:root{--red:#c82424;--dark:#1b1b1b;--muted:#686868;--cream:#fff7eb;--gold:#e8b741}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,Helvetica,sans-serif;color:#222;background:#fff;line-height:1.6}img{display:block;max-width:100%}a{text-decoration:none;color:inherit}.container{width:min(1180px,calc(100% - 32px));margin:0 auto}.top{background:#121212;color:#fff;font-size:14px}.top-row{display:flex;justify-content:space-between;gap:18px;align-items:center;padding:8px 0}.top p{margin:0}.socials{display:flex;gap:10px}.socials a{color:#fff;border-left:1px solid rgba(255,255,255,.25);padding-left:10px}.brand-bar{background:#fff}.brand-inner{display:flex;align-items:center;gap:18px;justify-content:space-between;padding:12px 0}.logo img{width:130px;height:94px;object-fit:contain}.brand-text{text-align:center;flex:1}.brand-text p{margin:0;text-transform:uppercase;font-weight:800;color:#444}.brand-text h1{margin:2px 0;color:var(--red);font-size:40px;letter-spacing:1px}.brand-text span{font-weight:800;color:#111}.hotline{text-align:right}.hotline small{display:block;color:var(--muted)}.hotline a{font-size:28px;color:var(--red);font-weight:900}.menu-btn{display:none}.main-nav{background:var(--red);color:#fff;position:sticky;top:0;z-index:20;box-shadow:0 4px 18px rgba(0,0,0,.18)}.nav-inner{display:flex;justify-content:center}.nav-inner a{padding:15px 22px;text-transform:uppercase;font-weight:800}.nav-inner a:hover{background:#991919}.hero{position:relative;min-height:620px;overflow:hidden}.hero>img{width:100%;height:620px;object-fit:cover}.hero:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.45),rgba(0,0,0,.05))}.hero-caption{position:absolute;left:calc((100vw - min(1180px,calc(100vw - 32px)))/2);bottom:70px;z-index:2;max-width:610px;color:#fff}.hero-caption p{font-size:24px;font-weight:800;text-shadow:0 3px 10px rgba(0,0,0,.5)}.hero-caption a,.video-grid a{display:inline-flex;background:var(--red);color:#fff;padding:12px 20px;border-radius:4px;font-weight:900}.section{padding:70px 0}.intro{background:#fff}.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:42px;align-items:center}.eyebrow,.title p{margin:0 0 10px;color:var(--red);text-transform:uppercase;font-weight:900}.intro h2,.title h2,.video-grid h2,.quote h2{font-size:34px;line-height:1.2;margin:0 0 18px}.intro-copy p{color:var(--muted)}.intro-copy ul{padding:0;list-style:none}.intro-copy li{margin:10px 0;padding-left:28px;position:relative;font-weight:700}.intro-copy li:before{content:"";position:absolute;left:0;top:9px;width:14px;height:14px;border-radius:50%;background:var(--red)}.intro-images{display:grid;grid-template-columns:1fr 1fr;gap:16px}.intro-images img{height:430px;width:100%;object-fit:cover;border-radius:6px;box-shadow:0 14px 35px rgba(0,0,0,.14)}.intro-images img:nth-child(2){margin-top:44px}.services{background:var(--cream)}.title{text-align:center;max-width:760px;margin:0 auto 28px}.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.service-grid article{background:#fff;border-radius:6px;overflow:hidden;box-shadow:0 10px 28px rgba(0,0,0,.1)}.service-grid img{height:210px;width:100%;object-fit:cover}.service-grid h3{color:var(--red);margin:18px 18px 8px;font-size:22px}.service-grid p{color:var(--muted);margin:0 18px 22px}.video-band{background:#1d1d1d;color:#fff}.video-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:34px;align-items:center}.video-grid p{color:#ddd}.video-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.video-cards img{height:390px;width:100%;object-fit:cover;border-radius:6px}.news-card{display:grid;grid-template-columns:420px 1fr;gap:26px;align-items:center;background:var(--cream);padding:18px;border-radius:6px}.news-card img{height:280px;width:100%;object-fit:cover;border-radius:4px}.news-card time{color:var(--red);font-weight:900}.news-card h3{font-size:28px;margin:8px 0}.news-card p{color:var(--muted)}.quote{background:linear-gradient(rgba(0,0,0,.62),rgba(0,0,0,.62)),url("../img/hero-oil.png") center/cover no-repeat;color:#fff;padding:70px 0}.quote-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center}.quote p{color:var(--gold);font-weight:900;text-transform:uppercase}.quote ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:12px}.quote li{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);padding:14px;border-radius:4px;font-weight:800}.footer{background:#161616;color:#ddd;padding:48px 0}.