:root{
  --bg:#0b1115;
  --bg2:#10171c;
  --panel:#172026;
  --line:#2c373e;
  --text:#f4f5f6;
  --muted:#b0b7bc;
  --orange:#ff5f00;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:Montserrat,Arial,sans-serif}
a{color:inherit;text-decoration:none}
.container{width:min(var(--max),calc(100% - 80px));margin:auto}
.hero{position:relative;min-height:560px;overflow:hidden;border-bottom:1px solid #243038}
.hero__photo{position:absolute;inset:0;background:url("assets/hero-refinery.jpg") center right/cover no-repeat;filter:saturate(.72)}
.hero__shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(7,12,15,.98) 0%,rgba(7,12,15,.94) 36%,rgba(7,12,15,.36) 70%,rgba(7,12,15,.34) 100%)}
.hero__inner{position:relative;z-index:1;padding-top:28px;padding-bottom:38px}
.brand{display:flex;gap:12px;align-items:center;width:max-content}
.brand__mark{width:42px;height:48px;color:var(--orange);font-size:42px;line-height:48px;transform:scaleX(.8)}
.brand__name{font-size:27px;font-weight:700;letter-spacing:-.03em}
.brand__tag{font-size:8px;line-height:1.35;color:#d6dadd}
.hero__content{max-width:760px;margin-top:58px}
h1{font-size:clamp(37px,4.7vw,62px);line-height:1.06;letter-spacing:-.04em;margin:0 0 22px}
.hero__lead{max-width:720px;color:#d1d5d8;font-size:15px;line-height:1.65;margin-bottom:32px}
.hero__points{display:flex;gap:48px;margin-bottom:32px}
.hero__points>div{display:grid;grid-template-columns:34px auto;column-gap:10px;align-items:center;min-width:190px}
.hero__points .ico{grid-row:span 2;color:var(--orange);font-size:28px;text-align:center}
.hero__points b{font-size:11px;font-weight:600}
.hero__points small{font-size:10px;color:#c1c7cb}
.mail-link{display:inline-flex;gap:11px;align-items:center;font-size:14px;color:#f2f3f4}
.mail-link span{color:var(--orange);font-size:18px}
.section{padding:58px 0}
.solutions{background:linear-gradient(180deg,#0e1519,#10181d)}
h2{font-size:26px;line-height:1.1;margin:0 0 30px;letter-spacing:-.025em}
.solutions h2,.advantages h2{text-align:center}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}
.card{min-height:205px;padding:28px 22px;border:1px solid var(--line);background:linear-gradient(145deg,#182127,#141c21)}
.card__icon{width:42px;height:42px;color:var(--orange);position:relative;margin-bottom:20px}
.card__icon:before,.card__icon:after{content:"";position:absolute;border:2px solid currentColor}
.shield:before{inset:3px 8px;border-radius:15px 15px 22px 22px;transform:scaleX(.8)}
.net:before{inset:3px;background:repeating-linear-gradient(0deg,transparent 0 9px,currentColor 10px 11px),repeating-linear-gradient(90deg,transparent 0 9px,currentColor 10px 11px)}
.mast:before{width:5px;height:36px;left:18px;top:3px}.mast:after{width:32px;height:22px;left:4px;top:10px;border-top:0;transform:skewY(-25deg)}
.plan:before{width:27px;height:34px;left:6px;top:2px;border-radius:2px}.plan:after{width:15px;height:2px;left:12px;top:12px;border-width:0 0 2px 0;box-shadow:0 8px 0 currentColor,0 16px 0 currentColor}
.card h3{font-size:12px;line-height:1.45;margin:0 0 12px}
.card p{font-size:10px;line-height:1.75;color:var(--muted);margin:0}
.feature{display:grid;grid-template-columns:1fr 1fr;min-height:390px;background:#081016;border-top:1px solid #243038;border-bottom:1px solid #243038}
.feature__image{background:url("assets/mast-and-net.jpg") center/cover no-repeat;min-height:390px}
.feature__copy{padding:52px 60px;background:linear-gradient(90deg,#0b1318,#0b1115)}
.feature__copy h2{font-size:27px;margin-bottom:12px}
.accent{width:25px;height:3px;background:var(--orange);margin-bottom:18px}
.feature__copy p{color:#c3c9cd;font-size:12px;line-height:1.7;max-width:520px}
.feature__copy ul{list-style:none;padding:0;margin:22px 0 27px}
.feature__copy li{position:relative;padding-left:20px;margin:9px 0;color:#d8dcdf;font-size:11px}
.feature__copy li:before{content:"✓";position:absolute;left:0;color:var(--orange);font-weight:700}
.advantages{background:#0c1317}
.adv-grid{display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.adv-grid article{padding:22px 18px;border-right:1px solid var(--line)}
.adv-grid article:last-child{border-right:0}
.adv-ico{display:block;color:var(--orange);font-size:27px;margin-bottom:11px}
.adv-grid h3{font-size:11px;margin:0 0 10px}
.adv-grid p{font-size:9px;line-height:1.65;color:var(--muted);margin:0}
.contact{padding:45px 0 38px;background:#0a1115;border-top:1px solid #243038}
.contact__grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:70px;align-items:start}
.contact h2{margin-bottom:16px}
.contact p{font-size:11px;line-height:1.7;color:var(--muted);max-width:360px;margin-bottom:22px}
form{display:grid;grid-template-columns:1fr 1fr;gap:10px}
input,textarea{width:100%;border:1px solid var(--line);background:#171f24;color:#fff;padding:14px;font:inherit;font-size:10px;outline:none}
input:focus,textarea:focus{border-color:var(--orange)}
textarea{grid-column:1 / -1;resize:vertical}
button{border:0;background:var(--orange);color:#fff;font:700 10px Montserrat,sans-serif;padding:16px 24px;cursor:pointer;justify-self:end}
footer{border-top:1px solid #243038;padding:15px;text-align:center;color:#788187;font-size:9px;background:#080e12}
@media(max-width:900px){
  .container{width:min(var(--max),calc(100% - 40px))}
  .hero{min-height:650px}
  .hero__content{margin-top:45px}
  .hero__points{gap:20px}
  .hero__points>div{min-width:0}
  .cards{grid-template-columns:repeat(2,1fr)}
  .feature{grid-template-columns:1fr}
  .feature__image{min-height:330px}
  .adv-grid{grid-template-columns:repeat(2,1fr)}
  .adv-grid article:nth-child(2n){border-right:0}
  .adv-grid article{border-bottom:1px solid var(--line)}
}
@media(max-width:600px){
  .container{width:calc(100% - 30px)}
  .hero{min-height:700px}
  .hero__photo{background-position:68% center}
  .hero__shade{background:linear-gradient(90deg,rgba(7,12,15,.96),rgba(7,12,15,.72))}
  .brand__name{font-size:23px}
  .hero__content{margin-top:50px}
  h1{font-size:37px}
  .hero__lead{font-size:12px}
  .hero__points{display:grid;grid-template-columns:1fr;gap:15px}
  .hero__points>div{grid-template-columns:32px 1fr}
  .cards{grid-template-columns:1fr}
  .card{min-height:185px}
  .feature__copy{padding:38px 25px}
  .feature__copy h2{font-size:23px}
  .adv-grid{grid-template-columns:1fr}
  .adv-grid article{border-right:0!important}
  .contact__grid{grid-template-columns:1fr;gap:30px}
  form{grid-template-columns:1fr}
  textarea{grid-column:auto}
  button{justify-self:stretch}
}