@media(max-width:899px){.header{-webkit-backdrop-filter:none!important;backdrop-filter:none!important}}
*,*::before,*::after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--font);font-size:16px;line-height:1.6;color:var(--ink);background:var(--bg);overflow-x:hidden}
img{max-width:100%;height:auto;display:block}a{color:inherit}button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0 0 .5em;line-height:1.2;font-family:var(--head)}p{margin:0 0 1em}ul,ol{margin:0;padding:0}
svg{width:1em;height:1em;fill:currentColor;flex:0 0 auto}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px;top:8px;z-index:200;background:#000;color:#fff;padding:8px 12px}.skip:focus{left:8px}
.vh{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
:focus-visible{outline:3px solid var(--focus,#2563eb);outline-offset:2px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:10px 20px;border-radius:var(--r-btn,10px);border:2px solid transparent;font-weight:600;text-decoration:none;cursor:pointer;line-height:1.2;text-align:center;transition:transform .15s,background .15s}
.btn:active{transform:translateY(1px)}.btn--sm{min-height:40px;padding:8px 14px;font-size:14px}.btn--block{width:100%}
.burger{display:none;width:44px;height:44px;border:0;background:transparent;cursor:pointer;padding:10px;flex-direction:column;justify-content:center;gap:5px}
.burger span{display:block;height:2px;background:currentColor;border-radius:2px;transition:.2s}
body.menu-open .burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}body.menu-open .burger span:nth-child(2){opacity:0}body.menu-open .burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.field{display:flex;flex-direction:column;gap:6px;min-width:0}.field label,.field .lbl{font-weight:600;font-size:14px}
.field input,.field select,.field textarea{width:100%;min-height:46px;padding:10px 12px;border:1.5px solid var(--line-strong,#c8cdd6);border-radius:var(--r-in,8px);background:#fff;color:#16181d}
.field textarea{min-height:90px;resize:vertical}.field [aria-invalid=true]{border-color:#c62828}.err{color:#c62828;font-size:13px;min-height:0}
.form__ok{padding:12px 14px;border-radius:8px;background:#e8f5e9;color:#1b5e20;font-weight:500}.form__privacy{font-size:13px;color:var(--muted);margin:0}
.float{position:fixed;right:14px;bottom:18px;z-index:70;display:flex;flex-direction:column;gap:10px}
.float__btn{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;box-shadow:0 6px 18px rgba(0,0,0,.2);color:#fff}
.float__btn--zalo{background:#0068ff}.float__btn--zalo svg{width:34px;height:34px}.float__btn--call{background:#16a34a}.float__btn--call svg{width:24px;height:24px}
.demo-badge{position:fixed;left:12px;bottom:12px;z-index:60;font-size:12px;background:#111;color:#fff;padding:6px 10px;border-radius:6px;text-decoration:none}
.social{display:flex;gap:8px;margin-top:14px}.social a{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;border:1px solid currentColor;opacity:.85}.social svg{width:18px;height:18px}
details summary{cursor:pointer;list-style:none}details summary::-webkit-details-marker{display:none}
.tbl-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;max-width:100%}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
:root{--ink:#0c1e3a;--bg:#ffffff;--sky:#e8f4fb;--pri:#0369a1;--pri-d:#075985;--yel:#facc15;--muted:#4f6075;--line:#dde7ef;--line-strong:#bccbd8;--font:"Lexend",system-ui,sans-serif;--head:"Lexend",system-ui,sans-serif;--r-btn:14px;--r-in:12px;--focus:#0369a1}
body{font-weight:300}b,strong,th{font-weight:600}h1,h2,h3{font-weight:600;letter-spacing:-.015em}
.btn--pri{background:var(--pri);color:#fff}.btn--pri:hover{background:var(--pri-d)}.btn--yel{background:var(--yel);color:var(--ink)}.btn--yel:hover{background:#eab308}.btn--line{border-color:var(--line-strong);color:var(--ink);background:#fff}.btn--line:hover{border-color:var(--pri);color:var(--pri)}
