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

        body {
            font-family: Arial, Helvetica, sans-serif;
            line-height: 1.7;
            background: #e8e8e8;
            font-size: 13px;
            color: #000;
        }

        a {
            color: #000;
            text-decoration: none;
        }

        a:hover {
            color: #888;
        }

        h1, h2, h3, h4, h5, h6 {
            font-weight: normal;
            margin-bottom: 15px;
        }

        h1 {
            font-size: 24px;
            background-color: #111;
            color: #fff;
            padding: 12px 20px;
            border-bottom: 5px solid #ff7f00;
            box-shadow: 0 1px 2px rgba(0, 0, 0, 0.07);
            margin-bottom: 15px;
        }

        h2 {
            font-size: 22px;
            margin-top: 30px;
        }

        h3 {
            font-size: 20px;
            margin-top: 20px;
        }

        h4 {
            font-size: 18px;
        }

        p {
            margin-bottom: 18px;
        }

        strong {
            font-weight: bold;
        }

        em {
            font-style: italic;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }

        .main-wrapper {
            max-width: 960px;
            margin: 0 auto;
            padding: 20px 15px;
        }

        article {
            background: #fff;
            padding: 20px;
            margin-bottom: 40px;
            box-shadow: 0 1px 2px rgba(0, 0, 0, 0.07);
        }

        .transition-section {
            background: #fff;
            padding: 20px;
            margin-bottom: 40px;
            box-shadow: 0 1px 2px rgba(0, 0, 0, 0.07);
        }

        .links-section {
            background: #fff;
            padding: 20px;
            margin-bottom: 40px;
            box-shadow: 0 1px 2px rgba(0, 0, 0, 0.07);
        }

        .links-section h3 {
            font-size: 11px;
            font-weight: bold;
            text-transform: uppercase;
            letter-spacing: 0.2em;
            background: #111;
            color: #fff;
            padding: 6px 20px;
            margin: 0 -20px 15px;
            border-bottom: 3px solid #ff7f00;
        }

        .links-section ul {
            list-style: none;
            margin: 0 0 30px 0;
            padding: 0;
            column-count: 2;
            column-gap: 30px;
        }

        .links-section ul li {
            padding: 3px 0 4px 0;
            margin-bottom: 4px;
            border-bottom: 1px dotted #ccc;
            break-inside: avoid;
        }

        .links-section ul li a {
            padding-left: 15px;
            background: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAICAYAAADED76LAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAADBJREFUeNpiYGBgKABigf///zOgAwbkQEAAhDkwoAOQYkYQhUMEpwJkNlp4MYAAAwB3vQz5XYWHfAAAAABJRU5ErkJggg==') no-repeat 2px 50%;
            display: block;
        }

        .links-section ul li a:hover {
            background-position: 5px 50%;
            color: #888;
        }

        footer {
            background: #fff;
            padding: 20px;
            box-shadow: 0 1px 2px rgba(0, 0, 0, 0.07);
            color: #999;
            font-size: 11px;
            text-align: center;
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 20px;
                padding: 10px 15px;
            }

            .links-section ul {
                column-count: 1;
            }

            article, .transition-section, .links-section, footer {
                padding: 15px;
            }

            .links-section h3 {
                margin: 0 -15px 15px;
            }
        }

        @media (max-width: 480px) {
            body {
                font-size: 12px;
            }

            h1 {
                font-size: 18px;
            }

            h2 {
                font-size: 18px;
            }

            h3 {
                font-size: 16px;
            }
        }