*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#0b0e14;--bg2:#131720;--bg3:#1a1f2e;
  --text:#e6edf3;--text2:#8b949e;
  --accent:#6e40c9;--accent2:#8957e5;--accent-glow:rgba(110,64,201,.25);
  --green:#2ea043;--radius:12px;
}
html{font-size:16px;scroll-behavior:smooth}
body{
  font-family:'Inter',system-ui,-apple-system,sans-serif;
  background:var(--bg);color:var(--text);
  line-height:1.6;min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--accent2);text-decoration:none}
a:hover{text-decoration:underline}

/* Layout */
.container{max-width:720px;margin:0 auto;padding:0 24px}

/* Header */
header{
  padding:20px 0;border-bottom:1px solid var(--bg3);
  background:rgba(11,14,20,.85);backdrop-filter:blur(12px);
  position:sticky;top:0;z-index:10;
}
header .container{display:flex;align-items:center;justify-content:space-between}
.logo{font-size:1.1rem;font-weight:700;letter-spacing:-.02em;color:var(--text)}
.logo span{color:var(--accent2)}
.header-badge{
  font-size:.75rem;padding:4px 10px;border-radius:20px;
  background:var(--bg3);color:var(--text2);
}

/* Hero */
.hero{padding:80px 0 60px;text-align:center}
.hero-icon{
  width:80px;height:80px;margin:0 auto 28px;
  border-radius:20px;background:linear-gradient(135deg,var(--accent),var(--accent2));
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 32px var(--accent-glow);
}
.hero-icon svg{width:40px;height:40px;color:#fff}
.hero h1{
  font-size:2.4rem;font-weight:800;letter-spacing:-.03em;
  line-height:1.15;margin-bottom:16px;
}
.hero h1 .highlight{
  background:linear-gradient(135deg,var(--accent2),#c084fc);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
}
.hero p{font-size:1.15rem;color:var(--text2);max-width:480px;margin:0 auto 36px}
.btn-buy{
  display:inline-flex;align-items:center;gap:10px;
  padding:16px 40px;border-radius:var(--radius);border:none;
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  color:#fff;font-size:1.1rem;font-weight:600;cursor:pointer;
  transition:transform .15s,box-shadow .15s;
  box-shadow:0 4px 24px var(--accent-glow);
}
.btn-buy:hover{transform:translateY(-2px);box-shadow:0 8px 32px var(--accent-glow)}
.btn-buy:active{transform:translateY(0)}
.btn-buy:disabled{opacity:.6;cursor:not-allowed;transform:none}
.price-tag{
  background:rgba(255,255,255,.15);padding:4px 12px;border-radius:8px;
  font-size:.95rem;
}

/* Product */
.product{padding:60px 0;border-top:1px solid var(--bg3)}
.product h2{
  text-align:center;font-size:1.4rem;font-weight:700;
  margin-bottom:32px;letter-spacing:-.02em;
}
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:32px}
.product-card{
  background:var(--bg2);border:1px solid var(--bg3);
  border-radius:var(--radius);padding:24px 18px;
}
.product-icon{
  width:40px;height:40px;margin-bottom:14px;
  color:var(--accent2);
}
.product-icon svg{width:100%;height:100%}
.product-card h3{font-size:.9rem;font-weight:600;margin-bottom:8px}
.product-card p{font-size:.82rem;color:var(--text2);line-height:1.5}
.price-block{
  text-align:center;background:var(--bg2);border:1px solid var(--bg3);
  border-radius:var(--radius);padding:24px;
}
.price-amount{font-size:2rem;font-weight:800;letter-spacing:-.03em}
.price-desc{font-size:.85rem;color:var(--text2);margin-top:4px}

/* Steps */
.steps{padding:60px 0;border-top:1px solid var(--bg3)}
.steps h2{
  text-align:center;font-size:1.4rem;font-weight:700;
  margin-bottom:40px;letter-spacing:-.02em;
}
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step{
  background:var(--bg2);border:1px solid var(--bg3);
  border-radius:var(--radius);padding:28px 20px;text-align:center;
}
.step-num{
  width:36px;height:36px;border-radius:50%;
  background:var(--bg3);color:var(--accent2);
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:700;font-size:.9rem;margin-bottom:14px;
}
.step h3{font-size:.95rem;font-weight:600;margin-bottom:6px}
.step p{font-size:.85rem;color:var(--text2);line-height:1.5}

