:root{
  --navy:#022B63; --navy-2:#011E47; --navy-3:#0A3A7D;
  --gold:#D9A441; --gold-d:#B78222; --gold-l:#F3E1BC;
  --gray:#EEEEEE; --gray-2:#F5F5F5; --line:#DDDDDD;
  --text:#333333; --muted:#666666; --white:#FFFFFF;
  --radius:8px; --shadow:0 6px 24px rgba(2,43,99,.10);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Open Sans",Arial,sans-serif;color:var(--text);background:var(--white);font-size:15px;line-height:1.65;overflow-x:hidden}
body.lock{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button,input,select,textarea{font:inherit}
svg{width:1em;height:1em;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 22px;border-radius:6px;font-weight:700;font-size:14px;letter-spacing:.2px;cursor:pointer;border:2px solid transparent;transition:.25s}
.btn--gold{background:var(--gold);color:#fff;border-color:var(--gold)}
.btn--gold:hover{background:var(--gold-d);border-color:var(--gold-d)}
.btn--navy{background:var(--navy);color:#fff}
.btn--navy:hover{background:var(--navy-3)}
.btn--line{border-color:var(--navy);color:var(--navy)}
.btn--line:hover{background:var(--navy);color:#fff}
.btn--outline-light{border-color:#fff;color:#fff;border-radius:30px;padding:10px 26px}
.btn--outline-light:hover{background:#fff;color:var(--navy)}
.btn--block{width:100%;padding:14px}

/* ---------- Top bar ---------- */
.topbar{background:var(--navy);color:#fff;font-size:13px}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:52px}
.topbar__search{flex:0 1 380px;display:flex;background:#fff;border-radius:20px;overflow:hidden}
.topbar__search input{flex:1;border:0;padding:7px 14px;outline:0;min-width:0;color:var(--text)}
.topbar__search button{border:0;background:none;padding:0 14px;color:var(--navy);cursor:pointer;font-size:16px}
.topbar__hotline{padding:8px 26px;font-size:13px;white-space:nowrap;flex:none}

/* ---------- Header ---------- */
.header{background:#fff;position:relative;z-index:50}
.header__inner{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:14px 16px}
.logo{display:flex;align-items:center;gap:12px}
.logo__mark{width:64px;height:62px}
.logo__text{display:flex;flex-direction:column;line-height:1.1}
.logo__text b{font-size:24px;font-weight:800;color:var(--navy);letter-spacing:1.5px}
.logo__text small{font-size:11px;color:var(--gold-d);letter-spacing:1.2px;text-transform:uppercase;margin-top:3px}
.header__info{display:flex;gap:36px}
.info-item{display:flex;align-items:center;gap:10px;font-size:12.5px;line-height:1.45;max-width:250px}
.info-item b{display:block;color:var(--navy);font-size:13px}
.info-item a{color:var(--gold-d);font-weight:700}
.info-item__icon{flex:none;width:40px;height:40px;border-radius:50%;border:1.5px solid var(--navy);color:var(--navy);display:grid;place-items:center;font-size:20px}
.nav-toggle{display:none;width:44px;height:44px;border:0;background:var(--navy);border-radius:6px;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.nav-toggle span{width:22px;height:2px;background:#fff;transition:.25s}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Nav ---------- */
.nav{background:var(--navy);z-index:60}
.nav.is-fixed{position:fixed;top:0;left:0;right:0;box-shadow:0 4px 16px rgba(0,0,0,.25)}
.nav__list{display:flex;flex-wrap:wrap}
.nav__list>li{position:relative}
.nav__list>li>a{display:block;padding:14px 15px;color:#fff;font-weight:600;font-size:14px;white-space:nowrap;transition:.2s}
.nav__list>li>a:hover,.nav__list>li>a.is-active{background:var(--gold)}
.has-sub>a::after{content:"";display:inline-block;width:6px;height:6px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg);margin:0 0 3px 9px}
.sub{position:absolute;top:100%;left:0;min-width:240px;background:#fff;box-shadow:var(--shadow);border-top:3px solid var(--gold);opacity:0;visibility:hidden;transform:translateY(8px);transition:.2s}
.has-sub:hover .sub{opacity:1;visibility:visible;transform:none}
.sub a{display:block;padding:10px 18px;color:var(--navy);font-size:14px;border-bottom:1px solid var(--gray)}
.sub a:hover{background:var(--gray-2);color:var(--gold-d);padding-left:24px}

/* ---------- Hero ---------- */
.hero__grid{display:grid;grid-template-columns:1.25fr .8fr 1.25fr;gap:6px;height:min(560px,62vw);background:#fff}
.hero figure{overflow:hidden;position:relative}
.hero img{width:100%;height:100%;object-fit:cover;transition:transform 6s ease}
.hero figure:hover img{transform:scale(1.06)}
.hero__col{display:grid;grid-template-rows:1fr 1fr;gap:6px;min-height:0}
.hero__brand{display:grid;grid-template-rows:auto 1fr;gap:6px;min-height:0}
.hero__title{background:linear-gradient(135deg,#fbf7ef,#f1e6d1);padding:28px 26px;text-align:center}
.hero__title h1{font-size:clamp(22px,2.4vw,34px);font-weight:400;letter-spacing:4px;color:#3a3a3a}
.hero__title p{color:var(--gold-d);font-weight:700;text-transform:uppercase;letter-spacing:2px;font-size:13px;margin-top:6px}
.hero__title p span{display:block;color:var(--muted);font-weight:400;letter-spacing:.5px;text-transform:none;font-size:13px;margin-top:4px}
.hero__cta{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:16px}
.hero__cta .btn{padding:9px 16px;font-size:13px}

/* ---------- Sections ---------- */
.section{padding:72px 0}
.section--gray{background:var(--gray)}
.title-center{text-align:center;color:var(--gold);font-size:clamp(22px,2.6vw,30px);font-weight:700;letter-spacing:.5px;line-height:1.3}
.title-center--light{color:var(--gold)}
.title-left{color:var(--gold);font-size:clamp(24px,2.8vw,32px);font-weight:700;margin-bottom:18px;line-height:1.25}
.title-left--light{color:var(--gold)}
.lead{max-width:860px;margin:12px auto 34px;text-align:center;color:var(--muted)}
.lead--light{color:#d7e1f0}

/* Brand */
.brand{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
.brand__text p{margin-bottom:14px;text-align:justify}
.ticks{display:grid;grid-template-columns:1fr 1fr;gap:8px 18px;margin-top:18px}
.ticks li{position:relative;padding-left:26px;font-weight:600;color:var(--navy);font-size:14px}
.ticks li::before{content:"";position:absolute;left:0;top:4px;width:16px;height:16px;border-radius:50%;background:var(--gold) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.5'%3E%3Cpath d='m6 12 4 4 8-8'/%3E%3C/svg%3E") center/11px no-repeat}
.brand__media{position:relative;padding:28px 0 0 28px}
.brand__frame{position:absolute;top:0;left:0;width:72%;height:78%;border:3px solid var(--gold)}
.brand__media img{position:relative;width:100%;aspect-ratio:4/3;object-fit:cover;box-shadow:var(--shadow)}

