*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#0a0a14; --surface:#11111e; --card:#161628; --border:#22223a;
  --text:#e8e8f0; --muted:#888; --accent:#9ea0ff; --accent2:#c4a5ff;
  --ok:#4ade80; --err:#ff7373; --warn:#f59e0b;
}
html,body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Helvetica Neue",sans-serif;
  background:var(--bg);color:var(--text);line-height:1.6;font-size:16px;
  scroll-behavior:smooth;-webkit-font-smoothing:antialiased;
}
.container{max-width:1100px;margin:0 auto;padding:0 24px}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--accent2)}
small{font-size:12px;color:var(--muted);display:block;margin-top:4px}

/* Header */
header{position:sticky;top:0;background:rgba(10,10,20,.85);backdrop-filter:blur(12px);z-index:100;border-bottom:1px solid var(--border)}
header nav{display:flex;justify-content:space-between;align-items:center;padding-top:14px;padding-bottom:14px}
.brand{font-size:18px;font-weight:600;color:var(--accent);display:inline-flex;align-items:center;gap:6px}
.brand span{color:var(--text)}
.nav-links{display:flex;gap:22px;align-items:center}
.nav-links a{color:var(--text);font-size:14px;font-weight:500}
.nav-links a:hover{color:var(--accent)}
.nav-links a.ghost{padding:7px 14px;border:1px solid var(--border);border-radius:6px}

/* Hero */
.hero{padding:90px 0 80px;text-align:center;background:radial-gradient(ellipse at center top,rgba(158,160,255,.08),transparent 60%)}
.badge{display:inline-block;padding:6px 14px;background:rgba(158,160,255,.1);border:1px solid rgba(158,160,255,.2);border-radius:999px;font-size:13px;color:var(--accent);margin-bottom:24px}
.hero h1{font-size:clamp(2.4rem,5.5vw,4rem);font-weight:700;letter-spacing:-.02em;line-height:1.1;margin-bottom:20px}
.grad{background:linear-gradient(135deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:clamp(1.1rem,1.5vw,1.25rem);color:#bbb;max-width:720px;margin:0 auto 36px;line-height:1.55}
.lead strong{color:var(--text)}
.cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-bottom:36px}
.btn{display:inline-block;padding:13px 26px;border-radius:8px;font-weight:600;cursor:pointer;font:inherit;text-decoration:none;border:0;transition:transform .15s,filter .15s}
.btn:hover{transform:translateY(-1px)}
.btn.primary{background:var(--accent);color:#0a0a14}
.btn.primary:hover{filter:brightness(1.1)}
.btn.ghost{background:transparent;color:var(--text);border:1px solid var(--border)}
.btn.ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn.big{padding:18px 36px;font-size:18px}
.proof{display:flex;gap:24px;justify-content:center;flex-wrap:wrap;color:var(--muted);font-size:14px;margin-top:16px}

/* Sections */
section{padding:60px 0;border-top:1px solid var(--border)}
section.hero{border:0}
section h2{font-size:clamp(1.8rem,3vw,2.4rem);font-weight:700;letter-spacing:-.01em;margin-bottom:14px;text-align:center}
section h2 + p,section h2 + .muted{text-align:center;color:var(--muted);max-width:640px;margin:0 auto 36px}
section h2 + p.center,.muted.center{text-align:center}

/* Cards */
.grid{display:grid;gap:18px;margin-top:30px}
.grid.features{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid.pricing{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.grid.templates{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:24px;transition:transform .2s,border-color .2s}
.card:hover{transform:translateY(-2px);border-color:var(--accent)}
.card .icon{font-size:28px;margin-bottom:12px}
.card h3{font-size:18px;font-weight:600;margin-bottom:10px}
.card p{color:#bbb;font-size:14.5px}
.card p strong{color:var(--text)}

/* Demo */
.demo-wrapper{max-width:740px;margin:30px auto 0}
.demo-suggestions{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px;justify-content:center}
.demo-suggestions button{
  background:var(--card);border:1px solid var(--border);color:var(--text);
  padding:8px 14px;border-radius:999px;cursor:pointer;font-size:13px;font:inherit;font-weight:500;
}
.demo-suggestions button:hover{border-color:var(--accent);color:var(--accent)}
.demo-chat{
  background:var(--card);border:1px solid var(--border);border-radius:12px 12px 0 0;
  padding:18px;height:340px;overflow-y:auto;display:flex;flex-direction:column;gap:12px;
}
.msg{padding:10px 14px;border-radius:10px;line-height:1.5;font-size:14.5px;max-width:88%;animation:fade .25s ease;white-space:pre-wrap;word-wrap:break-word}
.msg.user{align-self:flex-end;background:var(--accent);color:#0a0a14;border-bottom-right-radius:4px}
.msg.bot{align-self:flex-start;background:#1f1f33;color:var(--text);border-bottom-left-radius:4px}
.msg.err{align-self:flex-start;background:rgba(255,115,115,.15);color:var(--err)}
.msg small{display:inline;color:#aaa;margin-top:0}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.demo-form{display:flex;gap:8px;background:var(--card);border:1px solid var(--border);border-top:0;border-radius:0 0 12px 12px;padding:12px}
.demo-form input{
  flex:1;padding:10px 14px;background:#0d0d1c;border:1px solid var(--border);
  border-radius:8px;color:var(--text);font:inherit;outline:none;
}
.demo-form input:focus{border-color:var(--accent)}
.demo-form button{
  padding:10px 20px;background:var(--accent);color:#0a0a14;border:0;border-radius:8px;
  font:inherit;font-weight:600;cursor:pointer;
}
.demo-form button:disabled{opacity:.4;cursor:wait}