/* Apps */
.apps{padding:40px 0 60px;text-align:center;border-top:1px solid var(--bg3)}
.apps h2{font-size:1.2rem;font-weight:600;margin-bottom:20px}
.app-links{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}
.app-link{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:var(--radius);
  background:var(--bg2);border:1px solid var(--bg3);
  color:var(--text);font-size:.85rem;font-weight:500;
  transition:border-color .15s;
}
.app-link:hover{border-color:var(--accent);text-decoration:none}
.app-link svg{width:18px;height:18px;opacity:.7}

/* Footer */
footer{
  padding:32px 0;border-top:1px solid var(--bg3);
  text-align:center;font-size:.8rem;color:var(--text2);
}
.footer-info p{margin-bottom:6px}
.footer-links{display:flex;justify-content:center;gap:8px;align-items:center;flex-wrap:wrap}
.footer-sep{opacity:.3}
footer a{color:var(--text2)}
footer a:hover{color:var(--text)}

/* Order page */
.order-page{padding:80px 0;text-align:center;min-height:70vh;display:flex;align-items:center}
.order-card{
  background:var(--bg2);border:1px solid var(--bg3);
  border-radius:16px;padding:48px 36px;max-width:480px;margin:0 auto;
  width:100%;
}
.order-card h1{font-size:1.6rem;font-weight:700;margin-bottom:12px}
.order-card p{color:var(--text2);margin-bottom:24px}
.status-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:20px;font-size:.85rem;font-weight:500;
  margin-bottom:24px;
}
.status-pending{background:rgba(210,153,34,.15);color:#d29922}
.status-paid{background:rgba(46,160,67,.15);color:#2ea043}
.status-failed{background:rgba(218,54,51,.15);color:#da3633}

.qr-wrap{
  background:#fff;border-radius:12px;padding:16px;
  display:inline-block;margin:20px 0;
}
.qr-wrap img{display:block;max-width:280px;width:100%}
.btn-download{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 28px;border-radius:var(--radius);border:none;
  background:var(--green);color:#fff;font-size:.95rem;
  font-weight:600;cursor:pointer;transition:opacity .15s;
  margin-top:16px;
}
.btn-download:hover{opacity:.9}
.instructions{
  text-align:left;background:var(--bg);border-radius:var(--radius);
  padding:20px;margin-top:24px;font-size:.85rem;color:var(--text2);line-height:1.8;
}
.instructions strong{color:var(--text)}
.save-warning{
  margin-top:20px;padding:12px 16px;border-radius:8px;
  background:rgba(210,153,34,.1);border:1px solid rgba(210,153,34,.2);
  font-size:.8rem;color:#d29922;
}

/* Spinner */
.spinner{
  width:32px;height:32px;border:3px solid var(--bg3);
  border-top-color:var(--accent2);border-radius:50%;
  animation:spin .8s linear infinite;margin:0 auto 16px;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* Use cases */
.usecases{padding:50px 0;border-top:1px solid var(--bg3)}
.usecases h2{
  text-align:center;font-size:1.4rem;font-weight:700;
  margin-bottom:32px;letter-spacing:-.02em;
}

/* Offer page */
.offer-page{padding:60px 0;min-height:70vh}
.offer-page h1{font-size:1.6rem;font-weight:700;margin-bottom:8px}
.offer-page .offer-date{color:var(--text2);font-size:.85rem;margin-bottom:32px}
.offer-page h2{font-size:1.1rem;font-weight:600;margin:28px 0 12px}
.offer-page p,.offer-page li{font-size:.88rem;color:var(--text2);line-height:1.7;margin-bottom:8px}
.offer-page ul,.offer-page ol{padding-left:20px}
.offer-page li{margin-bottom:6px}

/* Responsive */
@media(max-width:640px){
  .hero{padding:50px 0 40px}
  .hero h1{font-size:1.8rem}
  .hero p{font-size:1rem}
  .product-grid{grid-template-columns:1fr;gap:12px}
  .steps-grid{grid-template-columns:1fr;gap:12px}
  .order-card{padding:32px 20px}
  .btn-buy{padding:14px 28px;font-size:1rem}
}