/* Styles from san-pham.html */
/* ── VARIABLES ── */
:root{
--navy:#0052A4;--navy-dark:#003875;--navy-light:#1a6bbf;
--black:#000;--white:#fff;--ivory:#F5F1EB;
--warm-grey:#D7D8D2;--gold:#D09B2C;--gold-light:#F3E8B3;
--text:#1a1a1a;--text-mid:#555;--text-light:#888;--border:#e8e8e8;
--font-head:'Helvetica Neue',Helvetica,Arial,sans-serif;
--font-body:'Helvetica Neue',Helvetica,Arial,sans-serif;
--max-w:1200px;--pad:clamp(16px,4vw,40px);
--sec-pad:clamp(56px,8vw,100px);
--ease:cubic-bezier(.25,.46,.45,.94);
}
.container{width:100%;max-width:var(--max-w);margin:0 auto;padding:0 var(--pad)}
/* ── TYPOGRAPHY ── */
.sec-label{font-family:var(--font-body);font-size:11px;font-weight:600;
letter-spacing:.2em;text-transform:uppercase;color:var(--gold);
margin-bottom:14px;display:flex;align-items:center;gap:10px}
.sec-label::before{content:'';width:28px;height:1px;background:var(--gold);flex-shrink:0}
.sec-title{font-family:var(--font-head);font-size:clamp(1.8rem,4vw,3.2rem);
font-weight:700;line-height:1.1;color:var(--navy-dark);margin-bottom:20px}
.sec-sub{font-size:clamp(.9rem,2vw,1rem);color:var(--text-mid);line-height:1.7;max-width:580px}
/* ── BUTTONS ── */
.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:10px;
background:var(--navy);color:var(--white)!important;font-family:var(--font-body);
font-weight:600;font-size:.9rem;letter-spacing:.05em;padding:14px 32px;
border-radius:2px;transition:all .25s var(--ease);border:2px solid var(--navy);
min-height:44px;white-space:nowrap}
.btn-primary:hover{background:var(--navy-dark);border-color:var(--navy-dark);transform:translateY(-1px)}
.btn-gold{display:inline-flex;align-items:center;justify-content:center;gap:10px;
background:var(--gold);color:var(--white)!important;font-family:var(--font-body);
font-weight:600;font-size:.9rem;letter-spacing:.05em;padding:14px 32px;
border-radius:2px;transition:all .25s var(--ease);min-height:44px;white-space:nowrap}
.btn-gold:hover{background:#b8841f;transform:translateY(-1px)}
.btn-outline{display:inline-flex;align-items:center;justify-content:center;gap:10px;
background:transparent;color:var(--white)!important;font-family:var(--font-body);
font-weight:500;font-size:.9rem;padding:13px 31px;border-radius:2px;
border:1.5px solid rgba(255,255,255,.5);transition:all .25s var(--ease);min-height:44px}
.btn-outline:hover{border-color:var(--white);background:rgba(255,255,255,.1)}
.btn-sm{padding:9px 18px;font-size:.8rem;min-height:38px}
/* ── NAVBAR ── */
.navbar{position:fixed;top:0;left:0;right:0;z-index:100;
background:rgba(255,255,255,.96);-webkit-backdrop-filter:blur(12px);
backdrop-filter:blur(12px);border-bottom:1px solid var(--border);
transition:box-shadow .3s}
.navbar.scrolled{box-shadow:0 2px 20px rgba(0,0,0,.06)}
.nav-inner{display:flex;align-items:center;height:80px;gap:clamp(16px,3vw,40px);
position:relative}
.nav-logo{display:flex;align-items:center;flex-shrink:0;line-height:0}
.nav-menu{display:flex;align-items:center;gap:clamp(16px,2.5vw,32px);flex:1}
.nav-menu a{font-size:.85rem;font-weight:500;color:var(--text-mid);letter-spacing:.03em;
transition:color .2s;position:relative;min-height:44px;display:flex;align-items:center}
.nav-menu a::after{content:'';position:absolute;bottom:6px;left:0;right:0;height:1.5px;
background:var(--navy);transform:scaleX(0);transform-origin:left;
transition:transform .25s var(--ease)}
.nav-menu a:hover{color:var(--navy)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-cta{margin-left:auto;flex-shrink:0}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;
width:44px;height:44px;cursor:pointer;padding:10px 8px;flex-shrink:0;margin-left:auto}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--navy);
border-radius:2px;transition:all .25s var(--ease);transform-origin:center}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;transform:scaleX(0)}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
.nav-mobile{display:none;position:absolute;top:80px;left:0;right:0;
background:var(--white);flex-direction:column;
border-bottom:1px solid var(--border);
box-shadow:0 8px 24px rgba(0,0,0,.08);z-index:99}
.nav-mobile.is-open{display:flex}
.nav-mobile a{font-size:1rem;font-weight:500;color:var(--text-mid);
padding:14px var(--pad);border-bottom:1px solid var(--border);
min-height:52px;display:flex;align-items:center}
.nav-mobile a:last-child{border-bottom:none}
.nav-mobile .nav-mobile-cta{background:var(--navy);color:var(--white)!important;
font-weight:600;justify-content:center;margin:12px var(--pad);border-radius:2px;
border-bottom:none!important;min-height:48px}
/* ── PAGE HERO ── */
.ddx-page-hero{background:var(--navy-dark);padding:120px 0 60px;position:relative;overflow:hidden}
.ddx-page-hero::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;
background:linear-gradient(135deg,rgba(0,56,117,.95) 0%,rgba(0,82,164,.8) 100%)}
.ddx-page-hero::after{content:'DDX';position:absolute;bottom:-20px;right:-10px;
font-family:var(--font-head);font-size:clamp(14vw,20vw,20vw);font-weight:700;
color:rgba(255,255,255,.03);line-height:1;pointer-events:none;user-select:none}
.ddx-page-hero-inner{position:relative;z-index:1}
.ddx-breadcrumb{display:flex;align-items:center;gap:8px;margin-bottom:16px}
.ddx-breadcrumb a,.ddx-breadcrumb span{font-size:.8rem;color:rgba(255,255,255,.5);letter-spacing:.05em}
.ddx-breadcrumb a:hover{color:rgba(255,255,255,.8)}
.ddx-breadcrumb-sep{color:rgba(255,255,255,.3);font-size:.75rem}
.ddx-page-hero-title{font-family:var(--font-head);font-size:clamp(2rem,5vw,3.8rem);
font-weight:700;color:var(--white);line-height:1.1;margin-bottom:12px}
.ddx-page-hero-sub{font-size:.95rem;color:rgba(255,255,255,.6);line-height:1.6;max-width:520px}
/* ── INTRO ── */
.ddx-intro-section{padding:var(--sec-pad) 0;background:var(--white)}
.ddx-intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,6vw,80px);align-items:center}
.ddx-intro-img{border-radius:2px;overflow:hidden;height:clamp(260px,35vw,420px)}
.ddx-intro-img img{width:100%;height:100%;object-fit:cover;object-position:center}
.ddx-intro-text p{font-size:.97rem;color:var(--text-mid);line-height:1.85;margin-bottom:16px}
.ddx-intro-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:28px}
.ddx-intro-stat{text-align:center;padding:16px 12px;background:var(--ivory);border-radius:2px}
.ddx-intro-stat-num{font-family:var(--font-head);font-size:1.8rem;font-weight:700;color:var(--navy);line-height:1}
.ddx-intro-stat-label{font-size:.72rem;color:var(--text-mid);letter-spacing:.06em;text-transform:uppercase;margin-top:4px}
/* ── PRODUCTS ── */
.ddx-products-section{padding:var(--sec-pad) 0}
.ddx-products-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:40px}
.ddx-product-card{border:1px solid var(--border);border-radius:2px;overflow:hidden;
background:var(--white);transition:box-shadow .3s var(--ease),transform .3s var(--ease);
display:flex;flex-direction:column}
.ddx-product-card:hover{box-shadow:0 8px 32px rgba(0,0,0,.10);transform:translateY(-3px)}
.ddx-product-img{height:220px;overflow:hidden;position:relative;background:var(--ivory)}
