:root{
  --yellow:#FFDE00; --yellow2:#FFD200; --yellow-soft:#FFF7CC;
  --black:#141414; --ink:#1d1d1f; --mut:#5c5c60; --line:#e7e3d5;
  --blue:#0b5cad; --green:#0a8f3c; --red:#d62828; --teal:#147D73;
  --radius:14px; --shadow:0 8px 28px rgba(20,20,20,.10);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:#fff;line-height:1.6;font-size:16px}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
.wrap{max-width:1200px;margin:0 auto;padding:0 16px}
b,strong{font-weight:700}

/* topbar */
.topbar{background:#0a0a0a;color:#c9c9c9;font-size:13px}
.topbar-in{display:flex;justify-content:space-between;gap:16px;padding-top:7px;padding-bottom:7px;flex-wrap:wrap}
.topbar a{color:#e8e8e8;margin-left:16px}
.topbar a.tb-hot{color:var(--yellow);font-weight:800}
.topbar a:hover{color:#fff}

/* header */
.header{background:#fff;position:sticky;top:0;z-index:50;box-shadow:0 2px 10px rgba(0,0,0,.10);border-bottom:1px solid #eee}
.header-in{display:flex;align-items:center;gap:22px;padding-top:10px;padding-bottom:10px}
.logo{display:flex;align-items:center;gap:10px;line-height:1;text-decoration:none!important}
.logo-ic{background:var(--yellow);border-radius:10px;font-size:26px;width:48px;height:48px;display:flex;align-items:center;justify-content:center;box-shadow:inset 0 0 0 2px rgba(0,0,0,.08)}
.logo-txt{font-weight:900;font-size:21px;letter-spacing:.4px;color:#111;display:flex;flex-direction:column}
.logo-txt em{font-style:normal;font-size:15px;letter-spacing:3.5px;font-weight:800}
.nav{display:flex;gap:22px;margin-left:8px;flex:1;flex-wrap:wrap}
.nav a{color:#2b2b2e;font-weight:600;font-size:15px}
.nav a:hover{color:#000;text-decoration:underline}
.header-cta{display:flex;gap:10px;align-items:center}
.btn-reg{background:var(--yellow);color:#111;font-weight:800;padding:11px 20px;border-radius:10px;font-size:15px;white-space:nowrap;box-shadow:0 2px 6px rgba(0,0,0,.12)}
.btn-reg:hover{background:var(--yellow2);text-decoration:none}
.btn-yellow{background:#111;color:var(--yellow);font-weight:800;padding:10px 18px;border-radius:999px;font-size:14.5px;white-space:nowrap}
.btn-yellow:hover{background:#000;color:#fff;text-decoration:none}
.burger{display:none;background:#111;color:var(--yellow);border:0;border-radius:8px;font-size:20px;padding:6px 12px;cursor:pointer}

/* hero */
.hero{background:radial-gradient(ellipse 700px 340px at 50% 30%,rgba(255,255,255,.75),rgba(255,255,255,0) 70%),linear-gradient(160deg,#FFDF00 0%,var(--yellow) 60%,#ffd200 100%);padding:46px 0 54px}
.hero .kicker{display:inline-block;background:#111;color:var(--yellow);font-weight:800;letter-spacing:2px;font-size:12.5px;text-transform:uppercase;padding:5px 14px;border-radius:6px}
.hero h1{font-size:clamp(28px,4.4vw,46px);font-weight:900;line-height:1.18;color:#111;margin:14px 0 8px;max-width:820px}
.hero p.lead{font-size:18px;color:#262200;max-width:720px;margin-bottom:22px;font-weight:600}
.hero-tags{margin-top:16px;display:flex;gap:8px;flex-wrap:wrap;align-items:center;font-size:14px;font-weight:700;color:#111}
.hero-tags a{background:#fff;color:#111;border-radius:999px;padding:6px 14px;font-size:13.5px;font-weight:600;box-shadow:0 1px 4px rgba(0,0,0,.12)}
.hero-tags a:hover{background:#111;color:var(--yellow);text-decoration:none}
.searchbox{background:#fff;border-radius:999px;box-shadow:var(--shadow);padding:10px;display:grid;grid-template-columns:1.6fr 1fr auto;gap:10px;border:2px solid #111}
.searchbox input,.searchbox select{border-radius:999px!important}
.btn-search{border-radius:999px!important}
.stats-strip{background:#F8F6EE;padding:30px 0;border-bottom:1px solid var(--line)}
.stats-strip .stats{margin-top:0}
.stats-strip .stat{background:transparent;border:0;border-radius:0;padding:6px 10px}
.stats-strip .stat b{font-size:30px;border-bottom:4px solid var(--yellow);display:inline-block;padding-bottom:2px}
.searchbox.plain{border-radius:16px;grid-template-columns:1.6fr 1fr 1fr auto}
.searchbox.plain input,.searchbox.plain select{border-radius:10px!important}
.searchbox.plain .btn-search{border-radius:10px!important}
.searchbox input,.searchbox select{border:1.5px solid #d8d8d8;border-radius:10px;padding:13px 14px;font-size:15.5px;font-family:inherit;width:100%;background:#fff}
.searchbox input:focus,.searchbox select:focus{outline:2px solid var(--yellow2);border-color:#111}
.btn-search{background:#111;color:var(--yellow);border:0;border-radius:10px;font-weight:800;font-size:16px;padding:13px 26px;cursor:pointer;font-family:inherit;white-space:nowrap}
.btn-search:hover{background:#000;color:#fff}
.search-under{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;margin-top:10px;font-size:13.5px;color:#3a3400}
.search-under label{display:flex;gap:6px;align-items:center;cursor:pointer;font-weight:600}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:26px}
.stat{background:rgba(255,255,255,.92);border:2px solid #111;border-radius:12px;padding:14px 16px;text-align:center}
.stat b{display:block;font-size:24px;font-weight:900;color:#111}
.stat span{font-size:13.5px;color:#444}
.hero-note{margin-top:14px;font-size:13.5px;color:#3a3400;font-weight:600}

