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

    body {
        font-family: 'Montserrat', sans-serif;
        background: linear-gradient(135deg, #00B4DB, #0083B0);
        animation: gradient-flow 15s infinite;
        color: #ffffff;
        line-height: 1.6;
    }

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

    header {
        position: fixed;
        top: 0;
        width: 100%;
        background: rgba(0, 0, 0, 0.5);
        padding: 20px 50px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        z-index: 1000;
    }

    header .logo {
        font-size: 1.5rem;
        font-weight: bold;
    }

    nav a {
        color: #ffffff;
        text-decoration: none;
        margin-left: 20px;
        font-size: 1rem;
        transition: color 0.3s ease;
    }

    nav a:hover {
        color: #ff7f50;
    }

    .container {
        padding: 100px 20px 50px 20px;
        max-width: 1200px;
        margin: 0 auto;
    }

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

    h1 {
        font-size: 3rem;
        font-weight: bold;
        text-align: center;
        margin-bottom: 40px;
    }

    p {
        font-size: 1rem;
        color: #dcdcdc;
        margin-bottom: 20px;
    }

    pre, code {
        background: rgba(255, 255, 255, 0.1);
        padding: 10px;
        border-radius: 5px;
        overflow-x: auto;
        font-family: 'Courier New', Courier, monospace;
    }

    .button {
        background-color: #00B4DB;
        color: white;
        padding: 10px 20px;
        border: none;
        cursor: pointer;
        transition: all 0.3s ease;
        border-radius: 5px;
    }

    .button:hover {
        background-color: #0083B0;
        transform: scale(1.1);
    }

    .card {
        background-color: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(10px);
        padding: 20px;
        border-radius: 10px;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
        margin-bottom: 30px;
    }

    .circle-decor {
        width: 100px;
        height: 100px;
        background-color: #ff7f50;
        border-radius: 50%;
        position: absolute;
        top: 20%;
        left: 30%;
        opacity: 0.3;
    }

    .gradient-background {
        background: linear-gradient(135deg, #00B4DB 0%, #0083B0 100%);
        animation: gradient-flow 10s infinite;
    }

    table {
        width: 100%;
        border-collapse: collapse;
        margin-top: 20px;
    }

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

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

    th {
        background-color: rgba(0, 0, 0, 0.3);
    }

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

        h1 {
            font-size: 2.5rem;
        }
    }

    @media (max-width: 1200px) {
        .container {
            padding: 80px 20px 40px 20px;
        }

        nav a {
            margin-left: 15px;
            font-size: 0.9rem;
        }
    }

    @media (max-width: 1024px) {
        header {
            padding: 10px 20px;
        }

        h1 {
            font-size: 2rem;
        }

        .button {
            padding: 8px 16px;
            font-size: 0.9rem;
        }
    }

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

        nav {
            margin-top: 10px;
        }

        .circle-decor {
            display: none;
        }
    }

    @media (max-width: 480px) {
        h1 {
            font-size: 1.5rem;
        }

        nav a {
            margin-left: 10px;
            font-size: 0.8rem;
        }
    }

    @media (max-width: 320px) {
        .container {
            padding: 60px 10px 30px 10px;
        }

        h1 {
            font-size: 1.2rem;
        }

        .button {
            padding: 6px 12px;
            font-size: 0.7rem;
        }
    }