:root{
  --bg:#05040b; --bg2:#0b0918; --card:rgba(255,255,255,.045); --line:rgba(255,255,255,.09);
  --ink:#f4f1ff; --mut:#a8a3c4; --v:#7c4dff; --v2:#6E2BFF; --t:#00E5C7; --p:#FF3DA1; --g:#FFD63D; --r:#ff5a6a;
  --grad:linear-gradient(100deg,#00E5C7 0%,#7c4dff 45%,#FF3DA1 100%);
  --radius:22px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{margin:0;overflow-x:hidden;background:var(--bg);color:var(--ink);font:17px/1.6 Inter,-apple-system,system-ui,sans-serif;-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:Inter,-apple-system,system-ui,sans-serif;font-weight:800;letter-spacing:-.035em;line-height:1.05;margin:0 0 .45em}
h1{font-size:clamp(38px,5vw,66px)} h2{font-size:clamp(30px,4.6vw,54px)} h3{font-size:22px;letter-spacing:-.02em}
p{margin:0 0 1em} a{color:var(--t)}
.wrap{max-width:1180px;margin:0 auto;padding:0 16px}
.grad{background:var(--grad);background-size:200% auto;-webkit-background-clip:text;background-clip:text;color:transparent;animation:gradmove 6s linear infinite}
@keyframes gradmove{to{background-position:200% center}}
.mut{color:var(--mut)}
.testbar{background:#d62828;color:#fff;text-align:center;font-size:13px;font-weight:700;padding:6px 10px;display:none;position:relative;z-index:60}
.testbar.on{display:block}

/* nav */
.nav{position:fixed;top:12px;transition:top .2s;left:0;right:0;z-index:50;pointer-events:none}
.nav .in{pointer-events:auto;max-width:1180px;margin:0 auto;padding:10px 10px 10px 18px;display:flex;justify-content:space-between;align-items:center;border:1px solid var(--line);border-radius:18px;background:rgba(10,8,22,.55);backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%);margin-left:16px;margin-right:16px}
@media(min-width:1212px){.nav .in{margin:0 auto}}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.02em;color:var(--ink);text-decoration:none;font-size:16px}
.brand i{width:28px;height:28px;border-radius:9px;background:var(--grad);display:grid;place-items:center;font-style:normal;font-size:15px;box-shadow:0 0 20px rgba(124,77,255,.6)}

/* bottoni */
.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:10px;border:0;cursor:pointer;color:#fff;font:800 17px Inter,sans-serif;letter-spacing:-.01em;padding:17px 28px;border-radius:16px;text-decoration:none;background:linear-gradient(100deg,#6E2BFF,#a03dff 55%,#FF3DA1);box-shadow:0 10px 40px rgba(124,77,255,.45),inset 0 1px 0 rgba(255,255,255,.25);overflow:hidden;transition:transform .2s,box-shadow .2s}
.btn:after{content:"";position:absolute;inset:0;background:linear-gradient(110deg,transparent 30%,rgba(255,255,255,.35) 50%,transparent 70%);transform:translateX(-120%);animation:shine 3.2s ease-in-out infinite}
@keyframes shine{60%,100%{transform:translateX(120%)}}
.btn:hover{transform:translateY(-2px) scale(1.02);box-shadow:0 16px 50px rgba(124,77,255,.6)}
.btn:disabled{opacity:.6;cursor:wait;transform:none}
.btn.sm{padding:11px 18px;font-size:14px;border-radius:12px}
.btn.big{width:100%;font-size:20px;padding:21px}
.btn.ghost{background:transparent;box-shadow:none;color:var(--mut);font-weight:600;font-size:15px;text-decoration:underline}
.btn.ghost:after{display:none}
.micro{font-size:13px;color:var(--mut);margin-top:12px}
.notice{background:rgba(255,90,106,.12);border:1px solid rgba(255,90,106,.4);color:#ffc2c8;border-radius:12px;padding:12px 14px;margin:14px 0;font-size:15px;display:none}
.notice.on{display:block}

