:root{--ink:#111827;--ink-2:#1f2937;--muted:#64748b;--line:#e2e8f0;--paper:#fff;--paper-2:#f8fafc;--brand:#f59e0b;--brand-2:#d97706;--brand-soft:#fff7e6;--green:#047857;--radius:20px;--shadow:0 18px 55px rgba(15,23,42,.12);--max:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper);line-height:1.65;-webkit-font-smoothing:antialiased}img{display:block;max-width:100%}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{cursor:pointer}.container{width:min(var(--max),calc(100% - 36px));margin-inline:auto}.skip-link{position:fixed;left:14px;top:-60px;z-index:9999;background:#fff;padding:10px 14px;border-radius:10px;box-shadow:var(--shadow)}.skip-link:focus{top:14px}.topbar{background:var(--ink);color:#fff;font-size:.9rem}.topbar-inner{min-height:42px;display:flex;align-items:center;justify-content:space-between;gap:20px}.topbar-group{display:flex;align-items:center;gap:20px;flex-wrap:wrap}.topbar a:hover{color:#fbbf24}.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.95);backdrop-filter:blur(16px);border-bottom:1px solid rgba(226,232,240,.85)}.header-inner{min-height:82px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand-logo img{width:245px;height:auto}.nav-list{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0}.nav-link{display:block;padding:11px 12px;border-radius:11px;font-size:.94rem;font-weight:650;color:#374151}.nav-link:hover,.nav-link.active{background:var(--brand-soft);color:#92400e}.header-actions{display:flex;align-items:center;gap:10px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:11px 18px;border:1px solid transparent;border-radius:12px;font-weight:750;transition:.2s ease}.btn:hover{transform:translateY(-1px)}.btn-primary{background:var(--brand);color:#1f2937}.btn-primary:hover{background:#fbbf24}.btn-dark{background:var(--ink);color:#fff}.btn-dark:hover{background:#273449}.btn-outline{border-color:#cbd5e1;background:#fff}.btn-outline:hover{border-color:var(--brand);background:var(--brand-soft)}.btn-white{background:#fff;color:var(--ink)}.btn-sm{min-height:40px;padding:8px 14px;font-size:.9rem}.menu-toggle{display:none;width:46px;height:46px;border:1px solid var(--line);background:#fff;border-radius:12px;align-items:center;justify-content:center}.menu-toggle span,.menu-toggle span:before,.menu-toggle span:after{display:block;width:22px;height:2px;background:var(--ink);position:relative}.menu-toggle span:before,.menu-toggle span:after{content:"";position:absolute;left:0}.menu-toggle span:before{top:-7px}.menu-toggle span:after{top:7px}
.hero{position:relative;min-height:690px;display:flex;align-items:center;color:#fff;overflow:hidden;background:#111827}.hero-media{position:absolute;inset:0}.hero-media img{width:100%;height:100%;object-fit:cover;object-position:center 57%;filter:saturate(.82)}.hero-media:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,15,25,.93) 0%,rgba(10,15,25,.76) 47%,rgba(10,15,25,.28) 78%,rgba(10,15,25,.34) 100%)}.hero-content{position:relative;z-index:1;padding:95px 0 105px;max-width:770px}.eyebrow{display:inline-flex;align-items:center;gap:9px;color:#92400e;background:var(--brand-soft);border:1px solid #fde68a;padding:7px 12px;border-radius:999px;font-size:.82rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase}.hero .eyebrow{background:rgba(245,158,11,.14);border-color:rgba(245,158,11,.38);color:#fcd34d}.hero h1{margin:18px 0 18px;font-size:clamp(2.65rem,6vw,5.35rem);line-height:1.03;letter-spacing:-.045em}.hero h1 span{color:#fbbf24}.hero-lead{max-width:680px;font-size:1.18rem;color:#e5e7eb;margin:0 0 30px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:13px;margin-top:38px}.hero-point{padding:15px 16px;border:1px solid rgba(255,255,255,.18);background:rgba(17,24,39,.48);backdrop-filter:blur(8px);border-radius:14px}.hero-point strong{display:block;color:#fbbf24}.hero-point span{font-size:.86rem;color:#d1d5db}
