:root{
  --bg:#ffffff;
  --surface:#f8fafc;
  --surface-strong:#eef4ff;
  --ink:#0f172a;
  --muted:#5b667a;
  --soft:#94a3b8;
  --line:#e2e8f0;
  --blue:#2563eb;
  --blue-dark:#1d4ed8;
  --violet:#1d4ed8;
  --cyan:#06b6d4;
  --green:#16a34a;
  --orange:#f97316;
  --radius:28px;
  --radius-lg:40px;
  --shadow:0 22px 70px rgba(15,23,42,.10);
  --shadow-soft:0 12px 38px rgba(15,23,42,.08);
  --container:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;line-height:1.6;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,textarea,select{font:inherit}
::selection{background:#dbeafe;color:#0f172a}
.container{width:min(var(--container),calc(100% - 40px));margin-inline:auto}
.skip-link{position:absolute;left:-9999px;top:10px;z-index:1000;background:#fff;color:#111;padding:12px 16px;border-radius:12px}.skip-link:focus{left:10px}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);border-bottom:1px solid rgba(226,232,240,.8);backdrop-filter:saturate(180%) blur(18px)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:78px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:-.02em;color:#0f172a;min-width:max-content}
.brand img{width:44px;height:44px;border-radius:10px;object-fit:contain}.brand small{display:block;font-weight:600;color:var(--muted);font-size:12px;letter-spacing:0;margin-top:1px}
.nav-links{display:flex;align-items:center;gap:6px;padding:6px;border:1px solid rgba(226,232,240,.82);border-radius:999px;background:#fff;box-shadow:0 8px 26px rgba(15,23,42,.04)}
.nav-links a{font-weight:700;color:#475569;font-size:14px;padding:10px 16px;border-radius:999px;transition:.2s ease}.nav-links a:hover,.nav-links a.active{background:#eff6ff;color:#1d4ed8}
.nav-actions{display:flex;align-items:center;gap:10px}.menu-btn{display:none;border:1px solid var(--line);background:#fff;border-radius:999px;padding:10px 14px;font-weight:800;color:#334155}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:999px;padding:13px 20px;font-weight:800;border:1px solid transparent;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease, border .18s ease;cursor:pointer;white-space:nowrap}.btn:hover{transform:translateY(-2px)}.btn-primary{color:#fff;background:linear-gradient(135deg,var(--blue),var(--violet));box-shadow:0 14px 34px rgba(37,99,235,.25)}.btn-primary:hover{box-shadow:0 18px 44px rgba(37,99,235,.32)}.btn-secondary{background:#fff;color:#0f172a;border-color:#dbe2ea;box-shadow:0 8px 26px rgba(15,23,42,.06)}.btn-dark{background:#0f172a;color:#fff}.btn-sm{padding:10px 16px;font-size:14px}
.kicker{display:inline-flex;align-items:center;gap:9px;border:1px solid #dbeafe;background:#fff;color:#1d4ed8;border-radius:999px;padding:8px 13px;font-size:13px;font-weight:850;box-shadow:0 8px 26px rgba(37,99,235,.08)}.kicker .spark{width:9px;height:9px;border-radius:999px;background:linear-gradient(135deg,var(--blue),var(--cyan));box-shadow:0 0 0 5px rgba(37,99,235,.10)}
.hero{position:relative;overflow:hidden;padding:86px 0 54px;background:radial-gradient(circle at 15% 5%,#dbeafe 0,rgba(219,234,254,0) 28%),radial-gradient(circle at 84% 18%,#dbeafe 0,rgba(219,234,254,0) 32%),linear-gradient(180deg,#fff 0%,#f8fbff 100%)}
.hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(148,163,184,.12) 1px,transparent 1px),linear-gradient(90deg,rgba(148,163,184,.12) 1px,transparent 1px);background-size:56px 56px;mask-image:linear-gradient(to bottom,rgba(0,0,0,.8),transparent 72%);pointer-events:none}.hero-grid{position:relative;display:grid;grid-template-columns:1.03fr .97fr;gap:54px;align-items:center}.hero h1{font-size:clamp(42px,6vw,76px);line-height:.98;margin:22px 0 24px;letter-spacing:-.06em}.gradient-text{background:linear-gradient(135deg,#2563eb 0%,#1d4ed8 54%,#06b6d4 100%);-webkit-background-clip:text;background-clip:text;color:transparent}.lead{font-size:clamp(18px,2vw,21px);line-height:1.72;color:#4b5568;max-width:720px;margin:0}.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}.hero-proof{display:grid;grid-template-columns:repeat(3,1fr);gap:13px;margin-top:34px;max-width:700px}.proof-card{position:relative;overflow:hidden;border-radius:22px;padding:18px 18px 16px;border:1px solid rgba(255,255,255,.7);box-shadow:0 16px 34px rgba(15,23,42,.10);transition:transform .2s ease,box-shadow .2s ease}.proof-card:hover{transform:translateY(-4px);box-shadow:0 24px 48px rgba(15,23,42,.16)}.proof-card:before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px}.proof-card strong{display:block;font-size:20px;letter-spacing:-.02em}.proof-card span{display:block;font-size:13px;color:#475569;margin-top:3px}
.proof-card:nth-child(1){background:linear-gradient(140deg,#eff6ff,#dbeafe)}.proof-card:nth-child(1):before{background:linear-gradient(#2563eb,#1d4ed8)}.proof-card:nth-child(1) strong{color:#1d4ed8}
.proof-card:nth-child(2){background:linear-gradient(140deg,#ecfeff,#cffafe)}.proof-card:nth-child(2):before{background:linear-gradient(#06b6d4,#0891b2)}.proof-card:nth-child(2) strong{color:#0e7490}
.proof-card:nth-child(3){background:linear-gradient(140deg,#eef4ff,#e0e7ff)}.proof-card:nth-child(3):before{background:linear-gradient(#4f46e5,#1d4ed8)}.proof-card:nth-child(3) strong{color:#4338ca}.hero-visual{position:relative}.hero-visual:before{content:"";position:absolute;inset:8% -4% -4% 6%;border-radius:42px;background:linear-gradient(135deg,rgba(37,99,235,.16),rgba(29,78,216,.16));filter:blur(26px)}.hero-visual img{position:relative;border-radius:42px;box-shadow:0 34px 96px rgba(15,23,42,.20)}
.section{padding:86px 0}.section-muted{background:#f8fafc}.section-dark{background:#0b1220;color:#fff;position:relative;overflow:hidden}.section-dark:before{content:"";position:absolute;inset:auto -10% -50% -10%;height:360px;background:radial-gradient(circle,#2563eb 0,transparent 62%);opacity:.18}.section-head{max-width:760px;margin-bottom:40px}.section-head.center{text-align:center;margin-inline:auto}.section-head h2,.page-hero h1{font-size:clamp(34px,4vw,56px);line-height:1.06;letter-spacing:-.045em;margin:16px 0}.section-head p,.page-hero p{font-size:18px;color:#64748b;margin:0;max-width:760px}.section-dark .section-head p{color:#cbd5e1}.page-hero{padding:72px 0 48px;background:linear-gradient(180deg,#fff,#f8fbff)}.page-hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:52px;align-items:center}.page-hero img{border-radius:40px;box-shadow:var(--shadow)}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.card{background:#fff;border:1px solid #e7edf5;border-radius:var(--radius);padding:28px;box-shadow:0 10px 34px rgba(15,23,42,.05)}.card:hover{box-shadow:var(--shadow-soft)}.card h3{font-size:22px;line-height:1.2;letter-spacing:-.025em;margin:0 0 12px}.card p{color:#64748b;margin:0}.icon{width:62px;height:62px;border-radius:20px;display:grid;place-items:center;font-size:30px;line-height:1;color:#fff;margin-bottom:20px;background:linear-gradient(135deg,#2563eb,#06b6d4);box-shadow:0 12px 26px rgba(37,99,235,.30)}.icon svg{width:30px;height:30px}
.grid-4 .card:nth-child(1) .icon{background:linear-gradient(135deg,#2563eb,#1d4ed8);box-shadow:0 12px 26px rgba(37,99,235,.32)}
