body {
  margin:0;
  font-family: system-ui;
  background:#f5f6f8;
  color:#111;
}

.nav {
  display:flex;
  justify-content:space-between;
  padding:20px 40px;
  background:#1f2a44;
  color:white;
}

.hero {
  height:400px;
  background:url('assets/hero-bg.jpg') center/cover;
  display:flex;
  align-items:center;
  justify-content:center;
}

.hero-overlay {
  text-align:center;
  background:rgba(255,255,255,0.8);
  padding:40px;
  border-radius:20px;
}

.search-box {
  margin-top:20px;
}

.search-box input {
  padding:15px;
  width:300px;
  border-radius:10px;
  border:none;
}

.search-box button {
  padding:15px 25px;
  margin-left:10px;
  background:#2563eb;
  color:white;
  border:none;
  border-radius:10px;
}

.categories {
  display:flex;
  gap:15px;
  justify-content:center;
  margin-top:-30px;
}

.cat {
  padding:15px 30px;
  border-radius:12px;
  color:white;
  font-weight:bold;
}

.excel { background:#1D6F42; }
.word { background:#185ABD; }
.ppt { background:#D24726; }
.office { background:#5E2CA5; }

.content {
  display:flex;
  padding:40px;
  gap:40px;
}

.left { flex:2; }
.right { flex:1; }

.cards {
  display:flex;
  gap:20px;
}

.card {
  height:200px;
  background-size:cover;
  border-radius:15px;
  color:white;
  padding:20px;
  display:flex;
  flex-direction:column;
  justify-content:flex-end;
}

.ai-box {
  background:white;
  padding:20px;
  border-radius:15px;
}

.blog {
  padding:40px;
}

.blog-grid {
  display:grid;
  grid-template-columns: repeat(3,1fr);
  gap:20px;
}

.blog-card {
  height:200px;
  background-size:cover;
  border-radius:15px;
}

footer {
  text-align:center;
  padding:30px;
}