:root{--ink:#161616;--text:#252525;--muted:#656565;--line:#d8d8d8;--radius:12px;--shadow:0 15px 40px #00000012;--rainbow:linear-gradient(120deg,#fff,#777,#111);--gloss:linear-gradient(160deg,#575757 0%,#242424 42%,#080808 43%,#292929 100%)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;font:16px/1.7 Arial,Helvetica,sans-serif;color:var(--ink);background:#fff}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button{font:inherit;cursor:pointer}h1,h2,h3,p{margin-top:0}h2{font-size:clamp(27px,3.2vw,42px);line-height:1.2;letter-spacing:-1.2px;margin-bottom:24px}h3{font-size:19px;line-height:1.4}p{color:#555}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #777;outline-offset:5px}.container{width:min(1220px,calc(100% - 64px));margin-inline:auto}.icon-sprite{position:absolute;width:0;height:0;overflow:hidden}.icon{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;vertical-align:middle}.top-strip{background:#151515;color:#fff;font-size:12px}.top-strip__inner,.top-strip__links{display:flex;justify-content:space-between;align-items:center;gap:24px}.top-strip p{margin:8px 0;color:#ddd}.top-strip .icon{margin-right:8px}.site-header{position:sticky;top:0;z-index:30;background:linear-gradient(#fff,#f4f4f4);border-bottom:1px solid #ddd;box-shadow:0 4px 16px #00000008}.header-shell{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:88px}.brand img{width:150px;max-height:70px;object-fit:contain}.main-nav{display:flex;gap:5px;align-items:center}.main-nav>a{padding:10px 13px;font-size:14px;font-weight:bold;border-radius:6px}.main-nav>a:hover,.nav-cta{background:var(--gloss);color:#fff}.menu-toggle{display:none;border:1px solid #bbb;background:#fff;padding:10px;border-radius:5px}.menu-toggle span{display:block;width:23px;height:2px;background:#111;margin:5px}.steel-hero{display:grid;grid-template-columns:1.05fr 1fr;gap:60px;padding-top:55px;padding-bottom:50px;align-items:center}.eyebrow{font-size:11px;letter-spacing:2px;font-weight:bold;color:#696969;margin-bottom:20px}.steel-hero h1{font-size:clamp(48px,5.8vw,82px);line-height:1.06;letter-spacing:-4px;margin:22px 0 25px}.steel-hero em{font-style:normal;color:#777}.lead{font-size:18px;line-height:1.7}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;border:1px solid #bbb;border-radius:6px;padding:13px 20px;font-size:14px;font-weight:bold;box-shadow:inset 0 1px #ffffff66;transition:transform .2s}.btn:hover{transform:translateY(-2px)}.btn-primary{background:var(--gloss);color:#fff;border-color:#333;box-shadow:inset 0 1px #999,0 6px 16px #0002}.btn-light{background:linear-gradient(#fff,#e5e5e5);color:#111}.hero-tags{display:flex;gap:18px;margin-top:34px;font-size:12px;color:#777}.hero-visual{position:relative;min-height:475px;border-radius:12px;overflow:hidden;background:#222}.hero-visual>img{width:100%;height:475px;object-fit:cover;filter:grayscale(1)}.hero-visual:after{content:"";position:absolute;inset:0;background:linear-gradient(transparent 30%,#000d)}.visual-note{position:absolute;bottom:28px;left:30px;right:24px;color:#fff;z-index:1}.visual-note span{font-size:10px;letter-spacing:2px}.visual-note strong{display:block;font-size:30px;line-height:1.25;margin:12px 0}.visual-note small{font-size:10px;color:#ccc}.section-tabs{display:grid;grid-template-columns:repeat(4,1fr);background:var(--gloss);color:#fff;border-radius:10px;box-shadow:inset 0 1px #aaa,0 12px 28px #0002;overflow:hidden}.section-tabs a{padding:20px 24px;border-right:1px solid #ffffff25;font-size:13px}.section-tabs