.grid-4 .card:nth-child(2) .icon{background:linear-gradient(135deg,#06b6d4,#0891b2);box-shadow:0 12px 26px rgba(6,182,212,.32)}
.grid-4 .card:nth-child(3) .icon{background:linear-gradient(135deg,#4f46e5,#1d4ed8);box-shadow:0 12px 26px rgba(79,70,229,.30)}
.grid-4 .card:nth-child(4) .icon{background:linear-gradient(135deg,#3b82f6,#06b6d4);box-shadow:0 12px 26px rgba(59,130,246,.30)}.mini-tag{display:inline-flex;padding:7px 11px;border-radius:999px;background:#f1f5f9;color:#334155;font-weight:800;font-size:12px;margin-bottom:14px}.feature-list{list-style:none;margin:18px 0 0;padding:0;display:grid;gap:12px}.feature-list li{display:flex;gap:11px;color:#475569}.feature-list li:before{content:"";width:18px;height:18px;margin-top:3px;flex:0 0 auto;border-radius:999px;background:linear-gradient(135deg,#22c55e,#06b6d4);box-shadow:inset 0 0 0 5px rgba(255,255,255,.65)}
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.product-card{position:relative;display:flex;flex-direction:column;overflow:hidden;border-radius:34px;background:#fff;border:1px solid #e7edf5;box-shadow:0 14px 48px rgba(15,23,42,.06);transition:.2s ease}.product-card:hover{transform:translateY(-5px);box-shadow:0 28px 70px rgba(15,23,42,.12)}.product-card img{width:100%;aspect-ratio:1.42/1;object-fit:cover;background:#f8fafc}.product-body{padding:25px}.product-code{font-size:12px;font-weight:900;letter-spacing:.08em;color:#2563eb;text-transform:uppercase}.product-body h3{font-size:23px;line-height:1.16;margin:10px 0 8px;letter-spacing:-.03em}.product-body p{color:#64748b;margin:0}.product-link{margin-top:18px;color:#1d4ed8;font-weight:900;display:inline-flex}.product-chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}.chip{font-size:12px;font-weight:800;color:#334155;background:#f1f5f9;border:1px solid #e2e8f0;border-radius:999px;padding:7px 10px}
.architecture{display:grid;grid-template-columns:.95fr 1.05fr;gap:50px;align-items:center}.architecture img{border-radius:40px;box-shadow:var(--shadow-soft)}.step-list{display:grid;gap:14px}.step{display:grid;grid-template-columns:52px 1fr;gap:16px;align-items:start;background:#fff;border:1px solid #e7edf5;border-radius:24px;padding:20px}.step-number{width:52px;height:52px;border-radius:18px;display:grid;place-items:center;color:#fff;font-weight:900;background:linear-gradient(135deg,#2563eb,#1d4ed8)}.step h3{margin:1px 0 4px;font-size:19px}.step p{margin:0;color:#64748b}.dark-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:30px;padding:28px}.dark-card p{color:#cbd5e1}.metric-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.metric{background:#fff;border:1px solid #e7edf5;border-radius:28px;padding:24px}.metric strong{font-size:32px;letter-spacing:-.05em;display:block}.metric span{color:#64748b;font-weight:700}
.about-principles{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center}.principle-list{display:grid;gap:14px}.principle{padding:22px;border-radius:26px;background:#fff;border:1px solid #e7edf5;display:flex;gap:16px;align-items:flex-start}.principle b{display:grid;place-items:center;flex:0 0 38px;height:38px;border-radius:14px;background:#eff6ff;color:#1d4ed8}.principle h3{font-size:19px;margin:0 0 4px}.principle p{margin:0;color:#64748b}.image-panel{border-radius:40px;padding:16px;background:linear-gradient(135deg,#eff6ff,#eef4ff);box-shadow:var(--shadow-soft)}.image-panel img{border-radius:30px}
