/* 引入字体 */
    @import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;700&display=swap');
    @import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700&display=swap');

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

    body {
        font-family: 'Montserrat', sans-serif;
        background: radial-gradient(circle, rgba(34,193,195,1) 0%, rgba(253,187,45,1) 100%);
        color: #ffffff;
        line-height: 1.6;
        min-height: 100vh;
        display: flex;
        flex-direction: column;
    }

    a {
        color: #ffd700;
        text-decoration: none;
        transition: color 0.3s ease;
    }

    a:hover {
        color: #ff8c00;
    }

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

    /* 导航栏 */
    nav {
        position: fixed;
        top: 0;
        width: 100%;
        background: rgba(0, 0, 0, 0.3);
        padding: 15px 0;
        z-index: 1000;
        transition: background 0.5s ease;
    }

    nav.scrolled {
        background: rgba(0, 0, 0, 0.8);
    }

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

    nav ul li {
        margin: 0 15px;
    }

    nav ul li a {
        font-size: 16px;
        font-weight: 500;
        letter-spacing: 1px;
    }

    /* 头部 */
    header {
        height: 100vh;
        background: linear-gradient(135deg, #8e2de2, #4a00e0);
        display: flex;
        justify-content: center;
        align-items: center;
        position: relative;
        overflow: hidden;
    }

    header::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: url('https://images.gptkong.com/demo/sample1.png') center center/cover no-repeat;
        opacity: 0.3;
    }

    header .content {
        text-align: center;
        z-index: 1;
    }

    header h1 {
        font-size: 48px;
        margin-bottom: 20px;
        font-weight: 700;
        color: #ffffff;
    }

    header p {
        font-size: 20px;
        color: #f0e68c;
    }

    /* 主体内容 */
    main {
        padding: 60px 0;
        background: #ffffff;
        color: #333333;
    }

    main h2 {
        font-size: 32px;
        margin-bottom: 20px;
        text-align: center;
        color: #4a00e0;
    }

    main p {
        font-size: 16px;
        margin-bottom: 15px;
        line-height: 1.8;
    }

    /* 示例展示 */
    .example-display {
        background: rgba(255, 255, 255, 0.2);
        padding: 30px;
        border-radius: 10px;
        margin-bottom: 40px;
        backdrop-filter: blur(10px);
    }

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

    .example-display pre {
        background: rgba(0, 0, 0, 0.7);
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        margin-bottom: 15px;
    }

    .example-display code {
        font-family: 'Roboto', monospace;
        color: #00ff00;
    }

    /* 图片展示 */
    .image-gallery {
        display: flex;
        flex-wrap: wrap;
        gap: 15px;
        justify-content: center;
        margin-bottom: 40px;
    }

    .image-gallery img {
        width: 100%;
        max-width: 320px;
        border-radius: 10px;
        transition: transform 0.3s ease;
    }

    .image-gallery img:hover {
        transform: scale(1.05);
    }

    /* 底部 */
    footer {
        background: #4a00e0;
        color: #ffffff;
        text-align: center;
        padding: 20px 0;
    }

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

        main h2 {
            font-size: 28px;
        }

        nav ul li a {
            font-size: 14px;
        }
    }

    @media (max-width: 1200px) {
        .container {
            width: 95%;
        }

        header h1 {
            font-size: 36px;
        }

        main h2 {
            font-size: 24px;
        }
    }

    @media (max-width: 1024px) {
        nav ul {
            flex-direction: column;
            background: rgba(0, 0, 0, 0.8);
            position: fixed;
            top: 60px;
            left: -100%;
            width: 100%;
            transition: left 0.3s ease;
        }

        nav ul.active {
            left: 0;
        }

        nav ul li {
            margin: 20px 0;
            text-align: center;
        }

        header h1 {
            font-size: 32px;
        }

        main h2 {
            font-size: 22px;
        }
    }

    @media (max-width: 768px) {
        nav ul {
            flex-direction: column;
            background: rgba(0, 0, 0, 0.9);
            position: fixed;
            top: 60px;
            left: -100%;
            width: 100%;
            height: calc(100% - 60px);
            transition: left 0.3s ease;
            padding-top: 30px;
        }

        nav ul.active {
            left: 0;
        }

        nav ul li {
            margin: 30px 0;
            text-align: center;
        }

        header h1 {
            font-size: 28px;
        }

        main h2 {
            font-size: 20px;
        }
    }

    @media (max-width: 480px) {
        nav ul {
            padding-top: 50px;
        }

        nav ul li a {
            font-size: 18px;
        }

        header h1 {
            font-size: 24px;
        }

        main h2 {
            font-size: 18px;
        }
    }

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

        main h2 {
            font-size: 16px;
        }

        .image-gallery img {
            max-width: 100%;
        }
    }

    /* 动画效果 */
    @keyframes aurora-move {
        0% { background-position: 0% 50%; }
        50% { background-position: 100% 50%; }
        100% { background-position: 0% 50%; }
    }

    body {
        background: radial-gradient(circle, rgb(255, 87, 34), transparent);
        animation: aurora-move 15s linear infinite;
    }

    /* 按钮样式 */
    .btn {
        display: inline-block;
        padding: 10px 20px;
        background: #ff8c00;
        color: #ffffff;
        border-radius: 5px;
        transition: background 0.3s ease;
    }

    .btn:hover {
        background: #e68a00;
    }

    /* 卡片样式 */
    .card {
        background: rgba(255, 255, 255, 0.1);
        padding: 20px;
        border-radius: 10px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .card:hover {
        transform: translateY(-10px);
        box-shadow: 0 10px 15px rgba(0,0,0,0.2);
    }

    /* 表格样式 */
    table {
        width: 100%;
        border-collapse: collapse;
        margin-bottom: 20px;
    }

    table th, table td {
        border: 1px solid #dddddd;
        text-align: left;
        padding: 8px;
    }

    table th {
        background-color: #4a00e0;
        color: white;
    }

    table tr:nth-child(even) {
        background-color: rgba(0, 0, 0, 0.05);
    }

    /* 提示信息 */
    .notice {
        background: rgba(255, 255, 255, 0.2);
        padding: 15px;
        border-left: 5px solid #ff8c00;
        margin-bottom: 20px;
    }

    /* 响应式图片 */
    .responsive-img {
        width: 100%;
        height: auto;
        border-radius: 10px;
    }