/* 全局样式 */
    @import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600&family=Roboto:wght@400;700&display=swap');

    body {
        margin: 0;
        padding: 0;
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #1A237E, #651FFF, #D500F9);
        color: #FFFFFF;
        line-height: 1.6;
    }

    header {
        position: fixed;
        width: 100%;
        background: rgba(0, 0, 0, 0.7);
        padding: 20px;
        text-align: center;
        z-index: 1000;
    }

    header h1 {
        margin: 0;
        font-family: 'Poppins', sans-serif;
        font-size: 2em;
        background: -webkit-linear-gradient(#FF4081, #E040FB);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
    }

    nav {
        margin-top: 10px;
    }

    nav a {
        color: #FFFFFF;
        margin: 0 15px;
        text-decoration: none;
        font-weight: 600;
        transition: color 0.3s ease;
    }

    nav a:hover {
        color: #FFB300;
    }

    .container {
        padding: 100px 20px 20px 20px;
        max-width: 1200px;
        margin: 0 auto;
        background: rgba(0, 0, 0, 0.5);
        border-radius: 10px;
    }

    section {
        margin-bottom: 50px;
    }

    h2, h3, h4 {
        font-family: 'Poppins', sans-serif;
        color: #FFEB3B;
    }

    h2 {
        font-size: 2em;
        margin-bottom: 20px;
    }

    h3 {
        font-size: 1.5em;
        margin-top: 30px;
    }

    h4 {
        font-size: 1.2em;
        margin-top: 20px;
    }

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

    pre {
        background: #263238;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
    }

    code {
        font-family: 'Roboto Mono', monospace;
        color: #FFCDD2;
    }

    table {
        width: 100%;
        border-collapse: collapse;
        margin: 20px 0;
    }

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

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

    th {
        background: #424242;
    }

    img {
        max-width: 100%;
        height: auto;
        border-radius: 10px;
        margin: 10px 0;
    }

    .notice {
        background: rgba(255, 235, 59, 0.8);
        color: #000000;
        padding: 10px;
        text-align: center;
        border-radius: 5px;
        font-weight: 600;
        margin-bottom: 30px;
    }

    /* 动画效果 */
    @keyframes aurora-move {
        0% { background-position: 0% 50%; }
        50% { background-position: 100% 50%; }
        100% { background-position: 0% 50%; }
    }

    body {
        background: linear-gradient(-45deg, #ee7752, #e73c7e, #23a6d5, #23d5ab);
        background-size: 400% 400%;
        animation: aurora-move 15s ease infinite;
    }

    button {
        background: linear-gradient(90deg, #FF6F00, #FFB300);
        border: none;
        padding: 10px 20px;
        color: #FFFFFF;
        font-size: 1em;
        border-radius: 5px;
        cursor: pointer;
        transition: transform 0.3s, background 0.3s;
    }

    button:hover {
        transform: scale(1.05);
        background: linear-gradient(90deg, #FFA000, #FFD600);
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        header h1 {
            font-size: 1.8em;
        }
    }

    @media (max-width: 1200px) {
        .container {
            padding: 80px 15px 15px 15px;
        }

        nav a {
            margin: 0 10px;
        }
    }

    @media (max-width: 1024px) {
        h2 {
            font-size: 1.8em;
        }

        h3 {
            font-size: 1.3em;
        }
    }

    @media (max-width: 768px) {
        header h1 {
            font-size: 1.5em;
        }

        nav a {
            display: block;
            margin: 10px 0;
        }

        .container {
            padding: 70px 10px 10px 10px;
        }
    }

    @media (max-width: 480px) {
        h2 {
            font-size: 1.5em;
        }

        h3 {
            font-size: 1.1em;
        }

        p, pre, code, table {
            font-size: 0.9em;
        }
    }

    @media (max-width: 320px) {
        header h1 {
            font-size: 1.2em;
        }

        nav a {
            margin: 5px 0;
        }

        .notice {
            font-size: 0.9em;
        }
    }

    /* 附加视觉效果 */
    .parallax {
        background-image: url('https://images.gptkong.com/demo/sample1.png');
        height: 400px;
        background-attachment: fixed;
        background-position: center;
        background-repeat: no-repeat;
        background-size: cover;
        border-radius: 10px;
        margin-bottom: 30px;
    }

    .shape {
        width: 100px;
        height: 100px;
        background: linear-gradient(90deg, #ff9a9e, #fad0c4);
        border-radius: 15px;
        animation: rotate 20s linear infinite;
    }

    @keyframes rotate {
        from { transform: rotate(0deg); }
        to { transform: rotate(360deg); }
    }