:root{--yellow:#ffd100;--yellow-dark:#e9bd00;--ink:#0b0c0e;--muted:#64686f;--line:#dedfe2;--soft:#f5f6f7;--white:#fff;--max:1240px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--white);font-family:Inter,Arial,sans-serif;line-height:1.55;-webkit-font-smoothing:antialiased}img{display:block;max-width:100%;height:auto}a{color:inherit}.container{width:min(var(--max),calc(100% - 48px));margin-inline:auto}
.topbar{background:var(--ink);color:#fff;font-size:12px}.topbar .container{height:34px;display:flex;align-items:center;justify-content:space-between}.topbar-links{display:flex;gap:22px}.topbar a{text-decoration:none;color:#fff}
header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(16px)}.header-inner{height:78px;display:flex;align-items:center;gap:34px}.logo{margin-right:auto}.logo img{width:auto;height:42px}nav{display:flex;align-items:center;gap:26px}nav a{position:relative;padding:28px 0;text-decoration:none;font-size:13px;font-weight:700;white-space:nowrap}nav a:after{content:"";position:absolute;left:0;right:0;bottom:18px;height:2px;background:var(--yellow);transform:scaleX(0);transition:transform .2s}nav a:hover:after,nav a.active:after{transform:none}.btn-header-contact,.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;text-decoration:none;font-size:14px;font-weight:800;min-height:46px;padding:0 22px;border:1px solid transparent;transition:.2s}.btn-header-contact,.btn-primary{background:var(--yellow);color:#0b0c0e}.btn-header-contact:hover,.btn-primary:hover{background:var(--yellow-dark);transform:translateY(-1px)}.btn-header-contact svg,.btn svg{width:18px;fill:currentColor}.btn-outline{border-color:#aeb1b6;background:#fff}.btn-outline:hover{border-color:var(--ink)}.hamburger{display:none;border:0;background:none;padding:10px}.hamburger span{display:block;width:25px;height:2px;background:var(--ink);margin:5px}
.hero{overflow:hidden;border-bottom:1px solid var(--line);padding:68px 0 56px}.hero-grid{min-height:560px;display:grid;grid-template-columns:46% 54%;align-items:center}.hero-copy{position:relative;z-index:2}.hero h1{max-width:680px;margin:0 0 24px;font-size:clamp(48px,5.2vw,78px);line-height:.98;letter-spacing:-.058em;font-weight:900}.hero-copy>p{max-width:560px;margin:0 0 32px;color:#4f545b;font-size:18px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.hero-trust{display:flex;gap:26px;margin:32px 0 0;padding:0;list-style:none;color:#555b62;font-size:13px;font-weight:600}.hero-trust li{position:relative}.hero-trust li+li:before{content:"";position:absolute;left:-14px;top:50%;width:3px;height:3px;border-radius:50%;background:#8a8e94}.hero-media{height:100%;position:relative;background:linear-gradient(145deg,#f7f7f7,#fff)}.hero-headset{position:absolute;width:min(80%,610px);height:90%;object-fit:contain;right:11%;top:2%;filter:drop-shadow(0 28px 26px rgba(0,0,0,.16))}.hero-speaker{position:absolute;width:39%;right:-2%;bottom:-1%;filter:drop-shadow(0 24px 24px rgba(0,0,0,.2))}.tech-line{position:absolute;right:0;top:15%;width:50%;height:1px;background:var(--yellow)}.tech-line:before,.tech-line:after{content:"";position:absolute;background:var(--yellow)}.tech-line:before{right:0;top:0;width:1px;height:90px}.tech-line:after{left:0;top:-4px;width:9px;height:9px;border-radius:50%}
.need-nav{border-bottom:1px solid var(--line)}.need-grid{display:grid;grid-template-columns:repeat(3,1fr)}.need-grid a{min-height:116px;padding:24px 30px;display:grid;grid-template-columns:42px 1fr;grid-template-rows:auto auto;column-gap:18px;align-content:center;border-left:1px solid var(--line);text-decoration:none;transition:.2s}.need-grid a:last-child{border-right:1px solid var(--line)}.need-grid a:hover{box-shadow:inset 0 -4px var(--yellow);background:#fcfcfc}.need-icon{grid-row:1/3;font-weight:900;color:#999;font-size:13px}.need-grid strong{font-size:15px}.need-grid small{color:var(--muted)}
