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

    body {
        font-family: 'Roboto Light', sans-serif;
        background: linear-gradient(135deg, #1A1A1A, #2C2C2C);
        color: #FFFFFF;
        line-height: 1.6;
        padding: 20px;
    }

    h1, h2, h3, h4 {
        font-family: 'Montserrat', sans-serif;
        color: #00FFAA;
        margin-bottom: 20px;
    }

    h1 {
        font-size: 36px;
        font-weight: bold;
    }

    h2 {
        font-size: 28px;
    }

    h3 {
        font-size: 24px;
    }

    h4 {
        font-size: 20px;
    }

    p {
        margin-bottom: 15px;
        font-size: 16px;
    }

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

    a::after {
        content: '';
        display: block;
        width: 0;
        height: 2px;
        background: #FF4500;
        transition: width .3s;
        position: absolute;
        left: 0;
        bottom: -5px;
    }

    a:hover::after {
        width: 100%;
    }

    /* 布局样式 */
    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 40px;
        background: rgba(0, 0, 0, 0.7);
        border-radius: 10px;
        box-shadow: 0 8px 16px rgba(0, 255, 170, 0.5);
    }

    .header, .footer {
        background: linear-gradient(135deg, #00FFAA, #00BFFF);
        padding: 20px;
        text-align: center;
        border-radius: 10px;
        margin-bottom: 40px;
    }

    .header h1 {
        margin: 0;
        font-size: 32px;
    }

    .footer p {
        margin: 0;
        font-size: 14px;
    }

    /* 网格布局 */
    .grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: 20px;
        margin-bottom: 40px;
    }

    .card {
        background: rgba(40, 40, 40, 0.8);
        padding: 20px;
        border-radius: 10px;
        box-shadow: 0 4px 8px rgba(255, 215, 0, 0.5);
        position: relative;
        overflow: hidden;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .card:hover {
        transform: scale(1.05);
        box-shadow: 0 8px 16px rgba(255, 215, 0, 0.8);
    }

    .card img {
        width: 100%;
        height: auto;
        border-radius: 5px;
        margin-bottom: 15px;
    }

    .card h3 {
        color: #FFD700;
        margin-bottom: 10px;
    }

    .card p {
        color: #FFFFFF;
    }

    /* 按钮样式 */
    .btn {
        display: inline-block;
        padding: 10px 20px;
        background: #00FFAA;
        color: #1A1A1A;
        border: none;
        border-radius: 5px;
        cursor: pointer;
        transition: transform 0.3s ease, background 0.3s ease;
        text-decoration: none;
    }

    .btn:hover {
        transform: scale(1.1);
        background: #00BFFF;
    }

    /* 表格样式 */
    table {
        width: 100%;
        border-collapse: collapse;
        margin-bottom: 40px;
    }

    table, th, td {
        border: 1px solid #00FFAA;
    }

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

    th {
        background: #00BFFF;
        color: #FFFFFF;
    }

    /* 代码块样式 */
    pre {
        background: #1A1A1A;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        margin-bottom: 20px;
    }

    code {
        color: #FFD700;
        font-family: 'Courier New', Courier, monospace;
    }

    /* 动画效果 */
    @keyframes aurora-move {
        0% {
            background: radial-gradient(circle, rgb(255, 87, 34), transparent);
        }
        50% {
            background: radial-gradient(circle, rgb(0, 255, 170), transparent);
        }
        100% {
            background: radial-gradient(circle, rgb(255, 87, 34), transparent);
        }
    }

    .animated-background {
        animation: aurora-move 15s linear infinite;
    }

    /* 表单样式 */
    input, textarea {
        width: 100%;
        padding: 10px;
        margin-bottom: 15px;
        border: 1px solid #00BFFF;
        border-radius: 5px;
        background: rgba(40, 40, 40, 0.8);
        color: #FFFFFF;
        transition: border 0.3s ease, transform 0.3s ease;
    }

    input:focus, textarea:focus {
        border: 1px solid #FFD700;
        transform: scale(1.02);
        outline: none;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        .container {
            padding: 30px;
        }

        h1 {
            font-size: 30px;
        }

        h2 {
            font-size: 24px;
        }
    }

    @media (max-width: 1200px) {
        .grid {
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        }
    }

    @media (max-width: 1024px) {
        .container {
            padding: 20px;
        }

        h1 {
            font-size: 28px;
        }

        h2 {
            font-size: 20px;
        }
    }

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

        .header, .footer {
            padding: 15px;
        }
    }

    @media (max-width: 480px) {
        h1 {
            font-size: 24px;
        }

        h2 {
            font-size: 18px;
        }

        .btn {
            padding: 8px 16px;
            font-size: 14px;
        }
    }

    @media (max-width: 320px) {
        .container {
            padding: 10px;
        }

        h1 {
            font-size: 20px;
        }

        h2 {
            font-size: 16px;
        }

        p {
            font-size: 14px;
        }
    }