/* 基础样式 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: 'Poppins', sans-serif;
        background: linear-gradient(135deg, #ffffff, #f0f4f8);
        color: #333333;
        line-height: 1.6;
        padding: 20px;
    }

    h1, h2, h3 {
        color: #111111;
        margin-bottom: 15px;
    }

    h1 {
        font-size: 2.5rem;
        text-align: center;
        margin-top: 20px;
    }

    h2 {
        font-size: 2rem;
        margin-top: 30px;
        border-bottom: 2px solid #17a2b8;
        display: inline-block;
        padding-bottom: 5px;
    }

    h3 {
        font-size: 1.5rem;
        margin-top: 25px;
        color: #17a2b8;
    }

    p {
        margin-bottom: 15px;
        font-size: 1rem;
    }

    a {
        color: #17a2b8;
        text-decoration: none;
        transition: color 0.3s ease;
    }

    a:hover {
        color: #138496;
    }

    a[rel="nofollow"]::after {
        content: '';
    }

    /* 按钮样式 */
    .button-primary, .button-secondary {
        display: inline-block;
        padding: 10px 20px;
        border-radius: 5px;
        text-align: center;
        cursor: pointer;
        transition: all 0.3s ease;
        font-size: 1rem;
        margin: 10px 0;
    }

    .button-primary {
        background-color: #17a2b8;
        color: #ffffff;
        border: none;
    }

    .button-primary:hover {
        background-color: #138496;
    }

    .button-secondary {
        background-color: transparent;
        border: 2px solid #17a2b8;
        color: #17a2b8;
    }

    .button-secondary:hover {
        background-color: #17a2b8;
        color: #ffffff;
    }

    /* 网格布局 */
    .grid-container {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
        margin-top: 30px;
    }

    .grid-item {
        background: #ffffff;
        border: 1px solid #dddddd;
        border-radius: 10px;
        padding: 20px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .grid-item:hover {
        transform: translateY(-10px);
        box-shadow: 0 8px 12px rgba(0,0,0,0.2);
    }

    /* 图像样式 */
    .image-gallery {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin-top: 20px;
        justify-content: center;
    }

    .image-gallery img {
        width: 100%;
        max-width: 320px;
        height: auto;
        border-radius: 5px;
    }

    /* 代码块样式 */
    pre {
        background: #f8f9fa;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        margin-bottom: 20px;
    }

    code {
        font-family: 'Courier New', Courier, monospace;
        color: #d63384;
    }

    /* 动画效果 */
    @keyframes aurora-move {
        0% {
            background: radial-gradient(circle, rgb(255, 87, 34), transparent);
        }
        50% {
            background: radial-gradient(circle, rgb(34, 193, 195), transparent);
        }
        100% {
            background: radial-gradient(circle, rgb(255, 87, 34), transparent);
        }
    }

    .animated-background {
        animation: aurora-move 15s linear infinite;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        h1 {
            font-size: 2.2rem;
        }
        h2 {
            font-size: 1.8rem;
        }
        h3 {
            font-size: 1.3rem;
        }
    }

    @media (max-width: 1200px) {
        .grid-container {
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        }
    }

    @media (max-width: 1024px) {
        h1 {
            font-size: 2rem;
        }
        .grid-container {
            grid-template-columns: 1fr 1fr;
        }
    }

    @media (max-width: 768px) {
        h1 {
            font-size: 1.8rem;
        }
        h2 {
            font-size: 1.6rem;
        }
        .grid-container {
            grid-template-columns: 1fr;
        }
    }

    @media (max-width: 480px) {
        h1 {
            font-size: 1.5rem;
        }
        .button-primary, .button-secondary {
            width: 100%;
            text-align: center;
        }
    }

    @media (max-width: 320px) {
        body {
            padding: 10px;
        }
        h1 {
            font-size: 1.2rem;
        }
        h2 {
            font-size: 1.4rem;
        }
    }

    /* 特定元素样式 */
    .highlight {
        background: linear-gradient(90deg, #17a2b8, #138496);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
    }

    .footer {
        text-align: center;
        margin-top: 40px;
        padding: 20px;
        background: #f8f9fa;
        border-top: 1px solid #dddddd;
    }

    .footer p {
        font-size: 0.9rem;
        color: #555555;
    }

    /* 交互动画 */
    .icon-circle {
        width: 50px;
        height: 50px;
        background-color: #17a2b8;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-size: 20px;
        cursor: pointer;
        transition: all 0.3s ease;
    }

    .icon-circle:hover {
        transform: scale(1.2);
        background-color: #138496;
    }

    /* 半透明网格背景 */
    .semi-transparent-grid {
        background: rgba(0, 0, 0, 0.05);
        border-radius: 10px;
        padding: 20px;
        margin-top: 20px;
    }

    /* 提示样式 */
    .reference-note {
        text-align: center;
        font-style: italic;
        color: #888888;
        margin-top: 30px;
    }