.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}.header__inner{display:flex;align-items:center;gap:18px;min-height:70px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:600;font-size:19px;line-height:1.1}.logo small{display:block;font-size:12px;font-weight:400;color:var(--muted)}.logo__mark{width:42px;height:42px;border-radius:14px;background:var(--pri);color:var(--yel);display:grid;place-items:center}.logo__mark svg{width:26px;height:26px}
.nav{margin-left:auto;display:flex;align-items:center;gap:22px}.nav ul{display:flex;gap:22px;list-style:none}.nav a{text-decoration:none;font-weight:400;font-size:15px}.nav ul a:hover{color:var(--pri)}
.header__actions{display:flex;gap:8px;align-items:center}.hdr-tel{background:var(--yel);color:var(--ink)}.hdr-tel svg{width:16px;height:16px}
.hero{background:linear-gradient(180deg,var(--sky),#fff);position:relative;overflow:hidden}.hero__grid{display:grid;gap:28px;padding:40px 0 56px;position:relative;z-index:1}
.pill{display:inline-flex;gap:8px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 14px 6px 6px;font-size:14px;margin-bottom:16px}.pill b{background:var(--yel);border-radius:999px;padding:2px 10px;font-weight:600}
.hero h1{font-size:clamp(34px,5.4vw,60px);line-height:1.08;margin-bottom:16px}.hero h1 span{color:var(--pri)}.hero__lead{font-size:18px;color:var(--muted);max-width:540px}
.hero__img{position:relative}.hero__img img{width:100%;border-radius:28px;aspect-ratio:4/3.2;object-fit:cover}.hero__img .tech{position:absolute;right:14px;top:14px;background:#fff;border-radius:16px;padding:10px 14px;font-size:13px;box-shadow:0 10px 30px rgba(12,30,58,.15);display:flex;gap:10px;align-items:center}.tech i{width:10px;height:10px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 4px #dcfce7}
.book{background:#fff;border-radius:24px;box-shadow:0 20px 50px rgba(12,30,58,.12);padding:20px;display:grid;gap:12px;border:1px solid var(--line);margin-top:24px}.book h2{font-size:20px;margin:0}
.book .row2,.form .row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.qty{display:flex;align-items:center;border:1.5px solid var(--line-strong);border-radius:12px;overflow:hidden;min-height:46px}.qty button{width:46px;height:46px;border:0;background:var(--sky);font-size:20px;cursor:pointer;color:var(--ink)}.qty input{border:0!important;text-align:center;min-height:0!important;border-radius:0!important;padding:0!important}
.est{display:flex;justify-content:space-between;align-items:center;gap:10px;background:var(--ink);color:#fff;border-radius:14px;padding:12px 16px}.est span{font-size:13px;color:#b9c7d8}.est b{font-size:24px;color:var(--yel)}
.slots{display:flex;flex-wrap:wrap;gap:6px;border:0;padding:0;margin:0}.slots legend{font-weight:600;font-size:14px;margin-bottom:6px}.slots label{position:relative}.slots input{position:absolute;opacity:0}.slots span{display:inline-block;border:1.5px solid var(--line-strong);border-radius:10px;padding:7px 11px;font-size:13px;cursor:pointer}.slots input:checked+span{background:var(--pri);border-color:var(--pri);color:#fff}.slots input:focus-visible+span{outline:3px solid var(--pri);outline-offset:2px}
.strip{background:var(--ink);color:#fff}.strip ul{display:grid;grid-template-columns:1fr 1fr;gap:16px;list-style:none;padding:22px 0}.strip li{display:flex;gap:10px;align-items:center;font-size:14px;color:#c9d6e5}.strip b{color:#fff;display:block;font-size:16px}.strip svg{width:28px;height:28px;color:var(--yel)}
.section{padding:76px 0}.section--sky{background:var(--sky)}.sec-head{max-width:640px;margin:0 auto 34px;text-align:center}.sec-head h2{font-size:clamp(28px,4vw,42px)}.sec-head p{color:var(--muted)}.over{display:inline-block;color:var(--pri);font-weight:600;font-size:14px;background:var(--sky);border-radius:999px;padding:4px 12px;margin-bottom:10px}