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr;gap:30px}.footer h2,.footer h3{color:#fff;margin:0 0 14px}.footer a{display:block;color:#ddd;margin:8px 0}.floating-contact{position:fixed;right:18px;bottom:18px;display:grid;gap:8px;z-index:50}.floating-contact a{background:var(--red);color:#fff;padding:10px 15px;border-radius:999px;font-weight:900;box-shadow:0 8px 22px rgba(0,0,0,.25)}
@media(max-width:980px){.brand-text h1{font-size:30px}.service-grid{grid-template-columns:repeat(2,1fr)}.intro-grid,.video-grid,.quote-grid,.footer-grid{grid-template-columns:1fr}.hero-caption{left:24px;right:24px}.news-card{grid-template-columns:1fr}.video-cards img{height:300px}}
@media(max-width:720px){.top-row{display:block}.hotline{display:none}.menu-btn{display:block;background:var(--red);color:#fff;border:0;border-radius:4px;font-size:24px;padding:8px 12px}.brand-text{text-align:left}.brand-text h1{font-size:24px}.main-nav{display:none}.main-nav.open{display:block}.nav-inner{display:grid}.nav-inner a{text-align:center}.hero,.hero>img{min-height:520px;height:520px}.hero-caption{bottom:44px}.hero-caption p{font-size:18px}.section{padding:48px 0}.intro-images,.service-grid,.video-cards,.quote ul{grid-template-columns:1fr}.intro-images img,.intro-images img:nth-child(2){height:280px;margin:0}.floating-contact{left:16px;right:16px;grid-template-columns:1fr 1fr}.floating-contact a{text-align:center}}

@media(max-width:720px){
  .brand-inner{display:grid;grid-template-columns:auto auto;align-items:center;justify-content:space-between;gap:12px;padding:12px 0 18px}
  .logo{grid-column:1;grid-row:1}
  .logo img{width:116px;height:86px}
  .menu-btn{grid-column:2;grid-row:1;justify-self:end;width:56px;height:56px}
  .brand-text{grid-column:1/-1;grid-row:2;text-align:center;padding-top:8px}
  .brand-text p{font-size:22px;line-height:1.45;max-width:360px;margin:0 auto;font-weight:900}
  .brand-text h1{font-size:34px;line-height:1.15;margin:10px 0;color:var(--red)}
  .brand-text span{display:block;font-size:20px;line-height:1.55;max-width:360px;margin:0 auto}
}

.page-hero,.article-hero{background:linear-gradient(rgba(0,0,0,.58),rgba(0,0,0,.58)),url("../img/hero-oil.png") center/cover no-repeat;color:#fff;padding:82px 0}.page-hero h1,.article-hero h1{font-size:42px;line-height:1.16;margin:0 0 12px;max-width:900px}.page-hero p{max-width:760px;font-size:18px;margin:0;color:#f2f2f2}.article-layout{display:grid;grid-template-columns:1fr 330px;gap:30px;align-items:start}.article-list{display:grid;gap:18px}.article-card{display:grid;grid-template-columns:300px 1fr;gap:22px;background:#fff;border:1px solid #eee;border-radius:6px;padding:14px;box-shadow:0 10px 28px rgba(0,0,0,.08)}.article-card img{width:100%;height:220px;object-fit:cover;border-radius:4px}.article-card time,.meta{color:var(--red);font-weight:900;font-size:14px}.article-card h2{font-size:24px;line-height:1.25;margin:8px 0}.article-card p,.side-box p,.detail-content p,.detail-content li{color:var(--muted)}.read-more{color:var(--red);font-weight:900}.article-sidebar{display:grid;gap:16px;position:sticky;top:76px}.side-box{background:var(--cream);border-radius:6px;padding:18px;box-shadow:0 10px 28px rgba(0,0,0,.08)}.side-box h3{margin:0 0 12px}.side-box a{display:block;color:var(--red);font-weight:900;padding:8px 0;border-bottom:1px solid rgba(0,0,0,.08)}.side-box