.product-detail{display:grid;grid-template-columns:.82fr 1.18fr;gap:34px;align-items:start;padding:30px;border:1px solid #e7edf5;border-radius:40px;background:#fff;box-shadow:0 12px 44px rgba(15,23,42,.05);margin-bottom:28px}.product-detail:nth-child(even){grid-template-columns:1.18fr .82fr}.product-detail:nth-child(even) .detail-media{order:2}.detail-media{position:sticky;top:108px}.detail-media img{border-radius:30px;box-shadow:0 18px 46px rgba(15,23,42,.10)}.detail-content{padding:8px 8px 8px 0}.detail-content h2{font-size:clamp(30px,3vw,44px);line-height:1.08;letter-spacing:-.045em;margin:10px 0 12px}.detail-intro{font-size:18px;color:#475569;margin:0 0 22px}.detail-blocks{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:22px}.detail-block{border:1px solid #e7edf5;border-radius:24px;padding:20px;background:#f8fafc}.detail-block h3{margin:0 0 8px;font-size:17px}.detail-block p{margin:0;color:#64748b}.scope-box{margin-top:22px;border-radius:24px;padding:22px;background:linear-gradient(135deg,#0f172a,#172554);color:#fff}.scope-box p{margin:0;color:#dbeafe}.compare-box{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:18px}.compare-item{border-radius:22px;padding:18px;background:#eff6ff;border:1px solid #bfdbfe}.compare-item strong{display:block;color:#1d4ed8;margin-bottom:6px}.compare-item p{margin:0;color:#475569}.outcomes{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px}.outcome{border-radius:22px;padding:18px;background:#fff;border:1px solid #e7edf5}.outcome b{display:block;font-size:18px;margin-bottom:4px}.outcome span{color:#64748b;font-size:14px}
.cta-band{border-radius:44px;background:linear-gradient(135deg,#0f172a,#102a5c 55%,#0e7490);color:#fff;padding:48px;display:grid;grid-template-columns:1.1fr .9fr;gap:30px;align-items:center;overflow:hidden;position:relative}.cta-band:before{content:"";position:absolute;right:-90px;top:-110px;width:310px;height:310px;border-radius:999px;background:#38bdf8;opacity:.23}.cta-band h2{font-size:clamp(30px,4vw,48px);line-height:1.08;letter-spacing:-.045em;margin:0 0 14px}.cta-band p{color:#dbeafe;margin:0;font-size:18px}.cta-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-end;position:relative}.cta-band .btn-secondary{background:#fff;color:#0f172a}
.contact-layout{display:grid;grid-template-columns:.88fr 1.12fr;gap:34px;align-items:start}.contact-card{border:1px solid #e7edf5;background:#fff;border-radius:36px;padding:30px;box-shadow:var(--shadow-soft)}.contact-form{display:grid;gap:16px}.form-row{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.field label{display:block;font-weight:850;margin-bottom:8px;color:#334155}.field input,.field textarea,.field select{width:100%;border:1px solid #dbe2ea;border-radius:18px;background:#fff;padding:14px 15px;color:#0f172a;outline:none;transition:.2s}.field textarea{min-height:150px;resize:vertical}.field input:focus,.field textarea:focus,.field select:focus{border-color:#2563eb;box-shadow:0 0 0 4px rgba(37,99,235,.11)}.contact-list{display:grid;gap:14px;margin-top:24px}.contact-item{display:flex;gap:14px;border:1px solid #e7edf5;border-radius:24px;padding:17px;background:#f8fafc}.contact-item b{display:block}.contact-item span{color:#64748b}.contact-visual img{border-radius:36px;box-shadow:var(--shadow-soft)}.notice{font-size:13px;color:#64748b;margin-top:10px}
.footer{border-top:1px solid #e7edf5;background:#fff;padding:34px 0}.footer-grid{display:grid;grid-template-columns:1.1fr repeat(3,.5fr);gap:28px}.footer p,.footer a{color:#64748b}.footer a:hover{color:#1d4ed8}.footer h3{font-size:14px;text-transform:uppercase;letter-spacing:.08em;color:#0f172a}.footer .brand{margin-bottom:12px}.footer-bottom{border-top:1px solid #e7edf5;margin-top:28px;padding-top:18px;color:#64748b;font-size:14px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.reveal{opacity:0;transform:translateY(16px);transition:opacity .65s ease,transform .65s ease}.reveal.is-visible{opacity:1;transform:none}