.ddx-product-img img{width:100%;height:100%;object-fit:cover;object-position:center top;
transition:transform .5s var(--ease)}
.ddx-product-card:hover .ddx-product-img img{transform:scale(1.04)}
.ddx-product-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.ddx-product-name{font-family:var(--font-head);font-size:1.2rem;font-weight:700;
color:var(--navy-dark);margin-bottom:8px;line-height:1.2}
.ddx-product-price{font-size:.95rem;font-weight:600;color:var(--gold);margin-bottom:12px}
.ddx-product-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.ddx-product-tag{font-size:.66rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
padding:3px 8px;background:rgba(0,82,164,.07);color:var(--navy);border-radius:2px}
.ddx-product-body .btn-primary{margin-top:auto;width:100%;justify-content:center;font-size:.82rem}
/* ── CTA SECTION ── */
.ddx-cta-section{padding:clamp(56px,8vw,100px) 0;background:var(--navy-dark);position:relative;overflow:hidden}
.ddx-cta-section::before{content:'';position:absolute;top:-40%;right:-10%;width:500px;height:500px;
border:1px solid rgba(255,255,255,.06);border-radius:50%}
.ddx-cta-section::after{content:'';position:absolute;top:-20%;right:-5%;width:320px;height:320px;
border:1px solid rgba(255,255,255,.06);border-radius:50%}
.ddx-cta-inner{text-align:center;position:relative;z-index:1}
.ddx-cta-title{font-family:var(--font-head);font-size:clamp(1.8rem,4vw,3.2rem);font-weight:700;
color:var(--white);margin-bottom:16px;line-height:1.1}
.ddx-cta-title em{color:var(--gold);font-style:normal}
.ddx-cta-desc{font-size:clamp(.88rem,1.5vw,1rem);color:rgba(255,255,255,.6);max-width:520px;
margin:0 auto 36px;line-height:1.7}
.ddx-cta-btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
/* ── FOOTER ── */
.footer{background:var(--black);padding:52px 0 24px}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:clamp(24px,4vw,48px);
padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand-desc{font-size:.8rem;color:rgba(255,255,255,.4);line-height:1.75;
margin:14px 0 18px}
.footer-col-title{font-size:.7rem;font-weight:600;letter-spacing:.14em;
text-transform:uppercase;color:var(--gold);margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:.83rem;color:rgba(255,255,255,.45);transition:color .2s;
min-height:32px;display:flex;align-items:center}
.footer-links a:hover{color:var(--white)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;
padding-top:20px;flex-wrap:wrap;gap:10px}
.footer-copy,.footer-legal{font-size:.74rem;color:rgba(255,255,255,.25)}
/* ── ANIMATIONS ── */
.fade-up{opacity:0;transform:translateY(28px);
transition:opacity .7s var(--ease),transform .7s var(--ease)}
.fade-up.visible{opacity:1;transform:translateY(0)}
.fade-up-d1{transition-delay:.08s}
.fade-up-d2{transition-delay:.16s}
.fade-up-d3{transition-delay:.24s}
/* ── RESPONSIVE ── */
@media(max-width:1023px){
.ddx-products-grid{grid-template-columns:repeat(2,1fr)}
.ddx-intro-grid{grid-template-columns:1fr;gap:32px}
.footer-top{grid-template-columns:1fr 1fr}
.nav-menu{display:none}
.nav-cta{display:none}
.nav-toggle{display:flex}
}
@media(max-width:767px){
.ddx-products-grid{grid-template-columns:1fr}
.ddx-intro-stats{grid-template-columns:repeat(3,1fr)}
.footer-top{grid-template-columns:1fr}
.footer-bottom{flex-direction:column;text-align:center}
.ddx-cta-btns{flex-direction:column;align-items:center}
.ddx-cta-btns a{width:100%;max-width:320px}
}
@media(prefers-reduced-motion:reduce){
.fade-up{opacity:1;transform:none}
*{animation:none!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}
/* ── MEGA MENU ── */
.nav-item{position:relative;display:flex;align-items:center}
.has-mega{font-size:.85rem;font-weight:500;color:var(--text-mid);letter-spacing:.03em;
background:none;border:none;cursor:pointer;display:flex;align-items:center;gap:5px;
padding:0;font-family:inherit;min-height:44px;transition:color .2s}
.has-mega:hover{color:var(--navy)}
.has-mega .mega-chevron{transition:transform .25s var(--ease)}
.nav-item:hover .has-mega .mega-chevron{transform:rotate(180deg)}
.mega-menu{
position:absolute;top:100%;left:-20px;
width:560px;background:var(--white);
border:1px solid var(--border);border-top:2px solid var(--navy);
border-radius:0 0 4px 4px;
box-shadow:0 12px 40px rgba(0,0,0,.12);
padding:28px 24px 24px;
display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
opacity:0;visibility:hidden;transform:translateY(8px);
transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
z-index:200;pointer-events:none}
.nav-item:hover .mega-menu{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto}
.mega-col-icon{width:32px;height:32px;background:var(--ivory);border-radius:50%;
display:flex;align-items:center;justify-content:center;margin-bottom:10px}
.mega-col-title{font-size:.68rem;font-weight:700;letter-spacing:.12em;
color:var(--navy);text-transform:uppercase;
padding-bottom:8px;margin-bottom:8px;border-bottom:1px solid var(--border)}
.mega-link{display:block;font-size:.82rem;color:var(--text-mid);
padding:4px 0;text-decoration:none;transition:color .15s,padding-left .15s;line-height:1.5}
.mega-link:hover{color:var(--navy);padding-left:4px}
/* Mobile accordion */
.nav-mobile-group{border-bottom:1px solid var(--border)}
.nav-mobile-parent{width:100%;text-align:left;font-size:1rem;font-weight:500;
color:var(--text-mid);padding:14px var(--pad);display:flex;justify-content:space-between;
align-items:center;background:none;border:none;cursor:pointer;font-family:inherit;
min-height:52px}
.nav-mobile-parent .mega-chevron{flex-shrink:0;transition:transform .25s}
.nav-mobile-group.open .nav-mobile-parent .mega-chevron{transform:rotate(180deg)}
.nav-mobile-sub{display:none;background:var(--ivory)}
.nav-mobile-group.open .nav-mobile-sub{display:block}
.nav-mobile-sub a{font-size:.9rem;color:var(--text-mid);
padding:10px var(--pad) 10px calc(var(--pad) + 20px);
display:flex;align-items:center;gap:8px;border-bottom:1px solid var(--border);
min-height:44px;text-decoration:none}
.nav-mobile-sub a::before{content:'';width:4px;height:4px;background:var(--gold);
border-radius:50%;flex-shrink:0}
/* ── HEADING LIGHT WEIGHT ── */
.sec-title,.ddx-hero-h1,.ddx-cta-title,.ddx-news-card-title,
.ddx-article-h1,.ddx-page-hero-title,.page-title,
.ddx-hero-bg-text{font-weight:300!important;letter-spacing:-.01em}
.ddx-hero-h1{letter-spacing:-.02em}
/* Styles from tin-tuc.html */
/* ── VARIABLES ── */
:root{
--navy:#0052A4;--navy-dark:#003875;--navy-light:#1a6bbf;
--black:#000;--white:#fff;--ivory:#F5F1EB;
--warm-grey:#D7D8D2;--gold:#D09B2C;--gold-light:#F3E8B3;
--text:#1a1a1a;--text-mid:#555;--text-light:#888;--border:#e8e8e8;
--font-head:'Helvetica Neue',Helvetica,Arial,sans-serif;
--font-body:'Helvetica Neue',Helvetica,Arial,sans-serif;
--max-w:1200px;--pad:clamp(16px,4vw,40px);
--sec-pad:clamp(56px,8vw,100px);
--ease:cubic-bezier(.25,.46,.45,.94);
}
.container{width:100%;max-width:var(--max-w);margin:0 auto;padding:0 var(--pad)}
/* ── TYPOGRAPHY ── */
.sec-label{font-family:var(--font-body);font-size:11px;font-weight:600;
