/* 基础样式重置 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #0A1F44, #8E44AD);
        color: #FFFFFF;
        line-height: 1.6;
        overflow-x: hidden;
    }

    header {
        background: rgba(10, 31, 68, 0.8);
        padding: 20px 40px;
        position: fixed;
        width: 100%;
        top: 0;
        z-index: 1000;
        display: flex;
        justify-content: space-between;
        align-items: center;
        backdrop-filter: blur(10px);
    }

    header .logo {
        font-family: 'Montserrat', sans-serif;
        font-size: 24px;
        color: #2ECC71;
    }

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

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

    nav ul li a {
        text-decoration: none;
        color: #BDC3C7;
        font-size: 16px;
        transition: color 0.3s ease;
    }

    nav ul li a:hover {
        color: #2ECC71;
    }

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

    .hero::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: radial-gradient(circle, rgba(10,31,68,0.8), transparent);
        animation: aurora-move 15s linear infinite;
    }

    .hero-content {
        position: relative;
        z-index: 1;
        color: #FFFFFF;
    }

    .hero h1 {
        font-family: 'Montserrat', sans-serif;
        font-size: 48px;
        margin-bottom: 20px;
    }

    .hero p {
        font-size: 18px;
        max-width: 600px;
        margin: 0 auto 30px;
    }

    .cta-button {
        padding: 15px 30px;
        background: #2ECC71;
        color: #FFFFFF;
        border: none;
        border-radius: 25px;
        font-size: 16px;
        cursor: pointer;
        transition: background 0.3s ease, transform 0.3s ease;
    }

    .cta-button:hover {
        background: #27AE60;
        transform: scale(1.05);
    }

    main {
        padding: 100px 40px 40px;
        background: rgba(10, 31, 68, 0.9);
    }

    .section {
        margin-bottom: 60px;
    }

    .section h2 {
        font-family: 'Montserrat', sans-serif;
        font-size: 32px;
        color: #2ECC71;
        margin-bottom: 20px;
        text-align: center;
    }

    .grid-system {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
    }

    .card {
        background: rgba(255, 255, 255, 0.1);
        padding: 20px;
        border-radius: 15px;
        backdrop-filter: blur(10px);
        transition: transform 0.3s ease, background 0.3s ease;
    }

    .card:hover {
        transform: translateY(-10px);
        background: rgba(46, 204, 113, 0.2);
    }

    .card h3 {
        font-family: 'Montserrat', sans-serif;
        font-size: 24px;
        margin-bottom: 10px;
    }

    .card p {
        font-size: 16px;
    }

    .sample-data, .sample-article {
        background: rgba(255, 255, 255, 0.05);
        padding: 20px;
        border-radius: 15px;
        backdrop-filter: blur(5px);
    }

    pre {
        background: rgba(0, 0, 0, 0.7);
        padding: 15px;
        border-radius: 10px;
        overflow-x: auto;
        font-family: 'Courier New', Courier, monospace;
        margin-top: 10px;
        color: #2ECC71;
    }

    .images-grid {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        justify-content: center;
    }

    .images-grid img {
        width: 100px;
        height: 100px;
        object-fit: cover;
        border-radius: 10px;
    }

    footer {
        background: rgba(10, 31, 68, 0.8);
        padding: 20px 40px;
        text-align: center;
        color: #BDC3C7;
        position: relative;
    }

    @keyframes aurora-move {
        0% {
            transform: translate(0, 0);
        }
        50% {
            transform: translate(50px, 50px);
        }
        100% {
            transform: translate(0, 0);
        }
    }

    @media (max-width: 768px) {
        header {
            flex-direction: column;
            align-items: flex-start;
        }

        nav ul {
            flex-direction: column;
            width: 100%;
        }

        nav ul li {
            margin: 10px 0;
        }

        .hero h1 {
            font-size: 32px;
        }

        .hero p {
            font-size: 16px;
            padding: 0 20px;
        }

        .grid-system {
            grid-template-columns: 1fr;
        }
    }

    @media (max-width: 480px) {
        .hero h1 {
            font-size: 24px;
        }

        .cta-button {
            padding: 10px 20px;
            font-size: 14px;
        }

        .card h3 {
            font-size: 20px;
        }

        .card p {
            font-size: 14px;
        }
    }

    @media (min-width: 1440px) {
        .images-grid img {
            width: 150px;
            height: 150px;
        }

        .hero h1 {
            font-size: 60px;
        }

        .section h2 {
            font-size: 36px;
        }
    }