.trust-strip{background:var(--brand);color:var(--ink)}.trust-grid{display:grid;grid-template-columns:1.1fr repeat(4,1fr);align-items:stretch}.trust-lead,.trust-item{padding:23px 24px}.trust-lead{font-weight:850;background:#e68a00}.trust-item{border-left:1px solid rgba(17,24,39,.13)}.trust-item b{display:block;font-size:1rem}.trust-item span{font-size:.82rem;opacity:.8}
.section{padding:92px 0}.section-alt{background:var(--paper-2)}.section-dark{background:var(--ink);color:#fff}.section-head{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:36px}.section-title{max-width:760px}.section-title h2{margin:12px 0 10px;font-size:clamp(2rem,4vw,3.35rem);line-height:1.1;letter-spacing:-.035em}.section-title p{margin:0;color:var(--muted);font-size:1.06rem}.section-dark .section-title p{color:#cbd5e1}.text-link{font-weight:800;color:#92400e}.text-link:hover{text-decoration:underline}.grid{display:grid;gap:24px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s ease}.card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#fcd34d}.card-media{position:relative;aspect-ratio:4/3;overflow:hidden;background:#e5e7eb}.card-media img{width:100%;height:100%;object-fit:cover;transition:.4s ease}.card:hover .card-media img{transform:scale(1.04)}.card-badge{position:absolute;left:15px;top:15px;background:rgba(17,24,39,.88);color:#fff;border-radius:999px;padding:6px 10px;font-size:.75rem;font-weight:800}.card-body{padding:23px}.card-body h3{margin:0 0 9px;font-size:1.3rem;line-height:1.25}.card-body p{margin:0 0 17px;color:var(--muted)}.card-meta{display:flex;gap:12px;align-items:center;justify-content:space-between;padding-top:15px;border-top:1px solid var(--line);font-size:.86rem}.product-card .card-media{aspect-ratio:1.12}.product-card ul{margin:0 0 18px;padding-left:20px;color:var(--muted)}.product-card li+li{margin-top:4px}.service-card{padding:28px;border-radius:var(--radius);background:#fff;border:1px solid var(--line)}.service-card:hover{border-color:#fbbf24;box-shadow:var(--shadow)}.service-icon{width:52px;height:52px;border-radius:15px;background:var(--brand-soft);display:grid;place-items:center;font-size:1.55rem;margin-bottom:22px}.service-card h3{font-size:1.25rem;margin:0 0 8px}.service-card p{margin:0;color:var(--muted)}
.split{display:grid;grid-template-columns:1.04fr .96fr;gap:58px;align-items:center}.split-media{position:relative}.split-media>img{width:100%;aspect-ratio:4/4.4;object-fit:cover;border-radius:26px}.split-float{position:absolute;right:-22px;bottom:28px;max-width:255px;background:#fff;border-radius:18px;padding:20px;box-shadow:var(--shadow);border:1px solid var(--line)}.split-float strong{font-size:2rem;display:block;color:var(--brand-2)}.check-list{list-style:none;margin:25px 0 30px;padding:0;display:grid;gap:13px}.check-list li{position:relative;padding-left:32px}.check-list li:before{content:"✓";position:absolute;left:0;top:0;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;background:var(--brand);font-weight:900;font-size:.8rem}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#334155;border-radius:22px;overflow:hidden}.stat{padding:30px 22px;background:#1f2937}.stat strong{display:block;font-size:2.25rem;color:#fbbf24;line-height:1}.stat span{display:block;margin-top:8px;color:#cbd5e1;font-size:.9rem}
.process{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step}.process-step{position:relative;padding:27px 24px;background:#fff;border:1px solid var(--line);border-radius:18px;counter-increment:step}.process-step:before{content:"0" counter(step);display:block;font-size:2rem;font-weight:900;color:#f59e0b;margin-bottom:15px}.process-step:not(:last-child):after{content:"→";position:absolute;right:-17px;top:48%;z-index:2;width:34px;height:34px;display:grid;place-items:center;border-radius:50%;background:var(--ink);color:#fff}.process-step h3{margin:0 0 8px}.process-step p{margin:0;color:var(--muted);font-size:.93rem}