letter-spacing:.2em;text-transform:uppercase;color:var(--gold);
margin-bottom:14px;display:flex;align-items:center;gap:10px}
.sec-label::before{content:'';width:28px;height:1px;background:var(--gold);flex-shrink:0}
.sec-title{font-family:var(--font-head);font-size:clamp(1.8rem,4vw,3.2rem);
font-weight:700;line-height:1.1;color:var(--navy-dark);margin-bottom:20px}
.sec-sub{font-size:clamp(.9rem,2vw,1rem);color:var(--text-mid);line-height:1.7;max-width:580px}
/* ── BUTTONS ── */
.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:10px;
background:var(--navy);color:var(--white)!important;font-family:var(--font-body);
font-weight:600;font-size:.9rem;letter-spacing:.05em;padding:14px 32px;
border-radius:2px;transition:all .25s var(--ease);border:2px solid var(--navy);
min-height:44px;white-space:nowrap}
.btn-primary:hover{background:var(--navy-dark);border-color:var(--navy-dark);transform:translateY(-1px)}
.btn-gold{display:inline-flex;align-items:center;justify-content:center;gap:10px;
background:var(--gold);color:var(--white)!important;font-family:var(--font-body);
font-weight:600;font-size:.9rem;letter-spacing:.05em;padding:14px 32px;
border-radius:2px;transition:all .25s var(--ease);min-height:44px;white-space:nowrap}
.btn-gold:hover{background:#b8841f;transform:translateY(-1px)}
.btn-outline{display:inline-flex;align-items:center;justify-content:center;gap:10px;
background:transparent;color:var(--white)!important;font-family:var(--font-body);
font-weight:500;font-size:.9rem;padding:13px 31px;border-radius:2px;
border:1.5px solid rgba(255,255,255,.5);transition:all .25s var(--ease);min-height:44px}
.btn-outline:hover{border-color:var(--white);background:rgba(255,255,255,.1)}
/* ── NAVBAR ── */
.navbar{position:fixed;top:0;left:0;right:0;z-index:100;
background:rgba(255,255,255,.96);-webkit-backdrop-filter:blur(12px);
backdrop-filter:blur(12px);border-bottom:1px solid var(--border);
transition:box-shadow .3s}
.navbar.scrolled{box-shadow:0 2px 20px rgba(0,0,0,.06)}
.nav-inner{display:flex;align-items:center;height:80px;gap:clamp(16px,3vw,40px);
position:relative}
.nav-logo{display:flex;align-items:center;flex-shrink:0;line-height:0}
.nav-menu{display:flex;align-items:center;gap:clamp(16px,2.5vw,32px);flex:1}
.nav-menu a{font-size:.85rem;font-weight:500;color:var(--text-mid);letter-spacing:.03em;
transition:color .2s;position:relative;min-height:44px;display:flex;align-items:center}
.nav-menu a::after{content:'';position:absolute;bottom:6px;left:0;right:0;height:1.5px;
background:var(--navy);transform:scaleX(0);transform-origin:left;
transition:transform .25s var(--ease)}
.nav-menu a:hover{color:var(--navy)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.active{color:var(--navy)}
.nav-menu a.active::after{transform:scaleX(1)}
.nav-cta{margin-left:auto;flex-shrink:0}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;
width:44px;height:44px;cursor:pointer;padding:10px 8px;flex-shrink:0;margin-left:auto}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--navy);
border-radius:2px;transition:all .25s var(--ease);transform-origin:center}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;transform:scaleX(0)}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
.nav-mobile{display:none;position:absolute;top:80px;left:0;right:0;
background:var(--white);flex-direction:column;
border-bottom:1px solid var(--border);
box-shadow:0 8px 24px rgba(0,0,0,.08);z-index:99}
.nav-mobile.is-open{display:flex}
.nav-mobile a{font-size:1rem;font-weight:500;color:var(--text-mid);
padding:14px var(--pad);border-bottom:1px solid var(--border);
min-height:52px;display:flex;align-items:center}
.nav-mobile a:last-child{border-bottom:none}
.nav-mobile .nav-mobile-cta{background:var(--navy);color:var(--white)!important;
font-weight:600;justify-content:center;margin:12px var(--pad);border-radius:2px;
border-bottom:none!important;min-height:48px}
/* ── PAGE HERO ── */
.ddx-page-hero{background:var(--navy-dark);padding:120px 0 60px;position:relative;overflow:hidden}
.ddx-page-hero::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;
background:linear-gradient(135deg,rgba(0,56,117,.95) 0%,rgba(0,82,164,.8) 100%)}
.ddx-page-hero::after{content:'TIN TỨC';position:absolute;bottom:-20px;right:-10px;
font-family:var(--font-head);font-size:clamp(10vw,15vw,15vw);font-weight:700;
color:rgba(255,255,255,.03);line-height:1;pointer-events:none;user-select:none}
.ddx-page-hero-inner{position:relative;z-index:1}
.ddx-breadcrumb{display:flex;align-items:center;gap:8px;margin-bottom:16px}
.ddx-breadcrumb a,.ddx-breadcrumb span{font-size:.8rem;color:rgba(255,255,255,.5);letter-spacing:.05em}
.ddx-breadcrumb a:hover{color:rgba(255,255,255,.8)}
.ddx-breadcrumb-sep{color:rgba(255,255,255,.3);font-size:.75rem}
.ddx-page-hero-title{font-family:var(--font-head);font-size:clamp(2rem,5vw,3.8rem);
font-weight:700;color:var(--white);line-height:1.1;margin-bottom:12px}
.ddx-page-hero-sub{font-size:.95rem;color:rgba(255,255,255,.6);line-height:1.6;max-width:480px}
/* ── NEWS GRID ── */
.ddx-news-section{padding:var(--sec-pad) 0}
.ddx-news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-bottom:48px}
.ddx-news-card{border:1px solid var(--border);border-radius:2px;overflow:hidden;
transition:box-shadow .3s var(--ease),transform .3s var(--ease);background:var(--white)}
.ddx-news-card:hover{box-shadow:0 8px 32px rgba(0,0,0,.10);transform:translateY(-3px)}
.ddx-news-card-img{height:220px;overflow:hidden;position:relative;display:block}
.ddx-news-card-img img{width:100%;height:100%;object-fit:cover;object-position:center;
transition:transform .5s var(--ease)}
.ddx-news-card:hover .ddx-news-card-img img{transform:scale(1.04)}
.ddx-news-card-body{padding:22px 24px 24px}
.ddx-news-card-meta{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.ddx-news-card-tag{font-size:.66rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
color:var(--white);background:var(--navy);padding:3px 9px;border-radius:2px}
.ddx-news-card-tag.tag-event{background:var(--gold)}
.ddx-news-card-tag.tag-partner{background:var(--navy-light)}
.ddx-news-card-tag.tag-export{background:var(--navy-dark)}
.ddx-news-card-tag.tag-news{background:var(--navy)}
.ddx-news-card-date{font-size:.75rem;color:var(--text-light)}
.ddx-news-card-title{font-family:var(--font-head);font-size:1.15rem;font-weight:700;
color:var(--navy-dark);line-height:1.3;margin-bottom:10px}
.ddx-news-card-excerpt{font-size:.84rem;color:var(--text-mid);line-height:1.65;margin-bottom:18px}
.ddx-news-card-link{display:inline-flex;align-items:center;gap:6px;font-size:.8rem;
font-weight:600;color:var(--navy);letter-spacing:.05em;transition:gap .2s}
.ddx-news-card-link::after{content:'→'}
.ddx-news-card:hover .ddx-news-card-link{gap:10px}
/* ── LOAD MORE ── */
.ddx-load-more-wrap{text-align:center;padding:0 0 20px}
/* ── FOOTER ── */
.footer{background:var(--black);padding:52px 0 24px}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:clamp(24px,4vw,48px);
padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand-desc{font-size:.8rem;color:rgba(255,255,255,.4);line-height:1.75;
