/* 全局样式 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }
    html, body {
        height: 100%;
        font-family: 'Roboto', sans-serif;
        color: #ffffff;
        background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
        overflow-x: hidden;
    }
    body {
        animation: aurora-move 15s linear infinite;
        background: radial-gradient(circle, rgba(30, 60, 114, 0.8), transparent);
    }
    @keyframes aurora-move {
        0% { background-position: 0% 50%; }
        50% { background-position: 100% 50%; }
        100% { background-position: 0% 50%; }
    }
    /* 容器样式 */
    .container {
        width: 90%;
        max-width: 1200px;
        margin: 0 auto;
        padding: 20px;
    }
    /* 标题样式 */
    header {
        text-align: center;
        padding: 40px 0;
    }
    header h1 {
        font-size: 3em;
        margin-bottom: 10px;
        color: #ff6f61;
        text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    }
    /* 提示信息样式 */
    .notice {
        text-align: center;
        font-size: 1.2em;
        margin-bottom: 30px;
        color: #ffd700;
    }
    /* 卡片容器样式 */
    .cards {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
        margin-bottom: 50px;
    }
    /* 单个卡片样式 */
    .card {
        background: rgba(255, 255, 255, 0.1);
        border-radius: 15px;
        overflow: hidden;
        box-shadow: 0 4px 15px rgba(0,0,0,0.3);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    .card:hover {
        transform: scale(1.05);
        box-shadow: 0 8px 25px rgba(0,0,0,0.5);
    }
    .card img {
        width: 100%;
        height: 200px;
        object-fit: cover;
    }
    .card-content {
        padding: 15px;
    }
    .card-title {
        font-size: 1.5em;
        margin-bottom: 10px;
        color: #ffdd57;
    }
    .card-description {
        font-size: 1em;
        margin-bottom: 15px;
        color: #d3d3d3;
    }
    .card-tags {
        margin-bottom: 10px;
    }
    .card-tags span {
        background: #ff6f61;
        border-radius: 5px;
        padding: 5px 10px;
        margin-right: 5px;
        font-size: 0.9em;
    }
    .card-action a {
        display: inline-block;
        padding: 10px 20px;
        background: #2a5298;
        color: #ffffff;
        border-radius: 5px;
        text-decoration: none;
        transition: background 0.3s ease;
    }
    .card-action a:hover {
        background: #1e3c72;
    }
    /* 示例展示样式 */
    .sample-article {
        background: rgba(0, 0, 0, 0.5);
        padding: 30px;
        border-radius: 15px;
        box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    }
    .sample-article h2 {
        font-size: 2.5em;
        margin-bottom: 20px;
        color: #ffffff;
        text-align: center;
    }
    .sample-article p {
        font-size: 1.1em;
        line-height: 1.6;
        margin-bottom: 20px;
        color: #d3d3d3;
    }
    .sample-article h3 {
        font-size: 1.8em;
        margin-bottom: 15px;
        color: #ffdd57;
    }
    .sample-article pre {
        background: #1e3c72;
        padding: 15px;
        border-radius: 10px;
        overflow-x: auto;
        margin-bottom: 20px;
    }
    .sample-article code {
        color: #ffffff;
        font-family: 'Courier New', Courier, monospace;
    }
    .sample-article table {
        width: 100%;
        border-collapse: collapse;
        margin-bottom: 20px;
    }
    .sample-article table, .sample-article th, .sample-article td {
        border: 1px solid #555555;
    }
    .sample-article th, .sample-article td {
        padding: 10px;
        text-align: left;
    }
    .sample-article th {
        background: #2a5298;
        color: #ffffff;
    }
    .sample-article ul {
        list-style-type: disc;
        margin-left: 20px;
        margin-bottom: 20px;
    }
    /* 响应式设计 */
    @media (max-width: 320px) {
        header h1 {
            font-size: 2em;
        }
        .card img {
            height: 150px;
        }
        .sample-article h2 {
            font-size: 2em;
        }
    }
    @media (max-width: 480px) {
        header h1 {
            font-size: 2.5em;
        }
        .card img {
            height: 180px;
        }
    }
    @media (max-width: 768px) {
        .cards {
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        }
    }
    @media (max-width: 1024px) {
        .sample-article {
            padding: 20px;
        }
    }
    @media (max-width: 1200px) {
        .container {
            width: 95%;
        }
    }
    @media (min-width: 1440px) {
        header h1 {
            font-size: 3.5em;
        }
        .card img {
            height: 220px;
        }
    }
    /* 代码块样式 */
    pre {
        background: #1e3c72;
        border-left: 5px solid #ff6f61;
        padding: 10px;
        border-radius: 5px;
        overflow-x: auto;
        font-size: 0.95em;
    }
    code {
        color: #ffffff;
        font-family: 'Courier New', Courier, monospace;
    }