:root{
  --bg:#0b1220;
  --card:#111b2e;
  --text:#edf3ff;
  --muted:#9fb0c9;
  --line:#21314d;
  --accent:#4f8cff;
  --accent2:#79a6ff;
  --light:#f6f8fc;
  --dark:#101827;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--dark);background:#fff}
a{text-decoration:none;color:inherit}
.container{width:min(1120px,calc(100% - 32px));margin:0 auto}
.topbar{position:sticky;top:0;z-index:20;background:rgba(11,18,32,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.06)}
.nav{height:68px;display:flex;align-items:center;justify-content:space-between;color:#fff}
.brand{font-weight:800;letter-spacing:.08em}
nav{display:flex;gap:24px;color:#c7d3e8;font-size:14px}
.hero{background:radial-gradient(circle at 75% 15%,#19366f 0,#0b1220 45%);color:var(--text);padding:82px 0}
.hero-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:56px;align-items:center}
.eyebrow{display:inline-block;text-transform:uppercase;letter-spacing:.12em;font-size:12px;font-weight:800;color:#4f8cff;margin-bottom:14px}
.hero .eyebrow{color:#8eb4ff}
h1{font-size:clamp(42px,6vw,72px);line-height:1.02;margin:0 0 22px;letter-spacing:-.04em}
h2{font-size:clamp(30px,4vw,46px);line-height:1.1;margin:0 0 18px;letter-spacing:-.03em}
h3{margin:8px 0 8px}
.lead{font-size:20px;line-height:1.6;color:#c1cce0;max-width:720px}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
.btn{border:0;border-radius:12px;padding:14px 20px;font-weight:800;font-size:15px;display:inline-flex;align-items:center;justify-content:center;cursor:pointer}
.btn.primary{background:var(--accent);color:#fff}
.btn.secondary{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.14)}
.btn[disabled]{opacity:.55;cursor:not-allowed}
.btn.full{width:100%}
.note{font-size:13px;color:#8191ab;margin-top:16px}
.course-card{background:rgba(17,27,46,.92);border:1px solid rgba(255,255,255,.1);border-radius:24px;padding:28px;box-shadow:0 30px 80px rgba(0,0,0,.24)}
.course-card h2{font-size:28px}
.badge{display:inline-block;background:rgba(79,140,255,.15);color:#a9c4ff;padding:8px 10px;border-radius:999px;font-size:12px;font-weight:800;margin-bottom:18px}
.price{font-size:44px;font-weight:900;letter-spacing:-.04em}
.course-card ul{padding-left:20px;color:#c5d0e3;line-height:1.9;margin:18px 0 24px}
.section{padding:86px 0}
.section.muted{background:var(--light)}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:34px}
.feature{border:1px solid #e2e8f2;border-radius:18px;padding:24px;background:#fff}
.feature strong{color:var(--accent);font-size:13px}
.feature p{color:#65738a;line-height:1.6}
.steps{list-style:none;padding:0;margin:36px 0 0;display:grid;gap:14px}
.steps li{display:flex;gap:18px;align-items:flex-start;background:#fff;border:1px solid #e4e9f2;border-radius:16px;padding:20px}
.steps li>span{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:#eaf1ff;color:#2f6edc;font-weight:900;flex:0 0 36px}
.steps p{margin:0;color:#66758e}
.price-box{display:flex;justify-content:space-between;gap:24px;align-items:center;border:1px solid #e0e7f2;border-radius:24px;padding:34px}
.price-box p{color:#67768e;max-width:660px}
.price-side{text-align:right}
footer{background:#0b1220;color:#8fa0ba;padding:28px 0}
.footer{display:flex;justify-content:space-between;gap:20px;font-size:14px}
@media(max-width:850px){
  nav{display:none}
  .hero-grid{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr 1fr}
  .price-box{align-items:flex-start;flex-direction:column}
  .price-side{text-align:left}
}
@media(max-width:560px){
  .hero{padding:56px 0}
  .cards{grid-template-columns:1fr}
  .footer{flex-direction:column}
}


.telegram-label{color:#c1cce0;max-width:680px;line-height:1.6;margin-top:28px}
.telegram-box{margin-top:18px;min-height:48px}
.login-ok{margin-top:26px;padding:14px 16px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.06);border-radius:12px;color:#dce6f7;display:inline-block}
.small-muted{color:#899ab5;font-size:13px;line-height:1.5}
.account-page{background:#f6f8fc;min-height:100vh}
.account-wrap{max-width:900px}
.account-title{font-size:46px;color:#101827;margin-bottom:12px}
.account-sub{font-size:18px;color:#66758e}
.empty-card{margin-top:34px;border:1px solid #e0e7f2;border-radius:22px;background:#fff;padding:34px}
.empty-card h2{font-size:28px}
.empty-card p{color:#66758e;margin-bottom:24px}
.account-courses{display:grid;gap:16px;margin-top:32px}