:root{--bg:#f7f8fb;--surf:#fff;--ink:#0d1321;--mut:#5b6475;--line:#e3e7ef;--acc:#2f3cf0;--acc2:#12b5a4;--r:14px;--sh:0 1px 2px rgba(13,19,33,.04),0 12px 32px -12px rgba(13,19,33,.12)}
*{box-sizing:border-box;margin:0}html{scroll-behavior:smooth}
body{font:400 1rem/1.65 Inter,system-ui,sans-serif;background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3{font-family:Sora,Inter,sans-serif;line-height:1.15;letter-spacing:-.02em}
a{color:inherit;text-decoration:none}img{max-width:100%}
:focus-visible{outline:2px solid var(--acc);outline-offset:3px;border-radius:6px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.skip:focus{position:fixed;top:8px;left:8px;width:auto;height:auto;clip:auto;background:#fff;padding:8px 14px;z-index:99;border-radius:8px}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
section{padding:96px 0}
.head{max-width:640px;margin-bottom:48px}.head h2{font-size:clamp(1.8rem,3.4vw,2.5rem);margin-bottom:14px}.head p{color:var(--mut)}
/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(247,248,251,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo img{height:34px;display:block}
.nav ul{display:flex;gap:28px;list-style:none;padding:0;font-size:.95rem;color:var(--mut)}
.nav ul a:hover{color:var(--ink)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:999px;font-weight:600;font-size:.95rem;border:1px solid var(--ink);background:var(--ink);color:#fff;cursor:pointer;transition:transform .2s,box-shadow .2s;font-family:inherit}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 24px -8px rgba(13,19,33,.4)}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line)}.btn.ghost:hover{border-color:var(--ink)}
.menu{display:none;background:none;border:0;font-size:1.4rem;cursor:pointer}
/* hero */
.hero{padding:72px 0 88px}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(2.2rem,5vw,3.7rem);margin-bottom:20px}
.hero p.lead{font-size:1.15rem;color:var(--mut);max-width:520px;margin-bottom:32px}
.cta{display:flex;gap:12px;flex-wrap:wrap}
.proof{display:flex;gap:32px;margin-top:40px;padding-top:24px;border-top:1px solid var(--line);flex-wrap:wrap}
.proof b{display:block;font:700 1.5rem Sora,sans-serif}.proof span{font-size:.85rem;color:var(--mut)}
.scene{perspective:1100px;height:420px;display:grid;place-items:center}
.stack{position:relative;width:280px;height:280px;transform-style:preserve-3d;transform:rotateX(58deg) rotateZ(-38deg);transition:transform .25s ease-out;animation:drift 9s ease-in-out infinite alternate}
.layer{position:absolute;inset:0;border-radius:22px;border:1px solid rgba(47,60,240,.18);background:rgba(255,255,255,.7);backdrop-filter:blur(4px);box-shadow:0 30px 50px -20px rgba(47,60,240,.35);display:grid;place-items:center;font:600 .95rem Sora,sans-serif;color:var(--ink)}
.layer:nth-child(1){transform:translateZ(0);background:linear-gradient(135deg,#dfe3ff,#f2f4ff)}
.layer:nth-child(2){transform:translateZ(54px)}
.layer:nth-child(3){transform:translateZ(108px);background:linear-gradient(135deg,var(--acc),#6b74ff);color:#fff;border:0}
.layer:nth-child(4){transform:translateZ(162px);background:linear-gradient(135deg,#c9f3ee,#fff)}
@keyframes drift{to{translate:0 -10px}}
/* cards */
.grid{display:grid;gap:20px}.g3{grid-template-columns:repeat(3,1fr)}.g2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--surf);border:1px solid var(--line);border-radius:var(--r);padding:28px;box-shadow:var(--sh);transform-style:preserve-3d;transition:transform .2s ease-out,border-color .2s;display:flex;flex-direction:column}
.card:hover{border-color:#c5cbff}
.card i.ic{width:44px;height:44px;border-radius:12px;background:#eef0ff;color:var(--acc);display:grid;place-items:center;margin-bottom:18px;font-size:1.1rem}
.card h3{font-size:1.15rem;margin-bottom:8px}.card p{color:var(--mut);font-size:.95rem}
.card ul{list-style:none;padding:0;margin-top:14px;display:flex;flex-wrap:wrap;gap:6px}
.card li{font-size:.78rem;padding:3px 10px;border-radius:999px;background:var(--bg);border:1px solid var(--line);color:var(--mut)}
.more{margin-top:auto;padding-top:18px;font-weight:600;font-size:.9rem;color:var(--acc)}
.eco{background:#fff;border-block:1px solid var(--line)}
.eco .card{background:var(--bg);box-shadow:none}
.eco .card small{color:var(--acc2);font-weight:600;margin-bottom:6px}
/* process */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.steps div{border-top:2px solid var(--ink);padding-top:16px}.steps div::before{counter-increment:s;content:counter(s);font:700 .9rem Sora;color:var(--acc)}
.steps h3{font-size:1.05rem;margin:6px 0}.steps p{color:var(--mut);font-size:.92rem}
/* faq */
details{background:var(--surf);border:1px solid var(--line);border-radius:var(--r);padding:18px 22px;margin-bottom:10px}
summary{cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:12px}
summary::after{content:"+";color:var(--acc);font-size:1.2rem;transition:transform .2s}details[open] summary::after{transform:rotate(45deg)}
details p{margin-top:10px;color:var(--mut)}
/* contact */
.contact .wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px}
form.f{background:var(--surf);border:1px solid var(--line);border-radius:var(--r);padding:28px;box-shadow:var(--sh);display:grid;gap:14px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
label{font-size:.85rem;font-weight:600;display:grid;gap:6px}
input,select,textarea{font:inherit;padding:12px 14px;border:1px solid var(--line);border-radius:10px;background:var(--bg);width:100%}
input:focus,select:focus,textarea:focus{outline:2px solid var(--acc);border-color:transparent;background:#fff}
.nl{display:flex;gap:8px;margin-top:16px}.nl input{border-radius:999px}
footer{border-top:1px solid var(--line);padding:56px 0 32px;background:#fff;font-size:.9rem;color:var(--mut)}
footer .wrap{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
footer h4{color:var(--ink);margin-bottom:12px;font-size:.95rem}footer a{display:block;padding:3px 0}footer a:hover{color:var(--ink)}
.copy{grid-column:1/-1;border-top:1px solid var(--line);padding-top:20px;margin-top:12px}
.rv{opacity:0;transform:translateY(16px);transition:opacity .6s,transform .6s}.rv.on{opacity:1;transform:none}
@media(max-width:900px){.hero .wrap,.contact .wrap{grid-template-columns:1fr}.g3,.steps,footer .wrap{grid-template-columns:1fr 1fr}.scene{height:340px}.nav ul{display:none;position:absolute;top:68px;left:0;right:0;background:var(--bg);flex-direction:column;padding:20px 24px;border-bottom:1px solid var(--line)}.nav ul.open{display:flex}.menu{display:block}section{padding:72px 0}}
@media(max-width:600px){.g3,.g2,.steps,.row,footer .wrap{grid-template-columns:1fr}.stack{width:220px;height:220px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.rv{opacity:1;transform:none}}