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

    /* 根元素变量定义 */
    :root {
        --primary-color: #0D47A1; /* 深蓝色 */
        --secondary-color: #FFFFFF; /* 白色 */
        --accent-color: #8E24AA; /* 霓虹紫 */
        --background-gradient: radial-gradient(circle at top left, #1A237E, #0D47A1, #1976D2);
        --text-color: #FFFFFF;
        --font-primary: 'Exo 2.0', sans-serif;
        --font-secondary: 'Roboto Mono', monospace;
        --transition-speed: 0.5s;
    }

    body {
        font-family: var(--font-secondary);
        background: var(--background-gradient);
        color: var(--text-color);
        line-height: 1.6;
        padding: 20px;
        background-size: cover;
        animation: backgroundMove 15s linear infinite;
    }

    @keyframes backgroundMove {
        0% { background-position: 0% 50%; }
        50% { background-position: 100% 50%; }
        100% { background-position: 0% 50%; }
    }

    header {
        text-align: center;
        padding: 50px 0;
        background: rgba(0, 0, 0, 0.5);
        border-radius: 10px;
        margin-bottom: 30px;
    }

    header h1 {
        font-family: 'Exo 2.0', sans-serif;
        font-size: 48px;
        color: var(--accent-color);
        margin-bottom: 10px;
        text-shadow: 2px 2px 4px rgba(0,0,0,0.7);
    }

    header p {
        font-size: 18px;
        color: #B3E5FC;
    }

    nav {
        display: flex;
        justify-content: center;
        gap: 20px;
        margin-bottom: 40px;
    }

    nav a {
        text-decoration: none;
        color: var(--secondary-color);
        font-size: 18px;
        position: relative;
        transition: color var(--transition-speed);
    }

    nav a::after {
        content: '';
        display: block;
        width: 0;
        height: 2px;
        background: var(--accent-color);
        transition: width var(--transition-speed);
        position: absolute;
        bottom: -5px;
        left: 50%;
        transform: translateX(-50%);
    }

    nav a:hover {
        color: var(--accent-color);
    }

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

    main {
        display: flex;
        flex-direction: column;
        gap: 30px;
    }

    article {
        background: rgba(255, 255, 255, 0.1);
        padding: 20px;
        border-radius: 10px;
        box-shadow: 0 8px 16px rgba(0,0,0,0.3);
    }

    article h2 {
        font-family: var(--font-primary);
        font-size: 32px;
        color: var(--accent-color);
        margin-bottom: 15px;
    }

    article h3 {
        font-family: var(--font-primary);
        font-size: 24px;
        color: var(--accent-color);
        margin-top: 20px;
        margin-bottom: 10px;
    }

    article h4 {
        font-family: var(--font-primary);
        font-size: 20px;
        color: var(--accent-color);
        margin-top: 15px;
        margin-bottom: 10px;
    }

    article p {
        font-size: 16px;
        color: #E3F2FD;
        margin-bottom: 15px;
    }

    article pre {
        background: rgba(0, 0, 0, 0.7);
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        font-family: var(--font-secondary);
        font-size: 14px;
        color: #B3E5FC;
    }

    article table {
        width: 100%;
        border-collapse: collapse;
        margin: 15px 0;
    }

    article table, article th, article td {
        border: 1px solid #90CAF9;
    }

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

    article th {
        background: var(--accent-color);
        color: var(--secondary-color);
    }

    .sample-data {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 20px;
    }

    .sample-data div {
        background: rgba(255, 255, 255, 0.2);
        padding: 15px;
        border-radius: 8px;
        text-align: center;
        box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    }

    .sample-data img {
        width: 100%;
        height: auto;
        border-radius: 5px;
        margin-bottom: 10px;
    }

    footer {
        text-align: center;
        padding: 20px 0;
        background: rgba(0, 0, 0, 0.5);
        border-radius: 10px;
        margin-top: 30px;
    }

    footer p {
        font-size: 16px;
        color: #B3E5FC;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        header h1 {
            font-size: 40px;
        }
        article h2 {
            font-size: 28px;
        }
    }

    @media (max-width: 1200px) {
        nav {
            flex-direction: column;
            gap: 10px;
        }
        nav a {
            font-size: 16px;
        }
    }

    @media (max-width: 1024px) {
        main {
            padding: 0 10px;
        }
        .sample-data {
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        }
    }

    @media (max-width: 768px) {
        header h1 {
            font-size: 32px;
        }
        article h2 {
            font-size: 24px;
        }
        nav a {
            font-size: 14px;
        }
    }

    @media (max-width: 480px) {
        header h1 {
            font-size: 24px;
        }
        article h2 {
            font-size: 20px;
        }
        .sample-data {
            grid-template-columns: 1fr;
        }
    }

    @media (max-width: 320px) {
        body {
            padding: 10px;
        }
        header p, footer p {
            font-size: 14px;
        }
    }