:root {
        --background-color: #1E1E2D;
        --text-color: #FFFFFF;
        --accent-color-green: #4CAF50;
        --accent-color-purple: #7B1FA2;
        --card-background: #2A2A3D;
        --button-hover-green: #3E8E41;
        --input-background: #33334D;
        --input-border: #4CAF50;
        --progress-bg: #33334D;
        --progress-fill: #4CAF50;
        --font-family: 'Roboto', sans-serif;
    }

    *, *::before, *::after {
        box-sizing: border-box;
    }

    body {
        margin: 0;
        padding: 0;
        background: linear-gradient(135deg, #1E1E2D, #000000);
        color: var(--text-color);
        font-family: var(--font-family);
        line-height: 1.6;
        letter-spacing: 0.5px;
        position: relative;
        overflow-x: hidden;
    }

    body::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-image: radial-gradient(circle, rgba(255, 255, 255, 0.05), transparent);
        z-index: -1;
    }

    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 20px;
        transform: skewX(-10deg);
    }

    .container > * {
        transform: skewX(10deg);
    }

    header {
        text-align: center;
        padding: 50px 0;
    }

    header h1 {
        font-size: 2.5em;
        margin-bottom: 10px;
        color: var(--accent-color-purple);
    }

    header p {
        font-size: 1.2em;
        color: var(--accent-color-green);
    }

    .card {
        background-color: var(--card-background);
        border-radius: 8px;
        padding: 20px;
        margin-bottom: 20px;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.5);
        transition: transform 0.3s;
    }

    .card:hover {
        transform: scale(1.05);
    }

    .card-title {
        font-size: 1.5em;
        margin-bottom: 15px;
        color: var(--accent-color-green);
    }

    pre {
        background-color: #2A2A3D;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
    }

    code {
        color: #57C7D4;
        font-family: 'Courier New', Courier, monospace;
    }

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

    table, th, td {
        border: 1px solid var(--accent-color-purple);
    }

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

    th {
        background-color: var(--accent-color-purple);
    }

    button {
        background-color: var(--accent-color-green);
        color: white;
        border: none;
        padding: 10px 20px;
        border-radius: 5px;
        cursor: pointer;
        transition: transform 0.2s, background-color 0.2s;
    }

    button:hover {
        transform: scale(1.1);
        background-color: var(--button-hover-green);
    }

    input {
        background-color: var(--input-background);
        color: white;
        border: 1px solid var(--input-border);
        padding: 10px;
        border-radius: 5px;
        transition: border-color 0.2s;
        width: 100%;
    }

    input:focus {
        border-color: var(--accent-color-purple);
        outline: none;
    }

    .progress-bar {
        width: 100%;
        height: 20px;
        background-color: var(--progress-bg);
        border-radius: 10px;
        overflow: hidden;
        margin: 10px 0;
    }

    .progress-bar-fill {
        height: 100%;
        background-color: var(--accent-color-green);
        width: 50%;
        transition: width 0.5s;
    }

    @media (max-width: 1440px) {
        header h1 {
            font-size: 2em;
        }
    }

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

    @media (max-width: 1024px) {
        header h1 {
            font-size: 1.8em;
        }
    }

    @media (max-width: 768px) {
        .card {
            padding: 15px;
        }

        header h1 {
            font-size: 1.5em;
        }
    }

    @media (max-width: 480px) {
        header h1 {
            font-size: 1.2em;
        }

        .card-title {
            font-size: 1.2em;
        }
    }

    @media (max-width: 320px) {
        header h1 {
            font-size: 1em;
        }

        .card-title {
            font-size: 1em;
        }
    }

    .demo-article {
        background-color: var(--card-background);
        padding: 20px;
        border-radius: 8px;
        margin-top: 40px;
    }

    .demo-article h2, .demo-article h3 {
        color: var(--accent-color-purple);
    }

    .demo-article table th {
        background-color: var(--accent-color-green);
    }

    .image-gallery {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }

    .image-gallery img {
        width: 100px;
        height: 100px;
        object-fit: cover;
        border-radius: 5px;
    }

    .footer {
        text-align: center;
        padding: 30px 0;
        color: var(--accent-color-green);
    }

    .notice {
        position: fixed;
        bottom: 10px;
        right: 10px;
        background-color: rgba(76, 175, 80, 0.8);
        color: white;
        padding: 10px 15px;
        border-radius: 5px;
        font-size: 0.9em;
    }