:root{
  --bg:#f7f8fc;--surface:#fff;--text:#12142a;--muted:#5b6080;--line:#e2e5f2;
  --brand:#4f46e5;--brand2:#06b6d4;--shadow:0 10px 30px rgba(30,32,80,.08);
}
:root[data-theme="dark"]{
  --bg:#0b0d1c;--surface:#14172e;--text:#eceefb;--muted:#9aa0c4;--line:#252a4d;
  --brand:#818cf8;--brand2:#22d3ee;--shadow:0 10px 30px rgba(0,0,0,.4);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--text)}
#bg{position:fixed;inset:0;width:100%;height:100%;z-index:-1;opacity:.55}
a{color:var(--brand)}
.grad{background:linear-gradient(90deg,var(--brand),var(--brand2));-webkit-background-clip:text;background-clip:text;color:transparent}

.nav{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:12px;padding:12px 5vw;background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.2rem;text-decoration:none;color:var(--text);margin-right:auto}
.logo-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand2))}
.nav nav{display:flex;align-items:center;gap:22px}
.nav nav a{text-decoration:none;color:var(--muted);font-weight:500}
.nav nav a:hover{color:var(--text)}
.icon-btn{border:1px solid var(--line);background:var(--surface);color:var(--text);width:38px;height:38px;border-radius:10px;cursor:pointer;font-size:1.1rem}
.burger{display:none}

.btn{display:inline-block;border:0;cursor:pointer;font:600 1rem inherit;padding:12px 24px;border-radius:12px;color:#fff!important;text-decoration:none;background:linear-gradient(135deg,var(--brand),var(--brand2));box-shadow:0 8px 20px rgba(79,70,229,.3);transition:transform .15s}
.btn:hover{transform:translateY(-2px)}
.btn.small{padding:8px 16px}
.btn.ghost{background:transparent;color:var(--text)!important;border:1px solid var(--line);box-shadow:none}
.btn:disabled{opacity:.6;cursor:wait}

main{max-width:1100px;margin:0 auto;padding:0 5vw}
.hero{padding:12vh 0 8vh;text-align:center}
.eyebrow{color:var(--brand);font-weight:700;letter-spacing:.12em;text-transform:uppercase;font-size:.8rem}
h1{font-size:clamp(2.2rem,6vw,4.2rem);line-height:1.1;margin:.3em 0;min-height:2.3em}
.caret{animation:blink 1s steps(1) infinite;color:var(--brand)}
@keyframes blink{50%{opacity:0}}
.lead{max-width:640px;margin:0 auto 28px;color:var(--muted);font-size:1.15rem}
.cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:16px;margin-top:56px}
.stats div{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:var(--shadow)}
.stats b{display:block;font-size:2rem}
.stats span{color:var(--muted);font-size:.9rem}

.section{padding:70px 0}
h2{font-size:clamp(1.7rem,4vw,2.4rem);margin:0 0 6px}
.sub{color:var(--muted);margin:0 0 28px}

.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.tab,.chip{border:1px solid var(--line);background:var(--surface);color:var(--text);padding:9px 18px;border-radius:999px;cursor:pointer;font:500 .95rem inherit}
.tab.active,.chip.active{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;border-color:transparent}
.tab-panel{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:var(--shadow);display:grid;grid-template-columns:1.2fr 1fr;gap:28px;animation:fade .3s}
@keyframes fade{from{opacity:0;transform:translateY(8px)}}
.tab-panel h3{margin-top:0;font-size:1.4rem}
.tab-panel ul{margin:0;padding:0;list-style:none}
.tab-panel li{padding:8px 0 8px 28px;position:relative;border-bottom:1px dashed var(--line)}
.tab-panel li::before{content:"✓";position:absolute;left:0;color:var(--brand);font-weight:700}
.filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:var(--shadow);transition:transform .2s,border-color .2s;animation:fade .3s}
.card:hover{transform:translateY(-5px);border-color:var(--brand)}
.card .ico{font-size:1.8rem}
.card h3{margin:.4em 0 .2em;font-size:1.1rem}
.card p{color:var(--muted);margin:0 0 12px;font-size:.95rem}
.tag{font-size:.75rem;padding:3px 10px;border-radius:999px;background:color-mix(in srgb,var(--brand) 14%,transparent);color:var(--brand);font-weight:600}

.est{display:grid;grid-template-columns:1.3fr 1fr;gap:24px;background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:var(--shadow)}
.est label{display:block;margin-bottom:18px;font-weight:500}
.est output{float:right;color:var(--brand);font-weight:700}
.est input[type=range]{width:100%;accent-color:var(--brand)}
.est-result{text-align:center;display:flex;flex-direction:column;justify-content:center;border-left:1px solid var(--line);padding-left:24px}
.est-result p{margin:0;color:var(--muted)}
.big{font-size:2.6rem;font-weight:800;margin-bottom:14px}

.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px;counter-reset:s}
.steps li{counter-increment:s;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:22px;position:relative}
.steps li::before{content:counter(s);display:grid;place-items:center;width:34px;height:34px;border-radius:50%;color:#fff;font-weight:700;background:linear-gradient(135deg,var(--brand),var(--brand2));margin-bottom:10px}
.steps b{display:block;font-size:1.1rem}
.steps span{color:var(--muted)}

.team{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.person{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:26px;text-align:center;box-shadow:var(--shadow)}
.avatar{width:84px;height:84px;margin:0 auto 12px;border-radius:50%;display:grid;place-items:center;font-size:2rem;font-weight:800;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand2))}
.avatar.alt{background:linear-gradient(135deg,var(--brand2),var(--brand))}
.person h3{margin:.2em 0 0}
.role{display:block;color:var(--brand);font-weight:600;font-size:.85rem;margin-bottom:10px}
.person p{color:var(--muted)}

.form{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:var(--shadow)}
.row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form label{display:block;margin-bottom:16px;font-weight:500;font-size:.92rem}
.form input,.form select,.form textarea{width:100%;margin-top:6px;padding:11px 13px;border-radius:10px;border:1px solid var(--line);background:var(--bg);color:var(--text);font:inherit}
.form input:focus,.form select:focus,.form textarea:focus{outline:2px solid var(--brand);border-color:transparent}
.form .invalid{border-color:#e5484d}
.hp{position:absolute!important;left:-9999px;height:0;width:0;opacity:0}
#status{margin:14px 0 0;font-weight:600}
#status.ok{color:#16a34a}
#status.err{color:#e5484d}

footer{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;padding:28px 5vw;border-top:1px solid var(--line);color:var(--muted)}

.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s,transform .6s}
.reveal.in{opacity:1;transform:none}

@media (max-width:760px){
  .burger{display:block}
  .nav nav{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:flex-start;padding:16px 5vw;background:var(--bg);border-bottom:1px solid var(--line)}
  .nav nav.open{display:flex}
  .tab-panel,.est,.row{grid-template-columns:1fr}
  .est-result{border-left:0;padding-left:0;border-top:1px solid var(--line);padding-top:20px}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}.reveal{opacity:1;transform:none}}