*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,Helvetica,sans-serif;color:#102238;background:#fff}a{color:inherit}.wrap{max-width:1480px;margin:auto;padding:0 34px}
header{background:#fff;position:sticky;top:0;z-index:20;border-bottom:1px solid #e6ebef}.nav{height:82px;display:flex;align-items:center;justify-content:space-between}.brand{font-size:31px;font-weight:800;letter-spacing:.08em;text-decoration:none}.brand small{display:block;font-size:10px;letter-spacing:0;color:#1686d9}.links{display:flex;gap:34px;align-items:center}.links a{text-decoration:none;font-size:14px}.lang{font-weight:700;color:#087ed0}
.hero{min-height:470px;background:linear-gradient(90deg,rgba(3,24,46,.96) 0%,rgba(3,24,46,.78) 32%,rgba(3,24,46,.08) 66%),url('https://images.pexels.com/photos/15973758/pexels-photo-15973758.jpeg?auto=compress&cs=tinysrgb&w=1800') center/cover;display:flex;align-items:center;color:#fff}.hero-copy{max-width:620px;padding:58px 0}.hero h1{font-size:44px;line-height:1.08;margin:0 0 28px}.hero p{font-size:19px;line-height:1.45;color:#edf4fa}.cta{display:inline-block;background:#0c87e8;padding:14px 18px;border-radius:4px;text-decoration:none;font-weight:700;margin-top:8px}
.services{background:#031d36;color:#fff;padding:24px 0}.service-grid{display:grid;grid-template-columns:repeat(7,1fr)}.service{padding:18px 22px;border-right:1px solid rgba(255,255,255,.25)}.service:last-child{border:0}.service b{display:block;line-height:1.25;margin-bottom:9px}.service p{font-size:12px;color:#d8e4ee;line-height:1.4;margin:0}.icon{font-size:26px;color:#1b92ef;margin-bottom:10px}
.energy-grid{display:grid;grid-template-columns:repeat(5,1fr);height:235px}.energy{position:relative;background-size:cover;background-position:center}.energy:after{content:"";position:absolute;inset:45% 0 0;background:linear-gradient(transparent,rgba(0,0,0,.8))}.energy span{position:absolute;bottom:14px;left:0;right:0;text-align:center;color:#fff;font-weight:800;z-index:2}
.rig{background-image:url('https://images.pexels.com/photos/15973758/pexels-photo-15973758.jpeg?auto=compress&cs=tinysrgb&w=800')}.pump{background-image:url('https://images.pexels.com/photos/16862261/pexels-photo-16862261.jpeg?auto=compress&cs=tinysrgb&w=800')}.data{background-image:url('https://images.pexels.com/photos/4508751/pexels-photo-4508751.jpeg?auto=compress&cs=tinysrgb&w=800')}.wind{background-image:url('https://images.pexels.com/photos/30037320/pexels-photo-30037320.jpeg?auto=compress&cs=tinysrgb&w=800')}.solar{background-image:url('https://images.pexels.com/photos/6876536/pexels-photo-6876536.jpeg?auto=compress&cs=tinysrgb&w=800')}
.info{padding:38px 0}.info-grid{display:grid;grid-template-columns:1.1fr 1.1fr 1.1fr 1fr 1.1fr}.box{padding:0 28px;border-right:1px solid #d9e0e6}.box:last-child{border:0}.box h3{font-size:16px;margin:0 0 18px}.box h3:after{content:"";display:block;width:34px;border-bottom:3px solid #138ae2;padding-top:10px}.box p{font-size:13px;line-height:1.5}.box a{color:#067cd1}.muted{color:#697684;font-style:italic}.timeline b{display:block;margin-top:12px}
footer{background:#031d36;color:#fff;padding:18px 34px;font-size:12px}.footer-inner{max-width:1480px;margin:auto;display:flex;justify-content:space-between;gap:25px}.credits{color:#b9cbd9}
@media(max-width:1000px){.service-grid{grid-template-columns:repeat(2,1fr)}.energy-grid{grid-template-columns:1fr 1fr;height:auto}.energy{height:220px}.info-grid{grid-template-columns:1fr 1fr}.box{border:0;border-bottom:1px solid #ddd;padding:25px}.links a:not(.lang){display:none}}
@media(max-width:650px){.hero h1{font-size:34px}.energy-grid,.info-grid{grid-template-columns:1fr}.service-grid{grid-template-columns:1fr}.footer-inner{display:block}.energy{height:200px}}

