:root{--navy:#071525;--blue:#0b5cff;--blue2:#083d9c;--red:#e31b23;--ink:#111827;--muted:#64748b;--bg:#f7f9fc;--white:#fff;--line:#e5eaf1;--shadow:0 18px 50px rgba(7,21,37,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,Arial,Helvetica,sans-serif;color:var(--ink);background:var(--white);line-height:1.6}a{color:inherit}.container{width:min(1180px,92%);margin:auto}.topbar{background:var(--navy);color:#dbe6f5;font-size:12px}.topbar .container{display:flex;justify-content:space-between;padding:8px 0}.header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.nav{min-height:76px;display:flex;align-items:center;gap:25px}.logo{font-weight:950;font-size:23px;letter-spacing:-1.5px;text-decoration:none;white-space:nowrap}.logo span{color:var(--blue)}.main-nav{display:flex;gap:21px;align-items:center;margin-left:auto}.main-nav a{font-size:12px;font-weight:800;text-decoration:none}.main-nav a:hover{color:var(--blue)}.header-actions{display:flex;gap:8px;align-items:center}.zalo,.phone{padding:9px 12px;border-radius:7px;text-decoration:none;font-size:12px;font-weight:900}.zalo{border:1px solid var(--blue);color:var(--blue)}.phone{background:var(--red);color:#fff}.menu-toggle{display:none;border:1px solid var(--line);background:#fff;padding:9px;border-radius:6px}
.hero{background:linear-gradient(120deg,#071525 0%,#0b2342 60%,#0b5cff 160%);color:#fff;padding:82px 0 72px}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}.eyebrow{font-size:11px;letter-spacing:2px;font-weight:900;color:#6b87aa;margin-bottom:13px}.hero .eyebrow{color:#9fc2ff}.hero h1{font-size:clamp(42px,5.7vw,72px);line-height:1.02;letter-spacing:-3px;margin:0 0 23px}.hero h1 span{color:#65a0ff}.hero p{font-size:17px;color:#d8e3f2;max-width:690px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin:30px 0}.btn{display:inline-flex;justify-content:center;align-items:center;gap:7px;padding:13px 19px;border-radius:7px;font-size:12px;font-weight:900;text-decoration:none;border:1px solid transparent;cursor:pointer}.btn-primary{background:var(--red);color:#fff}.btn-blue{background:var(--blue);color:#fff}.btn-white{background:#fff;color:var(--navy)}.btn-outline{border-color:#7890ad;color:#fff;background:transparent}.stats{display:flex;gap:38px;margin-top:34px}.stats b{display:block;font-size:21px}.stats span{font-size:11px;color:#9db0c7}.hero-visual{background:#fff;border-radius:15px;padding:9px;box-shadow:0 25px 70px rgba(0,0,0,.25)}.hero-visual img{width:100%;height:380px;object-fit:cover;border-radius:10px;display:block}.hero-visual .caption{color:var(--navy);padding:13px 14px 7px;font-size:11px;font-weight:900}
.section{padding:78px 0}.section.alt{background:var(--bg)}.section.dark{background:var(--navy);color:#fff}.section-head{display:flex;justify-content:space-between;align-items:end;gap:40px;margin-bottom:32px}.section-head h2{margin:0;font-size:42px;line-height:1.08;letter-spacing:-1.8px}.section-head p{max-width:520px;color:var(--muted);margin:0}.dark .section-head p{color:#aebbd0}.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:17px}.card{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;box-shadow:0 6px 22px rgba(7,21,37,.04);transition:.2s}.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.card-img{height:205px;background:#eef2f6;overflow:hidden}.card-img img{width:100%;height:100%;object-fit:cover;display:block}.card-body{padding:20px}.card h3{font-size:18px;margin:0 0 8px}.card p{font-size:13px;color:var(--muted);min-height:63px;margin:0 0 15px}.link{font-size:12px;font-weight:900;color:var(--blue);text-decoration:none}.dark .card{background:#0f2137;border-color:#213854}.dark .card h3,.dark .card p{color:#fff}.dark .card p{color:#aebbd0}
