*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.7;color:#203047;background:#fff}a{color:#145da0;text-underline-offset:3px}a:hover{color:#0a3d70}.wrap{width:min(1120px,92%);margin:auto}.topbar{background:#0d2e55;color:#fff;font-size:.92rem}.topbar .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:7px 0}.topbar a{color:#fff}.header{background:#fff;border-bottom:1px solid #e5ebf2;position:sticky;top:0;z-index:10}.navrow{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:13px 0}.brand{font-weight:800;font-size:1.08rem;color:#103b6b;text-decoration:none;line-height:1.25}.brand small{display:block;color:#52677e;font-weight:500;font-size:.78rem;margin-top:4px}.nav{display:flex;align-items:center;gap:18px;flex-wrap:wrap}.nav a{text-decoration:none;font-weight:650;font-size:.94rem}.btn{display:inline-block;border-radius:9px;background:#1467ad;color:#fff!important;padding:11px 17px;text-decoration:none;font-weight:750;border:0}.btn.secondary{background:#e9f3ff;color:#124b81!important}.hero{background:linear-gradient(135deg,#edf6ff,#fff 62%);padding:58px 0 48px;border-bottom:1px solid #e5edf5}.eyebrow{color:#1467ad;font-weight:800;text-transform:uppercase;letter-spacing:.06em;font-size:.82rem}.hero h1{font-size:clamp(2rem,4.5vw,3.2rem);line-height:1.15;color:#102f53;max-width:850px;margin:10px 0 18px}.hero p{font-size:1.12rem;max-width:790px;color:#465b70}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.section{padding:42px 0}.section.alt{background:#f6f9fc}.section h2{color:#123b67;font-size:clamp(1.45rem,3vw,2rem);line-height:1.25;margin:0 0 14px}.lead{font-size:1.08rem;color:#4a5e73;max-width:850px}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.card{border:1px solid #e1e9f1;border-radius:15px;padding:22px;background:#fff;box-shadow:0 5px 20px rgba(19,55,90,.045)}.card h3{margin:0 0 9px;color:#153e69;font-size:1.17rem}.card p{margin:8px 0;color:#4c6074}.card .more{font-weight:750}.tag{display:inline-block;background:#e8f3ff;color:#15568d;border-radius:999px;padding:3px 10px;font-size:.8rem;font-weight:750;margin-bottom:9px}.notice{border-left:4px solid #e0a12d;background:#fff8e8;padding:15px 18px;border-radius:8px;color:#624b20;margin:20px 0}.checklist{padding-left:1.25rem}.checklist li{margin:.4rem 0}.faq details{border-bottom:1px solid #dce5ed;padding:13px 0}.faq summary{font-weight:750;cursor:pointer;color:#173e67}.faq p{margin:9px 0 2px}.breadcrumbs{font-size:.9rem;color:#61758a;margin-bottom:14px}.breadcrumbs a{color:#426b91}.content{max-width:850px}.content h2{margin-top:32px}.content h3{color:#244b72}.content li{margin:.4rem 0}.contactline{font-size:1.2rem;font-weight:800}.footer{background:#0d2e55;color:#eaf3ff;padding:35px 0;margin-top:25px}.footer a{color:#fff}.footergrid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:25px}.footer h2,.footer h3{color:#fff;margin-top:0}.footer p{color:#d5e3f2}.footerlinks{display:grid;gap:7px}.small{font-size:.9rem;color:#62768a}.center{text-align:center}.tablewrap{overflow-x:auto}table{border-collapse:collapse;width:100%;min-width:500px}th,td{border:1px solid #dce5ed;padding:11px;text-align:left}th{background:#edf5fc;color:#153e69}.mobilecall{display:none}img{max-width:100%;height:auto}@media(max-width:800px){.navrow{align-items:flex-start;flex-direction:column}.nav{gap:10px 15px}.grid,.grid.two{grid-template-columns:1fr}.footergrid{grid-template-columns:1fr}.hero{padding:40px 0}.header{position:static}.topbar .wrap{padding:8px 0}.mobilecall{display:block;position:fixed;bottom:0;left:0;right:0;z-index:20;background:#fff;border-top:1px solid #d9e4ee;padding:9px 4%;box-shadow:0 -3px 15px #123b6715}.mobilecall .actions{margin:0}.mobilecall .btn{flex:1;text-align:center}.footer{padding-bottom:85px}}


