:root {
  --bg: #07080c;
  --bg-2: #10131a;
  --card: #141820;
  --line: rgba(255, 255, 255, 0.08);
  --text: #f4f5f7;
  --muted: #a7adba;
  --steel: #d5d8e0;
  --amber: #e4b15a;
  --amber-2: #f0c98a;
  --danger: #e38b7a;
  --ok: #8fcea8;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); }
body {
  font-family: "Segoe UI", "Helvetica Neue", sans-serif;
  min-height: 100vh;
  background:
    radial-gradient(900px 420px at 80% -10%, rgba(228, 177, 90, 0.12), transparent 60%),
    radial-gradient(800px 480px at -10% 20%, rgba(255, 255, 255, 0.05), transparent 55%),
    var(--bg);
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 7vw; position: sticky; top: 0; z-index: 5;
  background: rgba(7, 8, 12, 0.86); backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 14px; font-weight: 650; letter-spacing: 0.01em; }
.brand img { width: 46px; height: 46px; border-radius: 10px; background: #000; }
.nav-links { display: flex; gap: 22px; align-items: center; color: var(--muted); font-size: 15px; }
.nav-links a:hover { color: var(--text); }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 999px; padding: 12px 18px; border: 1px solid transparent;
  font-weight: 650; cursor: pointer; background: var(--amber); color: #1a1408;
}
.btn.ghost { background: transparent; color: var(--text); border-color: var(--line); }
.btn:hover { filter: brightness(1.05); }
.wrap { width: min(1120px, 86vw); margin: 0 auto; }
.hero { display: grid; grid-template-columns: 1.3fr 0.7fr; gap: 48px; padding: 72px 0 36px; align-items: center; }
.kicker { color: var(--amber-2); letter-spacing: 0.16em; text-transform: uppercase; font-size: 12px; font-weight: 700; }
h1 { font-size: clamp(42px, 6vw, 76px); line-height: 0.96; margin: 12px 0 18px; font-weight: 650; letter-spacing: -0.03em; }
.lede { font-size: 19px; line-height: 1.5; color: var(--muted); max-width: 640px; }
.hero-mark { background: #000; border-radius: 28px; padding: 28px; border: 1px solid var(--line); }
.hero-mark img { width: 100%; height: auto; display: block; }
.actions { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 28px 0 64px; }
.card {
  background: rgba(20, 24, 32, 0.92); border: 1px solid var(--line);
  border-radius: 18px; padding: 22px;
}
.card h3 { margin: 0 0 8px; font-size: 20px; }
.card p { margin: 0; color: var(--muted); line-height: 1.5; }
.section-title { margin: 10px 0 8px; font-size: 32px; letter-spacing: -0.03em; }
.prices { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin: 18px 0 72px; }
.price { padding: 28px; }
.price .amount { font-size: 56px; letter-spacing: -0.04em; margin: 8px 0; }
.price .amount span { font-size: 18px; color: var(--muted); letter-spacing: 0; }
.tag { display: inline-block; color: #1a1408; background: var(--amber); border-radius: 999px; padding: 4px 10px; font-size: 12px; font-weight: 700; }
form { display: grid; gap: 12px; }
label { display: grid; gap: 6px; color: var(--muted); font-size: 14px; }
input, select {
  background: #0c0e13; color: var(--text); border: 1px solid var(--line);
  border-radius: 12px; padding: 12px 14px; font: inherit;
}
.choice { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.choice label {
  border: 1px solid var(--line); border-radius: 14px; padding: 14px; color: var(--text);
}
.choice input { margin-right: 8px; }
.note { color: var(--muted); font-size: 14px; line-height: 1.5; }
.error { color: var(--danger); min-height: 1.2em; }
.ok { color: var(--ok); }
footer { border-top: 1px solid var(--line); color: var(--muted); padding: 28px 7vw 48px; font-size: 14px; }
@media (max-width: 860px) {
  .hero, .grid, .prices, .choice { grid-template-columns: 1fr; }
  .nav { padding: 16px 5vw; }
  .nav-links { gap: 12px; font-size: 14px; }
}