/* VLN Dịch vụ kỹ thuật — phần "REF" lấy từ CSS bản duyệt, giới hạn trong .vln-tech */
.vln-tech { --red:#c42129; --ink:#232927; --muted:#727872; --line:#e7e8e3; --bg:#f7f8f5;
	font-family: Arial, Helvetica, sans-serif; font-size: 14px; color: var(--ink); }
.vln-tech .wrap { max-width: 1370px; margin: auto; padding: 0 34px 40px; }
@media (max-width: 849px) { .vln-tech .wrap { padding: 0 17px 30px; } }
.vln-tech h1, .vln-tech h2, .vln-tech h3, .vln-tech h4 { color: var(--ink); text-transform: none; }
/* ---------- REF ---------- */
.vln-tech button,.vln-tech input,.vln-tech select{font:inherit}
.vln-tech button,.vln-tech a,.vln-tech select{touch-action:manipulation}
.vln-tech button{cursor:pointer}
.vln-tech button:focus-visible,.vln-tech a:focus-visible,.vln-tech input:focus-visible,.vln-tech select:focus-visible{outline:3px solid #e8a0a2;outline-offset:3px}
.vln-tech a{color:inherit;text-decoration:none}
.vln-tech button{border:0;background:none;color:inherit}
.vln-tech button:hover,.vln-tech a:hover{color:var(--red)}
.vln-tech .eyebrow{font-size:10px;font-weight:700;letter-spacing:1.8px;color:var(--red)}
.vln-tech h2{font-size:27px;letter-spacing:-.8px;margin:11px 0}
.vln-tech h3{font-size:16px}
.vln-tech .primary{background:var(--red);color:white;border-radius:4px;padding:15px 20px;font-weight:600;display:inline-flex;align-items:center;gap:25px}
.vln-tech .primary:hover{color:white;background:#a91720}
.vln-tech .hero .primary{margin-top:15px}
.vln-tech section{margin-bottom:38px}
.vln-tech .muted{color:var(--muted);font-size:12px;line-height:1.6}
.vln-tech details{font-size:11px;color:var(--muted);line-height:1.6}
.vln-tech .text-btn{color:var(--red);font-size:12px}
.vln-tech .detail-grid .primary{margin-top:15px}
@media(max-width:700px){
.vln-tech .hero .primary{font-size:11px;padding:13px 15px}
.vln-tech .eyebrow{font-size:8px;letter-spacing:1.3px}
.vln-tech h2{font-size:22px;line-height:1.3}
.vln-tech .section-title>.muted{display:none}
.vln-tech .consult .primary{margin-top:15px;font-size:12px}
}
.vln-tech .technical{margin-top:60px;scroll-margin-top:150px}
.vln-tech .tech-heading{margin-bottom:24px}
.vln-tech .tech-heading h2{font-size:32px;line-height:1.2}
.vln-tech .tech-heading>p{color:#777f73;font-size:13px}
.vln-tech .tech-shell{border:1px solid var(--line);border-radius:12px;overflow:hidden}
.vln-tech .tech-hero{padding:45px;background:#212b31;color:#fff}
.vln-tech .tech-kicker{font-size:10px;letter-spacing:1.4px;color:#f1aaa5}
.vln-tech .tech-hero h2{font-size:34px;line-height:1.25;margin:20px 0}
.vln-tech .tech-hero p{max-width:630px;color:#d6dcdd;font-size:14px;line-height:1.9}
.vln-tech .tech-hero .primary{margin-top:14px}
.vln-tech .tech-process{padding:32px 40px}
.vln-tech .sign-grid button.active{border-color:var(--red);background:#fff7f5}
.vln-tech .tech-tabs{display:flex;gap:10px;margin:22px 0}
.vln-tech .tech-tabs button{flex:1;text-align:left;padding:15px 18px;background:#f1f3f4;border:1px solid transparent;border-radius:7px}
.vln-tech .tech-tabs button.active{background:#222f36;color:#fff}
.vln-tech .tech-tabs strong,.vln-tech .tech-tabs small{display:block}
.vln-tech .tech-tabs strong{font-size:13px}
.vln-tech .tech-tabs small{font-size:11px;margin-top:6px;line-height:1.5}
.vln-tech .step-strip{display:flex;gap:12px;overflow-x:auto;padding:5px 0 14px;scroll-snap-type:x proximity}
.vln-tech .step-card{min-width:145px;flex:1;scroll-snap-align:start;text-align:left;padding:15px;border-radius:7px;background:#f5f6f6;border:1px solid transparent}
.vln-tech .step-card b{display:block;width:25px;text-align:center;border-radius:5px;padding:5px;background:#e8ecee;font-size:12px;margin-bottom:16px}
.vln-tech .step-card.active{background:#fff7f2;border-color:#d34531}
.vln-tech .step-card.active b{background:var(--red);color:#fff}
.vln-tech .step-card strong{font-size:12px;display:block;line-height:1.5}