/* Accessibility and responsive polish */
.skip-link{position:absolute;left:12px;top:-100px;background:#fff;color:#123b67;border:2px solid #1467ad;border-radius:8px;padding:10px 14px;z-index:1000;font-weight:800}.skip-link:focus{top:12px}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #e0a12d;outline-offset:3px}
.btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center;text-align:center}
main{min-height:45vh}.content p,.content li{max-width:78ch}
@media(max-width:800px){.nav{width:100%;align-items:flex-start}.nav a{padding:4px 0}.nav .btn{padding:9px 13px}.mobilecall{padding-bottom:calc(9px + env(safe-area-inset-bottom));gap:8px}.mobilecall .btn{min-height:46px;font-size:.94rem}.hero p{font-size:1.04rem}.section{padding:34px 0}.card{padding:19px}.topbar{font-size:.86rem}}

@media(max-width:360px){.mobilecall .btn{white-space:nowrap;padding:8px 5px;font-size:.82rem}.mobilecall .actions{gap:7px}.nav{gap:7px 12px}.brand{font-size:1rem}}


/* V3: consistent regional navigation, office information and persistent contact buttons */
.nav-dropdown{position:relative;display:flex;align-items:center}
.nav-dropdown-toggle{display:inline-flex;align-items:center;gap:6px;white-space:nowrap;cursor:pointer;list-style:none}
.nav-dropdown-toggle::-webkit-details-marker{display:none}
.nav-dropdown-menu{display:none;position:absolute;top:100%;left:0;min-width:220px;padding:8px;background:#fff;border:1px solid #dce6f0;border-radius:12px;box-shadow:0 12px 28px rgba(13,46,85,.16);z-index:50}
.nav-dropdown-menu a{display:block;padding:10px 12px;border-radius:8px;white-space:nowrap;color:#173e67}
.nav-dropdown-menu a:hover,.nav-dropdown-menu a:focus-visible{background:#edf6ff}
.nav-dropdown[open] .nav-dropdown-menu,.nav-dropdown:hover .nav-dropdown-menu,.nav-dropdown:focus-within .nav-dropdown-menu{display:block}
.office-footer{background:#f2f7fc;border-top:1px solid #dfe9f2;padding:30px 0;margin-top:24px}
.office-footer-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,.9fr);gap:28px;align-items:center}
.office-footer-grid.office-no-map{grid-template-columns:minmax(0,1fr)}
.office-footer h2{margin:0 0 10px;color:#123b67;font-size:1.45rem}
.office-footer p{margin:8px 0;color:#425a72}
.office-kicker{font-size:.8rem!important;text-transform:uppercase;letter-spacing:.06em;font-weight:800;color:#1467ad!important}
.office-map{overflow:hidden;border-radius:14px;border:1px solid #d8e5f0;background:#eaf2fa;min-height:230px}
.office-map iframe{display:block;width:100%;height:260px;border:0}
.office-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px!important}
.office-hotline a{font-size:1.35rem;font-weight:850;color:#145da0;text-decoration:none}
.contact-float{position:fixed;right:18px;bottom:22px;z-index:1000;display:flex;flex-direction:column;gap:10px;align-items:flex-end}
.contact-float-btn{display:flex;align-items:center;gap:10px;min-height:50px;padding:8px 16px 8px 10px;border-radius:999px;box-shadow:0 5px 18px rgba(13,46,85,.22);font-weight:800;text-decoration:none;color:#fff!important;border:2px solid #fff}
.contact-float-btn.call{background:#087fce}
.contact-float-btn.zalo{background:#0877e8}
.contact-icon{font-size:23px;line-height:1;width:30px;height:30px;display:grid;place-items:center;border-radius:50%;background:#ffffff25}
.contact-z{font-weight:900;font-size:19px;line-height:1;width:30px;height:30px;display:grid;place-items:center;border-radius:8px;background:#fff;color:#0877e8}
.contact-float-btn:hover{transform:translateY(-1px);filter:brightness(.97)}
.mobilecall{display:none!important}
@media(max-width:800px){
 .nav-dropdown{display:block;width:100%}
 .nav-dropdown-toggle{padding:4px 0!important}
 .nav-dropdown-menu{position:static;box-shadow:none;border:0;border-left:3px solid #cfe2f5;border-radius:0;margin:2px 0 5px 8px;padding:2px 0 2px 8px;min-width:0}
 .nav-dropdown-menu a{white-space:normal;padding:7px 10px}
 .office-footer-grid{grid-template-columns:1fr;gap:16px}
 .office-map iframe{height:230px}
 .contact-float{right:12px;bottom:14px;gap:8px}
 .contact-float-btn{min-height:46px;padding:7px 12px 7px 8px;font-size:.9rem;gap:8px}
 .contact-icon,.contact-z{width:28px;height:28px}
 body{padding-bottom:0}
}
@media(max-width:360px){.contact-float{right:8px;bottom:10px}.contact-float-btn{font-size:.82rem;padding-right:10px;min-height:43px}}