;
  --panel: #111c2e;
  --paper: #f8fafc;
  --ink: #102033;
  --muted: #5b6b80;
  --line: rgba(255,255,255,.16);
  --teal: #2dd4bf;
  --gold: #f4b84a;
  --blue: #38bdf8;
  --danger: #f97316;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  background: var(--bg);
  color: var(--paper);
  letter-spacing: 0;
}

a { color: inherit; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(12,18,32,.94);
  backdrop-filter: blur(12px);
}

.wrap {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.nav {
  min-height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--teal);
  font-weight: 900;
  text-decoration: none;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  color: #07151f;
  background: linear-gradient(135deg, var(--teal), var(--gold));
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 8px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 900;
  white-space: nowrap;
}

.btn-primary {
  color: #102033;
  background: var(--gold);
  box-shadow: 0 14px 30px rgba(244,184,74,.2);
}

.btn-secondary {
  color: var(--paper);
  border-color: var(--line);
  background: rgba(255,255,255,.06);
}

.hero {
  padding: 74px 0 54px;
  background: linear-gradient(135deg, #0c1220 0%, #123b3d 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(280px, .82fr);
  gap: 42px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

h1 {
  max-width: 880px;
  margin: 0;
  font-size: clamp(38px, 6vw, 66px);
  line-height: 1.02;
}

.hero p {
  max-width: 760px;
  margin: 22px 0 0;
  color: #d3e0ed;
  font-size: 20px;
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.cover {
  width: min(100%, 460px);
  margin-left: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 18px 50px rgba(0,0,0,.3);
}

section { padding: 58px 0; }

.light {
  background: var(--paper);
  color: var(--ink);
}

.dark {
  background: #0f1e2f;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-title {
  margin: 0 0 14px;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.08;
}

.section-lead {
  max-width: 800px;
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.6;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.card {
  min-height: 170px;
  padding: 20px;
  border: 1px solid #dbe4ef;
  border-radius: 8px;
  background: #fff;
}

.card h3 {
  margin: 0 0 10px;
  font-size: 18px;
}

.card p, .card li {
  color: #475569;
  line-height: 1.55;
}

.card p { margin: 0; }

.offer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 28px;
  align-items: center;
}

.offer-box {
  padding: 26px;
  border: 1px solid #dbe4ef;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 14px 32px rgba(15,30,47,.08);
}

.offer-box ul {
  margin: 18px 0 22px;
  padding-left: 20px;
  color: #334155;
  line-height: 1.7;
}

.price strong {
  color: var(--danger);
  font-size: 28px;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 10px;
  border-radius: 8px;
  background: rgba(45,212,191,.14);
  color: #0f766e;
  font-size: 13px;
  font-weight: 900;
}

.article {
  max-width: 860px;
}

.article h2 {
  margin-top: 34px;
  font-size: 28px;
}

.article p, .article li {
  color: #334155;
  font-size: 18px;
  line-height: 1.7;
}

.faq {
  display: grid;
  max-width: 860px;
  gap: 12px;
}

details {
  padding: 16px 18px;
  border: 1px solid #dbe4ef;
  border-radius: 8px;
  background: #fff;
}

summary {
  cursor: pointer;
  font-weight: 900;
}

details p {
  margin: 12px 0 0;
  color: #475569;
  line-height: 1.6;
}

.footer {
  padding: 34px 0;
  border-top: 1px solid var(--line);
  background: #090f1b;
  color: #cbd5e1;
  font-size: 14px;
}

@media (max-width: 860px) {
  .hero-grid,
  .offer,
  .grid {
    grid-template-columns: 1fr;
  }

  .cover { margin: 8px 0 0; }

  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0;
  }

  .nav-actions {
    width: 100%;
  }

  .nav-actions .btn {
    flex: 1;
  }
}