@media (max-width:1000px){.hero-grid,.page-hero-grid,.architecture,.about-principles,.contact-layout,.cta-band{grid-template-columns:1fr}.hero{padding-top:56px}.product-grid,.grid-3{grid-template-columns:repeat(2,1fr)}.grid-4,.metric-row{grid-template-columns:repeat(2,1fr)}.product-detail,.product-detail:nth-child(even){grid-template-columns:1fr}.product-detail:nth-child(even) .detail-media{order:0}.detail-media{position:relative;top:auto}.cta-actions{justify-content:flex-start}.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:820px){.nav-links{position:fixed;inset:78px 20px auto 20px;display:none;flex-direction:column;align-items:stretch;border-radius:24px;padding:12px}.nav-links.is-open{display:flex}.nav-links a{padding:14px 16px}.nav-actions .btn{display:none}.menu-btn{display:inline-flex}.hero-proof{grid-template-columns:1fr}.form-row,.detail-blocks,.compare-box,.outcomes{grid-template-columns:1fr}.product-grid,.grid-2,.grid-3,.grid-4,.metric-row{grid-template-columns:1fr}.section{padding:64px 0}.page-hero{padding:54px 0 34px}.product-detail{padding:18px;border-radius:30px}.detail-content{padding:0}.cta-band{padding:30px;border-radius:32px}.footer-grid{grid-template-columns:1fr}}
@media (max-width:520px){.container{width:min(100% - 28px,var(--container))}.brand small{display:none}.brand img{width:38px;height:38px}.hero h1{font-size:42px}.section-head h2,.page-hero h1{font-size:34px}.hero-actions .btn{width:100%}.hero-visual img,.page-hero img{border-radius:28px}.product-card{border-radius:28px}.nav{min-height:70px}.nav-links{inset:70px 14px auto 14px}.contact-card{padding:22px;border-radius:28px}}

/* === Màu nhấn riêng cho 6 thẻ sản phẩm === */
.product-grid .product-card{position:relative}
.product-grid .product-card:before{content:"";position:absolute;left:0;right:0;top:0;height:5px;z-index:3}
.product-grid .product-card:nth-child(1):before{background:linear-gradient(90deg,#2563eb,#1d4ed8)}
.product-grid .product-card:nth-child(1) .product-code,.product-grid .product-card:nth-child(1) .product-link{color:#1d4ed8}
.product-grid .product-card:nth-child(1) img{background:#eff6ff}
.product-grid .product-card:nth-child(2):before{background:linear-gradient(90deg,#06b6d4,#0891b2)}
.product-grid .product-card:nth-child(2) .product-code,.product-grid .product-card:nth-child(2) .product-link{color:#0e7490}
.product-grid .product-card:nth-child(2) img{background:#ecfeff}
.product-grid .product-card:nth-child(3):before{background:linear-gradient(90deg,#4f46e5,#1d4ed8)}
.product-grid .product-card:nth-child(3) .product-code,.product-grid .product-card:nth-child(3) .product-link{color:#4338ca}
.product-grid .product-card:nth-child(3) img{background:#eef2ff}
.product-grid .product-card:nth-child(4):before{background:linear-gradient(90deg,#0ea5e9,#06b6d4)}
.product-grid .product-card:nth-child(4) .product-code,.product-grid .product-card:nth-child(4) .product-link{color:#0369a1}
.product-grid .product-card:nth-child(4) img{background:#f0f9ff}
.product-grid .product-card:nth-child(5):before{background:linear-gradient(90deg,#0ea5a4,#06b6d4)}
.product-grid .product-card:nth-child(5) .product-code,.product-grid .product-card:nth-child(5) .product-link{color:#0f766e}
