/* 基础样式重置 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #1e3c72, #2a5298);
        color: #ffffff;
        line-height: 1.6;
        padding: 20px;
    }

    a {
        color: #ff69b4;
        text-decoration: none;
        transition: color 0.3s ease;
    }

    a:hover {
        color: #00bfff;
    }

    header {
        text-align: center;
        padding: 50px 0;
        background: linear-gradient(45deg, #00bfff, #8a2be2, #ff69b4);
        background-size: 400% 400%;
        animation: gradientAnimation 15s ease infinite;
        border-radius: 15px;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    }

    header h1 {
        font-size: 3em;
        background: -webkit-linear-gradient(#00bfff, #ff69b4);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        margin-bottom: 20px;
    }

    header p {
        font-size: 1.2em;
    }

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

    .container {
        max-width: 1200px;
        margin: auto;
        padding: 20px;
    }

    .section {
        margin-bottom: 50px;
    }

    .section-title {
        font-size: 2.5em;
        margin-bottom: 20px;
        text-align: center;
        position: relative;
        display: inline-block;
    }

    .section-title::after {
        content: '';
        width: 50px;
        height: 5px;
        background: #ff69b4;
        position: absolute;
        left: 50%;
        bottom: -10px;
        transform: translateX(-50%);
        border-radius: 5px;
    }

    .cards {
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
        justify-content: center;
    }

    .card {
        background: rgba(255, 255, 255, 0.1);
        border-radius: 10px;
        overflow: hidden;
        width: 300px;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
        position: relative;
    }

    .card:hover {
        transform: translateY(-10px);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
    }

    .card img {
        width: 100%;
        height: 200px;
        object-fit: cover;
    }

    .card-content {
        padding: 15px;
    }

    .card-content h3 {
        margin-bottom: 10px;
        font-size: 1.5em;
        color: #ff69b4;
    }

    .card-content p {
        font-size: 1em;
        color: #dcdcdc;
    }

    pre, code {
        background: rgba(0, 0, 0, 0.5);
        padding: 10px;
        border-radius: 5px;
        font-family: 'Fira Code', monospace;
        overflow-x: auto;
    }

    article {
        background: rgba(255, 255, 255, 0.1);
        padding: 30px;
        border-radius: 15px;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    }

    article h2 {
        font-size: 2.5em;
        margin-bottom: 20px;
        text-align: center;
        color: #00bfff;
    }

    article h3 {
        font-size: 1.8em;
        margin: 20px 0 10px;
        color: #8a2be2;
    }

    table {
        width: 100%;
        border-collapse: collapse;
        margin: 20px 0;
    }

    table, th, td {
        border: 1px solid #dcdcdc;
    }

    th, td {
        padding: 10px;
        text-align: left;
    }

    th {
        background: #2a5298;
        color: #ffffff;
    }

    .footer {
        text-align: center;
        padding: 20px 0;
        background: rgba(0, 0, 0, 0.3);
        border-radius: 10px;
    }

    .loader {
        border: 5px solid #f3f3f3;
        border-top: 5px solid #00bfff;
        border-radius: 50%;
        width: 50px;
        height: 50px;
        animation: spin 2s linear infinite;
        margin: 20px auto;
    }

    @keyframes spin {
        0% { transform: rotate(0deg); }
        100% { transform: rotate(360deg); }
    }

    @media (max-width: 1440px) {
        header h1 {
            font-size: 2.5em;
        }

        .section-title {
            font-size: 2em;
        }

        .card {
            width: 45%;
        }
    }

    @media (max-width: 1200px) {
        .card {
            width: 45%;
        }
    }

    @media (max-width: 1024px) {
        .cards {
            flex-direction: column;
            align-items: center;
        }

        .card {
            width: 80%;
        }
    }

    @media (max-width: 768px) {
        header {
            padding: 30px 0;
        }

        header h1 {
            font-size: 2em;
        }

        .section-title {
            font-size: 1.8em;
        }

        .card {
            width: 100%;
        }
    }

    @media (max-width: 480px) {
        body {
            padding: 10px;
        }

        header h1 {
            font-size: 1.5em;
        }

        .section-title {
            font-size: 1.5em;
        }

        .card {
            width: 100%;
        }

        article {
            padding: 20px;
        }
    }

    @media (max-width: 320px) {
        header h1 {
            font-size: 1.2em;
        }

        .section-title {
            font-size: 1.2em;
        }

        .card-content h3 {
            font-size: 1.2em;
        }

        .card-content p {
            font-size: 0.9em;
        }
    }