:root{--ink:#102536;--blue:#075f91;--blue-dark:#073b5c;--red:#e64732;--red-dark:#c93222;--cream:#f5f1e9;--paper:#fffdf9;--line:#d8e0e3;--muted:#60727c;--yellow:#f4bf39;--shadow:0 18px 50px rgba(7,47,71,.12)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:'Be Vietnam Pro',sans-serif;font-size:15px;line-height:1.65}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer}img{max-width:100%}.container{width:min(1160px,calc(100% - 48px));margin:auto}.topbar{background:var(--blue-dark);color:#d4e7ef;font-size:11px;text-transform:uppercase;letter-spacing:.12em}.topbar-inner{height:34px;display:flex;align-items:center;justify-content:space-between}.site-header{background:var(--paper);border-bottom:1px solid 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span{font-size:10px;color:#6c7b7d;text-transform:uppercase;letter-spacing:.05em}.hero-visual{position:relative;min-height:600px}.sunburst{position:absolute;width:500px;height:500px;border-radius:50%;background:repeating-conic-gradient(from 15deg,rgba(241,183,52,.72) 0deg 7deg,transparent 7deg 16deg);right:-65px;top:28px;opacity:.72}.sunburst:after{content:'';position:absolute;inset:80px;border-radius:50%;background:var(--cream)}.hero-label{position:absolute;top:100px;right:22px;color:var(--red);font:800 40px/ .78 'Barlow Condensed';text-align:right;transform:rotate(-8deg);z-index:1}.hero-label span{font-size:21px;color:var(--blue)}.oil-bottle{position:absolute;z-index:2;filter:drop-shadow(18px 20px 10px rgba(4,34,49,.2));transform:rotate(8deg)}.bottle-back{right:150px;top:140px;transform:rotate(10deg) scale(.84)}.bottle-front{right:38px;top:224px}.cap{height:34px;width:102px;background:#183140;border-radius:8px 8px 2px 2px;margin:auto;box-shadow:inset 0 5px 0 #3d5a65}.bottle-body{width:164px;height:275px;background:linear-gradient(110deg,#164e6b 0 35%,#073e5a 36% 77%,#082e43 78%);border-radius:18px 18px 27px 27px;padding:46px 14px 10px;color:#fff;text-align:center;position:relative;border:3px solid #133b50}.bottle-body:before{content:'';position:absolute;top:-13px;left:18px;right:18px;height:27px;background:#143a4c;border-radius:5px}.bottle-body small{display:block;color:#f0b52d;font:600 25px 'Barlow Condensed';text-transform:uppercase}.bottle-body b{display:block;font:800 34px/.82 'Barlow Condensed';margin:27px 0 20px}.bottle-body i{font:600 10px 'Be Vietnam Pro';font-style:normal;letter-spacing:.03em}.visual-sticker{position:absolute;bottom:94px;right:248px;border:2px solid var(--red);padding:11px 18px;color:var(--red);font-size:10px;font-weight:700;line-height:1.1;transform:rotate(-10deg);z-index:3}.visual-sticker 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p{font-size:13px;color:var(--muted)}.contact-grid,.dealer-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px}.contact-list{border-top:1px solid var(--line)}.contact-item{padding:20px 0;border-bottom:1px solid var(--line)}.contact-item small{color:var(--red);font-size:10px;font-weight:700;letter-spacing:.12em}.contact-item strong{display:block;color:var(--blue);font:28px 'Barlow Condensed';margin-top:5px}.form-panel{background:var(--cream);padding:32px}.form-panel h3{font-size:34px;color:var(--blue)}.form-field{margin-bottom:15px}.form-field label{display:block;font-size:11px;color:var(--blue);font-weight:700;margin-bottom:6px}.form-field input,.form-field textarea,.form-field select{width:100%;border:1px solid #d2dddd;padding:12px;background:#fff;font:inherit;font-size:13px}.form-field textarea{min-height:100px;resize:vertical}.faq-list{margin-top:30px;border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line);padding:18px 0}summary{cursor:pointer;font-weight:700;color:var(--blue);list-style:none}summary::-webkit-details-marker{display:none}details p{color:var(--muted);font-size:13px;max-width:780px;margin:15px 