/* 全局样式 */
    @import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@700&family=Roboto&display=swap');

    :root {
        --primary-color: #002f4b; /* 深蓝色 */
        --secondary-color: #f8e71c; /* 金色 */
        --accent-color: #00ffcc; /* 青色 */
        --background-gradient: radial-gradient(circle, #002f4b, #00ffcc, transparent);
        --text-color: #333333; /* 深灰色 */
        --background-color: #ffffff; /* 白色 */
        --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        --transition-speed: 0.3s;
    }

    body {
        margin: 0;
        font-family: 'Roboto', sans-serif;
        color: var(--text-color);
        background: var(--background-gradient);
        animation: aurora-move 15s linear infinite;
    }

    header {
        background-color: var(--primary-color);
        color: #ffffff;
        padding: 20px;
        text-align: center;
        position: fixed;
        width: 100%;
        top: 0;
        z-index: 1000;
        box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    }

    header h1 {
        margin: 0;
        font-family: 'Montserrat', sans-serif;
        font-size: 1.8rem;
    }

    nav {
        margin-top: 10px;
    }

    nav a {
        color: #ffffff;
        margin: 0 15px;
        text-decoration: none;
        font-weight: bold;
        transition: color var(--transition-speed);
    }

    nav a:hover {
        color: var(--secondary-color);
    }

    .container {
        padding: 100px 20px 20px 20px;
        max-width: 1200px;
        margin: 0 auto;
    }

    .hero-section {
        height: 100vh;
        background: linear-gradient(135deg, #002f4b, #00ffcc);
        display: flex;
        justify-content: center;
        align-items: center;
        text-align: center;
        color: #ffffff;
        position: relative;
        overflow: hidden;
    }

    .hero-section h2 {
        font-family: 'Montserrat', sans-serif;
        font-size: 3rem;
        animation: fadeIn 2s ease-in-out;
    }

    @keyframes fadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
    }

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

    .section {
        margin: 50px 0;
        background-color: rgba(255, 255, 255, 0.8);
        padding: 30px;
        border-radius: 10px;
        box-shadow: var(--card-shadow);
    }

    .section h2 {
        font-family: 'Montserrat', sans-serif;
        color: var(--primary-color);
        margin-bottom: 20px;
    }

    .section p, .section ul, .section pre {
        font-size: 1rem;
        line-height: 1.6;
    }

    .section ul {
        list-style-type: disc;
        margin-left: 20px;
    }

    .section pre {
        background-color: #f4f4f4;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
    }

    .button {
        background-color: var(--secondary-color);
        color: #ffffff;
        padding: 10px 20px;
        border: none;
        border-radius: 5px;
        cursor: pointer;
        transition: transform var(--transition-speed), box-shadow var(--transition-speed);
        font-size: 1rem;
    }

    .button:hover {
        transform: scale(1.05);
        box-shadow: 0 6px 12px rgba(0,0,0,0.2);
    }

    .image-gallery {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 15px;
        margin-top: 20px;
    }

    .image-gallery img {
        width: 100%;
        height: auto;
        border-radius: 5px;
    }

    footer {
        background-color: var(--primary-color);
        color: #ffffff;
        text-align: center;
        padding: 20px;
        margin-top: 50px;
    }

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

    @media (max-width: 768px) {
        header h1 {
            font-size: 1.5rem;
        }

        nav a {
            margin: 0 10px;
            font-size: 0.9rem;
        }

        .hero-section h2 {
            font-size: 2rem;
        }
    }

    @media (max-width: 480px) {
        header, footer {
            padding: 15px;
        }

        nav a {
            display: block;
            margin: 10px 0;
        }

        .container {
            padding: 120px 10px 10px 10px;
        }
    }