:root{
  --ink:#0b1821;
  --ink-2:#142a36;
  --blue:#0e238b;
  --blue-2:#0d87c9;
  --sky:#eaf4f8;
  --paper:#fff;
  --mist:#f5f7f8;
  --line:#dfe7ea;
  --muted:#62717a;
  --max:1240px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Inter,Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.65}
img{max-width:100%;display:block}
a{color:inherit}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}
.progress{position:fixed;top:0;left:0;height:2px;background:var(--blue-2);z-index:2000;width:0}
.site-nav{position:fixed;top:0;left:0;width:100%;height:78px;z-index:1000;background:rgba(255,255,255,.96);backdrop-filter:blur(14px);border-bottom:1px solid rgba(223,231,234,.9)}
.nav-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:30px}
.brand{display:flex;align-items:center;width:150px;height:100px}
.brand img{width:100%;height:100%;object-fit:contain;object-position:left center}
.nav-links{display:flex;align-items:center;gap:34px;list-style:none}
.nav-links a{font-size:.78rem;font-weight:600;text-decoration:none;color:#52616a;letter-spacing:.04em;transition:.2s; text-transform:uppercase}
.nav-links a:hover,.nav-links a.active{color:var(--blue)}
.nav-dropdown{position:relative}
.dropdown{position:absolute;top:calc(100% + 18px);left:-18px;min-width:240px;background:#fff;border:1px solid var(--line);box-shadow:0 18px 50px rgba(10,24,33,.12);padding:10px;opacity:0;visibility:hidden;transform:translateY(-8px);transition:.2s;list-style:none}
.nav-dropdown:hover .dropdown{opacity:1;visibility:visible;transform:none}
.dropdown a{display:block;padding:11px 12px;border-radius:5px}
.dropdown a:hover{background:var(--mist)}
.menu-toggle{display:none;background:none;border:0;font-size:25px;color:var(--ink);cursor:pointer}
.hero{min-height:760px;height:calc(100vh - 78px);max-height:960px;position:relative;display:flex;align-items:center;overflow:hidden;color:#fff}
.hero-bg{position:absolute;inset:0;background-image:url('../images/hero.png');background-position:54% 52%;background-size:cover;background-repeat:no-repeat;transform:scale(1.015)}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(3,22,43,.88) 0%,rgba(3,25,47,.78) 23%,rgba(3,27,49,.55) 42%,rgba(3,27,49,.20) 59%,rgba(3,27,49,0) 78%)}
.hero-content{position:relative;z-index:2;padding-top:20px;padding-left:24px;max-width:810px;text-align:left;margin:0!important;width:auto}
.hero h2{font-size:clamp(3rem,5vw,4.55rem);line-height:1.03;letter-spacing:-.05em;font-weight:700;max-width:800px;color:#fff}
.hero p{max-width:680px;margin-top:28px;font-size:1.05rem;line-height:1.75;color:rgba(255,255,255,.9)}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:36px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 24px;text-decoration:none;border:1px solid transparent;font-size:.76rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;transition:.2s}
.btn-primary{background:#075fe7;color:#fff;border-color:#075fe7}
.hero .btn-primary{min-width:305px;justify-content:space-between;padding:0 28px}.hero .btn-primary:after{content:'→';font-size:1.35rem;font-weight:400;margin-left:24px}.hero .btn-primary:hover{background:#075fe7;border-color:#075fe7}
.btn-primary:hover{background:#085c90;border-color:#085c90;transform:translateY(-1px)}
.btn-light{background:#fff;color:var(--ink);border-color:#fff}
.btn-light:hover{background:#eef6f9}
.btn-ghost{color:#fff;border-color:rgba(255,255,255,.45)}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.hero-scroll{display:none}
.section{padding:110px 0}
.section.mist{background:var(--mist)}
.section.dark{background:var(--ink);color:#fff}
.kicker{display:flex;align-items:center;gap:11px;text-transform:uppercase;letter-spacing:.18em;font-size:.66rem;font-weight:700;color:var(--blue);margin-bottom:18px}
.kicker:before{content:"";width:30px;height:1px;background:var(--blue)}
h2{font-size:clamp(2.2rem,4.4vw,4.2rem);line-height:1.04;letter-spacing:-.045em;font-weight:700}