.product-section,.benefits,.knowledge{padding:94px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:42px}.section-index{margin:0 0 9px;color:#777d84;font-size:11px;font-weight:800;letter-spacing:.17em}.section-head h2{margin:0;font-size:clamp(32px,3.5vw,50px);line-height:1.05;letter-spacing:-.045em}.text-link{text-decoration:none;font-size:13px;font-weight:700;padding:12px 0}.text-link span{margin-left:8px;font-size:18px}.product-rail{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.product{background:#fff;padding:0 28px 25px}.product-image{display:flex;height:330px;align-items:center;justify-content:center;background:#fff}.product-image img{width:94%;height:90%;object-fit:contain;transition:transform .35s}.product:hover .product-image img{transform:scale(1.035)}.product h3{margin:0 0 7px;font-size:18px}.product h3 a{text-decoration:none}.product p{min-height:48px;margin:0 0 22px;color:var(--muted);font-size:13px}.product-bottom{display:flex;align-items:center;justify-content:space-between}.product-bottom strong{font-size:20px}.product-bottom a{display:grid;place-items:center;width:38px;height:38px;border:1px solid var(--line);text-decoration:none;font-size:19px;transition:.2s}.product-bottom a:hover{background:var(--yellow);border-color:var(--yellow)}
.solution-band{min-height:440px;position:relative;display:grid;align-items:center;overflow:hidden;background:#111;color:#fff}.solution-bg{position:absolute;inset:0;background:url("/giai-phap-jabra.jpg") center/cover no-repeat;opacity:.57}.solution-band:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(5,6,8,.97) 0%,rgba(5,6,8,.83) 43%,rgba(5,6,8,.12) 74%)}.solution-content{position:relative;z-index:1}.solution-content h2{max-width:610px;margin:0 0 18px;font-size:clamp(36px,4vw,56px);line-height:1.05;letter-spacing:-.045em}.solution-content p{max-width:570px;margin:0 0 27px;color:#d3d5d8}.solution-content>div{display:flex;align-items:center;gap:28px}.solution-phone{color:#fff;text-decoration:none;font-weight:700}
.benefits{background:var(--soft)}.section-head.compact{justify-content:center;text-align:center}.benefit-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid #cfd1d4;border-bottom:1px solid #cfd1d4}.benefit-grid article{padding:35px 26px;border-right:1px solid #cfd1d4}.benefit-grid article:last-child{border:0}.benefit-grid span{display:grid;place-items:center;width:44px;height:44px;margin-bottom:26px;border:2px solid var(--yellow);font-size:12px;font-weight:900}.benefit-grid h3{margin:0 0 8px;font-size:15px}.benefit-grid p{margin:0;color:var(--muted);font-size:13px}
.knowledge{padding-bottom:105px}.blog-rail{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.blog-rail article a{text-decoration:none}.blog-rail img{width:100%;aspect-ratio:16/9;object-fit:cover;filter:saturate(.88);transition:.25s}.blog-rail article:hover img{filter:saturate(1);transform:translateY(-3px)}.blog-rail h3{margin:18px 0 9px;font-size:17px;line-height:1.35}.blog-rail span{font-size:13px;font-weight:700}
.final-cta{padding:45px 0;border-top:1px solid var(--line);background:#f8f8f8}.final-cta .container{display:flex;align-items:center;justify-content:space-between;gap:30px}.final-cta h2{margin:0 0 5px;font-size:28px;letter-spacing:-.03em}.final-cta p{margin:0;color:var(--muted)}.final-cta .container>div:last-child{display:flex;gap:10px}
/* Shared inner-page system */
.page-hero{padding:68px 0;background:var(--soft);border-bottom:1px solid var(--line)}.page-hero h1{max-width:900px;margin:0 0 16px;font-size:clamp(38px,5vw,64px);line-height:1.02;letter-spacing:-.05em}.page-hero p{max-width:760px;margin:0;color:var(--muted);font-size:17px}.breadcrumb{padding:18px 0;color:var(--muted);font-size:13px}.breadcrumb a{text-decoration:none}.content-wrap{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:48px;padding:68px 0}.content-wrap article{min-width:0}.content-wrap article h2{margin-top:38px;line-height:1.15;letter-spacing:-.025em}.content-wrap article img{border-radius:0}.sidebar-card{position:sticky;top:105px;padding:25px;border:1px solid var(--line);background:#fff}.sidebar-card h3{margin-top:0}.sidebar-card a{margin:10px 0}.product-grid,.products-grid,.category-grid,.blog-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.product-card,.cat-card,.blog-card,.card{display:flex;min-width:0;flex-direction:column;padding:20px;border:1px solid var(--line);background:#fff;transition:.25s}.product-card:hover,.cat-card:hover,.blog-card:hover,.card:hover{transform:translateY(-3px);box-shadow:0 18px 45px rgba(0,0,0,.08)}.product-card img{width:100%;height:260px;object-fit:contain;background:var(--soft)}.product-card h3{margin:18px 0 8px}.product-card .desc{color:var(--muted);font-size:13px}.price{margin:8px 0 16px;font-size:19px;font-weight:900}.btn-small,.btn-readmore,.product-card>a:last-child{display:inline-flex;align-items:center;justify-content:center;align-self:flex-start;margin-top:auto;padding:10px 18px;background:var(--yellow);color:var(--ink);text-decoration:none;font-size:13px;font-weight:800}.cat-card a{font-weight:800}.faq details,.jv-faq details{margin:12px 0;padding:17px 20px;border:1px solid var(--line)}.faq summary,.jv-faq summary{cursor:pointer;font-weight:800}.notice{padding:16px 18px;border-left:4px solid var(--yellow);background:#fff9d7}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse}th,td{padding:12px;border:1px solid var(--line);text-align:left}
