:root{
  --ink:#0e1b2e;
  --ink-2:#1b2d47;
  --paper:#f2f6f7;
  --foam:#dcedf0;
  --sea:#0b7f94;
  --cyan:#22d3ee;
  --sand:#efe6d2;
  --muted:#4d6275;
  --line:#d3e0e4;
  --white:#fff;
  --display:Unbounded,"Arial Black",system-ui,sans-serif;
  --body:Onest,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font:400 1.0625rem/1.6 var(--body);color:var(--ink);background:var(--paper)}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3{margin:0;font-family:var(--display);font-weight:600;letter-spacing:-.015em}
p{margin:0}
.wrap{width:min(1180px,100% - 40px);margin-inline:auto}
:focus-visible{outline:3px solid var(--sea);outline-offset:3px;border-radius:6px}
.dark :focus-visible{outline-color:var(--cyan)}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:#fff;padding:10px 16px;border-radius:8px;z-index:100}
.skip:focus{left:8px}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(242,246,247,.92);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;gap:24px;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;font:600 1.2rem var(--display);text-decoration:none;letter-spacing:-.02em}
.brand svg{width:30px;height:30px;flex:none}
.nav{display:flex;gap:26px;margin-left:auto}
.nav a{text-decoration:none;font-weight:500;color:var(--muted);padding:6px 0;border-bottom:2px solid transparent}
.nav a:hover{color:var(--ink)}
.nav a[aria-current=page]{color:var(--ink);border-bottom-color:var(--cyan)}
.nav .only-mobile{display:none}
.actions{display:flex;gap:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:999px;font:600 .975rem var(--body);text-decoration:none;border:1.5px solid transparent;cursor:pointer;transition:background .15s,border-color .15s,color .15s}
.btn-primary{background:var(--cyan);color:var(--ink)}
.btn-primary:hover{background:#6ae6f7}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:#fff}
.dark .btn-ghost{border-color:rgba(255,255,255,.55);color:#fff}
.dark .btn-ghost:hover{background:#fff;color:var(--ink)}
.btn-lg{min-height:52px;padding:0 28px;font-size:1.05rem}
.menu-btn{display:none;min-height:44px;padding:0 16px;border-radius:999px;border:1.5px solid var(--ink);background:transparent;font:600 .95rem var(--body);color:var(--ink);cursor:pointer}

/* language switch */
html[lang=vi]{--body:"Be Vietnam Pro",Onest,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
.langs{display:flex;gap:2px;border:1.5px solid var(--line);border-radius:999px;padding:3px;background:#fff}
.langs a{padding:5px 11px;border-radius:999px;font-size:.82rem;font-weight:600;text-decoration:none;color:var(--muted);border-bottom:0}
.langs a:hover{color:var(--ink)}
.langs a[aria-current=true]{background:var(--ink);color:#fff}
.nav .nav-langs{display:none}
.nav .nav-langs a{padding:6px 14px;border-bottom:0}

/* hero */
.hero{padding:76px 0 0}
.hero-top{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,4fr);gap:56px;align-items:center}
.hero h1{font-size:clamp(1.9rem,4.1vw,3.3rem);line-height:1.1}
.hero-side p{color:var(--muted);font-size:1.125rem;max-width:36ch}
.hero-side .row{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.stage{margin-top:56px;padding-bottom:64px;background:linear-gradient(to bottom,var(--paper) 0,var(--paper) 38%,var(--ink) 38%,var(--ink) 100%)}
.frame{background:#0a1424;border:1px solid rgba(255,255,255,.1);border-radius:16px;overflow:hidden;box-shadow:0 40px 80px -30px rgba(7,16,32,.65)}
.frame-bar{display:flex;align-items:center;gap:8px;padding:11px 16px;background:#13233b;border-bottom:1px solid rgba(255,255,255,.07)}
.frame-bar i{width:10px;height:10px;border-radius:50%;background:#34506f}
.frame-bar span{margin-left:12px;font-size:.78rem;color:#8fb0c6;background:#0b1829;border-radius:999px;padding:3px 16px}
.frame img{width:100%}
.stage .frame{animation:rise .9s cubic-bezier(.2,.7,.2,1) both}
@keyframes rise{from{opacity:0;transform:translateY(28px)}to{opacity:1;transform:none}}
.types{display:flex;flex-wrap:wrap;gap:12px 40px;margin-top:40px;color:#cfe3ec;font-weight:500}
.types b{font-weight:600;color:#fff}

.bars{list-style:none;margin:26px 0 0;padding:0;display:grid;gap:8px}
.bars li{width:var(--w);margin-left:var(--x);min-height:36px;display:flex;align-items:center;padding:0 16px;border-radius:999px;font-weight:600;font-size:.92rem;white-space:nowrap;background:#7fe3a4;color:var(--ink)}
.bars li:nth-child(even){background:var(--cyan)}
@media (max-width:980px){.bars li{width:auto;min-width:var(--w);justify-self:start}.hero-side p{max-width:48ch}}

