:root{
  --paper:#F7F5F0;
  --white:#FDFCFA;
  --paper-3:#EFECE5;
  --cobalt:#0F3CA3;
  --cobalt-deep:#0A2A73;
  --cobalt-pale:#E7ECF8;
  --navy:#0B1B3F;
  --sky:#7FA0E8;
  --ink:#14171C;
  --muted:#5A6172;
  --signal:#B8761A;
  --rule:rgba(20,23,28,.13);
  --rule-light:rgba(247,245,240,.18);
  --r:10px;

  --display:'Oswald',sans-serif;
  --body:'Golos Text',sans-serif;
  --mono:'JetBrains Mono',monospace;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.64;-webkit-font-smoothing:antialiased}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
img{max-width:100%;display:block}
a{color:inherit}
:focus-visible{outline:3px solid var(--cobalt);outline-offset:3px}

.wrap{max-width:1180px;margin:0 auto;padding:0 32px}
.wrap-narrow{max-width:900px;margin:0 auto;padding:0 32px}
@media(max-width:640px){.wrap,.wrap-narrow{padding:0 20px}}

/* ---------- image slots (replace with <img>) ---------- */
.slot{
  background:var(--cobalt-pale);
  border:1px dashed rgba(15,60,163,.35);
  border-radius:var(--r);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:20px;gap:6px;color:var(--cobalt);
  font-family:var(--mono);font-size:12px;line-height:1.5;
}
.slot b{font-weight:500;font-size:13px}
.slot span{opacity:.7}

/* ---------- header ---------- */
.top{position:sticky;top:0;z-index:60;background:var(--white);border-bottom:1px solid var(--rule)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:70px}
.mark{display:inline-flex;align-items:center;gap:10px;font-family:var(--display);font-weight:600;font-size:21px;letter-spacing:.22em;text-transform:uppercase;text-decoration:none;color:var(--navy);white-space:nowrap}
.mark .mark-logo{flex:none;width:47.5px;height:36px;color:inherit;background:currentColor;-webkit-mask:url(images/logo.svg) no-repeat center/contain;mask:url(images/logo.svg) no-repeat center/contain;
  /* the line box centre sits above the cap centre — nudge the logo onto the letters */
  transform:translateY(.09em)}
.mark .mark-name{line-height:1}
@supports (text-box:cap alphabetic){
  .mark .mark-name{text-box:cap alphabetic}
  .mark .mark-logo{transform:none}
}
.top nav{display:flex;gap:28px;font-size:14px}
.top nav a{text-decoration:none;color:var(--muted);transition:.18s}
.top nav a:hover,.top nav a[aria-current]{color:var(--cobalt)}
.top .right{display:flex;align-items:center;gap:18px}
.top .tel{font-family:var(--mono);font-size:14px;color:var(--navy);text-decoration:none;white-space:nowrap}
.nav-toggle{display:none;background:none;border:1px solid var(--rule);border-radius:var(--r);padding:8px 12px;font-family:var(--body);font-size:14px;cursor:pointer;color:var(--navy)}
@media(max-width:960px){
  .top nav{display:none;position:absolute;top:70px;left:0;right:0;background:var(--white);border-bottom:1px solid var(--rule);flex-direction:column;gap:0;padding:8px 32px 20px}
  .top nav.open{display:flex}
  .top nav a{padding:12px 0;border-bottom:1px solid var(--rule)}
  .nav-toggle{display:block}
  .top .tel{display:none}
}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;text-decoration:none;font-family:var(--body);font-weight:500;font-size:15px;padding:13px 26px;border-radius:var(--r);border:1px solid var(--cobalt);transition:.18s;white-space:nowrap}
.btn-solid{background:var(--cobalt);color:#fff}
.btn-solid:hover{background:var(--cobalt-deep);border-color:var(--cobalt-deep)}
.btn-line{color:var(--cobalt);background:transparent}
.btn-line:hover{background:var(--cobalt);color:#fff}
.btn-ghost{border-color:rgba(255,255,255,.5);color:#fff;background:transparent}
.btn-ghost:hover{background:#fff;color:var(--navy);border-color:#fff}

