:root {
  --bg: #0a0a0c; --surface: #131316; --surface-2: #18181c; --line: #222228; --text: #ededef; --muted: #8e8e96; --faint: #5c5c63;
  --green: #4ade80; --accent: #ededef; --on-accent: #0a0a0c;
  --shadow: 0 1px 0 rgba(255,255,255,.03) inset, 0 16px 40px -20px rgba(0,0,0,.7);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.6 Inter, system-ui, "Segoe UI", sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
.hidden { display: none !important; }
.nav { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: 24px; padding: 14px max(20px, calc(50% - 560px));
  background: color-mix(in srgb, var(--bg) 82%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.brand { display: flex; gap: 10px; align-items: center; font-weight: 600; }
.brand img { width: 24px; height: 24px; }
.nav nav { display: flex; gap: 22px; margin-left: auto; color: var(--muted); font-size: 14px; }
.nav nav a:hover { color: var(--text); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 0; cursor: pointer; font: inherit; font-weight: 600;
  padding: 11px 20px; border-radius: 12px; background: var(--surface-2); color: var(--text); transition: transform .15s, filter .15s, background-color .15s; }
.btn:hover { background: #222228; }
.btn:active { transform: scale(.98); }
.btn.primary { background: var(--accent); color: var(--on-accent); }
.btn.primary:hover { filter: brightness(1.1); }
.btn.small { padding: 7px 14px; font-size: 13px; border-radius: 10px; }
.btn.big { padding: 15px 28px; font-size: 16px; }
.btn:disabled { opacity: .6; cursor: default; }

.hero { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; max-width: 1120px; margin: 0 auto; padding: 90px 20px 70px; }
.kicker { color: var(--green); font-size: 13px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; margin: 0 0 14px; }
h1 { font-size: clamp(34px, 5vw, 54px); line-height: 1.08; letter-spacing: -.035em; margin: 0 0 18px; }
h1 span { color: var(--muted); }
.lead { color: var(--muted); font-size: 17px; max-width: 620px; }
.cta { display: flex; gap: 10px; margin: 26px 0 12px; flex-wrap: wrap; }
.tiny { font-size: 12.5px; color: var(--faint); }
.center { text-align: center; margin-left: auto; margin-right: auto; }
.hero-card { background: var(--surface); border-radius: 20px; padding: 20px; box-shadow: var(--shadow); border: 1px solid rgba(255,255,255,.05);
  animation: rise .8s cubic-bezier(.16,1,.3,1) both; }
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
.mock-top { display: flex; gap: 12px; align-items: flex-start; }
.mock-top .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--green); margin-top: 7px; box-shadow: 0 0 14px var(--green); }
.mock-top b { display: block; } .mock-top span { color: var(--muted); font-size: 13px; }
.mock-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 18px 0; }
.mock-stats div { background: var(--surface-2); border-radius: 12px; padding: 10px 12px; }
.mock-stats span { display: block; font-size: 11.5px; color: var(--muted); }
.mock-stats b { font-size: 19px; } .mock-stats small { color: var(--muted); font-weight: 500; font-size: 12px; }
.mock-trade { background: var(--surface-2); border-radius: 14px; padding: 14px; }
.mt-head { display: flex; justify-content: space-between; font-size: 14px; }
.pos { color: var(--green); }
.mt-sides { display: flex; align-items: center; gap: 12px; margin: 12px 0; color: var(--faint); }
.mt-sides div { display: flex; gap: 6px; }
.mt-sides i { width: 38px; height: 38px; border-radius: 10px; background: linear-gradient(135deg, #26262c, #1c1c21); display: block; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip { font-size: 11px; font-weight: 600; padding: 2px 9px; border-radius: 99px; background: #222228; color: var(--muted); }
.chip.good { color: var(--green); background: color-mix(in srgb, var(--green) 12%, transparent); }
.mock-note { font-size: 11px; color: var(--faint); margin: 10px 0 0; text-align: right; }

