/* Layout: dây chuyền nhà máy đọc từ trái sang phải — hero ảnh xưởng, băng chuyền 6 công đoạn, rồi catalog dạng lưới kệ hàng */
:root{
  --blue:#004eb3; --blue-deep:#003580; --orange:#ff7a00; --orange-ink:#d65f00;
  --bg:#f5f8fc; --surface:#ffffff; --ink:#0d1b33; --muted:#52627d; --line:#dbe3ef;
  --band:#004eb3; --band-ink:#ffffff; --chip:#e8eff9;
  --f-display:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --f-body:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --f-tech:"Saira Condensed","Arial Narrow",system-ui,sans-serif;
  --r:14px; --max:1180px;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0a1220; --surface:#111d31; --ink:#e8eef8; --muted:#9db0cc; --line:#22324d;
  --band:#0b2a5c; --band-ink:#ffffff; --chip:#18294a; --orange-ink:#ff9a3d; --blue:#3d86ff; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0a1220; --surface:#111d31; --ink:#e8eef8; --muted:#9db0cc; --line:#22324d;
  --band:#0b2a5c; --band-ink:#ffffff; --chip:#18294a; --orange-ink:#ff9a3d; --blue:#3d86ff; color-scheme:dark}

*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.6;margin:0}
img{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3{font-family:var(--f-display);line-height:1.2;text-wrap:balance;margin:0}
h2{font-size:clamp(1.7rem,3.4vw,2.5rem);font-weight:800;letter-spacing:-.02em}
h3{font-size:1.05rem;font-weight:700}
p{margin:0}
.wrap{max-width:var(--max);margin-inline:auto;padding-inline:20px}
.eyebrow{font-family:var(--f-tech);font-weight:600;font-size:.95rem;letter-spacing:.14em;text-transform:uppercase;color:var(--orange-ink);display:flex;align-items:center;gap:10px}
.eyebrow::before{content:"";width:28px;height:3px;background:var(--orange);border-radius:2px}
.lead{color:var(--muted);max-width:62ch;font-size:1.05rem}
section{padding-block:clamp(56px,8vw,96px)}
.sec-head{display:grid;gap:14px;margin-bottom:36px}
:focus-visible{outline:3px solid var(--orange);outline-offset:3px;border-radius:6px}

/* Header */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:#fff;border-bottom:1px solid #e3e9f2}
.top .wrap{display:flex;align-items:center;gap:24px;height:72px}
.logo img{height:46px;width:auto}
.nav{display:flex;gap:22px;margin-left:auto;font-weight:600;font-size:.94rem}
.nav a{text-decoration:none;color:#22314d}
.nav a:hover{color:#004eb3}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:700;text-decoration:none;border-radius:999px;padding:12px 22px;border:0;cursor:pointer;font:inherit;font-weight:700;transition:transform .15s,background .15s}
.btn:hover{transform:translateY(-1px)}
.btn-orange{background:var(--orange);color:#fff}
.btn-orange:hover{background:#ff8b1f}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border:1.5px solid rgba(255,255,255,.55)}
.top .btn{padding:10px 18px;font-size:.92rem}
.tel{font-family:var(--f-tech);font-size:1.08rem;letter-spacing:.03em}
@media (max-width:900px){.nav{display:none}.top .btn{margin-left:auto}.logo img{height:38px}}

/* Hero */
.hero{position:relative;color:#fff;padding:0;overflow:hidden;background:#002a66}
.hero-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 40%}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,32,84,.94) 0%,rgba(0,42,104,.82) 42%,rgba(0,42,104,.25) 100%)}
.hero .wrap{position:relative;z-index:1;padding-block:clamp(64px,10vw,120px);display:grid;gap:26px}
.hero h1{font-size:clamp(2.1rem,5.2vw,3.9rem);font-weight:800;letter-spacing:-.025em;max-width:16ch}
.hero h1 em{font-style:normal;color:var(--orange)}
.hero .eyebrow{color:#ffb066}
.hero p.sub{max-width:54ch;font-size:1.1rem;color:#dbe6f7}
.hero .ctas{display:flex;flex-wrap:wrap;gap:12px}
.facts{display:flex;flex-wrap:wrap;gap:0;margin-top:14px;border-top:1px solid rgba(255,255,255,.25);padding-top:22px;max-width:640px}
.fact{padding-right:34px;margin-right:34px;border-right:1px solid rgba(255,255,255,.25)}
.fact:last-child{border-right:0}
.fact b{display:block;font-family:var(--f-tech);font-size:2.1rem;font-weight:700;line-height:1;color:#fff}
.fact span{font-size:.85rem;color:#bcd0ee}
@media (max-width:560px){.fact{padding-right:18px;margin-right:18px}.fact b{font-size:1.6rem}}