.gallery{display:grid;grid-template-columns:1.2fr .8fr .8fr;grid-template-rows:260px 260px;gap:16px}.gallery-item{position:relative;overflow:hidden;border-radius:20px;cursor:zoom-in;background:#e5e7eb}.gallery-item:first-child{grid-row:1/3}.gallery-item img{width:100%;height:100%;object-fit:cover;transition:.35s}.gallery-item:hover img{transform:scale(1.04)}.gallery-caption{position:absolute;inset:auto 0 0;padding:35px 18px 17px;color:#fff;background:linear-gradient(transparent,rgba(0,0,0,.8));font-weight:750}.cta{border-radius:28px;padding:48px;background:linear-gradient(120deg,#f59e0b,#fbbf24);color:var(--ink);display:flex;align-items:center;justify-content:space-between;gap:30px}.cta h2{margin:0 0 8px;font-size:clamp(1.8rem,4vw,3rem);line-height:1.08}.cta p{margin:0;max-width:650px}.cta-actions{display:flex;gap:10px;flex-wrap:wrap;flex-shrink:0}
.page-hero{position:relative;padding:110px 0 82px;background:#111827;color:#fff;overflow:hidden}.page-hero:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 82% 20%,rgba(245,158,11,.25),transparent 38%),linear-gradient(135deg,#111827,#1e293b)}.page-hero .container{position:relative}.breadcrumbs{display:flex;align-items:center;gap:8px;flex-wrap:wrap;color:#cbd5e1;font-size:.9rem;margin-bottom:18px}.breadcrumbs a:hover{color:#fbbf24}.page-hero h1{margin:0 0 15px;font-size:clamp(2.4rem,5vw,4.5rem);line-height:1.05;letter-spacing:-.04em}.page-hero p{max-width:760px;margin:0;color:#dbe4f0;font-size:1.08rem}
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:30px}.filter-btn{border:1px solid var(--line);background:#fff;border-radius:999px;padding:9px 15px;font-weight:700}.filter-btn.active,.filter-btn:hover{background:var(--ink);border-color:var(--ink);color:#fff}.search-wrap{margin-left:auto;position:relative}.search-wrap input{min-width:260px;border:1px solid var(--line);border-radius:999px;padding:10px 16px 10px 42px}.search-wrap:before{content:"⌕";position:absolute;left:16px;top:6px;font-size:1.35rem;color:var(--muted)}
.product-detail{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:start}.product-visual{position:sticky;top:110px}.product-visual img{width:100%;aspect-ratio:4/3.4;object-fit:cover;border-radius:24px}.mini-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:10px}.mini-gallery img{aspect-ratio:1.3;object-fit:cover;border-radius:12px}.product-info h1{font-size:clamp(2.2rem,4vw,3.9rem);line-height:1.07;margin:12px 0 16px}.product-info .lead{color:var(--muted);font-size:1.08rem}.tag-list{display:flex;gap:8px;flex-wrap:wrap;margin:20px 0}.tag{background:var(--brand-soft);color:#92400e;border:1px solid #fde68a;border-radius:999px;padding:6px 10px;font-size:.82rem;font-weight:750}.spec-table{width:100%;border-collapse:collapse;margin:28px 0}.spec-table th,.spec-table td{text-align:left;padding:13px 14px;border-bottom:1px solid var(--line);vertical-align:top}.spec-table th{width:38%;color:#475569;font-size:.9rem}.quote-box{background:var(--ink);color:#fff;padding:25px;border-radius:20px}.quote-box p{color:#cbd5e1}.quote-box .btn{margin-top:5px}
.quote-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:36px;align-items:start}.quote-panel{background:#fff;border:1px solid var(--line);border-radius:22px;padding:28px}.quote-panel h2{margin-top:0}.field-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.field{display:grid;gap:7px}.field.full{grid-column:1/-1}.field label{font-weight:700;font-size:.9rem}.field input,.field select,.field textarea{width:100%;border:1px solid #cbd5e1;border-radius:12px;padding:12px 13px;background:#fff;color:var(--ink)}.field textarea{min-height:115px;resize:vertical}.field small{color:var(--muted)}.result-box{background:var(--ink);color:#fff;border-radius:22px;padding:30px;position:sticky;top:112px}.result-price{font-size:2.6rem;font-weight:900;color:#fbbf24;line-height:1.05;margin:15px 0}.result-list{list-style:none;padding:0;margin:24px 0;display:grid;gap:12px}.result-list li{display:flex;justify-content:space-between;gap:15px;border-bottom:1px solid #334155;padding-bottom:10px}.notice{padding:14px 16px;border-radius:13px;background:#ecfdf5;color:#065f46;border:1px solid #a7f3d0;font-size:.9rem}.notice.warn{background:#fff7ed;color:#9a3412;border-color:#fed7aa}
