:root{
  --bg:#0a0c13; --surface:#121623; --surface2:#191e30; --border:#242b40;
  --text:#e9ecf6; --muted:#8b93ab; --brand:#7c5cff; --brand2:#ff4d8d;
  --max:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.muted{color:var(--muted)}

/* header */
header{position:sticky;top:0;z-index:20;background:rgba(10,12,19,.86);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700}
.logo i{width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,var(--brand),var(--brand2));display:block}
.nav-links{display:flex;gap:26px;align-items:center;font-size:14px;color:var(--muted)}
.nav-links a:hover{color:var(--text)}
.btn{display:inline-block;padding:11px 20px;border-radius:10px;font-weight:600;font-size:14px;border:1px solid var(--border);background:var(--surface2)}
.btn.primary{background:linear-gradient(135deg,var(--brand),var(--brand2));border:none;color:#fff}
.btn:hover{opacity:.92}

/* hero */
.hero{padding:96px 0 72px;text-align:center;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;inset:-40% 20% auto;height:520px;background:radial-gradient(closest-side,rgba(124,92,255,.28),transparent);filter:blur(10px)}
.hero .wrap{position:relative}
.pill{display:inline-block;padding:6px 14px;border-radius:999px;border:1px solid var(--border);background:var(--surface);font-size:12.5px;color:var(--muted);margin-bottom:22px}
h1{font-size:clamp(34px,5.4vw,58px);line-height:1.08;margin:0 0 20px;letter-spacing:-.02em;font-weight:700}
h1 span{background:linear-gradient(135deg,var(--brand),var(--brand2));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:18px;color:var(--muted);max-width:640px;margin:0 auto 32px}
.cta-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.note{margin-top:16px;font-size:13px;color:var(--muted)}

/* demo */
.demo{max-width:760px;margin:56px auto 0;background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:22px;text-align:left}
.chat{display:flex;flex-direction:column;gap:10px}
.msg{max-width:78%;padding:10px 14px;border-radius:14px;font-size:14px}
.msg.them{background:var(--surface2);align-self:flex-start;border-bottom-left-radius:4px}
.msg.us{background:linear-gradient(135deg,var(--brand),var(--brand2));align-self:flex-end;border-bottom-right-radius:4px}
.msg small{display:block;opacity:.7;font-size:11px;margin-bottom:3px}
.chips{display:flex;gap:8px;flex-wrap:wrap;align-self:flex-end}
.chip{border:1px solid var(--brand);color:#c9bcff;border-radius:999px;padding:6px 13px;font-size:13px}

/* sections */
section{padding:80px 0;border-top:1px solid var(--border)}
h2{font-size:clamp(26px,3.4vw,36px);margin:0 0 12px;letter-spacing:-.015em}
.sub{color:var(--muted);max-width:620px;margin:0 0 40px}
.grid{display:grid;gap:16px}
.g3{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.g2{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:24px}
.card h3{margin:0 0 8px;font-size:17px}
.card p{margin:0;color:var(--muted);font-size:14.5px}
.card .ico{width:36px;height:36px;border-radius:10px;background:var(--surface2);display:grid;place-items:center;margin-bottom:14px;font-size:17px}

.steps{counter-reset:s}
.step{display:flex;gap:18px;padding:22px 0;border-bottom:1px solid var(--border)}
.step:last-child{border-bottom:none}
.step .n{flex:none;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:14px;background:linear-gradient(135deg,var(--brand),var(--brand2))}
.step h3{margin:2px 0 5px;font-size:16px}
.step p{margin:0;color:var(--muted);font-size:14.5px}

.price{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:28px}
.price.featured{border-color:var(--brand);position:relative}
.price.featured::after{content:'mais escolhido';position:absolute;top:-11px;left:28px;background:linear-gradient(135deg,var(--brand),var(--brand2));font-size:11px;font-weight:700;padding:3px 11px;border-radius:999px}
.price b{display:block;font-size:15px;margin-bottom:6px}
.amount{font-size:38px;font-weight:700;letter-spacing:-.02em}
.amount small{font-size:14px;color:var(--muted);font-weight:400}
.price ul{list-style:none;padding:0;margin:20px 0;color:var(--muted);font-size:14px}
.price li{padding:6px 0 6px 24px;position:relative}
.price li::before{content:'✓';position:absolute;left:0;color:#4ade80}

details{border-bottom:1px solid var(--border);padding:18px 0}
details summary{cursor:pointer;font-weight:600;list-style:none}
details summary::-webkit-details-marker{display:none}
details summary::after{content:'+';float:right;color:var(--muted)}
details[open] summary::after{content:'−'}
details p{color:var(--muted);margin:12px 0 0;font-size:14.5px}

footer{border-top:1px solid var(--border);padding:44px 0;color:var(--muted);font-size:14px}
.foot{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
.foot a{display:block;padding:3px 0}
.foot a:hover{color:var(--text)}

/* páginas de texto */
.doc{padding:56px 0 80px;max-width:780px}
.doc h1{font-size:32px;text-align:left}
.doc h2{font-size:21px;margin:38px 0 10px}
.doc h3{font-size:16px;margin:24px 0 6px}
.doc p,.doc li{color:#c3c9db;font-size:15px}
.doc table{width:100%;border-collapse:collapse;margin:16px 0;font-size:14.5px}
.doc th,.doc td{border:1px solid var(--border);padding:10px 12px;text-align:left;vertical-align:top}
.doc th{background:var(--surface);color:var(--muted);font-size:13px}
.updated{color:var(--muted);font-size:13.5px}
.box{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:20px;margin:22px 0}
.field{display:block;margin-bottom:14px}
.field span{display:block;font-size:13px;color:var(--muted);margin-bottom:5px}
input,textarea,select{width:100%;background:var(--surface2);border:1px solid var(--border);color:var(--text);border-radius:9px;padding:10px 12px;font:inherit}
input:focus,textarea:focus{outline:none;border-color:var(--brand)}

@media(max-width:760px){.nav-links{display:none}.hero{padding:64px 0 48px}section{padding:56px 0}}