/* ---------- hero ---------- */
.hero{position:relative;background:var(--navy);color:#fff;overflow:hidden}
.hero-media{position:absolute;inset:0}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media .slot{height:100%;border-radius:0;border:0;background:#12274F;color:var(--sky)}
.hero::after{content:'';position:absolute;inset:0;background:linear-gradient(100deg,rgba(11,27,63,.93) 0%,rgba(11,27,63,.86) 38%,rgba(11,27,63,.62) 70%,rgba(11,27,63,.5) 100%)}
.hero-inner{position:relative;z-index:2;padding:104px 0 138px}
.hero .eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--sky);margin-bottom:22px}
.hero h1{font-family:var(--display);font-weight:500;font-size:clamp(32px,5.4vw,58px);line-height:1.08;text-transform:uppercase;max-width:17ch}
.hero p{margin:22px 0 0;max-width:52ch;font-size:17px;color:rgba(255,255,255,.84)}
.hero .cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
@media(max-width:700px){
  .hero::after{background:linear-gradient(180deg,rgba(11,27,63,.88),rgba(11,27,63,.8))}
  .hero-inner{padding:76px 0 112px}
}

/* fact strip overlapping hero */
.factstrip{position:relative;z-index:5;margin-top:-64px;margin-bottom:76px}
.factstrip .inner{background:var(--white);border:1px solid var(--rule);border-radius:var(--r);display:grid;grid-template-columns:repeat(4,1fr);overflow:hidden}
@media(max-width:860px){.factstrip .inner{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.factstrip .inner{grid-template-columns:1fr}}
.fact{padding:26px 24px;border-right:1px solid var(--rule)}
.fact:last-child{border-right:0}
@media(max-width:860px){.fact:nth-child(2){border-right:0}.fact:nth-child(1),.fact:nth-child(2){border-bottom:1px solid var(--rule)}}
.fact .k{font-family:var(--mono);font-size:11px;letter-spacing:.13em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.fact .v{font-family:var(--display);font-weight:500;font-size:26px;line-height:1.1;color:var(--navy)}
.fact .d{font-size:14px;color:var(--muted);margin-top:6px;line-height:1.45}

/* ---------- sections ---------- */
section{padding:80px 0}
.sec-head{margin-bottom:44px}
.sec-head.center{text-align:center;max-width:66ch;margin-left:auto;margin-right:auto}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--cobalt);margin-bottom:14px}
h2{font-family:var(--display);font-weight:500;text-transform:uppercase;font-size:clamp(26px,3.4vw,40px);line-height:1.12;color:var(--navy)}
h3{font-family:var(--display);font-weight:500;text-transform:uppercase;font-size:21px;letter-spacing:.03em;color:var(--navy)}
.sec-head p{margin-top:16px;color:var(--muted);font-size:17px}

/* service tiles with image */
.tiles{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media(max-width:1000px){.tiles{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.tiles{grid-template-columns:1fr}}
.tile{position:relative;border-radius:var(--r);overflow:hidden;min-height:280px;display:flex;flex-direction:column;justify-content:flex-end;text-decoration:none;background:var(--navy)}
.tile .ph{position:absolute;inset:0}
.tile .ph img{width:100%;height:100%;object-fit:cover}
.tile .ph .slot{height:100%;border-radius:0;border:0;background:#12274F;color:var(--sky)}
.tile::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,27,63,.15) 40%,rgba(11,27,63,.88))}
.tile .cap{position:relative;z-index:2;padding:22px}
.tile .cap h3{color:#fff;font-size:19px}
.tile .cap p{color:rgba(255,255,255,.78);font-size:14px;margin-top:6px;line-height:1.45}

/* story + fact panel */
.story{display:grid;grid-template-columns:1.35fr 1fr;gap:32px;align-items:stretch}
@media(max-width:900px){.story{grid-template-columns:1fr}}
.story .ph{border-radius:var(--r);overflow:hidden;min-height:380px;background:var(--cobalt-pale)}
.story .ph img{width:100%;height:100%;object-fit:cover}
.story .ph .slot{height:100%;min-height:380px}
.panel{background:var(--white);border:1px solid var(--rule);border-radius:var(--r);padding:30px 28px}
.panel > p{color:var(--muted);font-size:16px;line-height:1.6}
.panel .rows{margin-top:24px;border-top:1px solid var(--rule)}
.panel .row{display:grid;grid-template-columns:110px 1fr;align-items:start;gap:4px 14px;padding:13px 0;border-bottom:1px solid var(--rule);font-size:15px;line-height:1.5}
.panel .row .k{color:var(--muted)}
.panel .row .v{color:var(--navy);font-weight:500;text-align:left}
@media(max-width:420px){.panel .row{grid-template-columns:1fr}}
.panel .btn{margin-top:24px}