.section { max-width: 1120px; margin: 0 auto; padding: 70px 20px; }
.section h2 { font-size: clamp(26px, 3.4vw, 36px); letter-spacing: -.03em; margin: 0 0 12px; text-align: center; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 36px; }
.grid article { background: var(--surface); border-radius: 18px; padding: 22px; box-shadow: var(--shadow); border: 1px solid rgba(255,255,255,.04); }
.ic { width: 38px; height: 38px; border-radius: 11px; display: grid; place-items: center; background: var(--surface-2); color: var(--green); font-size: 18px; }
.grid h3 { margin: 14px 0 6px; font-size: 16px; }
.grid p { margin: 0; color: var(--muted); font-size: 14px; }
.split { display: grid; grid-template-columns: .9fr 1.1fr; gap: 40px; align-items: center; }
.split h2 { text-align: left; }
.checks { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.checks li { background: var(--surface); border-radius: 14px; padding: 14px 16px 14px 46px; position: relative; color: var(--muted); font-size: 14px; }
.checks li::before { content: "✓"; position: absolute; left: 16px; top: 13px; color: var(--green); font-weight: 700; }
.checks b { color: var(--text); }
.plans { display: grid; grid-template-columns: repeat(3, minmax(0, 300px)); gap: 16px; justify-content: center; margin: 30px 0 22px; }
.plan { background: var(--surface); border-radius: 20px; padding: 26px; box-shadow: var(--shadow); position: relative; border: 1px solid rgba(255,255,255,.05); }
.plan.best { border-color: color-mix(in srgb, var(--green) 40%, transparent); }
.plan .tag { position: absolute; top: 18px; right: 18px; font-size: 11px; font-weight: 700; color: var(--green); background: color-mix(in srgb, var(--green) 12%, transparent); padding: 3px 9px; border-radius: 99px; }
.plan h3 { margin: 0; font-size: 15px; color: var(--muted); font-weight: 600; }
.price { font-size: 42px; font-weight: 700; letter-spacing: -.03em; margin: 6px 0; }
.plan p { color: var(--muted); font-size: 14px; min-height: 44px; }
.plan .btn { width: 100%; }
.pay { display: flex; gap: 14px; align-items: center; justify-content: center; flex-wrap: wrap; color: var(--muted); font-size: 14px; }
.coins { display: flex; gap: 6px; background: var(--surface); padding: 4px; border-radius: 12px; }
.coins label { padding: 6px 14px; border-radius: 9px; cursor: pointer; font-weight: 600; color: var(--muted); }
.coins input { display: none; }
.coins label:has(input:checked) { background: var(--surface-2); color: var(--text); }
.renew { cursor: pointer; display: flex; gap: 6px; align-items: center; }
#renew-key { background: var(--surface); border: 1px solid var(--line); color: var(--text); border-radius: 10px; padding: 8px 12px; font: 13px ui-monospace, Consolas, monospace; width: 300px; }
.error { color: #f87171; font-size: 14px; }
code { background: var(--surface-2); padding: 1px 6px; border-radius: 6px; font-size: 13px; }
.download { text-align: center; }
.faq { max-width: 760px; }
.faq details { background: var(--surface); border-radius: 14px; padding: 14px 18px; margin-top: 10px; }
.faq summary { cursor: pointer; font-weight: 600; list-style: none; }
.faq summary::after { content: "+"; float: right; color: var(--muted); }
.faq details[open] summary::after { content: "–"; }
.faq p { color: var(--muted); margin: 10px 0 0; font-size: 14px; }
.foot { max-width: 1120px; margin: 40px auto 0; padding: 30px 20px 50px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }

/* success page */
.order { max-width: 620px; margin: 70px auto; padding: 0 20px; }
.order .card { background: var(--surface); border-radius: 20px; padding: 28px; box-shadow: var(--shadow); }
.steps { display: grid; gap: 8px; margin: 18px 0; }
.steps div { display: flex; gap: 10px; align-items: center; color: var(--faint); }
.steps div.on { color: var(--text); } .steps div.done { color: var(--green); }
.steps i { width: 9px; height: 9px; border-radius: 50%; background: currentColor; }
.keybox { display: flex; gap: 8px; align-items: center; background: var(--surface-2); border-radius: 12px; padding: 12px 14px; margin: 16px 0;
  font: 600 16px ui-monospace, Consolas, monospace; letter-spacing: .03em; word-break: break-all; }
.keybox span { flex: 1; }

@media (max-width: 860px) {
  .hero, .split { grid-template-columns: 1fr; padding-top: 50px; }
  .grid { grid-template-columns: 1fr; }
  .plans { grid-template-columns: 1fr; }
  .nav nav { display: none; }
  .nav .btn { margin-left: auto; }
}
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; scroll-behavior: auto !important; } }