:root{--ink:#0B0F14;--blue:#2F6BFF;--grey:#4A5058;--bone:#F5F5F7;--white:#fff}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Inter","Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:#fff;-webkit-font-smoothing:antialiased;line-height:1.5}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
/* intro */
#intro{position:fixed;inset:0;z-index:999;background:var(--ink);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:22px;transition:opacity .8s ease-in-out,visibility .8s;cursor:pointer}
#intro canvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
#intro .lg,#intro .tg{position:relative;opacity:0;filter:blur(6px);transition:opacity 1s cubic-bezier(.45,0,.55,1),filter 1s cubic-bezier(.45,0,.55,1)}
#intro .lg{width:min(70vw,480px);height:auto}
#intro .tg{font-size:clamp(11px,2.6vw,15px);letter-spacing:.32em;text-transform:uppercase;color:#d1d5db;font-weight:500;text-align:center;padding-left:.32em;transition-duration:1.2s}
#intro.show-lg .lg,#intro.show-tg .tg{opacity:1;filter:none}
#intro .lg{shape-rendering:geometricPrecision;image-rendering:auto;transform:none}
#intro.out .lg,#intro.out .tg{opacity:0;filter:none;transition:opacity 1s ease-in-out}
#intro.done{opacity:0;visibility:hidden}
#intro.soft .lg{animation:softIn 1.6s .1s ease-in-out forwards}#intro.soft .tg{animation:softIn 1.2s .9s ease-in-out forwards}
@keyframes softIn{to{opacity:1;filter:blur(0)}}
/* nav */
nav.top{position:sticky;top:0;z-index:50;background:rgba(11,15,20,.72);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid rgba(255,255,255,.08)}
nav.top .wrap{display:flex;align-items:center;justify-content:space-between;height:56px}
nav.top img{height:22px;width:auto}
nav.top .links{display:flex;gap:28px;align-items:center;font-size:14px;color:#d1d5db}
nav.top .links a:hover{color:#fff}
.btn{display:inline-block;background:var(--blue);color:#fff;border-radius:980px;padding:12px 24px;font-weight:600;font-size:16px;transition:transform .2s,box-shadow .2s;border:0;cursor:pointer}
.btn:hover{transform:translateY(-1px);box-shadow:0 10px 30px rgba(47,107,255,.35)}
.btn.sm{padding:7px 16px;font-size:13px}
.btn.ghost{background:transparent;color:var(--blue);box-shadow:inset 0 0 0 1.5px var(--blue)}
@media(max-width:760px){nav.top .links a:not(.btn){display:none}}
/* hero */
.hero{position:relative;background:var(--ink);color:#fff;min-height:92vh;display:flex;align-items:center;overflow:hidden}
.hero picture img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.9}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(11,15,20,.92) 0%,rgba(11,15,20,.5) 55%,rgba(11,15,20,.1) 100%)}
.hero .wrap{position:relative;z-index:2;padding-top:80px;padding-bottom:80px}
.eyebrow{font-size:14px;letter-spacing:.14em;text-transform:uppercase;color:#7FA3FF;font-weight:600;margin-bottom:18px}
h1{font-size:clamp(44px,8vw,96px);line-height:1.02;letter-spacing:-.035em;font-weight:700;max-width:11ch}
h2{font-size:clamp(34px,5.5vw,64px);line-height:1.05;letter-spacing:-.03em;font-weight:700}
h3{font-size:22px;letter-spacing:-.01em;font-weight:650}
.lead{font-size:clamp(18px,2.2vw,24px);color:#b8bec7;max-width:34ch;margin:24px 0 36px;line-height:1.4}
.grad{background:linear-gradient(90deg,#fff,#8FB0FF 60%,var(--blue));-webkit-background-clip:text;background-clip:text;color:transparent}
.cta-row{display:flex;gap:14px;flex-wrap:wrap}
section{padding:clamp(80px,12vw,160px) 0}
.center{text-align:center}.center .lead,.center p.sub{margin-left:auto;margin-right:auto}
p.sub{font-size:clamp(18px,2vw,22px);color:var(--grey);max-width:40ch;margin-top:20px;line-height:1.45}
.dark{background:var(--ink);color:#fff}.dark p.sub{color:#9AA0A6}
.bone{background:var(--bone)}
/* math */
.math{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:64px}
.card{background:#fff;border-radius:28px;padding:36px;box-shadow:0 1px 0 rgba(0,0,0,.04),0 20px 60px rgba(11,15,20,.06)}
.dark .card{background:#141A22;box-shadow:inset 0 0 0 1px rgba(255,255,255,.06)}
.math .card .n{font-size:clamp(40px,5vw,60px);font-weight:700;letter-spacing:-.03em;color:var(--blue)}
.math .card p{color:var(--grey);margin-top:6px}
.calc{margin-top:28px;font-size:15px;color:var(--grey);text-align:center}
