/* CSS Variables for Color Scheme */
    :root {
        --primary-color: #0A2463; /* 深蓝色 */
        --secondary-color: #FFFFFF; /* 白色 */
        --accent-color: #C5D8FF; /* 渐变紫蓝色 */
        --highlight-color: #FFD700; /* 金色 */
        --background-gradient: radial-gradient(circle at top left, #0A2463, #1B2C3A);
        --font-primary: 'Inter', sans-serif;
        --font-secondary: 'Poppins', sans-serif;
    }

    /* Reset and Base Styles */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: var(--font-primary);
        line-height: 1.6;
        color: var(--secondary-color);
        background: var(--background-gradient);
        overflow-x: hidden;
    }

    /* Navigation Bar */
    .navbar {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        background-color: rgba(10, 36, 99, 0.9);
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 20px 50px;
        z-index: 1000;
        transition: all 0.3s ease;
    }

    .navbar a {
        color: var(--secondary-color);
        text-decoration: none;
        margin: 0 15px;
        font-family: var(--font-secondary);
        font-weight: bold;
    }

    .navbar a:hover {
        color: var(--highlight-color);
    }

    /* Hero Section */
    .hero {
        height: 100vh;
        display: flex;
        justify-content: center;
        align-items: center;
        background: linear-gradient(135deg, #0A2463, #1B2C3A);
        position: relative;
        overflow: hidden;
    }

    .hero::before {
        content: "";
        position: absolute;
        width: 200%;
        height: 200%;
        background: radial-gradient(circle, rgb(255, 87, 34), transparent);
        animation: aurora-move 15s linear infinite;
        top: -50%;
        left: -50%;
        z-index: 1;
    }

    .hero-content {
        position: relative;
        z-index: 2;
        text-align: center;
    }

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

    .hero p {
        font-size: 1.2rem;
        color: var(--secondary-color);
        margin-bottom: 30px;
    }

    .cta-button {
        padding: 15px 30px;
        background-color: var(--highlight-color);
        color: var(--primary-color);
        border: none;
        border-radius: 25px;
        font-size: 1rem;
        cursor: pointer;
        transition: background-color 0.3s ease;
        text-decoration: none;
        font-family: var(--font-secondary);
    }

    .cta-button:hover {
        background-color: #e0c200;
    }

    @keyframes aurora-move {
        0% { transform: rotate(0deg); }
        100% { transform: rotate(360deg); }
    }

    /* Sections */
    section {
        padding: 100px 50px;
        max-width: 1200px;
        margin: 0 auto;
    }

    .section-title {
        font-family: var(--font-secondary);
        font-size: 2.5rem;
        color: var(--highlight-color);
        margin-bottom: 20px;
        text-align: center;
    }

    .section-content {
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
    }

    .module {
        flex: 1 1 45%;
        background-color: rgba(255, 255, 255, 0.1);
        padding: 20px;
        border-radius: 15px;
        backdrop-filter: blur(10px);
        position: relative;
        overflow: hidden;
    }

    .module h3 {
        font-family: var(--font-secondary);
        color: var(--highlight-color);
        margin-bottom: 10px;
    }

    .module p {
        color: var(--secondary-color);
        line-height: 1.8;
    }

    .module img {
        width: 100%;
        border-radius: 10px;
        margin-top: 15px;
    }

    /* 示例展示 */
    .example-display {
        background-color: rgba(255, 255, 255, 0.05);
        padding: 30px;
        border-radius: 15px;
        margin-top: 50px;
    }

    .example-display h2 {
        font-family: var(--font-secondary);
        color: var(--highlight-color);
        margin-bottom: 20px;
        text-align: center;
    }

    .example-display article {
        color: var(--secondary-color);
    }

    .example-display pre {
        background-color: rgba(0, 0, 0, 0.7);
        padding: 15px;
        border-radius: 10px;
        overflow-x: auto;
        font-family: 'Courier New', Courier, monospace;
        margin: 10px 0;
    }

    .example-display code {
        color: #FFD700;
    }

    /* Footer */
    footer {
        background-color: rgba(10, 36, 99, 0.9);
        color: var(--secondary-color);
        text-align: center;
        padding: 20px 50px;
        font-size: 0.9rem;
    }

    footer a {
        color: var(--highlight-color);
        text-decoration: none;
        margin: 0 10px;
    }

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

    /* Responsive Design */
    @media (max-width: 1440px) {
        .hero h1 {
            font-size: 2.5rem;
        }
        .section-content {
            flex-direction: column;
        }
        .module {
            flex: 1 1 100%;
        }
    }

    @media (max-width: 1200px) {
        .navbar {
            padding: 15px 30px;
        }
        section {
            padding: 80px 30px;
        }
    }

    @media (max-width: 1024px) {
        .hero h1 {
            font-size: 2rem;
        }
        .cta-button {
            padding: 12px 25px;
            font-size: 0.9rem;
        }
    }

    @media (max-width: 768px) {
        .navbar {
            flex-direction: column;
            align-items: center;
        }
        .section-content {
            flex-direction: column;
        }
        .module {
            flex: 1 1 100%;
        }
        .hero {
            padding: 50px 20px;
        }
    }

    @media (max-width: 480px) {
        .hero h1 {
            font-size: 1.5rem;
        }
        .section-title {
            font-size: 2rem;
        }
        .module h3 {
            font-size: 1.5rem;
        }
    }

    @media (max-width: 320px) {
        .navbar {
            padding: 10px 20px;
        }
        .hero h1 {
            font-size: 1.2rem;
        }
        .cta-button {
            padding: 10px 20px;
            font-size: 0.8rem;
        }
    }