/* 基础重置 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    /* 全局字体与背景 */
    body {
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #000046, #1E003C, #000000);
        color: #FFFFFF;
        line-height: 1.6;
    }

    /* 导航栏样式 */
    header {
        position: fixed;
        top: 0;
        width: 100%;
        background: rgba(0, 0, 0, 0.8);
        padding: 20px 0;
        z-index: 1000;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
    }

    nav {
        width: 90%;
        margin: 0 auto;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    nav a {
        color: #39FF14;
        text-decoration: none;
        margin: 0 15px;
        font-size: 16px;
        transition: color 0.3s ease;
    }

    nav a:hover {
        color: #FF00FF;
    }

    /* 主体内容 */
    main {
        padding-top: 80px;
    }

    .section {
        min-height: 100vh;
        padding: 60px 20px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }

    .section:nth-child(odd) {
        background: linear-gradient(135deg, #1E003C, #000046);
    }

    .section:nth-child(even) {
        background: linear-gradient(135deg, #000046, #1E003C);
    }

    /* 标题样式 */
    h1, h2, h3, h4 {
        font-weight: bold;
        text-shadow: 2px 2px 10px rgba(57, 255, 20, 0.7);
        margin-bottom: 20px;
        text-align: center;
    }

    /* 段落样式 */
    p {
        max-width: 800px;
        margin-bottom: 20px;
        text-align: center;
    }

    /* 按钮样式 */
    .btn {
        display: inline-block;
        padding: 10px 20px;
        background: #39FF14;
        color: #000;
        border: none;
        border-radius: 5px;
        cursor: pointer;
        transition: background 0.3s ease, transform 0.3s ease;
        box-shadow: 0 4px 15px rgba(57, 255, 20, 0.4);
    }

    .btn:hover {
        background: #FF00FF;
        transform: scale(1.05);
    }

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

    /* 代码块样式 */
    pre {
        background: rgba(0, 0, 0, 0.7);
        padding: 20px;
        border-radius: 10px;
        overflow-x: auto;
        max-width: 90%;
        margin: 20px auto;
    }

    code {
        color: #39FF14;
        font-family: 'Courier New', Courier, monospace;
    }

    /* 表格样式 */
    table {
        width: 90%;
        border-collapse: collapse;
        margin: 20px auto;
    }

    table, th, td {
        border: 1px solid #39FF14;
    }

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

    th {
        background: #1E003C;
    }

    /* 动画效果 */
    @keyframes rotate {
        from {
            transform: rotateY(0deg);
        }
        to {
            transform: rotateY(360deg);
        }
    }

    .rotating-object {
        animation: rotate 20s infinite linear;
    }

    /* 导航进度条 */
    .progress-bar {
        position: fixed;
        top: 0;
        left: 0;
        height: 5px;
        background: #39FF14;
        width: 0%;
        z-index: 999;
        transition: width 0.25s ease-out;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        h1 {
            font-size: 2.5em;
        }
        nav a {
            font-size: 14px;
        }
    }

    @media (max-width: 1200px) {
        h1 {
            font-size: 2.2em;
        }
        .btn {
            padding: 8px 16px;
        }
    }

    @media (max-width: 1024px) {
        h1 {
            font-size: 2em;
        }
        nav a {
            margin: 0 10px;
        }
    }

    @media (max-width: 768px) {
        h1 {
            font-size: 1.8em;
        }
        nav {
            flex-direction: column;
        }
        nav a {
            margin: 5px 0;
        }
    }

    @media (max-width: 480px) {
        h1 {
            font-size: 1.5em;
        }
        p {
            font-size: 14px;
        }
        .btn {
            padding: 6px 12px;
            font-size: 14px;
        }
    }

    @media (max-width: 320px) {
        h1 {
            font-size: 1.2em;
        }
        p {
            font-size: 12px;
        }
        .btn {
            padding: 5px 10px;
            font-size: 12px;
        }
    }

    /* 微互动效果 */
    .interactive-button {
        position: relative;
        overflow: hidden;
    }

    .interactive-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: all 0.3s ease;
    }

    .interactive-button:hover::after {
        width: 200%;
        height: 200%;
        opacity: 1;
    }

    /* 提示文字样式 */
    .reference-note {
        font-size: 1em;
        color: #FF00FF;
        text-align: center;
        margin-top: 40px;
    }