:root{--yellow:#FFC400;--yellow-hi:#FFD84D;--yellow-d:#D99A00;--ink:#15130E;--ink2:#26231B;--cream:#FFFAEB;--paper:#FFF1BF;--red:#D62A1E;--lcd:#FFAF1F;--line:#EADFB5;--muted:#5A5340}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{scroll-behavior:smooth;scroll-padding-top:76px;-webkit-text-size-adjust:100%}
body{margin:0;font-family:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:var(--cream);line-height:1.7;font-size:17px;text-rendering:optimizeLegibility}
::selection{background:var(--yellow);color:var(--ink)}
img,svg{max-width:100%;display:block}
a{color:inherit}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
h1,h2,h3{font-family:"Barlow Condensed","Arial Narrow",Impact,sans-serif;line-height:1.04;margin:0 0 .45em;letter-spacing:.2px}
h1{font-size:clamp(2.6rem,7.2vw,4.9rem);font-weight:800}
h2{font-size:clamp(2rem,4.4vw,3.1rem);font-weight:800}
h2:after{content:"";display:block;width:64px;height:6px;margin-top:12px;border-radius:3px;background:var(--yellow);box-shadow:0 0 0 2px var(--ink)}
.big-cta h2:after,.hero h2:after{background:var(--ink);box-shadow:none}
h3{font-size:1.5rem;font-weight:700}
p{margin:0 0 1em;max-width:68ch}
ul,ol{max-width:68ch}
:focus-visible{outline:3px solid var(--red);outline-offset:3px;border-radius:6px}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:var(--cream);padding:10px 14px;z-index:99}
.skip:focus{left:8px;top:8px}

/* đầu trang */
.top{background:linear-gradient(180deg,#201d15,#15130E);color:var(--cream);position:sticky;top:0;z-index:40;box-shadow:0 3px 16px rgba(0,0,0,.3)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;flex-wrap:nowrap;gap:12px;padding:8px 14px;min-height:62px}
.logo{display:flex;align-items:center;gap:9px;flex:0 0 auto;white-space:nowrap;text-decoration:none;font-family:"Barlow Condensed",sans-serif;font-weight:800;font-size:1.5rem;line-height:1;letter-spacing:.3px}
.logo span{white-space:nowrap}
.lamp-mini{background:linear-gradient(180deg,#FFE066,var(--yellow));color:var(--ink);font-size:.9rem;line-height:1.15;padding:4px 9px 2px;border-radius:7px 7px 3px 3px;border-bottom:4px solid var(--yellow-d);box-shadow:0 0 14px rgba(255,196,0,.45)}
.top nav{display:none;gap:24px;font-size:.96rem}
.top nav a{text-decoration:none;opacity:.88;padding:6px 0;transition:opacity .2s,color .2s}
.top nav a:hover{opacity:1;color:var(--yellow)}
.ico{width:20px;height:20px;flex:none;fill:currentColor}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:52px;padding:12px 26px;border-radius:999px;font-weight:700;text-decoration:none;border:3px solid var(--ink);font-size:1.02rem;line-height:1.1;cursor:pointer;box-shadow:0 5px 0 var(--ink);transition:transform .15s ease,box-shadow .15s ease,background-color .2s ease,color .2s ease}
.btn:hover{transform:translateY(-2px);box-shadow:0 7px 0 var(--ink)}
.btn:active{transform:translateY(3px);box-shadow:0 2px 0 var(--ink)}
.btn-call{background:var(--ink);color:var(--yellow)}
.btn-call:hover{background:#000}
.btn-zalo{background:#fff;color:var(--ink)}
.btn-zalo:hover{background:var(--paper)}
.btn-head{flex:0 0 auto;white-space:nowrap;min-height:44px;padding:8px 18px;font-size:1rem;background:var(--yellow);color:var(--ink);border-color:var(--yellow);box-shadow:0 3px 0 var(--yellow-d)}
.btn-head:hover{background:var(--yellow-hi);border-color:var(--yellow-hi);box-shadow:0 5px 0 var(--yellow-d)}
.btn-head:active{box-shadow:0 1px 0 var(--yellow-d)}
.btn-head .num{display:none}
.checker{height:20px;background:repeating-conic-gradient(var(--ink) 0 25%,var(--yellow) 0 50%) 0 0/20px 20px}

