/* Global Styles */
    body {
        margin: 0;
        padding: 0;
        font-family: 'Lato', sans-serif;
        background: linear-gradient(135deg, #1E272E, #0D1117);
        color: #FFFFFF;
        line-height: 1.6;
    }

    h1, h2, h3, h4 {
        font-family: 'Roboto', sans-serif;
        color: #FFC300;
    }

    a {
        color: #FFC300;
        text-decoration: none;
        transition: color 0.3s ease;
    }

    a:hover {
        color: #FFA800;
    }

    /* Container */
    .container {
        width: 90%;
        max-width: 1200px;
        margin: 0 auto;
        padding: 20px;
    }

    /* Header */
    header {
        background: linear-gradient(135deg, #4B535A, #1E272E);
        padding: 40px 0;
        text-align: center;
        position: relative;
    }

    header h1 {
        font-size: 2.5em;
        margin-bottom: 10px;
    }

    header p {
        font-size: 1.2em;
        color: #B0B8C1;
    }

    /* Navigation */
    nav {
        position: fixed;
        top: 0;
        width: 100%;
        background: rgba(30, 39, 46, 0.9);
        padding: 10px 0;
        z-index: 1000;
        box-shadow: 0 2px 5px rgba(0,0,0,0.5);
    }

    nav ul {
        list-style: none;
        display: flex;
        justify-content: center;
        margin: 0;
        padding: 0;
    }

    nav ul li {
        margin: 0 15px;
    }

    nav ul li a {
        color: #FFFFFF;
        font-size: 1em;
        padding: 5px 10px;
        transition: background 0.3s ease, color 0.3s ease;
    }

    nav ul li a:hover {
        background: #FFC300;
        color: #1E272E;
        border-radius: 5px;
    }

    /* Banner */
    .banner {
        background: url('https://images.gptkong.com/demo/sample1.png') center center/cover no-repeat;
        height: 60vh;
        display: flex;
        align-items: center;
        justify-content: center;
        position: relative;
    }

    .banner::after {
        content: '这是一个网页样式设计参考';
        position: absolute;
        bottom: 20px;
        right: 20px;
        background: rgba(0,0,0,0.7);
        padding: 10px 20px;
        border-radius: 10px;
        font-size: 1em;
    }

    .banner-content {
        text-align: center;
        color: #FFFFFF;
        z-index: 1;
    }

    .banner-content h2 {
        font-size: 3em;
        margin-bottom: 20px;
    }

    .banner-content p {
        font-size: 1.2em;
        max-width: 600px;
        margin: 0 auto;
    }

    /* Features */
    .features {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
        padding: 60px 0;
    }

    .feature {
        background: rgba(75, 83, 90, 0.8);
        padding: 20px;
        border-radius: 10px;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .feature:hover {
        transform: translateY(-10px);
        box-shadow: 0 10px 20px rgba(0,0,0,0.3);
    }

    .feature img {
        width: 100%;
        height: auto;
        border-radius: 5px;
    }

    .feature h3 {
        margin-top: 15px;
        font-size: 1.5em;
    }

    .feature p {
        color: #B0B8C1;
        margin-top: 10px;
    }

    /* Article Section */
    article {
        background: rgba(30, 39, 46, 0.9);
        padding: 40px;
        border-radius: 10px;
        margin: 40px 0;
    }

    article h2 {
        font-size: 2em;
        margin-bottom: 20px;
        color: #FFC300;
    }

    article h3 {
        font-size: 1.5em;
        margin-top: 30px;
        color: #FFA800;
    }

    article h4 {
        font-size: 1.2em;
        margin-top: 20px;
        color: #FFD700;
    }

    article p {
        margin-top: 15px;
        color: #D3D3D3;
    }

    article ul {
        list-style: disc inside;
        margin-top: 10px;
        color: #D3D3D3;
    }

    article pre {
        background: #1E272E;
        padding: 20px;
        border-radius: 5px;
        overflow-x: auto;
        margin-top: 15px;
    }

    article code {
        color: #FFC300;
        font-family: 'Courier New', Courier, monospace;
    }

