:root{--navy:#1F3864;--navy2:#16294B;--blue:#2E5C9A;--sky:#5B9BD5;--ice:#EAF1FB;--ice2:#F4F9FD;--ink:#0F1B2D;--muted:#4A5B70;--line:#DCE6F2;--amber:#F5A524;--amber-d:#E39512;--green:#2E9E63;--r:16px;--sh:0 10px 30px rgba(31,56,100,.13)}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;font:16px/1.65 "Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:#fff;-webkit-text-size-adjust:100%}
img,svg{max-width:100%;height:auto}
a{color:var(--blue)}
h1,h2,h3{line-height:1.25;color:var(--navy);margin:0 0 .5em}
h2{font-size:clamp(25px,3vw,36px);letter-spacing:-.01em}
h3{font-size:19px}
p{margin:0 0 1em}
.wrap{max-width:1320px;margin:0 auto;padding:0 28px}
.ico{width:1.25em;height:1.25em;vertical-align:-.22em;flex:none}
.skip{position:absolute;left:-999px;top:0;background:#fff;padding:8px 12px;z-index:99}.skip:focus{left:8px}
a:focus-visible,summary:focus-visible,.btn:focus-visible{outline:3px solid var(--amber);outline-offset:2px}
/* tên sản phẩm một màu (trước đây Nova / Mix hai màu, nhìn như lỗi màu) */
.nm,.nm .a,.nm .b{color:var(--navy)}
.hero .nm,.hero .nm .a,.hero .nm .b{color:#fff}
.hero .pcard .nm,.hero .pcard .nm .a,.hero .pcard .nm .b{color:var(--navy)}
/* header */
.top{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:saturate(1.4) blur(8px);-webkit-backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:22px;height:66px;position:relative}
.brand{display:flex;align-items:center;gap:14px;font-weight:700;color:var(--navy);text-decoration:none;font-size:18px;margin-right:auto;line-height:1.15}
.brand .logo{height:44px;width:auto;display:block;flex:none}
.brand small{display:block;font-weight:500;font-size:12.5px;color:var(--muted);letter-spacing:.02em;border-left:1px solid var(--line);padding-left:14px}
.lang{display:flex;align-items:center;gap:7px;font-size:14px;color:#9aa8bd}
.lang b{color:var(--navy)}.lang a{color:var(--muted);text-decoration:none}.lang a:hover{color:var(--navy);text-decoration:underline}
.top nav{display:flex;align-items:center;gap:22px}
.top nav a{color:var(--muted);text-decoration:none;font-size:15px;white-space:nowrap}
.top nav a:hover,.top nav a.on{color:var(--navy)}.top nav a.on{font-weight:700}
.top nav a.btn{color:#1b2a47}
.burger,.nv-chk{display:none}
/* nút */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:10px;font-weight:700;text-decoration:none;border:2px solid transparent;cursor:pointer;font-size:16px;line-height:1.2}
.btn-amber{background:var(--amber);color:#1b2a47}.btn-amber:hover{background:var(--amber-d)}
.btn-line{border-color:rgba(255,255,255,.55);color:#fff}.btn-line:hover{background:rgba(255,255,255,.1)}
.btn-navy{background:var(--navy);color:#fff}.btn-navy:hover{background:var(--navy2)}
.btn-sm{padding:9px 16px;font-size:14.5px}
.btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.more{font-weight:700;color:var(--blue);display:inline-flex;gap:6px;align-items:center;text-decoration:none}.more:hover{text-decoration:underline}
/* hero */
.hero{background:radial-gradient(900px 440px at 88% -8%,rgba(91,155,213,.38),transparent 65%),linear-gradient(180deg,#1F3864 0%,#16294B 100%);color:#fff;padding:60px 0 56px;position:relative;overflow:hidden}
.eyebrow{display:flex;gap:8px;align-items:center;font-size:13px;letter-spacing:.09em;text-transform:uppercase;color:#9BC4EE;margin:0 0 14px;font-weight:600}
.hero h1{color:#fff;font-size:clamp(30px,4.5vw,52px);letter-spacing:-.015em;margin:0 0 16px;max-width:900px}
.hero .lead{font-size:clamp(17px,1.7vw,20px);color:#D3E1F4;max-width:740px}
.ticks{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:8px;color:#D3E1F4;font-size:15.5px}
.ticks li{display:flex;gap:10px;align-items:flex-start}.ticks .ico{color:#7FD6A3;margin-top:.22em}