/* Line strip */
.line{background:var(--band);color:var(--band-ink);padding-block:34px}
.line-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:8px 24px;margin-bottom:20px}
.line-head h2{font-size:1.25rem;font-weight:700}
.line-head p{color:#bcd0ee;font-size:.92rem}
.steps{display:grid;grid-template-columns:repeat(6,1fr);gap:0;counter-reset:s;list-style:none;margin:0;padding:0}
.steps li{position:relative;padding:14px 16px 14px 0;border-top:3px solid rgba(255,255,255,.25)}
.steps li::before{counter-increment:s;content:counter(s,decimal-leading-zero);display:block;font-family:var(--f-tech);font-weight:700;font-size:1.5rem;color:var(--orange);line-height:1;margin-bottom:6px}
.steps li::after{content:"";position:absolute;top:-3px;left:0;height:3px;width:0;background:var(--orange);animation:run 6s ease-in-out infinite;animation-delay:calc(var(--i)*1s)}
@keyframes run{0%{width:0;opacity:1}16%{width:100%;opacity:1}30%,100%{width:100%;opacity:0}}
.steps b{display:block;font-weight:700;font-size:.98rem}
.steps span{font-size:.8rem;color:#bcd0ee}
@media (max-width:820px){.steps{grid-template-columns:repeat(3,1fr)}}
@media (max-width:460px){.steps{grid-template-columns:repeat(2,1fr)}}

/* About */
.about{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,5vw,64px);align-items:center}
.about-text{display:grid;gap:18px;min-width:0}
.mosaic{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:auto auto;gap:12px}
.mosaic img{width:100%;height:100%;object-fit:cover;border-radius:var(--r)}
.mosaic .tall{grid-row:span 2;aspect-ratio:3/5}
.mosaic .sq{aspect-ratio:4/3}
.reasons{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:48px}
.reason{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px;display:grid;gap:8px;align-content:start}
.reason .ic{width:42px;height:42px;border-radius:10px;background:var(--chip);display:grid;place-items:center;color:var(--blue)}
.reason p{font-size:.92rem;color:var(--muted)}
@media (max-width:900px){.about{grid-template-columns:1fr}.reasons{grid-template-columns:1fr 1fr}}
@media (max-width:480px){.reasons{grid-template-columns:1fr}}

/* Products */
.products{background:var(--surface);border-block:1px solid var(--line)}
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px}
.tab{font:inherit;font-weight:600;font-size:.9rem;border:1.5px solid var(--line);background:transparent;color:var(--ink);padding:8px 16px;border-radius:999px;cursor:pointer}
.tab[aria-pressed="true"]{background:var(--blue);border-color:var(--blue);color:#fff}
.pgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:16px}
.pcard{display:grid;grid-template-rows:auto 1fr;border-radius:var(--r);overflow:hidden;background:var(--bg);border:1px solid var(--line)}
.pcard .ph{aspect-ratio:4/5;background:#fff;overflow:hidden}
.pcard img{width:100%;height:100%;object-fit:cover;transition:transform .35s}
.pcard:hover img{transform:scale(1.05)}
.pcard .meta{padding:12px 14px 14px;display:grid;gap:4px;align-content:start}
.pcard h3{font-size:.95rem}
.tag{font-family:var(--f-tech);font-size:.8rem;letter-spacing:.06em;text-transform:uppercase;color:var(--orange-ink);font-weight:600}

/* Machines */
.mgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.mcard{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:grid;grid-template-rows:auto 1fr}
.mcard .ph{aspect-ratio:4/3;background:#fff}
.mcard img{width:100%;height:100%;object-fit:cover}
.mcard .meta{padding:16px 18px 18px;display:flex;flex-direction:column;gap:10px}
.mcard .q{margin-top:auto;font-weight:700;font-size:.9rem;color:var(--blue);text-decoration:none;display:inline-flex;gap:6px;align-items:center}
.mcard .q:hover{color:var(--orange-ink)}
@media (max-width:860px){.mgrid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.mgrid{grid-template-columns:1fr}}

/* Filling */
.fill{background:var(--band);color:var(--band-ink)}
.fill-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,64px);align-items:center}
.fill-grid > img{border-radius:var(--r);width:100%;aspect-ratio:5/4;object-fit:cover}
.fill .eyebrow{color:#ffb066}
.fill .lead{color:#c9d8ef}
.fill-text{display:grid;gap:18px;min-width:0}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips span{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.25);padding:6px 14px;border-radius:999px;font-size:.9rem;font-weight:600}
.fill .models{font-family:var(--f-tech);font-size:1.1rem;letter-spacing:.03em}
@media (max-width:860px){.fill-grid{grid-template-columns:1fr}}

