:root{--night:#121a2e;--dusk:#1d2845;--lamp:#f0bf5a;--mist:#eef1f6;--ink:#1b2236;--soft:#aab4c8;--serif:"Palatino Linotype","Book Antiqua",Palatino,Georgia,serif;--sans:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth}
body{font:17px/1.6 var(--sans);color:var(--ink);background:var(--mist);-webkit-font-smoothing:antialiased}
a{color:inherit}
:focus-visible{outline:3px solid var(--lamp);outline-offset:3px;border-radius:4px}
.light :focus-visible{outline-color:#a86d00}
.wrap{width:min(1080px,100% - 40px);margin-inline:auto}
h1,h2,h3{font-family:var(--serif);font-weight:700;line-height:1.12;letter-spacing:-.01em}
h2{font-size:clamp(1.8rem,4vw,2.6rem);max-width:20ch}
p{max-width:62ch}

/* testata e hero */
.dark{background:var(--night);color:#e9edf5}
header{padding:22px 0}
header .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px}
.logo{font:700 1.55rem var(--serif);text-decoration:none;display:flex;align-items:center;gap:10px}
.logo i{width:14px;height:14px;border-radius:50%;background:var(--lamp);box-shadow:0 0 18px 4px rgba(240,191,90,.55)}
nav{display:flex;align-items:center;gap:26px;font-size:.97rem}
nav a{text-decoration:none;color:var(--soft)}
nav a:hover{color:#fff}
.btn{display:inline-block;padding:13px 24px;border-radius:999px;font-weight:600;text-decoration:none;background:var(--lamp);color:var(--night);transition:transform .15s}
.btn:hover{transform:translateY(-2px)}
.btn.ghost{background:transparent;color:#fff;box-shadow:inset 0 0 0 2px rgba(255,255,255,.35)}
nav .btn{padding:9px 18px;color:var(--night)}
.hero{padding:clamp(36px,7vw,84px) 0 clamp(56px,9vw,110px)}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(32px,6vw,72px);align-items:center}
.hero h1{font-size:clamp(2.2rem,5.4vw,3.8rem)}
.hero p{margin-top:22px;font-size:1.12rem;color:#cdd5e4}
.cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.night{position:relative;background:var(--dusk);border-radius:22px;padding:22px 22px 26px;box-shadow:0 0 110px rgba(240,191,90,.2),0 24px 50px rgba(0,0,0,.35)}
.night small{display:block;color:var(--lamp);font:600 .85rem var(--sans);margin-bottom:14px}
.m{max-width:88%;padding:11px 15px;border-radius:16px;font-size:.97rem;line-height:1.45;margin-top:10px}
.g{background:#33426b;color:#fff;margin-left:auto;border-bottom-right-radius:4px}
.z{background:#f4efe3;color:var(--ink);border-bottom-left-radius:4px}
.m{opacity:0;animation:up .5s ease forwards}
.m:nth-of-type(1){animation-delay:.5s}.m:nth-of-type(2){animation-delay:1.6s}.m:nth-of-type(3){animation-delay:3s}.m:nth-of-type(4){animation-delay:4.2s}
@keyframes up{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.night em{display:block;margin-top:18px;color:var(--soft);font-size:.85rem;font-style:normal}

/* sezioni */
section{padding:clamp(56px,9vw,104px) 0}
.light{background:var(--mist)}
.white{background:#fff}
.three{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(24px,4vw,56px);margin-top:44px}
.three h3{font-size:1.35rem;margin-bottom:10px}
.three p{color:#454e66}
ol{list-style:none;padding:0;margin-top:44px;display:grid;gap:0}
ol li{display:grid;grid-template-columns:72px 1fr;gap:8px 20px;padding:28px 0;border-top:1px solid #c9d0de}
ol li:last-child{border-bottom:1px solid #c9d0de}
ol b{font:700 2.6rem/1 var(--serif);color:#a86d00}
ol h3{font-size:1.3rem;margin-bottom:6px}
ol p{color:#454e66}
.cols{display:grid;grid-template-columns:1fr 1fr;margin-top:40px}
.cols>div{padding:0 clamp(18px,4vw,48px) 0 0}
.cols>div+div{padding:0 0 0 clamp(18px,4vw,48px);border-left:2px solid #c9d0de}
.cols h3{font-size:1.3rem;margin-bottom:14px}
.cols ul{padding-left:1.1em;color:#454e66}
.cols li{margin:8px 0}
.demo p{color:#cdd5e4;margin-top:18px}
.demo .note{font-size:.92rem;color:var(--soft)}
details{border-top:1px solid #c9d0de;padding:18px 0;max-width:760px}
details:last-of-type{border-bottom:1px solid #c9d0de}
summary{cursor:pointer;font:700 1.15rem var(--serif)}
details p{margin-top:10px;color:#454e66}
.faq h2{margin-bottom:30px}
.contact p{color:#cdd5e4;margin-top:18px}
.contact .btn{margin-top:30px}
footer{padding:28px 0;font-size:.9rem;color:var(--soft);background:var(--night)}