0 0}.notice{padding:14px;background:#e8f4f2;color:var(--blue);font-size:12px;margin-top:15px;display:none}.notice.show{display:block}@media(max-width:850px){.main-nav{display:none}.menu-toggle{display:block;margin-left:auto}.nav-wrap>.button{display:none}.hero-grid{grid-template-columns:1fr}.hero-copy{padding:65px 0 35px}.hero-visual{min-height:430px}.sunburst{right:-100px;top:-25px}.bottle-back{right:170px;top:70px}.bottle-front{right:55px;top:153px}.visual-sticker{right:225px;bottom:60px}.section-pad{padding:70px 0}.split,.partner-grid{display:block}.split>p{margin-top:25px}.benefit-grid{grid-template-columns:1fr}.benefit-card,.benefit-card:not(:first-child){border-right:0;border-bottom:1px solid var(--line);padding:25px 0}.benefit-card:last-child{border-bottom:0}.finder-layout{grid-template-columns:1fr;gap:40px}.catalog-grid,.product-grid,.article-grid,.contact-grid,.dealer-grid{grid-template-columns:1fr}.finder-form{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:span 2}.partner-grid>div+div{margin-top:25px}.page-hero{padding:60px 0 50px}}@media(max-width:520px){.container{width:min(100% - 32px,1160px)}.topbar-inner{font-size:9px}.topbar-inner span:last-child{display:none}.hero-copy{padding-top:55px}h1{font-size:62px}.hero-actions{align-items:flex-start;flex-direction:column;gap:20px}.hero-proof{gap:15px}.hero-proof strong{font-size:23px}.hero-proof span{font-size:8px}.hero-visual{min-height:390px}.bottle-back{right:125px;top:55px;transform:rotate(10deg) scale(.7)}.bottle-front{right:5px;top:133px;transform:rotate(8deg) scale(.85)}.visual-sticker{right:170px;bottom:42px}.hero-label{right:2px;top:60px;font-size:30px}.strip-items span:nth-child(4),.strip-items span:nth-child(5){display:none}.finder-preview{padding:24px 20px}.finder-options{flex-direction:column}.finder-options button{flex:none}.footer-grid{gap:25px}.footer-bottom{display:block}.footer-bottom span+span{display:block;margin-top:8px}.catalog-card{min-height:280px;padding:25px}.mini-bottle{right:50px}.split{margin-bottom:30px}}
.article-hero{padding:70px 0 50px}
.article-hero-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:50px;align-items:center}
.article-hero-meta{color:var(--red);font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;margin-bottom:16px}
.article-hero-art{background:#fff;box-shadow:var(--shadow);padding:28px;display:grid;place-items:center}
.article-hero-art svg{width:100%;height:auto;max-width:220px}
.article-body-section{padding-top:20px}
.article-body{max-width:760px}
.article-body h2{font-size:32px;text-transform:none;margin-top:52px;margin-bottom:16px}
.article-body h2:first-child{margin-top:0}
.article-body p{color:#3c525c;font-size:14.5px;line-height:1.9;margin-bottom:18px}
.article-body ul{margin:0 0 22px;padding-left:20px;color:#3c525c;font-size:14.5px;line-height:1.9}
.article-body li{margin-bottom:8px}
.article-body table{width:100%;border-collapse:collapse;margin:10px 0 30px;font-size:13px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.article-body th{background:var(--cream);color:var(--blue-dark);font-weight:700}
.expert-note{background:var(--blue-dark);color:#d9ebee;padding:28px 32px;margin:50px 0 0;display:grid;grid-template-columns:1fr 2fr;gap:32px;align-items:center}
.expert-note h3{color:#fff;font-size:32px;margin:0}
.expert-note p{margin:0;color:#b7d0d5;font-size:13px;line-height:1.8}
.article-cta{margin-top:36px;display:flex;gap:14px;flex-wrap:wrap}
.article-related{background:var(--cream)}
.footer-company-name{color:#fff;font:700 15px 'Barlow Condensed';letter-spacing:.03em;text-transform:uppercase;margin:14px 0 8px}
.company-legal-name{display:inline-block;color:var(--blue-dark);font:700 14px 'Barlow Condensed';letter-spacing:.04em;text-transform:uppercase;background:#fff;border:1px solid var(--line);padding:8px 16px;margin-bottom:22px}