/* hero */
.hero{position:relative;overflow:hidden;background:radial-gradient(900px 420px at 10% -10%,rgba(255,255,255,.6),transparent 60%),radial-gradient(700px 420px at 100% 100%,rgba(217,154,0,.55),transparent 60%),linear-gradient(180deg,#FFD62E 0%,#FFC400 58%,#F2B600 100%)}
.hero:before{content:"";position:absolute;inset:0;opacity:.22;mix-blend-mode:multiply;pointer-events:none;background-image:url("data:image/svg+xml,%3Csvg%20xmlns%3D%27http%3A//www.w3.org/2000/svg%27%20width%3D%27180%27%20height%3D%27180%27%3E%3Cfilter%20id%3D%27n%27%3E%3CfeTurbulence%20type%3D%27fractalNoise%27%20baseFrequency%3D%27.85%27%20numOctaves%3D%272%27%20stitchTiles%3D%27stitch%27/%3E%3CfeColorMatrix%20values%3D%270%200%200%200%200%200%200%200%200%200%200%200%200%200%200%200%200%200%20.5%200%27/%3E%3C/filter%3E%3Crect%20width%3D%27100%25%27%20height%3D%27100%25%27%20filter%3D%27url%28%23n%29%27/%3E%3C/svg%3E")}
.hero .wrap{position:relative;z-index:2;display:grid;gap:26px;padding-top:40px;padding-bottom:0}
.lamp{display:inline-block;position:relative;margin-bottom:22px}
.lamp b{display:block;background:linear-gradient(180deg,#fff,#F1E9C8);color:var(--ink);border:4px solid var(--ink);border-radius:12px 12px 5px 5px;padding:2px 24px 0;font-family:"Barlow Condensed",sans-serif;font-size:1.75rem;font-weight:800;letter-spacing:3px;animation:lampOn 1.2s .25s ease-out both}
.lamp:after{content:"";display:block;width:58%;height:10px;margin:0 auto;background:var(--ink);border-radius:0 0 6px 6px}
@keyframes lampOn{0%{background:#CFC7A3;box-shadow:none}60%{background:#CFC7A3}100%{background:linear-gradient(180deg,#fff,#F1E9C8);box-shadow:0 0 32px 8px rgba(255,252,230,.9)}}
.lead{font-size:1.14rem;max-width:56ch}
.meter{display:inline-block;background:linear-gradient(180deg,#0E0D09,#1E1B13);color:var(--lcd);border-radius:16px;padding:12px 24px 14px;border:3px solid #3B362A;margin:6px 0 22px;box-shadow:inset 0 2px 12px rgba(0,0,0,.85),0 6px 0 #0A0906,0 16px 26px -10px rgba(0,0,0,.55)}
.meter small{display:block;font-size:.82rem;color:#CDAA5E;line-height:1.5}
.meter a{font-family:"Share Tech Mono",ui-monospace,Menlo,Consolas,monospace;font-size:clamp(1.9rem,6.4vw,3rem);letter-spacing:2px;text-decoration:none;color:var(--lcd);text-shadow:0 0 8px rgba(255,175,31,.7),0 0 24px rgba(255,175,31,.3);white-space:nowrap}
.cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px}
.hero-car{align-self:end;width:100%;max-width:600px;margin:0 auto -28px;position:relative;z-index:3;animation:drive 1.5s cubic-bezier(.16,.84,.3,1) .1s both}
@keyframes drive{from{transform:translateX(-115%)}to{transform:none}}
.wheel{transform-box:fill-box;transform-origin:center;animation:spin 1.5s cubic-bezier(.16,.84,.3,1) .1s both}
@keyframes spin{from{transform:rotate(-960deg)}to{transform:none}}
.asphalt{position:relative;z-index:1;height:52px;background:linear-gradient(180deg,#312D23,#15130E);border-top:5px solid #0A0906}
.asphalt:before{content:"";position:absolute;left:0;right:0;top:24px;height:5px;background:repeating-linear-gradient(90deg,var(--yellow) 0 40px,transparent 40px 80px);animation:lane 1.6s linear 2}
@keyframes lane{to{background-position:80px 0}}