@media (max-width:860px){
 .hero .wrap,.three,.cols{grid-template-columns:1fr}
 nav a:not(.btn){display:none}
 .cols>div+div{padding:28px 0 0;border-left:0;border-top:2px solid #c9d0de;margin-top:28px}
 .cols>div{padding:0}
 ol li{grid-template-columns:52px 1fr}
}
@media (prefers-reduced-motion:reduce){.m{animation:none;opacity:1}.btn{transition:none}html{scroll-behavior:auto}}

/* pagina prezzi */
.phero{padding:clamp(28px,6vw,64px) 0 clamp(48px,8vw,90px)}
.phero h1{font-size:clamp(2.1rem,5vw,3.4rem);max-width:20ch}
.phero p{margin-top:18px;font-size:1.12rem;color:#cdd5e4}
.plans{display:grid;grid-template-columns:1fr 1fr;gap:26px;max-width:880px}
.plan{position:relative;background:#fff;border-radius:24px;padding:clamp(24px,4vw,38px);box-shadow:0 2px 4px rgba(18,26,46,.06),0 22px 44px rgba(18,26,46,.1);display:flex;flex-direction:column}
.plan.best{box-shadow:0 0 0 3px var(--lamp),0 22px 44px rgba(18,26,46,.14)}
.plan h2{font-size:1.7rem}
.plan .for{color:#454e66;margin-top:6px}
.price{margin:22px 0 4px;color:#454e66}
.price b{font:700 3rem/1 var(--serif);color:var(--ink);margin-right:6px}
.plan .sub{color:#a86d00;font-weight:600}
.plan ul{padding-left:1.1em;margin:20px 0 28px;color:#454e66;flex:1}
.plan li{margin:8px 0}
.plan .btn{align-self:flex-start;background:var(--night);color:#fff}
.plan.best .btn{background:var(--lamp);color:var(--night)}
.tag{position:absolute;top:-14px;right:24px;background:var(--lamp);color:var(--night);font:700 .8rem var(--sans);padding:5px 14px;border-radius:999px}
.calc{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:32px;max-width:900px}
.calc label{display:flex;flex-direction:column;gap:6px;font-weight:600;font-size:.9rem}
.calc input,.calc select{font:inherit;padding:10px 12px;border:1px solid #c9d0de;border-radius:10px;background:#fff;width:100%}
.out{margin-top:26px;font:700 clamp(1.3rem,3vw,1.8rem)/1.35 var(--serif);max-width:34ch}
.note{display:block;margin-top:10px;color:#454e66;font-size:.92rem}
@media(max-width:860px){.plans{grid-template-columns:1fr}.calc{grid-template-columns:1fr 1fr}}