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

    article table, article th, article td {
        border: 1px solid #4B535A;
    }

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

    /* Sample Data Section */
    .sample-data {
        background: rgba(30, 39, 46, 0.85);
        padding: 40px;
        border-radius: 10px;
        margin: 40px 0;
    }

    .sample-data h2 {
        font-size: 2em;
        margin-bottom: 20px;
        color: #FFC300;
    }

    .sample-data ul {
        list-style: none;
        padding: 0;
    }

    .sample-data li {
        background: rgba(75, 83, 90, 0.8);
        margin-bottom: 15px;
        padding: 20px;
        border-radius: 5px;
        transition: background 0.3s ease;
    }

    .sample-data li:hover {
        background: rgba(255, 195, 0, 0.8);
    }

    .sample-data li h3 {
        margin-top: 0;
        color: #FFFFFF;
    }

    .sample-data li p {
        color: #D3D3D3;
    }

    .sample-data li img {
        width: 50px;
        height: 50px;
        margin-top: 10px;
    }

    /* Footer */
    footer {
        background: linear-gradient(135deg, #4B535A, #1E272E);
        padding: 20px 0;
        text-align: center;
        color: #B0B8C1;
    }

    footer p {
        margin: 5px 0;
    }

    footer a {
        color: #FFC300;
    }

    /* Responsive Design */
    @media (max-width: 1440px) {
        .banner-content h2 {
            font-size: 2.5em;
        }

        .banner-content p {
            font-size: 1em;
        }
    }

    @media (max-width: 1200px) {
        nav ul {
            flex-direction: column;
            background: rgba(30, 39, 46, 0.95);
            position: absolute;
            top: 50px;
            left: -100%;
            width: 100%;
            transition: left 0.3s ease;
        }

        nav ul.active {
            left: 0;
        }

        nav ul li {
            margin: 15px 0;
        }

        .menu-toggle {
            display: block;
            position: absolute;
            right: 20px;
            top: 15px;
            cursor: pointer;
        }

        .menu-toggle div {
            width: 25px;
            height: 3px;
            background: #FFFFFF;
            margin: 5px 0;
            transition: all 0.3s ease;
        }
    }

    @media (max-width: 768px) {
        .features {
            grid-template-columns: 1fr;
        }

        .banner {
            height: 40vh;
        }

        .banner-content h2 {
            font-size: 2em;
        }

        .banner-content p {
            font-size: 0.9em;
        }
    }

    @media (max-width: 480px) {
        nav ul {
            flex-direction: column;
            left: -100%;
        }

        nav ul.active {
            left: 0;
        }

        .banner {
            height: 30vh;
        }

        .banner-content h2 {
            font-size: 1.5em;
        }

        .banner-content p {
            font-size: 0.8em;
        }

        .feature h3 {
            font-size: 1.2em;
        }
    }

    @media (max-width: 320px) {
        .banner-content h2 {
            font-size: 1.2em;
        }

        .banner-content p {
            font-size: 0.7em;
        }

        nav ul {
            background: rgba(30, 39, 46, 0.95);
        }

        .feature h3 {
            font-size: 1em;
        }
    }

    /* Buttons */
    .btn {
        display: inline-block;
        background: #FFC300;
        color: #1E272E;
        padding: 10px 20px;
        border: none;
        border-radius: 5px;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
        cursor: pointer;
        text-align: center;
    }

    .btn:hover {
        transform: scale(1.05);
        box-shadow: 0 4px 8px rgba(0,0,0,0.3);
    }

    /* Code Blocks */
    pre {
        background: #1E272E;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
    }

    code {
        color: #FFC300;
        font-family: 'Courier New', Courier, monospace;
    }

    /* Images */
    .decorative-img {
        width: 100%;
        max-width: 320px;
        height: auto;
        border-radius: 5px;
        margin: 10px 0;
    }

    /* Animations */
    @keyframes fadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
    }

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

    /* Table Styles */
    table {
        width: 100%;
        border-collapse: collapse;
        margin-top: 20px;
    }

    table, th, td {
        border: 1px solid #4B535A;
    }

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

    th {
        background: #FFC300;
        color: #1E272E;
    }