:root{
  --brand:#0a66c2;
  --brand-dark:#08518f;
  --accent:#ff7a00;
  --bg:#ffffff;
  --bg-alt:#f5f8fc;
  --bg-dark:#0b1f3a;
  --text:#1a2238;
  --muted:#5b6478;
  --border:#e3e8f0;
  --radius:10px;
  --shadow:0 6px 24px rgba(10,30,60,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--text);background:var(--bg);line-height:1.55}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4,h5{font-weight:700;line-height:1.2;margin:0 0 .5em}
h1{font-size:2.6rem}
h2{font-size:2rem}
h3{font-size:1.25rem}
p{margin:0 0 1em;color:var(--muted)}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* Buttons */
.btn{display:inline-block;padding:12px 22px;border-radius:var(--radius);font-weight:600;border:1px solid transparent;cursor:pointer;transition:all .2s;text-align:center;font-size:.95rem}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);text-decoration:none}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.btn-ghost:hover{background:rgba(255,255,255,.12);text-decoration:none}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-outline:hover{background:var(--brand);color:#fff;text-decoration:none}
.btn-block{width:100%}
.btn-lg{padding:16px 28px;font-size:1.05rem}

/* Topbar */
.topbar{background:var(--bg-dark);color:#cdd6e3;font-size:.85rem;padding:8px 0}
.topbar-inner{display:flex;gap:20px;align-items:center;flex-wrap:wrap}
.topbar-right{margin-left:auto}

/* Header */
.site-header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50}
.header-inner{display:flex;align-items:center;gap:24px;padding:14px 20px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.35rem;color:var(--text)}
.logo:hover{text-decoration:none}
.logo-img{height:48px;width:auto;display:block}
.logo-img-footer{height:54px;filter:brightness(0) invert(1) opacity(.95)}
.logo-mark{width:36px;height:36px;border-radius:8px;background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff;display:grid;place-items:center;font-weight:800}
.main-nav{margin-left:auto}
.main-nav ul{display:flex;gap:24px;list-style:none;padding:0;margin:0}
.main-nav a{color:var(--text);font-weight:500}
.header-cta{padding:10px 18px}
.hamburger{display:none;background:none;border:0;font-size:1.5rem;cursor:pointer}

/* Hero */
.hero{background:linear-gradient(135deg,#0b1f3a 0%,#0a66c2 100%);color:#fff;padding:70px 0}
.hero-inner{display:grid;grid-template-columns:1.3fr 1fr;gap:40px;align-items:center}
.hero h1{color:#fff;font-size:2.8rem}
.eyebrow{color:#ffcc80;font-weight:600;letter-spacing:.06em;text-transform:uppercase;font-size:.85rem;margin-bottom:10px}
.lead{color:#cfd8e6;font-size:1.1rem}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0 28px}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;list-style:none;padding:0;margin:0;border-top:1px solid rgba(255,255,255,.15);padding-top:20px}
.hero-stats strong{display:block;font-size:1.5rem;color:#fff}
.hero-stats span{color:#a9b6c9;font-size:.85rem}
.hero-card{background:#fff;color:var(--text);padding:28px;border-radius:14px;box-shadow:var(--shadow)}
.hero-card h3{margin-bottom:16px}
.hero-card form{display:grid;gap:10px}
.hero-card input,.hero-card select,.contact-form input,.contact-form textarea{padding:12px 14px;border:1px solid var(--border);border-radius:8px;font-size:.95rem;font-family:inherit;width:100%}
.hero-card input:focus,.hero-card select:focus{outline:2px solid var(--brand);outline-offset:1px}

/* Logos strip */
.logos-strip{background:var(--bg-alt);padding:30px 0;border-bottom:1px solid var(--border)}
.logos-strip p{text-align:center;color:var(--muted);margin-bottom:14px;font-size:.9rem;font-weight:500}
.logo-row{display:flex;justify-content:space-around;flex-wrap:wrap;gap:24px;color:#7a869a;font-weight:700;font-size:1.05rem;opacity:.7}

/* Sections */
.section{padding:80px 0}
.section-alt{background:var(--bg-alt)}
.section-dark{background:var(--bg-dark);color:#dde6f1}
.section-dark h2,.section-dark h3,.section-dark h4{color:#fff}
.section-dark p{color:#aabbd1}
.section-head{text-align:center;max-width:720px;margin:0 auto 40px}
.section-head h2{font-size:2.2rem}

/* Grids */
.grid{display:grid;gap:24px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