/* ===== versione 2: scena 3D, pagine multiple ===== */
.logo img{display:block}
header .wrap{position:relative;z-index:3}
.hero{position:relative;overflow:hidden;perspective:1100px;padding-bottom:clamp(96px,13vw,160px);background:radial-gradient(900px 520px at 78% 40%,rgba(240,191,90,.2),transparent 60%),radial-gradient(1000px 700px at 0% 0%,rgba(70,90,160,.38),transparent 60%),linear-gradient(180deg,#121a2e,#0e1527)}
.hero .wrap{position:relative;z-index:2}
.hero.sub{padding:clamp(28px,5vw,56px) 0 clamp(56px,8vw,96px)}
.hero.sub .wrap{display:block}
.hero.sub h1{font-size:clamp(2.1rem,5vw,3.5rem);max-width:21ch}
.lead{margin-top:22px;font-size:1.14rem;color:#cdd5e4;max-width:56ch}
.kicker{color:var(--lamp);font-weight:600;margin-bottom:16px}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,#ffe4a6,#f0bf5a 60%,#e39a2c);-webkit-background-clip:text;background-clip:text;color:transparent}
.trust{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:32px;color:#aab4c8;font-size:.95rem}
.trust li:before{content:"";display:inline-block;width:8px;height:8px;border-radius:2px;background:var(--lamp);margin-right:10px;transform:rotate(45deg)}
.scene{position:absolute;inset:0;transform-style:preserve-3d;transition:transform .45s ease-out;z-index:1;pointer-events:none}
.orb{position:absolute;right:5%;top:50%;transform:translateY(-50%);width:min(38vw,440px);aspect-ratio:1;border-radius:50%;background:radial-gradient(circle at 36% 30%,#fff1c8 0,#f4c76c 30%,#e0a23c 58%,rgba(224,162,60,0) 72%);opacity:.5;filter:blur(2px);z-index:1;animation:bob 9s ease-in-out infinite}
.sub .orb{width:260px;top:36%;opacity:.4}
@keyframes bob{50%{transform:translateY(-53%)}}
.cube{position:absolute;width:var(--s);height:var(--s);transform-style:preserve-3d;animation:spin var(--d) linear infinite}
.cube i{position:absolute;inset:0;border:1px solid rgba(240,191,90,.5);background:linear-gradient(135deg,rgba(240,191,90,.18),rgba(110,150,255,.1))}
.cube i:nth-child(1){transform:translateZ(calc(var(--s)/2))}
.cube i:nth-child(2){transform:rotateY(90deg) translateZ(calc(var(--s)/2))}
.cube i:nth-child(3){transform:rotateY(180deg) translateZ(calc(var(--s)/2))}
.cube i:nth-child(4){transform:rotateY(-90deg) translateZ(calc(var(--s)/2))}
.cube i:nth-child(5){transform:rotateX(90deg) translateZ(calc(var(--s)/2))}
.cube i:nth-child(6){transform:rotateX(-90deg) translateZ(calc(var(--s)/2))}
@keyframes spin{from{transform:rotateX(18deg) rotateY(0)}to{transform:rotateX(378deg) rotateY(360deg)}}
.ridge{position:absolute;left:0;bottom:-1px;width:100%;height:clamp(70px,10vw,140px);z-index:2}
.intro{margin-top:16px;color:#454e66;max-width:62ch}
.chips{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
.chips span{background:#fff;border-radius:999px;padding:11px 20px;font-weight:600;box-shadow:0 2px 4px rgba(18,26,46,.06),0 10px 24px rgba(18,26,46,.08)}
.chips span:nth-child(3n){transform:rotate(-1.5deg)}.chips span:nth-child(3n+1){transform:rotate(1deg)}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(22px,4vw,48px);margin-top:44px}
.steps.four{grid-template-columns:repeat(4,1fr)}
.step{border-top:2px solid rgba(240,191,90,.55);padding-top:20px}
.step b{display:block;font:700 2.6rem/1 var(--serif);color:var(--lamp)}
.step h3{margin:12px 0 8px;font-size:1.25rem}
.step p{color:#cdd5e4}
.light .step,.white .step{border-color:#c9d0de}
.light .step b,.white .step b{color:#a86d00}
.light .step p,.white .step p{color:#454e66}
.yn{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin-top:40px}
.yn>div{border-radius:26px;padding:clamp(24px,4vw,40px)}
.yn .si{background:var(--night);color:#e9edf5;box-shadow:0 22px 44px rgba(18,26,46,.22)}
.yn .no{background:#fff;color:#454e66;box-shadow:inset 0 0 0 2px #e6cdc7}
.yn h3{font-size:1.5rem;margin-bottom:14px}
.yn ul{list-style:none;padding:0}
.yn li{position:relative;padding-left:36px;margin:16px 0;line-height:1.5}
.yn li:before{position:absolute;left:0;top:0;font-weight:700}
.yn .si li:before{content:"\2713";color:var(--lamp)}
.yn .no li:before{content:"\2715";color:#c0503f}
.band{text-align:left}
.band p{color:#cdd5e4;margin-top:16px}
.band .cta{margin-top:28px}
details{background:#fff;border:0;border-radius:16px;padding:18px 24px;margin-top:12px;box-shadow:0 2px 4px rgba(18,26,46,.05),0 10px 24px rgba(18,26,46,.06)}
details:last-of-type{border:0}
.faqg h2{font-size:1.6rem;margin:46px 0 6px}
.need{margin-top:34px;padding-left:1.2em;max-width:60ch;color:#454e66}
.need li{margin:10px 0}
.foot{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:30px;align-items:start}
.foot a{display:block;text-decoration:none;color:var(--soft);margin:6px 0}
.foot a:hover{color:#fff}
.foot .logo{margin-bottom:8px;color:#fff}
.foot p{max-width:30ch}
@media(max-width:860px){
 header .wrap{flex-wrap:wrap}
 nav{width:100%;overflow-x:auto;gap:18px;white-space:nowrap}
 nav a:not(.btn){display:inline-block}
 .steps,.steps.four,.yn,.foot{grid-template-columns:1fr}
 .hero{padding-bottom:110px}
}
@media(prefers-reduced-motion:reduce){.cube,.orb{animation:none}.scene{transition:none}}