/* Projects */
.projects{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.proj{display:grid;gap:10px;align-content:start}
.proj img{aspect-ratio:3/2;width:100%;object-fit:cover;border-radius:var(--r);background:#fff;border:1px solid var(--line)}
.proj p{font-size:.88rem;color:var(--muted)}
@media (max-width:960px){.projects{grid-template-columns:repeat(3,1fr)}}
@media (max-width:560px){.projects{grid-template-columns:1fr 1fr}}

/* Catalog table */
.cat{display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(28px,5vw,56px);align-items:start}
.cat-side{display:grid;gap:18px;min-width:0}
.tbl-wrap{overflow-x:auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);min-width:0}
table{border-collapse:collapse;width:100%;font-size:.92rem;min-width:620px}
th,td{text-align:left;padding:12px 16px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-family:var(--f-tech);text-transform:uppercase;letter-spacing:.08em;font-size:.82rem;color:var(--muted);font-weight:600;background:var(--chip)}
tr:last-child td{border-bottom:0}
td:first-child{font-weight:700;white-space:nowrap}
td.num{font-family:var(--f-tech);font-size:1rem;white-space:nowrap;font-variant-numeric:tabular-nums}
.inds{display:flex;flex-wrap:wrap;gap:8px}
.inds span{background:var(--chip);color:var(--ink);padding:6px 12px;border-radius:8px;font-size:.88rem;font-weight:600}
.certs{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.certs img{border-radius:10px;border:1px solid var(--line);aspect-ratio:4/3;object-fit:cover;width:100%;background:#fff}
@media (max-width:900px){.cat{grid-template-columns:1fr}}

/* Contact */
.contact{background:var(--surface);border-top:1px solid var(--line)}
.c-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,56px)}
.c-info{display:grid;gap:22px;align-content:start;min-width:0}
.people{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.person{border:1px solid var(--line);border-radius:var(--r);padding:16px;display:grid;gap:4px;background:var(--bg)}
.person small{color:var(--muted);font-weight:600}
.person .tel{font-size:1.35rem;font-weight:700;color:var(--blue)}
.dl{display:grid;grid-template-columns:auto 1fr;gap:8px 16px;font-size:.95rem}
.dl dt{color:var(--muted)}
.dl dd{margin:0;font-weight:600;overflow-wrap:anywhere}
form{background:var(--bg);border:1px solid var(--line);border-radius:var(--r);padding:clamp(18px,3vw,28px);display:grid;gap:14px;min-width:0}
form h3{font-size:1.25rem}
label{display:grid;gap:6px;font-weight:600;font-size:.88rem}
input,select,textarea{font:inherit;font-weight:400;font-size:.95rem;padding:11px 13px;border-radius:10px;border:1.5px solid var(--line);background:var(--surface);color:var(--ink);width:100%}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--blue)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.out{display:grid;gap:10px;background:var(--chip);border-radius:10px;padding:14px;font-size:.9rem}
.out pre{margin:0;white-space:pre-wrap;font:inherit}
.out .btn{justify-self:start;background:var(--blue);color:#fff;padding:9px 16px}
.q-card{background:var(--bg);border:1px solid var(--line);border-radius:var(--r);padding:clamp(18px,3vw,28px);display:grid;gap:16px;align-content:start;min-width:0}
.q-card h3{font-size:1.25rem}
.q-card p{color:var(--muted)}
.q-picks{display:grid;gap:10px}
.q-picks a{display:grid;gap:2px;text-decoration:none;border:1.5px solid var(--line);border-radius:12px;padding:12px 16px;background:var(--surface)}
.q-picks a:hover{border-color:var(--blue)}
.q-picks b{color:var(--blue)}
.q-picks span{font-size:.85rem;color:var(--muted)}
.q-card > .btn{justify-self:start}
@media (max-width:860px){.c-grid{grid-template-columns:1fr}}
@media (max-width:460px){.people,.row2{grid-template-columns:1fr}}

footer{background:#002a66;color:#c9d8ef;padding-block:40px calc(40px + env(safe-area-inset-bottom,0px));font-size:.88rem}
footer .wrap{display:flex;flex-wrap:wrap;gap:20px 40px;align-items:center;justify-content:space-between}
footer .brand{display:flex;gap:14px;align-items:center}
footer .brand img{width:48px;height:48px;border-radius:10px}
footer b{color:#fff}

.callfab{display:none}
@media (max-width:700px){.callfab{display:flex;position:fixed;right:16px;bottom:calc(16px + env(safe-area-inset-bottom,0px));z-index:30;box-shadow:0 8px 24px rgba(0,40,100,.35)}}