/* hero */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;padding:120px 0 70px;overflow:hidden;isolation:isolate}
.hero-bg{position:absolute;inset:-4%;z-index:-3;background:url(/img/hero-neural.webp) center/cover no-repeat;animation:kenburns 24s ease-in-out infinite alternate;opacity:.75}
@keyframes kenburns{to{transform:scale(1.12) translate(-2%,1%)}}
#net{position:absolute;inset:0;z-index:-2;width:100%;height:100%}
.hero:after{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(80% 60% at 20% 50%,rgba(5,4,11,.92),rgba(5,4,11,.35) 70%),linear-gradient(to bottom,transparent 70%,var(--bg))}
.hero .grid{display:grid;grid-template-columns:1.15fr .85fr;gap:30px;align-items:center}
.pill{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(0,229,199,.35);background:rgba(0,229,199,.08);color:#9ff5e8;font-weight:700;font-size:13px;padding:7px 13px;border-radius:99px;margin-bottom:22px}
.pill b{width:8px;height:8px;border-radius:50%;background:var(--t);box-shadow:0 0 0 0 var(--t);animation:ping 2s infinite}
@keyframes ping{70%{box-shadow:0 0 0 9px transparent}100%{box-shadow:0 0 0 0 transparent}}
.lead{font-size:clamp(17px,1.6vw,20px);color:#cfcbe6;max-width:560px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:28px}
.facts{display:flex;gap:26px;margin-top:34px;flex-wrap:wrap}
.facts div{font-size:13px;color:var(--mut)} .facts b{display:block;font-size:30px;font-weight:800;color:var(--ink);letter-spacing:-.03em}

/* libri 3D */
.books{position:relative;height:460px;perspective:1400px}
.books .stage{position:absolute;inset:0;transform-style:preserve-3d;transition:transform .25s ease-out}
.bk{position:absolute;width:220px;aspect-ratio:464/600;border-radius:4px 10px 10px 4px;background:#111 center/cover;box-shadow:0 30px 60px rgba(0,0,0,.6),0 0 60px var(--glow,rgba(124,77,255,.35));transform-style:preserve-3d;animation:float 6s ease-in-out infinite}
.bk:before{content:"";position:absolute;inset:0;border-radius:inherit;background:linear-gradient(100deg,rgba(255,255,255,.22),transparent 30%,transparent 70%,rgba(255,255,255,.08));pointer-events:none}
.bk:after{content:"";position:absolute;left:0;top:0;bottom:0;width:10px;background:linear-gradient(90deg,rgba(0,0,0,.45),transparent);border-radius:4px 0 0 4px}
.bk1{left:-4%;top:100px;transform:translateZ(-60px) rotateY(18deg) rotateZ(-6deg);--glow:rgba(217,119,87,.45);animation-delay:-2s}
.bk2{left:29%;top:20px;transform:translateZ(40px);z-index:2;--glow:rgba(16,163,127,.55)}
.bk3{left:62%;top:110px;transform:translateZ(-60px) rotateY(-18deg) rotateZ(6deg);--glow:rgba(47,111,237,.5);animation-delay:-4s}
@keyframes float{50%{margin-top:-14px}}
.orbit{position:absolute;left:50%;top:52%;width:520px;height:520px;margin:-260px 0 0 -260px;border-radius:50%;border:1px dashed rgba(124,77,255,.25);animation:spin 40s linear infinite}
.orbit:before,.orbit:after{content:"";position:absolute;width:10px;height:10px;border-radius:50%;background:var(--t);box-shadow:0 0 18px var(--t);top:-5px;left:50%}
.orbit:after{background:var(--p);box-shadow:0 0 18px var(--p);top:auto;bottom:-5px}
@keyframes spin{to{transform:rotate(360deg)}}

/* marquee */
.marquee{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(255,255,255,.02);overflow:hidden;padding:16px 0;-webkit-mask:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);mask:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent)}
.marquee .track{display:flex;gap:44px;width:max-content;animation:marq 38s linear infinite;font-weight:700;color:#cfcbe6;white-space:nowrap}
.marquee span:before{content:"✦";color:var(--t);margin-right:14px}
@keyframes marq{to{transform:translateX(-50%)}}

section{position:relative;padding:110px 0}
.kicker{display:inline-block;font-size:13px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--t);margin-bottom:14px}
.sec-head{max-width:720px;margin-bottom:46px}