footer{background:#0b0c0e;color:#fff;padding:64px 0 24px}.footer-grid{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:48px}.footer-col h4{margin:0 0 18px;font-size:15px}.footer-col p,.footer-col a{display:block;color:#b8bbc0;text-decoration:none;font-size:13px;line-height:1.7;margin:8px 0}.footer-col a:hover{color:var(--yellow)}.zalo-qr{margin-top:15px;width:92px}.footer-bottom{margin-top:45px;padding-top:20px;border-top:1px solid #292b2f;color:#777c83;font-size:12px}.floating-actions{position:fixed;right:16px;bottom:16px;z-index:999;display:flex;flex-direction:column;gap:8px}.floating-actions a{min-height:46px;padding:0 16px;display:flex;align-items:center;justify-content:center;text-decoration:none;font-size:12px;font-weight:800;box-shadow:0 8px 30px rgba(0,0,0,.18)}.floating-actions .call{background:var(--yellow)}.floating-actions .zalo{background:#0877ff;color:#fff}
@media(max-width:1050px){.topbar-links span{display:none}nav{position:fixed;inset:78px 0 auto auto;width:min(86vw,370px);height:calc(100vh - 78px);padding:28px;background:#fff;display:flex;align-items:flex-start;flex-direction:column;gap:4px;transform:translateX(102%);box-shadow:-20px 30px 40px rgba(0,0,0,.14);transition:.25s}nav.active{transform:none}nav a{padding:12px 0;font-size:15px}.hamburger{display:block}.btn-header-contact{display:none}.hero-grid{grid-template-columns:52% 48%;min-height:510px}.hero h1{font-size:55px}.hero-headset{width:100%;right:0}.hero-speaker{width:48%}.product-image{height:280px}.product-grid,.products-grid,.category-grid,.blog-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.content-wrap{grid-template-columns:1fr}.sidebar-card{position:static}}
@media(max-width:760px){.container{width:min(100% - 28px,var(--max))}.topbar .container{justify-content:center}.topbar-links{display:none}.header-inner{height:68px}.logo img{height:37px}nav{inset:68px 0 auto auto;height:calc(100vh - 68px)}.hero{padding:44px 0 0}.hero-grid{display:block;min-height:0}.hero h1{font-size:clamp(42px,13vw,59px);max-width:96%}.hero-copy>p{font-size:16px}.hero-actions{display:grid;grid-template-columns:1fr 1fr}.hero-actions .btn{padding:0 10px}.hero-trust{gap:18px;font-size:11px;flex-wrap:wrap}.hero-media{height:390px;margin-top:24px}.hero-headset{width:92%;height:100%;right:8%}.hero-speaker{width:42%;right:0}.need-grid{grid-template-columns:1fr}.need-grid a,.need-grid a:last-child{min-height:88px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.product-section,.benefits,.knowledge{padding:66px 0}.section-head{align-items:flex-start;margin-bottom:28px}.section-head h2{font-size:34px}.text-link{font-size:0;width:36px}.text-link span{font-size:22px}.product-rail{display:flex;overflow:auto;scroll-snap-type:x mandatory;margin-right:-14px}.product{min-width:84vw;scroll-snap-align:start;padding:0 20px 24px}.product-image{height:285px}.solution-band{min-height:510px}.solution-band:after{background:linear-gradient(90deg,rgba(5,6,8,.96),rgba(5,6,8,.58))}.solution-content h2{font-size:39px}.benefit-grid{grid-template-columns:1fr 1fr}.benefit-grid article:nth-child(2){border-right:0}.benefit-grid article:nth-child(-n+2){border-bottom:1px solid #cfd1d4}.blog-rail{display:flex;overflow:auto;scroll-snap-type:x mandatory}.blog-rail article{min-width:82vw;scroll-snap-align:start}.final-cta .container{align-items:flex-start;flex-direction:column}.final-cta .container>div:last-child{width:100%;display:grid;grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr;gap:35px 24px}.footer-grid .footer-col:first-child{grid-column:1/-1}.floating-actions{left:10px;right:10px;bottom:10px;flex-direction:row}.floating-actions a{flex:1}footer{padding-bottom:80px}.product-grid,.products-grid,.category-grid,.blog-grid{grid-template-columns:1fr}.page-hero{padding:48px 0}.content-wrap{padding:48px 0}}
@media(max-width:430px){.hero-actions{grid-template-columns:1fr}.hero-media{height:330px}.benefit-grid{grid-template-columns:1fr}.benefit-grid article{border-right:0;border-bottom:1px solid #cfd1d4!important}.footer-grid{grid-template-columns:1fr}.footer-grid .footer-col:first-child{grid-column:auto}.final-cta .container>div:last-child{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}