.hero-p{padding:56px 0 52px}
.hero-top{display:grid;grid-template-columns:1.35fr .65fr;gap:56px;align-items:center}
.glass{list-style:none;margin:0;padding:24px 26px;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.07);border-radius:20px;display:grid;gap:20px}
.glass li{display:flex;gap:14px;align-items:flex-start;color:#C9DAF0;font-size:15.5px;line-height:1.5}
.glass .ico{width:30px;height:30px;color:#7FD6A3;margin-top:2px}
.glass b{display:block;color:#fff;font-size:17px;margin-bottom:2px}
.two{display:grid;grid-template-columns:1.02fr .98fr;gap:46px;align-items:center}
.hv{min-width:0}
.hv .fig.frame,.hv .fig.win,.hv img.plain{box-shadow:0 24px 54px rgba(5,14,35,.5)}
/* ba thẻ sản phẩm */
.trio{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;align-items:stretch;margin-top:44px}
.pcard{display:flex;flex-direction:column;background:#fff;color:var(--ink);border-radius:var(--r);box-shadow:0 20px 44px rgba(5,14,35,.4);overflow:hidden;text-decoration:none;transition:transform .2s,box-shadow .2s}
.pcard:hover{transform:translateY(-5px);box-shadow:0 26px 50px rgba(5,14,35,.5)}
.pcard .scene{background:linear-gradient(#F7FAFE,#E4EEF8);line-height:0}
.pcard .scene img{width:100%;display:block}
.pcard .scene.real{background:#E8EEF6;border-bottom:1px solid #D5DEEA}.pcard .scene.real img{aspect-ratio:16/10;object-fit:cover;object-position:left top}
.pcard .body{padding:18px 22px 22px}
.pcard h3{margin:0;font-size:25px}
.pcard .role{font-size:12.5px;letter-spacing:.07em;text-transform:uppercase;color:#5A6B7D;margin:2px 0 8px;font-weight:600}
.pcard p{font-size:15px;color:var(--muted)}
.pcard .more{margin-top:2px}
.link{width:124px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:#C6DAF3;font-size:13px;line-height:1.35;padding:0 6px;gap:4px}
.link svg{width:110px;height:52px}.arr-v{display:none}.link .lb{display:block}
@keyframes dash{to{stroke-dashoffset:-32}}
.dash{stroke-dasharray:8 8;animation:dash 1.1s linear infinite}
@media (prefers-reduced-motion:reduce){.dash{animation:none}html{scroll-behavior:auto}}
/* dải thông số */
.strip{background:#fff;border-bottom:1px solid var(--line)}
.strip .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;padding-top:18px;padding-bottom:18px}
.strip div{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--navy);font-size:15px}
.strip .ico{color:var(--blue);width:1.5em;height:1.5em}
/* mục */
.s{padding:76px 0}.s.alt{background:var(--ice2)}
.s-head{max-width:1040px;margin:0 0 38px}
.kicker{color:var(--blue);font-weight:800;font-size:13px;letter-spacing:.1em;text-transform:uppercase;margin:0 0 8px}
.s-head p{color:var(--muted);font-size:18px;margin:0;max-width:780px}
.gap{height:34px}
.grid{display:grid;gap:18px}.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px}
.alt .card{background:#fff}
.card .ci{width:46px;height:46px;border-radius:12px;background:var(--ice);color:var(--blue);display:grid;place-items:center;margin-bottom:14px}
.card .ci .ico{width:24px;height:24px}
.card h3{font-size:18px;margin:0 0 6px}
.card p{margin:0;color:var(--muted);font-size:15.5px}
.card.big{padding:28px}.card.big h3{font-size:21px;margin-bottom:10px}.card.big p{color:var(--muted)}
.card .btn{margin-top:14px}
.fine{font-size:14px;color:var(--muted);margin:12px 0 0}
.checks{list-style:none;padding:0;margin:16px 0 18px;display:grid;gap:10px}
.checks li{display:flex;gap:10px;align-items:flex-start;font-size:16px}.checks .ico{color:var(--green);margin-top:.24em;width:1.2em;height:1.2em}
.card .checks{margin-bottom:0}
/* luồng */
.steps{list-style:none;margin:0;padding:0;display:grid;gap:22px 18px;counter-reset:s}
