:root{
  --ink:#0a0a0b; --ink2:#141416; --paper:#f6f6f4; --card:#fff;
  --line:#e2e2de; --line-d:#2a2a2e; --txt:#16161a; --muted:#5a5a62; --muted-d:#a6a8b0; --glow:#9fd0ff;
  --font:'Sora',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{font-family:var(--font);background:var(--paper);color:var(--txt);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
:focus-visible{outline:2px solid var(--glow);outline-offset:3px}

/* nav */
.nav{position:fixed;inset:0 0 auto 0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:16px clamp(20px,5vw,64px);color:#fff;transition:background .3s,backdrop-filter .3s}
.nav.solid{background:rgba(10,10,11,.82);backdrop-filter:blur(12px)}
.brand{display:flex;align-items:center;gap:10px;letter-spacing:.14em;font-size:15px;font-weight:500}
.brand b{font-weight:300}
.logo-mark{width:38px;height:34px;color:#fff}
.nav-links{display:flex;gap:28px;font-size:13px}
.nav-links a{opacity:.85}.nav-links a:hover{opacity:1}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 26px;border-radius:999px;font:500 13px var(--font);border:1px solid transparent;cursor:pointer;transition:transform .15s,background .2s}
.btn:active{transform:scale(.97)}
.btn-light{background:#fff;color:var(--ink)}
.btn-dark{background:var(--ink);color:#fff;width:100%}
.btn-outline{border-color:#bdbdb8;background:#fff;color:var(--ink);width:100%}
.btn-outline:hover{border-color:var(--ink)}
.btn-ghost{color:#fff;border-color:var(--line-d)}
.btn-ghost:hover{border-color:#fff}

/* sections */
section{padding:clamp(72px,10vw,120px) clamp(20px,5vw,64px)}
.dark{background:var(--ink);color:#fff}
.light{background:var(--paper)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,6vw,96px);max-width:1180px;margin:0 auto;align-items:start}
.split.head{align-items:end;margin-bottom:56px}
.eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:18px}
.dark .eyebrow{color:var(--muted-d)}
h1,h2{font-weight:400;letter-spacing:-.02em;line-height:1.15}
h1{font-size:clamp(36px,5.2vw,60px)}
h2{font-size:clamp(28px,3.6vw,40px);margin-bottom:20px}
h3{font-weight:500;font-size:16px}
.muted{color:var(--muted)}.dark .muted{color:var(--muted-d)}
.small{font-size:13px}

/* hero */
.hero{min-height:100vh;display:grid;grid-template-columns:1fr 1.1fr;align-items:center;gap:24px;padding-top:120px;overflow:hidden;position:relative}
.hero-text{max-width:460px;margin-left:max(0px,calc((100vw - 1180px)/2))}
.hero h1{margin-bottom:22px}
.lead{color:#d2d4da;font-size:15px;margin-bottom:34px}
.actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-art{width:100%;height:auto;max-height:80vh}
.hero-art .traces path{stroke-dasharray:1;stroke-dashoffset:1;animation:draw 2.4s .4s ease forwards}
.hero-art .traces path:nth-child(2){animation-delay:.7s}.hero-art .traces path:nth-child(3){animation-delay:1s}
.hero-art .traces path:nth-child(4){animation-delay:1.2s}.hero-art .traces path:nth-child(5){animation-delay:1.4s}.hero-art .traces path:nth-child(6){animation-delay:1.6s}
.hero-art .nodes circle{opacity:0;animation:glow 1s 2.6s forwards;filter:drop-shadow(0 0 6px var(--glow))}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes glow{to{opacity:1}}

/* perks */
.perks{display:grid;grid-template-columns:1fr 1fr;gap:36px 28px}
.perks h3{margin-bottom:6px;padding-top:14px;border-top:1px solid var(--txt)}
.perks p{font-size:13px;color:var(--muted)}

/* steps */
.steps{margin-top:36px;display:grid;gap:6px}
.steps li{display:flex;gap:16px;align-items:center;padding:14px 0;font-size:15px;color:#6b6d75;transition:color .4s}
.steps li span{flex:none;width:36px;height:36px;border-radius:50%;border:1px solid var(--line-d);display:grid;place-items:center;font-size:13px;transition:.4s}
.steps li.on{color:#fff}
.steps li.on span{background:#fff;color:var(--ink);border-color:#fff;box-shadow:0 0 18px rgba(159,208,255,.5)}
.device{border:1px solid var(--line-d);border-radius:18px;padding:14px;background:var(--ink2);position:sticky;top:110px}
.screen{border-radius:10px;min-height:300px;padding:28px;background:linear-gradient(160deg,#1c2026,#0a0a0b);display:flex;flex-direction:column;justify-content:flex-end;gap:14px}
.screen small{letter-spacing:.2em;color:var(--muted-d);font-size:11px}
.screen strong{font-weight:400;font-size:clamp(22px,3vw,30px);line-height:1.2}
.bar{height:3px;background:var(--line-d);border-radius:3px;overflow:hidden}
.bar i{display:block;height:100%;width:25%;background:var(--glow);transition:width .5s}

