/* 全局样式 */
    body {
        margin: 0;
        padding: 0;
        font-family: 'Roboto', sans-serif;
        background: radial-gradient(circle, rgba(255, 87, 34, 0.8), transparent);
        color: #FFFFFF;
        line-height: 1.6;
        overflow-x: hidden;
    }

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

    /* 头部样式 */
    header {
        background: linear-gradient(135deg, #1A2B42, #3A6073);
        padding: 20px 40px;
        position: fixed;
        width: 100%;
        top: 0;
        z-index: 1000;
        box-shadow: 0 2px 5px rgba(0,0,0,0.3);
    }

    header h1 {
        margin: 0;
        font-size: 24px;
        font-family: 'Roboto', sans-serif;
    }

    /* 导航栏样式 */
    nav ul {
        list-style: none;
        display: flex;
        justify-content: flex-end;
        margin: 0;
        padding: 0;
    }

    nav ul li {
        margin-left: 20px;
    }

    nav ul li a {
        color: #FFFFFF;
        text-decoration: none;
        font-size: 16px;
        transition: color 0.3s ease, transform 0.3s ease;
    }

    nav ul li a:hover {
        color: #FF5722;
        transform: scale(1.1);
    }

    /* 主内容区样式 */
    .container {
        padding: 100px 40px 40px 40px;
        max-width: 1200px;
        margin: 0 auto;
    }

    /* 章节样式 */
    section {
        margin-bottom: 60px;
    }

    section h2 {
        font-size: 28px;
        margin-bottom: 20px;
        position: relative;
        display: inline-block;
        padding-bottom: 10px;
    }

    section h2::after {
        content: '';
        width: 50px;
        height: 4px;
        background: linear-gradient(90deg, #6F38C5, #37ABF0);
        position: absolute;
        bottom: 0;
        left: 0;
    }

    /* 文本样式 */
    p {
        font-size: 16px;
        margin-bottom: 20px;
    }

    b {
        color: #FF5722;
    }

    /* 代码块样式 */
    pre {
        background: rgba(255, 255, 255, 0.1);
        padding: 15px;
        border-radius: 8px;
        overflow: auto;
        font-family: 'Courier New', Courier, monospace;
        margin-bottom: 20px;
    }

    code {
        color: #37ABF0;
    }

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

    table, th, td {
        border: 1px solid rgba(255, 255, 255, 0.3);
    }

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

    th {
        background: rgba(63, 81, 181, 0.7);
    }

    /* 列表样式 */
    ul {
        list-style-type: disc;
        padding-left: 20px;
        margin-bottom: 20px;
    }

    /* 图标与图片样式 */
    .icon {
        width: 40px;
        height: 40px;
        display: inline-block;
        background-size: cover;
        margin-right: 10px;
    }

    .image-gallery {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin-bottom: 20px;
    }

    .image-gallery img {
        width: 100%;
        max-width: 320px;
        border-radius: 8px;
    }

    /* 卡片样式 */
    .card {
        background: rgba(255, 255, 255, 0.1);
        border-radius: 8px;
        padding: 20px;
        margin-bottom: 20px;
        transition: transform 0.3s ease, background 0.3s ease;
    }

    .card:hover {
        transform: translateY(-10px);
        background: rgba(255, 255, 255, 0.2);
    }

    /* 按钮样式 */
    .button-primary {
        background: linear-gradient(90deg, #6F38C5, #37ABF0);
        color: #FFFFFF;
        padding: 10px 20px;
        border: none;
        border-radius: 25px;
        cursor: pointer;
        transition: transform 0.3s ease, background 0.3s ease;
        font-size: 16px;
    }

    .button-primary:hover {
        transform: scale(1.05);
        background: linear-gradient(90deg, #37ABF0, #6F38C5);
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        .container {
            max-width: 1140px;
        }
    }

    @media (max-width: 1200px) {
        .container {
            padding: 80px 30px 30px 30px;
        }
    }

    @media (max-width: 1024px) {
        nav ul {
            justify-content: center;
        }

        section h2 {
            font-size: 24px;
        }

        p, li, th, td {
            font-size: 14px;
        }
    }

    @media (max-width: 768px) {
        .image-gallery {
            flex-direction: column;
            align-items: center;
        }

        nav ul li {
            margin-left: 10px;
        }

        .button-primary {
            width: 100%;
            text-align: center;
        }

        .container {
            padding: 70px 20px 20px 20px;
        }
    }

    @media (max-width: 480px) {
        header {
            padding: 15px 20px;
        }

        header h1 {
            font-size: 20px;
        }

        nav ul li a {
            font-size: 14px;
        }

        section h2 {
            font-size: 20px;
        }

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

    @media (max-width: 320px) {
        .image-gallery img {
            max-width: 100%;
        }

        section h2 {
            font-size: 18px;
        }

        p, li, th, td {
            font-size: 12px;
        }
    }

    /* 提示信息样式 */
    .reference-note {
        text-align: center;
        font-size: 14px;
        margin-top: 40px;
        color: #FFD700;
    }

    /* 内部链接样式 */
    a[rel="nofollow"] {
        color: #37ABF0;
        text-decoration: underline;
    }

    a[rel="nofollow"]:hover {
        color: #6F38C5;
    }

    /* 卡片式展示 */
    .card-section {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 20px;
    }

    /* 折叠面板样式 */
    .accordion {
        background: rgba(255, 255, 255, 0.1);
        border-radius: 8px;
        padding: 15px;
        cursor: pointer;
        transition: background 0.3s ease;
    }

    .accordion:hover {
        background: rgba(255, 255, 255, 0.2);
    }

    .accordion-content {
        display: none;
        padding: 10px 0;
    }

    .accordion.active .accordion-content {
        display: block;
    }

    /* 动画应用 */
    .banner-text {
        opacity: 0;
        transform: translateY(20px);
        animation: fadeInUp 1s forwards;
        animation-delay: 0.5s;
    }

    @keyframes fadeInUp {
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* 按钮动画 */
    .pulse {
        animation: pulse 2s infinite;
    }

    @keyframes pulse {
        0% { transform: scale(1); }
        50% { transform: scale(1.05); }
        100% { transform: scale(1); }
    }

    /* 数据可视化样式 */
    .data-visual {
        position: relative;
        overflow: hidden;
    }

    .data-visual::before {
        content: '';
        position: absolute;
        top: 0;
        left: -50%;
        width: 200%;
        height: 100%;
        background: linear-gradient(270deg, rgba(63,81,181,0.5), rgba(111,56,197,0.5), rgba(55,171,240,0.5));
        animation: dataFlow 10s linear infinite;
        z-index: -1;
    }

    @keyframes dataFlow {
        0% { transform: translateX(0); }
        100% { transform: translateX(100%); }
    }