.vln-tech .step-card small{font-size:10px;line-height:1.6;display:block;margin-top:6px;color:#727d80}
.vln-tech .step-detail{border:1px solid #78848a;border-radius:9px;padding:26px;margin-top:9px}
.vln-tech .step-label{color:var(--red);font-size:11px}
.vln-tech .step-label strong{color:#243239;font-size:19px;margin-left:10px}
.vln-tech .step-detail>p{font-size:14px;line-height:1.9;max-width:900px}
.vln-tech .tech-note{background:#eef5fa;border-radius:7px;padding:18px 20px;font-size:12px;line-height:1.8}
.vln-tech .tech-note b{color:#256ca1}
.vln-tech .tech-note p{margin:5px 0 0}
.vln-tech .step-controls{display:flex;justify-content:space-between;gap:15px;margin-top:20px}
.vln-tech .step-controls button{border:1px solid #d4dce0;padding:12px 18px;border-radius:6px;font-size:12px}
.vln-tech .step-controls button:last-child{background:#243039;color:white}
.vln-tech .step-controls button:disabled{opacity:.35;cursor:default}
.vln-tech .tech-request{margin:5px 40px 35px;background:#fff6f1;border:1px solid #f1e0d4;border-radius:10px;padding:30px;display:grid;grid-template-columns:1fr 1fr;gap:40px;scroll-margin-top:170px}
.vln-tech .tech-request h2{font-size:25px}
.vln-tech .field{display:block;font-size:12px;font-weight:600;margin:15px 0}
.vln-tech .field input,.vln-tech .field textarea{display:block;background:#fff;border:1px solid #ced6d8;border-radius:5px;padding:12px;width:100%;margin-top:8px;min-width:0;font-weight:400}
.vln-tech .field textarea{resize:vertical}
.vln-tech .field-pair{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.vln-tech .tech-consent{display:flex;align-items:flex-start;gap:8px;font-size:10px;line-height:1.7;margin:15px 0}
.vln-tech .tech-consent input{margin-top:2px;accent-color:var(--red)}
.vln-tech .need-tabs button.active{background:#fff;border-color:var(--red);color:#243039}
.vln-tech .tech-request .primary{font-size:12px;justify-content:center;width:100%;line-height:1.5}
.vln-tech .tech-request form>.muted{font-size:10px}
.vln-tech #techSuccess.visible{border:1px solid #b7cdb9;background:#f2f9f1;border-radius:6px;padding:18px;line-height:1.6;font-size:12px;overflow-wrap:anywhere}
.vln-tech #techSuccess small{color:#5d705c;font-size:10px}
.vln-tech #tech-process{scroll-margin-top:170px}
@media(max-width:700px){
.vln-tech .technical{margin-top:35px}
.vln-tech .tech-heading h2{font-size:26px}
.vln-tech .tech-heading>p{font-size:12px;line-height:1.6}
.vln-tech .tech-shell{border-radius:8px}
.vln-tech .tech-hero{padding:27px 20px}
.vln-tech .tech-hero h2{font-size:28px;letter-spacing:-.8px}
.vln-tech .tech-hero p{font-size:13px;line-height:1.8}
.vln-tech .tech-hero .primary{width:100%;justify-content:space-between;font-size:12px}
.vln-tech .tech-kicker{font-size:8px}
.vln-tech .tech-process{padding:25px 17px}
.vln-tech .tech-tabs{gap:8px;margin:19px 0}
.vln-tech .tech-tabs button{padding:13px 10px}
.vln-tech .tech-tabs strong{font-size:12px}
.vln-tech .tech-tabs small{font-size:10px}
.vln-tech .step-card{min-width:145px;padding:13px}
.vln-tech .step-detail{padding:17px}
.vln-tech .step-label strong{font-size:16px;display:inline-block;margin-left:5px}
.vln-tech .step-detail>p{font-size:13px;line-height:1.8}
.vln-tech .tech-note{font-size:11px;padding:14px}
.vln-tech .step-controls button{padding:11px;font-size:11px}
.vln-tech .tech-request{margin:0 14px 26px;padding:18px;display:block}
.vln-tech .tech-request h2{font-size:23px}
.vln-tech .field-pair{grid-template-columns:1fr;gap:0}
.vln-tech .field-pair .field{margin:9px 0}
.vln-tech .field input,.vln-tech .field textarea{font-size:16px;padding:11px}
.vln-tech .tech-request,.vln-tech #tech-process{scroll-margin-top:180px}
}
.vln-tech .full-product .primary{font-size:12px;gap:10px}
.vln-tech .full-product .primary svg{width:22px;height:22px}
.vln-tech .product-tabs button.active{color:var(--red);border-color:var(--red)}
.vln-tech .brand-controls>button:not(.text-btn){border:1px solid #d9ded5;border-radius:50%;width:32px;height:32px;font-size:23px;line-height:1}