.section--sky .over{background:#fff}
.svc{display:grid;gap:16px;grid-template-columns:1fr}.sv{position:relative;background:#fff;border:1px solid var(--line);border-radius:22px;overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .2s,transform .2s}.sv:hover{box-shadow:0 16px 40px rgba(12,30,58,.1);transform:translateY(-3px)}
.sv img{aspect-ratio:16/10;object-fit:cover;width:100%}.sv__b{padding:16px 18px 18px;display:flex;flex-direction:column;gap:8px;flex:1}.sv h3{font-size:19px;margin:0}.sv h3 a{text-decoration:none}.sv h3 a::after{content:"";position:absolute;inset:0}.sv p{font-size:14px;color:var(--muted);margin:0}
.sv .from{margin-top:auto;display:flex;justify-content:space-between;align-items:center;padding-top:10px;border-top:1px solid var(--line);font-size:14px}.sv .from b{color:var(--pri);font-size:18px}
.sv--cta{background:var(--pri);color:#fff;justify-content:center;padding:26px;gap:12px}.sv--cta h3{font-size:22px}.sv--cta p{color:#d6ebf7}
.tabs{display:flex;gap:6px;background:#fff;border-radius:16px;padding:6px;width:max-content;max-width:100%;overflow-x:auto;margin:0 auto 22px;border:1px solid var(--line)}.tabs button{border:0;background:none;border-radius:12px;padding:10px 18px;font-weight:500;cursor:pointer;white-space:nowrap;min-height:44px}.tabs button[aria-selected=true]{background:var(--ink);color:#fff}
.ptbl{width:100%;border-collapse:collapse;background:#fff;border-radius:18px;overflow:hidden;font-size:15px}.ptbl th,.ptbl td{text-align:left;padding:14px 18px;border-bottom:1px solid var(--line)}.ptbl td:last-child{text-align:right;font-weight:600;color:var(--pri);white-space:nowrap}.ptbl caption{caption-side:bottom;font-size:13px;color:var(--muted);padding-top:10px;text-align:left}
.panel{max-width:860px;margin:0 auto}
.doc{display:grid;gap:22px;align-items:start}.syms{display:grid;grid-template-columns:1fr 1fr;gap:10px}.syms button{text-align:left;border:1.5px solid var(--line-strong);background:#fff;border-radius:16px;padding:14px;font-weight:500;cursor:pointer;min-height:56px}.syms button[aria-pressed=true]{border-color:var(--pri);background:var(--sky);box-shadow:inset 0 0 0 1px var(--pri)}
.ans{background:var(--ink);color:#fff;border-radius:22px;padding:24px;min-height:200px;display:flex;flex-direction:column;gap:10px}.ans h3{color:var(--yel);font-size:22px;margin:0}.ans p{color:#d0dbe8;margin:0}.ans a{align-self:flex-start}
.flow{display:grid;gap:22px;align-items:center}.steps{list-style:none;display:grid;gap:14px;counter-reset:s}.steps li{display:grid;grid-template-columns:48px 1fr;gap:14px;counter-increment:s}.steps li::before{content:counter(s);width:48px;height:48px;border-radius:16px;background:var(--yel);display:grid;place-items:center;font-weight:600;font-size:18px}.steps h3{font-size:18px;margin:2px 0 4px}.steps p{margin:0;color:var(--muted);font-size:15px}
.techcard{background:#fff;border-radius:26px;overflow:hidden;border:1px solid var(--line);display:grid;grid-template-columns:150px 1fr;align-items:center}.techcard img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/5}.techcard div{padding:18px}.techcard b{font-size:18px;display:block}.techcard ul{list-style:none;display:grid;gap:6px;margin-top:10px;font-size:14px}.techcard li{display:flex;gap:8px}.techcard svg{color:#16a34a;margin-top:3px}
.area{display:grid;gap:24px;align-items:center}.area img{border-radius:26px;width:100%}.dist{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:16px 0}.dist li{background:#fff;border:1px solid var(--line-strong);border-radius:999px;padding:6px 14px;font-size:14px}
.revs{display:grid;gap:16px}.rv{background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px;margin:0}.rv .st{color:#f59e0b;letter-spacing:2px}.rv p{margin:8px 0 12px}.rv cite{font-style:normal;font-size:14px;color:var(--muted)}
