body {
    font-family: 'Fira Sans', sans-serif;
    color: #ffffff;
    background: linear-gradient(135deg, #0d1137, #1a2980);
    margin: 0;
    padding: 0;
    line-height: 1.6;
}
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(13, 17, 55, 0.9);
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 30px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}
header h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 24px;
    color: #6c5ce7;
    margin: 0;
}
nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 20px;
}
nav ul li a {
    text-decoration: none;
    color: #b3b3b3;
    transition: color 0.3s ease;
}
nav ul li a:hover {
    color: #6c5ce7;
}
main {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    padding-top: 80px;
}
.content-wrapper {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    padding: 20px;
}
.sidebar {
    width: 100%;
    max-width: 300px;
    background: linear-gradient(135deg, #1a2980, #0d1137);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    margin-bottom: 20px;
}
.sidebar h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: 20px;
    color: #6c5ce7;
    margin-bottom: 15px;
}
.sidebar p {
    font-size: 14px;
    color: #dfe6e9;
}
.article-section {
    width: 100%;
    max-width: 800px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    margin-bottom: 20px;
}
.article-section h2, .article-section h3, .article-section h4 {
    font-family: 'Orbitron', sans-serif;
    color: #6c5ce7;
}
.article-section pre {
    background: #1a2980;
    color: #dfe6e9;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}
.parallax {
    height: 400px;
    background: url('https://images.gptkong.com/demo/sample1.png') center/cover no-repeat fixed;
    position: relative;
    margin: 20px 0;
}
.parallax::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(13, 17, 55, 0.5);
}
.footer {
    background: linear-gradient(135deg, #0d1137, #1a2980);
    padding: 20px;
    text-align: center;
    color: #b3b3b3;
    font-size: 12px;
}
.footer a {
    color: #6c5ce7;
    text-decoration: none;
}
@media (max-width: 768px) {
    .content-wrapper {
        flex-direction: column;
        align-items: center;
    }
    .sidebar {
        max-width: 100%;
    }
}