/* 基本样式设置 */
    @import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600;700&display=swap');

    :root {
        --primary-color: #1e3c72;
        --secondary-color: #2a5298;
        --accent-pink: #ff6f91;
        --accent-gold: #ffc107;
        --background-gradient: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
        --text-color: #ffffff;
        --subtext-color: #cccccc;
        --border-radius: 15px;
        --shadow-color: rgba(0, 0, 0, 0.2);
        --font-family: 'Poppins', sans-serif;
    }

    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: var(--font-family);
        color: var(--text-color);
        background: var(--background-gradient);
        background-attachment: fixed;
        background-size: cover;
        line-height: 1.6;
        padding: 20px;
    }

    /* 容器 */
    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 20px;
        background: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(10px);
        border-radius: var(--border-radius);
        box-shadow: 0 4px 10px var(--shadow-color);
    }

    /* 导航菜单 */
    .navbar {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 15px 30px;
        background: rgba(0, 0, 0, 0.3);
        border-radius: var(--border-radius);
        margin-bottom: 30px;
    }

    .navbar a {
        color: var(--text-color);
        text-decoration: none;
        margin: 0 15px;
        font-weight: 600;
        transition: color 0.3s ease, transform 0.3s ease;
    }

    .navbar a:hover {
        color: var(--accent-pink);
        transform: scale(1.1);
    }

    /* 头部 */
    header {
        text-align: center;
        padding: 50px 20px;
        background: rgba(0, 0, 0, 0.2);
        border-radius: var(--border-radius);
        margin-bottom: 30px;
    }

    header h1 {
        font-size: 3rem;
        margin-bottom: 20px;
        background: -webkit-linear-gradient(135deg, #ff6f91, #ffc107);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
    }

    header p {
        font-size: 1.2rem;
        color: var(--subtext-color);
    }

    /* 内容区 */
    main {
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
    }

    .card {
        flex: 1 1 calc(33.333% - 20px);
        background: rgba(255, 255, 255, 0.15);
        backdrop-filter: blur(10px);
        border-radius: var(--border-radius);
        padding: 20px;
        box-shadow: 0 4px 10px var(--shadow-color);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .card:hover {
        transform: translateY(-10px);
        box-shadow: 0 8px 20px var(--shadow-color);
    }

    .card img {
        width: 100%;
        height: auto;
        border-radius: var(--border-radius);
        margin-bottom: 15px;
    }

    .card h3 {
        margin-bottom: 10px;
        color: var(--accent-gold);
    }

    .card p {
        font-size: 1rem;
        color: var(--subtext-color);
    }

    /* 示例数据展示 */
    .sample-data {
        width: 100%;
        background: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(10px);
        border-radius: var(--border-radius);
        padding: 20px;
        margin-top: 40px;
        box-shadow: 0 4px 10px var(--shadow-color);
    }

    .sample-data h2 {
        text-align: center;
        margin-bottom: 20px;
        color: var(--accent-pink);
    }

    .sample-data ul {
        list-style: none;
    }

    .sample-data li {
        margin-bottom: 10px;
        padding-left: 20px;
        position: relative;
    }

    .sample-data li::before {
        content: '•';
        position: absolute;
        left: 0;
        color: var(--accent-gold);
    }

    /* 示例文章展示 */
    .sample-article {
        width: 100%;
        background: rgba(0, 0, 0, 0.3);
        backdrop-filter: blur(10px);
        border-radius: var(--border-radius);
        padding: 20px;
        margin-top: 40px;
        box-shadow: 0 4px 10px var(--shadow-color);
    }

    .sample-article h2, .sample-article h3, .sample-article h4 {
        color: var(--accent-gold);
        margin-bottom: 15px;
    }

    .sample-article p {
        margin-bottom: 15px;
        color: var(--text-color);
    }

    .sample-article pre {
        background: rgba(0, 0, 0, 0.5);
        padding: 15px;
        border-radius: var(--border-radius);
        overflow-x: auto;
        margin-bottom: 15px;
    }

    .sample-article code {
        color: var(--accent-pink);
        font-family: 'Courier New', Courier, monospace;
    }

    .sample-article table {
        width: 100%;
        border-collapse: collapse;
        margin-bottom: 20px;
    }

    .sample-article th, .sample-article td {
        border: 1px solid var(--accent-gold);
        padding: 10px;
        text-align: left;
    }

    .sample-article th {
        background: var(--accent-gold);
        color: #000;
    }

    /* 脚注 */
    footer {
        text-align: center;
        padding: 20px;
        margin-top: 40px;
        background: rgba(0, 0, 0, 0.2);
        border-radius: var(--border-radius);
        box-shadow: 0 4px 10px var(--shadow-color);
    }

    footer p {
        color: var(--subtext-color);
    }

    /* 按钮样式 */
    .btn {
        display: inline-block;
        padding: 10px 20px;
        background: var(--accent-pink);
        color: #fff;
        border: none;
        border-radius: var(--border-radius);
        cursor: pointer;
        transition: background 0.3s ease, transform 0.3s ease;
        text-decoration: none;
    }

    .btn:hover {
        background: var(--accent-gold);
        transform: scale(1.05);
    }

    /* 适应不同屏幕尺寸 */
    @media (max-width: 1440px) {
        .card {
            flex: 1 1 calc(33.333% - 20px);
        }
    }

    @media (max-width: 1200px) {
        .card {
            flex: 1 1 calc(50% - 20px);
        }
    }

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

        .card {
            flex: 1 1 100%;
        }
    }

    @media (max-width: 768px) {
        header h1 {
            font-size: 2.5rem;
        }

        .card {
            flex: 1 1 100%;
        }
    }

    @media (max-width: 480px) {
        .navbar a {
            margin: 10px 0;
        }

        header h1 {
            font-size: 2rem;
        }

        .sample-data li {
            padding-left: 15px;
        }
    }

    @media (max-width: 320px) {
        body {
            padding: 10px;
        }

        .navbar {
            padding: 10px 20px;
        }

        header h1 {
            font-size: 1.8rem;
        }
    }

    /* 动画与过渡效果 */
    .fade-in {
        animation: fadeIn 2s ease-in-out;
    }

    @keyframes fadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
    }

    .rotate {
        animation: rotate 20s linear infinite;
    }

    @keyframes rotate {
        from { transform: rotate(0deg); }
        to { transform: rotate(360deg); }
    }

    /* 链接样式 */
    a {
        color: var(--accent-pink);
        text-decoration: none;
        transition: color 0.3s ease;
    }

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

    /* 图片布局 */
    .image-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 10px;
        margin-top: 20px;
    }

    .image-grid img {
        width: 100%;
        height: auto;
        border-radius: var(--border-radius);
        transition: transform 0.3s ease;
    }

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