@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600;700&family=Roboto:wght@400;500;700&display=swap');

    :root {
        --tech-blue: #0A84FF;
        --neon-purple: #9C27B0;
        --cyber-green: #39FF14;
        --dark-bg: #121212;
        --light-bg: #1E1E1E;
        --text-light: #E0E0E0;
        --text-dark: #FFFFFF;
        --accent-gradient: linear-gradient(135deg, #0A84FF 0%, #9C27B0 50%, #39FF14 100%);
        --font-primary: 'Poppins', 'Roboto', sans-serif;
        --transition-speed: 0.3s;
    }

    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: var(--font-primary);
        background: var(--dark-bg);
        color: var(--text-light);
        line-height: 1.6;
        padding: 20px;
    }

    header {
        text-align: center;
        padding: 50px 0;
        background: var(--accent-gradient);
        color: var(--text-dark);
        border-radius: 15px;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
        margin-bottom: 40px;
    }

    header h1 {
        font-size: 48px;
        margin-bottom: 10px;
        animation: fadeInDown 1s ease-in-out;
    }

    header p {
        font-size: 18px;
        animation: fadeInUp 1s ease-in-out;
    }

    main {
        display: grid;
        grid-template-columns: repeat(12, 1fr);
        gap: 20px;
    }

    .content {
        grid-column: span 8;
        background: var(--light-bg);
        padding: 30px;
        border-radius: 10px;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
        overflow: hidden;
    }

    .sidebar {
        grid-column: span 4;
        background: var(--light-bg);
        padding: 20px;
        border-radius: 10px;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    }

    article h2 {
        font-size: 32px;
        color: var(--text-dark);
        margin-bottom: 20px;
    }

    article h3 {
        font-size: 24px;
        color: var(--neon-purple);
        margin: 20px 0 10px 0;
    }

    article p {
        margin-bottom: 15px;
    }

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

    article table, article th, article td {
        border: 1px solid var(--tech-blue);
    }

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

    article pre {
        background: var(--dark-bg);
        padding: 15px;
        border-radius: 8px;
        overflow-x: auto;
        margin-bottom: 20px;
    }

    article code {
        font-family: 'Roboto Mono', monospace;
        color: var(--cyber-green);
    }

    .sample-display {
        grid-column: span 12;
        background: var(--light-bg);
        padding: 20px;
        border-radius: 10px;
        position: relative;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    }

    .sample-display::before {
        content: '这是一个网页样式设计参考';
        position: absolute;
        top: -15px;
        left: 20px;
        background: var(--neon-purple);
        color: var(--text-dark);
        padding: 5px 10px;
        border-radius: 5px;
        font-size: 14px;
        font-weight: 600;
    }

    .sample-article {
        padding: 20px;
    }

    .sample-article img {
        width: 100%;
        max-width: 320px;
        border-radius: 10px;
        margin: 10px 0;
    }

    .button {
        background-color: var(--tech-blue);
        color: var(--text-dark);
        border: none;
        padding: 10px 20px;
        border-radius: 5px;
        cursor: pointer;
        transition: all var(--transition-speed) ease;
        font-size: 16px;
        margin-top: 10px;
    }

    .button:hover {
        background-color: var(--neon-purple);
        transform: scale(1.05);
        box-shadow: 0 0 10px var(--neon-purple);
    }

    a {
        color: var(--cyber-green);
        text-decoration: none;
        transition: color var(--transition-speed) ease;
    }

    a:hover {
        color: var(--neon-purple);
    }

    footer {
        text-align: center;
        padding: 30px 0;
        margin-top: 40px;
        background: var(--accent-gradient);
        color: var(--text-dark);
        border-radius: 15px;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    }

    @keyframes fadeInDown {
        from {
            opacity: 0;
            transform: translateY(-20px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(20px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    @media (max-width: 1440px) {
        header h1 {
            font-size: 40px;
        }

        .content {
            grid-column: span 9;
        }

        .sidebar {
            grid-column: span 3;
        }
    }

    @media (max-width: 1200px) {
        main {
            grid-template-columns: repeat(8, 1fr);
        }

        .content {
            grid-column: span 6;
        }

        .sidebar {
            grid-column: span 2;
        }
    }

    @media (max-width: 1024px) {
        main {
            grid-template-columns: repeat(6, 1fr);
        }

        .content {
            grid-column: span 6;
        }

        .sidebar {
            grid-column: span 6;
            margin-top: 20px;
        }
    }

    @media (max-width: 768px) {
        main {
            grid-template-columns: repeat(4, 1fr);
        }

        .content {
            grid-column: span 4;
        }

        .sidebar {
            grid-column: span 4;
        }
    }

    @media (max-width: 480px) {
        header h1 {
            font-size: 32px;
        }

        header p {
            font-size: 16px;
        }

        main {
            grid-template-columns: repeat(2, 1fr);
        }

        .content, .sidebar, .sample-display {
            grid-column: span 2;
        }

        .button {
            width: 100%;
            text-align: center;
        }
    }

    @media (max-width: 320px) {
        header h1 {
            font-size: 28px;
        }

        header p {
            font-size: 14px;
        }

        .sample-article img {
            max-width: 100%;
        }
    }