body {
    font-family: 'system-ui', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    scroll-behavior: smooth;
}
.hero-section {
    background: url('banner.webp') no-repeat center center;
    background-size: cover;
    color: white;
    padding: 150px 0;
    text-align: center;
}
.hero-section h1 {
    font-size: 4rem;
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}
.section {
    padding: 60px 0;
}
.product-card, .review-card, .tech-card {
    border: none;
    transition: transform .2s;
    height: 100%;
}
.product-card:hover, .review-card:hover, .tech-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}
.popular-product-img {
    max-width: 100%;
    border-radius: .5rem;
}
.footer {
    background-color: #343a40;
    color: white;
    padding: 40px 0;
}
.navbar-brand {
    font-weight: bold;
}