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

    body {
        font-family: 'Open Sans', sans-serif;
        line-height: 1.6;
        color: #0047AB;
        background: linear-gradient(135deg, #1E3C72, #2A5298);
        background-size: cover;
        background-attachment: fixed;
    }

    a {
        color: #39FF14;
        text-decoration: none;
        transition: color 0.3s ease;
    }

    a:hover {
        color: #FFD700;
    }

    /* 容器 */
    .container {
        width: 90%;
        max-width: 1200px;
        margin: 0 auto;
        padding: 20px;
    }

    /* 头部导航 */
    .navbar {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 15px 0;
        background: rgba(0, 0, 0, 0.5);
        border-radius: 10px;
        position: fixed;
        width: 90%;
        top: 20px;
        left: 50%;
        transform: translateX(-50%);
        z-index: 1000;
    }

    .navbar .logo {
        font-family: 'Roboto', sans-serif;
        font-size: 1.5em;
        color: #FFFFFF;
    }

    .nav-links {
        display: flex;
        gap: 20px;
    }

    .nav-links a {
        color: #FFFFFF;
        font-weight: bold;
    }

    .cta-button {
        background-color: #39FF14;
        color: #FFFFFF;
        padding: 10px 20px;
        border-radius: 5px;
        transition: background-color 0.3s ease;
    }

    .cta-button:hover {
        background-color: #FFD700;
    }

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

    .hero::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(30, 60, 114, 0.7);
        z-index: 1;
    }

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

    .hero h1 {
        font-family: 'Roboto', sans-serif;
        font-size: 3em;
        margin-bottom: 20px;
        animation: fadeInDown 2s ease forwards;
    }

    .hero p {
        font-size: 1.2em;
        margin-bottom: 30px;
        animation: fadeInUp 2s ease forwards;
    }

    .hero .cta-button {
        background-color: #39FF14;
        color: #FFFFFF;
        padding: 15px 30px;
        font-size: 1em;
    }

    /* 内容区 */
    .content {
        padding: 100px 0 50px 0;
        background: rgba(255, 255, 255, 0.1);
    }

    .content h2 {
        font-family: 'Roboto', sans-serif;
        font-size: 2em;
        text-align: center;
        color: #FFD700;
        margin-bottom: 40px;
    }

    .content .article {
        background: rgba(255, 255, 255, 0.2);
        padding: 20px;
        border-radius: 10px;
        box-shadow: 0 8px 16px rgba(0,0,0,0.3);
        margin-bottom: 50px;
    }

    .content .article h2, .content .article h3 {
        color: #FFFFFF;
    }

    .content .article p {
        color: #F0F8FF;
        margin-bottom: 15px;
    }

    .content .article pre {
        background: #2A5298;
        padding: 15px;
        border-radius: 5px;
        overflow: auto;
    }

    .content .article code {
        color: #39FF14;
        font-family: 'Courier New', Courier, monospace;
    }

    /* 示例数据区 */
    .features {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
        padding: 20px;
    }

    .feature-item {
        background: rgba(0, 0, 0, 0.5);
        padding: 20px;
        border-radius: 10px;
        text-align: center;
        color: #FFFFFF;
        transition: transform 0.3s ease, background 0.3s ease;
    }

    .feature-item:hover {
        transform: scale(1.05);
        background: rgba(0, 0, 0, 0.7);
    }

    .feature-item img {
        width: 100px;
        height: 100px;
        object-fit: cover;
        margin-bottom: 15px;
        border-radius: 50%;
    }

    .feature-item h3 {
        margin-bottom: 10px;
        font-size: 1.5em;
    }

    .feature-item p {
        font-size: 1em;
    }

    /* 示例展示 */
    .example-display {
        background: rgba(255, 255, 255, 0.1);
        padding: 40px;
        border-radius: 10px;
        margin-bottom: 50px;
    }

    .example-display h2 {
        color: #FFD700;
        margin-bottom: 20px;
    }

    /* 底部提示 */
    .footer-notice {
        text-align: center;
        color: #FFFFFF;
        margin-top: 50px;
        font-size: 1.2em;
    }

    /* 动画 */
    @keyframes fadeInDown {
        from { opacity: 0; transform: translateY(-50px); }
        to { opacity: 1; transform: translateY(0); }
    }

    @keyframes fadeInUp {
        from { opacity: 0; transform: translateY(50px); }
        to { opacity: 1; transform: translateY(0); }
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        .hero h1 {
            font-size: 2.5em;
        }

        .hero p {
            font-size: 1em;
        }
    }

    @media (max-width: 1200px) {
        .navbar {
            padding: 10px;
        }

        .hero h1 {
            font-size: 2em;
        }

        .hero p {
            font-size: 0.9em;
        }
    }

    @media (max-width: 1024px) {
        .features {
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        }
    }

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

        .navbar .menu-toggle {
            display: block;
            cursor: pointer;
            color: #FFFFFF;
            font-size: 1.5em;
        }

        .features {
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        }

        .hero h1 {
            font-size: 1.8em;
        }

        .hero p {
            font-size: 0.8em;
        }
    }

    @media (max-width: 480px) {
        .feature-item img {
            width: 80px;
            height: 80px;
        }

        .hero h1 {
            font-size: 1.5em;
        }

        .hero p {
            font-size: 0.7em;
        }
    }

    @media (max-width: 320px) {
        .hero h1 {
            font-size: 1.2em;
        }

        .hero p {
            font-size: 0.6em;
        }

        .feature-item h3 {
            font-size: 1.2em;
        }

        .feature-item p {
            font-size: 0.8em;
        }
    }