/* demo terminale */
.demo{display:grid;grid-template-columns:.85fr 1.15fr;gap:40px;align-items:center}
.tabs{display:flex;gap:8px;margin:22px 0;flex-wrap:wrap}
.tab{border:1px solid var(--line);background:var(--card);color:var(--mut);padding:9px 16px;border-radius:99px;cursor:pointer;font:700 14px Inter,sans-serif;transition:.2s}
.tab.on{color:#fff;border-color:transparent;background:linear-gradient(100deg,rgba(110,43,255,.7),rgba(255,61,161,.6));box-shadow:0 0 24px rgba(124,77,255,.4)}
.term{border-radius:20px;border:1px solid var(--line);background:linear-gradient(180deg,rgba(20,16,40,.9),rgba(10,8,22,.95));box-shadow:0 40px 80px rgba(0,0,0,.5),0 0 0 1px rgba(124,77,255,.15),0 0 80px rgba(124,77,255,.18);overflow:hidden}
.term .bar{display:flex;align-items:center;gap:7px;padding:13px 16px;border-bottom:1px solid var(--line);font-size:12px;color:var(--mut)}
.term .bar i{width:11px;height:11px;border-radius:50%;background:#ff5f57}.term .bar i:nth-child(2){background:#febc2e}.term .bar i:nth-child(3){background:#28c840}
.term .bar span{margin-left:auto}
.term .body{padding:22px;min-height:330px;font-size:15px}
.msg{padding:14px 16px;border-radius:14px;margin-bottom:14px;max-width:92%}
.msg.you{background:rgba(124,77,255,.18);border:1px solid rgba(124,77,255,.35);margin-left:auto}
.msg.ai{background:rgba(255,255,255,.04);border:1px solid var(--line);white-space:pre-wrap}
.msg small{display:block;font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--mut);margin-bottom:4px}
.caret{display:inline-block;width:8px;height:1.1em;background:var(--t);vertical-align:-3px;margin-left:2px;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

/* libri card */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.bcard{position:relative;border:1px solid var(--line);border-radius:var(--radius);padding:26px;background:var(--card);overflow:hidden;transition:transform .3s,border-color .3s;transform-style:preserve-3d}
.bcard:before{content:"";position:absolute;inset:-1px;border-radius:inherit;padding:1px;background:linear-gradient(140deg,var(--c),transparent 40%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:.8}
.bcard:after{content:"";position:absolute;width:260px;height:260px;border-radius:50%;background:var(--c);filter:blur(90px);opacity:.18;top:-80px;right:-80px}
.bcard img{width:120px;border-radius:4px 8px 8px 4px;box-shadow:0 20px 40px rgba(0,0,0,.5);margin-bottom:18px}
.bcard .tag{font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--c)}
ul.check{list-style:none;padding:0;margin:0}
ul.check li{padding-left:28px;position:relative;margin:9px 0;color:#d9d5ef;font-size:16px}
ul.check li:before{content:"✓";position:absolute;left:0;top:3px;width:19px;height:19px;border-radius:50%;background:rgba(0,229,199,.15);color:var(--t);font-size:11px;font-weight:900;display:grid;place-items:center}

/* split con immagine */
.split{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.shot{position:relative;border-radius:26px;overflow:hidden;border:1px solid var(--line);box-shadow:0 40px 90px rgba(0,0,0,.55)}
.shot img{display:block;width:100%;height:auto;transform:scale(1.08);transition:transform .2s linear}
.shot:after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(5,4,11,.5),transparent 40%)}

/* bento */
.bento{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:minmax(180px,auto);gap:16px}
.tile{border:1px solid var(--line);border-radius:var(--radius);background:var(--card);padding:24px;position:relative;overflow:hidden}
.tile.big{grid-column:span 2;grid-row:span 2;padding:0;display:flex;align-items:flex-end;background:#000 url(/img/book-holo.webp) center 30%/cover}
.tile.big .tx{padding:26px;background:linear-gradient(to top,rgba(5,4,11,.95),transparent);width:100%}
.tile.wide{grid-column:span 2}
.tile .n{font-size:46px;font-weight:800;letter-spacing:-.04em}
.tile p{color:var(--mut);margin:0;font-size:15px}

/* app teaser */
.app-teaser{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px;align-items:center;border:1px solid var(--line);border-radius:30px;padding:40px;background:radial-gradient(70% 90% at 0% 50%,rgba(124,77,255,.18),transparent 70%),var(--card)}
.app-teaser img{width:100%;height:auto;max-width:440px;display:block;margin:auto;mix-blend-mode:screen;filter:drop-shadow(0 30px 60px rgba(124,77,255,.35));animation:float 7s ease-in-out infinite}

