:root{
  --primary:#0b6e4f;--primary-dark:#07513a;--accent:#f5a300;--danger:#e63946;
  --ink:#1c2a33;--muted:#5d6b75;--bg:#f4f8f6;--white:#fff;--line:#e2ebe7;
  --radius:14px;--shadow:0 6px 24px rgba(11,110,79,.12);
}
*{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:var(--white);line-height:1.65;font-size:16px}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-dark)}
ul{list-style:none}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 18px}
h1,h2,h3,h4{line-height:1.25;color:var(--ink)}
h1{font-size:clamp(28px,5vw,46px)}
h2{font-size:clamp(24px,3.4vw,34px)}
h3{font-size:19px}
section{padding:64px 0}
.section-head{text-align:center;max-width:720px;margin:0 auto 40px}
.section-head p{color:var(--muted);margin-top:10px}
.eyebrow{display:inline-block;background:#e3f4ec;color:var(--primary);font-weight:700;font-size:13px;letter-spacing:.06em;text-transform:uppercase;padding:5px 12px;border-radius:99px;margin-bottom:12px}
.bg-soft{background:var(--bg)}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 24px;border-radius:99px;font-weight:700;border:0;cursor:pointer;font-size:16px;transition:.2s;font-family:inherit}
.btn-primary{background:var(--accent);color:#2b1d00}
.btn-primary:hover{background:#ffb81f;color:#2b1d00;transform:translateY(-2px)}
.btn-green{background:var(--primary);color:#fff}
.btn-green:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px)}
.btn-outline{border:2px solid #fff;color:#fff;background:transparent}
.btn-outline:hover{background:#fff;color:var(--primary)}

/* top bar */
.topbar{background:var(--primary-dark);color:#d6efe5;font-size:14px}
.topbar .container{display:flex;justify-content:space-between;align-items:center;gap:12px;padding-top:8px;padding-bottom:8px;flex-wrap:wrap}
.topbar a{color:#fff;font-weight:600}
.topbar .pulse{display:inline-block;width:9px;height:9px;border-radius:50%;background:#4cff9a;margin-right:8px;animation:pulse 1.6s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(76,255,154,.7)}100%{box-shadow:0 0 0 10px rgba(76,255,154,0)}}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:#fff;box-shadow:0 2px 14px rgba(0,0,0,.07)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;gap:16px;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--primary);line-height:1.1}
.logo-mark{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--primary),#19a974);display:grid;place-items:center;color:#fff;font-size:22px}
.logo small{display:block;font-size:11px;font-weight:600;color:var(--muted);letter-spacing:.04em}
.nav>ul{display:flex;gap:4px;align-items:center}
.nav a{display:block;padding:10px 13px;color:var(--ink);font-weight:600;font-size:15px;border-radius:8px}
.nav a:hover,.nav a.active{color:var(--primary);background:#e8f5ef}
.nav .has-sub{position:relative}
.nav .sub{position:absolute;top:100%;left:0;min-width:260px;background:#fff;border-radius:12px;box-shadow:0 12px 32px rgba(0,0,0,.14);padding:8px;display:none}
.nav .has-sub:hover .sub{display:block}
.nav .sub a{font-weight:500}
.header-cta{display:flex;align-items:center;gap:10px}
.header-cta .btn{padding:10px 18px;font-size:15px}
.burger{display:none;background:none;border:0;font-size:30px;cursor:pointer;color:var(--primary)}

/* hero */
.hero{background:linear-gradient(120deg,rgba(7,81,58,.96),rgba(11,110,79,.88)),repeating-linear-gradient(45deg,#0b6e4f 0 12px,#0a6648 12px 24px);color:#fff;padding:72px 0 80px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;background:rgba(255,255,255,.06)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;position:relative;z-index:1}
.hero h1{color:#fff}
.hero h1 span{color:var(--accent)}
.hero p.lead{font-size:18px;margin:18px 0 26px;color:#dff3ea;max-width:560px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-badges{display:flex;gap:22px;margin-top:30px;flex-wrap:wrap}
.hero-badges div{font-size:14px;color:#cfeadf}
.hero-badges b{display:block;font-size:26px;color:#fff}
.hero-card{background:#fff;color:var(--ink);border-radius:20px;padding:28px;box-shadow:0 20px 50px rgba(0,0,0,.25)}
.hero-card h3{font-size:22px;color:var(--primary)}
.hero-card p{color:var(--muted);font-size:14px;margin:4px 0 16px}