/* Process */
.process{background:linear-gradient(rgba(2,43,99,.93),rgba(2,43,99,.93)),url("../img/stock/fac-process-sm.jpg") center/cover}
.process__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
.step{text-align:center;color:#d7e1f0;padding:10px}
.step__icon{width:96px;height:96px;margin:0 auto 16px;border-radius:50%;background:#fff;color:var(--navy);display:grid;place-items:center;font-size:42px;box-shadow:0 0 0 6px rgba(217,164,65,.35);transition:.3s}
.step:hover .step__icon{background:var(--gold);color:#fff;transform:translateY(-4px)}
.step h3{color:var(--gold);font-size:20px;margin-bottom:6px}
.step p{font-size:14px}

/* Projects */
.filters{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:26px}
.filters select{padding:11px 14px;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--text);cursor:pointer}
.projects{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.project{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:0 2px 10px rgba(0,0,0,.06);display:flex;flex-direction:column;transition:.3s}
.project:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.project__img{position:relative;aspect-ratio:4/3;overflow:hidden}
.project__img img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.project:hover .project__img img{transform:scale(1.08)}
.project__count{position:absolute;right:10px;bottom:10px;background:rgba(2,43,99,.85);color:#fff;font-size:12px;padding:3px 10px;border-radius:12px}
.project h3{padding:14px 14px 8px;color:var(--navy);font-size:16px;font-weight:700;line-height:1.4}
.project:hover h3{color:var(--gold-d)}
.tags{display:flex;flex-wrap:wrap;gap:6px;padding:0 14px 16px;margin-top:auto}
.tags span{background:var(--gray-2);font-size:12px;padding:3px 9px;border-radius:4px;color:var(--muted)}
.empty{text-align:center;color:var(--muted);padding:30px}

/* Products – thẻ báo giá */
.shop-box{background:#fff;border:1px solid var(--line);border-radius:4px;margin-bottom:30px}
.shop-box__head{display:flex;justify-content:space-between;align-items:center;padding:14px 18px;border-bottom:1px solid var(--line)}
.shop-box__head h3{color:var(--navy);font-size:18px;font-weight:600;letter-spacing:1px;position:relative}
.shop-box__head h3::after{content:"";position:absolute;left:0;bottom:-15px;width:100%;height:2px;background:var(--gold)}
.see-all{font-size:13px;color:var(--text)}
.see-all span{color:var(--gold-d);font-weight:800;font-size:16px}
.see-all:hover{color:var(--gold-d)}
.products{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;padding:20px}
.product{min-width:0;border:1px solid var(--line);background:#fff;padding:10px;display:flex;flex-direction:column;transition:.25s}
.product.is-more{display:none}
.products.show-all .product.is-more{display:flex}
.product:hover{box-shadow:0 6px 18px rgba(0,0,0,.12);border-color:var(--gold)}
.product__img{position:relative;display:block;aspect-ratio:1/1;overflow:hidden;background:var(--gray-2)}
.product__img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.product:hover .product__img img{transform:scale(1.06)}
.product__name{text-align:center;font-size:14px;font-weight:600;text-transform:uppercase;color:var(--navy);margin:12px 4px 10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;border-bottom:1px solid var(--line);padding-bottom:10px}
.product__name a:hover{color:var(--gold-d)}
.product__foot{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-top:auto}
.product__price{font-size:17px;font-weight:700;color:var(--text)}
.product__btn{border:0;background:var(--navy);color:#fff;font-size:12.5px;font-weight:600;padding:9px 14px;cursor:pointer;transition:.2s;white-space:nowrap}
.product__btn:hover{background:var(--gold)}
.note{font-size:13px;color:var(--muted);font-style:italic;text-align:center}
.ph{width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;text-align:center;padding:12px;
  background:radial-gradient(circle at 50% 35%,#0A3A7D,var(--navy) 70%)}
.ph img{width:46%!important;height:auto!important;opacity:.9;transform:none!important}
.ph b{color:#fff;font-size:15px;text-transform:uppercase;letter-spacing:1px}
.ph small{color:var(--gold-l);font-size:12px}
.modal__box img.is-ph{object-fit:contain;padding:50px;background:var(--navy)}
.flash{animation:flash 1.8s}
@keyframes flash{0%,100%{box-shadow:none}30%,70%{box-shadow:0 0 0 4px var(--gold)}}

/* Spaces */
.space-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.space{display:block;text-align:center}
.space img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:.4s}
.space:hover img{filter:brightness(1.08);transform:translateY(-3px);box-shadow:var(--shadow)}
.space h3{color:var(--gold);font-size:20px;margin-top:16px}
.space p{color:var(--muted);font-size:14px}

/* CTA */
.cta-wrap{background:var(--gray);padding:0 0 72px}
.cta{display:flex;align-items:center;gap:26px;padding:30px 40px;border-radius:4px;color:#fff;
  background:linear-gradient(90deg,rgba(2,43,99,.97) 55%,rgba(2,43,99,.55)),url("../img/stock/hero-9-sm.jpg") right center/cover}
.cta__icon{flex:none;width:70px;height:70px;border-radius:50%;background:var(--gold);display:grid;place-items:center;font-size:34px}
.cta__text{flex:1}
.cta__text h2{font-size:clamp(18px,2vw,24px);font-weight:800;letter-spacing:.5px}
.cta__text p{color:#d7e1f0;font-size:14px}

/* Factory */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:30px}
.stats div{background:var(--navy);color:#fff;text-align:center;padding:22px 10px;border-bottom:4px solid var(--gold)}
.stats b{display:inline;font-size:36px;color:var(--gold);font-weight:800}
.stats span{display:block;font-size:13.5px;color:#d7e1f0}
.factory{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.factory__item{overflow:hidden;aspect-ratio:4/3;position:relative}
.factory__item img{width:100%;height:100%;object-fit:cover;transition:.5s}
.factory__item:hover img{transform:scale(1.08)}
.factory__item::after{content:"+";position:absolute;inset:0;display:grid;place-items:center;color:#fff;font-size:40px;background:rgba(2,43,99,.45);opacity:0;transition:.3s}
.factory__item:hover::after{opacity:1}

/* Videos */
.videos{display:grid;grid-template-columns:2fr 1.35fr .8fr;gap:16px;align-items:start}
.video{background:#000;border-radius:var(--radius);overflow:hidden}
.video video{width:100%;display:block;aspect-ratio:16/9;background:#000}
.video--tall video{aspect-ratio:3/4}
.video figcaption{background:#fff;padding:10px 14px;font-weight:600;color:var(--navy);font-size:14px}

/* Contact (bố cục theo trang Liên hệ mẫu) */
.contact{background:#fff}
.contact__title{color:var(--gold);font-size:clamp(28px,3.2vw,38px);font-weight:700;line-height:1.2}
.contact__intro{color:var(--navy);margin:14px 0 28px;font-size:16px}
.contact__map{position:relative;border:1px solid var(--line)}
.contact__map iframe{display:block;width:100%;height:450px;border:0}
.contact__open{position:absolute;top:10px;left:10px;z-index:1;background:#fff;color:#1a73e8;font-size:14px;font-weight:600;padding:8px 12px;border-radius:2px;box-shadow:0 1px 4px rgba(0,0,0,.3)}
.contact__cols{display:grid;grid-template-columns:1fr 1fr;gap:50px;margin-top:40px}
.contact__sub{color:var(--gold);font-size:clamp(20px,2.2vw,26px);font-weight:700;margin-bottom:18px}
.contact__info h4{color:var(--navy);font-size:17px;margin-bottom:8px}
.contact__list li{padding:9px 0;border-bottom:1px dashed var(--line)}
.contact__list b{color:var(--navy)}
.contact__list a{color:var(--gold-d);font-weight:700}
.contact .form{border:1px solid var(--line);border-top:4px solid var(--gold);box-shadow:var(--shadow)}
.footer__hot{display:flex;flex-direction:column;gap:8px;align-items:flex-start}
.footer__phone{color:var(--gold);font-size:24px;font-weight:800;letter-spacing:.5px}
.footer__hot .btn{margin-top:8px}

