:root{
    --petrol:#0E3B45;      /* main dark surface, from the logo's deep teal */
    --petrol-deep:#092C34;
    --petrol-line:rgba(226,236,233,.16);
    --concrete:#E7E9E5;    /* page background: cool poured-concrete grey */
    --limestone:#F6F7F4;   /* raised surfaces */
    --asphalt:#24292B;     /* text */
    --asphalt-soft:#56605F;
    --rule:#C9CDC7;
    --field:#1E8A4F;       /* logo green: actions only */
    --field-dark:#16703F;
    --balast:#C8A46A;      /* sand/gravel: illustration + small highlights */
    --mist:#B9CFCB;        /* light text on petrol */
    --sans:"Barlow", "Helvetica Neue", Arial, sans-serif;
    --cond:"Barlow Condensed", "Arial Narrow", sans-serif;
    --wrap:1200px;
    --gut:clamp(18px,4vw,44px);
  }
  *,*::before,*::after{box-sizing:border-box}
  *{margin:0;padding:0}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:92px}
  body{font-family:var(--sans);font-size:18px;line-height:1.6;color:var(--asphalt);background:var(--concrete);-webkit-font-smoothing:antialiased;overflow-x:hidden;font-variant-numeric:tabular-nums}
  img,svg{display:block;max-width:100%}
  a{color:inherit}
  :focus-visible{outline:3px solid var(--balast);outline-offset:3px;border-radius:2px}
  .skip{position:absolute;left:-999px;top:8px;background:var(--limestone);padding:10px 16px;z-index:100}
  .skip:focus{left:8px}
  .wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}

  h1,h2,h3{font-family:var(--cond);font-weight:600;line-height:1;letter-spacing:-.005em}
  h2{font-size:clamp(40px,5.4vw,67px);max-width:16ch}
  h3{font-size:28px;line-height:1.1;font-weight:600}
  p{max-width:62ch}
  .intro{font-size:21px;line-height:1.5;color:var(--asphalt-soft);max-width:52ch}

  .btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 26px;border-radius:3px;font-family:var(--cond);font-size:21px;font-weight:600;letter-spacing:.01em;text-decoration:none;border:2px solid transparent;cursor:pointer}
  .btn-go{background:var(--field);color:#fff}
  .btn-go:hover{background:var(--field-dark)}
  .btn-line{border-color:rgba(226,236,233,.45);color:#fff}
  .btn-line:hover{border-color:#fff}

  /* ---------- header ---------- */
  .top{position:sticky;top:0;z-index:40;background:var(--petrol);border-bottom:1px solid var(--petrol-line)}
  .top .wrap{display:flex;align-items:center;justify-content:space-between;height:76px;gap:24px}
  .top .logo img{height:58px;width:auto}
  .menu{display:flex;align-items:center;gap:30px;list-style:none}
  .menu a{color:var(--mist);text-decoration:none;font-size:16px;font-weight:500}
  .menu a:hover{color:#fff}
  .menu .phone{color:#fff;font-weight:600;font-size:17px}
  .menu .btn{min-height:44px;padding:0 18px;font-size:19px;color:#fff}
  .menu .lang{font-weight:600;color:#fff;border:1px solid var(--petrol-line);border-radius:3px;padding:6px 10px;font-size:14px;letter-spacing:.02em}
  .menu .lang:hover{border-color:var(--mist)}
  .call-m{display:none;color:#fff;width:44px;height:44px;place-items:center}
  .call-m svg{width:24px;height:24px}
  .burger{display:none;background:none;border:0;color:#fff;width:44px;height:44px;cursor:pointer}
  .burger svg{width:28px;height:28px;margin:auto}

  /* ---------- hero ---------- */
  .hero{position:relative;background:var(--petrol);color:#fff;overflow:hidden;isolation:isolate}
  .hero-topo{position:absolute;right:-6%;bottom:-18%;width:min(980px,80vw);z-index:-1;opacity:.5;pointer-events:none}
  .hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:clamp(36px,6vw,96px);align-items:center;padding-top:clamp(64px,9vw,128px);padding-bottom:clamp(64px,9vw,128px)}
  .hero-firm{font-size:17px;font-weight:500;color:var(--mist);margin-bottom:22px;display:flex;align-items:center;gap:12px}
  .hero-firm::before{content:"";width:28px;height:2px;background:var(--balast)}
  .hero h1{font-size:clamp(46px,6vw,84px);font-weight:600;line-height:.98;letter-spacing:-.01em;max-width:15ch}
  .hero .intro{color:var(--mist);font-size:clamp(19px,1.6vw,22px);margin-top:26px;max-width:46ch}
  .hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px}
  .creds{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--petrol-line);background:rgba(9,44,52,.55);backdrop-filter:blur(2px)}
  .creds div{padding:26px 24px 24px;border-bottom:1px solid var(--petrol-line)}
  .creds div:nth-child(odd){border-right:1px solid var(--petrol-line)}
  .creds div:nth-last-child(-n+2){border-bottom:0}
  .creds dt{font-family:var(--cond);font-size:clamp(36px,3.4vw,48px);font-weight:600;line-height:1;color:#fff}
  .creds dt small{font-size:.5em;font-weight:500;color:var(--mist);margin-left:4px}
  .creds dd{margin-top:8px;font-size:15.5px;line-height:1.4;color:var(--mist)}
  .creds .wide{grid-column:1 / -1;border-right:0!important;display:flex;align-items:center;gap:14px;background:rgba(200,164,106,.12)}
  .creds .wide dd{margin:0;color:#fff;font-size:17px;font-weight:500}
  .creds .wide svg{flex:none;width:30px;height:30px;color:var(--balast)}

