:root {
  color-scheme: dark;
  --bg: #03101f;
  --bg2: #061a31;
  --panel: #071f37;
  --line: rgba(38, 220, 238, 0.24);
  --text: #eaf7ff;
  --muted: #9fb2c2;
  --accent: #26dcee;
}
* { box-sizing: border-box; }
html, body { min-height: 100%; background: var(--bg); }
body {
  margin: 0;
  color: var(--text);
  font: 18px/1.65 Manrope, Arial, sans-serif;
  background:
    radial-gradient(circle at 80% -10%, rgba(38, 220, 238, 0.18), transparent 38rem),
    radial-gradient(circle at 20% 10%, rgba(10, 168, 205, 0.10), transparent 35rem),
    linear-gradient(180deg, var(--bg2), var(--bg));
  background-attachment: fixed;
}
.wrap { max-width: 1120px; margin: 0 auto; padding: 42px 22px 72px; }
.nav { display: flex; justify-content: space-between; gap: 16px; align-items: center; margin-bottom: 42px; }
.brand { font-weight: 900; color: var(--accent); text-decoration: none; font-size: 24px; text-shadow: 0 0 18px rgba(38,220,238,.7); }
.back { color: var(--muted); text-decoration: none; border: 1px solid var(--line); border-radius: 999px; padding: 10px 16px; }
.hero, .block {
  border: 1px solid var(--line);
  background: rgba(7,31,55,.72);
  border-radius: 28px;
  padding: 26px;
  box-shadow: 0 24px 80px rgba(0,0,0,.22);
  backdrop-filter: blur(2px);
}
.block + .block { margin-top: 20px; }
.section-gap { margin-top: 20px; }
h1 { font-size: clamp(34px, 5vw, 64px); line-height: 1.05; margin: 0 0 16px; letter-spacing: -.02em; }
h2 { font-size: clamp(24px, 3.8vw, 40px); line-height: 1.14; margin: 0 0 14px; letter-spacing: -.01em; }
p { margin: 0 0 14px; color: #d7eaf6; }
.lead { font-size: clamp(20px, 2.2vw, 27px); color: #e7f8ff; }
.grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 18px; margin-top: 18px; }
.item { border: 1px solid rgba(38,220,238,.22); border-radius: 18px; padding: 16px; background: rgba(2,16,31,.55); min-height: 120px; }
.item strong { display: block; color: #fff; margin-bottom: 6px; }
.cta { margin-top: 24px; display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--accent);
  border-radius: 16px;
  padding: 13px 18px;
  background: rgba(38,220,238,.1);
  color: #dfffff;
  text-decoration: none;
  font-weight: 900;
  transition: .2s ease;
}
.btn:hover { transform: translateY(-1px); border-color: rgba(38,220,238,.8); }
.price { margin-top: 14px; padding: 14px 16px; border-left: 3px solid var(--accent); background: rgba(38,220,238,.08); border-radius: 12px; }
.footer { margin-top: 48px; color: var(--muted); font-size: 14px; }
a { color: #8cf5ff; }

@media (max-width: 900px) {
  .wrap { padding: 28px 16px 54px; }
  .nav { margin-bottom: 26px; }
  .hero, .block { padding: 20px; border-radius: 22px; }
  .grid { gap: 12px; }
  .item { min-height: auto; }
}

@media (max-width: 760px) {
  .wrap { padding: 20px 12px 40px; }
  .nav { gap: 10px; margin-bottom: 18px; }
  .brand { font-size: 22px; }
  .back { padding: 8px 12px; font-size: 14px; }
  .hero, .block { padding: 16px; border-radius: 18px; }
  h1 { font-size: clamp(28px, 9vw, 40px); margin-bottom: 12px; }
  h2 { font-size: clamp(22px, 7.6vw, 30px); margin-bottom: 10px; }
  .lead { font-size: 18px; line-height: 1.5; }
  p { font-size: 16px; line-height: 1.55; margin-bottom: 12px; }
  .grid { grid-template-columns: 1fr; gap: 10px; margin-top: 12px; }
  .item { padding: 13px; border-radius: 14px; }
  .cta { margin-top: 14px; }
  .btn { width: 100%; padding: 14px 16px; border-radius: 14px; font-size: 16px; }
  .price { margin-top: 12px; font-size: 15px; }
  .footer { margin-top: 28px; font-size: 13px; line-height: 1.6; }
}