@media(max-width:700px){
.vln-tech .brand-controls .text-btn{font-size:10px}
.vln-tech .brand-controls>button:not(.text-btn){width:26px;height:26px;font-size:20px}
}
@media(max-width:760px){
.vln-tech .shelf-heading>.text-btn{font-size:12px;padding:4px;white-space:nowrap}
}
.vln-tech .tech-v2{--tech-soft:#fff3f3;--tech-line:#ecdcdc}
.vln-tech .tech-v2 .tech-heading h2{font-size:30px}
.vln-tech .tech-problems{display:flex;gap:8px;overflow-x:auto;padding:0 0 18px;scrollbar-width:thin}
.vln-tech .tech-problems button{white-space:nowrap;border:1px solid var(--tech-line);background:white;padding:12px 18px;border-radius:30px;font-weight:600}
.vln-tech .tech-problems button.active{color:white;background:var(--red);border-color:var(--red)}
.vln-tech .tech-v2 .tech-shell{border:0;overflow:visible}
.vln-tech .tech-v2 .tech-hero{background:var(--tech-soft);border:1px solid var(--tech-line);border-radius:16px;color:var(--ink);padding:36px 40px}
.vln-tech .tech-v2 .tech-kicker{color:var(--red);font-size:13px;letter-spacing:0;font-weight:700}
.vln-tech .tech-v2 .tech-hero h2{max-width:900px;font-size:34px;margin:14px 0}
.vln-tech .tech-v2 .tech-hero p{color:#626262;max-width:850px;font-size:15px;line-height:1.8}
.vln-tech .tech-hero-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:22px}
.vln-tech .tech-v2 .tech-hero .primary{margin:0}
.vln-tech .tech-outline{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--red);color:var(--red);background:white;border-radius:8px;padding:13px 18px;font-weight:600}
.vln-tech .tech-hero-note{color:#965254;font-size:12px;margin-top:22px}
.vln-tech .tech-v2 .tech-process{padding:30px 0}
.vln-tech .tech-process-top{display:flex;justify-content:space-between;align-items:center;gap:20px}
.vln-tech .tech-process-top h3{font-size:25px;margin:8px 0}
.vln-tech .tech-inline-area{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--tech-line);padding:8px 12px;border-radius:10px;white-space:nowrap}
.vln-tech .tech-inline-area input{width:85px;padding:8px;border:1px solid var(--tech-line);border-radius:6px}
.vln-tech .tech-v2 .tech-tabs button{background:white;border:1px solid var(--tech-line)}
.vln-tech .tech-v2 .tech-tabs button.active{background:var(--tech-soft);color:var(--red);border-color:var(--red)}
.vln-tech .tech-v2 .step-strip{gap:14px;padding-bottom:15px}
.vln-tech .tech-v2 .step-card{flex:0 0 205px;min-height:172px;border:1px solid var(--tech-line);border-radius:12px;background:white;padding:18px}
.vln-tech .tech-v2 .step-card.active{background:var(--tech-soft);border:2px solid var(--red);padding:17px}
.vln-tech .tech-step-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;color:var(--red);font-size:13px}
.vln-tech .tech-step-top svg{width:27px;height:27px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.vln-tech .tech-v2 .step-card strong{font-size:17px;line-height:1.35}
.vln-tech .tech-v2 .step-card small{font-size:13px;color:#737373}
.vln-tech .tech-v2 .step-detail{border:1px solid var(--tech-line);border-radius:12px;padding:26px}
.vln-tech .tech-v2 .tech-note{background:var(--tech-soft);color:#633638;padding:14px 18px}
.vln-tech .tech-v2 .tech-note b{color:var(--red)}
.vln-tech .tech-product-row{display:flex;gap:14px;overflow-x:auto;padding:0 0 12px;align-items:stretch}
.vln-tech .tech-product{flex:0 0 205px;border:1px solid var(--tech-line);border-radius:12px;overflow:hidden;background:white;display:flex;flex-direction:column}
.vln-tech .tech-product>button{padding:0;text-align:left;flex:1}
.vln-tech .tech-product img{width:100%;height:175px;object-fit:contain;padding:12px;background:#fff}
.vln-tech .tech-product h4{font-size:13px;line-height:1.5;margin:10px 13px}
.vln-tech .tech-product-bottom{padding:8px 12px 14px;display:flex;align-items:center;gap:5px;justify-content:space-between;font-weight:700;color:var(--red);font-size:13px}