/* split */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:64px;align-items:center}
.split img{border-radius:28px;width:100%;height:auto;box-shadow:0 30px 80px rgba(11,15,20,.18)}
.steps{display:grid;gap:28px;margin-top:40px}
.step{display:flex;gap:20px}
.step b{flex:none;width:40px;height:40px;border-radius:50%;background:var(--blue);color:#fff;display:grid;place-items:center;font-size:16px}
.step p{color:var(--grey);margin-top:4px}
.dark .step p{color:#9AA0A6}
/* features */
.feat{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:64px;text-align:left}
.feat .card p{color:var(--grey);margin-top:10px}
.ico{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,#2F6BFF,#7FA3FF);margin-bottom:22px;display:grid;place-items:center;color:#fff;font-size:20px}
/* ava */
.ava{position:relative;overflow:hidden}
.wave{display:flex;gap:6px;justify-content:center;align-items:center;height:90px;margin:48px 0}
.wave span{width:6px;border-radius:6px;background:linear-gradient(var(--blue),#8FB0FF);animation:wv 1.2s ease-in-out infinite}
@keyframes wv{0%,100%{height:14px}50%{height:80px}}
.note{font-size:14px;color:#9AA0A6;margin-top:16px}
/* pilot */
.pilot{border-radius:36px;padding:clamp(40px,6vw,80px);background:radial-gradient(120% 140% at 100% 0%,#2F6BFF 0%,#1a3a8f 35%,#0B0F14 75%);color:#fff;display:grid;grid-template-columns:1.3fr 1fr;gap:48px;align-items:center}
.pilot ul{list-style:none;margin-top:24px;display:grid;gap:12px;color:#cfd6e4}
.pilot li::before{content:"✓";color:#8FB0FF;margin-right:10px;font-weight:700}
.price{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:24px;padding:32px;backdrop-filter:blur(10px)}
.price .big{font-size:56px;font-weight:700;letter-spacing:-.03em}
.price .big small{font-size:18px;font-weight:500;color:#b8bec7}
.price p{color:#b8bec7;font-size:15px;margin:6px 0 22px}
/* faq */
.faq{max-width:780px;margin:56px auto 0}
details{border-bottom:1px solid #e5e7eb;padding:24px 0}
summary{cursor:pointer;font-size:20px;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:16px}
summary::after{content:"+";color:var(--blue);font-size:26px;line-height:1;transition:transform .3s}
details[open] summary::after{transform:rotate(45deg)}
details p{color:var(--grey);margin-top:12px;font-size:17px}
/* form */
form{display:grid;gap:14px;max-width:560px;margin:48px auto 0;text-align:left}
input,textarea,select{width:100%;font:inherit;padding:16px 18px;border-radius:14px;border:1px solid #2a323d;background:#141A22;color:#fff}
input:focus,textarea:focus{outline:2px solid var(--blue);border-color:transparent}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
label.consent{font-size:13px;color:#9AA0A6;display:flex;gap:10px;align-items:flex-start}
label.consent input{width:auto;margin-top:3px}
footer{background:var(--ink);color:#9AA0A6;padding:56px 0;font-size:14px;border-top:1px solid rgba(255,255,255,.06)}
footer .wrap{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:center}
footer img{height:44px;width:auto}
footer a:hover{color:#fff}
/* reveal */
.reveal{opacity:0;transform:translateY(40px);transition:opacity 1s cubic-bezier(.2,.7,.2,1),transform 1s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}#intro{display:none}.wave span{animation:none;height:40px}}
/* doc pages */
.doc{max-width:760px;margin:0 auto;padding:100px 24px}
.doc h2{font-size:24px;letter-spacing:-.01em;margin:40px 0 10px}
.doc p,.doc li{color:#333a42;font-size:17px;margin-bottom:12px}
.doc ul{padding-left:22px}
.embed{border:2px dashed #c7d2fe;border-radius:28px;min-height:520px;display:grid;place-items:center;text-align:center;color:var(--grey);background:#fff;margin-top:48px;padding:24px}
@media(max-width:860px){.math,.feat{grid-template-columns:1fr}.split,.pilot{grid-template-columns:1fr;gap:40px}.row2{grid-template-columns:1fr}.hero{min-height:88vh}.hero::after{background:linear-gradient(180deg,rgba(11,15,20,.55),rgba(11,15,20,.92) 70%)}.split.rev .media{order:-1}}
@media(max-width:860px){.hero picture img{object-position:75% center;opacity:1}.hero::after{background:linear-gradient(180deg,rgba(11,15,20,.2),rgba(11,15,20,.85) 75%)}}
nav.top{background:rgba(11,15,20,.82)}