:root{
  --primary:#0b3d5c;--primary-d:#082c43;--accent:#f28c28;--accent-d:#d97712;
  --bg:#ffffff;--alt:#f3f6f9;--text:#1c2a36;--muted:#5b6b78;--line:#dbe3ea;--ok:#1d7a46;--err:#b3261e;
}
*{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;color:var(--text);background:var(--bg)}
a{color:var(--primary)}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.narrow{max-width:780px}
.sr{position:absolute;left:-9999px}
.skip{position:absolute;left:-9999px}.skip:focus{left:10px;top:10px;background:#fff;padding:8px;z-index:99}

.topbar{background:var(--primary-d);color:#fff;font-size:14px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;padding-top:6px;padding-bottom:6px}
.topbar a{color:#fff;margin-right:18px;text-decoration:none}.topbar a:hover{text-decoration:underline}
.topbar select{background:transparent;color:#fff;border:1px solid #ffffff55;border-radius:4px;padding:2px 6px}
.topbar option{color:#000}

.header{position:sticky;top:0;background:#fff;border-bottom:1px solid var(--line);z-index:50}
.header .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{font-size:26px;font-weight:800;color:var(--primary);text-decoration:none;letter-spacing:-.5px}
.logo span{color:var(--accent)}
.menu{display:flex;align-items:center;gap:26px}
.menu>a,.dd-btn{color:var(--text);text-decoration:none;font-weight:600;background:none;border:0;font-size:16px;cursor:pointer;padding:0}
.menu>a:hover,.dd-btn:hover{color:var(--accent-d)}
.dd{position:relative}
.dd-list{display:none;position:absolute;top:100%;left:-10px;min-width:210px;background:#fff;border:1px solid var(--line);border-radius:8px;box-shadow:0 8px 24px #0002;padding:8px 0}
.dd.open .dd-list,.dd:hover .dd-list{display:block}
.dd-list a{display:block;padding:9px 16px;color:var(--text);text-decoration:none}
.dd-list a:hover{background:var(--alt)}
.burger{display:none;font-size:26px;background:none;border:0;cursor:pointer}

.btn{display:inline-block;background:var(--accent);color:#fff;border:2px solid var(--accent);padding:12px 24px;border-radius:8px;font-weight:700;text-decoration:none;cursor:pointer;font-size:16px;text-align:center}
.btn:hover{background:var(--accent-d);border-color:var(--accent-d)}
.btn-ghost{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-ghost:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-sm{padding:8px 16px;font-size:15px}
.btn-block{display:block;width:100%}

.hero{background:linear-gradient(135deg,var(--primary),#14597f);color:#fff;padding:56px 0}
.hero-in{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.hero h1{font-size:clamp(30px,4.5vw,46px);line-height:1.15;margin:0 0 16px}
.lead{font-size:18px;opacity:.95}
.cta-row{display:flex;gap:14px;flex-wrap:wrap;margin:24px 0}
.hero .btn-ghost{color:#fff;border-color:#fff}.hero .btn-ghost:hover{background:#fff;color:var(--primary)}
.facts{list-style:none;padding:0;margin:24px 0 0;display:flex;gap:28px;flex-wrap:wrap}
.facts strong{display:block;font-size:22px;color:var(--accent)}

.calc{background:#fff;color:var(--text);border-radius:14px;padding:26px;box-shadow:0 16px 40px #0004}
.calc h2{margin:0 0 14px;color:var(--primary)}
.calc label{display:block;font-weight:600;margin-top:14px}
.calc output{color:var(--accent-d)}
.calc input[type=range]{width:100%;accent-color:var(--accent)}
.calc select{width:100%;padding:10px;border:1px solid var(--line);border-radius:8px;font-size:16px}
.numfield{display:flex;align-items:center;gap:8px;margin:6px 0 8px}
.numfield input{flex:1;padding:10px;border:1px solid #b7c3cd;border-radius:8px;font-size:18px;font-weight:700;color:var(--primary)}
.numfield input.invalid{border-color:var(--err)}
.numfield span{font-weight:600;color:var(--muted);min-width:56px}
#calcHint{color:var(--err);min-height:1.2em;margin:4px 0 0}
.result{background:var(--alt);border-radius:10px;padding:14px;margin:18px 0;display:grid;gap:8px}
.result div{display:flex;justify-content:space-between}
.result strong{color:var(--primary)}
.small{font-size:13px;color:var(--muted)}

