/*
Theme Name: Refining Lab
Theme URI: https://example.com/
Author: Refining Lab
Description: Modern technical magazine WordPress theme for petroleum refining, laboratory analysis, industrial water, ASTM standards and refinery tools.
Version: 1.0.0
License: GPL-2.0-or-later
Text Domain: refining-lab
*/
:root{
 --rl-navy:#0b1f33; --rl-blue:#1261a0; --rl-cyan:#19a7ce; --rl-orange:#ef8b2c;
 --rl-bg:#f4f7fa; --rl-card:#fff; --rl-text:#16212b; --rl-muted:#617180;
 --rl-border:#dfe7ee; --rl-radius:18px; --rl-shadow:0 14px 40px rgba(11,31,51,.08);
}
*{box-sizing:border-box} html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--rl-text);background:var(--rl-bg);line-height:1.65}
a{color:inherit;text-decoration:none} img{max-width:100%;height:auto}
.rl-container{width:min(1160px,92%);margin:auto}
.rl-top{background:#071624;color:#b9c8d4;font-size:13px;padding:7px 0}
.rl-top .rl-container{display:flex;justify-content:space-between;gap:15px}
.rl-header{background:#fff;border-bottom:1px solid var(--rl-border);position:sticky;top:0;z-index:50;box-shadow:0 4px 20px rgba(0,0,0,.04)}
.rl-header-inner{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:25px}
.rl-brand{display:flex;align-items:center;gap:12px;font-weight:850;letter-spacing:-.5px}
.rl-logo{width:48px;height:48px;border-radius:14px;background:linear-gradient(145deg,var(--rl-blue),var(--rl-cyan));display:grid;place-items:center;color:#fff;box-shadow:0 7px 20px rgba(18,97,160,.25)}
.rl-logo svg{width:30px;height:30px}
.rl-brand-name{font-size:21px;color:var(--rl-navy)} .rl-brand-name span{color:var(--rl-cyan)}
.rl-nav ul{display:flex;list-style:none;margin:0;padding:0;gap:5px;align-items:center;flex-wrap:wrap}
.rl-nav li{position:relative}.rl-nav a{display:block;padding:9px 10px;border-radius:10px;font-size:14px;font-weight:650;color:#354554}
.rl-nav a:hover{background:#eef7fb;color:var(--rl-blue)}
.rl-menu-toggle{display:none;border:0;background:var(--rl-navy);color:#fff;border-radius:10px;padding:10px 13px;font-size:18px}
.rl-hero{background:radial-gradient(circle at 80% 15%,rgba(25,167,206,.35),transparent 32%),linear-gradient(135deg,#071b2d 0%,#0b2f4b 55%,#1261a0 100%);color:#fff;padding:88px 0 78px;overflow:hidden;position:relative}
.rl-hero:after{content:"";position:absolute;width:420px;height:420px;border:1px solid rgba(255,255,255,.1);border-radius:50%;right:-110px;bottom:-220px}
.rl-hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:55px;align-items:center}
.rl-eyebrow{display:inline-flex;gap:8px;align-items:center;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.14);padding:7px 12px;border-radius:999px;font-size:12px;font-weight:750;text-transform:uppercase;letter-spacing:1px}
.rl-hero h1{font-size:clamp(38px,5vw,66px);line-height:1.03;letter-spacing:-2.5px;margin:18px 0}
.rl-hero h1 span{color:#61dcf4}.rl-hero p{font-size:18px;color:#d2e2ed;max-width:650px}
.rl-actions{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}
.rl-btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 18px;border-radius:12px;font-weight:800;border:1px solid transparent}
.rl-btn-primary{background:#fff;color:var(--rl-navy)}.rl-btn-primary:hover{background:#eafaff}
.rl-btn-ghost{border-color:rgba(255,255,255,.3);color:#fff}.rl-btn-ghost:hover{background:rgba(255,255,255,.08)}
.rl-hero-panel{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:24px;padding:24px;backdrop-filter:blur(8px)}
.rl-panel-title{font-weight:800;font-size:17px;margin-bottom:17px}
.rl-stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.rl-stat{padding:16px;background:rgba(255,255,255,.08);border-radius:14px}.rl-stat b{display:block;font-size:24px}.rl-stat small{color:#bdd0dd}
.rl-section{padding:70px 0}.rl-section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:28px}
.rl-section-head h2{margin:0;font-size:32px;line-height:1.15;letter-spacing:-1px}.rl-section-head p{margin:8px 0 0;color:var(--rl-muted)}