/* Quote */
.quote{background:linear-gradient(rgba(1,30,71,.94),rgba(1,30,71,.94)),url("../img/design-02-sm.jpg") center/cover;color:#fff}
.quote__inner{display:grid;grid-template-columns:1fr 1.15fr;gap:50px;align-items:center}
.quote__info p{color:#d7e1f0;margin-bottom:18px}
.quote__list li{padding:9px 0;border-bottom:1px dashed rgba(255,255,255,.2)}
.quote__list b{color:var(--gold)}
.quote__list a:hover{color:var(--gold)}
.form{background:#fff;color:var(--text);padding:28px;border-radius:var(--radius);display:grid;gap:14px;border-top:4px solid var(--gold)}
.form__row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form label{display:grid;gap:5px;font-size:13px;font-weight:600;color:var(--navy)}
.form input,.form select,.form textarea{border:1px solid var(--line);border-radius:5px;padding:10px 12px;font-weight:400;color:var(--text);outline:0;width:100%;background:#fff}
.form input:focus,.form select:focus,.form textarea:focus{border-color:var(--gold);box-shadow:0 0 0 3px rgba(217,164,65,.2)}
.form__msg{font-size:14px;min-height:1px}
.form__msg.is-ok{color:#187a3a}
.form__msg.is-err{color:#c0392b}

/* Footer */
.footer{background:var(--navy);color:#d7e1f0;font-size:14px}
.footer h4{color:var(--gold);font-size:14px;margin-bottom:12px;letter-spacing:.5px}
.footer a:hover{color:var(--gold)}
.footer__cols{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding-top:50px;padding-bottom:30px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer__cols li{padding:4px 0}
.social{display:flex;gap:10px}
.social a{width:38px;height:38px;border-radius:50%;background:#fff;color:var(--navy);display:grid;place-items:center;font-size:11px;font-weight:800;font-size:18px}
.social a:first-child{font-size:11px;color:#0068ff}
.footer__main{display:grid;grid-template-columns:1fr 1.2fr 1.1fr;gap:34px;padding-top:34px;padding-bottom:34px}
.footer__brand{display:flex;flex-direction:column;align-items:flex-start}
.footer__brand b{color:#fff;font-size:22px;letter-spacing:1.5px;margin-top:6px}
.footer__brand small{color:var(--gold);font-size:11px;text-transform:uppercase;letter-spacing:1.2px;margin-bottom:10px}
.footer__company p{margin-bottom:6px}
.footer__map iframe{width:100%;height:220px;border:0;border-radius:6px}
.footer__bottom{text-align:center;padding:16px;background:var(--navy-2);font-size:13px}

/* Floating */
.float{position:fixed;left:16px;bottom:18px;z-index:90;display:flex;flex-direction:column;align-items:flex-start;gap:10px}
.float__pill{display:flex;align-items:center;gap:8px;color:#fff;font-weight:800;font-size:15px;padding:7px 16px;border-radius:24px;box-shadow:0 4px 12px rgba(0,0,0,.2);transition:.2s}
.float__pill:hover{transform:translateX(4px)}
.float__pill--blue{background:#0084ff}
.float__pill--zalo{background:#0068ff}
.float__pill--zalo i{font-style:normal;font-size:9px;background:#fff;color:#0068ff;border-radius:4px;padding:1px 3px}
.float__phone{display:flex;align-items:center}
.float__ring{width:52px;height:52px;border-radius:50%;background:var(--gold);color:#fff;display:grid;place-items:center;font-size:22px;position:relative;z-index:1;animation:ring 1.4s infinite}
.float__ring::before{content:"";position:absolute;inset:-10px;border-radius:50%;background:rgba(217,164,65,.3);animation:pulse 1.6s infinite;z-index:-1}
.float__phone b{background:var(--gold);color:#fff;padding:6px 14px 6px 22px;margin-left:-14px;border-radius:0 20px 20px 0;font-size:16px}
@keyframes ring{0%,50%,100%{transform:rotate(0)}10%,30%{transform:rotate(-15deg)}20%,40%{transform:rotate(15deg)}}
@keyframes pulse{0%{transform:scale(.7);opacity:1}100%{transform:scale(1.3);opacity:0}}
.to-top{position:fixed;right:16px;bottom:18px;width:42px;height:42px;border:0;border-radius:6px;background:var(--navy);color:#fff;font-size:20px;cursor:pointer;opacity:0;visibility:hidden;transition:.3s;z-index:90}
.to-top.is-show{opacity:1;visibility:visible}
.to-top:hover{background:var(--gold)}

/* Modal + Lightbox */
.modal,.lightbox{position:fixed;inset:0;z-index:200;background:rgba(0,10,30,.8);display:grid;place-items:center;padding:16px}
.modal[hidden],.lightbox[hidden]{display:none}
.modal__box{background:#fff;max-width:820px;width:100%;display:grid;grid-template-columns:1fr 1fr;border-radius:var(--radius);overflow:hidden;position:relative;max-height:92vh;animation:pop .25s}
.modal__box img{width:100%;height:100%;object-fit:cover;min-height:320px}
.modal__body{padding:30px 26px;display:flex;flex-direction:column;gap:12px;overflow:auto}
.modal__body h3{color:var(--navy);font-size:21px;text-transform:uppercase;line-height:1.35}
.modal__price{color:var(--gold-d);font-size:20px;font-weight:800}
.modal__actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:auto}
.modal__close,.lightbox__close{position:absolute;top:8px;right:12px;border:0;background:none;font-size:34px;line-height:1;cursor:pointer;color:var(--navy);z-index:2}
.lightbox figure{max-width:min(1200px,92vw);text-align:center}
.lightbox img{max-height:82vh;margin:0 auto;border-radius:4px;animation:pop .25s}
.lightbox figcaption{color:#fff;margin-top:10px;font-size:14px}
.lightbox__close{color:#fff;position:fixed;right:20px;top:14px}
.lightbox__nav{position:fixed;top:50%;transform:translateY(-50%);width:50px;height:50px;border-radius:50%;border:0;background:rgba(255,255,255,.15);color:#fff;font-size:32px;cursor:pointer}
.lightbox__nav:hover{background:var(--gold)}
.lightbox__prev{left:16px}.lightbox__next{right:16px}
@keyframes pop{from{opacity:0;transform:scale(.96)}to{opacity:1;transform:none}}

/* Reveal */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s,transform .7s}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}*{animation:none!important;transition:none!important}}