margin:14px 0 18px}
.footer-col-title{font-size:.7rem;font-weight:600;letter-spacing:.14em;
text-transform:uppercase;color:var(--gold);margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:.83rem;color:rgba(255,255,255,.45);transition:color .2s;
min-height:32px;display:flex;align-items:center}
.footer-links a:hover{color:var(--white)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;
padding-top:20px;flex-wrap:wrap;gap:10px}
.footer-copy,.footer-legal{font-size:.74rem;color:rgba(255,255,255,.25)}
/* ── ANIMATIONS ── */
.fade-up{opacity:0;transform:translateY(28px);
transition:opacity .7s var(--ease),transform .7s var(--ease)}
.fade-up.visible{opacity:1;transform:translateY(0)}
.fade-up-d1{transition-delay:.08s}
.fade-up-d2{transition-delay:.16s}
.fade-up-d3{transition-delay:.24s}
/* ── RESPONSIVE ── */
@media(max-width:1023px){
.ddx-news-grid{grid-template-columns:repeat(2,1fr)}
.footer-top{grid-template-columns:1fr 1fr}
.nav-menu{display:none}
.nav-cta{display:none}
.nav-toggle{display:flex}
}
@media(max-width:767px){
.ddx-news-grid{grid-template-columns:1fr}
.footer-top{grid-template-columns:1fr}
.footer-bottom{flex-direction:column;text-align:center}
}
@media(prefers-reduced-motion:reduce){
.fade-up{opacity:1;transform:none}
*{animation:none!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}
/* ── MEGA MENU ── */
.nav-item{position:relative;display:flex;align-items:center}
.has-mega{font-size:.85rem;font-weight:500;color:var(--text-mid);letter-spacing:.03em;
background:none;border:none;cursor:pointer;display:flex;align-items:center;gap:5px;
padding:0;font-family:inherit;min-height:44px;transition:color .2s}
.has-mega:hover{color:var(--navy)}
.has-mega .mega-chevron{transition:transform .25s var(--ease)}
.nav-item:hover .has-mega .mega-chevron{transform:rotate(180deg)}
.mega-menu{
position:absolute;top:100%;left:-20px;
width:560px;background:var(--white);
border:1px solid var(--border);border-top:2px solid var(--navy);
border-radius:0 0 4px 4px;
box-shadow:0 12px 40px rgba(0,0,0,.12);
padding:28px 24px 24px;
display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
opacity:0;visibility:hidden;transform:translateY(8px);
transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
z-index:200;pointer-events:none}
.nav-item:hover .mega-menu{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto}
.mega-col-icon{width:32px;height:32px;background:var(--ivory);border-radius:50%;
display:flex;align-items:center;justify-content:center;margin-bottom:10px}
.mega-col-title{font-size:.68rem;font-weight:700;letter-spacing:.12em;
color:var(--navy);text-transform:uppercase;
padding-bottom:8px;margin-bottom:8px;border-bottom:1px solid var(--border)}
.mega-link{display:block;font-size:.82rem;color:var(--text-mid);
padding:4px 0;text-decoration:none;transition:color .15s,padding-left .15s;line-height:1.5}
.mega-link:hover{color:var(--navy);padding-left:4px}
/* Mobile accordion */
.nav-mobile-group{border-bottom:1px solid var(--border)}
.nav-mobile-parent{width:100%;text-align:left;font-size:1rem;font-weight:500;
color:var(--text-mid);padding:14px var(--pad);display:flex;justify-content:space-between;
align-items:center;background:none;border:none;cursor:pointer;font-family:inherit;
min-height:52px}
.nav-mobile-parent .mega-chevron{flex-shrink:0;transition:transform .25s}
.nav-mobile-group.open .nav-mobile-parent .mega-chevron{transform:rotate(180deg)}
.nav-mobile-sub{display:none;background:var(--ivory)}
.nav-mobile-group.open .nav-mobile-sub{display:block}
.nav-mobile-sub a{font-size:.9rem;color:var(--text-mid);
padding:10px var(--pad) 10px calc(var(--pad) + 20px);
display:flex;align-items:center;gap:8px;border-bottom:1px solid var(--border);
min-height:44px;text-decoration:none}
.nav-mobile-sub a::before{content:'';width:4px;height:4px;background:var(--gold);
border-radius:50%;flex-shrink:0}
/* ── HEADING LIGHT WEIGHT ── */
.sec-title,.ddx-hero-h1,.ddx-cta-title,.ddx-news-card-title,
.ddx-article-h1,.ddx-page-hero-title,.page-title,
.ddx-hero-bg-text{font-weight:300!important;letter-spacing:-.01em}
.ddx-hero-h1{letter-spacing:-.02em}
/* Styles from bai-viet.html */
/* ── VARIABLES ── */
:root{
--navy:#0052A4;--navy-dark:#003875;--navy-light:#1a6bbf;
--black:#000;--white:#fff;--ivory:#F5F1EB;
--warm-grey:#D7D8D2;--gold:#D09B2C;--gold-light:#F3E8B3;
--text:#1a1a1a;--text-mid:#555;--text-light:#888;--border:#e8e8e8;
--font-head:'Helvetica Neue',Helvetica,Arial,sans-serif;
--font-body:'Helvetica Neue',Helvetica,Arial,sans-serif;
--max-w:1200px;--pad:clamp(16px,4vw,40px);
--sec-pad:clamp(56px,8vw,100px);
--ease:cubic-bezier(.25,.46,.45,.94);
}
.container{width:100%;max-width:var(--max-w);margin:0 auto;padding:0 var(--pad)}
/* ── TYPOGRAPHY ── */
.sec-label{font-family:var(--font-body);font-size:11px;font-weight:600;
letter-spacing:.2em;text-transform:uppercase;color:var(--gold);
margin-bottom:14px;display:flex;align-items:center;gap:10px}
.sec-label::before{content:'';width:28px;height:1px;background:var(--gold);flex-shrink:0}
.sec-title{font-family:var(--font-head);font-size:clamp(1.8rem,4vw,3.2rem);
font-weight:700;line-height:1.1;color:var(--navy-dark);margin-bottom:20px}
.sec-sub{font-size:clamp(.9rem,2vw,1rem);color:var(--text-mid);line-height:1.7;max-width:580px}
/* ── BUTTONS ── */
.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:10px;
background:var(--navy);color:var(--white)!important;font-family:var(--font-body);
font-weight:600;font-size:.9rem;letter-spacing:.05em;padding:14px 32px;
border-radius:2px;transition:all .25s var(--ease);border:2px solid var(--navy);
min-height:44px;white-space:nowrap}
.btn-primary:hover{background:var(--navy-dark);border-color:var(--navy-dark);transform:translateY(-1px)}
.btn-gold{display:inline-flex;align-items:center;justify-content:center;gap:10px;
background:var(--gold);color:var(--white)!important;font-family:var(--font-body);
font-weight:600;font-size:.9rem;letter-spacing:.05em;padding:14px 32px;
border-radius:2px;transition:all .25s var(--ease);min-height:44px;white-space:nowrap}
.btn-gold:hover{background:#b8841f;transform:translateY(-1px)}
.btn-outline{display:inline-flex;align-items:center;justify-content:center;gap:10px;
background:transparent;color:var(--white)!important;font-family:var(--font-body);
font-weight:500;font-size:.9rem;padding:13px 31px;border-radius:2px;
border:1.5px solid rgba(255,255,255,.5);transition:all .25s var(--ease);min-height:44px}
.btn-outline:hover{border-color:var(--white);background:rgba(255,255,255,.1)}
/* ── NAVBAR ── */
.navbar{position:fixed;top:0;left:0;right:0;z-index:100;
background:rgba(255,255,255,.96);-webkit-backdrop-filter:blur(12px);
backdrop-filter:blur(12px);border-bottom:1px solid var(--border);
transition:box-shadow .3s}
.navbar.scrolled{box-shadow:0 2px 20px rgba(0,0,0,.06)}
.nav-inner{display:flex;align-items:center;height:80px;gap:clamp(16px,3vw,40px);
position:relative}
.nav-logo{display:flex;align-items:center;flex-shrink:0;line-height:0}
.nav-menu{display:flex;align-items:center;gap:clamp(16px,2.5vw,32px);flex:1}