.lead{font-size:1.03rem;color:var(--muted);max-width:720px;line-height:1.85;margin-top:22px}
.section-head{display:flex;justify-content:space-between;gap:40px;align-items:end;margin-bottom:54px}
.section-head .lead{max-width:600px;margin-top:0}
.intro-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:80px;align-items:center}
.image-frame{position:relative;overflow:hidden;min-height:520px}
.image-frame img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.image-caption{position:absolute;left:22px;bottom:22px;background:rgba(8,25,35,.9);color:#fff;padding:16px 20px;font-size:.72rem;letter-spacing:.08em;text-transform:uppercase}
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.service-card{background:#fff;min-height:390px;display:flex;flex-direction:column;overflow:hidden;text-decoration:none}
.service-card .service-image{height:180px;overflow:hidden}
.service-card .service-image img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.service-card:hover .service-image img{transform:scale(1.04)}
.service-body{padding:30px;display:flex;flex:1;flex-direction:column}
.service-num{font-size:.65rem;color:var(--blue);font-weight:700;letter-spacing:.16em}
.service-body h3{font-size:1.35rem;margin-top:8px;letter-spacing:-.02em}
.service-body p{font-size:.9rem;color:var(--muted);margin-top:12px;line-height:1.75}
.service-link{margin-top:auto;padding-top:22px;color:var(--blue);font-size:.7rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase}
.approach-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line);border-left:1px solid var(--line);margin-top:50px}
.approach-card{padding:28px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);min-height:220px}
.approach-no{font-size:.66rem;color:var(--blue);font-weight:700;letter-spacing:.15em}
.approach-card h3{font-size:1.05rem;margin-top:28px}
.approach-card p{font-size:.85rem;color:var(--muted);margin-top:9px}
.cta{position:relative;overflow:hidden;color:#fff;padding:92px 0}
.cta-bg{position:absolute;inset:0;background:linear-gradient(90deg,rgba(6,23,32,.88),rgba(6,23,32,.64)),url('../images/cta-bg.jpg') center/cover}
.cta-inner{position:relative;z-index:1;display:flex;justify-content:space-between;align-items:center;gap:50px}
.cta h2{max-width:760px}
.cta p{max-width:650px;color:rgba(255,255,255,.75);margin-top:15px}
.footer{background:#08141c;color:#dce7eb;padding:72px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.5fr .7fr .9fr;gap:70px}
.footer-brand img{width:150px;height:70px;object-fit:contain;object-position:left center;filter:brightness(0) invert(1)}
.footer-brand p{max-width:420px;color:#8fa1aa;font-size:.85rem;margin-top:18px}
.footer h4{font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:#fff;margin-bottom:17px}
.footer ul{list-style:none}
.footer li{margin:8px 0;color:#91a1a9;font-size:.82rem}
.footer a{text-decoration:none}
.footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:55px;padding-top:18px;display:flex;justify-content:space-between;color:#71838c;font-size:.72rem}
.page-hero{padding:170px 0 92px;background:var(--mist);border-bottom:1px solid var(--line)}
.page-hero h1{max-width:950px}
.page-hero p{max-width:720px;margin-top:24px;color:var(--muted);font-size:1rem;line-height:1.85}
.split{display:grid;grid-template-columns:1fr 1fr;gap:90px;align-items:start}
.mission-box{padding:38px;background:var(--ink);color:#fff}
.mission-box .label{color:#8fd2ed;text-transform:uppercase;font-size:.66rem;letter-spacing:.17em;font-weight:700}
.mission-box p{font-size:1.45rem;line-height:1.35;margin-top:18px}
.vision-box{padding:38px;background:var(--sky)}
.vision-box .label{color:var(--blue);text-transform:uppercase;font-size:.66rem;letter-spacing:.17em;font-weight:700}
.vision-box p{font-size:1.3rem;line-height:1.45;margin-top:18px}
.values-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line);margin-top:50px}
