/* CSS Variables for Color Scheme */
    :root {
        --primary-color: #0A2463;
        --secondary-color: #BDCDD6;
        --highlight-color: #FFD700;
        --growth-color-start: #00FF7F;
        --growth-color-end: #009E60;
        --background-gradient: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
        --font-primary: 'Roboto', sans-serif;
        --font-secondary: 'Montserrat', sans-serif;
        --transition-speed: 0.3s;
    }

    /* Importing Google Fonts */
    @import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@700&family=Poppins:wght@600&family=Roboto&display=swap');

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

    body {
        font-family: var(--font-primary);
        background: var(--background-gradient);
        color: white;
        line-height: 1.6;
        min-height: 100vh;
        display: flex;
        flex-direction: column;
    }

    a {
        color: var(--highlight-color);
        text-decoration: none;
        transition: background-color var(--transition-speed) ease;
    }

    a:hover {
        background-color: rgba(255, 215, 0, 0.2);
    }

    /* Navigation Bar */
    nav {
        position: fixed;
        top: 0;
        width: 100%;
        background: rgba(10, 36, 99, 0.9);
        backdrop-filter: blur(10px);
        padding: 15px 30px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        z-index: 1000;
    }

    nav .logo {
        font-family: var(--font-secondary);
        font-size: 1.5rem;
        color: var(--highlight-color);
    }

    nav ul {
        list-style: none;
        display: flex;
    }

    nav ul li {
        margin-left: 20px;
    }

    nav ul li a {
        padding: 8px 12px;
        border-radius: 4px;
    }

    /* Header Section */
    header {
        height: 100vh;
        background: url('https://images.gptkong.com/demo/sample1.png') center/cover no-repeat;
        display: flex;
        justify-content: center;
        align-items: center;
        text-align: center;
        padding: 0 20px;
    }

    header h1 {
        font-family: var(--font-secondary);
        font-size: 3rem;
        color: var(--highlight-color);
        margin-bottom: 20px;
    }

    header p {
        font-size: 1.2rem;
        max-width: 800px;
        margin: 0 auto 30px;
    }

    header .cta-button {
        background: var(--highlight-color);
        color: var(--primary-color);
        padding: 15px 30px;
        border: none;
        border-radius: 50px;
        font-size: 1rem;
        cursor: pointer;
        transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    }

    header .cta-button:hover {
        transform: scale(1.05);
        box-shadow: 0 4px 15px rgba(255, 215, 0, 0.4);
    }

    /* Main Content */
    main {
        flex: 1;
        padding: 100px 20px 50px;
        max-width: 1200px;
        margin: 0 auto;
    }

    /* Article Section */
    article {
        background: rgba(10, 36, 99, 0.8);
        padding: 30px;
        border-radius: 10px;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    }

    article h2 {
        font-family: var(--font-secondary);
        font-size: 2rem;
        margin-bottom: 15px;
        color: var(--highlight-color);
    }

    article h3 {
        font-family: var(--font-secondary);
        font-size: 1.5rem;
        margin-top: 20px;
        margin-bottom: 10px;
        color: var(--growth-color-start);
    }

    article p {
        margin-bottom: 15px;
        font-size: 1rem;
    }

    /* Code Blocks */
    pre {
        background: #1e1e1e;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        font-family: 'Courier New', Courier, monospace;
        margin-bottom: 20px;
    }

    code {
        color: #dcdcdc;
        font-size: 0.95rem;
    }

    /* Table Styles */
    table {
        width: 100%;
        border-collapse: collapse;
        margin-top: 20px;
    }

    table th, table td {
        border: 1px solid #444;
        padding: 10px;
        text-align: left;
    }

    table th {
        background: var(--growth-color-start);
        color: #000;
    }

    /* Image Gallery */
    .image-gallery {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 15px;
        margin-top: 30px;
    }

    .image-gallery img {
        width: 100%;
        border-radius: 8px;
        transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    }

    .image-gallery img:hover {
        transform: scale(1.05);
        box-shadow: 0 4px 15px rgba(255, 215, 0, 0.4);
    }

    /* Footer */
    footer {
        background: rgba(10, 36, 99, 0.9);
        color: var(--secondary-color);
        text-align: center;
        padding: 20px;
        font-size: 0.9rem;
    }

    /* Annotation */
    .annotation {
        text-align: center;
        margin-top: 20px;
        font-size: 1rem;
        color: var(--highlight-color);
    }

    /* Responsive Design */
    @media (max-width: 1440px) {
        header h1 {
            font-size: 2.5rem;
        }

        header p {
            font-size: 1.1rem;
        }
    }

    @media (max-width: 1200px) {
        nav {
            padding: 10px 20px;
        }

        header h1 {
            font-size: 2.2rem;
        }

        header .cta-button {
            padding: 12px 25px;
            font-size: 0.9rem;
        }
    }

    @media (max-width: 1024px) {
        main {
            padding: 80px 15px 40px;
        }

        article {
            padding: 25px;
        }
    }

    @media (max-width: 768px) {
        nav ul {
            display: none;
        }

        nav .menu-icon {
            display: block;
            cursor: pointer;
        }

        header h1 {
            font-size: 2rem;
        }

        header p {
            font-size: 1rem;
        }
    }

    @media (max-width: 480px) {
        header h1 {
            font-size: 1.8rem;
        }

        header p {
            font-size: 0.95rem;
        }

        .image-gallery {
            grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
        }
    }

    @media (max-width: 320px) {
        header h1 {
            font-size: 1.5rem;
        }

        header p {
            font-size: 0.9rem;
        }
    }

    /* Animations */
    @keyframes aurora-move {
        0% { background-position: 0% 50%; }
        50% { background-position: 100% 50%; }
        100% { background-position: 0% 50%; }
    }

    .animated-background {
        background: radial-gradient(circle, rgb(255, 87, 34), transparent);
        animation: aurora-move 15s linear infinite;
    }