/* ---------- Responsive ---------- */
@media (max-width:1100px){
  .header__info{gap:18px}.info-item:first-child{display:none}
  .projects{grid-template-columns:repeat(3,1fr)}.products{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:980px){
  .topbar__welcome{display:none}
  .header__info{display:none}
  .nav-toggle{display:flex}
  .nav{display:none}
  .nav.is-open{display:block;position:absolute;left:0;right:0;top:100%;max-height:calc(100vh - 140px);overflow:auto;box-shadow:0 10px 20px rgba(0,0,0,.2)}
  .nav__list{flex-direction:column}
  .nav__list>li>a{border-bottom:1px solid rgba(255,255,255,.08)}
  .has-sub>a{display:flex!important;justify-content:space-between;align-items:center}
  .sub{position:static;opacity:1;visibility:visible;transform:none;display:none;box-shadow:none;border-top:0;background:var(--navy-2)}
  .sub-open .sub{display:block}
  .sub a{color:#d7e1f0;border-color:rgba(255,255,255,.06);padding-left:34px}
  .hero__grid{grid-template-columns:1fr 1fr;grid-template-rows:auto auto;height:auto}
  .hero__big{grid-column:1/-1;aspect-ratio:16/9}
  .hero__col{grid-template-rows:none;grid-template-columns:1fr 1fr;grid-column:1/-1}
  .hero__col figure{aspect-ratio:4/3}
  .hero__brand{grid-column:1/-1;grid-template-rows:auto}
  .hero__brand figure{display:none}
  .brand,.quote__inner,.contact__cols{grid-template-columns:1fr;gap:36px}
  .contact__map iframe{height:340px}
  .process__grid,.stats{grid-template-columns:repeat(2,1fr)}
  .projects{grid-template-columns:repeat(2,1fr)}.products{grid-template-columns:repeat(2,minmax(0,1fr))}
  .factory{grid-template-columns:repeat(3,1fr)}
  .videos{grid-template-columns:1fr 1fr}.video--wide{grid-column:1/-1}
  .footer__cols{grid-template-columns:repeat(2,1fr)}
  .footer__main{grid-template-columns:1fr 1fr}.footer__hot{grid-column:1/-1}
  .cta{flex-wrap:wrap;padding:26px}
  .modal__box{grid-template-columns:1fr}.modal__box img{min-height:0;max-height:38vh}
}
@media (max-width:600px){
  .section{padding:50px 0}
  .topbar__inner{gap:10px}
  .topbar__hotline{padding:7px 12px}
  .logo__mark{width:48px;height:46px}.logo__text b{font-size:19px}
  .ticks,.filters,.form__row,.space-grid{grid-template-columns:1fr}
  .projects{grid-template-columns:1fr}
  .products{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;padding:10px}
  .product{padding:6px}
  .product__name{font-size:12.5px;margin:8px 2px}
  .product__foot{flex-direction:column;align-items:stretch;gap:6px;text-align:center}
  .product__price{font-size:15px}
  .factory{grid-template-columns:repeat(2,1fr)}
  .videos{grid-template-columns:1fr}
  .footer__main{grid-template-columns:1fr}
  .cta{text-align:center;justify-content:center}
  .float__pill{font-size:12px;padding:6px 12px}
  .float__phone b{font-size:14px}
  .float__ring{width:46px;height:46px}
}

/* ================= TRANG NHÀ MÁY ================= */
.center-btn{text-align:center;margin-top:26px}
.page-hero{background-size:cover;background-position:center;color:#fff;padding:70px 0}
.page-hero h1{font-size:clamp(26px,3.6vw,42px);font-weight:800;letter-spacing:1px;color:#fff}
.page-hero p{color:#d7e1f0}
.page-hero .crumb{font-size:13px;margin-bottom:8px}
.page-hero .crumb a{color:var(--gold)}
.fac-intro__grid{display:grid;grid-template-columns:1.3fr 1fr;gap:50px;align-items:stretch}
.fac-intro p{margin-bottom:14px;text-align:justify}
.fac-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:22px}
.fac-stats div{border-left:4px solid var(--gold);padding:6px 14px;background:var(--gray-2)}
.fac-stats b{display:block;font-size:30px;font-weight:800;color:var(--navy);line-height:1.2}
.fac-stats span{font-size:13px;color:var(--muted)}
.fac-strength{background:var(--navy);color:#fff;padding:34px 34px 30px;clip-path:polygon(0 0,100% 0,100% 100%,12% 100%);padding-left:16%;position:relative}
.fac-strength::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:3px;background:var(--gold)}
.fac-strength h3{color:var(--gold);font-size:18px;letter-spacing:1px;margin-bottom:14px}
.fac-strength li{padding:7px 0 7px 18px;position:relative;font-weight:600;font-size:14px;text-transform:uppercase;letter-spacing:.3px}
.fac-strength li::before{content:"";position:absolute;left:0;top:15px;width:6px;height:6px;background:var(--gold);border-radius:50%}
.fac-photos{display:grid;grid-template-columns:2fr 1fr;gap:6px;border-top:3px solid var(--gold)}
.fac-photos a{overflow:hidden;display:block;aspect-ratio:16/9}
.fac-photos__side{aspect-ratio:auto!important}
.fac-photos img{width:100%;height:100%;object-fit:cover;transition:transform .8s}
.fac-photos a:hover img{transform:scale(1.04)}
.machines{background:linear-gradient(97deg,#fff 0 39%,var(--navy) 39%)}
.machines__grid{display:grid;grid-template-columns:1fr 1.7fr;gap:50px;align-items:start}
.machines__intro{padding-right:20px}
.machines__intro h2{color:var(--navy);font-size:clamp(28px,3.4vw,42px);font-weight:800;line-height:1.15;margin-bottom:18px;border-left:6px solid var(--gold);padding-left:14px}
.machines__intro p{margin-bottom:12px;text-align:justify}
.machines__list{display:grid;gap:16px}
.machine{display:grid;grid-template-columns:220px 1fr;gap:20px;align-items:center;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);padding:12px;border-radius:6px;transition:.25s}
.machine:hover{background:rgba(255,255,255,.12)}
.machine a{display:block;aspect-ratio:4/3;overflow:hidden;border-radius:4px;background:#fff}
.machine img{width:100%;height:100%;object-fit:cover;transition:.5s}
.machine:hover img{transform:scale(1.06)}
.machine h3{color:#fff;font-size:17px;text-transform:uppercase;margin-bottom:6px;display:flex;align-items:center;gap:10px}
.machine h3::before{content:"";flex:none;width:12px;height:12px;background:var(--gold);transform:rotate(45deg)}
.machine p{color:#d7e1f0;font-size:14px}
.tech-banner{background-size:cover;background-position:center;padding:70px 0;border-bottom:4px solid var(--gold)}
.tech-banner h2{color:#fff;font-size:clamp(22px,3vw,36px);font-weight:800;line-height:1.3;letter-spacing:.5px}
.prod-flow{display:grid;grid-template-columns:1.2fr 1fr;gap:50px;align-items:center}
.flow{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:16px;counter-reset:none}
.flow li{background:var(--navy);color:#fff;padding:16px;min-height:150px;display:flex;flex-direction:column;justify-content:space-between;position:relative;clip-path:polygon(0 0,100% 0,100% 82%,82% 100%,0 100%)}
.flow li:nth-child(odd){background:var(--navy-3)}
.flow b{font-size:34px;color:var(--gold);font-weight:800;line-height:1}
.flow span{font-weight:700;text-transform:uppercase;font-size:13px;line-height:1.4}
.prod-flow__img{display:block;overflow:hidden;aspect-ratio:3/4;border:3px solid var(--gold)}
.prod-flow__img img{width:100%;height:100%;object-fit:cover}
@media (max-width:980px){
  .fac-intro__grid,.machines__grid,.prod-flow{grid-template-columns:1fr;gap:30px}
  .fac-strength{clip-path:none;padding:28px}
  .machines{background:var(--navy)}
  .machines__intro h2{color:#fff}.machines__intro p{color:#d7e1f0}
  .prod-flow__img{aspect-ratio:16/10}
}
@media (max-width:600px){
  .fac-stats{grid-template-columns:1fr 1fr 1fr;gap:8px}.fac-stats b{font-size:22px}
  .fac-photos{grid-template-columns:1fr}.fac-photos__side{aspect-ratio:16/9!important}
  .machine{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr 1fr}
}