@media(max-width:850px){.article-hero-grid{grid-template-columns:1fr}.article-hero-art{order:-1;max-width:220px;margin:0 auto}}
@media(max-width:650px){.expert-note{display:block}.expert-note p{margin-top:15px}}
/* Homepage v2: slider, about + stats, product grid, floating contact */
.hp-hero{background:radial-gradient(circle at 85% 20%,rgba(230,71,50,.35),transparent 45%),linear-gradient(120deg,var(--blue-dark) 0%,#0a4f7a 60%,var(--blue) 100%);color:#fff;position:relative;overflow:hidden}
.hp-hero:after{content:'';position:absolute;left:0;right:0;bottom:0;height:6px;background:linear-gradient(90deg,var(--red) 0 40%,var(--yellow) 40% 60%,var(--red) 60%)}
.hp-hero-inner{position:relative;padding:48px 0 64px}
.hp-slides{display:grid}
.hp-slide{grid-area:1/1;display:grid;grid-template-columns:44% 1fr;gap:44px;align-items:center;opacity:0;visibility:hidden;transition:opacity .6s ease,visibility .6s}
.hp-slide.is-active{opacity:1;visibility:visible}
.hp-slide .eyebrow{color:var(--yellow)}
.hp-slide h1,.hp-slide h2{font-family:'Barlow Condensed',sans-serif;font-size:clamp(34px,3.9vw,54px);line-height:1;text-transform:uppercase;color:#fff;margin:14px 0 22px;font-weight:800}
.hp-slide h1 em,.hp-slide h2 em{font-style:normal;color:var(--yellow);display:inline-block;margin-top:6px}
.hp-checks{list-style:none;padding:0;margin:0 0 28px;display:grid;gap:10px}
.hp-checks li{display:flex;align-items:center;gap:12px;font-size:16px;font-weight:600}
.hp-checks li:before{content:'✓';width:24px;height:24px;flex:none;border-radius:50%;background:var(--yellow);color:var(--blue-dark);display:grid;place-items:center;font-size:13px;font-weight:800}
.hp-hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px 22px}
.hp-call{font-weight:700;font-size:15px;color:#fff;border-bottom:2px solid rgba(255,255,255,.35);padding-bottom:2px}
.hp-call:hover{border-color:var(--yellow);color:var(--yellow)}
.hp-slide-media{aspect-ratio:16/10;border-radius:14px;overflow:hidden;box-shadow:0 24px 60px rgba(0,0,0,.35);background:#fff}
.hp-slide-media img{width:100%;height:100%;object-fit:cover;display:block}
.hp-slide-media.is-product img{object-fit:contain;padding:12px}
.hp-arrow{position:absolute;top:calc(50% - 30px);width:42px;height:42px;border-radius:50%;border:1px solid rgba(255,255,255,.4);background:rgba(7,59,92,.55);color:#fff;font-size:26px;line-height:1;display:grid;place-items:center;z-index:2}
.hp-arrow:hover{background:var(--red);border-color:var(--red)}
.hp-prev{left:-58px}.hp-next{right:-58px}
.hp-dots{position:absolute;left:0;right:0;bottom:24px;display:flex;justify-content:center;gap:10px}
.hp-dots button{width:10px;height:10px;padding:0;border:0;border-radius:6px;background:rgba(255,255,255,.4);transition:width .3s}
.hp-dots button.is-active{width:30px;background:var(--yellow)}
.hp-about{background:var(--paper)}
.hp-about-grid{display:grid;grid-template-columns:1fr .9fr 1fr;gap:40px;align-items:center}
.hp-about-copy h2{font-size:clamp(40px,4.4vw,60px);margin:6px 0 18px;line-height:1}
.hp-about-copy p{color:var(--muted);margin:0 0 14px}
.hp-about-copy .button{margin-top:10px}
.hp-about-media{margin:0;border-radius:14px;overflow:hidden;box-shadow:var(--shadow);border:6px solid #fff;outline:2px solid var(--red);outline-offset:8px;aspect-ratio:3/4}
.hp-about-media img{width:100%;height:100%;object-fit:cover;display:block}
.hp-stats-kicker{margin:0;font-weight:700;color:var(--blue-dark)}
.hp-stats h3{font-family:'Barlow Condensed',sans-serif;font-size:30px;line-height:1.1;margin:4px 0 22px;color:var(--blue-dark);text-transform:uppercase}
.hp-stats h3 em{font-style:normal;color:var(--red)}
.hp-stat{margin-bottom:18px}
.hp-stat div{display:flex;justify-content:space-between;gap:12px;font-size:13px;margin-bottom:7px}
.hp-stat span{color:var(--ink)}