/* countdown */
.countdown{display:flex;gap:10px;margin:14px 0 20px}
.countdown div{flex:1;background:#e8f5ef;border-radius:10px;text-align:center;padding:8px 4px}
.countdown b{display:block;font-size:26px;color:var(--primary);font-variant-numeric:tabular-nums}
.countdown span{font-size:12px;color:var(--muted)}

/* forms */
.form-row{margin-bottom:12px}
input,select,textarea{width:100%;padding:13px 14px;border:1.5px solid var(--line);border-radius:10px;font:inherit;background:#fff;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(11,110,79,.15)}
textarea{min-height:110px;resize:vertical}
.form-msg{margin-top:10px;font-weight:600;font-size:14px;display:none}
.form-msg.ok{display:block;color:var(--primary)}
.form-msg.err{display:block;color:var(--danger)}

/* features */
.grid{display:grid;gap:22px}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.feature{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.25s}
.feature:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.ico{width:54px;height:54px;border-radius:14px;background:#e3f4ec;display:grid;place-items:center;font-size:28px;margin-bottom:14px}
.feature p{color:var(--muted);font-size:15px;margin-top:6px}

/* services */
.service{background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);display:flex;flex-direction:column;transition:.25s}
.service:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.service .thumb{height:150px;display:grid;place-items:center;font-size:62px;background:linear-gradient(135deg,#d9f1e6,#b9e4d0)}
.service .body{padding:22px;display:flex;flex-direction:column;gap:8px;flex:1}
.service .body p{color:var(--muted);font-size:15px;flex:1}
.service .more{font-weight:700;margin-top:6px}
.tag{display:inline-block;background:#fff3d6;color:#8a5a00;font-size:12px;font-weight:700;padding:3px 10px;border-radius:99px;align-self:flex-start}

/* process */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.step{position:relative;background:#fff;border-radius:var(--radius);padding:30px 22px 22px;border:1px solid var(--line)}
.step::before{counter-increment:s;content:counter(s);position:absolute;top:-18px;left:22px;width:38px;height:38px;border-radius:50%;background:var(--accent);color:#2b1d00;font-weight:800;display:grid;place-items:center}
.step p{color:var(--muted);font-size:15px;margin-top:6px}

/* pricing table */
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--line)}
table{width:100%;border-collapse:collapse;background:#fff;min-width:560px}
th,td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line);font-size:15px}
th{background:var(--primary);color:#fff;font-weight:700}
tr:last-child td{border-bottom:0}
tr:nth-child(even) td{background:#f8fbf9}
td.price{font-weight:800;color:var(--danger);white-space:nowrap}
.note{background:#fff8e6;border-left:4px solid var(--accent);padding:14px 18px;border-radius:8px;margin-top:20px;font-size:15px}

/* areas */
.areas{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.area{background:#fff;border-radius:var(--radius);padding:24px;border:1px solid var(--line)}
.area h3{color:var(--primary);margin-bottom:8px}
.area p{color:var(--muted);font-size:14.5px;margin-bottom:12px}
.area ul li{padding:5px 0;border-top:1px dashed var(--line);font-size:15px}

/* stats */
.stats{background:var(--primary-dark);color:#fff;padding:46px 0}
.stats .grid{text-align:center}
.stats b{display:block;font-size:40px;color:var(--accent)}
.stats span{color:#cfeadf;font-size:15px}

/* testimonials */
.quote{background:#fff;border-radius:var(--radius);padding:26px;border:1px solid var(--line)}
.quote .stars{color:var(--accent);letter-spacing:2px}
.quote p{margin:10px 0 16px;font-size:15px}
.quote .who{display:flex;gap:12px;align-items:center}
.avatar{width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:700}
.who small{display:block;color:var(--muted)}

/* faq */
.faq{max-width:820px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:12px;margin-bottom:12px;background:#fff;overflow:hidden}
.faq-q{width:100%;text-align:left;background:none;border:0;padding:18px 20px;font:inherit;font-weight:700;cursor:pointer;display:flex;justify-content:space-between;gap:10px;color:var(--ink)}
.faq-q::after{content:"+";font-size:24px;color:var(--primary);line-height:1}
.faq-item.open .faq-q::after{content:"–"}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 20px;color:var(--muted)}
.faq-item.open .faq-a{padding-bottom:18px}