.demo-tag{position:absolute;left:6px;bottom:6px;background:rgba(0,0,0,.55);color:#fff;font-size:10.5px;padding:2px 7px;border-radius:3px;pointer-events:none}
.photo-credit{font-size:12px;color:#9fb0c8;text-align:center;padding:0 16px 14px}
.photo-credit a{text-decoration:underline}

/* Video nổi bật */
.video-feature{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;align-items:center;background:var(--navy);border-radius:var(--radius);padding:24px;margin-bottom:22px;border-bottom:4px solid var(--gold)}
.video--square video{aspect-ratio:1/1}
.video-feature .video{border-radius:6px}
.video-feature__text{color:#d7e1f0}
.video-feature__tag{display:inline-block;background:var(--gold);color:#fff;font-size:12px;font-weight:700;letter-spacing:1px;padding:4px 12px;border-radius:3px;margin-bottom:14px}
.video-feature__text h3{color:#fff;font-size:clamp(20px,2.2vw,28px);line-height:1.35;margin-bottom:14px}
.video-feature__text p{margin-bottom:22px}
@media (max-width:980px){.video-feature{grid-template-columns:1fr;gap:22px;padding:16px}}

/* ================= TRANG THIẾT KẾ / THI CÔNG ================= */
.tk-hero{background-size:cover;background-position:center;color:#fff;padding:80px 0 90px}
.tk-hero__kicker{color:#d7e1f0;font-size:18px;margin-bottom:6px}
.tk-hero h1{font-size:clamp(28px,4vw,48px);line-height:1.2;font-weight:800;margin-bottom:22px}
.tk-hero h1 span{color:var(--gold)}
.tk-hero__list{max-width:640px;display:grid;gap:10px;margin-bottom:28px}
.tk-hero__list li{position:relative;padding-left:22px;color:#e8eef7}
.tk-hero__list li::before{content:"";position:absolute;left:0;top:9px;width:9px;height:9px;background:var(--gold);transform:rotate(45deg)}
.tk-hero__list b{color:#fff}
.tk-hero__btn{padding:14px 34px;font-size:15px}
.svc-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px}
.svc{display:block;position:relative;overflow:hidden;border-radius:6px;aspect-ratio:3/4;background:var(--navy)}
.svc img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.svc:hover img{transform:scale(1.08)}
.svc__body{position:absolute;inset:auto 0 0 0;padding:60px 14px 16px;background:linear-gradient(transparent,rgba(1,30,71,.95));color:#fff;display:flex;flex-direction:column;gap:6px}
.svc__body b{font-size:15.5px;line-height:1.3}
.svc__body small{font-size:12.5px;color:#d7e1f0;line-height:1.45}
.svc:hover .svc__body b{color:var(--gold)}
.consult{background:linear-gradient(rgba(1,30,71,.95),rgba(1,30,71,.95)),url("../img/stock/tk-kts-sm.jpg") center/cover}
.consult__grid{display:grid;grid-template-columns:1fr 1.25fr;gap:44px;align-items:start}
.consult__intro{color:#d7e1f0}
.consult__intro h2{color:var(--gold);font-size:clamp(24px,2.8vw,34px);line-height:1.25;margin-bottom:14px}
.consult__intro img{border-radius:6px;margin:20px 0;border:3px solid var(--gold)}
.consult__hot a{color:var(--gold);font-weight:800;font-size:18px}
.consult__form h3{color:var(--navy);text-align:center;font-size:20px}
.consult__sub{text-align:center;color:var(--muted);font-size:13px;margin-top:-8px}
.form fieldset{border:1px solid var(--line);border-radius:6px;padding:10px 14px 12px;display:flex;flex-wrap:wrap;gap:6px 18px}
.form legend{font-size:13px;font-weight:700;color:var(--navy);padding:0 6px}
.form label.opt{display:flex;flex-direction:row;align-items:center;gap:7px;font-weight:400;color:var(--text);font-size:14px;cursor:pointer}
.form label.opt input{width:auto;accent-color:var(--gold)}
.pkg-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;align-items:stretch}
.pkg{background:#fff;border:1px solid var(--line);border-top:4px solid var(--navy);border-radius:6px;padding:24px 20px;display:flex;flex-direction:column;position:relative;transition:.25s}
.pkg:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.pkg--hot{border-top-color:var(--gold);box-shadow:var(--shadow)}
.pkg__badge{position:absolute;top:-13px;right:16px;background:var(--gold);color:#fff;font-size:11.5px;font-weight:700;padding:3px 10px;border-radius:12px}
.pkg h3{color:var(--navy);font-size:19px;display:flex;flex-direction:column}
.pkg h3 small{color:var(--gold-d);font-size:12px;letter-spacing:2px}
.pkg__price{font-size:28px;font-weight:800;color:var(--navy);margin:10px 0 8px}
.pkg__price span{font-size:14px;color:var(--muted);font-weight:600}
.pkg__for{font-size:13.5px;color:var(--muted);margin-bottom:14px;min-height:62px}
.pkg ul{flex:1;margin-bottom:18px}
.pkg li{position:relative;padding:6px 0 6px 24px;font-size:14px;border-bottom:1px dashed var(--gray)}
.pkg li::before{content:"✓";position:absolute;left:2px;top:5px;color:var(--gold-d);font-weight:800}
.steps6{list-style:none;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:14px;counter-reset:none;position:relative}
.steps6 li{text-align:center;position:relative}
.steps6 li:not(:last-child)::after{content:"";position:absolute;top:30px;left:calc(50% + 34px);right:calc(-50% + 34px);height:2px;background:var(--gold)}
.steps6 b{display:grid;place-items:center;width:60px;height:60px;margin:0 auto 12px;border-radius:50%;background:var(--navy);color:var(--gold);font-size:24px;font-weight:800;box-shadow:0 0 0 5px rgba(217,164,65,.25)}
.steps6 span{font-weight:600;color:var(--navy);font-size:14px;line-height:1.45;display:block}
.why-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.why{background:#fff;border-radius:6px;padding:24px 20px;border-left:4px solid var(--gold);box-shadow:0 2px 10px rgba(0,0,0,.05)}
.why h3{color:var(--navy);font-size:17px;margin-bottom:6px}
.why p{font-size:14px;color:var(--muted)}
.cmp{width:100%;border-collapse:collapse;background:#fff;font-size:14px}
.cmp th,.cmp td{border:1px solid var(--line);padding:11px 12px;text-align:left;vertical-align:top}
.cmp thead th{background:var(--navy);color:#fff}
.cmp tbody th{background:var(--gray-2);color:var(--navy);width:22%}
.cmp-wrap{overflow-x:auto}
@media (max-width:980px){
  .svc-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .consult__grid{grid-template-columns:1fr}
  .pkg-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps6{grid-template-columns:repeat(3,minmax(0,1fr));row-gap:26px}
  .steps6 li::after{display:none}
  .why-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:600px){
  .svc-grid{grid-template-columns:1fr 1fr}
  .pkg-grid,.why-grid{grid-template-columns:1fr}
  .steps6{grid-template-columns:1fr 1fr}
  .tk-hero{padding:50px 0 60px}
}
.pkg-grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.pkg--img{padding-top:0;overflow:visible}
.pkg--img>img{margin:0 -20px 18px;width:calc(100% + 40px);max-width:none;aspect-ratio:16/10;object-fit:cover;border-radius:2px 2px 0 0}
.pkg__price--sm{font-size:19px;color:var(--gold-d)}
.faq-wrap{max-width:900px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:6px;margin-bottom:10px;overflow:hidden}
.faq summary{cursor:pointer;padding:15px 48px 15px 18px;font-weight:700;color:var(--navy);list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);width:26px;height:26px;border-radius:50%;background:var(--gold);color:#fff;display:grid;place-items:center;font-size:18px;line-height:1}
.faq details[open] summary::after{content:"−"}
.faq details[open] summary{border-bottom:1px solid var(--gray)}
.faq details p{padding:14px 18px 16px;color:var(--text)}
@media (max-width:980px){.pkg-grid--3{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.pkg-grid--3{grid-template-columns:1fr}}