.hp-stat strong{color:var(--blue);white-space:nowrap}
.hp-stat i{display:block;height:6px;border-radius:4px;background:var(--line);position:relative;overflow:hidden}
.hp-stat i:after{content:'';position:absolute;inset:0 auto 0 0;width:var(--w);background:linear-gradient(90deg,var(--red),var(--yellow));border-radius:4px}
.hp-products{background:var(--cream)}
.hp-title{text-align:center;margin-bottom:44px}
.hp-title h2{font-size:clamp(32px,3.6vw,46px);margin:0 0 6px}
.hp-title p{margin:0;color:var(--muted)}
.hp-title span{display:block;width:70px;height:4px;background:var(--red);margin:16px auto 0;border-radius:2px}
.hp-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.hp-card{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}
.hp-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.hp-card-img{aspect-ratio:1/1;background:#fff;position:relative;overflow:hidden}
.hp-card-img img{position:absolute;inset:0;width:100%;height:100%;max-width:none;object-fit:contain;padding:10px;transition:transform .3s}
.hp-card-img.is-photo img{object-fit:cover;padding:0}
.hp-card:hover .hp-card-img img{transform:scale(1.04)}
.hp-card-body{padding:18px 20px 22px;border-top:1px solid var(--line);text-align:center;display:flex;flex-direction:column;gap:6px;flex:1}
.hp-card-body small{color:var(--blue);font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase}
.hp-card-body h3{margin:0 0 10px;font-size:20px;line-height:1.35;color:var(--ink)}
.hp-quote{margin-top:auto;align-self:center;background:var(--yellow);color:var(--blue-dark);font-weight:700;font-size:13px;padding:9px 18px;border-radius:6px}
.hp-quote:hover{background:var(--red);color:#fff}
.hp-more{text-align:center;margin-top:40px}
.float-contact{position:fixed;right:22px;bottom:92px;z-index:20;display:flex;flex-direction:column;gap:10px}
.float-contact a{width:50px;height:50px;border-radius:50%;display:grid;place-items:center;color:#fff;font-size:20px;box-shadow:0 8px 20px rgba(0,0,0,.2);position:relative}
.float-contact .fc-phone{background:var(--red);animation:fc-ring 2.4s infinite}
.float-contact .fc-map{background:var(--blue)}
.float-contact a span{position:absolute;right:60px;background:var(--ink);color:#fff;font-size:12px;white-space:nowrap;padding:5px 10px;border-radius:4px;opacity:0;pointer-events:none;transition:opacity .2s}
.float-contact a:hover span{opacity:1}
@keyframes fc-ring{0%,100%{box-shadow:0 0 0 0 rgba(230,71,50,.5)}50%{box-shadow:0 0 0 12px rgba(230,71,50,0)}}
@media(prefers-reduced-motion:reduce){.hp-slide{transition:none}.float-contact .fc-phone{animation:none}}
@media(max-width:1290px){.hp-prev{left:-14px}.hp-next{right:-14px}}
@media(max-width:980px){.hp-about-grid{grid-template-columns:1fr 1fr}.hp-about-copy{grid-column:1/-1}}
@media(max-width:850px){.hp-hero-inner{padding:24px 0 56px}.hp-slide{grid-template-columns:1fr;gap:22px}.hp-slide-media{order:-1}.hp-arrow{top:calc((100vw - 48px)*.3 - 4px)}.hp-prev{left:-10px}.hp-next{right:-10px}.hp-grid{grid-template-columns:repeat(2,1fr);gap:14px}}
@media(max-width:600px){.hp-about-grid{grid-template-columns:1fr}.hp-about-media{max-width:340px;margin:0 auto}.hp-card-body{padding:14px 10px 16px}.hp-card-body h3{font-size:16px}.hp-card-body small{font-size:10px}.hp-quote{font-size:12px;padding:8px 12px}.hp-checks li{font-size:15px}.float-contact{right:14px;bottom:82px}.float-contact a{width:46px;height:46px}}
/* Vehicle oil finder (san-pham.html) */
.vf-lead{color:var(--muted);max-width:620px;margin:-6px 0 22px}
.vf-form{display:grid;gap:14px}
.vf-search{position:relative;max-width:620px}
.vf-search label{display:block;font-size:12px;font-weight:700;color:var(--blue-dark);margin-bottom:6px}
.vf-search input{width:100%;font:inherit;font-size:16px;padding:14px 16px;border:2px solid var(--line);border-radius:8px;background:#fff;color:var(--ink)}