a:hover{background:#ffffff18}.section{padding-block:82px}.intro-grid{display:grid;grid-template-columns:1fr 2fr;gap:70px}.intro-grid>div{max-width:800px}.intro-grid .eyebrow{padding-top:8px}.section-top{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:30px}.section-top h2{margin-bottom:0}.price-section{background:linear-gradient(125deg,#fafafa,#e8e8e8 60%,#fff);border-block:1px solid #ddd}.unit{font-size:13px;color:#666}.table-wrap{overflow:auto;border:1px solid #ccc;border-radius:10px;box-shadow:var(--shadow);background:white}table{border-collapse:collapse;width:100%;text-align:left}th{background:var(--gloss);color:#fff;font-size:13px;letter-spacing:.3px}th,td{padding:17px 28px;border-bottom:1px solid #ddd}td:last-child,th:last-child{text-align:right}td:last-child{font-weight:bold;font-variant-numeric:tabular-nums}tbody tr:nth-child(even){background:#f7f7f7}.price-note{font-size:12px;margin:18px 0 0;max-width:1000px}.price-note a{text-decoration:underline}.text-link{font-size:13px;border-bottom:1px solid #111;white-space:nowrap}.material-list article{display:grid;grid-template-columns:60px 1fr 1.7fr;gap:28px;padding:25px 0;border-bottom:1px solid #ddd;align-items:start}.material-number{font-size:13px;color:#888;padding-top:3px}.material-list h3,.material-list p{margin:0}.material-list p{font-size:14px}.dark-section{background:var(--gloss);color:white}.dark-section p{color:#ccc}.value-grid{display:grid;grid-template-columns:1fr 1fr;gap:100px}.value-grid article{border-bottom:1px solid #ffffff30;margin-bottom:25px;padding-bottom:10px}.value-grid article:last-child{margin-bottom:0}.value-grid h3{margin-bottom:10px}.value-grid p{font-size:14px}.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:25px;margin-top:40px}.steps article{border-top:2px solid #222;padding-top:20px}.steps span{font-size:30px;color:#999}.steps h3{margin-top:15px;font-size:17px}.steps p{font-size:14px}.faq-layout{border-top:1px solid #ddd;display:grid;grid-template-columns:1fr 1.3fr;gap:90px}.faq details{border-bottom:1px solid #ccc;padding:18px 0}.faq summary{font-weight:bold;cursor:pointer;list-style-position:outside;margin-left:18px;padding-left:6px}.faq details p{font-size:14px;margin:15px 0 0 24px}.fabric-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}.fabric-card{border:1px solid #ddd;border-radius:10px;overflow:hidden;background:#fff}.fabric-card img{width:100%;height:220px;object-fit:cover}.fabric-card h3{padding:18px!important;margin:0;font-size:18px}.section-heading{margin-bottom:30px}.section-heading .section-title{max-width:780px}.more-news{margin-top:25px}.contact-band{background:var(--gloss);color:white;padding:40px;display:flex;align-items:center;justify-content:space-between;gap:25px;border-radius:12px;margin-bottom:60px}.contact-band h2{font-size:30px;margin:0}.contact-band .eyebrow{color:#ccc}.contact-band .btn{white-space:nowrap}.footer{background:#101010;color:#eee;padding:55px 0 0}.footer p{color:#aaa;font-size:14px}.footer__grid{display:grid;grid-template-columns:1.3fr .8fr 1.3fr;gap:60px}.footer h3{font-size:15px}.footer ul{padding:0;list-style:none;font-size:13px;color:#bbb;overflow-wrap:anywhere}.footer li{margin:10px 0}.footer-brand{font-size:28px;letter-spacing:3px}.footer-brand span{display:block;font-size:10px;letter-spacing:1px;margin-top:10px}.copyright{margin-top:35px;border-top:1px solid #333;padding:20px 0;font-size:11px;color:#888}.page-main{padding:45px 0 65px;background:linear-gradient(135deg,#fafafa,#e8e8e8 