/* plans */
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:22px;max-width:1180px;margin:0 auto;align-items:stretch}
.plan{position:relative;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:30px 26px;display:flex;flex-direction:column;gap:14px}
.plan.featured{border:2px solid var(--ink);transform:translateY(-10px)}
.badge{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--ink);color:#fff;font-size:11px;letter-spacing:.08em;padding:4px 14px;border-radius:999px;white-space:nowrap}
.price{font-size:38px;font-weight:500;letter-spacing:-.02em}
.price small{font-size:14px;font-weight:400;color:var(--muted);margin-left:4px}
.plan ul{display:grid;gap:10px;font-size:13.5px;flex:1;margin:6px 0 14px}
.plan li{padding-left:24px;position:relative}
.plan li::before{content:"";position:absolute;left:3px;top:.45em;width:9px;height:5px;border-left:1.6px solid var(--ink);border-bottom:1.6px solid var(--ink);transform:rotate(-45deg)}

/* quotes */
.quotes{position:relative;border:1px solid var(--line-d);border-radius:14px;padding:34px;min-height:220px}
.quotes blockquote{display:none}
.quotes blockquote.on{display:block;animation:fade .5s}
.quotes p{font-size:16px;margin-bottom:20px}
.quotes footer span{color:var(--muted-d);font-size:13px}
.q-nav{position:absolute;right:20px;bottom:18px;display:flex;gap:8px}
.q-nav button{width:34px;height:34px;border-radius:50%;border:1px solid var(--line-d);background:none;color:#fff;font-size:18px;cursor:pointer}
.q-nav button:hover{border-color:#fff}
@keyframes fade{from{opacity:0}to{opacity:1}}

/* cta + footer */
.cta{text-align:center;display:grid;justify-items:center;gap:8px;border-top:1px solid var(--line-d)}
.cta .btn{margin-top:18px}
.footer{background:var(--ink);color:#fff;display:flex;flex-wrap:wrap;gap:20px 40px;align-items:center;justify-content:space-between;padding:36px clamp(20px,5vw,64px);border-top:1px solid var(--line-d)}
.footer .contact{display:flex;gap:18px;font-size:13px;color:var(--muted-d);flex-wrap:wrap}
.footer .contact a:hover{color:#fff}
.copy{width:100%;font-size:12px;color:#6b6d75}

/* progresso da subida */
.rail{position:fixed;right:14px;top:50%;height:36vh;width:2px;background:rgba(127,127,127,.25);transform:translateY(-50%);z-index:40;border-radius:2px}
.rail-fill{position:absolute;bottom:0;left:0;width:100%;height:var(--p,0%);background:var(--glow)}
.rail-dot{position:absolute;left:-3px;bottom:var(--p,0%);width:8px;height:8px;border-radius:50%;background:#fff;box-shadow:0 0 10px var(--glow);transform:translateY(50%)}

/* checkout / obrigado */
.page-narrow{max-width:640px;margin:0 auto;padding:130px 20px 80px}
.page-narrow h1{font-size:clamp(28px,4vw,38px);margin-bottom:10px}
.summary{display:flex;justify-content:space-between;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px 22px;margin:22px 0 28px}
.summary b{font-size:20px;font-weight:500}
.form{display:grid;gap:16px}
.form label{display:grid;gap:6px;font-size:13px;font-weight:500}
.form input,.form textarea,.form select{font:400 15px var(--font);padding:12px 14px;border:1px solid #cfcfca;border-radius:10px;background:#fff;color:var(--txt)}
.form input:focus,.form textarea:focus,.form select:focus{border-color:var(--ink);outline:none}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.alert{padding:12px 16px;border-radius:10px;background:#fdecea;color:#8a1c12;font-size:14px;margin-bottom:16px}
.ok{background:#e8f5ec;color:#14532d}
.pix{background:var(--ink);color:#fff;border-radius:12px;padding:22px;margin:22px 0;word-break:break-all}
.pix code{display:block;margin:10px 0;font-size:15px;color:var(--glow)}
.pix button{margin-top:6px}
body.nav-light .nav{background:var(--ink)}

@media (max-width:860px){
  .nav-links{display:none}
  .split,.hero{grid-template-columns:1fr}
  .hero{padding-top:110px}.hero-text{margin-left:0}
  .perks,.row2{grid-template-columns:1fr}
  .device{position:static}
  .plan.featured{transform:none}
  .rail{display:none}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .hero-art .traces path{animation:none;stroke-dashoffset:0}
  .hero-art .nodes circle{animation:none;opacity:1}
  .quotes blockquote.on{animation:none}
}