.company-note{font-size:12px;color:#687786;margin:10px 0 14px}.company-chips{display:flex;flex-wrap:wrap;gap:8px}
.company-chip{position:relative;display:inline-block;padding:7px 10px;border:1px solid #cbd7df;border-radius:4px;background:#fff;font-weight:700;font-size:12px;cursor:default}
.company-chip.has-detail{border-color:#1686d9;color:#075e9e;cursor:help}.company-chip.has-detail:after{content:"+";margin-left:6px;color:#1686d9}
.company-panel{visibility:hidden;opacity:0;transform:translateY(5px);transition:.18s ease;position:absolute;z-index:50;left:0;bottom:calc(100% + 10px);width:440px;max-width:82vw;background:#fff;color:#102238;border:1px solid #cdd9e2;border-top:4px solid #1686d9;border-radius:6px;padding:18px;box-shadow:0 18px 44px rgba(3,29,54,.22);font-weight:400;line-height:1.45}
.company-panel h4{margin:0 0 8px;font-size:16px}.company-panel p{margin:7px 0;font-size:12px}.company-panel .period{color:#087ed0;font-weight:700}.company-panel .tech{margin-top:11px;color:#526675;font-size:11px}
.company-chip.has-detail:hover .company-panel,.company-chip.has-detail:focus .company-panel,.company-chip.has-detail:focus-within .company-panel{visibility:visible;opacity:1;transform:none}
@media(max-width:650px){.company-panel{position:fixed;left:5vw;right:5vw;bottom:8vh;width:90vw;max-width:none}}

/* V4.1 Experience section */
.experience-section{padding:54px 0;background:#f7f9fb;border-top:1px solid #dfe6ec}
.experience-heading{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:20px}
.experience-heading h2{margin:0;font-size:30px}
.experience-heading p{margin:0;color:#637180;max-width:720px;font-size:14px;line-height:1.55}
.company-selector{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0}
.exp-btn{border:1px solid #c9d6df;background:#fff;padding:10px 14px;border-radius:5px;font-weight:700;font-size:13px;color:#173047;cursor:pointer;transition:.18s ease}
.exp-btn:hover{border-color:#1686d9;transform:translateY(-1px)}
.exp-btn.active{background:#0b6fb5;color:#fff;border-color:#0b6fb5;box-shadow:0 4px 14px rgba(11,111,181,.18)}
.exp-btn.disabled{opacity:.55;cursor:default}
.exp-btn.disabled:hover{transform:none;border-color:#c9d6df}
.case-study{display:none;background:#fff;border:1px solid #d6e0e7;border-radius:7px;padding:28px;box-shadow:0 8px 28px rgba(16,34,56,.06)}
.case-study.active{display:block}
.case-study-header{display:flex;justify-content:space-between;gap:24px;align-items:start;border-bottom:1px solid #e2e8ed;padding-bottom:18px;margin-bottom:20px}
.case-study-header h3{margin:0;font-size:24px}
.case-period{color:#0b6fb5;font-weight:700;white-space:nowrap}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.case-block{background:#f7f9fb;border-left:4px solid #1686d9;padding:18px;border-radius:4px}
.case-block h4{margin:0 0 8px;font-size:15px}
.case-block p{margin:0;font-size:13px;line-height:1.55;color:#3f4f5e}
.case-tech{margin-top:20px;padding-top:14px;border-top:1px solid #e1e7eb;color:#526675;font-size:12px}
.experience-note{margin-top:14px;font-size:11px;color:#6f7c88;font-style:italic}
@media(max-width:800px){
  .case-grid{grid-template-columns:1fr}
  .experience-heading{display:block}
  .case-study-header{display:block}
  .case-period{display:block;margin-top:6px}
}
/* V4 hover panels no longer used */
.company-panel{display:none!important}
.company-chip.has-detail:after{content:""}

/* V4.2 experience selector refinements */
.company-selector{
  display:grid;
  grid-template-columns:repeat(8,minmax(0,1fr));
  gap:10px;
  margin:24px 0 28px;
}
.exp-btn{
  border:0 !important;
  background:transparent;
  padding:11px 8px;
  border-radius:0;
  font-weight:700;
  font-size:13px;
  color:#173047;
  cursor:pointer;
  transition:.18s ease;
  box-shadow:none !important;
  text-align:center;
  border-bottom:2px solid transparent !important;
}
.exp-btn:hover{
  color:#0b6fb5;
  border-bottom-color:#8fc9ef !important;
  transform:none;
}
.exp-btn.active{
  background:transparent;
  color:#0b6fb5;
  border-bottom-color:#0b6fb5 !important;
  box-shadow:none;
}
.exp-btn.disabled{
  opacity:.62;
  cursor:default;
}
.exp-btn.disabled:hover{
  color:#173047;
  border-bottom-color:transparent !important;
}
.case-study{
  border:0 !important;
  box-shadow:none !important;
  border-radius:0;
  padding:26px 0 10px;
  background:transparent;
}
.case-block{
  border:0 !important;
  border-left:0 !important;
  background:transparent;
  padding:0 24px 0 0;
}
.case-grid .case-block:not(:last-child){
  border-right:1px solid #e2e8ed !important;
}
.case-study-header{
  border-bottom:1px solid #e2e8ed;
}
@media(max-width:1200px){
  .company-selector{grid-template-columns:repeat(4,minmax(0,1fr))}
}
@media(max-width:800px){
  .company-selector{grid-template-columns:repeat(2,minmax(0,1fr))}
  .case-grid .case-block:not(:last-child){border-right:0 !important;border-bottom:1px solid #e2e8ed !important;padding-bottom:18px}
}