.value{padding:32px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);min-height:220px}
.value span{font-size:1rem;color:var(--blue);font-weight:700;letter-spacing:.14em}
.value h3{font-size:2rem;margin-top:25px}
.value p{font-size:1rem;color:var(--muted);margin-top:9px}
.product-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:48px}
.product-card{padding:34px;background:#fff;border:1px solid var(--line);position:relative}
.product-card:before{content:"";position:absolute;top:0;left:0;width:3px;height:100%;background:var(--blue)}
.product-card h3{font-size:1.25rem}
.product-list{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}
.pill{padding:7px 10px;background:var(--mist);font-size:.7rem;font-weight:700;color:#455861}
.product-card p{font-size:.87rem;color:var(--muted)}
.detail-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:45px}
.detail-card{padding:30px;border:1px solid var(--line)}
.detail-card h3{font-size:1.05rem}
.detail-card p,.detail-card li{font-size:.87rem;color:var(--muted);margin-top:8px}
.detail-card ul{padding-left:18px}
.contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px}
.contact-list{margin-top:34px;border-top:1px solid var(--line)}
.contact-item{padding:20px 0;border-bottom:1px solid var(--line)}
.contact-item small{display:block;color:var(--blue);font-size:.63rem;letter-spacing:.15em;text-transform:uppercase;font-weight:700}
.contact-item p,.contact-item a{display:block;margin-top:5px;font-size:.92rem;text-decoration:none}
.form{border:1px solid var(--line);padding:34px;background:#fff}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-size:.67rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:#52616a}
.field input,.field select,.field textarea{font:inherit;border:1px solid #ccd8dc;padding:13px 14px;background:#fff;color:var(--ink);outline:none}
.field textarea{min-height:150px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--blue)}
.form .btn{margin-top:20px}
.note{font-size:.78rem;color:var(--muted);margin-top:13px}
@media(max-width:900px){
  .nav-links{gap:20px}
  .services-grid{grid-template-columns:1fr}
  .intro-grid,.split,.contact-grid{grid-template-columns:1fr;gap:45px}
  .approach-grid,.values-grid{grid-template-columns:1fr 1fr}
  .section-head{align-items:start;flex-direction:column}
  .cta-inner{flex-direction:column;align-items:flex-start}
}
@media(max-width:700px){
  .container{width:min(var(--max),calc(100% - 32px))}
  .site-nav{height:70px}
  .brand{width:135px;height:54px}
  .menu-toggle{display:block}
  .nav-links{position:absolute;top:70px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);display:none;flex-direction:column;align-items:stretch;gap:0;padding:10px 16px 16px}
  .nav-links.open{display:flex}
  .nav-links>li>a{display:block;padding:12px 4px}
  .nav-dropdown .dropdown{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:0;padding:0 0 4px 14px;display:block;min-width:0}
  .hero{min-height:720px;height:calc(100vh - 70px)}
  .hero-bg{background-position:62% center}
  .hero-overlay{background:linear-gradient(90deg,rgba(3,22,43,.9) 0%,rgba(3,25,47,.72) 52%,rgba(3,27,49,.34) 100%)}
  .hero-content{padding-top:55px;padding-left:16px;padding-right:16px}
  h1{font-size:clamp(2.7rem,13vw,4.3rem)}
  .hero-scroll{display:none}
  .section{padding:78px 0}
  .approach-grid,.values-grid,.product-grid,.detail-grid,.form-grid{grid-template-columns:1fr}
  .field.full{grid-column:auto}
  .image-frame{min-height:380px}
  .page-hero{padding:135px 0 70px}
  .footer-grid{grid-template-columns:1fr;gap:35px}
  .footer-bottom{flex-direction:column;gap:8px}
}
/* Requested site-wide refinements */
.image-collage{position:relative;min-height:520px;padding-right:18%;padding-bottom:15%}
.image-collage .image-frame{min-height:520px}
.image-collage .image-frame-small{position:absolute;right:0;bottom:0;width:48%;height:48%;min-height:0;border:10px solid #fff}
.image-caption{z-index:2}
