:root{
  --navy:#0b2545; --navy-2:#13315c; --ink:#14213d; --muted:#556070; --line:#dfe4ea;
  --bg:#ffffff; --soft:#f4f6f9; --amber:#f2a900; --amber-ink:#7a5300;
  --r:14px; --max:1160px;
  --font:"Be Vietnam Pro","Segoe UI",Roboto,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:72px}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6;font-size:16px}
img,svg{display:block}
a{color:inherit}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
h1,h2,h3{line-height:1.25;margin:0}
h2{font-size:clamp(26px,3.4vw,36px);font-weight:800;color:var(--navy)}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--amber-ink);margin-bottom:10px}
.lead{color:var(--muted);font-size:17px;max-width:720px;margin:14px 0 0}
section{padding:88px 0}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 22px;border-radius:999px;font-weight:700;text-decoration:none;font-size:15px;transition:transform .15s,background .15s}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--amber);color:#1b1300}
.btn-primary:hover{background:#ffb81c}
.btn-ghost{border:1.5px solid rgba(255,255,255,.45);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.08)}

/* Header */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand-logo{height:44px;width:auto;flex:none}
.brand-text{display:flex;flex-direction:column;line-height:1.15;padding-left:12px;border-left:1px solid var(--line)}
.brand-text b{font-size:17px;color:var(--navy);font-weight:800;letter-spacing:.01em}
.brand-text small{font-size:11px;color:var(--muted);letter-spacing:.04em;text-transform:uppercase}
.menu{display:flex;gap:28px;align-items:center}
.menu a{text-decoration:none;font-weight:600;font-size:15px;color:var(--ink)}
.menu a:hover{color:var(--navy-2)}
.menu .btn{padding:9px 18px}
.burger{display:none;background:none;border:0;padding:8px;cursor:pointer}
.brand-text b,.brand-text small{white-space:nowrap}
@media (max-width:480px){.brand-logo{height:36px}.brand-text{padding-left:10px}.brand-text b{font-size:14px}.brand-text small{font-size:10px}}
@media (max-width:340px){.brand-text{display:none}}
@media (max-width:860px){
  .burger{display:block}
  .menu{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;gap:0;border-bottom:1px solid var(--line);padding:8px 20px 16px}
  .menu.open{display:flex}
  .menu a{padding:12px 0;border-bottom:1px solid var(--soft)}
  .menu .btn{margin-top:12px;justify-content:center;border-bottom:0}
}

/* Hero */
.hero{position:relative;background:var(--navy);color:#fff;overflow:hidden;padding:96px 0 104px}
.hero::before{content:"";position:absolute;inset:0;background:
  radial-gradient(900px 500px at 85% 20%,rgba(242,169,0,.18),transparent 60%),
  radial-gradient(700px 500px at 0% 100%,rgba(70,130,200,.25),transparent 60%)}
.hero-grid{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(30px,4.6vw,52px);font-weight:800;letter-spacing:-.01em}
.hero h1 span{color:var(--amber)}
.hero p{color:#c9d4e3;font-size:18px;max-width:620px;margin:20px 0 32px}
.hero .company{font-size:14px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:#9fb3cc;margin-bottom:18px}
.cta{display:flex;flex-wrap:wrap;gap:12px}
.wave{width:100%;height:auto;opacity:.95}
@media (max-width:860px){.hero-grid{grid-template-columns:1fr}.hero-art{display:none}.hero{padding:64px 0 72px}}

/* Fields */
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:44px}
@media (max-width:1000px){.grid4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.grid4{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px 24px;transition:box-shadow .2s,transform .2s}
.card:hover{box-shadow:0 14px 34px rgba(11,37,69,.10);transform:translateY(-2px)}
.icon{width:52px;height:52px;border-radius:12px;background:#fff6dc;display:grid;place-items:center;margin-bottom:18px}
.card h3{font-size:19px;font-weight:700;color:var(--navy);margin-bottom:8px}
.card p{margin:0 0 12px;color:var(--muted);font-size:15px}
.card ul{margin:0;padding-left:18px;color:var(--ink);font-size:14.5px}
.card li{margin:4px 0}