/* các khối nội dung */
section{padding:64px 0}
.alt{background:repeating-linear-gradient(135deg,rgba(21,19,14,.028) 0 12px,transparent 12px 24px),linear-gradient(180deg,#FFF4C9,#FFEDA9)}
.crumbs{font-size:.92rem;padding:16px 0 8px;color:var(--muted)}
.crumbs a{text-decoration:none;border-bottom:1px solid var(--line);transition:color .2s,border-color .2s}
.crumbs a:hover{color:var(--ink);border-color:var(--yellow-d)}
.crumbs span{margin:0 7px}

.routes{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));margin:26px 0 0;padding:0;list-style:none;max-width:none}
.routes a{display:block;height:100%;text-decoration:none;background:#fff;border:2px solid var(--ink);border-left:12px solid var(--yellow);border-radius:12px;padding:16px 18px 15px;box-shadow:0 4px 0 var(--ink);transition:transform .18s ease,box-shadow .18s ease,border-left-color .18s ease}
.routes a:hover{transform:translateY(-3px);box-shadow:0 8px 0 var(--ink);border-left-color:var(--ink)}
.routes a:active{transform:translateY(1px);box-shadow:0 2px 0 var(--ink)}
.routes strong{display:block;font-family:"Barlow Condensed",sans-serif;font-size:1.5rem;line-height:1.12;margin-bottom:6px}
.routes span{font-size:.95rem;color:var(--muted);line-height:1.55;display:block}

.points{display:grid;gap:28px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));margin-top:30px}
.points h3{border-top:6px solid var(--yellow);padding-top:14px}
.points p{margin:0}

.steps{counter-reset:s;list-style:none;margin:28px 0 0;padding:0;display:grid;gap:22px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));max-width:none}
.steps li{counter-increment:s;position:relative;padding-left:66px;min-height:50px}
.steps li:before{content:counter(s);position:absolute;left:0;top:-2px;width:50px;height:50px;border-radius:50%;background:linear-gradient(180deg,var(--yellow-hi),var(--yellow));color:var(--ink);font-family:"Barlow Condensed",sans-serif;font-weight:800;font-size:1.8rem;display:grid;place-items:center;border:3px solid var(--ink);box-shadow:0 3px 0 var(--ink)}
.steps b{display:block}

.area-group{margin-top:34px}
.area-group h3{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 12px;border-bottom:3px solid var(--ink);padding-bottom:8px}
.area-group h3 small{font-family:"Be Vietnam Pro",sans-serif;font-size:.86rem;font-weight:500;color:var(--muted)}
.area-list{list-style:none;margin:14px 0 0;padding:0;columns:3 210px;column-gap:24px;max-width:none}
.area-list li{break-inside:avoid;margin-bottom:4px}
.area-list a{text-decoration:none;display:inline-block;padding:7px 2px;min-height:40px;border-bottom:2px solid var(--yellow);transition:background-color .15s,padding .15s}
.area-list a:hover{background:var(--yellow);padding-left:8px;padding-right:8px;border-radius:6px 6px 0 0}