/* cta */
.cta{background:linear-gradient(120deg,var(--primary-dark),var(--primary));color:#fff;text-align:center;padding:60px 0}
.cta h2{color:#fff}
.cta p{color:#d6efe5;margin:12px auto 24px;max-width:620px}

/* page hero + breadcrumbs */
.page-hero{background:linear-gradient(120deg,var(--primary-dark),var(--primary));color:#fff;padding:48px 0}
.page-hero h1{color:#fff;font-size:clamp(26px,4vw,38px)}
.page-hero p{color:#d6efe5;margin-top:10px;max-width:700px}
.crumbs{font-size:14px;color:#bfe3d3;margin-bottom:10px}
.crumbs a{color:#fff}

/* article/content */
.content-grid{display:grid;grid-template-columns:1fr 340px;gap:40px;align-items:start}
.prose h2{font-size:26px;margin:34px 0 12px}
.prose h3{margin:22px 0 8px}
.prose p{margin-bottom:14px;color:#33434d}
.prose ul{list-style:disc;padding-left:22px;margin-bottom:16px}
.prose li{margin-bottom:6px;color:#33434d}
.prose ol{padding-left:22px;margin-bottom:16px}
.sidebar{position:sticky;top:92px;display:grid;gap:20px}
.side-box{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.side-box h3{margin-bottom:10px;color:var(--primary)}
.side-box li a{display:block;padding:8px 0;border-bottom:1px dashed var(--line);font-weight:600;font-size:15px}
.call-box{background:var(--primary);color:#fff;text-align:center}
.call-box h3{color:#fff}
.call-box .num{display:block;font-size:26px;font-weight:800;color:var(--accent);margin:8px 0}

/* blog cards */
.post{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.post .thumb{height:140px;background:linear-gradient(135deg,#cfeede,#a9dcc3);display:grid;place-items:center;font-size:52px}
.post .body{padding:20px;display:flex;flex-direction:column;gap:8px;flex:1}
.post .body p{color:var(--muted);font-size:14.5px;flex:1}
.post small{color:var(--muted)}

/* footer */
.site-footer{background:#0f2a22;color:#b9d3c8;padding:56px 0 0;font-size:15px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
.site-footer h4{color:#fff;margin-bottom:14px;font-size:16px;text-transform:uppercase;letter-spacing:.04em}
.site-footer a{color:#b9d3c8}
.site-footer a:hover{color:var(--accent)}
.site-footer li{padding:5px 0}
.copyright{border-top:1px solid rgba(255,255,255,.1);margin-top:40px;padding:18px 0;text-align:center;font-size:14px}

/* floating buttons */
.float{position:fixed;right:16px;bottom:18px;z-index:60;display:flex;flex-direction:column;gap:12px}
.float a{width:56px;height:56px;border-radius:50%;display:grid;place-items:center;color:#fff;font-size:26px;box-shadow:0 6px 18px rgba(0,0,0,.3)}
.float .call{background:var(--danger);animation:ring 1.8s infinite}
.float .zalo{background:#0068ff;font-size:15px;font-weight:800}
@keyframes ring{0%,100%{transform:scale(1)}50%{transform:scale(1.1)}}

/* toast */
.toast{position:fixed;left:16px;bottom:18px;z-index:60;background:#fff;border-radius:12px;box-shadow:0 8px 28px rgba(0,0,0,.2);padding:12px 16px;font-size:14px;max-width:290px;transform:translateY(140%);transition:.5s;border-left:4px solid var(--primary)}
.toast.show{transform:none}

/* responsive */
@media(max-width:980px){
  .hero-grid,.content-grid{grid-template-columns:1fr}
  .g4,.steps{grid-template-columns:repeat(2,1fr)}
  .g3,.areas{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .sidebar{position:static}
}
@media(max-width:820px){
  .burger{display:block}
  .header-cta .btn{display:none}
  .nav{position:absolute;top:72px;left:0;right:0;background:#fff;box-shadow:0 14px 24px rgba(0,0,0,.12);display:none;max-height:calc(100vh - 72px);overflow:auto}
  .nav.open{display:block}
  .nav>ul{flex-direction:column;align-items:stretch;padding:10px 14px}
  .nav .sub{position:static;display:block;box-shadow:none;padding:0 0 0 14px;min-width:0}
  .topbar .hide-sm{display:none}
}
@media(max-width:600px){
  section{padding:46px 0}
  .g2,.g3,.g4,.steps,.areas,.footer-grid{grid-template-columns:1fr}
  .hero{padding:44px 0 54px}
  .toast{display:none}
}