/* sections */
.section{padding:52px 0}
.section.alt{background:#FFFBEB}
.section.gray{background:#f7f6f1}
.kicker2{color:var(--teal);font-weight:800;letter-spacing:1.4px;text-transform:uppercase;font-size:13px;text-align:center}
.section h2{font-size:clamp(24px,3.2vw,36px);font-weight:900;text-align:center;line-height:1.25;margin:8px auto 10px;max-width:820px}
.section h2 em{font-style:normal;background:linear-gradient(transparent 62%,var(--yellow) 62%)}
.section .sub{text-align:center;color:var(--mut);max-width:760px;margin:0 auto 30px}
.helpbox{max-width:860px;margin:0 auto 26px;background:var(--yellow-soft);border:1.5px dashed #c9a400;border-radius:12px;padding:14px 18px;font-size:14.5px}

/* niengiam cards */
.grid{display:grid;gap:16px}
.grid.c3{grid-template-columns:repeat(3,1fr)}
.grid.c4{grid-template-columns:repeat(4,1fr)}
.grid.c2{grid-template-columns:repeat(2,1fr)}
.ng-card{background:#fff;border:1.5px solid var(--line);border-radius:var(--radius);padding:18px;transition:.18s;display:block;color:inherit}
.ng-card:hover{border-color:#111;box-shadow:var(--shadow);text-decoration:none;transform:translateY(-2px)}
.ng-card .ic{font-size:30px}
.ng-card .big{font-size:30px;font-weight:900;color:#111;border-bottom:4px solid var(--yellow);display:inline-block;line-height:1.15}
.ng-card h3{font-size:18px;font-weight:800;margin:6px 0 2px;color:#111}
.ng-card .cnt{color:#555;font-weight:600;font-size:14px}
.ng-card .more{color:#111;font-weight:800;font-size:14px;background:linear-gradient(transparent 60%,var(--yellow) 60%);display:inline-block;margin-top:8px}
.ng-card p{font-size:13.5px;color:var(--mut);margin-top:6px}
.ng-card .subs{margin-top:8px;display:flex;flex-wrap:wrap;gap:6px}
.chip{display:inline-block;background:#f4f1e4;border:1px solid #e0d9bd;color:#333;border-radius:999px;padding:3px 10px;font-size:12.5px;font-weight:600}
a.chip:hover{background:var(--yellow);text-decoration:none;color:#111}
.center{text-align:center;margin-top:28px}
.btn-dark{background:#111;color:var(--yellow);font-weight:800;padding:13px 26px;border-radius:999px;display:inline-block}
.btn-dark:hover{color:#fff;text-decoration:none}
.btn-outline{border:2px solid #111;color:#111;font-weight:800;padding:11px 24px;border-radius:999px;display:inline-block;background:#fff}
.btn-outline:hover{background:var(--yellow);text-decoration:none}