.faq{max-width:820px;margin:0 auto;display:grid;gap:10px}.faq details{background:#fff;border:1px solid var(--line);border-radius:16px;padding:0 20px}.faq summary{padding:16px 30px 16px 0;font-weight:500;position:relative}.faq summary::after{content:"+";position:absolute;right:0;top:11px;font-size:24px;color:var(--pri)}.faq details[open] summary::after{content:"−"}.faq details p{margin:0 0 16px;color:var(--muted)}
.form{display:grid;gap:12px}.chk{display:flex;gap:8px;align-items:flex-start;font-size:14px}.chk input{margin-top:4px;accent-color:var(--pri)}
.footer{background:var(--ink);color:#b9c7d8;padding:56px 0 0;font-size:15px}.footer .logo{color:#fff}.footer .logo small{color:#9fb3c8}.footer__grid{display:grid;gap:28px}.footer__title{font-size:16px;color:#fff;font-weight:600}.footer__links{list-style:none;display:grid;gap:8px}.footer__links a{text-decoration:none}.footer__links a:hover{color:var(--yel)}
.footer__bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:18px;padding-bottom:90px;font-size:13px}.footer__bottom p{margin:0}
/* detail */
.dh{background:var(--sky);padding:20px 0 40px}.bc{font-size:14px;display:flex;gap:6px;flex-wrap:wrap;margin-bottom:18px}.bc a{color:var(--pri)}
.dh__grid{display:grid;gap:24px;align-items:center}.dh__grid>*{min-width:0}.dh h1{font-size:clamp(32px,5vw,52px);margin-bottom:10px}.dh img{border-radius:24px;width:100%;aspect-ratio:4/3;object-fit:cover}
.chips{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:16px 0}.chips li{background:#fff;border-radius:999px;padding:7px 14px;font-size:14px;border:1px solid var(--line)}.chips b{color:var(--pri)}
.dgrid{display:grid;gap:26px;padding:50px 0}.dgrid>*{min-width:0}.box{background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px}.box+.box{margin-top:20px}.box h2{font-size:22px}
.ticks{list-style:none;display:grid;gap:10px}.ticks li{display:flex;gap:10px}.ticks svg{color:var(--pri);width:20px;height:20px;margin-top:3px}
.others{display:grid;grid-template-columns:1fr 1fr;gap:12px;list-style:none}.others a{display:block;border:1px solid var(--line);border-radius:16px;padding:14px;text-decoration:none;font-weight:500;background:#fff}.others a:hover{border-color:var(--pri)}.others small{display:block;color:var(--pri);font-weight:600}
@media(min-width:640px){.svc{grid-template-columns:repeat(2,1fr)}.strip ul{grid-template-columns:repeat(4,1fr)}.revs{grid-template-columns:repeat(3,1fr)}.syms{grid-template-columns:repeat(3,1fr)}.others{grid-template-columns:repeat(3,1fr)}}
@media(min-width:900px){.hero__grid{grid-template-columns:1fr 1fr;align-items:center;gap:48px;padding:56px 0 70px}.svc{grid-template-columns:repeat(4,1fr)}.doc{grid-template-columns:1.2fr 1fr}.flow{grid-template-columns:1fr 1fr;gap:56px}.area{grid-template-columns:1fr 1fr;gap:48px}
.footer__grid{grid-template-columns:1.4fr 1fr 1fr}.dh__grid{grid-template-columns:1.1fr 1fr;gap:48px}.dgrid{grid-template-columns:1.3fr 1fr;gap:40px}.dgrid aside{position:sticky;top:90px;align-self:start}}
@media(max-width:899px){.burger{display:flex}.nav{position:fixed;inset:0 0 0 auto;width:min(320px,86vw);background:#fff;flex-direction:column;align-items:stretch;padding:90px 24px 24px;gap:18px;transform:translateX(100%);transition:transform .25s;box-shadow:-10px 0 40px rgba(0,0,0,.15);z-index:60}
body.menu-open .nav{transform:none}.nav ul{flex-direction:column;gap:4px}.nav ul a{display:block;padding:12px 0;font-size:18px;border-bottom:1px solid var(--line)}.burger{position:relative;z-index:61}.hdr-tel{display:none}}
@media(max-width:480px){.container{padding:0 16px}.book{padding:16px}.techcard{grid-template-columns:110px 1fr}.syms{grid-template-columns:1fr 1fr}.syms button{padding:12px;font-size:14px}.ptbl th,.ptbl td{padding:12px}.book .row2.st{grid-template-columns:1fr}}