/* Services */
.alt{background:var(--soft)}
.split{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:start}
@media (max-width:900px){.split{grid-template-columns:1fr;gap:32px}}
.svc{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media (max-width:560px){.svc{grid-template-columns:1fr}}
.svc div:last-child:nth-child(odd){grid-column:1/-1}
.svc div{background:#fff;border-radius:12px;padding:18px 18px 16px;border-left:4px solid var(--amber)}
.svc b{display:block;color:var(--navy);margin-bottom:4px}
.svc span{color:var(--muted);font-size:14.5px}

/* Process */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:44px}
@media (max-width:900px){.steps{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.steps{grid-template-columns:1fr}}
.step{position:relative;padding:24px 22px;border:1px solid var(--line);border-radius:var(--r);background:#fff}
.step::before{counter-increment:s;content:counter(s,decimal-leading-zero);font-weight:800;font-size:30px;color:var(--amber);display:block;margin-bottom:6px}
.step h3{font-size:17px;color:var(--navy);margin-bottom:6px}
.step p{margin:0;color:var(--muted);font-size:14.5px}

/* Capability */
.cap{background:var(--navy);color:#fff}
.cap h2{color:#fff}
.cap .lead{color:#c9d4e3}
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:44px}
@media (max-width:900px){.cap-grid{grid-template-columns:1fr}}
.cap-item{background:var(--navy-2);border-radius:var(--r);padding:26px 24px;border:1px solid rgba(255,255,255,.08)}
.cap-item h3{font-size:18px;margin-bottom:8px;color:var(--amber)}
.cap-item p{margin:0;color:#c9d4e3;font-size:15px}

/* Contact */
.addr{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:40px}
@media (max-width:760px){.addr{grid-template-columns:1fr}}
.addr .card h3{display:flex;align-items:center;gap:10px}
.addr .card p{color:var(--ink);font-size:16px}
.addr a.map{font-weight:700;color:var(--navy-2);font-size:14.5px;text-decoration:none}
.addr a.map:hover{text-decoration:underline}
.contact-line{margin-top:24px;padding:20px 24px;border-radius:var(--r);background:var(--soft);display:flex;flex-wrap:wrap;gap:12px 40px;color:var(--muted)}
.contact-line b{color:var(--ink)}
.contact-line a{text-decoration:none}
.contact-line a:hover b{color:var(--navy-2);text-decoration:underline}

footer{background:#081b33;color:#9fb3cc;padding:32px 0;font-size:14px}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px}
footer b{color:#fff}

/* ===== Trang Sản phẩm & Đối tác ===== */
.menu a.active{color:var(--navy-2);box-shadow:inset 0 -2px 0 var(--amber)}
.page-hero{background:var(--navy);color:#fff;padding:64px 0 56px;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background:radial-gradient(700px 400px at 90% 0%,rgba(242,169,0,.16),transparent 60%)}
.page-hero .wrap{position:relative}
.page-hero h1{font-size:clamp(28px,4vw,42px);font-weight:800}
.page-hero p{color:#c9d4e3;font-size:17px;max-width:680px;margin:14px 0 0}
.crumb{font-size:14px;color:#9fb3cc;margin-bottom:14px}
.crumb a{text-decoration:none;color:#c9d4e3}
.crumb a:hover{text-decoration:underline}

.filters{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}
.chip{font:inherit;font-size:14.5px;font-weight:600;padding:9px 16px;border-radius:999px;border:1.5px solid var(--line);background:#fff;color:var(--ink);cursor:pointer}
.chip:hover{border-color:var(--navy-2)}
.chip[aria-pressed="true"]{background:var(--navy);border-color:var(--navy);color:#fff}

.pgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:28px}
@media (max-width:980px){.pgrid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.pgrid{grid-template-columns:1fr}}
.pcard{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;cursor:pointer;text-align:left;font:inherit;color:inherit;padding:0;transition:box-shadow .2s,transform .2s}
.pcard:hover{box-shadow:0 14px 34px rgba(11,37,69,.12);transform:translateY(-2px)}
.pcard:focus-visible{outline:3px solid var(--amber);outline-offset:2px}
.thumb{position:relative;aspect-ratio:4/3;background:var(--soft);overflow:hidden}
.thumb img{width:100%;height:100%;object-fit:cover}
.ph{position:absolute;inset:0;display:grid;place-items:center;align-content:center;gap:8px;color:#8792a2;font-size:13.5px;font-weight:600;background:linear-gradient(135deg,#eef1f5,#e2e7ee)}
.badge-video{position:absolute;right:10px;bottom:10px;display:flex;align-items:center;gap:6px;background:rgba(8,27,51,.82);color:#fff;font-size:12.5px;font-weight:700;padding:5px 10px;border-radius:999px}
.badge-count{position:absolute;left:10px;bottom:10px;background:rgba(8,27,51,.72);color:#fff;font-size:12.5px;font-weight:700;padding:5px 9px;border-radius:999px}
.pbody{padding:18px 20px 20px}
.pcat{font-size:12.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--amber-ink)}
.pbody h3{font-size:18px;color:var(--navy);margin:6px 0 6px}
.pbody p{margin:0;color:var(--muted);font-size:14.5px}
.empty{margin-top:28px;padding:40px 24px;text-align:center;border:1.5px dashed var(--line);border-radius:var(--r);color:var(--muted)}

/* Video tiêu biểu */
.vgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:32px}
@media (max-width:760px){.vgrid{grid-template-columns:1fr}}
.vitem h3{font-size:16.5px;color:var(--navy);margin:12px 0 0}
.player{position:relative;aspect-ratio:16/9;border-radius:12px;overflow:hidden;background:#081b33}
.player iframe,.player video{position:absolute;inset:0;width:100%;height:100%;border:0}
.yt{position:absolute;inset:0;width:100%;height:100%;border:0;padding:0;cursor:pointer;background:#081b33 center/cover no-repeat}
.yt::after{content:"";position:absolute;left:50%;top:50%;width:68px;height:48px;transform:translate(-50%,-50%);border-radius:12px;background:rgba(227,0,27,.92) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M9 7v10l8-5z' fill='%23fff'/%3E%3C/svg%3E") center/30px no-repeat}
.yt:hover::after{background-color:#e3001b}

/* Đối tác */
.partners{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;margin-top:32px}
@media (max-width:980px){.partners{grid-template-columns:repeat(4,1fr)}}
@media (max-width:560px){.partners{grid-template-columns:repeat(2,1fr)}}
.partner{display:grid;place-items:center;aspect-ratio:3/2;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px;text-decoration:none;color:var(--muted);font-size:13.5px;font-weight:600;text-align:center}
.partner img{max-width:100%;max-height:100%;object-fit:contain;filter:grayscale(1);opacity:.75;transition:filter .2s,opacity .2s}
.partner:hover img{filter:none;opacity:1}

/* Hộp xem chi tiết */
dialog.viewer{width:min(960px,calc(100vw - 32px));max-height:calc(100vh - 32px);padding:0;border:0;border-radius:16px;overflow:auto;color:var(--ink)}
dialog.viewer::backdrop{background:rgba(8,20,40,.78)}
.vhead{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;padding:20px 22px 0}
.vhead h2{font-size:22px}
.vclose{flex:none;width:40px;height:40px;border-radius:50%;border:0;background:var(--soft);font-size:22px;line-height:1;cursor:pointer}
.vclose:hover{background:var(--line)}
.vclose:focus:not(:focus-visible){outline:none}
.vmain{padding:16px 22px 22px}
.stage{position:relative;aspect-ratio:16/10;background:var(--soft);border-radius:12px;overflow:hidden}
.stage img{width:100%;height:100%;object-fit:contain;background:#fff}
.thumbs{display:flex;gap:10px;margin-top:12px;overflow-x:auto;padding-bottom:4px}
.thumbs button{flex:none;width:84px;height:63px;border-radius:8px;overflow:hidden;border:2px solid transparent;padding:0;cursor:pointer;background:var(--soft)}
.thumbs button[aria-current="true"]{border-color:var(--amber)}
.thumbs img{width:100%;height:100%;object-fit:cover}
.thumbs .tv{display:grid;place-items:center;height:100%;font-size:12px;font-weight:700;color:#fff;background:#081b33}
.vdesc{margin:16px 0 0;color:var(--muted)}
.specs{margin:12px 0 0;padding-left:18px}
.specs li{margin:3px 0}
.vcta{margin-top:18px}