/* sections */
section{scroll-margin-top:80px}
.section{padding:104px 0 0}
.section-head{max-width:720px;margin-bottom:48px}
.section-head h2{font-size:clamp(1.5rem,2.8vw,2.2rem);line-height:1.15}
.section-head p{margin-top:16px;color:var(--muted);font-size:1.125rem}
.feature{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:64px;align-items:center;padding:56px 0}
.feature+.feature{border-top:1px solid var(--line)}
.feature.flip{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.feature.flip .f-text{order:2}
.f-text h3{font-size:clamp(1.25rem,2.2vw,1.65rem);line-height:1.2}
.f-text>p{margin-top:16px;color:var(--muted)}
.ticks{list-style:none;margin:22px 0 0;padding:0;display:grid;gap:10px}
.ticks li{position:relative;padding-left:28px}
.ticks li::before{content:"";position:absolute;left:0;top:.5em;width:14px;height:8px;border-left:2.5px solid var(--sea);border-bottom:2.5px solid var(--sea);transform:rotate(-45deg) scale(.9);transform-origin:center}
.shot{border-radius:14px;overflow:hidden;background:#0a1424;box-shadow:0 30px 60px -28px rgba(14,27,46,.55);border:1px solid rgba(14,27,46,.12)}
.zoom{aspect-ratio:16/10}
.zoom img{width:205%;max-width:none;margin:-1% 0 0 -2%}
.duo{display:grid;gap:16px}
.duo .shot:nth-child(2){margin-left:8%}
.counters{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#264063;border-radius:14px;overflow:hidden;box-shadow:0 30px 60px -28px rgba(14,27,46,.55)}
.counters div{background:var(--ink);padding:28px 12px;text-align:center;color:#9bb7c9;font-size:.95rem}
.counters strong{display:block;font:600 2.6rem/1 var(--display);margin-bottom:8px;color:#fff}
.counters .g strong{color:#7fe3a4}
.counters .r strong{color:#ff7b8a}
.counters-note{margin-top:14px;font-size:.9rem;color:var(--muted)}
.phone-wrap{display:flex;justify-content:center;background:var(--foam);border-radius:24px;padding:48px 24px 0;overflow:hidden}
.phone{width:min(300px,100%);border:10px solid var(--ink);border-bottom:0;border-radius:38px 38px 0 0;background:#e8eef0;overflow:hidden;position:relative;max-height:560px}
.phone::before{content:"";position:absolute;top:8px;left:50%;width:72px;height:6px;margin-left:-36px;border-radius:6px;background:var(--ink);z-index:2}
.phone img{width:100%;padding-top:0}

/* team */
.cols{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0 36px}
.cols>div{border-top:2px solid var(--ink);padding-top:20px}
.cols h3{font-size:1.05rem;line-height:1.3}
.cols p{margin-top:12px;color:var(--muted);font-size:1rem}

/* pricing */
.plans{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;align-items:stretch}
.plan{background:#fff;border:1px solid var(--line);border-radius:20px;padding:32px 30px;display:flex;flex-direction:column}
.plan h3{font-size:1.15rem}
.plan .for{margin-top:8px;color:var(--muted);font-size:.975rem;min-height:4.9em}
.price{margin:24px 0 4px;font:600 3rem/1 var(--display);letter-spacing:-.03em}
.price small{font:500 1rem var(--body);color:var(--muted);letter-spacing:0;margin-left:6px}
.plan .ticks{margin:24px 0 28px;font-size:1rem}
.plan .btn{margin-top:auto}
.plan.featured{background:var(--ink);color:#fff;border-color:var(--ink)}
.plan.featured .for,.plan.featured .price small{color:#a9c3d3}
.plan.featured .ticks li::before{border-color:var(--cyan)}
.plan.featured .btn-ghost{border-color:rgba(255,255,255,.55);color:#fff}
.plan.featured .btn-ghost:hover{background:#fff;color:var(--ink)}
.plan-note{margin-top:22px;color:var(--muted);font-size:.95rem}
.compare{width:100%;border-collapse:collapse;margin-top:56px;font-size:1rem;background:#fff;border-radius:16px;overflow:hidden}
.compare th,.compare td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--line)}
.compare thead th{font:600 .95rem var(--body);background:var(--foam)}
.compare td:not(:first-child),.compare th:not(:first-child){text-align:center}
.table-scroll{overflow-x:auto}

/* faq */
.faq{max-width:820px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;padding:22px 44px 22px 0;font:600 1.075rem var(--body);position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:6px;top:50%;margin-top:-.75em;font:400 1.6rem/1.5 var(--body);color:var(--sea);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{padding:0 44px 24px 0;color:var(--muted)}

