@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&family=Futura:wght@700&display=swap');

    :root {
        --primary-color: #1E2A5B; /* 深蓝 */
        --secondary-color: #7400B8; /* 紫色 */
        --accent-color: #38F9D7;   /* 荧光绿 */
        --highlight-color: #FF5733; /* 橙红 */
        --background-gradient: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
        --text-color: #FFFFFF;
        --code-background: #2D2D2D;
        --code-color: #F8F8F2;
        --button-hover: rgba(255, 255, 255, 0.2);
        --font-body: 'Roboto', sans-serif;
        --font-heading: 'Futura', sans-serif;
    }

    body {
        margin: 0;
        padding: 0;
        background: var(--background-gradient);
        color: var(--text-color);
        font-family: var(--font-body);
        line-height: 1.6;
    }

    h1, h2, h3 {
        font-family: var(--font-heading);
        color: var(--accent-color);
        margin-top: 1.5em;
        margin-bottom: 0.5em;
    }

    p {
        margin-bottom: 1em;
    }

    pre {
        background: var(--code-background);
        color: var(--code-color);
        padding: 1em;
        border-radius: 5px;
        overflow-x: auto;
        font-family: 'Courier New', Courier, monospace;
        margin-bottom: 1em;
    }

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

    a {
        color: var(--accent-color);
        text-decoration: none;
    }

    a:hover {
        text-decoration: underline;
    }

    table {
        width: 100%;
        border-collapse: collapse;
        margin-bottom: 1em;
    }

    th, td {
        border: 1px solid var(--accent-color);
        padding: 0.5em;
        text-align: left;
    }

    th {
        background-color: var(--secondary-color);
    }

    ul {
        list-style-type: disc;
        margin-left: 2em;
        margin-bottom: 1em;
    }

    .button {
        display: inline-block;
        padding: 0.75em 1.5em;
        background-color: var(--accent-color);
        color: var(--text-color);
        border: none;
        border-radius: 25px;
        cursor: pointer;
        position: relative;
        overflow: hidden;
        transition: background-color 0.3s ease;
    }

    .button:hover {
        background-color: var(--highlight-color);
    }

    .button::after {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        width: 0;
        height: 0;
        background: rgba(255, 255, 255, 0.5);
        border-radius: 50%;
        transform: translate(-50%, -50%);
        opacity: 0;
        transition: all 0.5s ease;
    }

    .button:hover::after {
        width: 200px;
        height: 200px;
        opacity: 1;
    }

    .parallax-layer {
        position: relative;
        background-size: cover;
        background-attachment: fixed;
        height: 100vh;
        width: 100%;
    }

    .layer-1 { 
        background-image: url('https://images.gptkong.com/demo/sample1.png'); 
        transform: translateZ(-1px) scale(2); 
    }

    .layer-2 { 
        background-image: url('https://images.gptkong.com/demo/sample2.png'); 
        transform: translateZ(-2px) scale(3); 
    }

    .layer-3 { 
        background-image: url('https://images.gptkong.com/demo/sample3.png'); 
        transform: translateZ(-3px) scale(4); 
    }

    .content {
        padding: 2em;
        max-width: 1200px;
        margin: 0 auto;
        background: rgba(0, 0, 0, 0.6);
        border-radius: 10px;
    }

    img {
        max-width: 100%;
        height: auto;
        border-radius: 5px;
        margin-bottom: 1em;
    }

    /* Responsive Design */
    @media (max-width: 1440px) {
        .content {
            padding: 1.5em;
        }
    }

    @media (max-width: 1200px) {
        .content {
            padding: 1.2em;
        }
    }

    @media (max-width: 1024px) {
        .content {
            padding: 1em;
        }
    }

    @media (max-width: 768px) {
        h1 {
            font-size: 2em;
        }
        h2 {
            font-size: 1.5em;
        }
        h3 {
            font-size: 1.2em;
        }
    }

    @media (max-width: 480px) {
        .button {
            padding: 0.5em 1em;
        }
    }

    @media (max-width: 320px) {
        .content {
            padding: 0.8em;
        }
    }

    /* Code Block Styles */
    .code-block {
        background: var(--code-background);
        color: var(--code-color);
        padding: 1em;
        border-radius: 5px;
        overflow-x: auto;
        font-family: 'Courier New', Courier, monospace;
        margin-bottom: 1em;
    }

    /* Table Styles */
    table {
        width: 100%;
        border-collapse: collapse;
        margin-bottom: 1em;
    }

    th, td {
        border: 1px solid var(--accent-color);
        padding: 0.75em;
        text-align: left;
    }

    th {
        background-color: var(--secondary-color);
    }

    /* List Styles */
    ul {
        list-style-type: disc;
        margin-left: 2em;
        margin-bottom: 1em;
    }

    /* Footer Styles */
    footer {
        text-align: center;
        padding: 1em 0;
        background: rgba(0, 0, 0, 0.8);
        color: var(--text-color);
        font-size: 0.9em;
    }