/* numbered list + images */
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:stretch}
@media(max-width:900px){.split{grid-template-columns:1fr;gap:28px}}
.numlist{border-top:1px solid var(--rule)}
.numlist a{display:flex;align-items:center;gap:18px;padding:18px 0;border-bottom:1px solid var(--rule);text-decoration:none;transition:.18s}
.numlist a:hover{padding-left:8px;color:var(--cobalt)}
.numlist .n{font-family:var(--mono);font-size:13px;color:var(--cobalt);flex:0 0 24px}
.numlist .t{flex:1;font-size:17px}
.numlist .arr{color:var(--muted);font-family:var(--mono)}
.split .ph{position:relative;border-radius:var(--r);overflow:hidden;min-height:360px;max-height:620px;background:var(--cobalt-pale)}
.split .ph img{position:absolute;inset:0;width:100%;height:100%;max-height:620px;object-fit:cover}
.split .ph .slot{position:absolute;inset:0;height:100%}
@media(max-width:900px){
  .split .ph{height:clamp(240px,56vw,420px);min-height:0;max-height:none}
  .split .ph img{max-height:none}
}

/* dark safety band */
.band{background:var(--navy);color:#fff}
.band h2{color:#fff}
.band .eyebrow{color:var(--sky)}
.band .sec-head p{color:rgba(255,255,255,.76)}
.checks{display:grid;grid-template-columns:1fr 1.15fr;gap:40px;align-items:center}
@media(max-width:900px){.checks{grid-template-columns:1fr}}
.check{display:flex;gap:14px;padding:15px 0;border-bottom:1px solid var(--rule-light);align-items:flex-start}
.check:last-child{border-bottom:0}
.check .mk{color:var(--sky);font-family:var(--mono);font-size:14px;flex:0 0 auto;line-height:1.6}
.check .tx strong{display:block;font-weight:500;font-size:16px;color:#fff}
.check .tx span{font-size:14px;color:rgba(255,255,255,.72);line-height:1.5}
.checks .ph{border-radius:var(--r);overflow:hidden;min-height:400px}
.checks .ph img{width:100%;height:100%;object-fit:cover}
.checks .ph .slot{height:100%;min-height:400px;background:#12274F;border-color:rgba(127,160,232,.4);color:var(--sky)}

/* gas free gauge */
.gauge{background:rgba(255,255,255,.05);border:1px solid var(--rule-light);border-radius:var(--r);padding:28px 26px;margin-top:40px}
.gauge-head{display:flex;justify-content:space-between;align-items:baseline;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.gauge-title{font-family:var(--display);font-size:15px;letter-spacing:.14em;text-transform:uppercase;color:#fff}
.gauge-note{font-family:var(--mono);font-size:12px;color:rgba(255,255,255,.6)}
.scale{position:relative;height:50px}
.scale-track{position:absolute;top:20px;left:0;right:0;height:3px;background:var(--rule-light)}
.scale-fill{position:absolute;top:20px;left:0;height:3px;background:var(--sky);width:22%;transform-origin:left;animation:sweep 1.5s cubic-bezier(.16,.8,.28,1) both}
@keyframes sweep{from{transform:scaleX(4.2)}to{transform:scaleX(1)}}
.threshold{position:absolute;top:6px;left:22%;height:31px;width:2px;background:#fff}
.threshold::after{content:'≤ 300 мг/куб.м';position:absolute;left:12px;top:-2px;white-space:nowrap;font-family:var(--mono);font-size:13px;color:#fff}
.ticks{position:absolute;top:34px;left:0;right:0;display:flex;justify-content:space-between}
.ticks span{font-family:var(--mono);font-size:11px;color:rgba(255,255,255,.55)}
@media(max-width:640px){.threshold::after{font-size:11px}.ticks span:nth-child(even){display:none}}