  /* ---------- sections ---------- */
  .block{padding:clamp(80px,10vw,136px) 0}
  .block-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;align-items:end;margin-bottom:clamp(44px,6vw,72px)}
  .block-head .intro{justify-self:end}

  /* roles */
  .roles{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(24px,3vw,44px);margin-top:clamp(44px,6vw,72px)}
  .role{border-top:4px solid var(--asphalt);padding-top:22px}
  .role h3{margin-bottom:10px}
  .role p{color:var(--asphalt-soft);font-size:17px}

  /* services */
  .services{background:var(--limestone)}
  .svc-list{list-style:none;border-top:2px solid var(--asphalt)}
  .svc-list li{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr) minmax(0,3fr);gap:32px;padding:30px 0;border-bottom:1px solid var(--rule);align-items:baseline}
  .svc-list h3{font-size:clamp(28px,3vw,37px)}
  .svc-list p{color:var(--asphalt-soft)}
  .svc-list .proof{font-size:15px;color:var(--petrol);font-weight:600;line-height:1.4}

  /* projects */
  .projects-grid{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,5fr);gap:clamp(32px,5vw,72px);align-items:start}
  .map{position:sticky;top:104px;background:var(--petrol);border-radius:4px;padding:18px 18px 12px;color:#fff}
  .map svg{width:100%;height:auto}
  .map .cap{font-size:14px;color:var(--mist);padding:8px 6px 0}
  .pin circle{fill:var(--limestone);stroke:var(--petrol);stroke-width:2;transition:fill .2s}
  .pin text{font-family:var(--cond);font-weight:700;font-size:15px;fill:var(--petrol);text-anchor:middle;dominant-baseline:central;pointer-events:none}
  .pin.live circle{fill:var(--balast)}
  .pin.on circle{fill:var(--field)}
  .pin.on text{fill:#fff}
  .proj-group+.proj-group{margin-top:48px}
  .proj-group h3{font-size:24px;padding-bottom:12px;border-bottom:2px solid var(--asphalt)}
  .proj{display:grid;grid-template-columns:44px 1fr;gap:16px;padding:20px 0;border-bottom:1px solid var(--rule)}
  .proj .k{font-family:var(--cond);font-weight:700;font-size:18px;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--limestone);border:2px solid var(--petrol);color:var(--petrol);transition:background .2s,color .2s,border-color .2s}
  .proj.live .k{background:var(--balast);border-color:var(--balast)}
  .proj.on .k{background:var(--field);border-color:var(--field);color:#fff}
  .proj h4{font-family:var(--cond);font-size:25px;font-weight:600;line-height:1.1}
  .proj .where{font-size:15px;color:var(--asphalt-soft);font-weight:500;margin-top:2px}
  .proj p{font-size:16.5px;color:var(--asphalt-soft);margin-top:8px}
  .proj .figure{display:flex;gap:14px;align-items:baseline;margin-top:12px;padding:12px 14px;background:var(--limestone);border-left:4px solid var(--balast)}
  .proj .figure b{font-family:var(--cond);font-size:30px;font-weight:600;color:var(--asphalt);white-space:nowrap}
  .proj .figure span{font-size:14.5px;color:var(--asphalt-soft);line-height:1.35}

  /* base */
  .base{background:var(--petrol);color:#fff}
  .base .intro{color:var(--mist)}
  .base-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(32px,5vw,80px);align-items:start}
  .spec{width:100%;border-collapse:collapse}
  .spec caption{text-align:left;font-family:var(--cond);font-size:24px;font-weight:600;padding-bottom:12px;border-bottom:2px solid #fff}
  .spec th,.spec td{padding:15px 0;border-bottom:1px solid var(--petrol-line);text-align:left;vertical-align:baseline}
  .spec th{font-weight:500;color:var(--mist);font-size:17px;padding-right:16px}
  .spec td{font-family:var(--cond);font-size:24px;font-weight:600;text-align:right;white-space:nowrap}
  .spec td small{font-family:var(--sans);font-size:15px;font-weight:500;color:var(--mist)}
  .flow h3{font-size:24px;padding-bottom:12px;border-bottom:2px solid #fff;margin-bottom:22px}
  .flow svg{width:100%;height:auto}
  .flow svg text{font-family:var(--sans);font-size:14px;fill:var(--mist)}
  .flow svg .n{font-family:var(--cond);font-size:20px;font-weight:600;fill:#fff}
  .flow .note{font-size:16px;color:var(--mist);margin-top:18px}