.product-grid .product-card:nth-child(5) img{background:#f0fdfa}
.product-grid .product-card:nth-child(6):before{background:linear-gradient(90deg,#3b82f6,#22d3ee)}
.product-grid .product-card:nth-child(6) .product-code,.product-grid .product-card:nth-child(6) .product-link{color:#1d4ed8}
.product-grid .product-card:nth-child(6) img{background:#eff6ff}

/* === Nền gradient nhẹ cho 4 thẻ "Định vị giải pháp" === */
.grid-4 .card{transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.grid-4 .card:hover{transform:translateY(-5px)}
.grid-4 .card:nth-child(1){background:linear-gradient(160deg,#ffffff,#eef5ff);border-color:#dbeafe}
.grid-4 .card:nth-child(1):hover{box-shadow:0 22px 46px rgba(37,99,235,.16)}
.grid-4 .card:nth-child(2){background:linear-gradient(160deg,#ffffff,#ecfdff);border-color:#cffafe}
.grid-4 .card:nth-child(2):hover{box-shadow:0 22px 46px rgba(6,182,212,.16)}
.grid-4 .card:nth-child(3){background:linear-gradient(160deg,#ffffff,#eef0ff);border-color:#e0e7ff}
.grid-4 .card:nth-child(3):hover{box-shadow:0 22px 46px rgba(79,70,229,.15)}
.grid-4 .card:nth-child(4){background:linear-gradient(160deg,#ffffff,#eef7ff);border-color:#dbeafe}
.grid-4 .card:nth-child(4):hover{box-shadow:0 22px 46px rgba(59,130,246,.16)}

/* === Màu riêng cho 4 bước "Kiến trúc triển khai" === */
.step-list .step{transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.step-list .step:hover{transform:translateX(4px)}
.step-list .step:nth-child(1){background:linear-gradient(150deg,#ffffff,#eef5ff);border-color:#dbeafe}
.step-list .step:nth-child(1) .step-number{background:linear-gradient(135deg,#2563eb,#1d4ed8);box-shadow:0 10px 20px rgba(37,99,235,.3)}
.step-list .step:nth-child(1):hover{box-shadow:0 18px 38px rgba(37,99,235,.16)}
.step-list .step:nth-child(2){background:linear-gradient(150deg,#ffffff,#ecfdff);border-color:#cffafe}
.step-list .step:nth-child(2) .step-number{background:linear-gradient(135deg,#06b6d4,#0891b2);box-shadow:0 10px 20px rgba(6,182,212,.3)}
.step-list .step:nth-child(2):hover{box-shadow:0 18px 38px rgba(6,182,212,.16)}
.step-list .step:nth-child(3){background:linear-gradient(150deg,#ffffff,#eef0ff);border-color:#e0e7ff}
.step-list .step:nth-child(3) .step-number{background:linear-gradient(135deg,#4f46e5,#1d4ed8);box-shadow:0 10px 20px rgba(79,70,229,.28)}
.step-list .step:nth-child(3):hover{box-shadow:0 18px 38px rgba(79,70,229,.15)}
.step-list .step:nth-child(4){background:linear-gradient(150deg,#ffffff,#eef7ff);border-color:#dbeafe}
.step-list .step:nth-child(4) .step-number{background:linear-gradient(135deg,#3b82f6,#06b6d4);box-shadow:0 10px 20px rgba(59,130,246,.28)}
.step-list .step:nth-child(4):hover{box-shadow:0 18px 38px rgba(59,130,246,.16)}

/* === 6 thẻ năng lực (grid-3) trang Giới thiệu === */
.grid-3 .card{position:relative;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.grid-3 .card:hover{transform:translateY(-5px)}
.grid-3 .card:nth-child(1){background:linear-gradient(160deg,#fff,#eef5ff);border-color:#dbeafe}
.grid-3 .card:nth-child(1) .icon{background:linear-gradient(135deg,#2563eb,#1d4ed8);box-shadow:0 12px 24px rgba(37,99,235,.3)}
.grid-3 .card:nth-child(2){background:linear-gradient(160deg,#fff,#ecfdff);border-color:#cffafe}
.grid-3 .card:nth-child(2) .icon{background:linear-gradient(135deg,#06b6d4,#0891b2);box-shadow:0 12px 24px rgba(6,182,212,.3)}
.grid-3 .card:nth-child(3){background:linear-gradient(160deg,#fff,#eef0ff);border-color:#e0e7ff}
.grid-3 .card:nth-child(3) .icon{background:linear-gradient(135deg,#4f46e5,#1d4ed8);box-shadow:0 12px 24px rgba(79,70,229,.28)}