/* references */
.refs{background:var(--paper-3)}
.ref-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:900px){.ref-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.ref-grid{grid-template-columns:1fr}}
.ref{background:var(--white);border:1px solid var(--rule);border-radius:var(--r);padding:22px 20px;display:flex;flex-direction:column}
.ref .name{font-family:var(--display);font-weight:500;font-size:16px;text-transform:uppercase;letter-spacing:.02em;line-height:1.25;color:var(--navy)}
.ref .job{margin-top:9px;font-size:14px;color:var(--muted);line-height:1.5;flex:1}
.ref .vol{font-family:var(--mono);font-size:12px;color:var(--cobalt);margin-top:12px}
.ref-more{margin-top:24px;display:flex;justify-content:center}

/* permits */
.permit-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
@media(max-width:760px){.permit-grid{grid-template-columns:1fr}}
.permit{background:var(--white);border:1px solid var(--rule);border-top:3px solid var(--cobalt);border-radius:var(--r);padding:24px 22px}
.permit .lbl{font-family:var(--mono);font-size:11px;letter-spacing:.13em;text-transform:uppercase;color:var(--muted);display:block;margin-bottom:10px}
.permit .no{font-family:var(--mono);font-size:18px;font-weight:500;line-height:1.4;color:var(--navy);word-break:break-word}
.permit .body{margin-top:12px;font-size:15px;color:var(--muted);line-height:1.55}

/* fleet rows */
.fleet-list{border-top:1px solid var(--rule)}
.fleet-row{display:flex;gap:22px;padding:17px 0;border-bottom:1px solid var(--rule);align-items:baseline}
.fleet-row .qty{font-family:var(--mono);font-size:14px;color:var(--cobalt);flex:0 0 46px}
.fleet-row .item{font-size:17px;flex:1}
.fleet-row .tag{font-family:var(--mono);font-size:12px;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);flex:0 0 auto}
.fleet-row .tag.ex{color:var(--signal)}
@media(max-width:640px){.fleet-row{flex-wrap:wrap;gap:6px}.fleet-row .item{flex:1 1 100%;order:2}.fleet-row .tag{order:3}}

/* cta band */
.ctaband{background:var(--cobalt);color:#fff;text-align:center}
.ctaband h2{color:#fff}
.ctaband p{margin:16px auto 0;max-width:56ch;color:rgba(255,255,255,.86)}
.ctaband .cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:30px}

/* footer */
footer{background:var(--navy);color:rgba(255,255,255,.7);padding:64px 0 0}
.fgrid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:48px}
@media(max-width:900px){.fgrid{grid-template-columns:1fr 1fr;gap:32px}}
@media(max-width:520px){.fgrid{grid-template-columns:1fr}}
footer .mark{color:#fff;font-size:20px}
footer .blurb{margin-top:16px;font-size:15px;line-height:1.6;max-width:34ch}
footer h4{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.5);margin-bottom:16px;font-weight:400}
footer ul{list-style:none}
footer li{margin-bottom:10px;font-size:15px}
footer a{text-decoration:none;transition:.18s}
footer a:hover{color:#fff}
footer .addr{font-size:15px;line-height:1.7}
footer .addr a{color:var(--sky)}
.fbot{border-top:1px solid var(--rule-light);padding:22px 0;font-family:var(--mono);font-size:12px;color:rgba(255,255,255,.45)}
.fbot .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* ---------- sub-page header ---------- */
.pagehead{background:var(--navy);color:#fff;padding:70px 0 74px}
.pagehead .eyebrow{color:var(--sky)}
.pagehead h1{font-family:var(--display);font-weight:500;font-size:clamp(28px,4.6vw,48px);line-height:1.1;text-transform:uppercase;max-width:20ch}
.pagehead p{margin-top:20px;max-width:60ch;font-size:17px;color:rgba(255,255,255,.8)}
@media(max-width:700px){.pagehead{padding:54px 0 58px}}