a:last-child{border-bottom:0}.contact-box a,.detail-cta a{display:inline-flex;background:var(--red);color:#fff;padding:10px 16px;border-radius:4px;border-bottom:0}.breadcrumb{display:flex;gap:8px;align-items:center;margin-bottom:12px;font-weight:900}.breadcrumb a{color:#fff}.detail-content{padding:54px 0 70px}.detail-cover{width:100%;height:420px;object-fit:cover;border-radius:6px;margin-bottom:24px}.detail-content .lead{font-size:20px;color:#222;font-weight:800}.detail-content h2{font-size:30px;margin:30px 0 12px}.detail-content blockquote{margin:30px 0;padding:22px 26px;border-left:6px solid var(--red);background:var(--cream);font-size:20px;font-weight:800}.detail-cta{background:#1d1d1d;color:#fff;border-radius:6px;padding:26px;margin-top:34px}.detail-cta p{color:#ddd}.detail-cta h2{margin-top:0}
@media(max-width:980px){.article-layout{grid-template-columns:1fr}.article-sidebar{position:static}.article-card{grid-template-columns:230px 1fr}.page-hero h1,.article-hero h1{font-size:34px}}
@media(max-width:720px){.page-hero,.article-hero{padding:54px 0}.article-card{grid-template-columns:1fr}.article-card img{height:230px}.detail-cover{height:300px}.detail-content{padding:42px 0}.detail-content h2{font-size:25px}}
.header-contact{background:#fff;border-top:1px solid var(--line);box-shadow:0 10px 28px rgba(15,23,42,.05)}.header-contact-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;align-items:center;padding:14px 0}.contact-card{position:relative;min-width:0;display:flex;align-items:center;gap:12px;background:#fff;border:1px solid #111827;border-radius:14px;padding:10px 12px;transition:transform .18s ease,box-shadow .18s ease,background .18s ease}.contact-card:hover{transform:translateY(-2px);background:#fafafa;box-shadow:0 12px 28px rgba(15,23,42,.12)}.hotline-card,.social-card{border-color:#111827;border-radius:14px}.hotline-card:before,.hotline-card:after{display:none}.contact-icon{position:relative;flex:0 0 52px;width:52px;height:52px;display:grid;place-items:center;border-radius:50%;font-weight:900;background:#111827;color:#fff;border:3px solid #111827;box-shadow:inset 0 0 0 2px #fff}.contact-icon:after{content:"";position:absolute;right:0;bottom:2px;width:12px;height:12px;background:#22c55e;border:2px solid #fff;border-radius:50%;box-shadow:0 0 0 0 rgba(34,197,94,.55);animation:contact-online 1.5s ease-out infinite}.contact-icon svg{width:42px;height:42px;display:block}.headset-icon svg,.phone-icon svg{fill:none;stroke:#fff;stroke-width:4;stroke-linecap:round;stroke-linejoin:round}.headset-icon svg rect,.phone-icon svg circle{fill:#fff;stroke:#fff}.phone-icon svg circle{fill:none}.phone-icon svg path{fill:none}.zalo-icon,.facebook-icon{background:#111827;color:#fff;font-family:Arial,Helvetica,sans-serif}.zalo-icon{font-size:32px}.facebook-icon{font-size:38px;line-height:1}.contact-text{min-width:0;display:grid;line-height:1.1}.contact-text small{font-size:18px;font-weight:800;white-space:nowrap}.contact-text strong{margin-top:5px;color:#111827;font-size:25px;font-weight:900;line-height:1;white-space:nowrap}.social-card .contact-text small{font-size:14px}.social-card .contact-text strong{font-size:21px;color:#111827}.zalo-card:hover,.facebook-card:hover{border-color:#111827}@keyframes contact-online{0%{box-shadow:0 0 0 0 rgba(34,197,94,.55)}70%{box-shadow:0 0 0 9px rgba(34,197,94,0)}100%{box-shadow:0 0 0 0 rgba(34,197,94,0)}}
@media(max-width:1120px){.header-contact-inner{grid-template-columns:1fr 1fr}.contact-text strong{font-size:25px}.social-card .contact-text strong{font-size:21px}}
@media(max-width:720px){.header-contact-inner{grid-template-columns:1fr;gap:10px;padding:12px 0}.contact-card{padding:9px 10px}.contact-icon{width:46px;height:46px;flex-basis:46px}.contact-icon svg{width:36px;height:36px}.contact-text small{font-size:15px}.contact-text strong{font-size:26px}.social-card .contact-text strong{font-size:20px}}