.nav-menu a{font-size:.85rem;font-weight:500;color:var(--text-mid);letter-spacing:.03em;
transition:color .2s;position:relative;min-height:44px;display:flex;align-items:center}
.nav-menu a::after{content:'';position:absolute;bottom:6px;left:0;right:0;height:1.5px;
background:var(--navy);transform:scaleX(0);transform-origin:left;
transition:transform .25s var(--ease)}
.nav-menu a:hover{color:var(--navy)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.active{color:var(--navy)}
.nav-menu a.active::after{transform:scaleX(1)}
.nav-cta{margin-left:auto;flex-shrink:0}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;
width:44px;height:44px;cursor:pointer;padding:10px 8px;flex-shrink:0;margin-left:auto}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--navy);
border-radius:2px;transition:all .25s var(--ease);transform-origin:center}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;transform:scaleX(0)}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
.nav-mobile{display:none;position:absolute;top:80px;left:0;right:0;
background:var(--white);flex-direction:column;
border-bottom:1px solid var(--border);
box-shadow:0 8px 24px rgba(0,0,0,.08);z-index:99}
.nav-mobile.is-open{display:flex}
.nav-mobile a{font-size:1rem;font-weight:500;color:var(--text-mid);
padding:14px var(--pad);border-bottom:1px solid var(--border);
min-height:52px;display:flex;align-items:center}
.nav-mobile a:last-child{border-bottom:none}
.nav-mobile .nav-mobile-cta{background:var(--navy);color:var(--white)!important;
font-weight:600;justify-content:center;margin:12px var(--pad);border-radius:2px;
border-bottom:none!important;min-height:48px}
/* ── ARTICLE HERO ── */
.ddx-article-hero{padding-top:80px;position:relative;height:480px;overflow:hidden}
.ddx-article-hero-img{width:100%;height:100%;object-fit:cover;object-position:center}
.ddx-article-hero-overlay{position:absolute;inset:0;background:linear-gradient(to bottom,rgba(0,0,0,.15) 0%,rgba(0,0,0,.65) 100%)}
.ddx-article-hero-meta{position:absolute;bottom:40px;left:0;right:0}
.ddx-article-hero-meta .container{display:flex;align-items:center;gap:14px}
.ddx-art-tag{font-size:.66rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
color:var(--white);background:var(--gold);padding:4px 10px;border-radius:2px}
.ddx-art-date{font-size:.8rem;color:rgba(255,255,255,.75)}
/* ── ARTICLE LAYOUT ── */
.ddx-article-layout{padding:56px 0 80px}
.ddx-article-inner{display:grid;grid-template-columns:1fr 340px;gap:56px;align-items:flex-start}
/* ── ARTICLE CONTENT ── */
.ddx-article-content{}
.ddx-article-h1{font-family:var(--font-head);font-size:clamp(1.8rem,3.5vw,2.8rem);
font-weight:700;line-height:1.15;color:var(--navy-dark);margin-bottom:20px}
.ddx-article-byline{display:flex;align-items:center;gap:18px;padding-bottom:20px;
border-bottom:1px solid var(--border);margin-bottom:24px;flex-wrap:wrap}
.ddx-byline-author{display:flex;align-items:center;gap:8px}
.ddx-byline-avatar{width:36px;height:36px;background:var(--navy);border-radius:50%;
display:flex;align-items:center;justify-content:center;flex-shrink:0}
.ddx-byline-avatar svg{color:var(--white)}
.ddx-byline-name{font-size:.84rem;font-weight:600;color:var(--text)}
.ddx-byline-date{font-size:.78rem;color:var(--text-light)}
.ddx-byline-cat{font-size:.72rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;
color:var(--navy);background:rgba(0,82,164,.08);padding:3px 10px;border-radius:2px}
/* Share buttons */
.ddx-share-bar{display:flex;align-items:center;gap:10px;margin-bottom:28px;flex-wrap:wrap}
.ddx-share-label{font-size:.8rem;font-weight:600;color:var(--text-mid);text-transform:uppercase;
letter-spacing:.08em}
.ddx-share-btn{display:inline-flex;align-items:center;gap:7px;padding:7px 14px;
border-radius:2px;font-size:.78rem;font-weight:600;border:1.5px solid var(--border);
color:var(--text-mid);transition:all .2s;cursor:pointer;background:var(--white)}
.ddx-share-btn:hover{border-color:var(--navy);color:var(--navy)}
.ddx-share-btn.fb:hover{border-color:#1877f2;color:#1877f2}
.ddx-share-btn.zalo:hover{border-color:#0068ff;color:#0068ff}
/* Article body typography */
.ddx-article-body p{font-size:.97rem;line-height:1.85;color:var(--text-mid);margin-bottom:20px}
.ddx-article-body h2{font-family:var(--font-head);font-size:clamp(1.3rem,2.5vw,1.8rem);
font-weight:700;color:var(--navy-dark);margin:36px 0 14px;line-height:1.2}
.ddx-article-body h3{font-family:var(--font-head);font-size:1.2rem;font-weight:700;
color:var(--navy-dark);margin:24px 0 10px}
.ddx-article-img-wrap{margin:28px 0;border-radius:2px;overflow:hidden}
.ddx-article-img-wrap img{width:100%;height:320px;object-fit:cover;object-position:center}
.ddx-article-caption{font-size:.78rem;color:var(--text-light);padding:8px 0 0;
font-style:italic;line-height:1.5}
.ddx-article-blockquote{border-left:4px solid var(--gold);padding:20px 24px;
background:var(--ivory);margin:28px 0;border-radius:0 2px 2px 0}
.ddx-article-blockquote p{font-family:var(--font-head);font-size:clamp(1.1rem,2vw,1.35rem);
font-style:italic;color:var(--navy-dark);line-height:1.6;margin-bottom:8px!important}
.ddx-article-blockquote cite{font-size:.8rem;color:var(--text-light);font-style:normal;
font-weight:600}
.ddx-article-list{margin:16px 0 20px 0;display:flex;flex-direction:column;gap:10px}
.ddx-article-list li{display:flex;gap:12px;align-items:flex-start;font-size:.95rem;
color:var(--text-mid);line-height:1.7}
.ddx-article-list li::before{content:'';width:6px;height:6px;min-width:6px;border-radius:50%;
background:var(--gold);margin-top:9px;flex-shrink:0}
/* ── SIDEBAR ── */
.ddx-article-sidebar{}
.ddx-sidebar-box{border:1px solid var(--border);border-radius:2px;overflow:hidden;margin-bottom:28px}
.ddx-sidebar-box-header{background:var(--navy);padding:16px 20px}
.ddx-sidebar-box-title{font-size:.78rem;font-weight:700;letter-spacing:.12em;
text-transform:uppercase;color:var(--white)}
.sidebar-box-
.ddx-sidebar-contact-phone{font-family:var(--font-head);font-size:1.8rem;font-weight:700;
color:var(--navy);margin-bottom:6px;line-height:1}
.ddx-sidebar-contact-label{font-size:.8rem;color:var(--text-mid);margin-bottom:16px}
.ddx-sidebar-related-list{display:flex;flex-direction:column;gap:16px}
.ddx-sidebar-related-item{display:grid;grid-template-columns:72px 1fr;gap:12px;align-items:center}
.ddx-sidebar-related-img{width:72px;height:56px;object-fit:cover;border-radius:2px;flex-shrink:0}
.ddx-sidebar-related-title{font-size:.82rem;font-weight:600;color:var(--navy-dark);
line-height:1.35;transition:color .2s}
.ddx-sidebar-related-item:hover .ddx-sidebar-related-title{color:var(--navy)}
.ddx-sidebar-related-date{font-size:.72rem;color:var(--text-light);margin-top:3px}
.ddx-sidebar-tags{display:flex;flex-wrap:wrap;gap:8px}
.ddx-sidebar-tag{font-size:.72rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
padding:5px 12px;border:1.5px solid var(--border);color:var(--text-mid);
border-radius:2px;transition:all .2s;cursor:pointer}
.ddx-sidebar-tag:hover{border-color:var(--navy);color:var(--navy)}
/* ── RELATED ARTICLES SECTION ── */