/* ===== Môi trường Cẩm Khê: palette & conversion layer ===== */
:root{--primary:#0B6E4F;--primary-light:#19A974;--navy:#0B2A4A;--blue:#14507F;--danger:#E63946;--accent:#F5A300;--bg:#F4F8F6;--ink:#1C2A33}
.topbar{background:var(--navy)}
.hero{background:linear-gradient(120deg,#0B2A4A 0%,#0B4A5A 55%,#0B6E4F 100%)}
.site-footer{background:var(--navy)}
.logo-mark{background:linear-gradient(135deg,var(--primary),var(--navy))}
.btn-call{background:var(--danger);color:#fff;animation:callpulse 1.8s infinite}
.btn-call:hover{background:#c92f3c;color:#fff;transform:translateY(-2px)}
@keyframes callpulse{0%{box-shadow:0 0 0 0 rgba(230,57,70,.55)}100%{box-shadow:0 0 0 14px rgba(230,57,70,0)}}
.rating{margin-top:18px;color:var(--accent);font-weight:700}
section.navy{background:var(--navy);color:#fff}
section.navy h2,section.navy h3{color:#fff}section.navy .section-head p{color:#c5d6e6}
.tech{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);padding:26px}
.tech span{font-size:34px}.tech p{color:#c5d6e6;font-size:15px;margin-top:6px}
.grid.g4{grid-template-columns:repeat(4,1fr)}
.branch-chips{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.branch-chip{display:block;background:#fff;border:1px solid var(--line);border-left:5px solid var(--primary);border-radius:var(--radius);padding:16px}
.branch-chip b{display:block;color:var(--navy)}.branch-chip small{color:var(--muted)}
.branch-chip:hover{box-shadow:var(--shadow)}
.warn{background:#fff3f3;border-left:4px solid var(--danger);border-radius:8px;padding:18px 22px;margin-top:26px}
.warn h3{color:var(--danger);margin-bottom:8px}.warn li{list-style:disc;margin-left:20px;padding:2px 0}
.mbar{display:none}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
@media(max-width:980px){.grid.g4{grid-template-columns:repeat(2,1fr)}.branch-chips{grid-template-columns:repeat(2,1fr)}}
@media(max-width:820px){
  .float{display:none}
  body{padding-bottom:calc(64px + env(safe-area-inset-bottom,0px))}
  .mbar{display:grid;grid-template-columns:1.3fr 1fr 1fr;position:fixed;left:0;right:0;bottom:0;z-index:70;background:#fff;box-shadow:0 -4px 18px rgba(0,0,0,.18);padding:8px 8px calc(8px + env(safe-area-inset-bottom,0px));gap:8px}
  .mbar a{display:grid;place-items:center;height:48px;border-radius:12px;font-weight:800;color:#fff;font-size:15px}
  .m-call{background:var(--danger);animation:callpulse 1.8s infinite}.m-zalo{background:#0068ff}.m-book{background:var(--navy)}
  .header-cta .btn-call{display:none}
}
@media(max-width:600px){.grid.g4{grid-template-columns:1fr}.branch-chips{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){.btn-call,.m-call,.pulse{animation:none}}
.service .thumb,.post .thumb{overflow:hidden}
.service .thumb img{width:100%;height:100%;object-fit:cover;display:block}
.gallery{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.gallery figure{grid-column:span 2;margin:0;border-radius:var(--radius);overflow:hidden;background:#fff;border:1px solid var(--line)}
.gallery figure:nth-child(n+4){grid-column:span 3}
.gallery img{width:100%;height:220px;object-fit:cover;display:block}
.gallery figcaption{padding:10px 14px;font-size:14px;color:var(--muted)}
figure.pic{margin:0 0 24px}figure.pic img{width:100%;height:auto;max-height:380px;object-fit:cover;border-radius:var(--radius);display:block}
@media(max-width:820px){.gallery{grid-template-columns:1fr 1fr}.gallery figure,.gallery figure:nth-child(n+4){grid-column:span 1}.gallery img{height:150px}}
.gallery{grid-template-columns:repeat(4,1fr)}
.gallery figure,.gallery figure:nth-child(n+4){grid-column:span 1}
.gallery img{height:170px}
.tech span img{width:100%;height:170px;object-fit:cover;border-radius:10px;display:block}
@media(max-width:820px){.gallery{grid-template-columns:1fr 1fr}.gallery img{height:130px}}
.reviews{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin-top:8px}
.rv-sum{font-weight:800;color:var(--accent);font-size:20px;margin-bottom:12px}
.rv-item{border-top:1px dashed var(--line);padding:12px 0}.rv-item .stars{color:var(--accent);letter-spacing:2px}.rv-item p{margin:4px 0}.rv-item small{color:var(--muted)}
.star-in{display:flex;flex-direction:row-reverse;justify-content:flex-end;gap:4px;margin:8px 0}
.star-in{position:relative}
.star-in input{position:absolute;opacity:0;width:1px;height:1px;padding:0;border:0;margin:0;pointer-events:none}.star-in label{font-size:34px;line-height:1;color:#cfd8d3;cursor:pointer}
.star-in input:checked~label,.star-in label:hover,.star-in label:hover~label{color:var(--accent)}
.star-in input:focus-visible+label{outline:3px solid var(--accent);border-radius:4px}
.reviews textarea{width:100%;min-height:90px}.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.quote{position:relative}
.demo-tag{position:absolute;top:12px;right:12px;background:#fff3d6;color:#8a5a00;font-size:11px;font-weight:700;padding:2px 8px;border-radius:99px}
.rv-item{display:flex;gap:12px;align-items:flex-start}
.rv-av{flex:none;width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:800;overflow:hidden}
.rv-av img{width:100%;height:100%;object-fit:cover;display:block}
.av-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px}.av-row label{font-size:14px;display:grid;gap:4px}
.av-prev{border-radius:50%;object-fit:cover}.av-row small{flex-basis:100%;color:var(--muted)}
.av-row{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;align-items:center}
.av-box{width:64px;height:64px;border-radius:50%;background:#e8f5ef;color:var(--primary);border:2px dashed #9fd3bc;display:grid;place-items:center;overflow:hidden}
.av-box .av-prev{width:100%;height:100%;object-fit:cover;border-radius:0;display:block}
.av-ctl{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.av-file{position:absolute;width:1px;height:1px;opacity:0;overflow:hidden}
.av-row .av-btn{display:inline-flex;align-items:center;gap:8px;background:#fff;color:var(--primary);border:2px solid var(--primary);border-radius:99px;padding:9px 18px;font-weight:700;font-size:15px;cursor:pointer;transition:.2s}
.av-row .av-btn:hover{background:var(--primary);color:#fff}
.av-file:focus-visible+.av-btn{outline:3px solid var(--accent);outline-offset:2px}
.av-rm{background:none;border:0;color:var(--danger);font-weight:700;cursor:pointer;padding:6px 4px;text-decoration:underline}
.av-row small{grid-column:1/-1;color:var(--muted)}
.rv-pop{position:fixed;left:16px;bottom:18px;z-index:65;display:flex;gap:12px;align-items:flex-start;width:min(330px,calc(100% - 32px));background:#fff;border:1px solid var(--line);border-left:5px solid var(--accent);border-radius:14px;box-shadow:0 10px 30px rgba(0,0,0,.22);padding:12px 34px 12px 12px;opacity:0;transform:translateY(16px);pointer-events:none;transition:opacity .35s,transform .35s}
.rv-pop.show{opacity:1;transform:none;pointer-events:auto}
.rv-pop .stars{color:var(--accent);letter-spacing:2px;font-size:14px}
.rv-pop p{margin:2px 0 4px;font-size:14px;line-height:1.4}
.rv-pop small{color:var(--muted);font-size:12.5px}
.rv-pop-x{position:absolute;top:4px;right:8px;background:none;border:0;font-size:22px;line-height:1;color:var(--muted);cursor:pointer}
@media(max-width:820px){.rv-pop{left:10px;bottom:calc(76px + env(safe-area-inset-bottom,0px));width:calc(100% - 20px)}}
@media(prefers-reduced-motion:reduce){.rv-pop{transition:none;transform:none}}
.logo-img{width:48px;height:48px;border-radius:50%;flex:none;display:block;box-shadow:0 2px 8px rgba(0,0,0,.18)}

