/* 基础样式 */
    body {
        margin: 0;
        padding: 0;
        font-family: 'Roboto', sans-serif;
        background: radial-gradient(circle, #121212, #000000);
        color: #ffffff;
        line-height: 1.6;
    }

    /* 全局链接样式 */
    a {
        color: #00E5FF;
        text-decoration: none;
    }

    a:hover {
        color: #FF4081;
        text-decoration: underline;
    }

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

    /* 顶部导航 */
    .navbar {
        position: fixed;
        top: 0;
        width: 100%;
        background: rgba(0, 0, 0, 0.8);
        padding: 15px 0;
        z-index: 1000;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    }

    .navbar ul {
        list-style: none;
        display: flex;
        justify-content: center;
        margin: 0;
        padding: 0;
    }

    .navbar li {
        margin: 0 15px;
    }

    .navbar a {
        font-size: 16px;
        font-weight: bold;
        color: #ffffff;
        transition: color 0.3s ease;
    }

    .navbar a:hover {
        color: #00E5FF;
    }

    /* 主页横幅 */
    .banner {
        height: 100vh;
        background: linear-gradient(135deg, #1e1e1e, #000000);
        display: flex;
        align-items: center;
        justify-content: center;
        text-align: center;
        position: relative;
        overflow: hidden;
    }

    .banner::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: url('https://images.gptkong.com/demo/sample1.png') no-repeat center center;
        background-size: cover;
        opacity: 0.2;
        animation: aurora-move 30s linear infinite;
    }

    .banner h1 {
        font-size: 48px;
        color: #00E5FF;
        z-index: 1;
    }

    .banner p {
        font-size: 18px;
        color: #ffffff;
        margin-top: 20px;
        z-index: 1;
    }

    /* 动画 */
    @keyframes aurora-move {
        from {
            transform: translateX(0);
        }
        to {
            transform: translateX(-100%);
        }
    }

    /* 内容区域 */
    .content {
        padding: 100px 0 50px;
        background: linear-gradient(180deg, #2c2c2c, #1a1a1a);
    }

    .section {
        margin-bottom: 50px;
    }

    .section h2 {
        font-size: 32px;
        color: #FF4081;
        margin-bottom: 20px;
        text-align: center;
    }

    .section p {
        font-size: 16px;
        color: #cccccc;
        max-width: 800px;
        margin: 0 auto 20px;
    }

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

    .feature-card {
        background: #1e1e1e;
        border-radius: 10px;
        padding: 20px;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
        transition: transform 0.3s ease, background 0.3s ease;
    }

    .feature-card:hover {
        transform: translateY(-10px);
        background: #2a2a2a;
    }

    .feature-card img {
        width: 100%;
        height: auto;
        border-radius: 5px;
        margin-bottom: 15px;
    }

    .feature-card h3 {
        font-size: 20px;
        color: #00E5FF;
        margin-bottom: 10px;
    }

    .feature-card p {
        font-size: 14px;
        color: #cccccc;
    }

    /* 示例展示 */
    .example {
        background: #000000;
        padding: 30px;
        border: 2px dashed #FF4081;
        border-radius: 10px;
        margin: 50px 0;
    }

    .example h2 {
        color: #FF4081;
        text-align: center;
        margin-bottom: 20px;
    }

    .example article {
        max-height: 600px;
        overflow: auto;
    }

    .example pre {
        background: #1e1e1e;
        padding: 15px;
        border-radius: 5px;
        overflow: auto;
    }

    .example code {
        color: #00E5FF;
        font-family: 'Courier New', Courier, monospace;
    }

    /* 底部 */
    .footer {
        background: #121212;
        padding: 20px 0;
        text-align: center;
        color: #777777;
    }

    /* 提示信息 */
    .notice {
        text-align: center;
        font-size: 14px;
        color: #FF4081;
        margin-top: 20px;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        .banner h1 {
            font-size: 40px;
        }
    }

    @media (max-width: 1200px) {
        .navbar ul {
            flex-direction: column;
        }

        .navbar li {
            margin: 10px 0;
        }
    }

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

    @media (max-width: 768px) {
        .banner h1 {
            font-size: 32px;
        }

        .section h2 {
            font-size: 28px;
        }
    }

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

        .section h2 {
            font-size: 24px;
        }

        .feature-card h3 {
            font-size: 18px;
        }

        .feature-card p {
            font-size: 12px;
        }
    }

    @media (max-width: 320px) {
        .banner h1 {
            font-size: 20px;
        }

        .section h2 {
            font-size: 20px;
        }
    }