@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@700&family=Roboto:wght@400&display=swap');

    body {
        margin: 0;
        padding: 0;
        font-family: 'Roboto', sans-serif;
        line-height: 1.6;
        letter-spacing: 0.5px;
        background: linear-gradient(135deg, #0074D9, #6a11cb, #ff5c8d);
        animation: bgChange 15s linear infinite;
        color: #ffffff;
    }

    header {
        position: fixed;
        top: 0;
        width: 100%;
        background: rgba(0, 0, 0, 0.5);
        padding: 20px 0;
        z-index: 1000;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    }

    header nav {
        display: flex;
        justify-content: center;
        align-items: center;
    }

    header nav a {
        color: #ffffff;
        text-decoration: none;
        margin: 0 15px;
        font-family: 'Poppins', sans-serif;
        font-weight: 700;
        transition: color 0.3s ease;
    }

    header nav a:hover {
        color: #ff9671;
    }

    .hero {
        height: 100vh;
        display: flex;
        justify-content: center;
        align-items: center;
        background: url('https://images.gptkong.com/demo/sample1.png') center/cover no-repeat;
        position: relative;
        overflow: hidden;
    }

    .hero::after {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: radial-gradient(circle, rgba(0, 0, 0, 0.5), transparent);
    }

    .hero-content {
        position: relative;
        text-align: center;
        z-index: 1;
    }

    .hero-content h1 {
        font-family: 'Poppins', sans-serif;
        font-size: 3rem;
        margin-bottom: 20px;
        background: linear-gradient(90deg, #ff7e5f, #feb47b);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
    }

    .hero-content p {
        font-size: 1.2rem;
        margin-bottom: 30px;
    }

    .hero-content a {
        background: linear-gradient(90deg, #ff7e5f, #feb47b);
        color: #ffffff;
        padding: 15px 30px;
        border: none;
        border-radius: 50px;
        text-decoration: none;
        font-family: 'Poppins', sans-serif;
        font-weight: 700;
        transition: all 0.3s ease;
    }

    .hero-content a:hover {
        background: #ffffff;
        color: #ff7e5f;
        box-shadow: 0 0 20px rgba(255, 126, 95, 0.6);
    }

    .services {
        padding: 100px 20px;
        background: rgba(255, 255, 255, 0.1);
    }

    .services h2 {
        text-align: center;
        font-family: 'Poppins', sans-serif;
        font-size: 2.5rem;
        margin-bottom: 50px;
    }

    .services .container {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 20px;
    }

    .services .card {
        background: rgba(255, 255, 255, 0.2);
        padding: 20px;
        border-radius: 15px;
        backdrop-filter: blur(10px);
        box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .services .card img {
        width: 100px;
        height: 100px;
        margin-bottom: 20px;
    }

    .services .card h3 {
        font-family: 'Poppins', sans-serif;
        font-size: 1.5rem;
        margin-bottom: 10px;
    }

    .services .card p {
        font-size: 1rem;
    }

    .article-section {
        padding: 100px 20px;
        background: linear-gradient(135deg, #6a11cb, #ff5c8d);
    }

    .article-section h2 {
        text-align: center;
        font-family: 'Poppins', sans-serif;
        font-size: 2.5rem;
        margin-bottom: 50px;
    }

    .article-section article {
        max-width: 800px;
        margin: 0 auto;
        background: rgba(255, 255, 255, 0.1);
        padding: 30px;
        border-radius: 15px;
        backdrop-filter: blur(10px);
    }

    .article-section article h2,
    .article-section article h3,
    .article-section article h4 {
        font-family: 'Poppins', sans-serif;
        color: #ffffff;
    }

    .article-section article p {
        color: #f0f0f0;
        margin-bottom: 20px;
    }

    .article-section article pre {
        background: #1e1e1e;
        padding: 15px;
        border-radius: 10px;
        overflow-x: auto;
        margin-bottom: 20px;
    }

    .article-section article code {
        color: #ff9671;
        font-family: 'Roboto', monospace;
    }

    .article-section article table {
        width: 100%;
        border-collapse: collapse;
        margin-bottom: 20px;
    }

    .article-section article table, 
    .article-section article th, 
    .article-section article td {
        border: 1px solid #ffffff;
    }

    .article-section article th, 
    .article-section article td {
        padding: 10px;
        text-align: left;
    }

    .gallery {
        padding: 100px 20px;
        background: rgba(0, 0, 0, 0.5);
    }

    .gallery h2 {
        text-align: center;
        font-family: 'Poppins', sans-serif;
        font-size: 2.5rem;
        margin-bottom: 50px;
        color: #ffffff;
    }

    .gallery .images {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 20px;
    }

    .gallery .images img {
        width: 320px;
        height: 320px;
        object-fit: cover;
        border-radius: 15px;
        transition: transform 0.3s ease;
    }

    .gallery .images img:hover {
        transform: scale(1.05);
    }

    footer {
        padding: 50px 20px;
        background: rgba(0, 0, 0, 0.7);
        text-align: center;
        color: #ffffff;
    }

    footer p {
        margin-bottom: 10px;
    }

    footer a {
        color: #ff9671;
        text-decoration: none;
        margin: 0 10px;
    }

    footer a:hover {
        text-decoration: underline;
    }

    .code-preview {
        background: #2d2d2d;
        padding: 20px;
        border-radius: 10px;
        overflow-x: auto;
        margin-bottom: 20px;
    }

    @keyframes bgChange {
        0% { background-position: 0% 50%; }
        50% { background-position: 100% 50%; }
        100% { background-position: 0% 50%; }
    }

    @media (max-width: 768px) {
        .hero-content h1 {
            font-size: 2rem;
        }

        .services .container {
            grid-template-columns: 1fr;
        }

        .gallery .images img {
            width: 100%;
            height: auto;
        }
    }

    @media (max-width: 480px) {
        header nav a {
            margin: 0 10px;
            font-size: 0.9rem;
        }

        .hero-content p {
            font-size: 1rem;
        }

        .services .card {
            padding: 15px;
        }
    }

    @media (min-width: 1440px) {
        .hero-content h1 {
            font-size: 4rem;
        }

        .services h2, .article-section h2, .gallery h2 {
            font-size: 3rem;
        }
    }