/* ===== Header v2: gọn, một hàng, có gạch chân hiện đại ===== */
.topbar{font-size:13px;letter-spacing:.01em}
.topbar .container{padding-top:7px;padding-bottom:7px}
.site-header{background:rgba(255,255,255,.94);-webkit-backdrop-filter:saturate(1.4) blur(10px);backdrop-filter:saturate(1.4) blur(10px);box-shadow:0 1px 0 rgba(15,40,70,.08),0 8px 24px rgba(15,40,70,.06)}
.site-header .container{height:76px;gap:20px}
.logo{flex:none;gap:12px;font-size:17px;white-space:nowrap}
.logo small{margin-top:3px;font-size:10px;letter-spacing:.08em}
.logo-img{width:46px;height:46px;box-shadow:0 0 0 3px #fff,0 0 0 4px rgba(15,40,70,.12)}
.nav{flex:1;min-width:0}
.nav>ul{justify-content:center;gap:2px}
.nav a{white-space:nowrap;padding:10px 12px;font-size:14.5px;border-radius:0;background:none!important;position:relative}
.nav>ul>li>a::after{content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;background:var(--primary);transform:scaleX(0);transform-origin:center;transition:transform .22s ease}
.nav>ul>li>a:hover,.nav>ul>li>a.active{color:var(--primary)}
.nav>ul>li>a:hover::after,.nav>ul>li>a.active::after{transform:scaleX(1)}
.nav .has-sub::after{content:"";position:absolute;left:0;right:0;top:100%;height:12px}
.nav .sub{top:calc(100% + 8px);border:1px solid rgba(15,40,70,.08);padding:8px;animation:subin .18s ease}
.nav .sub a{border-radius:8px;padding:10px 12px}
.nav .sub a:hover{background:#e8f5ef!important}
.nav .sub a::after{display:none}
@keyframes subin{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.header-cta{flex:none}
.header-cta .btn{white-space:nowrap;padding:11px 20px;font-size:15px;box-shadow:0 6px 16px rgba(233,60,76,.3)}