.footer-grid-4{grid-template-columns:1.3fr .65fr .85fr 1.7fr}
.footer-legal{font-size:.75rem!important;line-height:1.7;color:#71838c!important;margin-top:18px!important}
.footer-legal-row a{color:inherit}
.footer-contact{min-width:0}
.footer-email{display:block;color:#91a1a9;font-size:.82rem;margin-bottom:18px;word-break:break-word}
.footer-locations{display:flex;flex-direction:column;gap:11px}
.footer-location{display:flex;flex-direction:column;gap:2px;color:#91a1a9;font-size:.78rem;line-height:1.45}
.footer-location strong{color:#fff;font-size:.72rem;letter-spacing:.03em}
.footer-phones{display:grid;grid-template-columns:auto 1fr;column-gap:10px;row-gap:5px;margin-top:18px;color:#91a1a9;font-size:.78rem;line-height:1.4}
.footer-phones strong{color:#fff;grid-row:1 / span 2}
.footer-phones span{white-space:nowrap}

.service-sections{background:var(--mist)}
.service-feature{display:grid;grid-template-columns:1fr 1fr;min-height:680px}
.service-feature:nth-child(odd){background:#fff}
.service-feature-reverse .service-feature-image{order:2}
.service-feature-image{min-height:680px;overflow:hidden}
.service-feature-image img{width:100%;height:100%;object-fit:cover}
.service-feature-copy{padding:90px clamp(32px,7vw,110px);display:flex;flex-direction:column;justify-content:center}
.service-feature-copy h2{max-width:760px}
.service-feature-copy>p{max-width:650px;color:var(--muted);line-height:1.85;margin:22px 0 22px}
.service-feature-copy ul{padding-left:18px;margin:0 0 30px;color:var(--muted);line-height:1.9;font-size:.9rem}
.service-feature-copy .btn{align-self:flex-start}
@media(max-width:900px){.footer-grid-4{grid-template-columns:1fr 1fr 1fr}.service-feature{grid-template-columns:1fr}.service-feature-reverse .service-feature-image{order:0}.service-feature-image{min-height:440px}.service-feature-copy{padding:70px 40px}}
@media(max-width:700px){.footer-phones{grid-template-columns:auto 1fr}.image-collage{min-height:380px;padding-right:10%;padding-bottom:18%}.image-collage .image-frame{min-height:380px}.image-collage .image-frame-small{width:50%;height:48%;border-width:7px}.footer-grid-4{grid-template-columns:1fr}.service-feature-image{min-height:340px}.service-feature-copy{padding:60px 24px}}


/* About page image storytelling */
.about-feature{display:grid;grid-template-columns:.9fr 1.1fr;gap:80px;align-items:center}
.about-feature-reverse{grid-template-columns:1.1fr .9fr}
.about-feature-reverse .about-copy{order:2}
.about-copy .lead + .lead{margin-top:16px}
.about-copy h2{max-width:650px}

.image-collage{position:relative;width:100%;height:560px;min-height:0;padding:0}
.collage-image{position:absolute;overflow:hidden;background:var(--mist)}
.collage-image img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.collage-image:hover img{transform:scale(1.04)}
.collage-image-main{left:0;top:0;width:62%;height:72%}
.collage-image-small{right:0;bottom:0;width:45%;height:47%;border:10px solid var(--paper)}
.collage-image-accent{right:14%;top:8%;width:25%;height:30%;border:8px solid var(--paper)}
.collage-image-detail{left:8%;bottom:0;width:29%;height:28%;border:8px solid var(--paper)}
.mission-collage{height:500px}
.mission-collage .collage-image-main{width:64%;height:78%}
.mission-collage .collage-image-small{width:43%;height:46%}
.mission-collage .collage-image-accent{right:0;top:2%;width:30%;height:34%;border-width:8px}

.vision-image{height:520px;overflow:hidden}
.vision-image img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.vision-image:hover img{transform:scale(1.03)}

@media(max-width:900px){
  .about-feature,.about-feature-reverse{grid-template-columns:1fr;gap:45px}
  .about-feature-reverse .about-copy{order:0}
  .image-collage{height:500px}
  .vision-image{height:440px}
}
@media(max-width:700px){
  .image-collage{height:390px}
  .collage-image-small{border-width:7px}
  .collage-image-accent{border-width:6px}