.ddx-related-section{padding:var(--sec-pad) 0;background:var(--ivory)}
.ddx-related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:36px}
.ddx-news-card{border:1px solid var(--border);border-radius:2px;overflow:hidden;
transition:box-shadow .3s var(--ease),transform .3s var(--ease);background:var(--white)}
.ddx-news-card:hover{box-shadow:0 8px 32px rgba(0,0,0,.10);transform:translateY(-3px)}
.ddx-news-card-img{height:190px;overflow:hidden;position:relative}
.ddx-news-card-img img{width:100%;height:100%;object-fit:cover;object-position:center;
transition:transform .5s var(--ease)}
.ddx-news-card:hover .ddx-news-card-img img{transform:scale(1.04)}
.news-card-
.ddx-news-card-meta{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.ddx-news-card-tag{font-size:.66rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
color:var(--white);background:var(--navy);padding:3px 9px;border-radius:2px}
.ddx-news-card-tag.tag-event{background:var(--gold)}
.ddx-news-card-tag.tag-partner{background:var(--navy-light)}
.ddx-news-card-tag.tag-export{background:var(--navy-dark)}
.ddx-news-card-date{font-size:.75rem;color:var(--text-light)}
.ddx-news-card-title{font-family:var(--font-head);font-size:1.05rem;font-weight:700;
color:var(--navy-dark);line-height:1.3;margin-bottom:10px}
.ddx-news-card-link{display:inline-flex;align-items:center;gap:6px;font-size:.8rem;
font-weight:600;color:var(--navy);letter-spacing:.05em;transition:gap .2s}
.ddx-news-card-link::after{content:'→'}
.ddx-news-card:hover .ddx-news-card-link{gap:10px}
/* ── FOOTER ── */
.footer{background:var(--black);padding:52px 0 24px}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:clamp(24px,4vw,48px);
padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand-desc{font-size:.8rem;color:rgba(255,255,255,.4);line-height:1.75;
margin:14px 0 18px}
.footer-col-title{font-size:.7rem;font-weight:600;letter-spacing:.14em;
text-transform:uppercase;color:var(--gold);margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:.83rem;color:rgba(255,255,255,.45);transition:color .2s;
min-height:32px;display:flex;align-items:center}
.footer-links a:hover{color:var(--white)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;
padding-top:20px;flex-wrap:wrap;gap:10px}
.footer-copy,.footer-legal{font-size:.74rem;color:rgba(255,255,255,.25)}
/* ── ANIMATIONS ── */
.fade-up{opacity:0;transform:translateY(28px);
transition:opacity .7s var(--ease),transform .7s var(--ease)}
.fade-up.visible{opacity:1;transform:translateY(0)}
/* ── RESPONSIVE ── */
@media(max-width:1023px){
.ddx-article-inner{grid-template-columns:1fr;gap:36px}
.ddx-article-sidebar{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.ddx-related-grid{grid-template-columns:1fr 1fr}
.footer-top{grid-template-columns:1fr 1fr}
.nav-menu{display:none}
.nav-cta{display:none}
.nav-toggle{display:flex}
}
@media(max-width:767px){
.ddx-article-hero{height:320px}
.ddx-article-sidebar{grid-template-columns:1fr}
.ddx-related-grid{grid-template-columns:1fr}
.footer-top{grid-template-columns:1fr}
.footer-bottom{flex-direction:column;text-align:center}
}
@media(prefers-reduced-motion:reduce){
.fade-up{opacity:1;transform:none}
*{animation:none!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}
/* ── MEGA MENU ── */
.nav-item{position:relative;display:flex;align-items:center}
.has-mega{font-size:.85rem;font-weight:500;color:var(--text-mid);letter-spacing:.03em;
background:none;border:none;cursor:pointer;display:flex;align-items:center;gap:5px;
padding:0;font-family:inherit;min-height:44px;transition:color .2s}
.has-mega:hover{color:var(--navy)}
.has-mega .mega-chevron{transition:transform .25s var(--ease)}
.nav-item:hover .has-mega .mega-chevron{transform:rotate(180deg)}
.mega-menu{
position:absolute;top:100%;left:-20px;
width:560px;background:var(--white);
border:1px solid var(--border);border-top:2px solid var(--navy);
border-radius:0 0 4px 4px;
box-shadow:0 12px 40px rgba(0,0,0,.12);
padding:28px 24px 24px;
display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
opacity:0;visibility:hidden;transform:translateY(8px);
transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
z-index:200;pointer-events:none}
.nav-item:hover .mega-menu{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto}
.mega-col-icon{width:32px;height:32px;background:var(--ivory);border-radius:50%;
display:flex;align-items:center;justify-content:center;margin-bottom:10px}
.mega-col-title{font-size:.68rem;font-weight:700;letter-spacing:.12em;
color:var(--navy);text-transform:uppercase;
padding-bottom:8px;margin-bottom:8px;border-bottom:1px solid var(--border)}
.mega-link{display:block;font-size:.82rem;color:var(--text-mid);
padding:4px 0;text-decoration:none;transition:color .15s,padding-left .15s;line-height:1.5}
.mega-link:hover{color:var(--navy);padding-left:4px}
/* Mobile accordion */
.nav-mobile-group{border-bottom:1px solid var(--border)}
.nav-mobile-parent{width:100%;text-align:left;font-size:1rem;font-weight:500;
color:var(--text-mid);padding:14px var(--pad);display:flex;justify-content:space-between;
align-items:center;background:none;border:none;cursor:pointer;font-family:inherit;
min-height:52px}
.nav-mobile-parent .mega-chevron{flex-shrink:0;transition:transform .25s}
.nav-mobile-group.open .nav-mobile-parent .mega-chevron{transform:rotate(180deg)}
.nav-mobile-sub{display:none;background:var(--ivory)}
.nav-mobile-group.open .nav-mobile-sub{display:block}
.nav-mobile-sub a{font-size:.9rem;color:var(--text-mid);
padding:10px var(--pad) 10px calc(var(--pad) + 20px);
display:flex;align-items:center;gap:8px;border-bottom:1px solid var(--border);
min-height:44px;text-decoration:none}
.nav-mobile-sub a::before{content:'';width:4px;height:4px;background:var(--gold);
border-radius:50%;flex-shrink:0}
/* ── HEADING LIGHT WEIGHT ── */
.sec-title,.ddx-hero-h1,.ddx-cta-title,.ddx-news-card-title,
.ddx-article-h1,.ddx-page-hero-title,.page-title,
.ddx-hero-bg-text{font-weight:300!important;letter-spacing:-.01em}
.ddx-hero-h1{letter-spacing:-.02em}
/* Styles from lien-he.html */
/* ── VARIABLES ── */
:root{
--navy:#0052A4;--navy-dark:#003875;--navy-light:#1a6bbf;
--black:#000;--white:#fff;--ivory:#F5F1EB;
--warm-grey:#D7D8D2;--gold:#D09B2C;--gold-light:#F3E8B3;
--text:#1a1a1a;--text-mid:#555;--text-light:#888;--border:#e8e8e8;
--font-head:'Helvetica Neue',Helvetica,Arial,sans-serif;
--font-body:'Helvetica Neue',Helvetica,Arial,sans-serif;
--max-w:1200px;--pad:clamp(16px,4vw,40px);
--sec-pad:clamp(56px,8vw,100px);
--ease:cubic-bezier(.25,.46,.45,.94);
}
.container{width:100%;max-width:var(--max-w);margin:0 auto;padding:0 var(--pad)}
/* ── TYPOGRAPHY ── */
.sec-label{font-family:var(--font-body);font-size:11px;font-weight:600;
letter-spacing:.2em;text-transform:uppercase;color:var(--gold);
margin-bottom:14px;display:flex;align-items:center;gap:10px}
.sec-label::before{content:'';width:28px;height:1px;background:var(--gold);flex-shrink:0}
.sec-title{font-family:var(--font-head);font-size:clamp(1.8rem,4vw,3.2rem);
