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

    /* 变量定义 */
    :root {
        --main-bg-gradient: radial-gradient(circle, rgb(0, 8, 139), transparent);
        --nav-bg-gradient: linear-gradient(135deg, rgba(75, 0, 130, 0.8), rgba(0, 0, 255, 0.8));
        --primary-color: #00ff7f;
        --secondary-color: #ff4500;
        --text-color: #ffffff;
        --font-main: 'Roboto Mono', monospace;
        --font-title: 'Montserrat', sans-serif;
    }

    body {
        font-family: var(--font-main);
        color: var(--text-color);
        background: var(--main-bg-gradient);
        background-size: 400% 400%;
        animation: gradient-animation 15s linear infinite;
        min-height: 100vh;
        display: flex;
        flex-direction: column;
    }

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

    /* 导航栏样式 */
    nav {
        width: 100%;
        padding: 20px;
        background: var(--nav-bg-gradient);
        backdrop-filter: blur(10px);
        display: flex;
        justify-content: space-between;
        align-items: center;
        position: fixed;
        top: 0;
        z-index: 1000;
    }

    nav .logo {
        font-size: 1.5em;
        font-family: var(--font-title);
        color: var(--primary-color);
        text-shadow: 0 0 10px var(--primary-color), 0 0 20px var(--primary-color);
    }

    nav ul {
        list-style: none;
        display: flex;
        gap: 15px;
    }

    nav ul li a {
        color: var(--text-color);
        text-decoration: none;
        font-size: 1em;
        position: relative;
        transition: color 0.3s ease;
    }

    nav ul li a::after {
        content: '';
        position: absolute;
        width: 0;
        height: 2px;
        background: var(--secondary-color);
        left: 0;
        bottom: -5px;
        transition: width 0.3s;
    }

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

    /* 主内容区域 */
    main {
        margin-top: 80px;
        padding: 40px 20px;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 30px;
    }

    .section {
        background: rgba(0, 0, 0, 0.6);
        padding: 20px;
        border-radius: 15px;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
        position: relative;
        overflow: hidden;
    }

    .section::before {
        content: '';
        position: absolute;
        top: -50%;
        left: -50%;
        width: 200%;
        height: 200%;
        background: var(--primary-color);
        opacity: 0.1;
        filter: blur(100px);
        transform: rotate(45deg);
    }

    .section h2 {
        font-family: var(--font-title);
        color: var(--secondary-color);
        margin-bottom: 15px;
        text-shadow: 0 0 5px var(--secondary-color);
    }

    .section p {
        line-height: 1.6;
        margin-bottom: 15px;
    }

    .section pre {
        background: #1e1e1e;
        padding: 15px;
        border-radius: 10px;
        overflow: auto;
        font-family: 'Courier New', Courier, monospace;
        color: #00ff7f;
    }

    .section img {
        width: 100%;
        border-radius: 10px;
        margin-top: 10px;
        animation: float 6s ease-in-out infinite;
    }

    @keyframes float {
        0%, 100% { transform: translateY(0); }
        50% { transform: translateY(-10px); }
    }

    /* 示例展示样式 */
    .example-article {
        background: rgba(255, 255, 255, 0.1);
        padding: 20px;
        border-radius: 15px;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    }

    .example-article h2 {
        font-family: var(--font-title);
        color: var(--primary-color);
        margin-bottom: 10px;
        text-align: center;
        text-shadow: 0 0 10px var(--primary-color);
    }

    .example-article h3 {
        color: var(--secondary-color);
        margin-top: 15px;
        margin-bottom: 10px;
    }

    .example-article p {
        margin-bottom: 10px;
        line-height: 1.6;
    }

    .example-article pre {
        background: #2d2d2d;
        padding: 10px;
        border-radius: 8px;
        overflow: auto;
        font-family: 'Courier New', Courier, monospace;
        color: #00ff7f;
    }

    /* 按钮样式 */
    .btn {
        display: inline-block;
        padding: 10px 20px;
        background: var(--primary-color);
        color: #000;
        text-decoration: none;
        border-radius: 5px;
        transition: background 0.3s ease;
        box-shadow: 0 0 10px var(--primary-color);
    }

    .btn:hover {
        background: var(--secondary-color);
        box-shadow: 0 0 20px var(--secondary-color);
    }

    /* 提示信息 */
    .note {
        text-align: center;
        font-style: italic;
        color: var(--secondary-color);
        margin-top: 20px;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        main {
            padding: 30px 15px;
        }
    }

    @media (max-width: 1200px) {
        nav {
            padding: 15px;
        }

        nav .logo {
            font-size: 1.2em;
        }

        main {
            padding: 25px 10px;
        }

        .section {
            padding: 15px;
        }
    }

    @media (max-width: 1024px) {
        nav ul {
            flex-direction: column;
            gap: 10px;
        }

        main {
            grid-template-columns: 1fr;
            padding: 20px 5px;
        }
    }

    @media (max-width: 768px) {
        nav {
            flex-direction: column;
            align-items: flex-start;
        }

        .section {
            padding: 10px;
        }

        .example-article {
            padding: 15px;
        }
    }

    @media (max-width: 480px) {
        nav .logo {
            font-size: 1em;
        }

        nav ul li a {
            font-size: 0.9em;
        }

        .section h2 {
            font-size: 1.2em;
        }

        .btn {
            padding: 8px 16px;
            font-size: 0.9em;
        }
    }

    @media (max-width: 320px) {
        nav {
            padding: 10px;
        }

        nav ul {
            flex-direction: column;
            gap: 8px;
        }

        main {
            padding: 15px 5px;
        }

        .section {
            padding: 8px;
        }

        .section h2 {
            font-size: 1em;
        }

        .btn {
            padding: 6px 12px;
            font-size: 0.8em;
        }
    }