:root{
  --bg1:#0b1220; --bg2:#0d1426; --text:#e6e8ee; --muted:#a9b0c2; --border:#2a3143;
  --card:rgba(255,255,255,.05); --card-hover:rgba(255,255,255,.08); --accent:#ffffff;
  --brand1:#f43f5e; --brand2:#ef4444; --shadow:rgba(244,63,94,.25);
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Arial,"Apple Color Emoji","Segoe UI Emoji";
  color:var(--text); background:linear-gradient(180deg,var(--bg1),var(--bg2));}
a{color:inherit}
.container{max-width:1120px;padding:0 20px;margin:0 auto}
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.9rem 1.25rem;border-radius:16px;font-weight:600;text-decoration:none}
.btn-primary{background:var(--accent);color:#0b1220;box-shadow:0 6px 20px rgba(0,0,0,.25)}
.btn-outline{border:1px solid var(--border);background:transparent}
header{position:sticky;top:0;z-index:50;backdrop-filter:blur(8px);background:rgba(13,20,38,.6);border-bottom:1px solid var(--border)}
.nav{display:none;gap:24px;font-size:14px;color:#cfd5e6}
.brand{display:flex;align-items:center;gap:12px}
.brand-badge{height:32px;width:32px;border-radius:12px;background:linear-gradient(135deg,var(--brand2),var(--brand1));display:grid;place-items:center;font-weight:800;box-shadow:0 6px 18px var(--shadow)}
.header-row{height:64px;display:flex;align-items:center;justify-content:space-between}
.hero{position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:-20% -20% auto -20%;height:70%;background:radial-gradient(60% 40% at 50% 0%,rgba(244,63,94,.20),rgba(0,0,0,0));pointer-events:none}
.hero-grid{display:grid;gap:40px;grid-template-columns:1.1fr .9fr}
.h1{font-size:clamp(32px,5vw,56px);line-height:1.05;font-weight:800;letter-spacing:-.02em}
.lead{margin-top:16px;font-size:18px;color:var(--muted);max-width:56ch}
.hero-cta{margin-top:28px;display:flex;gap:12px;flex-wrap:wrap}
.hero-note{margin-top:10px;font-size:12px;color:#c1c7d6}
.preview{border:1px solid var(--border);background:var(--card);border-radius:22px;padding:16px;box-shadow:0 30px 60px rgba(0,0,0,.35)}
.preview-inner{aspect-ratio:16/10;border-radius:16px;background:linear-gradient(135deg,#121a2d,#0c1120);display:grid;place-items:center;overflow:hidden}
.badge{position:absolute;border:1px solid var(--border);background:var(--card);backdrop-filter:blur(6px);color:#cfd5e6;padding:8px 12px;border-radius:14px;font-size:12px}
section{padding:72px 0}
h2{font-size:clamp(22px,3vw,32px);margin:0;font-weight:800}
.muted{color:var(--muted)}
.features{display:grid;gap:20px;grid-template-columns:repeat(3,minmax(0,1fr));margin-top:28px}
.card{border:1px solid var(--border);background:var(--card);border-radius:20px;padding:18px;transition:background .2s ease, transform .2s ease}
.card:hover{background:var(--card-hover);transform:translateY(-1px)}
.icon{height:40px;width:40px;border-radius:12px;background:rgba(255,255,255,.08);display:grid;place-items:center}
.card h3{margin:12px 0 6px;font-size:18px}
.card p{margin:0;color:var(--muted);font-size:14px}
.cta{border:1px solid var(--border);background:linear-gradient(135deg,#0e1629,#0f1a33);border-radius:22px;padding:28px}
.cta-row{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.os-grid{margin-top:18px;display:grid;gap:12px;grid-template-columns:repeat(3,minmax(0,1fr))}
.os-tile{display:block;border:1px solid var(--border);background:var(--card);border-radius:16px;padding:16px;text-decoration:none;color:inherit}
.os-tile:hover{background:var(--card-hover)}
.os-head{display:flex;align-items:center;justify-content:space-between}
.os-head .left{display:flex;gap:10px;align-items:center}
.os-head img{height:20px;width:20px}
.list{margin-top:12px;padding-left:18px;color:#cfd5e6;font-size:12px}
.faq{display:grid;gap:12px;grid-template-columns:repeat(2,minmax(0,1fr));margin-top:18px}
footer{border-top:1px solid var(--border);padding:28px 0;color:#c1c7d6;font-size:12px}
.footer-row{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr}
  .features{grid-template-columns:1fr 1fr}
  .os-grid{grid-template-columns:1fr}
  .faq{grid-template-columns:1fr}
  .nav{display:none}
}
@media (min-width:961px){.nav{display:flex}}