.project-card{position:relative;border-radius:22px;overflow:hidden;min-height:400px;background:#111827}.project-card img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}.project-card:after{content:"";position:absolute;inset:0;background:linear-gradient(transparent 25%,rgba(0,0,0,.88))}.project-content{position:absolute;z-index:2;left:0;right:0;bottom:0;padding:28px;color:#fff}.project-content h3{margin:9px 0 8px;font-size:1.5rem}.project-content p{margin:0;color:#d1d5db}.project-meta{display:flex;gap:8px;flex-wrap:wrap}.project-meta span{font-size:.76rem;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);border-radius:999px;padding:5px 9px}
.timeline{position:relative;display:grid;gap:24px}.timeline:before{content:"";position:absolute;left:26px;top:15px;bottom:15px;width:2px;background:#fbbf24}.timeline-item{position:relative;padding-left:76px}.timeline-dot{position:absolute;left:9px;top:4px;width:36px;height:36px;border-radius:50%;background:var(--brand);display:grid;place-items:center;font-weight:900;border:7px solid #fff;box-sizing:content-box}.timeline-item h3{margin:0 0 5px}.timeline-item p{margin:0;color:var(--muted)}
.article-card .card-media{aspect-ratio:1.55}.article-meta{display:flex;gap:12px;color:var(--muted);font-size:.82rem;margin-bottom:10px}.article-body{max-width:800px;margin:0 auto}.article-body h2{margin-top:42px;font-size:1.8rem}.article-body h3{margin-top:30px}.article-body p,.article-body li{color:#374151}.article-body blockquote{margin:30px 0;padding:20px 24px;border-left:5px solid var(--brand);background:var(--brand-soft);font-weight:650}.article-hero-image{width:100%;max-height:520px;object-fit:cover;border-radius:24px;margin:32px 0}
.contact-grid{display:grid;grid-template-columns:.88fr 1.12fr;gap:34px}.contact-card{padding:26px;border:1px solid var(--line);border-radius:18px;background:#fff}.contact-card h3{margin:0 0 8px}.contact-card p{margin:0 0 12px;color:var(--muted)}.contact-list{list-style:none;margin:0;padding:0;display:grid;gap:14px}.contact-list li{display:flex;gap:12px;align-items:flex-start}.contact-icon{width:38px;height:38px;border-radius:11px;background:var(--brand-soft);display:grid;place-items:center;flex:0 0 auto}.map-placeholder{min-height:360px;border-radius:22px;background:linear-gradient(135deg,#e2e8f0,#f8fafc);border:1px solid var(--line);display:grid;place-items:center;text-align:center;padding:35px}.map-pin{font-size:3rem}.faq{display:grid;gap:12px}.faq-item{border:1px solid var(--line);border-radius:15px;background:#fff;overflow:hidden}.faq-question{width:100%;border:0;background:#fff;text-align:left;padding:18px 52px 18px 19px;font-weight:800;position:relative}.faq-question:after{content:"+";position:absolute;right:18px;font-size:1.4rem;top:12px}.faq-item.open .faq-question:after{content:"−"}.faq-answer{display:none;padding:0 19px 18px;color:var(--muted)}.faq-item.open .faq-answer{display:block}
.footer{background:#0b1120;color:#fff;padding:70px 0 20px}.footer-grid{display:grid;grid-template-columns:1.35fr .75fr .85fr 1fr;gap:42px}.footer-logo{width:230px;filter:brightness(0) invert(1)}.footer-about{color:#94a3b8;max-width:390px}.footer h3{font-size:1rem;margin:0 0 16px}.footer-links{list-style:none;margin:0;padding:0;display:grid;gap:9px;color:#cbd5e1}.footer-links a:hover{color:#fbbf24}.footer-bottom{margin-top:44px;padding-top:20px;border-top:1px solid #263246;display:flex;justify-content:space-between;gap:20px;color:#94a3b8;font-size:.84rem}.demo-note{color:#fbbf24}.floating-actions{position:fixed;right:18px;bottom:18px;z-index:90;display:grid;gap:10px}.float-btn{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;color:#fff;box-shadow:0 10px 30px rgba(15,23,42,.25);font-size:1.25rem;font-weight:900}.float-call{background:#047857}.float-zalo{background:#1565c0;font-size:.78rem}.float-top{background:#111827;border:0;opacity:0;pointer-events:none;transition:.2s}.float-top.show{opacity:1;pointer-events:auto}.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,30px);z-index:120;background:#111827;color:#fff;border-radius:12px;padding:13px 18px;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.25s}.toast.show{opacity:1;transform:translate(-50%,0)}.lightbox{position:fixed;inset:0;z-index:200;background:rgba(3,7,18,.92);display:none;align-items:center;justify-content:center;padding:30px}.lightbox.open{display:flex}.lightbox img{max-width:min(1100px,94vw);max-height:84vh;border-radius:14px}.lightbox-close{position:absolute;right:22px;top:20px;width:48px;height:48px;border:1px solid rgba(255,255,255,.3);border-radius:50%;background:rgba(0,0,0,.3);color:#fff;font-size:1.5rem}