/* A-Z */
.az{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;max-width:900px;margin:0 auto}
.az a{width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:#fff;border:2px solid #111;border-radius:10px;font-weight:900;color:#111;font-size:17px}
.az a:hover,.az a.on{background:var(--yellow);text-decoration:none}
.az-list{max-width:980px;margin:26px auto 0;columns:2;column-gap:36px}
.az-list a{display:block;padding:7px 4px;border-bottom:1px dashed #e3ddc8;color:#222;font-size:15px;break-inside:avoid}
.az-list a b{color:#111}
.az-list a .n{color:#b48a00;font-weight:700;font-size:13px}
.az-list a:hover{color:var(--blue)}

/* company listings */
.co-card{background:#fff;border:1.5px solid var(--line);border-radius:var(--radius);padding:18px;display:flex;flex-direction:column;gap:6px}
.co-card:hover{border-color:#c9a400;box-shadow:var(--shadow)}
.co-card h3{font-size:17px;font-weight:800;color:#111;line-height:1.35}
.verified{color:var(--blue);font-weight:800;font-size:13px;white-space:nowrap}
.co-meta{font-size:13.5px;color:var(--mut)}
.co-card p{font-size:14.5px;color:#333}
.co-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:2px}
.co-foot{margin-top:auto;padding-top:10px;display:flex;gap:8px;flex-wrap:wrap}
.btn-mini{font-size:13.5px;font-weight:700;padding:8px 14px;border-radius:999px;display:inline-block}
.btn-mini.call{background:var(--yellow);color:#111;border:1.5px solid #111}
.btn-mini.zalo{background:#0068ff;color:#fff}
.btn-mini:hover{text-decoration:none;opacity:.9}

/* provinces */
.prov{display:grid;grid-template-columns:repeat(4,1fr);gap:8px 18px;max-width:1080px;margin:0 auto}
.prov a{color:#222;font-size:14.5px;padding:6px 8px;border-radius:8px}
.prov a:hover{background:var(--yellow-soft);color:#111;text-decoration:none}
.prov a .n{color:#b48a00;font-size:12.5px;font-weight:700}

/* business cards */
.biz-card{background:#fff;border:2px solid #111;border-radius:16px;padding:24px;position:relative;box-shadow:6px 6px 0 var(--yellow)}
.biz-card .price{position:absolute;top:-13px;right:16px;background:#111;color:var(--yellow);font-weight:800;font-size:12.5px;padding:4px 12px;border-radius:999px}
.biz-card h3{font-size:19px;font-weight:800;margin-bottom:8px}
.biz-card p{font-size:14.5px;color:#333}
.biz-card ul{margin:10px 0 14px 18px;font-size:14.5px}
.biz-cta{background:var(--yellow);color:#111;border-radius:16px;padding:30px;text-align:center;margin-top:34px;border:2px solid #111}
.biz-cta h3{color:#111;font-size:22px;margin-bottom:6px}
.biz-cta a{color:#111;font-weight:700}
.biz-cta .btn-yellow{background:#111;color:var(--yellow)}

/* FAQ */
.faq{max-width:860px;margin:0 auto}
.faq details{background:#fff;border:1.5px solid var(--line);border-radius:12px;margin-bottom:10px;padding:16px 20px}
.faq summary{font-weight:700;cursor:pointer;font-size:16px;color:#111}
.faq details p{margin-top:8px;color:#333;font-size:15px}

/* page hero (subpages) */
.pagehero{background:radial-gradient(ellipse 700px 300px at 50% 20%,rgba(255,255,255,.7),rgba(255,255,255,0) 70%),linear-gradient(160deg,#FFDF00,var(--yellow2));padding:40px 0}
.pagehero h1{font-size:clamp(26px,3.8vw,40px);font-weight:900;color:#111;line-height:1.22;max-width:860px}
.pagehero p{margin-top:8px;font-size:17px;color:#262200;max-width:760px}
.pagehero .kicker{font-weight:800;letter-spacing:1.4px;font-size:13px;text-transform:uppercase;color:#111;opacity:.7}
.prose{max-width:860px;margin:0 auto}
.prose h2{font-size:26px;font-weight:900;margin:30px 0 10px;text-align:left}
.prose h3{font-size:19px;font-weight:800;margin:20px 0 6px}
.prose p,.prose li{font-size:15.5px;color:#2c2c2e}
.prose ul,.prose ol{margin:8px 0 8px 22px}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:20px 0}
.step{background:#fff;border:1.5px solid var(--line);border-radius:12px;padding:18px}
.step .num{display:inline-flex;width:34px;height:34px;border-radius:50%;background:var(--yellow);border:2px solid #111;font-weight:900;align-items:center;justify-content:center;margin-bottom:8px}
.step h3{margin:0 0 6px;font-size:16.5px}
.step p{font-size:14.5px;color:#444}

