/* product-detail */
/* PRODUCT HERO */
.product-hero{display:grid;grid-template-columns:360px 1fr;gap:0;padding:110px 60px 60px;align-items:start}
.product-img-col{position:sticky;top:110px;display:flex;flex-direction:column;gap:34px}
.product-img-wrap{background:#fff;display:flex;align-items:center;justify-content:center;padding:40px;min-height:320px;overflow:hidden;isolation:isolate;box-shadow:1px 0 0 0 var(--border)}
.product-img-wrap img{width:100%;max-width:240px;height:auto;object-fit:contain}
.product-img-placeholder{font-size:80px;opacity:0.5}
.product-datasheet-list{display:flex;flex-wrap:nowrap;gap:10px;width:100%}
.product-datasheet{
    flex:1 1 0;
    min-width:0;
    max-width:none;
    font-family:var(--font-display);
    font-size:var(--typ-small);
    font-weight:700;
    letter-spacing:0.22em;
    text-transform:uppercase;
    background:#232323;
    border:1px solid #3E3E3E;color:rgba(255,255,255,1);padding:14px 16px;display:flex;flex-direction:column;gap:4px;text-decoration:none;transition:border-color 0.2s,color 0.2s;text-align:center;align-items:center}
.product-datasheet:hover{border-color:rgba(245,195,0,0.3);color:var(--yellow)}
.product-datasheet span{font-size:var(--typ-small);font-weight:400;color:#FFDB00;text-transform:uppercase;}
.product-info-col{padding-left:60px}
.product-eyebrow{font-family:var(--font-display);font-size:var(--typ-small);font-weight:700;letter-spacing:0.3em;text-transform:uppercase;color:var(--yellow);display:flex;align-items:center;gap:10px;margin-bottom:14px}
.product-eyebrow::before{content:'';width:36px;height:1px;background:var(--yellow)}
.product-name{font-family:var(--font-display);font-size:var(--typ-subheading);font-weight:900;text-transform:uppercase;line-height:0.95;letter-spacing:-0.01em;margin-bottom:20px}
.product-viscosity{font-family:var(--font-display);font-size:var(--typ-title);font-weight:700;color:var(--yellow);margin-bottom:24px}
.specs-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:5px;margin-bottom:28px}
.spec-box{background:#fff;border:1px solid var(--border);padding:14px 16px}
.spec-key{font-family:var(--font-display);font-size:var(--typ-small);font-weight:700;letter-spacing:0.28em;text-transform:uppercase;color:#5A5A5A;margin-bottom:6px}
.spec-val{font-family:var(--font-display);font-size:var(--typ-title);font-weight:800;color:var(--black);line-height:1}
.tabs{display:flex;border-bottom:1px solid var(--border);margin-bottom:28px}
.tab{font-family:var(--font-display);font-size:var(--typ-small);font-weight:700;letter-spacing:0.2em;text-transform:uppercase;color:var(--text);padding:14px 20px;border:none;background:transparent;cursor:pointer;position:relative;border-bottom:2px solid transparent;transition:color 0.2s}
.tab::after{content:'';position:absolute;bottom:-1px;left:0;right:0;height:2px;background:var(--yellow);transform:scaleX(0);transition:transform 0.25s}
.tab.active{color:var(--yellow)}
.tab.active::after{transform:scaleX(1)}
.tab:hover{color:var(--white)}
.tab-content{display:none}
.tab-content.active{display:block}
.tab-text{font-size:var(--typ-body);font-weight:300;line-height:1.85;color:var(--text)}
.tab-text,
.tab-text p,
.tab-text span,
.tab-text li{font-family:var(--font-body)!important;font-size:var(--typ-body)!important;color:var(--text)!important}
.tab-text p{margin-bottom:16px}
.benefits-list{display:flex;flex-direction:column;gap:0}
.benefit-row{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid rgba(255,255,255,0.05)}
.benefit-row:last-child{border-bottom:none}
.benefit-num{font-family:var(--font-display);font-size:var(--typ-feature);font-weight:700;color:var(--yellow);min-width:24px}
.benefit-title{font-family:var(--font-display);font-size:var(--typ-title);font-weight:800;text-transform:uppercase;color:var(--white);margin-bottom:4px}
.benefit-text{font-size:var(--typ-body);font-weight:300;color:var(--text);line-height:1.6}
.specs-table{width:100%;border-collapse:collapse}
.specs-table tr{border-bottom:1px solid rgba(255,255,255,0.05)}
.specs-table tr:last-child{border-bottom:none}
.specs-table td{padding:13px 0;font-size:var(--typ-body)}
.specs-table td:first-child{font-family:var(--font-display);font-size:var(--typ-small);font-weight:700;letter-spacing:0.2em;text-transform:uppercase;color:var(--text);width:40%}
.app-text{font-size:var(--typ-body);font-weight:300;line-height:1.85;color:var(--text)}
.app-text,
.app-text p,
.app-text span,
.app-text li{font-family:var(--font-body)!important;font-size:var(--typ-body)!important;color:var(--text)!important}
.app-text p{margin-bottom:16px}
.product-cta{display:flex;gap:12px;margin-top:32px;padding-top:24px;border-top:1px solid var(--border);flex-wrap:wrap}