65%,#fff)}.page-panel{background:white;border:1px solid #d5d5d5;border-radius:12px;overflow:hidden;box-shadow:var(--shadow)}.page-head{padding:45px 48px;background:var(--gloss);color:white}.page-head h1{font-size:clamp(28px,3vw,44px);line-height:1.25;margin:18px 0}.page-head p{color:#ddd}.breadcrumb{display:flex;flex-wrap:wrap;gap:10px;font-size:12px}.product-area{padding:40px 48px}.product-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.product-card{display:grid;grid-template-columns:155px 1fr;align-items:center;border:1px solid #ddd;background:linear-gradient(135deg,#fff,#f0f0f0);border-radius:8px;overflow:hidden;transition:box-shadow .2s}.product-card:hover{box-shadow:0 8px 20px #0002}.product-media{height:145px;overflow:hidden}.product-media img{width:100%;height:100%;object-fit:cover}.product-title{padding:20px;font-weight:bold;line-height:1.4}.product-card.is-hidden{display:none}.load-more-wrap{display:flex;justify-content:center;margin-top:30px}.load-more{background:var(--gloss);color:white;border:0;border-radius:5px;padding:12px 25px;display:flex;gap:12px}.rich-content{overflow-wrap:anywhere;margin-bottom:35px}.rich-content img,.product-area img{max-width:100%;height:auto}.product-media img{height:100%}.rich-content table{display:block;max-width:100%;overflow:auto}.interior-contact{display:flex;gap:25px;justify-content:space-between;align-items:center;margin-top:35px;padding:25px;border:1px solid #ccc;border-radius:8px;background:#fff}.interior-contact span{font-size:13px;color:#666}.interior-contact .btn{white-space:nowrap}
@media(max-width:1050px){.main-nav>a{padding:8px;font-size:12px}.steel-hero{gap:30px}.steel-hero h1{letter-spacing:-2px}.value-grid{gap:50px}.product-card{grid-template-columns:110px 1fr}.steps{gap:15px}.faq-layout{gap:40px}.footer__grid{gap:25px}}
@media(max-width:800px){.container{width:calc(100% - 36px)}.header-shell{min-height:75px}.menu-toggle{display:block}.main-nav{display:none;position:absolute;top:100%;left:18px;right:18px;flex-direction:column;align-items:stretch;background:linear-gradient(#fff,#eee);padding:15px;border:1px solid #ccc;box-shadow:var(--shadow);border-radius:8px}.main-nav.is-open{display:flex}.main-nav>a{padding:13px;font-size:14px}.top-strip__links>a:last-child{display:none}.top-strip__inner{gap:8px}.top-strip p{font-size:10px}.top-strip__links{font-size:11px}.steel-hero{grid-template-columns:1fr;padding-top:35px;gap:30px}.steel-hero h1{font-size:62px}.hero-visual{min-height:330px}.hero-visual>img{height:330px}.section-tabs{grid-template-columns:1fr 1fr}.section-tabs a{border-bottom:1px solid #ffffff25;padding:16px;font-size:12px}.section{padding-block:50px}.intro-grid,.value-grid,.faq-layout{grid-template-columns:1fr;gap:20px}.section-top{align-items:start;flex-direction:column;gap:15px}.material-list article{grid-template-columns:35px 1fr;gap:12px}.material-list p{grid-column:2}.steps{grid-template-columns:1fr 1fr;gap:25px}.fabric-grid{grid-template-columns:1fr}.contact-band{flex-direction:column;align-items:start;padding:28px}.footer__grid{grid-template-columns:1fr;gap:20px}.page-head,.product-area{padding:25px}.product-grid{grid-template-columns:1fr}.product-card{grid-template-columns:125px 1fr}.interior-contact{flex-direction:column;align-items:start}.hero-tags{gap:12px;font-size:11px}.price-note{font-size:11px}th,td{padding:14px;font-size:13px}.visual-note strong{font-size:27px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}

