:root{
  --bg:#0b0f17; --card:#121826; --line:#1e2636; --text:#e7ecf5; --muted:#9aa7bd; --acc:#7ec1ff;
  --ok:#65d38c; --warn:#ffb454; --err:#ff6b6b;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,"Helvetica Neue",Arial,sans-serif;line-height:1.6}
a{color:var(--acc);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1100px;margin:0 auto;padding:24px}
.btn{display:inline-block;padding:12px 18px;border-radius:12px;border:1px solid var(--line);background:#0f1524;color:var(--text);transition:transform .05s ease, box-shadow .2s;box-shadow:0 4px 24px rgba(0,0,0,.25)}
.btn:hover{transform:translateY(-1px)}
.btn.primary{background:linear-gradient(90deg,#4f9cff,#7ec1ff);color:#071124;border-color:transparent}
.badge{display:inline-flex;gap:6px;align-items:center;font-size:.85rem;padding:6px 10px;border-radius:999px;border:1px solid var(--line);background:#0f1524;color:var(--muted)}
.nav{display:flex;justify-content:space-between;align-items:center;padding:10px 0}
.nav .logo{display:flex;gap:10px;align-items:center;font-weight:700;font-size:1.05rem}
.nav .menu{display:flex;gap:16px;align-items:center}
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center;padding:34px 0}
.hero h1{font-size:2.2rem;line-height:1.2;margin:.2rem 0 1rem}
.hero p{color:var(--muted);margin:0 0 1.2rem}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.pricing .price{font-size:2rem;font-weight:800}
ul.check{list-style:none;padding:0;margin:0}
ul.check li{padding:8px 0;display:flex;gap:8px;align-items:flex-start}
ul.check .tick{width:18px;height:18px;border-radius:4px;background:linear-gradient(90deg,#65d38c,#9be7b9)}
.faq details{border:1px solid var(--line);background:var(--card);border-radius:12px;padding:12px 14px}
.faq details+details{margin-top:10px}
footer{margin-top:48px;padding:24px;border-top:1px solid var(--line);text-align:center;color:var(--muted)}
.img-card{border-radius:16px;overflow:hidden;border:1px solid var(--line)}
.img-card img{display:block;width:100%;height:auto}
/* Responsive */
@media (max-width: 900px){
  .hero{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .nav .menu{display:none}
}
/* Floating AI Assistant */
.ai-btn{position:fixed;right:18px;bottom:18px;border-radius:999px;padding:12px 16px;background:linear-gradient(90deg,#4f9cff,#7ec1ff);color:#071124;border:none;font-weight:700;box-shadow:0 10px 40px rgba(0,0,0,.35);cursor:pointer}
.ai-panel{position:fixed;right:18px;bottom:78px;width:360px;max-width:92vw;background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:hidden;display:none}
.ai-panel header{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;border-bottom:1px solid var(--line)}
.ai-panel .body{max-height:380px;overflow:auto;padding:12px 14px}
.ai-panel .msg{margin:8px 0;padding:10px 12px;border-radius:12px}
.ai-panel .msg.user{background:#0f1524}
.ai-panel .msg.bot{background:#0e1b30}
.ai-panel footer{display:flex;gap:8px;padding:12px;border-top:1px solid var(--line)}
.ai-panel input{flex:1;padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:#0b1324;color:var(--text)}
.ai-panel button{padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:#0f1524;color:var(--text);cursor:pointer}