.btn-primary{font-family:var(--font-display);font-size:var(--typ-small);font-weight:800;letter-spacing:0.2em;text-transform:uppercase;background:var(--yellow);color:var(--black);padding:15px 32px;text-decoration:none;border:none;cursor:pointer;clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,8px 100%,0 calc(100% - 8px));transition:transform 0.15s}
.btn-primary:hover{transform:translateY(-2px)}
.btn-outline{font-family:var(--font-display);font-size:var(--typ-small);font-weight:700;letter-spacing:0.2em;text-transform:uppercase;background:transparent;color:rgba(255,255,255,0.5);padding:15px 24px;border:1.5px solid rgba(255,255,255,0.15);cursor:pointer;transition:color 0.2s,border-color 0.2s}
.btn-outline:hover{color:var(--white);border-color:rgba(255,255,255,0.3)}

/* RELATED */
.related-section{padding:60px 60px;border-top:1px solid var(--border)}
.related-header{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:32px}
.related-eyebrow{font-family:var(--font-display);font-size:var(--typ-small);font-weight:700;letter-spacing:0.35em;text-transform:uppercase;color:var(--yellow);display:flex;align-items:center;gap:10px;margin-bottom:10px}
.related-eyebrow::before{content:'';width:28px;height:1px;background:var(--yellow)}
.related-title{font-family:var(--font-display);font-size:var(--typ-subheading);font-weight:900;text-transform:uppercase;line-height:0.95}
.related-title em{font-style:italic;color:var(--yellow)}
.view-all{font-family:var(--font-display);font-size:var(--typ-small);font-weight:700;letter-spacing:0.2em;text-transform:uppercase;color:var(--text);text-decoration:none;display:flex;align-items:center;gap:8px;transition:color 0.2s}
.view-all:hover{color:var(--yellow)}
.view-all-arrow{width:28px;height:28px;display:flex;align-items:center;justify-content:center;transition:transform 0.2s}
.view-all:hover .view-all-arrow{transform:rotate(45deg)}
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:2px;align-items:stretch}
.rel-card{background:var(--mid);border:1px solid rgba(255,255,255,0.04);overflow:hidden;text-decoration:none;color:inherit;display:flex;flex-direction:column;height:100%;transition:border-color 0.2s}
.rel-card:hover{border-color:var(--yellow-hover)}
.rel-img{background:#fff;display:flex;align-items:center;justify-content:center;padding:24px;height:180px;min-height:180px;flex-shrink:0;box-sizing:border-box}
.rel-img img{width:auto;max-width:100px;max-height:100%;height:auto;object-fit:contain}
.rel-img-placeholder{font-size:40px;opacity:0.4}
.rel-body{padding:16px 20px 20px;border-top:1px solid var(--border);flex:1;display:flex;flex-direction:column;min-height:0}
.rel-type{font-family:var(--font-display);font-size:var(--typ-small);font-weight:700;letter-spacing:0.28em;text-transform:uppercase;color:var(--yellow);display:flex;align-items:center;gap:6px;margin-bottom:6px;min-height:1em}
.rel-type::before{content:'';width:14px;height:1px;background:var(--yellow)}
.rel-name{font-family:var(--font-display);font-size:var(--typ-title);font-weight:900;text-transform:uppercase;line-height:1.15;margin-bottom:8px;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3;overflow:hidden;min-height:calc(1.15em * 3)}
.rel-desc{font-size:var(--typ-body);font-weight:300;color:var(--text);line-height:1.6;margin-bottom:12px;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3;overflow:hidden}
.rel-vis{font-family:var(--font-display);font-size:var(--typ-small);font-weight:700;color:var(--yellow);margin-bottom:12px}
.rel-link{font-family:var(--font-display);font-size:var(--typ-small);font-weight:700;letter-spacing:0.2em;text-transform:uppercase;color:var(--text);display:flex;align-items:center;gap:6px;transition:color 0.2s;margin-top:auto}
.rel-card:hover .rel-link{color:var(--yellow)}

@media(max-width:1024px){nav{padding:14px 32px}.product-hero{padding:80px 32px 48px;grid-template-columns:280px 1fr}.product-info-col{padding-left:40px}.related-section{padding:48px 32px 0}.finder-strip{padding:40px 32px}footer{padding:48px 32px 24px}.footer-top{grid-template-columns:1fr 1fr;gap:40px}.related-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){nav{padding:14px 20px}.nav-links{display:none}.product-hero{grid-template-columns:1fr;padding:80px 20px 40px}.product-img-col{position:static}.product-info-col{padding-left:0;border-left:none;border-top:1px solid var(--border);padding-top:32px}.specs-grid{grid-template-columns:repeat(2,1fr)}.related-section{padding:40px 20px 0}.related-grid{grid-template-columns:repeat(2,1fr)}.finder-strip{flex-direction:column;text-align:center;padding:40px 20px}footer{padding:40px 20px 24px}.footer-top{grid-template-columns:1fr;gap:32px}.footer-bottom{flex-direction:column;text-align:center}.product-cta{flex-direction:column}}