:root {
        --primary-color: #0074D9; /* 科技蓝 */
        --secondary-color: #FFC300; /* 金色 */
        --accent-color: #2ECC40; /* 绿色 */
        --background-gradient: linear-gradient(135deg, #6FB1FC, #4364F7, #6843E0);
        --font-main: 'Roboto', sans-serif;
        --font-title: 'Poppins', sans-serif;
    }

    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: var(--font-main);
        background: var(--background-gradient);
        color: #333;
        line-height: 1.6;
        padding: 20px;
    }

    header {
        position: fixed;
        top: 0;
        width: 100%;
        background-color: rgba(255, 255, 255, 0.9);
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 10px 20px;
        z-index: 1000;
    }

    header .logo {
        font-family: var(--font-title);
        font-size: 1.5em;
        color: var(--primary-color);
    }

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

    nav ul li a {
        text-decoration: none;
        color: #333;
        transition: color 0.3s;
    }

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

    .hero {
        margin-top: 70px;
        text-align: center;
        padding: 50px 20px;
        background: rgba(255, 255, 255, 0.8);
        border-radius: 10px;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    }

    .hero h1 {
        font-family: var(--font-title);
        font-size: 2.5em;
        color: var(--primary-color);
        margin-bottom: 20px;
    }

    .hero p {
        font-size: 1.2em;
        color: #555;
    }

    .content {
        display: grid;
        grid-template-columns: 1fr;
        gap: 20px;
        margin: 20px 0;
    }

    @media(min-width: 768px) {
        .content {
            grid-template-columns: 1fr 1fr;
        }
    }

    article {
        background: rgba(255, 255, 255, 0.9);
        padding: 20px;
        border-radius: 10px;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    }

    article h2, article h3, article h4 {
        font-family: var(--font-title);
        color: var(--primary-color);
        margin-bottom: 10px;
    }

    article p {
        margin-bottom: 15px;
    }

    article pre {
        background: #f4f4f4;
        padding: 10px;
        border-radius: 5px;
        overflow-x: auto;
    }

    article code {
        font-family: 'Courier New', Courier, monospace;
        color: var(--secondary-color);
    }

    .image-gallery {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        justify-content: center;
    }

    .image-gallery img {
        width: 100px;
        height: 100px;
        object-fit: cover;
        border-radius: 5px;
    }

    footer {
        text-align: center;
        padding: 20px;
        background-color: rgba(255, 255, 255, 0.9);
        border-radius: 10px;
        box-shadow: 0 -2px 5px rgba(0, 0, 0, 0.1);
        margin-top: 20px;
    }

    .note {
        text-align: center;
        font-style: italic;
        color: #777;
        margin-top: 10px;
    }

    /* 动画效果 */
    @keyframes fadeInOut {
        0% { opacity: 0; }
        50% { opacity: 1; }
        100% { opacity: 0; }
    }

    .animated {
        animation: fadeInOut 15s linear infinite;
        background: radial-gradient(circle, rgb(255, 87, 34), transparent);
    }

    /* 代码块样式 */
    .code-example {
        background: #2d2d2d;
        color: #ccc;
        padding: 15px;
        border-radius: 5px;
        font-family: 'Courier New', Courier, monospace;
        overflow-x: auto;
    }

    /* 按钮样式 */
    .button {
        background-color: var(--secondary-color);
        color: white;
        border: none;
        padding: 10px 20px;
        border-radius: 5px;
        cursor: pointer;
        transition: box-shadow 0.3s;
    }

    .button:hover {
        box-shadow: 0 0 10px var(--secondary-color);
    }