.project__img .demo-tag{bottom:10px;left:10px}
.fac-photos{position:relative}
.fac-photos::after{content:none;position:absolute;right:10px;bottom:10px;background:rgba(0,0,0,.55);color:#fff;font-size:11px;padding:2px 8px;border-radius:3px}

.mats{padding-bottom:40px}
.mats__grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.mat{position:relative;display:block;overflow:hidden;border-radius:6px;aspect-ratio:4/3;border-bottom:4px solid var(--gold)}
.mat img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.mat:hover img{transform:scale(1.06)}
.mat span{position:absolute;left:0;right:0;bottom:0;padding:30px 14px 12px;background:linear-gradient(transparent,rgba(1,30,71,.9));color:#fff;font-weight:700}
@media (max-width:600px){.mats__grid{grid-template-columns:1fr}}
.mat--fit{background:#2a1a10}.mat--fit img{object-fit:contain}

/* Ô khảo sát kiểu banner ảnh */
.survey-wrap{background:#fff;padding:56px 0 0}
.survey{background-size:cover;background-position:center;text-align:center;padding:70px 40px 64px;min-height:360px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:34px}
.survey h2{color:var(--gold);font-size:clamp(24px,3.4vw,44px);font-weight:800;line-height:1.35;max-width:1080px;letter-spacing:-.5px;text-shadow:0 2px 12px rgba(0,0,0,.25)}
.survey__btn{display:inline-block;background:var(--gold);color:#fff;font-weight:700;font-size:15px;padding:13px 30px;border-radius:30px;box-shadow:0 6px 18px rgba(0,0,0,.25);transition:.25s}
.survey__btn:hover{background:#fff;color:var(--navy)}
@media (max-width:600px){.survey{padding:44px 18px;min-height:0;gap:24px}}

/* ================= BÀI VIẾT ================= */
.posts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.post{background:#f6f6f6;display:flex;flex-direction:column;transition:.25s;min-width:0}
.section--gray .post{background:#fff}
.post:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.post__img{display:block;aspect-ratio:16/9;overflow:hidden}
.post__img img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.post:hover .post__img img{transform:scale(1.06)}
.post__body{padding:16px 18px 20px;text-align:center}
.post__cat{display:inline-block;font-size:11.5px;color:var(--gold-d);font-weight:700;text-transform:uppercase;letter-spacing:.6px;margin-bottom:6px}
.post h3{font-size:18px;line-height:1.4;margin-bottom:8px}
.post h3 a{color:var(--gold)}
.post h3 a:hover{color:var(--navy)}
.post p{font-size:14px;color:var(--text);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.quotes{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.quote-card{background:#fff;transition:.25s}
.quote-card:hover{box-shadow:var(--shadow)}
.quote-card__img{display:block;aspect-ratio:4/3;overflow:hidden}
.quote-card__img img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.quote-card:hover img{transform:scale(1.04)}
.quote-card h3{font-size:19px;line-height:1.4;margin-bottom:8px}
.quote-card h3 a{color:var(--gold)}
.quote-card p{font-size:14px}
.carousel{position:relative}
.carousel__track{display:grid;grid-auto-flow:column;grid-auto-columns:calc((100% - 40px)/3);gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;padding-bottom:4px}
.carousel__track::-webkit-scrollbar{display:none}
.carousel__track .post{scroll-snap-align:start}
.carousel__nav{position:absolute;top:30%;z-index:2;width:42px;height:42px;border-radius:50%;border:0;background:var(--navy);color:#fff;font-size:26px;line-height:1;cursor:pointer;box-shadow:var(--shadow)}
.carousel__nav:hover{background:var(--gold)}
.carousel__prev{left:-16px}.carousel__next{right:-16px}
.brands{background:var(--gray);padding:34px 0}
.brands__label{text-align:center;color:var(--muted);font-size:13px;text-transform:uppercase;letter-spacing:1px;margin-bottom:16px}
.brands__row{display:flex;flex-wrap:wrap;justify-content:center;gap:14px}
.brand-chip{background:#fff;padding:14px 28px;font-weight:800;font-size:20px;color:#5b6472;letter-spacing:.5px;border-radius:4px;transition:.25s}
.brand-chip:hover{color:var(--navy);box-shadow:var(--shadow)}
/* trang bài viết */
.page-hero--sm{padding:50px 0}
.page-hero--sm h1{font-size:clamp(22px,3vw,34px);max-width:900px;line-height:1.3}
.article-wrap{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:start}
.article{font-size:16px;line-height:1.8;min-width:0}
.article__cover{width:100%;border-radius:6px;margin-bottom:20px}
.article__lead{font-size:17.5px;font-weight:600;color:var(--navy);border-left:4px solid var(--gold);padding-left:14px;margin-bottom:18px}
.article h2{color:var(--navy);font-size:23px;margin:28px 0 10px;line-height:1.35}
.article h3{color:var(--gold-d);font-size:18px;margin:18px 0 6px}
.article p{margin-bottom:12px}
.article ul{margin:0 0 14px 20px;list-style:disc}
.article li{margin-bottom:6px}
.article figure{margin:22px 0}
.article figure img{width:100%;border-radius:6px}
.article figcaption{font-size:13.5px;color:var(--muted);text-align:center;margin-top:6px;font-style:italic}
.tbl{width:100%;border-collapse:collapse;font-size:14.5px;margin:10px 0 18px}
.tbl th,.tbl td{border:1px solid var(--line);padding:9px 12px;text-align:left}
.tbl thead th{background:var(--navy);color:#fff}
.tbl tbody tr:nth-child(even){background:var(--gray-2)}
.article__cta{background:var(--navy);color:#fff;padding:20px 22px;border-radius:6px;margin:28px 0 12px;display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px}
.article__cta b{color:var(--gold);font-size:18px;width:100%}
.article__cta a:not(.btn){color:var(--gold);font-weight:700}
.article__note,.article__src{font-size:13px;color:var(--muted)}
.article__src a{color:var(--navy);text-decoration:underline}
.article-side{position:sticky;top:70px}
.article-side h4{color:var(--navy);border-bottom:2px solid var(--gold);padding-bottom:8px;margin-bottom:12px}
.side-list li{border-bottom:1px solid var(--gray)}
.side-list a{display:grid;grid-template-columns:86px 1fr;gap:10px;padding:10px 0;align-items:center;font-size:14px;font-weight:600;color:var(--navy);line-height:1.4}
.side-list a:hover{color:var(--gold-d)}
.side-list img{width:86px;height:60px;object-fit:cover;border-radius:4px}
.side-cta{background:var(--gray);padding:18px;border-radius:6px;margin-top:20px;text-align:center}
.side-cta b{color:var(--navy);font-size:17px}
.side-cta p{font-size:14px;margin:6px 0 12px}
.tabs{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:26px}
.tab{border:1px solid var(--navy);background:#fff;color:var(--navy);padding:8px 18px;border-radius:20px;font-weight:600;cursor:pointer}
.tab.is-active,.tab:hover{background:var(--navy);color:#fff}
@media (max-width:980px){
  .posts{grid-template-columns:1fr 1fr}
  .carousel__track{grid-auto-columns:calc((100% - 20px)/2)}
  .article-wrap{grid-template-columns:1fr}.article-side{position:static}
}
@media (max-width:600px){
  .posts,.quotes{grid-template-columns:1fr}
  .carousel__track{grid-auto-columns:85%}
  .carousel__prev{left:-6px}.carousel__next{right:-6px}
  .brand-chip{font-size:16px;padding:10px 16px}
  .tbl{display:block;overflow-x:auto}
}
.post[hidden]{display:none!important}