.grid-3 .card:nth-child(4){background:linear-gradient(160deg,#fff,#eef9ff);border-color:#e0f2fe}
.grid-3 .card:nth-child(4) .icon{background:linear-gradient(135deg,#0ea5e9,#06b6d4);box-shadow:0 12px 24px rgba(14,165,233,.28)}
.grid-3 .card:nth-child(5){background:linear-gradient(160deg,#fff,#effdfa);border-color:#ccfbf1}
.grid-3 .card:nth-child(5) .icon{background:linear-gradient(135deg,#0ea5a4,#06b6d4);box-shadow:0 12px 24px rgba(14,165,164,.28)}
.grid-3 .card:nth-child(6){background:linear-gradient(160deg,#fff,#eef6ff);border-color:#dbeafe}
.grid-3 .card:nth-child(6) .icon{background:linear-gradient(135deg,#3b82f6,#22d3ee);box-shadow:0 12px 24px rgba(59,130,246,.28)}

/* === 4 ô lĩnh vực ứng dụng (metric) === */
.metric-row .metric{position:relative;overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.metric-row .metric:before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px}
.metric-row .metric:hover{transform:translateY(-5px)}
.metric-row .metric:nth-child(1){background:linear-gradient(150deg,#fff,#eef5ff);border-color:#dbeafe}
.metric-row .metric:nth-child(1):before{background:linear-gradient(#2563eb,#1d4ed8)}.metric-row .metric:nth-child(1) strong{color:#1d4ed8}
.metric-row .metric:nth-child(2){background:linear-gradient(150deg,#fff,#ecfdff);border-color:#cffafe}
.metric-row .metric:nth-child(2):before{background:linear-gradient(#06b6d4,#0891b2)}.metric-row .metric:nth-child(2) strong{color:#0e7490}
.metric-row .metric:nth-child(3){background:linear-gradient(150deg,#fff,#eef0ff);border-color:#e0e7ff}
.metric-row .metric:nth-child(3):before{background:linear-gradient(#4f46e5,#1d4ed8)}.metric-row .metric:nth-child(3) strong{color:#4338ca}
.metric-row .metric:nth-child(4){background:linear-gradient(150deg,#fff,#eef9ff);border-color:#e0f2fe}
.metric-row .metric:nth-child(4):before{background:linear-gradient(#0ea5e9,#06b6d4)}.metric-row .metric:nth-child(4) strong{color:#0369a1}

/* === 4 thẻ năng lực ở khối tối (trang chủ) === */
.section-dark .dark-card{position:relative;overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,background .2s ease}
.section-dark .dark-card:hover{transform:translateY(-4px)}
.section-dark .dark-card:before{content:"";position:absolute;left:0;right:0;top:0;height:4px}
.section-dark .dark-card:nth-child(1){background:rgba(59,130,246,.12);border-color:rgba(59,130,246,.4)}
.section-dark .dark-card:nth-child(1):before{background:linear-gradient(90deg,#3b82f6,#60a5fa)}.section-dark .dark-card:nth-child(1) h3{color:#93c5fd}
.section-dark .dark-card:nth-child(2){background:rgba(6,182,212,.12);border-color:rgba(6,182,212,.4)}
.section-dark .dark-card:nth-child(2):before{background:linear-gradient(90deg,#06b6d4,#22d3ee)}.section-dark .dark-card:nth-child(2) h3{color:#67e8f9}
.section-dark .dark-card:nth-child(3){background:rgba(99,102,241,.14);border-color:rgba(99,102,241,.4)}
.section-dark .dark-card:nth-child(3):before{background:linear-gradient(90deg,#6366f1,#818cf8)}.section-dark .dark-card:nth-child(3) h3{color:#a5b4fc}
.section-dark .dark-card:nth-child(4){background:rgba(14,165,233,.12);border-color:rgba(14,165,233,.4)}
.section-dark .dark-card:nth-child(4):before{background:linear-gradient(90deg,#0ea5e9,#7dd3fc)}.section-dark .dark-card:nth-child(4) h3{color:#7dd3fc}

/* === 4 nguyên tắc (trang Giới thiệu) === */
.principle-list .principle{transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.principle-list .principle:hover{transform:translateX(4px)}