.vf-search input:focus{outline:none;border-color:var(--blue)}
.vf-list{position:absolute;left:0;right:0;top:100%;margin:4px 0 0;padding:6px 0;list-style:none;background:#fff;border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow);max-height:330px;overflow:auto;z-index:15}
.vf-list li{display:flex;justify-content:space-between;gap:12px;padding:10px 16px;cursor:pointer;font-size:14px}
.vf-list li b{color:var(--red);white-space:nowrap}
.vf-list li:hover,.vf-list li.active{background:#eef5f8}
.vf-list .vf-empty{color:var(--muted);cursor:default}
.vf-chips{display:flex;flex-wrap:wrap;gap:8px}
.vf-chip{border:1px solid var(--line);background:#fff;color:var(--ink);padding:7px 14px;border-radius:20px;font-size:13px;font-weight:600}
.vf-chip.active,.vf-chip:hover{background:var(--blue);border-color:var(--blue);color:#fff}
.vf-result{margin-top:22px}
.vf-card{background:#fff;border:1px solid var(--line);border-left:5px solid var(--red);border-radius:10px;padding:22px 24px}
.vf-card-head{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;margin-bottom:16px}
.vf-card-head h3{margin:0;font-size:28px;color:var(--blue-dark);text-transform:uppercase}
.vf-badge{background:var(--yellow);color:var(--blue-dark);font-size:11px;font-weight:700;padding:4px 10px;border-radius:4px;text-transform:uppercase}
.vf-source{font-size:12px;font-weight:600;color:#1e8a4c}
.vf-source.muted,.vf-card .muted{color:var(--muted)}
.vf-figures{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-bottom:18px}
.vf-figures div{background:var(--cream);border-radius:8px;padding:12px 14px}
.vf-figures small{display:block;font-size:12px;color:var(--muted)}
.vf-figures strong{font-family:'Barlow Condensed',sans-serif;font-size:30px;color:var(--red);line-height:1.1}
.vf-figures div:first-child{background:var(--blue-dark)}
.vf-figures div:first-child small{color:#cfe2ec}
.vf-figures div:first-child strong{color:var(--yellow)}
.vf-reco p{margin:0 0 8px;font-size:14px}
.vf-reco p:first-child small{display:block;font-size:12px;color:var(--muted)}
.vf-reco p:first-child strong{font-size:18px;color:var(--blue-dark)}
.vf-reco .button{margin-top:8px}
.vf-table-wrap{margin-top:26px}
.vf-table-wrap summary{cursor:pointer;font-weight:700;color:var(--blue);padding:10px 0}
.vf-table-scroll{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:8px}
.vf-table{width:100%;border-collapse:collapse;font-size:13px;min-width:680px}
.vf-table th,.vf-table td{padding:9px 12px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
.vf-table th{background:var(--blue-dark);color:#fff;font-weight:600;position:sticky;top:0}
.vf-table tbody tr:nth-child(even){background:#fafcfc}
.vf-table td strong{color:var(--red)}
.vf-row-pick{border:0;background:none;padding:0;color:var(--blue);font:inherit;font-weight:600;text-align:left}
.vf-row-pick:hover{text-decoration:underline}
.vf-ok{color:#1e8a4c;font-weight:700}
.vf-note{font-size:12px;color:var(--muted);margin:10px 0 0}
@media(max-width:600px){.vf-card{padding:18px 16px}.vf-card-head h3{font-size:24px}.vf-figures{grid-template-columns:1fr 1fr}.vf-figures strong{font-size:26px}}
.finder-preview .finder-options{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.finder-sample{display:flex;justify-content:space-between;align-items:center;gap:8px;border:1px solid var(--line);padding:11px 14px;font-size:13px;font-weight:600;color:var(--ink)}
.finder-sample b{color:var(--red);font-family:'Barlow Condensed',sans-serif;font-size:20px}
.finder-sample:hover{border-color:var(--red)}
@media(max-width:600px){.finder-preview .finder-options{grid-template-columns:1fr}}
.product-visual{position:relative;overflow:hidden;background:#fff}
.product-visual .real-product-image{position:absolute!important;inset:0;height:100%!important;padding:10px}