:root {
  color-scheme: dark;
  --bg: #070809;
  --surface: #111315;
  --gold: #ecc97e;
  --muted: #a9a39a;
  --line: rgba(236, 201, 126, .22);
  --green: #65d6b0;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, "Microsoft YaHei", sans-serif; background: radial-gradient(circle at 80% 10%, #17211f 0, var(--bg) 38%); color: #f7f3ea; min-height: 100vh; }
a { color: inherit; }
header { height: 72px; padding: 0 max(24px, 7vw); display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); background: rgba(7,8,9,.82); backdrop-filter: blur(14px); position: sticky; top: 0; z-index: 3; }
.brand { font-size: 22px; font-weight: 800; color: var(--gold); text-decoration: none; letter-spacing: .06em; }
nav { display: flex; gap: 24px; }
nav a { color: #d8d1c3; text-decoration: none; }
main { width: min(1120px, calc(100% - 36px)); margin: 0 auto; }
.hero { padding: 104px 0 80px; display: grid; grid-template-columns: 1.2fr .8fr; gap: 64px; align-items: center; }
.eyebrow { color: var(--gold); font-weight: 800; letter-spacing: .14em; }
h1 { font-size: clamp(48px, 7vw, 92px); line-height: .98; margin: 20px 0 28px; }
h2 { font-size: clamp(30px, 4vw, 52px); margin: 0 0 20px; }
p { color: #d7d0c4; font-size: 18px; line-height: 1.8; }
.card { background: linear-gradient(145deg, rgba(28,31,31,.96), rgba(13,14,15,.96)); border: 1px solid var(--line); border-radius: 28px; padding: 34px; box-shadow: 0 30px 80px rgba(0,0,0,.35); }
.price { font-size: 58px; font-weight: 900; color: var(--gold); }
.price small { font-size: 16px; color: var(--muted); }
.checks { list-style: none; padding: 0; margin: 26px 0; }
.checks li { margin: 14px 0; color: #ded7ca; }
.checks li::before { content: "✓"; color: var(--green); margin-right: 10px; }
.button { display: inline-flex; min-height: 50px; padding: 0 24px; border-radius: 14px; align-items: center; justify-content: center; background: var(--gold); color: #17130d; font-weight: 800; text-decoration: none; border: 0; cursor: pointer; font-size: 16px; }
.button.secondary { background: transparent; color: var(--gold); border: 1px solid var(--line); }
.actions { display: flex; gap: 14px; flex-wrap: wrap; }
.section { padding: 76px 0; border-top: 1px solid var(--line); }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.device { padding: 26px; border: 1px solid var(--line); border-radius: 20px; background: rgba(18,20,21,.75); }
.device h3 { color: var(--gold); font-size: 24px; }
.download-note { max-width: 720px; margin-bottom: 28px; }
.release-links { display: flex; gap: 10px; align-items: center; font-size: 14px; }
.release-links a { color: var(--gold); }
.form { max-width: 560px; margin: 70px auto; }
.purchase-card { max-width: 680px; }
label { display: block; color: var(--muted); margin: 18px 0 8px; }
input { width: 100%; min-height: 52px; border-radius: 12px; border: 1px solid var(--line); background: #090a0b; color: white; padding: 0 16px; font-size: 18px; }
.message { min-height: 28px; color: var(--green); margin: 18px 0; }
.error { color: #ff9b8f; }
.hidden { display: none !important; }
.device-list { padding: 0; list-style: none; }
.device-list li { padding: 14px 0; border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.device-list .button { min-height: 38px; padding: 0 14px; }
footer { padding: 40px 0; color: var(--muted); border-top: 1px solid var(--line); text-align: center; }
@media (max-width: 760px) { nav { gap: 12px; font-size: 14px; } .hero { grid-template-columns: 1fr; padding-top: 64px; } .grid { grid-template-columns: 1fr; } h1 { font-size: 52px; } }