/* forms */
.form-card{max-width:720px;margin:0 auto;background:#fff;border:2px solid #111;border-radius:16px;box-shadow:8px 8px 0 var(--yellow);padding:28px}
.form-card h2{font-size:22px;text-align:left;margin-bottom:4px}
.form-card .sub2{color:var(--mut);font-size:14.5px;margin-bottom:18px;text-align:left}
.f-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.f-group{margin-bottom:12px}
.f-group label{display:block;font-weight:700;font-size:14px;margin-bottom:5px}
.f-group input,.f-group select,.f-group textarea{width:100%;border:1.5px solid #d8d8d8;border-radius:10px;padding:12px 13px;font-size:15px;font-family:inherit}
.f-group input:focus,.f-group select:focus,.f-group textarea:focus{outline:2px solid var(--yellow2);border-color:#111}
.form-ok{background:#e8f7ec;border:1.5px solid var(--green);color:#0a5c28;border-radius:12px;padding:16px 18px;font-size:15px;margin-bottom:14px}
button.btn-search{width:100%;padding:14px}

/* price cards */
.price-card{background:#fff;border:2px solid #111;border-radius:16px;padding:26px;position:relative}
.price-card.hot{box-shadow:8px 8px 0 var(--yellow)}
.price-card .tag{position:absolute;top:-13px;left:20px;background:var(--red);color:#fff;font-weight:800;font-size:12.5px;padding:4px 12px;border-radius:999px}
.price-card h3{font-size:20px;font-weight:900}
.price-card .p{font-size:24px;font-weight:900;color:#b48a00;margin:6px 0}
.price-card ul{margin:10px 0 16px 18px;font-size:14.5px}
table.cmp{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;overflow:hidden;font-size:15px}
table.cmp th,table.cmp td{border:1px solid var(--line);padding:12px 14px;text-align:left}
table.cmp th{background:var(--yellow);color:#111}

/* footer */
.footer{background:var(--yellow);color:#111;padding:40px 0 26px;margin-top:0}
.foot-links{text-align:center;font-size:15px;font-weight:600;margin-bottom:24px;line-height:2}
.foot-links a{color:#111}
.foot-links a:hover{color:#000;text-decoration:underline}
.foot-company{text-align:center;font-size:14.5px}
.foot-company p{margin-bottom:5px}
.foot-company .fc-name{font-weight:900;font-size:16.5px;text-transform:uppercase}
.foot-company a{color:#111}
.foot-copy{text-align:center;margin-top:20px;padding-top:14px;border-top:1px solid rgba(0,0,0,.25);font-size:13.5px}

/* floating buttons */
.float-btns{position:fixed;right:16px;bottom:18px;z-index:60;display:flex;flex-direction:column;gap:10px}
.fbtn{width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:22px;box-shadow:0 4px 14px rgba(0,0,0,.25);border:0;cursor:pointer;text-decoration:none!important}
.fbtn.call{background:var(--yellow);color:#111;border:2px solid #111}
.fbtn.zalo{background:#0068ff;color:#fff}
.fbtn.top{background:#111;color:var(--yellow);font-weight:900}
.fbtn:hover{transform:translateY(-2px)}

.notice{background:#fff3cd;border:1.5px solid #e6c200;border-radius:12px;padding:14px 18px;font-size:14.5px;max-width:860px;margin:0 auto 20px}

@media(max-width:980px){
  .grid.c4{grid-template-columns:repeat(2,1fr)}
  .grid.c3{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .prov{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
  .searchbox{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
  .nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;padding:14px 18px;gap:12px;border-bottom:3px solid var(--yellow);box-shadow:0 10px 20px rgba(0,0,0,.12)}
  .nav.open{display:flex}
  .header-in{position:relative;flex-wrap:wrap}
  .burger{display:block}
  .btn-call{display:none}
  .grid.c4,.grid.c3,.grid.c2{grid-template-columns:1fr}
  .searchbox{grid-template-columns:1fr}
  .az-list{columns:1}
  .f-row{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .topbar-r{display:none}
  .logo-mark{font-size:22px}
}