* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f8f9fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2563eb;
    text-decoration: none;
}

.nav a {
    margin-left: 2rem;
    color: #64748b;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.nav a:hover {
    color: #2563eb;
}

/* Hero */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero p {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* Main Content */
.main {
    min-height: 60vh;
    padding: 3rem 0;
}

/* Article Cards */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.article-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.15);
}

.article-image {
    height: 200px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
}

.article-content {
    padding: 1.5rem;
}

.article-content h2 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: #1e293b;
}

.article-content p {
    color: #64748b;
    margin-bottom: 1rem;
}

.read-more {
    color: #2563eb;
    text-decoration: none;
    font-weight: 600;
}

/* Article Page */
.article-header {
    background: white;
    padding: 3rem 0;
    margin-bottom: 2rem;
    border-bottom: 1px solid #e2e8f0;
}

.article-header h1 {
    font-size: 2.5rem;
    color: #1e293b;
    margin-bottom: 1rem;
}

.article-meta {
    color: #64748b;
    font-size: 0.875rem;
}

.article-body {
    background: white;
    padding: 3rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    max-width: 800px;
    margin: 0 auto;
}

.article-body h2 {
    font-size: 1.75rem;
    color: #1e293b;
    margin: 2rem 0 1rem;
}

.article-body h3 {
    font-size: 1.25rem;
    color: #334155;
    margin: 1.5rem 0 0.75rem;
}

.article-body p {
    margin-bottom: 1rem;
    color: #475569;
}

.product-card {
    background: #f8fafc;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    padding: 1.5rem;
    margin: 1.5rem 0;
}

.product-card h4 {
    color: #2563eb;
    margin-bottom: 0.5rem;
}

.product-card .price {
    font-size: 1.5rem;
    font-weight: 700;
    color: #059669;
    margin: 0.5rem 0;
}

.product-card .rating {
    color: #f59e0b;
    margin-bottom: 1rem;
}

.btn-primary {
    display: inline-block;
    background: #2563eb;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: background 0.2s;
}

.btn-primary:hover {
    background: #1d4ed8;
}

/* Footer */
.footer {
    background: #1e293b;
    color: #94a3b8;
    padding: 2rem 0;
    text-align: center;
    margin-top: 4rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .nav {
        display: none;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
    }
    
    .article-body {
        padding: 1.5rem;
    }
}