.rl-kicker{color:var(--rl-blue);font-weight:850;font-size:12px;text-transform:uppercase;letter-spacing:1.3px}
.rl-category-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.rl-cat{background:#fff;border:1px solid var(--rl-border);border-radius:var(--rl-radius);padding:23px;transition:.2s;box-shadow:0 5px 18px rgba(11,31,51,.035)}
.rl-cat:hover{transform:translateY(-4px);box-shadow:var(--rl-shadow);border-color:#b9d8e6}
.rl-cat-icon{width:48px;height:48px;border-radius:13px;background:#edf8fc;display:grid;place-items:center;font-size:25px;margin-bottom:16px}
.rl-cat h3{margin:0 0 6px;font-size:17px}.rl-cat p{margin:0;color:var(--rl-muted);font-size:13px}
.rl-post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.rl-post{background:#fff;border:1px solid var(--rl-border);border-radius:var(--rl-radius);overflow:hidden;box-shadow:0 6px 20px rgba(11,31,51,.04)}
.rl-post-media{height:185px;background:linear-gradient(135deg,#0b2f4b,#19a7ce);display:grid;place-items:center;color:#fff;position:relative;overflow:hidden}
.rl-post-media:before{content:"";position:absolute;width:190px;height:190px;border:1px solid rgba(255,255,255,.2);border-radius:50%}
.rl-post-media span{font-size:50px;z-index:1}
.rl-post-body{padding:20px}.rl-tag{color:var(--rl-blue);font-size:11px;font-weight:850;text-transform:uppercase;letter-spacing:1px}
.rl-post h3{font-size:19px;line-height:1.25;margin:8px 0}.rl-post p{color:var(--rl-muted);font-size:14px;margin:0 0 15px}.rl-read{font-weight:800;color:var(--rl-blue);font-size:13px}
.rl-tool-band{background:#071b2d;color:#fff;border-radius:26px;padding:38px}
.rl-tool-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:13px;margin-top:25px}
.rl-tool{padding:18px;border-radius:15px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12)}
.rl-tool strong{display:block;margin-bottom:5px}.rl-tool small{color:#bcd0dd}
.rl-news{display:grid;grid-template-columns:1fr .8fr;gap:35px;align-items:center}
.rl-news-box{background:#fff;border:1px solid var(--rl-border);border-radius:22px;padding:30px}
.rl-news-form{display:flex;gap:10px;margin-top:18px}.rl-news-form input{flex:1;border:1px solid var(--rl-border);border-radius:11px;padding:12px}
.rl-footer{background:#071624;color:#bdcbd5;padding:55px 0 22px}.rl-footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:35px}.rl-footer h3{color:#fff;margin-top:0}.rl-footer ul{list-style:none;margin:0;padding:0}.rl-footer li{margin:7px 0}.rl-footer a:hover{color:#fff}.rl-footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:35px;padding-top:18px;font-size:12px;display:flex;justify-content:space-between}
.rl-page{padding:60px 0}.rl-page h1{font-size:44px;line-height:1.1}.rl-content{background:#fff;border:1px solid var(--rl-border);border-radius:20px;padding:35px}
.rl-breadcrumb{font-size:13px;color:var(--rl-muted);margin-bottom:18px}
.rl-pagination{margin-top:35px}
.rl-pagination a,.rl-pagination span{display:inline-block;padding:8px 12px;background:#fff;border:1px solid var(--rl-border);border-radius:8px;margin-right:5px}
@media(max-width:1000px){.rl-nav{display:none}.rl-menu-toggle{display:block}.rl-nav.open{display:block;position:absolute;left:4%;right:4%;top:72px;background:#fff;padding:12px;border:1px solid var(--rl-border);border-radius:14px;box-shadow:var(--rl-shadow)}.rl-nav.open ul{display:block}.rl-nav.open a{padding:11px}.rl-hero-grid,.rl-news{grid-template-columns:1fr}.rl-category-grid{grid-template-columns:repeat(2,1fr)}.rl-tool-grid{grid-template-columns:repeat(2,1fr)}.rl-footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:650px){.rl-top{display:none}.rl-header-inner{min-height:68px}.rl-hero{padding:58px 0}.rl-section{padding:48px 0}.rl-category-grid,.rl-post-grid,.rl-tool-grid,.rl-footer-grid{grid-template-columns:1fr}.rl-section-head{display:block}.rl-hero h1{font-size:43px}.rl-footer-bottom{display:block}.rl-news-form{display:block}.rl-news-form input,.rl-news-form .rl-btn{width:100%;margin-bottom:8px}}