/* 全局样式 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #2c3e50, #000000);
        color: #E0E0E0;
        line-height: 1.6;
    }

    a {
        color: #00BFFF;
        text-decoration: none;
    }

    a[rel="nofollow"] {
        /* Internal links with rel="nofollow" */
    }

    /* 布局 */
    .container {
        display: grid;
        grid-template-columns: 250px 1fr;
        grid-template-rows: 60px 1fr 40px;
        grid-template-areas:
            "header header"
            "sidebar main"
            "footer footer";
        min-height: 100vh;
    }

    header {
        grid-area: header;
        background: rgba(0, 0, 0, 0.8);
        display: flex;
        align-items: center;
        padding: 0 20px;
        position: fixed;
        width: 100%;
        top: 0;
        z-index: 1000;
        box-shadow: 0 2px 5px rgba(0,0,0,0.5);
    }

    .logo {
        font-size: 24px;
        font-weight: bold;
        color: #FF5722;
    }

    .sidebar {
        grid-area: sidebar;
        background: #1E1E1E;
        padding: 20px;
        position: fixed;
        top: 60px;
        bottom: 40px;
        width: 250px;
        overflow-y: auto;
    }

    .sidebar nav ul {
        list-style: none;
    }

    .sidebar nav ul li {
        margin-bottom: 20px;
    }

    .sidebar nav ul li a {
        color: #E0E0E0;
        font-size: 18px;
        transition: color 0.3s;
    }

    .sidebar nav ul li a:hover {
        color: #00FFC4;
    }

    main {
        grid-area: main;
        margin-left: 250px;
        padding: 80px 40px 60px 40px;
        background: transparent;
    }

    .dashboard {
        display: flex;
        justify-content: space-between;
        margin-bottom: 40px;
    }

    .dashboard .card {
        background: rgba(255, 255, 255, 0.1);
        padding: 20px;
        border-radius: 8px;
        width: 30%;
        text-align: center;
    }

    .dashboard .card h3 {
        margin-bottom: 10px;
        color: #00FFC4;
    }

    .content {
        background: rgba(255, 255, 255, 0.05);
        padding: 20px;
        border-radius: 8px;
    }

    .content h2, .content h3, .content h4 {
        color: #FFFFFF;
        margin-bottom: 15px;
    }

    .content p {
        margin-bottom: 15px;
    }

    pre {
        background: #2c3e50;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
    }

    code {
        color: #FF5722;
        font-family: 'Courier New', Courier, monospace;
    }

    .background-shape {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: radial-gradient(circle, rgba(255,87,34,0.3), transparent);
        animation: aurora-move 15s linear infinite;
        z-index: -1;
    }

    @keyframes aurora-move {
        0% { transform: translate(0, 0); }
        50% { transform: translate(50px, 50px); }
        100% { transform: translate(0, 0); }
    }

    /* 按钮样式 */
    .button-primary {
        background-color: #FF5722;
        color: #FFFFFF;
        border: none;
        padding: 10px 20px;
        font-size: 16px;
        cursor: pointer;
        border-radius: 5px;
        transition: background-color 0.3s, transform 0.3s;
    }

    .button-primary:hover {
        background-color: #FF9800;
        transform: scale(1.05);
    }

    /* 图片样式 */
    .images-gallery {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin-top: 20px;
    }

    .images-gallery img {
        width: 100px;
        height: 100px;
        object-fit: cover;
        border-radius: 5px;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        .dashboard .card {
            width: 32%;
        }
    }

    @media (max-width: 1200px) {
        .container {
            grid-template-columns: 200px 1fr;
        }
        .sidebar {
            width: 200px;
        }
        main {
            margin-left: 200px;
            padding: 80px 20px 60px 20px;
        }
    }

    @media (max-width: 1024px) {
        .dashboard {
            flex-direction: column;
            gap: 20px;
        }

        .dashboard .card {
            width: 100%;
        }

        .images-gallery {
            justify-content: center;
        }
    }

    @media (max-width: 768px) {
        .container {
            grid-template-columns: 1fr;
            grid-template-rows: 60px 1fr 40px;
        }

        .sidebar {
            display: none;
        }

        main {
            margin-left: 0;
            padding: 80px 20px 60px 20px;
        }

        .dashboard {
            flex-direction: column;
        }
    }

    @media (max-width: 480px) {
        header {
            padding: 0 10px;
        }

        .logo {
            font-size: 20px;
        }

        .dashboard .card {
            padding: 15px;
        }

        .button-primary {
            width: 100%;
            padding: 12px 0;
        }

        .images-gallery img {
            width: 80px;
            height: 80px;
        }
    }

    @media (max-width: 320px) {
        .content {
            padding: 15px;
        }

        .dashboard .card {
            padding: 10px;
            font-size: 14px;
        }

        .content h2 {
            font-size: 20px;
        }

        .content h3 {
            font-size: 18px;
        }

        .content p {
            font-size: 14px;
        }
    }