/* PETROVEX shared palette and desktop layout */
:root{--navy:#192d43;--navy-deep:#102638;--gold:#c49a61;--ivory:#ece9e0;--ink:#172a3e;--line:rgba(166,133,84,.26);--content:1280px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:24px}
body{margin:0;background:var(--ivory);color:var(--ink);font-family:Georgia,'Times New Roman',serif;font-size:17px;line-height:1.48}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;object-fit:cover;background:#d9d6cf;color:var(--ink);font:14px/1.5 Arial,sans-serif}
button,summary{-webkit-tap-highlight-color:transparent}
button{font:inherit}
:focus-visible{outline:3px solid var(--gold);outline-offset:5px}
h1,h2,h3,p{margin:0}
h1,h2,h3{font-weight:400;line-height:1.08}
h1{font-size:clamp(36px,4.5vw,64px);text-transform:uppercase;letter-spacing:-.025em}
h2{font-size:clamp(29px,3.15vw,46px);letter-spacing:-.025em;margin-bottom:19px}
h3{font-size:18px;line-height:1.3}
p+p{margin-top:14px}
.container{width:min(var(--content),calc(100% - 96px));margin-inline:auto}
.section{padding:40px 0;border-bottom:1px solid var(--line)}
.gold-rule{display:block;width:48px;height:2px;background:var(--gold);margin-bottom:18px}
.button{display:inline-flex;justify-content:center;align-items:center;gap:24px;background:var(--gold);color:#122638;min-height:46px;padding:11px 22px;border:1px solid var(--gold);font-size:15px;line-height:1.4;transition:background .2s,color .2s}
.button:hover{background:#d4b281}
.button-outline{background:transparent;color:var(--ivory)}
.button-outline:hover{background:var(--gold);color:var(--navy)}
.actions{display:flex;gap:16px;flex-wrap:wrap;margin-top:24px}
.text-link{display:inline-flex;gap:12px;color:#806034;border-bottom:1px solid currentColor;margin-top:22px}
.text-link:hover{color:var(--ink)}
.skip-link{position:absolute;left:16px;top:-100px;z-index:20;padding:12px;background:var(--ivory);color:var(--navy)}
.skip-link:focus{top:12px}
.site-header{position:absolute;inset:0 0 auto;z-index:10;color:var(--ivory);padding:20px 3%;min-height:84px}
.wordmark{font-size:27px;letter-spacing:.27em;white-space:nowrap}
.site-header>.wordmark{position:absolute;left:50%;top:19px;transform:translateX(-50%)}
#site-nav{display:flex;justify-content:space-between;align-items:center;gap:210px}
.nav-left,.nav-right{display:flex;align-items:center;gap:24px}
.nav-left,.nav-right>a:not(.button){font:10px/1.5 Arial,sans-serif;text-transform:uppercase;letter-spacing:.07em}
.nav-right .button{font-size:12px;padding:10px 18px;min-height:40px}
.dropdown{position:relative}
.dropdown summary{cursor:pointer;list-style:none;padding:10px 0}
.dropdown summary::-webkit-details-marker{display:none}
.dropdown summary::after{content:'⌄';margin-left:7px}
.dropdown[open] summary{color:var(--gold)}
.dropdown-panel{position:absolute;left:0;top:100%;min-width:275px;padding:10px;background:var(--navy-deep);border-top:2px solid var(--gold);box-shadow:0 12px 30px #0003}
.dropdown-panel a{display:block;padding:12px;font-size:12px;text-transform:none}
.dropdown-panel a:hover{background:#ffffff12;color:var(--gold)}
.menu-toggle{background:none;color:inherit;border:1px solid var(--gold);padding:8px 13px}
.hero{min-height:690px;display:flex;align-items:center;color:var(--ivory);background:linear-gradient(90deg,rgba(12,31,48,.88),rgba(12,31,48,.45) 55%,rgba(12,31,48,.1)),url('../images/home/hero-refinery.webp') center/cover,var(--navy)}
.hero-content{padding-top:135px;padding-bottom:32px}