/* Thẻ gỗ công nghiệp */
.mats__head{text-align:center;margin:6px 0 22px}
.mats__head h3{color:var(--navy);font-size:clamp(18px,2vw,22px);letter-spacing:.5px;display:inline-block;border-bottom:3px solid var(--gold);padding-bottom:6px}
.mats__head p{max-width:820px;margin:10px auto 0;color:var(--muted)}
.mats__head--nat{margin-top:40px}
.matgrid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.matcard{position:relative;background:#fff;border:1px solid var(--line);border-top:4px solid var(--navy);border-radius:6px;padding:16px 16px 18px;transition:.25s;display:flex;flex-direction:column}
.matcard:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-top-color:var(--gold)}
.matcard__badge{position:absolute;top:10px;right:10px;background:var(--gold);color:#fff;font-size:11px;font-weight:700;padding:2px 9px;border-radius:10px}
.matcard__fig{background:linear-gradient(180deg,#f7f4ee,#ece6da);border-radius:4px;padding:10px 6px 4px;margin-bottom:12px}
.matcard__svg{width:100%;height:auto;display:block}
.matcard h3{color:var(--navy);font-size:18px;line-height:1.25}
.matcard__sub{color:var(--gold-d);font-size:12.5px;font-weight:700;text-transform:uppercase;letter-spacing:.4px;margin-bottom:10px}
.matcard__spec{border-top:1px dashed var(--line);margin-bottom:10px}
.matcard__spec li{display:flex;justify-content:space-between;gap:8px;font-size:13px;padding:6px 0;border-bottom:1px dashed var(--line)}
.matcard__spec span{color:var(--muted)}
.matcard__spec b{color:var(--navy);text-align:right}
.matcard__use{font-size:13.5px;margin-bottom:6px}
.matcard__use b{color:var(--navy)}
.matcard__pro{font-size:13px;color:var(--muted);margin-top:auto;padding-top:4px}
.mats__src{text-align:center;font-size:12.5px;color:var(--muted);margin-top:16px}
.mats__src a{color:var(--navy);text-decoration:underline}
@media (max-width:1100px){.matgrid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (max-width:980px){.matgrid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:600px){.matgrid{grid-template-columns:1fr}}

/* ================= BÀN GHẾ HỌC TẬP ================= */
.study{padding:30px 0 60px;background:#fff}
.study__box{background:linear-gradient(180deg,#fdf0de,#fbe9d2);border:6px solid transparent;border-radius:6px;padding:34px 22px 30px;text-align:center;
  background-clip:padding-box;position:relative;box-shadow:0 0 0 6px #c99a5b inset}
.study__box::before{content:"";position:absolute;inset:-6px;border-radius:8px;padding:6px;background:linear-gradient(135deg,#8a5a2b,#e2b36f 40%,#a8743d 70%,#e7c189);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
.study__title{color:#5a3a22;font-size:clamp(20px,2.4vw,27px);font-weight:800;letter-spacing:.6px}
.study__orn{display:flex;align-items:center;justify-content:center;gap:10px;margin:12px 0 30px}
.study__orn span{width:90px;height:2px;background:linear-gradient(90deg,transparent,#5a3a22)}
.study__orn span:last-child{background:linear-gradient(90deg,#5a3a22,transparent)}
.study__orn i{width:9px;height:9px;background:#5a3a22;transform:rotate(45deg)}
.study__track{grid-auto-columns:calc((100% - 80px)/6);gap:16px}
.scard{position:relative;background:#fff;border-radius:8px;overflow:hidden;box-shadow:0 2px 10px rgba(90,58,34,.08);display:flex;flex-direction:column;scroll-snap-align:start;transition:.25s}
.scard:hover{transform:translateY(-4px);box-shadow:0 10px 24px rgba(90,58,34,.18)}
.scard__img{position:relative;display:block;aspect-ratio:1/1;overflow:hidden;background:#f3ece2}
.scard__img img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.scard:hover .scard__img img{transform:scale(1.06)}
.scard__off{position:absolute;top:10px;left:10px;z-index:2;width:42px;height:42px;border-radius:50%;background:#e03a3a;color:#fff;font-weight:800;font-size:13px;display:grid;place-items:center}
.scard h3{font-size:14px;line-height:1.45;font-weight:700;padding:12px 10px 6px;min-height:72px}
.scard h3 a{color:#5a3a22}
.scard h3 a:hover{color:var(--gold-d)}
.scard__price{margin-top:auto;padding:4px 10px 16px;line-height:1.35}
.scard__price b{color:#1f1f1f;font-size:16px;font-weight:800;border-bottom:1px solid currentColor}
.scard__price s{display:block;color:#9a9a9a;font-size:14px}
.scard__price b.is-sale{color:#e03a3a}
.study__car .carousel__nav{background:transparent;color:#a7a7a7;box-shadow:none;font-size:34px;top:40%}
.study__car .carousel__nav:hover{color:#5a3a22;background:transparent}
.study__car .carousel__prev{left:-18px}.study__car .carousel__next{right:-18px}
.study__car.is-grid .study__track{grid-auto-flow:row;grid-template-columns:repeat(5,minmax(0,1fr));grid-auto-columns:auto;overflow:visible}
.study__car.is-grid .carousel__nav{display:none}
.study__note{font-size:12.5px;color:#8a6d55;margin:16px 0 14px}
.study__more{display:inline-block;border:2px solid #e2b36f;color:#c08a45;font-weight:700;font-size:14px;padding:9px 26px;border-radius:24px;background:transparent;transition:.25s}
.study__more:hover{background:#e2b36f;color:#fff}
@media (max-width:1100px){.study__track{grid-auto-columns:calc((100% - 48px)/4)}.study__car.is-grid .study__track{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media (max-width:980px){.study__track{grid-auto-columns:calc((100% - 32px)/3)}.study__car.is-grid .study__track{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (max-width:600px){.study__box{padding:26px 12px 22px}.study__track{grid-auto-columns:calc((100% - 16px)/2)}.study__car.is-grid .study__track{grid-template-columns:repeat(2,minmax(0,1fr))}.scard h3{font-size:13px;min-height:84px}.study__orn span{width:50px}.study__car .carousel__prev{left:-10px}.study__car .carousel__next{right:-10px}}
@media (min-width:981px){.nav__list{flex-wrap:nowrap;justify-content:center}}

