body {
    margin: 0;
    font-family: 'Helvetica', 'Roboto', sans-serif;
    background: linear-gradient(135deg, #0074D9, #6F86D6);
    color: #fff;
    overflow-x: hidden;
}
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
header h1 {
    font-size: 24px;
    color: #fff;
    margin: 0;
    font-weight: bold;
}
header nav a {
    color: #fff;
    text-decoration: none;
    margin-left: 20px;
    font-size: 16px;
    transition: color 0.3s ease;
}
header nav a:hover {
    color: #FFC107;
}
.hero {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background: radial-gradient(circle, rgb(33, 150, 243), transparent),
                url('https://images.gptkong.com/demo/sample1.png') no-repeat center/cover;
    animation: aurora-move 15s linear infinite;
}
@keyframes aurora-move {
    0% { background-position: 0 0; }
    100% { background-position: 100% 100%; }
}
.hero h2 {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 20px;
}
.hero p {
    font-size: 20px;
    margin-bottom: 30px;
}
.cta-button {
    background: #FFC107;
    color: #000;
    padding: 15px 30px;
    border-radius: 50px;
    font-size: 18px;
    text-decoration: none;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.cta-button:hover {
    transform: scale(1.1);
    box-shadow: 0 0 20px rgba(255, 193, 7, 0.5);
}
.module-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    padding: 100px 20px 40px;
    max-width: 1440px;
    margin: 0 auto;
}
.module-card {
    background: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}
.module-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}
.module-card img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    margin-bottom: 15px;
    transition: transform 0.3s ease;
}
.module-card:hover img {
    transform: scale(1.1);
}
.module-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #fff;
}
.module-card p {
    font-size: 16px;
    line-height: 1.6;
    color: #e0e0e0;
}
.code-block {
    background: rgba(0, 0, 0, 0.5);
    color: #fff;
    padding: 20px;
    border-radius: 10px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-word;
}
@media (max-width: 768px) {
    .hero h2 {
        font-size: 36px;
    }
    .hero p {
        font-size: 16px;
    }
    .module-container {
        grid-template-columns: 1fr;
    }
}
@media (max-width: 480px) {
    header h1 {
        font-size: 20px;
    }
    header nav a {
        font-size: 14px;
        margin-left: 10px;
    }
}
footer {
    text-align: center;
    padding: 20px;
    background: rgba(0, 0, 0, 0.3);
    color: #fff;
    font-size: 14px;
}