.oldnames{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:0 0 1em;max-width:none}
.oldnames li{background:#fff;border:2px solid var(--ink);border-radius:999px;padding:3px 15px;font-size:.93rem}
.note{border-left:8px solid var(--yellow);background:linear-gradient(90deg,var(--paper),#FFF8DC);border-radius:0 12px 12px 0;padding:16px 20px;margin:22px 0;max-width:70ch}

details{border-top:2px solid var(--ink)}
details:last-of-type{border-bottom:2px solid var(--ink)}
summary{min-height:58px;padding:14px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;font-weight:700;font-size:1.06rem;line-height:1.4;cursor:pointer;list-style:none;transition:color .2s}
summary:hover{color:var(--yellow-d)}
summary::-webkit-details-marker{display:none}
summary:after{content:"+";flex:none;width:34px;height:34px;border-radius:50%;background:var(--yellow);border:2px solid var(--ink);display:grid;place-items:center;font-family:"Barlow Condensed",sans-serif;font-size:1.6rem;line-height:1;transition:transform .25s ease,background-color .2s}
details[open] summary:after{content:"–";transform:rotate(180deg);background:var(--ink);color:var(--yellow)}
details p{margin:0 0 18px;animation:fadeIn .3s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

.big-cta{position:relative;padding-top:84px;background:radial-gradient(700px 300px at 0 0,rgba(255,255,255,.5),transparent 60%),linear-gradient(180deg,#FFD62E,#FFC400)}
.big-cta:before{content:"";position:absolute;left:0;right:0;top:0;height:20px;background:repeating-conic-gradient(var(--ink) 0 25%,var(--yellow) 0 50%) 0 0/20px 20px}
.big-cta .meter{margin-bottom:20px}

/* chân trang */
footer{position:relative;background:linear-gradient(180deg,#1d1a13,#100E0A);color:#DCD5BB;padding:48px 0 120px;font-size:.96rem}
footer:before{content:"";position:absolute;left:0;right:0;top:0;height:10px;background:repeating-conic-gradient(var(--yellow) 0 25%,var(--ink) 0 50%) 0 0/10px 10px}
footer h3{color:var(--cream);font-size:1.3rem}
footer a{color:var(--cream);text-decoration-color:rgba(255,196,0,.5);text-underline-offset:3px;transition:color .2s}
footer a:hover{color:var(--yellow)}
.fgrid{display:grid;gap:30px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
footer ul{list-style:none;margin:0;padding:0;max-width:none}
footer li{margin-bottom:8px}

.callbar{position:fixed;left:0;right:0;bottom:0;display:flex;gap:10px;padding:10px 12px calc(10px + env(safe-area-inset-bottom));z-index:50;background:rgba(21,19,14,.96);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-top:3px solid var(--yellow)}
.callbar a{flex:1;min-height:50px;display:flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;font-weight:700;text-decoration:none;white-space:nowrap;transition:transform .15s ease}
.callbar a:first-child{background:var(--yellow);color:var(--ink)}
.callbar a+a{background:#fff;color:var(--ink)}
.callbar a:active{transform:scale(.97)}

.legal h2{font-size:1.7rem;margin:1.5em 0 .4em}
.legal h2:after{display:none}
.legal ul{padding-left:1.2em;margin:0 0 1em}
.legal li{margin-bottom:.3em}

/* hiệu ứng xuất hiện khi cuộn: chỉ bật khi có JavaScript */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease;transition-delay:var(--d,0ms)}
.js .reveal.in{opacity:1;transform:none}

@media(min-width:480px){
  .btn-head .num{display:inline}
  .btn-head .short{display:none}
}
@media(min-width:760px){
  .top .wrap{padding:8px 20px}
  .logo{font-size:1.65rem}
  .top nav{display:flex}
  .hero .wrap{grid-template-columns:1.1fr .9fr;align-items:end}
  .hero-text{padding-bottom:44px}
  .hero-car{margin:0 0 -28px auto}
  .callbar{display:none}
  footer{padding-bottom:48px}
}
@media(max-width:380px){
  .top .wrap{gap:8px;padding:8px 10px}
  .logo{font-size:1.2rem;gap:7px}
  .lamp-mini{font-size:.78rem;padding:3px 7px 1px}
  .btn-head{padding:8px 14px;font-size:.95rem;gap:7px}
  .btn{padding:12px 20px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*:before,*:after{animation:none!important;transition:none!important}
  .lamp b{background:linear-gradient(180deg,#fff,#F1E9C8);box-shadow:0 0 22px 5px rgba(255,252,230,.85)}
  .js .reveal{opacity:1;transform:none}
}