.steps.c3{grid-template-columns:repeat(3,1fr)}.steps.c4{grid-template-columns:repeat(4,1fr)}.steps.c5{grid-template-columns:repeat(5,1fr)}
.steps li{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px 22px 22px;display:flex;flex-direction:column;gap:4px;font-size:15.5px;color:var(--muted)}
.steps li:before{counter-increment:s;content:counter(s);position:absolute;top:-14px;left:20px;background:var(--navy);color:#fff;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:14px}
.steps .who{font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--blue);font-weight:800}
.steps b{color:var(--navy);font-size:17.5px;line-height:1.3}
/* hàng ảnh + chữ */
.row{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;margin:0 0 70px}.row:last-child{margin-bottom:0}
.row.flip .viz{order:2}
.row.wide{grid-template-columns:1.45fr 1fr}.row.wide.flip{grid-template-columns:1fr 1.45fr}
.viz{min-width:0}
.viz img.plain{display:block;width:100%;height:auto;border-radius:14px;box-shadow:var(--sh)}
.h3{font-size:clamp(22px,2.3vw,28px);letter-spacing:-.01em}
.txt p{color:var(--muted);font-size:17px}
.cap{font-size:13.5px;color:#64748b;margin:10px 2px 0}.cap.light{color:#A9C0E0}
/* khung ảnh chụp */
.fig{margin:0}.fig img{display:block;width:100%;height:auto}.fig a.zoom{display:block;cursor:zoom-in}
.fig.frame{border:1px solid #CBD5E1;border-radius:12px;overflow:hidden;background:#fff;box-shadow:var(--sh)}
.pair{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}
.fig.win{border:1px solid #CBD5E1;border-radius:10px;overflow:hidden;background:#fff;box-shadow:var(--sh)}
.fig.frame:before{content:"";display:block;height:26px;background:radial-gradient(circle at 16px 13px,#F87171 4.5px,transparent 5.5px),radial-gradient(circle at 34px 13px,#FBBF24 4.5px,transparent 5.5px),radial-gradient(circle at 52px 13px,#34D399 4.5px,transparent 5.5px),#E8EDF3}
.fig figcaption{font-size:13.5px;color:#64748b;padding:9px 14px;background:#fff;border-top:1px solid var(--line)}
.phone{width:min(100%,290px);margin:0 auto;border:10px solid #16294B;border-radius:40px;overflow:hidden;background:#fff;box-shadow:0 22px 46px rgba(31,56,100,.28);position:relative}
.phone:before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:84px;height:16px;background:#16294B;border-radius:0 0 12px 12px;z-index:2}
.phone img{display:block;width:100%;height:auto}
/* số liệu */
.facts{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.fact{text-align:center;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px 16px}
.fact b{display:block;font-size:46px;line-height:1.1;color:var(--blue);letter-spacing:-.02em}
.fact span{color:var(--muted);font-size:15px;display:block;margin-top:6px}
.pills{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0 4px}
.pills span{background:var(--ice2);border:1px solid var(--line);border-radius:999px;padding:5px 14px;font-weight:700;font-size:14.5px;color:var(--navy)}
.two2{display:grid;grid-template-columns:.8fr 1.2fr;gap:34px;align-items:center}
.bignum b{display:block;font-size:92px;line-height:1;color:var(--blue);letter-spacing:-.03em}
.bignum span{color:var(--muted);font-size:18px;display:block;margin-top:8px}
.note{background:linear-gradient(#F7FAFE,#E4EEF8);border:1px solid var(--line);border-radius:var(--r);padding:30px;min-height:220px;display:flex;flex-direction:column;justify-content:center;gap:10px}
.note b{font-size:22px;color:var(--navy)}.note span{color:var(--muted)}
/* bảng */
.tw{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:15.5px;background:#fff;border:1px solid var(--line)}
th,td{text-align:left;padding:13px 16px;border-bottom:1px solid var(--line);vertical-align:top}
