/* 全局样式 */
    body {
        margin: 0;
        padding: 0;
        background: linear-gradient(135deg, #0d47a1, #1976d2, #42a5f5);
        font-family: 'Roboto', sans-serif;
        color: #333333;
        line-height: 1.6;
    }

    h1, h2, h3, h4 {
        color: #ffffff;
        text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
        margin-bottom: 20px;
    }

    h1 {
        font-size: 2.5em;
        text-align: center;
        padding: 20px 0;
    }

    h2 {
        font-size: 2em;
        border-bottom: 2px solid #ff9800;
        padding-bottom: 10px;
    }

    h3 {
        font-size: 1.5em;
        color: #ff9800;
    }

    p {
        margin-bottom: 15px;
        padding: 0 10px;
    }

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

    /* 卡片布局 */
    .cards {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 20px;
        padding: 20px 0;
    }

    .card {
        background: #ffffff;
        border-radius: 10px;
        box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        overflow: hidden;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .card:hover {
        transform: scale(1.05);
        box-shadow: 0 8px 16px rgba(0,0,0,0.2);
    }

    .card img {
        width: 100%;
        height: auto;
        display: block;
    }

    .card-content {
        padding: 15px;
    }

    .card-title {
        font-size: 1.2em;
        margin-bottom: 10px;
        color: #0d47a1;
    }

    .card-description {
        font-size: 1em;
        color: #555555;
    }

    /* 示例展示 */
    .example-section {
        background: rgba(255, 255, 255, 0.8);
        border-radius: 10px;
        padding: 20px;
        margin-top: 40px;
    }

    .example-section h2 {
        color: #0d47a1;
        border-bottom: 1px solid #cccccc;
    }

    pre {
        background: #f5f5f5;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
    }

    code {
        font-family: 'Courier New', Courier, monospace;
        color: #d32f2f;
    }

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

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

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

    th {
        background-color: #0d47a1;
        color: #ffffff;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        body {
            background: linear-gradient(135deg, #1976d2, #42a5f5);
        }
    }

    @media (max-width: 1200px) {
        .container {
            padding: 15px;
        }
    }

    @media (max-width: 1024px) {
        h1 {
            font-size: 2em;
        }
        .cards {
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        }
    }

    @media (max-width: 768px) {
        h1 {
            font-size: 1.8em;
        }
        .cards {
            grid-template-columns: 1fr;
        }
    }

    @media (max-width: 480px) {
        h1 {
            font-size: 1.5em;
        }
        .card-title {
            font-size: 1em;
        }
    }

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

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

    body {
        background-size: 400% 400%;
        animation: aurora-move 15s linear infinite;
    }

    /* 链接样式 */
    a {
        color: #ff9800;
        text-decoration: none;
    }

    a:hover {
        text-decoration: underline;
    }

    a[rel="nofollow"]::after {
        content: "";
    }

    /* 图标样式 */
    svg.icon {
        fill: currentColor;
        width: 24px;
        height: 24px;
        transition: transform 0.2s ease;
    }

    svg.icon:hover {
        transform: rotate(180deg);
    }