.hero-img{display:block;width:100%;max-width:440px;height:auto;margin:8px 0 0;border-radius:20px;box-shadow:0 14px 34px #0004}
.illu{display:block;width:100%;height:auto;border-radius:16px;margin-bottom:20px}
.illu-s{max-width:240px;margin:0 auto 16px}
img[src$=".jpg"]{object-fit:cover}
.hero-img[src$=".jpg"]{aspect-ratio:4/3;object-position:center 35%}
.illu[src$=".jpg"]{aspect-ratio:16/9}
.illu-s[src$=".jpg"]{aspect-ratio:4/3;max-width:100%}
.ico{width:40px;height:40px;color:var(--accent-d);background:#fff3e3;border-radius:10px;padding:8px}
.ico-w{width:22px;height:22px;color:#fff}
.num{width:48px;height:48px}
.section{padding:64px 0}
.section.alt{background:var(--alt)}
.section h2{font-size:30px;color:var(--primary);margin:0 0 28px}
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.steps li{background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px}
.num{display:inline-flex;width:40px;height:40px;border-radius:50%;background:var(--accent);color:#fff;font-weight:800;align-items:center;justify-content:center}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px}
.card h3,.steps h3{margin:10px 0 8px;color:var(--primary)}
.link{font-weight:700;text-decoration:none;color:var(--accent-d)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.box{background:var(--alt);border-radius:12px;padding:28px}
.section.alt .box{background:#fff}

details{background:#fff;border:1px solid var(--line);border-radius:10px;margin-bottom:10px;padding:0 18px}
summary{cursor:pointer;font-weight:700;padding:15px 0;color:var(--primary)}
details[open] summary{border-bottom:1px solid var(--line);margin-bottom:12px}
details p{margin:0 0 15px}

.form{display:grid;gap:16px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form label{font-weight:600;display:block}
.form input:not([type=checkbox]),.form select,.inline input{width:100%;padding:11px;border:1px solid #b7c3cd;border-radius:8px;font-size:16px;margin-top:4px}
.form .invalid,.inline .invalid{border-color:var(--err)!important}
.legal h1{color:var(--primary)}.legal h2{font-size:20px;margin:26px 0 8px}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.form textarea{width:100%;padding:11px;border:1px solid #b7c3cd;border-radius:8px;font:inherit;margin-top:4px;resize:vertical}
.form textarea.invalid{border-color:var(--err)}
.box .form{margin-top:14px}
.check{display:flex!important;gap:10px;font-weight:400!important}
.inline{display:flex;gap:10px;margin-top:6px}
.msg{min-height:1.4em;font-weight:600}
.msg.ok{color:var(--ok)}.msg.err{color:var(--err)}

.footer{background:var(--primary-d);color:#cfdbe4;padding:36px 0;font-size:14px}
.footer a{color:#fff;margin-right:18px}
.footer .small{color:#9fb3c2}
.rep{background:#ffffff14;padding:14px;border-radius:8px}

.cookie{position:fixed;left:16px;right:16px;bottom:16px;max-width:760px;margin:auto;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 10px 40px #0004;padding:16px 20px;display:flex;gap:16px;align-items:center;justify-content:space-between;flex-wrap:wrap;z-index:100}
.cookie[hidden]{display:none}
.cookie p{margin:0;flex:1 1 280px}
.cookie div{display:flex;gap:10px}

:focus-visible{outline:3px solid var(--accent);outline-offset:2px}

@media(max-width:860px){
  .hero-in,.split,.steps,.cards,.row{grid-template-columns:1fr}
  .burger{display:block}
  .menu{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;align-items:flex-start;padding:18px 20px;border-bottom:1px solid var(--line);gap:14px}
  .menu.open{display:flex}
  .dd-list{position:static;box-shadow:none;border:0;display:none}
  .dd.open .dd-list{display:block}
  .dd:hover .dd-list{display:none}.dd.open:hover .dd-list{display:block}
}