.steel-photo-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.steel-photo-grid figure{margin:0;background:linear-gradient(#fff,#eee);border:1px solid #ddd;border-radius:10px;overflow:hidden}.steel-photo-grid img{width:100%;height:260px;object-fit:cover}.steel-photo-grid figcaption{padding:14px 18px;font-size:13px}.gallery-more{margin-top:25px}.gallery-more summary{padding:15px 20px;background:var(--gloss);color:#fff;border-radius:6px;cursor:pointer;width:fit-content;margin:0 auto 25px}.steel-video{display:grid;grid-template-columns:1fr 1.6fr;align-items:center;gap:40px;margin-top:40px;padding:30px;background:#f3f3f3;border:1px solid #ddd;border-radius:10px}.steel-video video{display:block;width:100%;max-height:480px;background:#111;border-radius:8px}.hero-visual>img{filter:none}@media(max-width:800px){.steel-photo-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.steel-photo-grid img{height:190px}.steel-photo-grid figcaption{padding:12px;font-size:12px}.steel-video{grid-template-columns:1fr;padding:20px;gap:20px}}@media(max-width:440px){.steel-photo-grid{grid-template-columns:1fr}.steel-photo-grid img{height:260px}}

/* Restore the three regional columns in the database contact block. */
.nationwide-locations .row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;margin:0;align-items:start}
.nationwide-locations .row::before,.nationwide-locations .row::after{display:none}
.nationwide-locations .row>.col-md-4{float:none;width:auto;min-width:0;padding:24px;border:1px solid #ddd;border-radius:10px;background:linear-gradient(145deg,#fff,#f0f0f0);box-shadow:inset 0 1px 0 #fff}
.nationwide-locations h2{text-align:center;margin-bottom:30px;font-size:clamp(23px,2.4vw,32px)}
.nationwide-locations h3{margin:0 0 18px;padding:13px 16px;border-radius:6px;background:var(--gloss);color:#fff}
.nationwide-locations h3 span{color:inherit!important}
.nationwide-locations ul{padding-left:20px;margin:0 0 20px;overflow-wrap:anywhere}
.nationwide-locations li{margin-bottom:8px}
.nationwide-locations p{margin:18px 0 8px}
@media(max-width:767px){.nationwide-locations .row{grid-template-columns:1fr;gap:20px}}

/* Balanced Vietnamese typography, aligned SVG icons and material photography. */
body{font-family:Arial,Helvetica,sans-serif;font-size:16px;line-height:1.75}
h1,h2,h3,h4,button,input,select,textarea{font-family:inherit}
h2{font-size:clamp(26px,2.8vw,36px);line-height:1.35;letter-spacing:-.6px}
h3{line-height:1.5;font-weight:700}
.steel-hero h1{font-size:clamp(42px,4.8vw,66px);line-height:1.17;letter-spacing:-1.8px;margin:18px 0 24px}
.steel-hero{gap:48px;padding-top:42px;padding-bottom:42px}
.lead{font-size:17px;line-height:1.85;max-width:520px}
.eyebrow{font-size:12px;letter-spacing:1.4px;line-height:1.7;margin-bottom:16px}
.hero-visual,.hero-visual>img{height:460px;min-height:0}.hero-visual>img{object-position:center 62%}
.visual-note strong{font-size:27px;line-height:1.45}.visual-note small{font-size:12px}
.icon{display:inline-block;width:20px;height:20px;min-width:20px;flex:0 0 20px;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;vertical-align:middle}
.btn,.main-nav .nav-cta,.top-strip p,.top-strip__links a,.hero-tags span,.steel-service-strip span,.steel-service-strip a{display:inline-flex;align-items:center;gap:9px}
.btn{min-height:48px;line-height:1.5;padding:12px 18px;font-size:14px}.main-nav .nav-cta{line-height:1.5;gap:8px}.main-nav .nav-cta .icon{width:18px;height:18px;min-width:18px;flex-basis:18px}
