/* 全局样式 */
    body {
        margin: 0;
        padding: 0;
        font-family: 'Poppins', 'Inter', sans-serif;
        background: linear-gradient(135deg, #C8D9E7, #E5C9C9, #FFFFFF);
        color: #1F2833;
    }
    header {
        text-align: center;
        padding: 50px 20px;
        background: rgba(255, 255, 255, 0.3);
        backdrop-filter: blur(10px);
    }
    header h1 {
        font-size: 2.5em;
        color: #8A2BE2;
        text-shadow: 2px 2px 5px rgba(0,0,0,0.3);
    }
    nav {
        display: flex;
        justify-content: center;
        gap: 20px;
        margin-top: 20px;
    }
    nav a {
        color: #39FF14;
        text-decoration: none;
        font-weight: bold;
        position: relative;
    }
    nav a::after {
        content: '';
        display: block;
        width: 0;
        height: 2px;
        background: #39FF14;
        transition: width 0.3s;
    }
    nav a:hover::after {
        width: 100%;
    }
    .container {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 20px;
        padding: 40px 20px;
    }
    .card {
        background: rgba(255, 255, 255, 0.5);
        backdrop-filter: blur(10px);
        border-radius: 15px;
        box-shadow: 0 4px 8px rgba(0,0,0,0.2);
        padding: 20px;
        transition: transform 0.3s, box-shadow 0.3s;
    }
    .card:hover {
        transform: translateY(-10px);
        box-shadow: 0 8px 16px rgba(0,0,0,0.3);
    }
    .card img {
        width: 100%;
        border-radius: 10px;
    }
    .card h2 {
        color: #8A2BE2;
        margin-top: 15px;
    }
    .card p {
        color: #1F2833;
        line-height: 1.6;
    }
    footer {
        text-align: center;
        padding: 20px;
        background: rgba(255, 255, 255, 0.3);
        backdrop-filter: blur(10px);
        position: fixed;
        width: 100%;
        bottom: 0;
    }
    /* 响应式设计 */
    @media (max-width: 768px) {
        header h1 {
            font-size: 2em;
        }
        nav {
            flex-direction: column;
        }
    }
    @media (max-width: 480px) {
        .container {
            padding: 20px 10px;
        }
        .card {
            padding: 15px;
        }
    }