/* 基础样式 */
    body {
        margin: 0;
        font-family: 'Merriweather', serif;
        background: radial-gradient(circle, rgba(30, 60, 114, 0.9), transparent);
        color: #333;
        line-height: 1.6;
    }
    
    h1, h2, h3, h4, h5, h6 {
        font-family: 'Poppins', sans-serif;
        color: #1e3c72;
    }
    
    h1 {
        font-size: 2.5rem;
        text-align: center;
        margin: 20px 0;
    }
    
    h2 {
        font-size: 2rem;
        margin-top: 40px;
        border-bottom: 2px solid #2a52be;
        padding-bottom: 10px;
    }
    
    h3 {
        font-size: 1.5rem;
        margin-top: 30px;
        color: #2a52be;
    }
    
    p {
        font-size: 1rem;
        margin: 15px 0;
    }
    
    ul {
        list-style-type: disc;
        margin-left: 20px;
    }
    
    pre {
        background: #f4f4f4;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        font-family: 'Courier New', Courier, monospace;
    }
    
    code {
        background: #e8e8e8;
        padding: 2px 4px;
        border-radius: 3px;
    }
    
    table {
        width: 100%;
        border-collapse: collapse;
        margin: 20px 0;
    }
    
    table, th, td {
        border: 1px solid #ddd;
    }
    
    th, td {
        padding: 12px;
        text-align: left;
    }
    
    th {
        background-color: #2a52be;
        color: #fff;
    }
    
    /* 链接样式 */
    a {
        color: #6c5ce7;
        text-decoration: none;
        position: relative;
    }
    
    a::after {
        content: '';
        position: absolute;
        width: 100%;
        transform: scaleX(0);
        height: 2px;
        bottom: 0;
        left: 0;
        background-color: #6c5ce7;
        transform-origin: bottom right;
        transition: transform 0.25s ease-out;
    }
    
    a:hover::after {
        transform: scaleX(1);
        transform-origin: bottom left;
    }
    
    /* 按钮样式 */
    .button {
        position: relative;
        overflow: hidden;
        background-color: #6c5ce7;
        color: white;
        padding: 10px 20px;
        border: none;
        cursor: pointer;
        border-radius: 5px;
        transition: background-color 0.3s ease;
    }
    
    .button:hover {
        background-color: #5a4fcf;
    }
    
    .button::after {
        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: width 0.4s ease, height 0.4s ease, opacity 0.4s ease;
    }
    
    .button:hover::after {
        width: 150px;
        height: 150px;
        opacity: 1;
    }
    
    /* 栅格系统 */
    .container {
        width: 90%;
        max-width: 1200px;
        margin: auto;
        padding: 20px 0;
    }
    
    .card-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 20px;
        margin: 40px 0;
    }
    
    .card {
        background: rgba(255, 255, 255, 0.9);
        border-radius: 10px;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        padding: 20px;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
        position: relative;
    }
    
    .card:hover {
        transform: translateY(-10px);
        box-shadow: 0 10px 15px rgba(0, 0, 0, 0.2);
    }
    
    .card img {
        width: 100%;
        height: auto;
        border-radius: 5px;
    }
    
    .card h4 {
        margin: 15px 0 10px;
        color: #1e3c72;
    }
    
    .card p {
        font-size: 0.95rem;
        color: #555;
    }
    
    /* 动画效果 */
    @keyframes aurora-move {
        0% { background-position: 0% 50%; }
        50% { background-position: 100% 50%; }
        100% { background-position: 0% 50%; }
    }
    
    .animated-background {
        background: radial-gradient(circle, rgb(255, 87, 34), transparent);
        animation: aurora-move 15s linear infinite;
    }
    
    /* 响应式设计 */
    @media (max-width: 1440px) {
        h1 {
            font-size: 2.2rem;
        }
        h2 {
            font-size: 1.8rem;
        }
        h3 {
            font-size: 1.4rem;
        }
    }
    
    @media (max-width: 1200px) {
        .card-grid {
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        }
    }
    
    @media (max-width: 1024px) {
        .card-grid {
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        }
    }
    
    @media (max-width: 768px) {
        h1 {
            font-size: 2rem;
        }
        h2 {
            font-size: 1.6rem;
        }
        h3 {
            font-size: 1.3rem;
        }
        .card-grid {
            grid-template-columns: 1fr;
        }
    }
    
    @media (max-width: 480px) {
        h1 {
            font-size: 1.8rem;
        }
        h2 {
            font-size: 1.4rem;
        }
        h3 {
            font-size: 1.2rem;
        }
    }
    
    @media (max-width: 320px) {
        h1 {
            font-size: 1.6rem;
        }
        h2 {
            font-size: 1.2rem;
        }
        h3 {
            font-size: 1rem;
        }
    }
    
    /* 表格响应 */
    table {
        width: 100%;
        overflow-x: auto;
    }
    
    /* 提示样式 */
    .reference-note {
        text-align: center;
        font-size: 0.9rem;
        color: #888;
        margin: 20px 0;
    }