.top-strip .icon{margin:0;width:16px;height:16px;min-width:16px;flex-basis:16px}.top-strip p,.top-strip__links a{font-size:12px}.hero-tags{gap:18px;flex-wrap:wrap}.hero-tags .icon{width:15px;height:15px;min-width:15px;flex-basis:15px}
.steel-service-strip{background:linear-gradient(135deg,#f8f8f8,#e9e9e9);border-bottom:1px solid #ddd}.steel-service-strip>.container{display:flex;justify-content:space-between;gap:20px;padding-block:12px;font-size:13px;color:#444}
.intro-grid{grid-template-columns:1fr 1.2fr;gap:50px;align-items:center}.intro-photo{margin:0;position:relative;overflow:hidden;border-radius:12px}.intro-photo img{width:100%;height:360px;object-fit:cover}.intro-photo figcaption{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(transparent,#000c);color:#fff;padding:40px 22px 20px;font-size:14px}
.material-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}
.material-list article.material-photo-card{display:flex;flex-direction:column;padding:0;gap:0;border:1px solid #ddd;border-radius:10px;overflow:hidden;background:linear-gradient(145deg,#fff,#f5f5f5)}
.material-photo-card>img{width:100%;height:225px;object-fit:cover;object-position:center}
.material-card-copy{padding:22px;display:grid;grid-template-columns:34px 1fr;gap:10px 12px;align-content:start}
.material-list .material-number{display:flex;align-items:center;justify-content:center;width:32px;height:32px;padding:0;border:1px solid #d2d2d2;border-radius:6px;background:linear-gradient(#fff,#e9e9e9);font-size:12px;color:#333}
.material-list h3{font-size:18px;align-self:center;letter-spacing:0}.material-list p{grid-column:1/-1;font-size:14px;line-height:1.8;margin-top:5px}
.process-photo-banner{display:grid;grid-template-columns:1fr 1fr 1fr;gap:22px;margin-bottom:35px}.process-photo-banner img{width:100%;height:240px;object-fit:cover;border-radius:10px}
.steps h3{font-size:17px}.steps p,.value-grid p{line-height:1.8}.section{padding-block:64px}
.steel-photo-grid img{height:250px;object-position:center}.steel-photo-grid figcaption{font-size:14px;line-height:1.6;min-height:68px;display:flex;align-items:center}
.steel-video h3{font-size:24px}.steel-video p{font-size:15px}.footer-icon{vertical-align:middle;margin-right:7px}
.rich-content,.rich-content p,.rich-content li{font-family:Arial,Helvetica,sans-serif!important;line-height:1.8}.rich-content span,.rich-content font{font-family:inherit!important}
@media(max-width:1050px){.material-list{grid-template-columns:repeat(2,minmax(0,1fr))}.steel-hero{gap:28px}.header-shell{gap:18px}}
@media(max-width:800px){.steel-hero h1{font-size:clamp(40px,8vw,56px);letter-spacing:-1px}.steel-hero{gap:28px;padding-top:30px}.hero-visual,.hero-visual>img{height:340px}.visual-note strong{font-size:24px}.intro-grid{grid-template-columns:1fr;gap:25px}.intro-photo img{height:300px}.steel-service-strip>.container{flex-wrap:wrap;justify-content:center;gap:8px 20px;font-size:12px}.steel-service-strip span:nth-child(2){display:none}.process-photo-banner{gap:12px}.process-photo-banner img{height:170px}.section{padding-block:44px}.material-card-copy{padding:18px}.material-photo-card>img{height:200px}.eyebrow{letter-spacing:1px}}
@media(max-width:540px){.material-list{grid-template-columns:1fr;gap:22px}.material-photo-card>img{height:250px}.process-photo-banner{grid-template-columns:1fr 1fr}.process-photo-banner img:last-child{grid-column:1/-1;height:220px}.hero-tags{gap:10px 16px}.hero-tags span{font-size:12px}.steel-photo-grid img{height:250px}.actions{gap:10px}.btn{font-size:13px;padding:12px 15px}}