:root {
  --bg: #0b0f17;
  --bg-2: #121827;
  --surface: #172037;
  --primary: #2ee88f;
  --secondary: #7d5ded;
  --text: #e6eefc;
  --muted: #9aa5b1;
  --border: rgba(255,255,255,.08);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: Inter, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--text);
  background-color: var(--bg);
  background-image: radial-gradient(1000px 520px at 15% 0%, #121827 0%, rgba(18,24,39,0) 70%);
  background-repeat: no-repeat;
  background-attachment: fixed;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  background: linear-gradient(180deg, rgba(18,24,39,.9), rgba(18,24,39,.6));
  border-bottom: 1px solid var(--border);
  z-index: 50;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
}
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--text); text-decoration: none; }
.brand-logo { width: 36px; height: 36px; object-fit: contain; }
.brand-name { font-weight: 700; letter-spacing: .2px; }
.nav { display: flex; align-items: center; gap: 18px; }
.nav a { color: var(--text); text-decoration: none; opacity: .9; }
.nav a:hover { opacity: 1; }

.hero { padding: 64px 0; background: radial-gradient(820px 340px at 80% 0%, rgba(125,93,237,.22), rgba(125,93,237,0)); }
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 32px;
  align-items: center;
}
.hero-copy h1 { font-size: 36px; line-height: 1.15; margin: 0 0 12px; }
.subtitle { color: var(--muted); margin: 0 0 18px; }
.hero-media { display: flex; align-items: center; justify-content: center; }
.hero-img { width: 100%; border-radius: 14px; border: 1px solid var(--border); box-shadow: 0 20px 40px rgba(0,0,0,.35); }

.promo { display: flex; gap: 16px; align-items: center; border: 1px solid var(--border); background: linear-gradient(180deg, var(--surface), var(--bg-2)); padding: 14px 16px; border-radius: 14px; }
.promo-badge { background: linear-gradient(90deg, var(--secondary), var(--primary)); color: #071014; font-weight: 800; padding: 8px 10px; border-radius: 10px; }
.promo-content { display: grid; }
.promo-content strong { font-size: 18px; }
.promo mark { background: none; color: var(--primary); font-weight: 700; }

.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 16px; }

.btn { --pad: 12px 18px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: var(--pad); border-radius: 12px; border: 1px solid var(--border); text-decoration: none; color: var(--text); cursor: pointer; transition: transform .06s ease, box-shadow .2s ease, opacity .2s; }
.btn:hover { transform: translateY(-1px); box-shadow: 0 10px 20px rgba(0,0,0,.25); }
.btn-small { --pad: 8px 12px; font-size: 14px; }
.btn-primary { background: linear-gradient(90deg, var(--secondary), var(--primary)); color: #091316; border: none; font-weight: 700; }
.btn-accent { background: linear-gradient(90deg, #38bdf8, #7d5ded); border: none; font-weight: 700; }
.btn-outline { background: transparent; }
.btn-ghost { background: rgba(255,255,255,.04); }

.section { padding: 56px 0; }
.section-alt { background: linear-gradient(180deg, rgba(23,32,55,.6), rgba(11,15,23,.6)); }
.section h2 { font-size: 28px; margin: 0 0 16px; }
.section p { color: var(--muted); }

.cards { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; margin-top: 12px; }
.card { border: 1px solid var(--border); border-radius: 14px; background: linear-gradient(180deg, var(--surface), var(--bg-2)); padding: 16px; }
.card h3 { margin: 0 0 10px; }

.steps { display: grid; grid-template-columns: 1fr; gap: 12px; }
.step { display: grid; grid-template-columns: 44px auto; gap: 14px; align-items: center; border: 1px solid var(--border); border-radius: 14px; padding: 12px 14px; background: linear-gradient(180deg, var(--surface), var(--bg-2)); }
.num { width: 44px; height: 44px; border-radius: 10px; background: linear-gradient(90deg, var(--secondary), var(--primary)); display: grid; place-items: center; color: #091316; font-weight: 800; }

details { border: 1px solid var(--border); border-radius: 14px; padding: 12px 14px; background: linear-gradient(180deg, var(--surface), var(--bg-2)); margin-top: 12px; }
summary { cursor: pointer; font-weight: 600; }

.site-footer { border-top: 1px solid var(--border); background: linear-gradient(180deg, rgba(18,24,39,.8), rgba(18,24,39,.4)); padding: 24px 0; }
.footer-grid { display: grid; grid-template-columns: 1fr auto; gap: 16px; align-items: center; }
.copyright { color: var(--muted); padding-top: 12px; }

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .nav { gap: 12px; }
  .brand-name { display: none; }
  .cards { grid-template-columns: 1fr; }
  .hero { padding: 40px 0; }
}