/* 基本样式与字体设置 */
    body {
        margin: 0;
        padding: 0;
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #1e3c72, #2a5298);
        color: #ffffff;
        line-height: 1.6;
    }

    h1, h2, h3, h4 {
        font-family: 'Poppins', sans-serif;
        color: #ffffff;
        margin-bottom: 20px;
    }

    h1 {
        font-size: 2.5em;
        text-align: center;
        margin-top: 40px;
        text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    }

    h2 {
        font-size: 2em;
        border-bottom: 2px solid #ff8c00;
        padding-bottom: 10px;
    }

    h3 {
        font-size: 1.75em;
        color: #ff8c00;
        margin-top: 30px;
    }

    p {
        font-size: 1em;
        margin-bottom: 15px;
        padding: 0 20px;
    }

    /* 导航栏样式 */
    .navbar {
        position: fixed;
        top: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.2);
        backdrop-filter: blur(10px);
        display: flex;
        justify-content: center;
        padding: 15px 0;
        z-index: 1000;
        box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    }

    .navbar a {
        color: #ffffff;
        text-decoration: none;
        margin: 0 15px;
        font-size: 1em;
        transition: color 0.3s;
    }

    .navbar a:hover {
        color: #ff8c00;
    }

    /* 主容器与网格布局 */
    .container {
        max-width: 1200px;
        margin: 100px auto 50px auto;
        padding: 20px;
    }

    .grid-container {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 20px;
    }

    .card {
        background: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(10px);
        border-radius: 15px;
        padding: 20px;
        box-shadow: 0 8px 32px rgba(0,0,0,0.2);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .card:hover {
        transform: scale(1.05);
        box-shadow: 0 12px 40px rgba(0,0,0,0.3);
    }

    /* 按钮样式 */
    .btn {
        display: inline-block;
        padding: 10px 20px;
        background: #ff8c00;
        color: #ffffff;
        border: none;
        border-radius: 25px;
        cursor: pointer;
        transition: background 0.3s ease;
        text-decoration: none;
        font-size: 1em;
    }

    .btn:hover {
        background: #ffa733;
    }

    /* 图片样式 */
    .images {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        justify-content: center;
        margin: 30px 0;
    }

    .images img {
        width: 100%;
        max-width: 320px;
        border-radius: 10px;
        object-fit: cover;
    }

    /* 代码块样式 */
    pre {
        background: rgba(0, 0, 0, 0.7);
        padding: 15px;
        border-radius: 10px;
        overflow-x: auto;
        font-family: 'Courier New', Courier, monospace;
        color: #00ff00;
        margin: 20px 0;
    }

    code {
        font-family: 'Courier New', Courier, monospace;
        color: #00ff00;
    }

    /* 表格样式 */
    table {
        width: 100%;
        border-collapse: collapse;
        margin: 20px 0;
        background: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(10px);
    }

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

    th, td {
        padding: 12px;
        text-align: center;
    }

    th {
        background: #ff8c00;
        color: #ffffff;
    }

    /* 动画效果 */
    @keyframes fadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
    }

    .fade-in {
        animation: fadeIn 2s ease-in-out;
    }

    /* 响应式设计 */
    @media (max-width: 320px) {
        h1 {
            font-size: 1.8em;
        }
        .navbar a {
            margin: 0 5px;
            font-size: 0.9em;
        }
    }

    @media (max-width: 480px) {
        h1 {
            font-size: 2em;
        }
        .card {
            padding: 15px;
        }
        .btn {
            font-size: 0.9em;
            padding: 8px 16px;
        }
    }

    @media (max-width: 768px) {
        .container {
            margin: 120px auto 30px auto;
            padding: 15px;
        }
        h2 {
            font-size: 1.75em;
        }
    }

    @media (max-width: 1024px) {
        .grid-container {
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        }
        h2 {
            font-size: 2em;
        }
    }

    @media (max-width: 1200px) {
        .images img {
            max-width: 280px;
        }
    }

    @media (min-width: 1440px) {
        h1 {
            font-size: 3em;
        }
        .navbar a {
            font-size: 1.2em;
        }
    }

    /* 其他视觉设计要素 */
    .glass-effect {
        background: rgba(255, 255, 255, 0.2);
        backdrop-filter: blur(15px);
        border-radius: 20px;
        padding: 20px;
        box-shadow: 0 8px 32px rgba(0,0,0,0.2);
    }

    .highlight {
        color: #ff8c00;
        font-weight: bold;
    }

    /* 按钮涟漪效果 */
    .ripple {
        position: relative;
        overflow: hidden;
    }

    .ripple::after {
        content: "";
        position: absolute;
        width: 100px;
        height: 100px;
        background: rgba(255, 255, 255, 0.3);
        border-radius: 50%;
        transform: scale(0);
        opacity: 0;
        transition: transform 0.5s, opacity 1s;
    }

    .ripple:active::after {
        transform: scale(4);
        opacity: 1;
        transition: 0s;
    }

    /* 表单及不可编辑项隐藏 */
    input, textarea, select, button[type="submit"] {
        display: none;
    }