.solutions{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.solution{padding:28px;border:1px solid var(--line);border-radius:12px;background:#fff;text-decoration:none;display:grid;grid-template-columns:52px 1fr;gap:8px 17px}.solution .num{font-size:12px;color:var(--blue);font-weight:900}.solution h3{margin:0;font-size:22px}.solution p{grid-column:2;margin:0;color:var(--muted);font-size:13px}.benefits{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.benefit{padding:25px;border-radius:12px;background:var(--bg);border:1px solid var(--line)}.benefit b{font-size:17px}.benefit p{font-size:13px;color:var(--muted);margin-bottom:0}.cta{background:linear-gradient(100deg,var(--blue2),var(--blue));color:#fff;padding:48px 0}.cta-grid{display:flex;align-items:center;justify-content:space-between;gap:35px}.cta h2{font-size:34px;margin:0 0 8px}.cta p{margin:0;color:#dbe8ff}
.form-section{background:#eef3f9}.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:60px;align-items:start}.contact-box h2{font-size:42px;line-height:1.05;margin:0 0 16px}.contact-box p{color:var(--muted)}.contact-list{margin-top:28px}.contact-list div{padding:11px 0;border-bottom:1px solid var(--line);font-size:14px}.contact-list a{text-decoration:none}.lead-form{background:#fff;border:1px solid var(--line);padding:28px;border-radius:12px;box-shadow:var(--shadow)}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.field{margin-bottom:14px}.field.full{grid-column:1/-1}.field label{font-size:11px;font-weight:900;display:block}.field input,.field select,.field textarea{width:100%;margin-top:6px;padding:12px;border:1px solid #ccd5e1;border-radius:7px;background:#fbfcfe;font:inherit;font-size:13px}.field textarea{resize:vertical}.lead-form button{width:100%}.form-msg{font-size:12px;margin-top:10px;font-weight:800}.success{color:#16803b}.error{color:#c62828}.form-msg a{color:inherit}
.breadcrumb{padding:18px 0;font-size:12px;color:var(--muted)}.page-hero{background:var(--navy);color:#fff;padding:55px 0}.page-hero h1{font-size:48px;line-height:1.05;margin:0 0 12px;letter-spacing:-2px}.page-hero p{color:#c7d5e8;max-width:760px}.spec-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden}.spec-table td,.spec-table th{padding:13px;border-bottom:1px solid var(--line);text-align:left;font-size:13px}.spec-table th{background:#f2f5f9}.note{background:#f4f8ff;border-left:4px solid var(--blue);padding:18px;border-radius:6px;color:#44546a}.footer{background:#071525;color:#d9e3f0;padding:55px 0 0}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px}.footer .logo{color:#fff}.footer p,.footer a{font-size:12px;color:#94a6bd}.footer a{display:block;text-decoration:none;margin:8px 0}.footer b{display:block;color:#fff;margin-bottom:12px}.copyright{border-top:1px solid #20334a;text-align:center;padding:16px;color:#71839a;font-size:10px}
@media(max-width:1050px){.main-nav{display:none}.menu-toggle{display:block}.header-actions{margin-left:auto}.main-nav.open{display:flex;position:absolute;left:0;right:0;top:76px;background:#fff;border-bottom:1px solid var(--line);padding:18px 4%;flex-direction:column;align-items:flex-start}.hero-grid,.contact-grid{grid-template-columns:1fr}.cards{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr}.hero-visual img{height:320px}}
@media(max-width:650px){.topbar .container{display:block;text-align:center}.phone{display:none}.hero{padding:58px 0}.hero h1{font-size:43px;letter-spacing:-2px}.hero p{font-size:15px}.stats{gap:17px}.stats b{font-size:16px}.section{padding:58px 0}.section-head{display:block}.section-head h2,.contact-box h2{font-size:34px}.section-head p{margin-top:14px}.cards,.solutions,.benefits,.form-grid,.footer-grid{grid-template-columns:1fr}.cta-grid{display:block}.cta .btn{margin-top:18px}.hero-visual img{height:250px}.page-hero h1{font-size:38px}.zalo{padding:8px}.nav{gap:10px}.logo{font-size:19px}}