/* How it works */
.steps{display:grid;gap:24px;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));margin-top:30px}
.step{position:relative;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:24px}
.step .num{
  position:absolute;top:-14px;left:24px;background:var(--accent);color:#0a0a14;
  width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-weight:700;
}
.step h3{margin:8px 0 14px;font-size:17px}
.step pre{background:#0d0d1c;border:1px solid var(--border);border-radius:8px;padding:14px;overflow-x:auto;font-size:12.5px;line-height:1.5}
.step code{font-family:ui-monospace,"SF Mono",Menlo,monospace;color:#bbb}

/* Pricing */
.card.price{display:flex;flex-direction:column;position:relative;text-align:left}
.card.price h3{font-size:20px;margin-bottom:8px}
.card.price .amount{font-size:32px;font-weight:700;margin-bottom:18px}
.card.price .amount span{font-size:14px;font-weight:400;color:var(--muted)}
.card.price ul{list-style:none;padding:0;margin:0 0 24px;flex:1}
.card.price li{padding:7px 0;font-size:14px;color:#ccc;border-bottom:1px dashed rgba(255,255,255,.05)}
.card.price li:last-child{border:0}
.card.price li::before{content:"→ ";color:var(--accent)}
.card.price.highlight{border-color:var(--accent);background:linear-gradient(180deg,rgba(158,160,255,.08),transparent)}
.card.price .ribbon{
  position:absolute;top:-14px;right:18px;background:var(--accent);color:#0a0a14;
  padding:4px 12px;border-radius:6px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;
}

/* Code tabs */
.tabs{margin-top:20px}
.tab-bar{display:flex;gap:6px;border-bottom:1px solid var(--border);margin-bottom:0}
.tab-bar button{
  background:transparent;color:var(--muted);border:0;padding:10px 16px;font:inherit;font-size:13.5px;
  cursor:pointer;border-bottom:2px solid transparent;font-weight:500;
}
.tab-bar button.active{color:var(--accent);border-bottom-color:var(--accent)}
.tab-content{
  display:none;background:var(--card);border:1px solid var(--border);border-top:0;border-radius:0 0 10px 10px;
  padding:20px;overflow-x:auto;font-size:13px;line-height:1.6;
}
.tab-content.active{display:block}
.tab-content code{font-family:ui-monospace,Menlo,monospace;color:#ccc}

/* FAQ */
details{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:14px 20px;margin-bottom:8px;cursor:pointer}
details summary{font-weight:500;list-style:none;display:flex;justify-content:space-between;align-items:center}
details summary::-webkit-details-marker{display:none}
details summary::after{content:"+";color:var(--accent);font-size:20px;font-weight:300}
details[open] summary::after{content:"−"}
details p{margin-top:14px;color:#bbb;font-size:14.5px}
details code{background:#0d0d1c;padding:2px 6px;border-radius:3px;font-size:13px;color:var(--accent)}

/* CTA final */
.cta-final{text-align:center;padding:80px 0}
.cta-final h2{margin-bottom:14px}
.cta-final p{color:var(--muted);margin-bottom:30px;max-width:520px;margin-left:auto;margin-right:auto}

/* Footer */
footer{border-top:1px solid var(--border);padding:50px 0 30px;color:var(--muted);font-size:14px}
.foot-cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:30px}
footer .brand{font-size:18px;margin-bottom:8px}
footer h4{font-size:13px;text-transform:uppercase;letter-spacing:.05em;color:var(--text);margin-bottom:12px;font-weight:600}
footer a{display:block;color:var(--muted);font-size:14px;margin-bottom:6px}
footer a:hover{color:var(--accent)}
footer small{display:block;margin-top:14px;color:var(--muted);font-size:12px}

.muted{color:var(--muted)}
.small{font-size:13px}
.center{text-align:center}

@media (max-width:640px){
  .nav-links a:not(.ghost){display:none}
  section{padding:50px 0}
  .hero{padding:60px 0}
  .demo-suggestions{justify-content:flex-start}
}