/* Category card */
.cat-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px;text-align:center;transition:transform .2s, box-shadow .2s;cursor:pointer}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--brand)}
.cat-icon{font-size:2.2rem;margin-bottom:10px}
.cat-card h4{margin-bottom:6px}
.cat-card p{font-size:.88rem;margin:0}

/* Course card */
.course-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column}
.course-thumb{height:160px;background:#dbe6f3}
.course-thumb{background-size:cover;background-position:center}
.thumb-1{background-image:url('../images/data-science.svg')}
.thumb-2{background-image:url('../images/aws.svg')}
.thumb-3{background-image:url('../images/sap.svg')}
.thumb-4{background-image:url('../images/devops.svg')}
.thumb-5{background-image:url('../images/salesforce.svg')}
.thumb-6{background-image:url('../images/cybersecurity.svg')}
.course-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.tag{display:inline-block;background:#fff3e6;color:#c4630a;font-size:.75rem;font-weight:600;padding:4px 10px;border-radius:20px;align-self:flex-start;text-transform:uppercase;letter-spacing:.04em}
.course-meta{display:flex;gap:14px;font-size:.85rem;color:var(--muted);margin-top:auto}
.course-card .btn{align-self:flex-start}

/* Features */
.feature{background:#fff;padding:24px;border-radius:var(--radius);border:1px solid var(--border)}
.feature-icon{font-size:1.8rem;margin-bottom:8px}
.feature h4{margin-bottom:6px}
.feature p{margin:0;font-size:.9rem}

/* Two col */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.check-list{list-style:none;padding:0;margin:0 0 24px}
.check-list li{padding:8px 0 8px 28px;position:relative}
.check-list li::before{content:"✓";position:absolute;left:0;top:8px;color:#5cd6a1;font-weight:700}
.stats-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:30px;display:grid;grid-template-columns:1fr 1fr;gap:24px}
.stats-card strong{display:block;font-size:2rem;color:#fff}
.stats-card span{color:#aabbd1;font-size:.9rem}

/* Testimonials */
.t-card{background:#fff;border-radius:var(--radius);padding:28px;margin:0;box-shadow:var(--shadow);border-top:4px solid var(--brand)}
.t-card p{color:var(--text);font-style:italic;font-size:1.02rem}
.t-card footer{color:var(--muted);font-size:.9rem;font-style:normal}
.t-card footer strong{color:var(--text);display:block}

/* CTA banner */
.cta-banner{background:linear-gradient(135deg,var(--accent),#ff9d3d);color:#fff;padding:60px 0}
.cta-inner{display:flex;justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap}
.cta-inner h2{color:#fff;margin-bottom:6px}
.cta-inner p{color:rgba(255,255,255,.92);margin:0}
.cta-banner .btn-primary{background:#fff;color:var(--accent)}
.cta-banner .btn-primary:hover{background:#0b1f3a;color:#fff}

/* Contact */
.contact-list{list-style:none;padding:0;margin:18px 0 0}
.contact-list li{padding:8px 0;color:var(--text)}
.contact-form{background:#fff;padding:30px;border-radius:var(--radius);box-shadow:var(--shadow);display:grid;gap:12px}
.contact-form .row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.contact-form textarea{font-family:inherit;resize:vertical}

/* Footer */
.site-footer{background:#081627;color:#9fb0c8;padding:60px 0 0;margin-top:0}
.site-footer h5{color:#fff;margin-bottom:14px;font-size:1rem}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer ul li{padding:5px 0}
.site-footer a{color:#9fb0c8}
.site-footer a:hover{color:#fff}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px}
.logo-light{color:#fff}
.footer-grid form{display:flex;gap:8px;margin-top:10px}
.footer-grid form input{flex:1;padding:10px 12px;border-radius:8px;border:1px solid #1c3151;background:#0c1d33;color:#fff}
.footer-bottom{border-top:1px solid #122843;padding:18px 0;font-size:.85rem}
.footer-bottom .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* Responsive */
@media (max-width: 960px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .hero-inner{grid-template-columns:1fr}
  .two-col{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  h1{font-size:2rem}
  h2{font-size:1.6rem}
}
@media (max-width: 640px){
  .main-nav,.header-cta{display:none}
  .hamburger{display:block;margin-left:auto}
  .grid-4,.grid-3{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .stats-card{grid-template-columns:1fr 1fr}
  .contact-form .row{grid-template-columns:1fr}
  .section{padding:60px 0}
  .hero{padding:50px 0}
}