thead th{background:var(--navy);color:#fff;font-weight:700}
tbody td:first-child{font-weight:700;color:var(--navy);white-space:nowrap}
tbody tr:nth-child(even){background:var(--ice2)}
/* hỏi đáp */
details{border:1px solid var(--line);border-radius:12px;padding:15px 20px;margin:0 0 10px;background:#fff}
summary{font-weight:700;cursor:pointer;color:var(--navy);font-size:17px}
details[open] summary{margin-bottom:8px}details p{margin:0;color:var(--muted)}
/* liên hệ */
.contact{background:radial-gradient(700px 300px at 100% 0,rgba(91,155,213,.3),transparent 70%),linear-gradient(135deg,#1F3864,#16294B);color:#fff;border-radius:24px;padding:48px;display:grid;grid-template-columns:1.15fr 1fr;gap:40px}
.contact h2{color:#fff}.contact p{color:#D3E1F4;font-size:18px}
.cinfo{display:grid;gap:16px;align-content:start}
.cinfo>div{display:flex;gap:14px;align-items:flex-start;color:#C6DAF3;font-size:15.5px;line-height:1.5}
.cinfo b{color:#fff}.cinfo a{color:#fff;font-weight:700;text-decoration:none}.cinfo a:hover{text-decoration:underline}
.cinfo .ico{color:var(--amber);width:24px;height:24px;margin-top:2px}
/* chân trang */
.foot{background:#0F1E3A;color:#9FB4D3;padding:42px 0 34px;font-size:14.5px}
.foot a{color:#C6DAF3}
.foot .cols{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:30px}
.foot h4{color:#fff;margin:0 0 10px;font-size:15px}.foot p{margin:0 0 6px}.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.foot .brand{color:#fff;margin-bottom:12px}.foot .brand .logo{height:54px}.foot .brand small{color:#9FB4D3;border-left-color:rgba(255,255,255,.25)}
.tm{font-size:12.5px;color:#7F96B8;margin-top:26px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);line-height:1.55}
/* màn hình nhỏ */
@media (max-width:980px){
.top .wrap{gap:12px}
.burger{display:grid;place-items:center;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;color:var(--navy);cursor:pointer}
.top nav{position:absolute;top:66px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 14px 24px rgba(31,56,100,.12);flex-direction:column;align-items:stretch;gap:0;padding:8px 24px 16px;display:none}
.top nav a{padding:12px 0;border-bottom:1px solid var(--line);font-size:16px}.top nav a.btn{margin-top:12px;justify-content:center;border:2px solid transparent}
.nv-chk:checked~nav{display:flex}
.two,.row,.row.wide,.row.wide.flip,.two2,.contact,.g2,.hero-top,.pair{grid-template-columns:1fr}
.row{gap:26px;margin-bottom:54px}.row.flip .viz{order:0}
.g3,.g4,.steps.c3,.steps.c4,.steps.c5,.facts,.strip .wrap{grid-template-columns:repeat(2,1fr)}
.trio{grid-template-columns:1fr;max-width:520px;margin-left:auto;margin-right:auto}
.link{width:auto;flex-direction:row;flex-wrap:wrap;justify-content:center;padding:14px 0;gap:8px 16px}.arr-h{display:none}.arr-v{display:block;width:30px;height:38px;order:1}.link .lb{order:2}.lb1:before{content:"↓ "}.lb2:before{content:"↑ "}
.foot .cols{grid-template-columns:1fr 1fr}.foot .cols>div:first-child{grid-column:1/-1}
.bignum b{font-size:72px}
}
@media (max-width:620px){
.wrap{padding:0 18px}
.s{padding:54px 0}.hero{padding:40px 0 38px}.hero-p{padding:36px 0 36px}
.g3,.g4,.steps.c3,.steps.c4,.steps.c5{grid-template-columns:1fr}
.facts{grid-template-columns:repeat(2,1fr)}.fact b{font-size:36px}
.contact{padding:30px 22px;border-radius:18px}
.btns .btn{flex:1 1 100%;justify-content:center}
.brand small{display:none}
.foot .cols{grid-template-columns:1fr}
.card.big{padding:22px}
}

/* Nova Software (site công ty): phần bổ sung trên nền style.css (chép từ trambetong-site). build.py ghép hai file thành assets/style.css */
.btn-out{border-color:var(--navy);color:var(--navy);background:#fff}.btn-out:hover{background:var(--ice)}