  .collage-image-detail{border-width:6px}
  .vision-image{height:340px}
}


/* Shared side-by-side image collage */
.home-who-collage,
.image-collage.who-collage,
.image-collage.mission-collage{
  display:grid;
  grid-template-columns:repeat(4, minmax(0, 1fr));
  gap:10px;
  align-items:start;
  height:auto;
  min-height:0;
  padding:0;
}
.home-who-image,
.image-collage.who-collage .collage-image,
.image-collage.mission-collage .collage-image{
  position:relative;
  left:auto; right:auto; top:auto; bottom:auto;
  width:auto;
  height:520px;
  overflow:hidden;
  background:var(--mist);
  border:0;
}
.image-collage.who-collage .collage-image,
.image-collage.mission-collage .collage-image{display:block}
.home-who-image:nth-child(2),
.image-collage.who-collage .collage-image:nth-child(2),
.image-collage.mission-collage .collage-image:nth-child(2){margin-top:38px}
.home-who-image:nth-child(3),
.image-collage.who-collage .collage-image:nth-child(3),
.image-collage.mission-collage .collage-image:nth-child(3){margin-top:76px}
.home-who-image:nth-child(4),
.image-collage.who-collage .collage-image:nth-child(4),
.image-collage.mission-collage .collage-image:nth-child(4){margin-top:38px}
.home-who-image img,
.image-collage.who-collage .collage-image img,
.image-collage.mission-collage .collage-image img{width:100%;height:100%;object-fit:cover;display:block}
.home-who-label{margin-top:22px;font-size:.68rem;text-align:center;letter-spacing:.18em;font-weight:700;background: var(--blue) ;color:#fff; padding: 16px 20px; left: 22px;bottom: 22px;text-transform:uppercase}
@media(max-width:900px){
  .home-who-collage,.image-collage.who-collage,.image-collage.mission-collage{gap:8px}
  .home-who-image,.image-collage.who-collage .collage-image,.image-collage.mission-collage .collage-image{height:430px}
  .home-who-image:nth-child(2),.image-collage.who-collage .collage-image:nth-child(2),.image-collage.mission-collage .collage-image:nth-child(2){margin-top:28px}
  .home-who-image:nth-child(3),.image-collage.who-collage .collage-image:nth-child(3),.image-collage.mission-collage .collage-image:nth-child(3){margin-top:56px}
  .home-who-image:nth-child(4),.image-collage.who-collage .collage-image:nth-child(4),.image-collage.mission-collage .collage-image:nth-child(4){margin-top:28px}
}
@media(max-width:700px){
  .home-who-collage,.image-collage.who-collage,.image-collage.mission-collage{grid-template-columns:repeat(2,1fr);gap:8px}
  .home-who-image,.image-collage.who-collage .collage-image,.image-collage.mission-collage .collage-image{height:260px}
  .home-who-image:nth-child(n+2),.image-collage.who-collage .collage-image:nth-child(n+2),.image-collage.mission-collage .collage-image:nth-child(n+2){margin-top:0}
}

/* About page — desktop collage: human + refinery are the centered visual focus. */
@media (min-width: 901px){
  .image-collage.who-collage{
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:10px;
    align-items:start;
    height:620px;
  }
  .image-collage.who-collage .collage-image{
    grid-row:1;
    width:auto;
    overflow:hidden;
  }
  /* Keep the original image order: worker | human | refinery | safety worker. */
  .image-collage.who-collage .collage-image:nth-child(1){
    grid-column:1;
    height:520px;
    margin-top:50px;
  }
  .image-collage.who-collage .collage-image:nth-child(2){
    grid-column:2;
    height:620px;
    margin-top:0;
  }
  .image-collage.who-collage .collage-image:nth-child(3){
    grid-column:3;
    height:620px;
    margin-top:0;
  }
  .image-collage.who-collage .collage-image:nth-child(4){
    grid-column:4;
    height:520px;
    margin-top:50px;
  }
  /* Center the key subjects rather than letting the narrow panels crop them off-center. */
  .image-collage.who-collage .collage-image:nth-child(2) img{object-position:center center;}
  .image-collage.who-collage .collage-image:nth-child(3) img{object-position:center center;}
}