body {
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
    color: #ffffff;
}
header {
    text-align: center;
    padding: 2rem 1rem;
    background: rgba(0, 0, 0, 0.5);
}
header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: #ffffff;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.7);
}
header p {
    font-size: 1.2rem;
    color: #dddddd;
}
.container {
    padding: 2rem 1rem;
    max-width: 1200px;
    margin: 0 auto;
}
.article-section {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    margin-bottom: 2rem;
}
.article-section h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #ffffff;
}
.article-section h3 {
    font-size: 1.5rem;
    margin-top: 1.5rem;
    color: #a1c4fd;
}
.article-section p {
    font-size: 1rem;
    line-height: 1.6;
    color: #ffffff;
}
.article-section pre {
    background: rgba(0, 0, 0, 0.6);
    padding: 1rem;
    border-radius: 5px;
    overflow-x: auto;
}
.article-section code {
    color: #f39c12;
    font-family: 'Courier New', Courier, monospace;
}
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}
.card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 1rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.3);
    transition: transform 0.3s, box-shadow 0.3s;
}
.card:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 12px rgba(0,0,0,0.5);
}
.card img {
    width: 100%;
    border-radius: 5px;
    margin-bottom: 1rem;
}
.card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: #a1c4fd;
}
.card p {
    font-size: 0.95rem;
    margin-bottom: 1rem;
    color: #ffffff;
}
.card a {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: #ff6f61;
    color: #ffffff;
    text-decoration: none;
    border-radius: 5px;
    transition: background 0.3s;
}
.card a:hover {
    background: #ff3b2e;
}
.footer {
    text-align: center;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.5);
    color: #dddddd;
    font-size: 0.9rem;
}
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }
    .article-section {
        padding: 1.5rem;
    }
}
@media (max-width: 480px) {
    header h1 {
        font-size: 1.5rem;
    }
    .card {
        padding: 0.8rem;
    }
    .card h3 {
        font-size: 1rem;
    }
}
@media (min-width: 1440px) {
    header h1 {
        font-size: 3rem;
    }
    .article-section h2 {
        font-size: 2.5rem;
    }
    .card h3 {
        font-size: 1.5rem;
    }
}