/* cta + footer */
.cta{margin-top:112px;background:var(--ink);color:#fff;padding:80px 0}
.cta .wrap{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,4fr);gap:48px;align-items:center}
.cta h2{font-size:clamp(1.5rem,3vw,2.3rem);line-height:1.15}
.cta p{margin-top:16px;color:#a9c3d3;max-width:52ch}
.cta .row{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
.site-footer{background:#0a1424;color:#9bb7c9;padding:48px 0;font-size:.95rem}
.foot{display:flex;flex-wrap:wrap;gap:24px 56px;justify-content:space-between;align-items:flex-start}
.site-footer .brand{color:#fff}
.site-footer nav{display:flex;flex-wrap:wrap;gap:12px 28px}
.site-footer a{text-decoration:none}
.site-footer a:hover{color:#fff}
.copy{width:100%;padding-top:24px;border-top:1px solid #1d3250;font-size:.875rem}

/* inner pages */
.page-head{padding:72px 0 24px}
.page-head h1{font-size:clamp(1.8rem,3.6vw,2.8rem);line-height:1.1}
.page-head p{margin-top:18px;color:var(--muted);font-size:1.125rem;max-width:60ch}
.contact-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:64px;align-items:start;padding:32px 0 96px}
.ways{display:grid;gap:0}
.way{display:flex;flex-direction:column;gap:2px;padding:20px 0;border-top:1px solid var(--line);text-decoration:none}
.way:last-child{border-bottom:1px solid var(--line)}
.way span{font-size:.9rem;color:var(--muted)}
.way strong{font:600 1.15rem var(--body)}
.way:hover strong{color:var(--sea)}
.form{background:#fff;border:1px solid var(--line);border-radius:20px;padding:32px}
.form h2{font-size:1.3rem;margin-bottom:6px}
.form>p{color:var(--muted);margin-bottom:22px}
.field{display:grid;gap:6px;margin-bottom:16px}
.field label{font-weight:600;font-size:.95rem}
.field input,.field select,.field textarea{width:100%;font:400 1rem var(--body);color:var(--ink);padding:12px 14px;border:1.5px solid #b9cbd2;border-radius:12px;background:#fff}
.field textarea{min-height:100px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:3px solid rgba(11,127,148,.3);border-color:var(--sea)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.hint{font-size:.875rem;color:var(--muted);margin-top:12px}

/* responsive */
@media (max-width:980px){
  .hero-top,.feature,.cta .wrap,.contact-grid{grid-template-columns:1fr}
  .hero-top{gap:28px}
  .feature{gap:32px}
  .feature.flip{grid-template-columns:1fr}
  .feature.flip .f-text{order:0}
  .cols{grid-template-columns:1fr 1fr;gap:32px 28px}
  .plans{grid-template-columns:1fr}
  .cta .row{justify-content:flex-start}
  .section{padding-top:80px}
}
@media (max-width:860px){
  .menu-btn{display:inline-flex;align-items:center}
  .bar{flex-wrap:wrap;gap:12px}
  .actions{margin-left:auto}
  .actions .support-btn{display:none}
  .nav{display:none;order:5;width:100%;flex-direction:column;gap:0;margin:0;padding-bottom:12px}
  .nav.open{display:flex}
  .nav a{padding:14px 0;border-bottom:1px solid var(--line)}
  .nav .only-mobile{display:block}
  .bar-langs{display:none}
  .nav .nav-langs{display:flex;align-self:flex-start;margin-top:14px}
}
@media (max-width:560px){
  body{font-size:1rem}
  .bar{flex-wrap:nowrap;gap:8px}
  .brand{flex:1;min-width:0;font-size:1.05rem}
  .brand svg{width:26px;height:26px}
  .actions .btn{min-height:40px;padding:0 14px;font-size:.9rem}
  .menu-btn{min-height:40px;padding:0 12px;font-size:.9rem}
  .actions{margin-left:0}
  .nav{position:absolute;left:0;right:0;top:100%;background:var(--paper);padding:0 20px 14px;border-bottom:1px solid var(--line)}
  .site-header{position:sticky}
  .hero{padding-top:44px}
  .counters{grid-template-columns:1fr 1fr}
  .cols{grid-template-columns:1fr}
  .two{grid-template-columns:1fr}
  .duo .shot:nth-child(2){margin-left:0}
  .form{padding:22px}
  .shot:not(.zoom){overflow-x:auto;-webkit-overflow-scrolling:touch}
  .shot:not(.zoom) img{min-width:760px}
  .zoom{aspect-ratio:4/3}
  .zoom img{width:260%}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .stage .frame{animation:none}
  *{transition:none!important}
}