/* 基础样式 */
    body {
        margin: 0;
        padding: 0;
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #0F4C81, #FF6B35);
        color: #ffffff;
        line-height: 1.6;
        display: flex;
        flex-direction: column;
        min-height: 100vh;
    }

    /* 容器样式 */
    .container {
        width: 90%;
        max-width: 1200px;
        margin: 0 auto;
        padding: 20px;
        background: rgba(255, 255, 255, 0.1);
        border-radius: 15px;
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    }

    /* 标题样式 */
    h1, h2, h3, h4 {
        font-family: 'Inter', sans-serif;
        font-weight: bold;
        color: #ffffff;
        margin-top: 20px;
        margin-bottom: 10px;
    }

    h1 {
        font-size: 2.5rem;
        letter-spacing: 1px;
    }

    h2 {
        font-size: 2rem;
    }

    h3 {
        font-size: 1.75rem;
    }

    h4 {
        font-size: 1.5rem;
    }

    /* 段落样式 */
    p {
        font-size: 1rem;
        margin-bottom: 15px;
    }

    /* 代码块样式 */
    pre {
        background: rgba(0, 0, 0, 0.7);
        padding: 15px;
        border-radius: 10px;
        overflow-x: auto;
        margin-bottom: 20px;
    }

    pre code {
        font-family: 'Courier New', Courier, monospace;
        color: #00FF00;
        white-space: pre-wrap;
        word-wrap: break-word;
    }

    /* 表格样式 */
    table {
        width: 100%;
        border-collapse: collapse;
        margin-bottom: 20px;
    }

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

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

    th {
        background-color: rgba(255, 107, 53, 0.8);
    }

    /* 图片样式 */
    img {
        width: 100%;
        max-width: 320px;
        height: auto;
        border-radius: 10px;
        margin: 10px;
    }

    /* 按钮样式 */
    .button {
        position: relative;
        display: inline-block;
        padding: 10px 20px;
        background-color: #FF6B35;
        color: #ffffff;
        text-decoration: none;
        border-radius: 5px;
        overflow: hidden;
        transition: background 0.3s ease;
    }

    .button::before {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        width: 0;
        height: 0;
        background: rgba(255, 255, 255, 0.5);
        border-radius: 50%;
        transform: translate(-50%, -50%);
        opacity: 0;
        transition: all 0.3s ease;
    }

    .button:hover::before {
        width: 200%;
        height: 200%;
        opacity: 1;
    }

    /* 表单验证样式 */
    input[type="text"]:valid {
        border-color: green;
    }

    input[type="text"]:invalid {
        border-color: red;
    }

    input[type="text"] {
        border: 2px solid #ccc;
        border-radius: 5px;
        padding: 10px;
        transition: border-color 0.3s ease;
        width: 100%;
        box-sizing: border-box;
        margin-bottom: 15px;
    }

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

    body {
        background: radial-gradient(circle, rgba(255,87,34,1) 0%, rgba(15,76,129,1) 100%);
        animation: aurora-move 15s linear infinite;
        background-size: 400% 400%;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        h1 {
            font-size: 2.2rem;
        }

        h2 {
            font-size: 1.8rem;
        }

        h3 {
            font-size: 1.6rem;
        }

        h4 {
            font-size: 1.3rem;
        }
    }

    @media (max-width: 1200px) {
        .container {
            width: 95%;
        }
    }

    @media (max-width: 1024px) {
        h1 {
            font-size: 2rem;
        }

        h2 {
            font-size: 1.6rem;
        }

        h3 {
            font-size: 1.4rem;
        }

        h4 {
            font-size: 1.2rem;
        }
    }

    @media (max-width: 768px) {
        h1 {
            font-size: 1.8rem;
        }

        h2 {
            font-size: 1.4rem;
        }

        h3 {
            font-size: 1.2rem;
        }

        h4 {
            font-size: 1rem;
        }

        .button {
            padding: 8px 16px;
        }

        pre {
            padding: 10px;
        }
    }

    @media (max-width: 480px) {
        h1 {
            font-size: 1.6rem;
        }

        h2 {
            font-size: 1.2rem;
        }

        h3 {
            font-size: 1rem;
        }

        h4 {
            font-size: 0.9rem;
        }

        .container {
            padding: 15px;
        }

        pre {
            padding: 8px;
        }
    }

    @media (max-width: 320px) {
        h1 {
            font-size: 1.4rem;
        }

        h2 {
            font-size: 1rem;
        }

        h3 {
            font-size: 0.9rem;
        }

        h4 {
            font-size: 0.8rem;
        }

        .button {
            padding: 6px 12px;
            font-size: 0.9rem;
        }

        pre {
            padding: 6px;
        }
    }