.hero h1{max-width:900px}
.hero-subtitle{font-size:20px;max-width:850px;margin-top:22px}
.hero-description{max-width:610px;margin-top:22px}
.scroll-link{display:flex;align-items:center;gap:12px;margin-top:46px;font:10px Arial,sans-serif;letter-spacing:.16em;text-transform:uppercase}
.scroll-link span{font:34px Georgia,serif;color:var(--gold)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.section-image{width:100%;aspect-ratio:3/2;height:auto}
.core-services .split{align-items:stretch;gap:0}
.core-services article{padding-right:55px}
.core-services article+article{padding-left:55px;padding-right:0;border-left:1px solid var(--line)}
.core-services h2{font-size:clamp(27px,2.6vw,38px)}
.core-services .button{margin-top:20px}
.section-heading{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-bottom:24px}
.section-heading h2{font-size:clamp(27px,2.7vw,39px);margin-bottom:8px}
.section-heading>.button{flex-shrink:0}
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.product-grid img{width:100%;height:auto;aspect-ratio:1.15;margin-bottom:12px;transition:filter .2s}
.product-grid a:hover img{filter:brightness(1.06)}
.feature{display:grid;grid-template-columns:1fr 1fr;align-items:stretch;border-bottom:1px solid var(--line)}
.feature>img{width:100%;height:100%;min-height:345px}
.feature-copy{padding:45px max(40px,calc((100vw - var(--content))/2));padding-right:45px}
.feature-copy p{max-width:610px}
.feature-copy .button{margin-top:22px}
.feature-dark{background:var(--navy-deep);color:var(--ivory)}
.feature-dark .feature-copy{padding:48px}
.feature-dark .text-link{color:var(--gold)}
.eyebrow{display:flex;align-items:center;gap:20px;font:11px/1.5 Arial,sans-serif;letter-spacing:.13em;text-transform:uppercase;margin-bottom:17px}
.eyebrow::before{content:'';display:block;width:45px;height:2px;background:var(--gold);flex-shrink:0}
.small{font-size:15px}
.industries{padding:32px 0;text-align:center;background:var(--navy);color:var(--ivory)}
.industries .eyebrow{justify-content:center}
.industries h2{display:flex;justify-content:center;gap:0;font-size:36px;margin-bottom:12px}
.industries h2 span{padding:0 34px}
.industries h2 span+span{border-left:1px solid #ece9e080}
.closing{background:var(--navy-deep);color:var(--ivory);text-align:center;padding:40px 0 28px}
.closing .gold-rule{margin-inline:auto}
.closing h2{margin-bottom:10px}
.steps{display:grid;grid-template-columns:repeat(4,1fr);list-style:none;padding:0;margin:30px 0 20px;text-align:left;gap:35px}
.steps li{position:relative}
.steps span{display:block;color:var(--gold);font-size:28px}
.steps li:not(:last-child)::after{content:'';position:absolute;width:35%;right:0;top:28px;height:1px;background:var(--gold)}
.closing .actions{justify-content:center}
.site-footer{background:var(--navy-deep);color:var(--ivory);padding:0 0 28px}
.footer-top{border-top:1px solid #ece9e060;padding-top:25px;display:flex;align-items:center;gap:28px}
.footer-top .wordmark{font-size:21px;padding-right:28px;border-right:1px solid #ece9e080}
.footer-top nav{display:flex;gap:16px;flex-wrap:wrap;font-size:11px}
.footer-top nav a:hover{color:var(--gold)}
.footer-bottom{display:flex;justify-content:space-between;gap:24px;margin-top:28px;font-size:10px}
.footer-bottom p{margin:0}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
/* The mobile toggle is revealed by the mobile stylesheet. */
.menu-toggle{display:none}