.vln-tech .tech-product-bottom button{width:34px;height:34px;border:1px solid var(--red);border-radius:50%;padding:7px;flex-shrink:0}
.vln-tech .tech-product-bottom svg{width:100%;height:100%}
.vln-tech .tech-advice{padding:22px;background:var(--tech-soft);font-size:13px;line-height:1.7}
.vln-tech .tech-advice-mark{font-size:40px;color:var(--red);margin-bottom:20px}
.vln-tech .tech-advice>span:last-child{margin-top:auto;color:var(--red);font-weight:700}
.vln-tech .tech-v2 .step-controls button:last-child{background:var(--red)}
.vln-tech .tech-help{display:flex;justify-content:space-between;gap:24px;align-items:center;padding:24px 30px;border-radius:12px;background:var(--red);color:white}
.vln-tech .tech-help h3{margin:0 0 8px}
.vln-tech .tech-help p{margin:0;font-size:14px;line-height:1.6}
.vln-tech .tech-help>a{flex-shrink:0}
.vln-tech .tech-v2 .tech-request{margin:28px 0;background:white;border:1px solid var(--tech-line);padding:30px}
.vln-tech .tech-v2 .tech-request h2{font-size:29px}
.vln-tech .tech-v2 #techForm{background:#fff8f8;padding:22px;border-radius:12px}
.vln-tech .tech-faq{padding:20px 0 0}
.vln-tech .tech-faq h2{font-size:26px}
.vln-tech .tech-faq details{border:1px solid var(--tech-line);padding:16px 20px;margin:10px 0;border-radius:10px}
.vln-tech .tech-faq summary{cursor:pointer;font-weight:700}
.vln-tech .tech-faq details p{line-height:1.8;color:#626262}
.vln-tech .tech-request-only{border:1px solid var(--tech-line);padding:25px;margin:20px 0;border-radius:12px}
.vln-tech .tech-request-only p{line-height:1.8}
@media(max-width:760px){
.vln-tech .tech-v2 .tech-heading h2{font-size:25px}
.vln-tech .tech-v2 .tech-hero{padding:24px 20px}
.vln-tech .tech-v2 .tech-hero h2{font-size:27px}
.vln-tech .tech-v2 .tech-hero p{font-size:14px}
.vln-tech .tech-hero-actions{align-items:stretch;flex-direction:column}
.vln-tech .tech-hero-actions>*{text-align:center;justify-content:center}
.vln-tech .tech-process-top{align-items:flex-start;flex-direction:column;gap:8px}
.vln-tech .tech-v2 .step-card{flex-basis:185px}
.vln-tech .tech-v2 .tech-process{padding:24px 0}
.vln-tech .tech-v2 .step-detail{padding:18px 14px}
.vln-tech .tech-v2 .step-label strong{display:block;margin:8px 0 0}
.vln-tech .tech-help{flex-direction:column;align-items:flex-start;padding:24px}
.vln-tech .tech-v2 .tech-request{padding:20px 16px;grid-template-columns:1fr;gap:20px}
.vln-tech .tech-v2 #techForm{padding:16px}
.vln-tech .tech-product{flex-basis:175px}
.vln-tech .tech-product img{height:155px}
.vln-tech .tech-v2 .tech-tabs button{padding:12px}
.vln-tech .tech-v2 .tech-request h2{font-size:26px}
}
.vln-tech .tech-home-back{display:inline-block;margin-bottom:25px}
.vln-tech .studio-tabs button.active{background:var(--red);color:white;border-color:var(--red)}
.vln-tech .studio-swatches .active i{outline-color:var(--red)}
.vln-tech .studio-options .primary{width:100%}
/* ---------- Điều chỉnh cho WordPress/Flatsome ---------- */
.vln-tech .tech-heading h1 { font-size: 32px; line-height: 1.25; margin: 8px 0 10px; letter-spacing: -.5px; }
@media (max-width: 650px) { .vln-tech .tech-heading h1 { font-size: 24px; } }
.vln-tech button { text-transform: none; letter-spacing: 0; min-height: 0; margin: 0; }
.vln-tech .tech-problems button, .vln-tech .tech-tabs button, .vln-tech .step-card, .vln-tech .step-controls button { font-weight: inherit; line-height: 1.4; }
.vln-tech .field input, .vln-tech .field textarea { margin: 0; box-shadow: none; }
.vln-tech .vln-hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; opacity: 0; }
.vln-tech #techSuccess.is-error { color: #a01818; }
.vln-tech .tech-product > a { display: block; color: inherit; }
.vln-tech .rank-math-breadcrumb { font-size: 12px; color: var(--muted); padding-top: 16px; }

/* Hàng chip vấn đề: vuốt ngang không hiện thanh cuộn (15/10/2026) */
.vln-tech .tech-problems{scrollbar-width:none}.vln-tech .tech-problems::-webkit-scrollbar{display:none}