:root{--bg:#04060d;--panel:#0a101b;--panel-hi:#0e1624;--line:#1e2a3c;--text:#e8edf6;--soft:#aab6c8;--muted:#7d8ba1;
  --cyan:#3ac7f8;--violet:#a86bff;--grad:linear-gradient(100deg,#3ac7f8,#a86bff);color-scheme:dark}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 Inter,'Segoe UI',system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--cyan)}
img{max-width:100%;display:block}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}

/* header */
.top{position:sticky;top:0;z-index:5;background:rgba(4,6,13,.82);backdrop-filter:blur(10px);border-bottom:1px solid #0f1724}
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);font-weight:800;letter-spacing:3px}
.logo img{width:30px;height:30px}
.nav{display:flex;gap:22px;align-items:center}
.nav a{color:var(--soft);text-decoration:none;font-size:14px}
.nav a:hover{color:#fff}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;border-radius:12px;font-weight:700;
  font-size:15px;text-decoration:none;border:1px solid transparent;transition:filter .15s,border-color .15s;white-space:nowrap}
.btn.primary{background:var(--grad);color:#04060d;box-shadow:0 6px 30px rgba(90,140,255,.28)}
.btn.primary:hover{filter:brightness(1.08)}
.btn.ghost{border-color:#33415a;color:var(--text);background:#0b1220}
.btn.ghost:hover{border-color:#5a6c8c}
.btn.small{padding:8px 14px;font-size:13px;border-radius:10px}

/* hero */
.hero{position:relative;padding:56px 0 30px;text-align:center;overflow:hidden}
.hero::before{content:'';position:absolute;inset:-20% -10% auto;height:520px;background:radial-gradient(ellipse at 50% 30%,rgba(120,80,255,.22),transparent 60%);pointer-events:none}
.badge{display:inline-block;font-size:12px;letter-spacing:1.5px;text-transform:uppercase;color:#bfa8ff;border:1px solid #3d2f66;
  background:#120d24;border-radius:30px;padding:6px 14px;margin-bottom:18px}
.hero h1{font-size:clamp(34px,6vw,60px);line-height:1.08;letter-spacing:-1.5px;margin:0 auto 16px;max-width:820px}
.hero h1 span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:clamp(17px,2.2vw,20px);color:var(--soft);max-width:680px;margin:0 auto 28px}
.cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.note{font-size:13px;color:var(--muted);margin-top:14px}
.banner{width:100%;height:auto;margin:44px auto 0;border-radius:20px;overflow:hidden;border:1px solid var(--line);box-shadow:0 30px 90px rgba(0,0,0,.55);max-width:980px}

/* sections */
section{padding:72px 0}
.kicker{font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--cyan);font-weight:800;margin:0 0 10px}
h2{font-size:clamp(26px,4vw,38px);letter-spacing:-.8px;line-height:1.15;margin:0 0 14px}
.sub{color:var(--soft);max-width:640px;margin:0 0 34px}
.grid{display:grid;gap:16px}
.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}
.card{background:linear-gradient(160deg,var(--panel-hi),var(--panel));border:1px solid var(--line);border-radius:16px;padding:22px}
.card h3{margin:10px 0 6px;font-size:18px}
.card p{margin:0;color:var(--soft);font-size:15px}
.icon{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;font-size:21px;background:#111a2b;border:1px solid #26344d}

/* example answer */
.demo{display:grid;grid-template-columns:1.1fr 1fr;gap:28px;align-items:center}
.chat{background:#070c16;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:0 20px 70px rgba(0,0,0,.4)}
.chat .label{font-size:11px;letter-spacing:1.4px;color:var(--muted);text-transform:uppercase;margin-bottom:10px}
.q{background:#111a2b;border:1px solid #26344d;border-radius:12px;padding:12px 14px;font-size:14px;margin-bottom:12px}
.a{border:1px solid #2c2450;background:linear-gradient(160deg,#120f24,#0b0f1b);border-radius:12px;padding:14px}
.a strong{display:block;margin-bottom:6px}
.a ul{margin:8px 0 10px;padding-left:18px;color:var(--soft);font-size:14px}
.a .src{font-size:12px;color:var(--cyan)}
.tick{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.tick li{padding-left:30px;position:relative;color:var(--soft)}
.tick li::before{content:'✓';position:absolute;left:0;top:0;color:#5ee0b0;font-weight:900}
.tick b{color:var(--text)}

/* steps */
.steps{counter-reset:s}
.step{position:relative;padding-left:58px}
.step::before{counter-increment:s;content:counter(s);position:absolute;left:0;top:0;width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;font-weight:900;background:var(--grad);color:#04060d}

/* AI table */
.ai{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.ai .card.best{border-color:#5b4aa8;box-shadow:0 0 0 1px #5b4aa8 inset,0 16px 50px rgba(110,80,255,.15)}
.tag{display:inline-block;font-size:11px;font-weight:800;letter-spacing:1px;text-transform:uppercase;border-radius:20px;padding:4px 10px;background:#1b1436;color:#cbb6ff;border:1px solid #3e2f73}
.tag.paid{background:#101a26;color:#9fb3cc;border-color:#2a3a50}

/* faq */
details{border:1px solid var(--line);border-radius:14px;padding:16px 18px;background:var(--panel);margin-bottom:10px}
summary{cursor:pointer;font-weight:700;list-style:none}
summary::-webkit-details-marker{display:none}
summary::after{content:'+';float:right;color:var(--muted);font-weight:400}
details[open] summary::after{content:'–'}
details p{color:var(--soft);margin:10px 0 0}

/* final cta */
.final{text-align:center;background:radial-gradient(ellipse at 50% 0%,rgba(120,80,255,.18),transparent 65%);border-top:1px solid #0f1724}

/* footer */
footer{border-top:1px solid #0f1724;padding:30px 0 40px;color:var(--muted);font-size:14px}
footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
footer a{color:var(--soft);text-decoration:none;margin-right:18px}
footer a:hover{color:#fff}

/* legal pages */
.legal{padding:48px 0 80px}
.legal .wrap{max-width:760px}
.legal h1{font-size:clamp(30px,5vw,42px);letter-spacing:-1px;margin:0 0 6px}
.legal .updated{color:var(--muted);margin:0 0 30px}
.legal h2{font-size:22px;margin:34px 0 8px}
.legal p,.legal li{color:var(--soft)}
.legal table{width:100%;border-collapse:collapse;margin:12px 0;font-size:15px}
.legal th,.legal td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.legal th{background:var(--panel-hi);color:var(--text)}
.legal .box{border:1px solid #3e2f73;background:#110d22;border-radius:12px;padding:14px 16px;color:var(--soft)}

@media (max-width:860px){
  .grid.three,.ai{grid-template-columns:1fr}
  .grid.two,.demo{grid-template-columns:1fr}
  .nav a.hide-sm{display:none}
  section{padding:56px 0}
}
@media (max-width:520px){
  .nav{gap:12px}
  .cta .btn{width:100%}
  .legal table{display:block;overflow-x:auto}
}