  /* fleet */
  .fleet-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(32px,5vw,80px)}
  .fleet{list-style:none;columns:2;column-gap:40px;border-top:2px solid var(--asphalt)}
  .fleet li{break-inside:avoid;padding:16px 0;border-bottom:1px solid var(--rule);font-family:var(--cond);font-size:25px;font-weight:600;line-height:1.15}
  .fleet li span{display:block;font-family:var(--sans);font-size:15px;font-weight:500;color:var(--asphalt-soft);margin-top:3px}
  .fleet-note{margin-top:20px;font-size:16px;color:var(--asphalt-soft)}

  .supply{margin-top:clamp(64px,8vw,104px);padding-top:28px;border-top:2px solid var(--asphalt);display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:40px;align-items:center}
  .supply p{font-size:17px;color:var(--asphalt-soft)}
  .names{display:flex;flex-wrap:wrap;gap:12px 40px;font-family:var(--cond);font-weight:700;font-size:clamp(30px,3.6vw,44px);color:#8D9592;letter-spacing:.01em}

  /* process */
  .process{background:var(--limestone)}
  .steps{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(20px,3vw,40px);counter-reset:step}
  .steps li{counter-increment:step;border-top:4px solid var(--asphalt);padding-top:18px}
  .steps li::before{content:counter(step);display:block;font-family:var(--cond);font-size:56px;font-weight:600;line-height:1;color:var(--field);margin-bottom:14px}
  .steps h3{margin-bottom:8px;font-size:26px}
  .steps p{font-size:17px;color:var(--asphalt-soft)}

  /* contact */
  .contact{background:var(--petrol);color:#fff}
  .contact-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:clamp(32px,6vw,96px);align-items:end}
  .contact h2{font-size:clamp(52px,7.4vw,104px);max-width:12ch;line-height:.92}
  .contact .intro{color:var(--mist);margin:22px 0 30px}
  .lines{list-style:none;border-top:2px solid #fff}
  .lines li{border-bottom:1px solid var(--petrol-line)}
  .lines a,.lines div{display:block;padding:18px 0;text-decoration:none}
  .lines small{display:block;font-size:15px;color:var(--mist)}
  .lines strong{display:block;font-family:var(--cond);font-size:clamp(26px,2.6vw,34px);font-weight:600;line-height:1.15}
  .lines a:hover strong{color:var(--balast)}

  footer{background:var(--petrol-deep);color:var(--mist);font-size:15px}
  footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:20px;padding-top:28px;padding-bottom:28px}
  footer img{height:64px;width:auto}
  footer a{text-decoration:none}
  footer a:hover{color:#fff}

  /* ---------- responsive ---------- */
  @media (max-width:1020px){
    .menu .hide-md{display:none}
    .projects-grid{grid-template-columns:1fr}
    .map{position:relative;top:0}
    .svc-list li{grid-template-columns:minmax(0,1fr) minmax(0,1.4fr)}
    .svc-list .proof{grid-column:2}
  }
  @media (max-width:820px){
    body{font-size:17px}
    .top .wrap{display:grid;grid-template-columns:44px 1fr 44px;height:84px;gap:8px}
    .top .wrap>*{grid-row:1}
    .call-m{display:grid;grid-column:1}
    .top .logo{grid-column:2;justify-self:center}
    .top .logo img{height:68px}
    .burger{display:block;grid-column:3}
    .menu{display:none;position:absolute;left:0;right:0;top:84px;flex-direction:column;align-items:stretch;gap:0;background:var(--petrol);border-bottom:1px solid var(--petrol-line);padding:8px var(--gut) 20px}
    .menu.open{display:flex}
    .menu li{border-bottom:1px solid var(--petrol-line)}
    .menu li:last-child{border:0;padding-top:16px}
    .menu a{display:block;padding:14px 0;font-size:18px}
    .menu .hide-md{display:block}
    .menu .btn{width:100%;min-height:52px}
    .hero-grid,.block-head,.base-grid,.fleet-grid,.contact-grid,.supply{grid-template-columns:1fr}
    .block-head .intro{justify-self:start}
    .roles{grid-template-columns:1fr}
    .steps{grid-template-columns:1fr 1fr;row-gap:36px}
  }
  @media (max-width:560px){
    .top .logo img{height:64px}
    .svc-list li{grid-template-columns:1fr;gap:8px}
    .svc-list .proof{grid-column:auto}
    .fleet{columns:1}
    .steps{grid-template-columns:1fr}
    .hero-cta .btn{flex:1 1 100%}
    .spec td{font-size:21px}
  }
  @media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}