.empty-state{grid-column:1/-1;text-align:center;padding:55px;border:1px dashed #cbd5e1;border-radius:18px;color:var(--muted)}.not-found{min-height:70vh;display:grid;place-items:center;text-align:center;padding:60px 20px}.not-found strong{font-size:clamp(5rem,18vw,12rem);line-height:1;color:#f59e0b}.not-found h1{font-size:2.2rem;margin:0}.legal-note{font-size:.83rem;color:var(--muted);margin-top:18px}
@media (max-width:1080px){.nav-link{padding:10px 8px;font-size:.88rem}.header-actions .btn{display:none}.grid-4{grid-template-columns:repeat(2,1fr)}.trust-grid{grid-template-columns:repeat(2,1fr)}.trust-lead{grid-column:1/-1}.trust-item:nth-child(4){border-left:0}.footer-grid{grid-template-columns:1.3fr 1fr 1fr}.footer-grid>div:last-child{grid-column:1/-1}.product-detail{gap:34px}}
@media (max-width:860px){.topbar-inner{padding:8px 0}.topbar-group:last-child{display:none}.menu-toggle{display:flex}.site-nav{position:fixed;left:18px;right:18px;top:132px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:12px;opacity:0;visibility:hidden;transform:translateY(-10px);transition:.2s}.site-nav.open{opacity:1;visibility:visible;transform:none}.nav-list{display:grid}.nav-link{padding:13px}.hero{min-height:650px}.hero-points{grid-template-columns:1fr}.hero-point{display:flex;justify-content:space-between;gap:14px}.trust-grid{grid-template-columns:1fr 1fr}.split,.product-detail,.quote-layout,.contact-grid{grid-template-columns:1fr}.split-media{order:-1}.product-visual,.result-box{position:static}.grid-3{grid-template-columns:repeat(2,1fr)}.process{grid-template-columns:repeat(2,1fr)}.process-step:nth-child(2):after{display:none}.gallery{grid-template-columns:1fr 1fr;grid-template-rows:320px 230px 230px}.gallery-item:first-child{grid-column:1/-1;grid-row:auto}.gallery-item:nth-child(4){grid-column:1/-1}.cta{align-items:flex-start;flex-direction:column}.stats{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.container{width:min(100% - 28px,var(--max))}.topbar{font-size:.78rem}.topbar-group{gap:10px}.brand-logo img{width:205px}.header-inner{min-height:74px}.site-nav{top:120px}.hero{min-height:720px}.hero-content{padding:78px 0}.hero h1{font-size:2.75rem}.hero-lead{font-size:1rem}.hero-actions .btn{width:100%}.trust-grid{grid-template-columns:1fr}.trust-item{border-left:0;border-top:1px solid rgba(17,24,39,.13)}.section{padding:68px 0}.section-head{align-items:flex-start;flex-direction:column}.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.process{grid-template-columns:1fr}.process-step:after{display:none}.gallery{display:grid;grid-template-columns:1fr;grid-template-rows:repeat(4,260px)}.gallery-item:first-child,.gallery-item:nth-child(4){grid-column:auto}.split-float{position:relative;right:auto;bottom:auto;margin:-28px 16px 0}.stats{grid-template-columns:1fr 1fr}.stat{padding:22px 17px}.stat strong{font-size:1.75rem}.page-hero{padding:78px 0 62px}.filter-bar{display:grid;grid-template-columns:1fr 1fr}.filter-btn{font-size:.82rem;padding:9px 10px}.search-wrap{grid-column:1/-1;margin-left:0}.search-wrap input{width:100%;min-width:0}.field-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.footer-grid{grid-template-columns:1fr}.footer-grid>div:last-child{grid-column:auto}.footer-bottom{flex-direction:column}.floating-actions{right:12px;bottom:12px}.float-btn{width:48px;height:48px}.cta{padding:32px 24px}.cta-actions,.cta-actions .btn{width:100%}.product-info h1{font-size:2.35rem}.mini-gallery{grid-template-columns:1fr 1fr}.mini-gallery img:last-child{display:none}}