font-weight:700;line-height:1.1;color:var(--navy-dark);margin-bottom:20px}
.sec-sub{font-size:clamp(.9rem,2vw,1rem);color:var(--text-mid);line-height:1.7;max-width:580px}
/* ── BUTTONS ── */
.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:10px;
background:var(--navy);color:var(--white)!important;font-family:var(--font-body);
font-weight:600;font-size:.9rem;letter-spacing:.05em;padding:14px 32px;
border-radius:2px;transition:all .25s var(--ease);border:2px solid var(--navy);
min-height:44px;white-space:nowrap}
.btn-primary:hover{background:var(--navy-dark);border-color:var(--navy-dark);transform:translateY(-1px)}
.btn-gold{display:inline-flex;align-items:center;justify-content:center;gap:10px;
background:var(--gold);color:var(--white)!important;font-family:var(--font-body);
font-weight:600;font-size:.9rem;letter-spacing:.05em;padding:14px 32px;
border-radius:2px;transition:all .25s var(--ease);min-height:44px;white-space:nowrap}
.btn-gold:hover{background:#b8841f;transform:translateY(-1px)}
.btn-outline{display:inline-flex;align-items:center;justify-content:center;gap:10px;
background:transparent;color:var(--white)!important;font-family:var(--font-body);
font-weight:500;font-size:.9rem;padding:13px 31px;border-radius:2px;
border:1.5px solid rgba(255,255,255,.5);transition:all .25s var(--ease);min-height:44px}
.btn-outline:hover{border-color:var(--white);background:rgba(255,255,255,.1)}
/* ── NAVBAR ── */
.navbar{position:fixed;top:0;left:0;right:0;z-index:100;
background:rgba(255,255,255,.96);-webkit-backdrop-filter:blur(12px);
backdrop-filter:blur(12px);border-bottom:1px solid var(--border);
transition:box-shadow .3s}
.navbar.scrolled{box-shadow:0 2px 20px rgba(0,0,0,.06)}
.nav-inner{display:flex;align-items:center;height:80px;gap:clamp(16px,3vw,40px);
position:relative}
.nav-logo{display:flex;align-items:center;flex-shrink:0;line-height:0}
.nav-menu{display:flex;align-items:center;gap:clamp(16px,2.5vw,32px);flex:1}
.nav-menu a{font-size:.85rem;font-weight:500;color:var(--text-mid);letter-spacing:.03em;
transition:color .2s;position:relative;min-height:44px;display:flex;align-items:center}
.nav-menu a::after{content:'';position:absolute;bottom:6px;left:0;right:0;height:1.5px;
background:var(--navy);transform:scaleX(0);transform-origin:left;
transition:transform .25s var(--ease)}
.nav-menu a:hover{color:var(--navy)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.active{color:var(--navy)}
.nav-menu a.active::after{transform:scaleX(1)}
.nav-cta{margin-left:auto;flex-shrink:0}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;
width:44px;height:44px;cursor:pointer;padding:10px 8px;flex-shrink:0;margin-left:auto}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--navy);
border-radius:2px;transition:all .25s var(--ease);transform-origin:center}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;transform:scaleX(0)}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
.nav-mobile{display:none;position:absolute;top:80px;left:0;right:0;
background:var(--white);flex-direction:column;
border-bottom:1px solid var(--border);
box-shadow:0 8px 24px rgba(0,0,0,.08);z-index:99}
.nav-mobile.is-open{display:flex}
.nav-mobile a{font-size:1rem;font-weight:500;color:var(--text-mid);
padding:14px var(--pad);border-bottom:1px solid var(--border);
min-height:52px;display:flex;align-items:center}
.nav-mobile a:last-child{border-bottom:none}
.nav-mobile .nav-mobile-cta{background:var(--navy);color:var(--white)!important;
font-weight:600;justify-content:center;margin:12px var(--pad);border-radius:2px;
border-bottom:none!important;min-height:48px}
/* ── PAGE HERO ── */
.ddx-page-hero{background:var(--navy-dark);padding:120px 0 60px;position:relative;overflow:hidden}
.ddx-page-hero::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;
background:linear-gradient(135deg,rgba(0,56,117,.95) 0%,rgba(0,82,164,.8) 100%)}
.ddx-page-hero::after{content:'DDX';position:absolute;bottom:-20px;right:-10px;
font-family:var(--font-head);font-size:clamp(14vw,20vw,20vw);font-weight:700;
color:rgba(255,255,255,.03);line-height:1;pointer-events:none;user-select:none}
.ddx-page-hero-inner{position:relative;z-index:1}
.ddx-breadcrumb{display:flex;align-items:center;gap:8px;margin-bottom:16px}
.ddx-breadcrumb a,.ddx-breadcrumb span{font-size:.8rem;color:rgba(255,255,255,.5);letter-spacing:.05em}
.ddx-breadcrumb a:hover{color:rgba(255,255,255,.8)}
.ddx-breadcrumb-sep{color:rgba(255,255,255,.3);font-size:.75rem}
.ddx-page-hero-title{font-family:var(--font-head);font-size:clamp(2rem,5vw,3.8rem);
font-weight:700;color:var(--white);line-height:1.1;margin-bottom:12px}
.ddx-page-hero-sub{font-size:.95rem;color:rgba(255,255,255,.6);line-height:1.6;max-width:480px}
/* ── CONTACT LAYOUT ── */
.ddx-contact-section{padding:var(--sec-pad) 0}
.ddx-contact-grid{display:grid;grid-template-columns:3fr 2fr;gap:clamp(32px,5vw,64px);align-items:flex-start}
/* ── FORM ── */
.ddx-form-box{background:var(--white);border:1px solid var(--border);border-radius:2px;padding:40px}
.ddx-form-title{font-family:var(--font-head);font-size:1.8rem;font-weight:700;
color:var(--navy-dark);margin-bottom:8px}
.ddx-form-sub{font-size:.88rem;color:var(--text-mid);line-height:1.6;margin-bottom:28px}
.ddx-form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.ddx-form-group{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}
.ddx-form-label{font-size:.8rem;font-weight:600;color:var(--text);letter-spacing:.03em}
.ddx-form-label span{color:#c0392b}
.ddx-form-input,.ddx-form-select,.ddx-form-textarea{width:100%;padding:12px 14px;
border:1.5px solid var(--border);border-radius:2px;font-size:.93rem;
color:var(--text);background:var(--white);
transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
outline:none}
.ddx-form-input:focus,.ddx-form-select:focus,.ddx-form-textarea:focus{
border-color:var(--navy);box-shadow:0 0 0 3px rgba(0,82,164,.08)}
.ddx-form-input::placeholder,.ddx-form-textarea::placeholder{color:var(--text-light)}
.ddx-form-select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23888' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
background-repeat:no-repeat;background-position:right 14px center;
padding-right:36px;cursor:pointer}
.ddx-form-textarea{resize:vertical;min-height:100px;line-height:1.6}
.ddx-form-checkbox{display:flex;gap:10px;align-items:flex-start;margin-bottom:20px}
.ddx-form-checkbox input[type="checkbox"]{width:18px;height:18px;min-width:18px;
border:1.5px solid var(--border);border-radius:2px;margin-top:1px;cursor:pointer;
accent-color:var(--navy)}
.ddx-form-checkbox label{font-size:.86rem;color:var(--text-mid);line-height:1.5;cursor:pointer}
.ddx-form-submit{width:100%;justify-content:center;font-size:1rem;padding:16px 32px;min-height:52px}
.ddx-form-note{text-align:center;font-size:.78rem;color:var(--text-light);margin-top:12px;
display:flex;align-items:center;justify-content:center;gap:6px}
/* ── INFO COLUMN ── */
.ddx-info-col{}
.ddx-info-cards{display:flex;flex-direction:column;gap:14px;margin-bottom:28px}
.ddx-info-card{display:flex;gap:16px;align-items:flex-start;padding:18px 20px;