/* ================= DANH MỤC SẢN PHẨM ================= */
.shop-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:22px;align-items:start}
.catbar{background:#fff;border:1px solid var(--line);position:sticky;top:64px}
.catbar__head{width:100%;border:0;background:var(--navy);color:#fff;font-weight:700;font-size:15px;letter-spacing:.5px;text-align:left;padding:12px 14px;cursor:default;display:flex;justify-content:space-between;align-items:center;border-bottom:3px solid var(--gold)}
.catbar__caret{display:none}
.catbar__list{padding:4px 12px 8px}
.catbar__list li{border-bottom:1px solid var(--gray)}
.catbar__list li:last-child{border-bottom:0}
.catbar__list a{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:9px 4px 9px 14px;font-size:13px;text-transform:uppercase;color:#666;position:relative;transition:.2s}
.catbar__list a::before{content:"›";position:absolute;left:2px;color:var(--gold-d);font-weight:700}
.catbar__list a:hover,.catbar__list a.is-active{color:var(--navy);padding-left:18px;font-weight:700}
.catbar__list em{font-style:normal;font-size:11px;background:var(--gray);color:var(--navy);border-radius:10px;padding:1px 7px}
.catbar__list a.is-active em{background:var(--gold);color:#fff}
.shop-banner{display:grid;grid-template-columns:1fr 1.1fr;align-items:center;background:#fff;border:1px solid var(--line);padding:26px 30px;margin-bottom:24px;min-height:260px;position:relative;overflow:hidden}
.shop-banner::after{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;background:rgba(217,164,65,.08)}
.shop-banner__logo{display:grid;place-items:center}
.shop-banner__logo img{width:min(240px,90%)}
.shop-banner__brand{color:var(--navy);font-weight:800;font-size:clamp(20px,2.2vw,28px);letter-spacing:1px}
.shop-banner__big{color:var(--gold);font-weight:800;font-size:clamp(56px,7vw,92px);line-height:1;margin:2px 0 6px}
.shop-banner__line{font-size:20px;color:#555}
.shop-banner__sub{font-size:15px;color:var(--text);margin-bottom:14px}
.shop-banner__btn{display:inline-block;background:var(--navy);color:#fff;font-weight:700;padding:8px 18px;border-radius:3px;transition:.2s}
.shop-banner__btn:hover{background:var(--gold)}
.shop-main .products{grid-template-columns:repeat(4,minmax(0,1fr))}
.cat-empty{grid-column:1/-1;text-align:center;padding:30px 16px;background:var(--gray-2);border-radius:6px}
.cat-empty b{display:block;color:var(--navy);font-size:18px;margin-bottom:6px}
.cat-empty p{color:var(--muted);margin-bottom:14px}
#cat-result[hidden],#shop-default[hidden]{display:none}
@media (max-width:1100px){.shop-main .products{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (max-width:980px){
  .shop-layout{grid-template-columns:1fr}
  .catbar{position:static}
  .catbar__head{cursor:pointer}
  .catbar__caret{display:inline;transition:.2s}
  .catbar .catbar__list{display:none}
  .catbar.is-open .catbar__list{display:block}
  .catbar.is-open .catbar__caret{transform:rotate(180deg)}
  .shop-main .products{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:600px){
  .shop-banner{grid-template-columns:1fr;text-align:center;padding:20px;min-height:0}
  .shop-banner__logo img{width:110px}
}
@media (min-width:981px){.sub--cats{display:grid;grid-template-columns:1fr 1fr;min-width:480px}.sub--cats .sub__sep{grid-column:1/-1;border-top:2px solid var(--gold)}}
.sub__sep a{font-weight:700}
.product__name{color:var(--navy)}
.shop-main .product__foot{border-top:1px solid #c0392b00}

/* ================= 2 THẺ GỖ CÔNG NGHIỆP / GỖ TỰ NHIÊN ================= */
.wtabs{display:flex;justify-content:center;gap:0;margin:0 0 22px;border-bottom:3px solid var(--navy)}
.wtab{border:0;cursor:pointer;background:#3a3a3a;color:#fff;font-weight:700;font-size:14px;letter-spacing:.4px;padding:13px 26px;transition:.2s;border-radius:4px 4px 0 0;margin:0 3px}
.wtab:hover{background:#4a4a4a}
.wtab.is-active{background:var(--navy);box-shadow:inset 0 -3px 0 var(--gold)}
.wtab[data-w="tn"].is-active{background:#5a2d0c}
.wpanel[hidden]{display:none}
.wpanel .cat-result[hidden],.wpanel .shop-default[hidden]{display:none}
/* Gỗ tự nhiên – tông nâu theo mẫu */
.wpanel--tn .catbar__head{background:#5a2d0c;border-bottom-color:#c48a4a;font-size:16px;font-weight:600}
.wpanel--tn .catbar__list a::before{color:#5a2d0c}
.wpanel--tn .catbar__list a:hover,.wpanel--tn .catbar__list a.is-active{color:#5a2d0c}
.wpanel--tn .catbar__list a.is-active em{background:#5a2d0c}
.wpanel--tn .shop-box__head h3{color:#3d2a1e;font-weight:500}
.wpanel--tn .shop-box__head h3::after{background:#5a2d0c}
.wpanel--tn .product__name{color:#6d7f9b;font-weight:500;border-bottom-color:#5a2d0c}
.wpanel--tn .product__btn{background:#5a2d0c}
.wpanel--tn .product__btn:hover{background:#8a4a1c}
.wpanel--tn .product__price{font-weight:500;font-size:15px}
.wpanel--tn .shop-banner__brand{color:#5a2d0c}
.wpanel--tn .shop-banner__big{color:#8a4a1c}
.wpanel--tn .shop-banner__btn{background:#5a2d0c}
.wpanel--tn .shop-banner::after{background:rgba(90,45,12,.07)}
.see-more{font-size:13px;color:var(--text)}
.see-more span{color:var(--gold-d);font-weight:800;font-size:16px}
.wpanel--tn .see-more span{color:#5a2d0c}
/* menu 2 nhóm */


@media (max-width:600px){.wtab{font-size:12px;padding:11px 10px;flex:1}}
.product__price{white-space:nowrap}.shop-main .product__foot{gap:6px}.shop-main .product__price{font-size:15px}.shop-main .product__btn{padding:8px 10px}

.sub--cats2 .sub__head{font-weight:800;color:var(--gold-d)!important;font-size:12px;letter-spacing:.6px;text-transform:uppercase;background:var(--gray-2)}
.sub--cats2 .sub__col ul a{padding:7px 18px;font-size:13.5px}
@media (min-width:981px){.sub--cats2{display:flex;flex-wrap:wrap;min-width:500px}.sub--cats2 .sub__col{width:50%}.sub--cats2 .sub__col+.sub__col{border-left:1px solid var(--gray)}.sub--cats2 .sub__sep{width:100%;border-top:2px solid var(--gold)}}
@media (max-width:600px){.shop-banner{display:none}}