/* ---------- expanded service sections ---------- */
.svc{padding:62px 0;border-top:1px solid var(--rule)}
.svc:first-of-type{border-top:0}
.svc-head{display:flex;gap:20px;align-items:flex-start}
.svc-no{font-family:var(--mono);font-size:14px;color:var(--cobalt);flex:0 0 24px;line-height:1.9}
.svc-head .lead{margin-top:14px;color:var(--muted);font-size:17px;max-width:60ch}
.svc-body{display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:start}
@media(max-width:900px){.svc-body{grid-template-columns:1fr;gap:24px}}
.svc-text{margin-top:26px;padding-left:44px}
@media(max-width:900px){.svc-text{margin-top:22px;padding-left:0}}
.svc-text p{color:var(--muted);font-size:16px;line-height:1.62}
.svc-text p+p{margin-top:14px}
.svc-text a{color:var(--cobalt)}
.svc .panel .rows{margin-top:0}

/* ---------- enquiry form ---------- */
.enq{display:grid;grid-template-columns:1.5fr 1fr;gap:32px;align-items:start}
@media(max-width:900px){.enq{grid-template-columns:1fr;gap:26px}}
.enq-lead{color:var(--muted);font-size:17px;line-height:1.62;max-width:60ch;margin-bottom:34px}

.form{background:var(--white);border:1px solid var(--rule);border-radius:var(--r);padding:30px 28px}
@media(max-width:640px){.form{padding:24px 20px}}
.field{margin-bottom:20px}
.field:last-of-type{margin-bottom:26px}
.field label{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.13em;text-transform:uppercase;color:var(--muted);margin-bottom:9px}
.field .req{color:var(--signal);margin-left:4px}
.field input,.field select,.field textarea{
  width:100%;font-family:var(--body);font-size:16px;line-height:1.5;color:var(--ink);
  background:var(--paper);border:1px solid var(--rule);border-radius:var(--r);
  padding:12px 14px;transition:.18s;
}
.field textarea{min-height:150px;resize:vertical}
.field select{
  appearance:none;cursor:pointer;padding-right:40px;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='none' stroke='%235A6172' stroke-width='1.6' d='M1 1.5 6 6.5l5-5'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 15px center;
}
.field input:hover,.field select:hover,.field textarea:hover{border-color:rgba(20,23,28,.28)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:3px solid var(--cobalt);outline-offset:2px;
  border-color:var(--cobalt);background:var(--white);
}
.form .btn{border:1px solid var(--cobalt);cursor:pointer;font-size:15px}
.form-note{margin-top:18px;font-size:14px;line-height:1.55;color:var(--muted)}
.form-note a{color:var(--cobalt)}

/* contact card beside the form */
.enq-contact{background:var(--navy);color:#fff;border-radius:var(--r);padding:30px 28px}
.enq-contact h2{color:#fff;font-size:22px}
.enq-contact .eyebrow{color:var(--sky)}
.enq-contact .big{
  display:block;font-family:var(--display);font-weight:500;font-size:clamp(24px,3vw,30px);
  letter-spacing:.02em;color:#fff;text-decoration:none;margin-top:6px;transition:.18s;
}
.enq-contact .big:hover{color:var(--sky)}
.enq-contact .line{padding:18px 0;border-bottom:1px solid var(--rule-light)}
.enq-contact .line:first-of-type{padding-top:6px}
.enq-contact .line .lbl{font-family:var(--mono);font-size:11px;letter-spacing:.13em;text-transform:uppercase;color:rgba(255,255,255,.5)}
.enq-contact .addr{margin-top:18px;font-size:15px;line-height:1.7;color:rgba(255,255,255,.75)}
.enq-contact .hours{margin-top:16px;font-size:15px;line-height:1.6;color:rgba(255,255,255,.75)}
@media(max-width:900px){.enq-contact{order:-1}}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* Honeypot поле (скрито за хора и екранни четци) */
.hp{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}

/* ---------- за нас ---------- */
.prose p{color:var(--muted);font-size:16px;line-height:1.62}
.prose p+p{margin-top:14px}
.prose a{color:var(--cobalt)}
.stack{display:grid;gap:20px;align-content:start}
a.ref{text-decoration:none;transition:.18s}
a.ref:hover{border-color:var(--cobalt);transform:translateY(-2px)}
a.ref .vol{text-decoration:underline;text-underline-offset:3px}