border:1px solid var(--border);border-radius:2px;
transition:border-color .2s,box-shadow .2s}
.ddx-info-card:hover{border-color:var(--navy);box-shadow:0 4px 16px rgba(0,82,164,.06)}
.ddx-info-icon{width:44px;height:44px;min-width:44px;background:var(--navy);
display:flex;align-items:center;justify-content:center;border-radius:2px;flex-shrink:0}
.ddx-info-icon svg{color:var(--white)}
.ddx-info-label{font-size:.72rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;
color:var(--text-light);margin-bottom:4px}
.ddx-info-value{font-size:.92rem;font-weight:600;color:var(--navy-dark);line-height:1.4}
.ddx-info-value a{color:var(--navy);transition:color .2s}
.ddx-info-value a:hover{color:var(--navy-dark)}
.ddx-contact-img{border-radius:2px;overflow:hidden;height:220px;margin-top:4px}
.ddx-contact-img img{width:100%;height:100%;object-fit:cover;object-position:center}
/* ── MAP SECTION ── */
.ddx-map-section{padding:56px 0;background:var(--ivory)}
.ddx-map-placeholder{height:280px;background:var(--warm-grey);border-radius:2px;
display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
border:2px dashed rgba(0,0,0,.12)}
.ddx-map-placeholder svg{color:var(--navy);opacity:.5}
.ddx-map-placeholder p{font-size:.9rem;color:var(--text-mid)}
.ddx-map-placeholder a{font-size:.88rem;font-weight:600;color:var(--navy);
border-bottom:1px solid var(--navy);padding-bottom:1px;transition:opacity .2s}
.ddx-map-placeholder a:hover{opacity:.7}
/* ── WHY DDX ── */
.ddx-why-section{padding:var(--sec-pad) 0}
.ddx-why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px}
.ddx-why-box{padding:32px 28px;border:1px solid var(--border);border-radius:2px;
text-align:center;transition:box-shadow .3s,transform .3s,border-color .3s}
.ddx-why-box:hover{box-shadow:0 8px 32px rgba(0,0,0,.08);transform:translateY(-3px);border-color:var(--navy)}
.ddx-why-icon{width:56px;height:56px;background:var(--navy);border-radius:2px;
display:flex;align-items:center;justify-content:center;margin:0 auto 18px;color:var(--white)}
.ddx-why-title{font-family:var(--font-head);font-size:1.25rem;font-weight:700;
color:var(--navy-dark);margin-bottom:10px}
.ddx-why-desc{font-size:.86rem;color:var(--text-mid);line-height:1.7}
/* ── FOOTER ── */
.footer{background:var(--black);padding:52px 0 24px}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:clamp(24px,4vw,48px);
padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand-desc{font-size:.8rem;color:rgba(255,255,255,.4);line-height:1.75;
margin:14px 0 18px}
.footer-col-title{font-size:.7rem;font-weight:600;letter-spacing:.14em;
text-transform:uppercase;color:var(--gold);margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:.83rem;color:rgba(255,255,255,.45);transition:color .2s;
min-height:32px;display:flex;align-items:center}
.footer-links a:hover{color:var(--white)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;
padding-top:20px;flex-wrap:wrap;gap:10px}
.footer-copy,.footer-legal{font-size:.74rem;color:rgba(255,255,255,.25)}
/* ── ANIMATIONS ── */
.fade-up{opacity:0;transform:translateY(28px);
transition:opacity .7s var(--ease),transform .7s var(--ease)}
.fade-up.visible{opacity:1;transform:translateY(0)}
.fade-up-d1{transition-delay:.08s}
.fade-up-d2{transition-delay:.16s}
/* ── RESPONSIVE ── */
@media(max-width:1023px){
.ddx-contact-grid{grid-template-columns:1fr;gap:36px}
.ddx-why-grid{grid-template-columns:1fr 1fr}
.footer-top{grid-template-columns:1fr 1fr}
.nav-menu{display:none}
.nav-cta{display:none}
.nav-toggle{display:flex}
}
@media(max-width:767px){
.ddx-form-row{grid-template-columns:1fr}
.ddx-why-grid{grid-template-columns:1fr}
.footer-top{grid-template-columns:1fr}
.footer-bottom{flex-direction:column;text-align:center}
.ddx-form-box{padding:24px 20px}
}
@media(prefers-reduced-motion:reduce){
.fade-up{opacity:1;transform:none}
*{animation:none!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}
/* ── MEGA MENU ── */
.nav-item{position:relative;display:flex;align-items:center}
.has-mega{font-size:.85rem;font-weight:500;color:var(--text-mid);letter-spacing:.03em;
background:none;border:none;cursor:pointer;display:flex;align-items:center;gap:5px;
padding:0;font-family:inherit;min-height:44px;transition:color .2s}
.has-mega:hover{color:var(--navy)}
.has-mega .mega-chevron{transition:transform .25s var(--ease)}
.nav-item:hover .has-mega .mega-chevron{transform:rotate(180deg)}
.mega-menu{
position:absolute;top:100%;left:-20px;
width:560px;background:var(--white);
border:1px solid var(--border);border-top:2px solid var(--navy);
border-radius:0 0 4px 4px;
box-shadow:0 12px 40px rgba(0,0,0,.12);
padding:28px 24px 24px;
display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
opacity:0;visibility:hidden;transform:translateY(8px);
transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
z-index:200;pointer-events:none}
.nav-item:hover .mega-menu{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto}
.mega-col-icon{width:32px;height:32px;background:var(--ivory);border-radius:50%;
display:flex;align-items:center;justify-content:center;margin-bottom:10px}
.mega-col-title{font-size:.68rem;font-weight:700;letter-spacing:.12em;
color:var(--navy);text-transform:uppercase;
padding-bottom:8px;margin-bottom:8px;border-bottom:1px solid var(--border)}
.mega-link{display:block;font-size:.82rem;color:var(--text-mid);
padding:4px 0;text-decoration:none;transition:color .15s,padding-left .15s;line-height:1.5}
.mega-link:hover{color:var(--navy);padding-left:4px}
/* Mobile accordion */
.nav-mobile-group{border-bottom:1px solid var(--border)}
.nav-mobile-parent{width:100%;text-align:left;font-size:1rem;font-weight:500;
color:var(--text-mid);padding:14px var(--pad);display:flex;justify-content:space-between;
align-items:center;background:none;border:none;cursor:pointer;font-family:inherit;
min-height:52px}
.nav-mobile-parent .mega-chevron{flex-shrink:0;transition:transform .25s}
.nav-mobile-group.open .nav-mobile-parent .mega-chevron{transform:rotate(180deg)}
.nav-mobile-sub{display:none;background:var(--ivory)}
.nav-mobile-group.open .nav-mobile-sub{display:block}
.nav-mobile-sub a{font-size:.9rem;color:var(--text-mid);
padding:10px var(--pad) 10px calc(var(--pad) + 20px);
display:flex;align-items:center;gap:8px;border-bottom:1px solid var(--border);
min-height:44px;text-decoration:none}
.nav-mobile-sub a::before{content:'';width:4px;height:4px;background:var(--gold);
border-radius:50%;flex-shrink:0}
/* ── HEADING LIGHT WEIGHT ── */
.sec-title,.ddx-hero-h1,.ddx-cta-title,.ddx-news-card-title,
.ddx-article-h1,.ddx-page-hero-title,.page-title,
.ddx-hero-bg-text{font-weight:300!important;letter-spacing:-.01em}
.ddx-hero-h1{letter-spacing:-.02em}
/* ── SỐ THỨ TỰ item (product & news) ── */
.ddx-product-card,
.ddx-news-card { position: relative; }
.ddx-item-num {
position: absolute;
top: 10px;
left: 10px;
z-index: 2;
font-size: .65rem;
font-weight: 800;
letter-spacing: .08em;
color: var(--white);
background: var(--navy);
border-radius: 4px;
padding: 3px 7px;
line-height: 1;
pointer-events: none;
}