.principle-list .principle b{color:#fff}
.principle-list .principle:nth-child(1){background:linear-gradient(150deg,#fff,#eef5ff);border-color:#dbeafe}.principle-list .principle:nth-child(1) b{background:linear-gradient(135deg,#2563eb,#1d4ed8)}
.principle-list .principle:nth-child(2){background:linear-gradient(150deg,#fff,#ecfdff);border-color:#cffafe}.principle-list .principle:nth-child(2) b{background:linear-gradient(135deg,#06b6d4,#0891b2)}
.principle-list .principle:nth-child(3){background:linear-gradient(150deg,#fff,#eef0ff);border-color:#e0e7ff}.principle-list .principle:nth-child(3) b{background:linear-gradient(135deg,#4f46e5,#1d4ed8)}
.principle-list .principle:nth-child(4){background:linear-gradient(150deg,#fff,#eef9ff);border-color:#e0f2fe}.principle-list .principle:nth-child(4) b{background:linear-gradient(135deg,#0ea5e9,#06b6d4)}

/* === detail-block + outcome (trang Sản phẩm) === */
.detail-blocks .detail-block{border-left-width:4px;transition:transform .18s ease,box-shadow .18s ease}
.detail-blocks .detail-block:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(15,23,42,.08)}
.detail-blocks .detail-block:nth-child(1){border-left-color:#2563eb}.detail-blocks .detail-block:nth-child(1) h3{color:#1d4ed8}
.detail-blocks .detail-block:nth-child(2){border-left-color:#06b6d4}.detail-blocks .detail-block:nth-child(2) h3{color:#0e7490}
.detail-blocks .detail-block:nth-child(3){border-left-color:#4f46e5}.detail-blocks .detail-block:nth-child(3) h3{color:#4338ca}
.detail-blocks .detail-block:nth-child(4){border-left-color:#0ea5e9}.detail-blocks .detail-block:nth-child(4) h3{color:#0369a1}
.outcomes .outcome{position:relative;overflow:hidden;transition:transform .18s ease,box-shadow .18s ease}
.outcomes .outcome:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(15,23,42,.08)}
.outcomes .outcome:before{content:"";position:absolute;left:0;right:0;top:0;height:4px}
.outcomes .outcome:nth-child(1){background:linear-gradient(160deg,#fff,#eef5ff)}.outcomes .outcome:nth-child(1):before{background:linear-gradient(90deg,#2563eb,#1d4ed8)}.outcomes .outcome:nth-child(1) b{color:#1d4ed8}
.outcomes .outcome:nth-child(2){background:linear-gradient(160deg,#fff,#ecfdff)}.outcomes .outcome:nth-child(2):before{background:linear-gradient(90deg,#06b6d4,#0891b2)}.outcomes .outcome:nth-child(2) b{color:#0e7490}
.outcomes .outcome:nth-child(3){background:linear-gradient(160deg,#fff,#eef0ff)}.outcomes .outcome:nth-child(3):before{background:linear-gradient(90deg,#4f46e5,#1d4ed8)}.outcomes .outcome:nth-child(3) b{color:#4338ca}

/* === contact-item icons (trang Liên hệ) === */
.contact-list .contact-item{transition:transform .18s ease,box-shadow .18s ease,border-color .2s ease}
.contact-list .contact-item:hover{transform:translateY(-3px)}
.contact-list .contact-item .icon{width:50px;height:50px;font-size:20px;border-radius:16px}
.contact-list .contact-item:nth-child(1){background:linear-gradient(150deg,#fff,#eef5ff);border-color:#dbeafe}.contact-list .contact-item:nth-child(1) .icon{background:linear-gradient(135deg,#2563eb,#1d4ed8)}
.contact-list .contact-item:nth-child(2){background:linear-gradient(150deg,#fff,#ecfdff);border-color:#cffafe}.contact-list .contact-item:nth-child(2) .icon{background:linear-gradient(135deg,#06b6d4,#0891b2)}
.contact-list .contact-item:nth-child(3){background:linear-gradient(150deg,#fff,#eef0ff);border-color:#e0e7ff}.contact-list .contact-item:nth-child(3) .icon{background:linear-gradient(135deg,#4f46e5,#1d4ed8)}
.contact-list .contact-item .icon{flex:0 0 50px}