/* CSS变量定义 */
    :root {
        --main-bg-color: #1E1E1E;
        --secondary-bg-color: #000000;
        --accent-color-blue: #007AFF;
        --accent-color-purple: #8A2BE2;
        --text-color: #F5F5F5;
        --font-title: 'Roboto', sans-serif;
        --font-body: 'Open Sans', sans-serif;
        --transition-speed: 0.3s;
    }

    /* 全局样式 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        background: linear-gradient(135deg, var(--main-bg-color), var(--secondary-bg-color));
        color: var(--text-color);
        font-family: var(--font-body);
        line-height: 1.6;
        padding: 20px;
    }

    a {
        color: var(--accent-color-blue);
        text-decoration: none;
        transition: color var(--transition-speed);
    }

    a:hover {
        color: var(--accent-color-purple);
    }

    /* 导航栏样式 */
    .navbar {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 15px 30px;
        background-color: rgba(0, 0, 0, 0.8);
        border-bottom: 1px solid #333;
    }

    .navbar .logo {
        font-family: var(--font-title);
        font-size: 1.5em;
        color: var(--accent-color-blue);
    }

    .navbar ul {
        list-style: none;
        display: flex;
    }

    .navbar ul li {
        margin-left: 20px;
    }

    /* Hero Section样式 */
    .hero {
        height: 80vh;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        background: url('https://images.gptkong.com/demo/sample1.png') center center / cover no-repeat;
        position: relative;
        color: var(--text-color);
        text-align: center;
        padding: 0 20px;
    }

    .hero::after {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: radial-gradient(circle, rgba(30,30,30,0.8), transparent);
        z-index: 1;
    }

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

    .hero h1 {
        font-family: var(--font-title);
        font-size: 3em;
        margin-bottom: 20px;
        color: var(--accent-color-purple);
        animation: glow 2s infinite alternate;
    }

    @keyframes glow {
        from {
            text-shadow: 0 0 10px var(--accent-color-purple);
        }
        to {
            text-shadow: 0 0 20px var(--accent-color-blue);
        }
    }

    .hero p {
        font-size: 1.2em;
        max-width: 600px;
    }

    /* 功能卡片样式 */
    .features {
        display: flex;
        justify-content: space-around;
        flex-wrap: wrap;
        margin: 40px 0;
    }

    .feature-card {
        background-color: rgba(30, 30, 30, 0.9);
        border: 1px solid #333;
        border-radius: 10px;
        width: 300px;
        padding: 20px;
        margin: 10px;
        transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    }

    .feature-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 4px 20px rgba(0, 122, 255, 0.5);
    }

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

    .feature-card h3 {
        font-family: var(--font-title);
        color: var(--accent-color-blue);
        margin: 15px 0;
    }

    .feature-card p {
        font-family: var(--font-body);
        color: var(--text-color);
    }

    /* 示例展示样式 */
    .example-section {
        background-color: rgba(0, 0, 0, 0.7);
        padding: 30px;
        border-radius: 10px;
        margin: 40px 0;
    }

    .example-section h2 {
        font-family: var(--font-title);
        color: var(--accent-color-purple);
        margin-bottom: 20px;
    }

    .example-section article {
        margin-bottom: 20px;
    }

    .example-section pre {
        background-color: #2E2E2E;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
    }

    .example-section code {
        color: #00FF7F;
        font-family: 'Courier New', Courier, monospace;
    }

    /* 数据展示样式 */
    .data-section {
        display: flex;
        flex-direction: column;
        gap: 20px;
        margin: 40px 0;
    }

    .data-item {
        background-color: rgba(30, 30, 30, 0.8);
        padding: 20px;
        border-radius: 10px;
        border: 1px solid #333;
    }

    .data-item h4 {
        font-family: var(--font-title);
        color: var(--accent-color-blue);
        margin-bottom: 10px;
    }

    .data-item p {
        font-family: var(--font-body);
        color: var(--text-color);
    }

    /* 图片样式 */
    .images-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 10px;
        margin: 40px 0;
    }

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

    /* 页脚样式 */
    .footer {
        text-align: center;
        padding: 20px;
        background-color: rgba(0, 0, 0, 0.8);
        border-top: 1px solid #333;
        font-family: var(--font-body);
        color: var(--text-color);
    }

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

    @media (max-width: 1200px) {
        .features {
            flex-direction: column;
            align-items: center;
        }

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

    @media (max-width: 1024px) {
        .navbar {
            flex-direction: column;
        }

        .navbar ul {
            flex-direction: column;
            align-items: center;
        }

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

    @media (max-width: 768px) {
        .hero h1 {
            font-size: 1.5em;
        }

        .feature-card {
            width: 90%;
        }

        .images-grid {
            grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
        }
    }

    @media (max-width: 480px) {
        .hero {
            height: 60vh;
        }

        .hero h1 {
            font-size: 1.2em;
        }

        .feature-card {
            width: 100%;
        }
    }

    @media (max-width: 320px) {
        .hero h1 {
            font-size: 1em;
        }

        .navbar {
            padding: 10px 20px;
        }

        .navbar .logo {
            font-size: 1.2em;
        }
    }

    /* 动画与特效 */
    .background-animation {
        background: radial-gradient(circle, rgb(255, 87, 34), transparent);
        animation: aurora-move 15s linear infinite;
    }

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

    /* 按钮样式 */
    .button {
        display: inline-block;
        padding: 10px 20px;
        background-color: var(--accent-color-blue);
        color: var(--text-color);
        border: none;
        border-radius: 5px;
        cursor: pointer;
        transition: transform var(--transition-speed), background-color var(--transition-speed);
    }

    .button:hover {
        transform: scale(1.05);
        background-color: var(--accent-color-purple);
    }