/* Thu gọn menu thành nút ☰ sớm hơn để không bị xuống dòng */
@media(max-width:1219px){
  .burger{display:block;margin-left:2px}
  .nav{position:absolute;top:100%;left:0;right:0;flex:none;background:#fff;box-shadow:0 14px 24px rgba(0,0,0,.12);display:none;max-height:calc(100vh - 110px);overflow:auto}
  .nav.open{display:block}
  .nav>ul{flex-direction:column;align-items:stretch;padding:10px 14px;gap:0}
  .nav a{padding:13px 12px;font-size:16px;border-bottom:1px solid #eef2f6}
  .nav>ul>li>a::after{display:none}
  .nav>ul>li>a.active{background:#e8f5ef!important;border-radius:8px}
  .nav .sub{position:static;display:block;box-shadow:none;border:0;padding:0 0 0 14px;min-width:0;animation:none}
  .nav .has-sub::after{display:none}
  .site-header .container{margin-left:auto;margin-right:auto}
  .logo{margin-right:auto}
}
@media(max-width:820px){.site-header .container{height:68px}}
@media(max-width:380px){.logo small{display:none}.logo{font-size:15px}}

.site-header .container{max-width:1320px}
.logo small{letter-spacing:.03em;font-size:9.5px}
.nav a{padding:10px 11px}

@media(min-width:1220px) and (max-width:1439px){.logo small{display:none}.nav a{font-size:14px;padding:10px 9px}.nav>ul>li>a::after{left:9px;right:9px}.site-header .container{gap:12px}.header-cta .btn{padding:11px 16px}}

/* Chặn tràn ngang toàn trang */
html,body{max-width:100%;overflow-x:clip}

/* Menu không bị chen/đè nhau ở màn hình rộng */
@media(min-width:1440px){.site-header .container{max-width:1420px}}
@media(min-width:1220px) and (max-width:1279px){.nav a{padding:10px 6px}.nav>ul>li>a::after{left:6px;right:6px}}