/* prezzo */
.price{max-width:600px;margin:0 auto;position:relative;border-radius:30px;padding:2px;background:conic-gradient(from var(--a,0deg),#00E5C7,#7c4dff,#FF3DA1,#FFD63D,#00E5C7);animation:rot 6s linear infinite}
@property --a{syntax:'<angle>';initial-value:0deg;inherits:false}
@keyframes rot{to{--a:360deg}}
.price .in{border-radius:28px;background:linear-gradient(180deg,#120f26,#08071a);padding:38px;text-align:center}
.price .amount{font-size:96px;font-weight:800;letter-spacing:-.05em;line-height:1;margin:6px 0}
.compare{background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:14px;padding:14px 16px;font-size:15px;color:#cfcbe6;margin:20px 0;text-align:left}
.compare table{width:100%;border-collapse:collapse}
.compare td{padding:4px 0}.compare td:last-child{text-align:right;font-variant-numeric:tabular-nums}
.compare tr.tot td{border-top:1px solid var(--line);font-weight:800;color:#fff;padding-top:8px}

/* faq */
.faq details{border:1px solid var(--line);background:var(--card);border-radius:16px;padding:18px 22px;margin:10px 0;transition:border-color .2s}
.faq details[open]{border-color:rgba(124,77,255,.5)}
.faq summary{cursor:pointer;font-weight:700;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";float:right;color:var(--t);font-size:22px;line-height:1}
.faq details[open] summary:after{content:"–"}
.faq details p{margin:12px 0 0;color:var(--mut)}
footer{padding:50px 0 70px;color:var(--mut);font-size:13px;border-top:1px solid var(--line)}
footer a{color:var(--mut)}
.sticky{position:fixed;left:0;right:0;bottom:0;padding:10px 16px;background:rgba(5,4,11,.85);backdrop-filter:blur(12px);border-top:1px solid var(--line);z-index:40;transform:translateY(110%);transition:transform .3s;display:none}
.sticky.show{transform:none}
.sticky .btn{width:100%;padding:15px}

/* reveal allo scroll */
.rv{opacity:0;transform:translateY(34px);transition:opacity .9s cubic-bezier(.2,.7,.2,1),transform .9s cubic-bezier(.2,.7,.2,1)}
.rv.in{opacity:1;transform:none}
.rv.d1{transition-delay:.1s}.rv.d2{transition-delay:.2s}.rv.d3{transition-delay:.3s}

/* offerta / libreria */
.center{max-width:680px;margin:0 auto;padding:60px 16px}
.progress{display:flex;gap:6px;margin-bottom:26px}
.progress span{flex:1;height:6px;border-radius:6px;background:var(--line)}
.progress span.on{background:var(--grad)}
.offer{border:1px solid var(--line);border-radius:26px;padding:30px;background:var(--card);box-shadow:0 30px 80px rgba(0,0,0,.4)}
.offer .p{font-size:54px;font-weight:800;letter-spacing:-.04em;margin:8px 0 18px}
.okpill{display:inline-block;background:rgba(0,229,199,.12);color:var(--t);font-weight:800;font-size:13px;padding:6px 12px;border-radius:99px}
.dl{display:flex;justify-content:space-between;align-items:center;gap:12px;border:1px solid var(--line);background:var(--card);border-radius:16px;padding:16px 18px;margin:10px 0}
.spinner{width:44px;height:44px;border:4px solid var(--line);border-top-color:var(--t);border-radius:50%;animation:spin 1s linear infinite;margin:40px auto}
.fade{animation:fade .6s ease both}@keyframes fade{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.legal h3{margin-top:28px}

@media (max-width:900px){
  .hero{padding-top:100px}
  .hero .grid,.demo,.split,.app-teaser{grid-template-columns:1fr}
  .books{height:auto;max-width:420px;width:100%;margin:6px auto 0;perspective:none}
  .books .stage{position:relative;display:flex;justify-content:center;align-items:flex-start;transform:none!important}
  .bk{position:relative;left:auto!important;top:auto!important;width:33%;margin:0 -4%;transform:none}
  .bk1{transform:rotate(-9deg) translateY(18px)}.bk2{z-index:2}.bk3{transform:rotate(9deg) translateY(18px)}
  .orbit{display:none}
  .hero{min-height:auto}
  .cards{grid-template-columns:1fr}
  .bento{grid-template-columns:1fr 1fr}.tile.big{grid-column:span 2;min-height:320px}
  .app-teaser{padding:24px}
  section{padding:80px 0}
  .sticky{display:block}
  body{padding-bottom:80px}
  .price .amount{font-size:76px}
}
@media (prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}.rv{opacity:1;transform:none}}

body.test .nav{top:42px}