/* hero nền sáng (trang chủ) và tiêu đề trang con */
.hero-b,.hero-page{background:radial-gradient(900px 380px at 92% -12%,rgba(91,155,213,.22),transparent 65%),linear-gradient(180deg,var(--ice2),#fff);border-bottom:1px solid var(--line)}
.hero-b{padding:62px 0 56px}.hero-page{padding:52px 0 42px}
.hero-b .eyebrow,.hero-page .eyebrow{color:var(--blue)}
.hero-b h1,.hero-page h1{color:var(--navy);letter-spacing:-.02em;max-width:980px}
.hero-b h1{font-size:clamp(32px,4.8vw,58px);line-height:1.1;margin:0 0 18px}
.hero-page h1{font-size:clamp(30px,4vw,46px);line-height:1.15;margin:0 0 12px}
.hero-b .lead,.hero-page .lead{font-size:clamp(17px,1.7vw,20px);color:var(--muted);max-width:780px;margin:0}
.hero-b .btns{margin-top:26px}
h1,h2{text-wrap:balance}
/* hàng năng lực: ảnh dài thì cắt bớt phía dưới (bấm vào ảnh để xem đủ) */
.caps .fig img{max-height:460px;object-fit:cover;object-position:left top}
/* ba bước: tại máy, tại nhà máy, báo cáo và cloud */
.flow3{display:grid;grid-template-columns:minmax(0,1fr) 36px minmax(0,1fr) 36px minmax(0,1fr);gap:10px;align-items:start;margin-top:46px}
.stp{min-width:0}
.stp .lbl{display:block;font-size:13px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--blue);margin:0 0 10px}
.stp .d{font-size:15px;color:var(--muted);margin:12px 2px 0}
.flow3 .arw{align-self:center;color:var(--blue);display:grid;place-items:center;margin-top:-30px}
.flow3 .arw .ico{width:30px;height:30px}
/* chip nhảy tới mục trong trang */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin:26px 0 0}
.chips a{display:inline-flex;padding:8px 16px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--navy);font-weight:700;font-size:14.5px;text-decoration:none}
.chips a:hover{border-color:var(--blue);background:var(--ice)}
/* thẻ ngành / sản phẩm */
.card.prod{display:flex;flex-direction:column;gap:6px}
.prod .role{font-size:12.5px;letter-spacing:.07em;text-transform:uppercase;color:#5A6B7D;font-weight:700;margin:0}
.prod h3{margin:0}.prod p{margin:0}
.prod .more{margin-top:auto;padding-top:8px}
.card.prod .fig{margin:0 0 12px}
/* dự án đã làm (trang chủ) */
.band{margin-top:30px;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px 26px}
.band .h3{margin:0 0 4px}.band .fine{margin:0 0 4px}
.proj{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:18px 0 14px}
.proj>div{border:1px dashed #B7C6DB;border-radius:12px;padding:14px 16px}
.proj b{display:block;color:var(--navy);margin-bottom:3px}
.proj span{color:var(--muted);font-size:15px}
.band p{margin:0}
/* hai ảnh xếp dọc trong một cột */
.stack{display:grid;gap:18px}
/* thông tin công ty */
.kv{margin:0;border:1px solid var(--line);border-radius:var(--r);background:#fff;overflow:hidden}
.kv>div{display:grid;grid-template-columns:150px 1fr;gap:14px;padding:13px 18px;border-bottom:1px solid var(--line)}
.kv>div:last-child{border-bottom:0}
.kv dt{font-weight:700;color:var(--navy)}.kv dd{margin:0;overflow-wrap:anywhere}
.kv a{color:var(--blue);font-weight:700;text-decoration:none}.kv a:hover{text-decoration:underline}
.card.svc .btns{margin-top:12px}
.two.top{align-items:start}
/* chân trang bốn cột */
.foot .cols4{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px}
@media (max-width:980px){
.flow3{grid-template-columns:minmax(0,1fr);max-width:620px;margin-left:auto;margin-right:auto}
.flow3 .arw{margin:0;transform:rotate(90deg)}
.proj{grid-template-columns:1fr}
.foot .cols4{grid-template-columns:1fr 1fr}.foot .cols4>div:first-child{grid-column:1/-1}
}
@media (max-width:620px){
.hero-b{padding:40px 0 38px}.hero-page{padding:36px 0 30px}
.band{padding:18px}
.kv>div{grid-template-columns:1fr;gap:2px}
.foot .cols4{grid-template-columns:1fr}
}