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

        html {
            height: 100%;
            min-height: 100%;
        }

        body {
            font: normal 13px/1.8 Arial, Helvetica, sans-serif;
            color: #555;
            background: #f6f6f6;
            min-height: 100%;
        }

        a {
            text-decoration: none;
            color: #333;
            transition: color 0.15s linear;
        }

        a:hover {
            color: #fc764a;
        }

        h1, h2, h3, h4, h5 {
            margin: 0;
            padding: 0;
            font-weight: normal;
            color: #333;
        }

        h1 {
            font-size: 40px;
            line-height: 1.2;
            text-transform: uppercase;
            margin: 0 0 30px;
            padding: 20px 0;
            border-bottom: 4px solid #f0f0f0;
        }

        h2 {
            font-size: 30px;
            line-height: 1.3;
            text-transform: uppercase;
            margin: 30px 0 20px;
        }

        h3 {
            font-size: 18px;
            line-height: 1.4;
            text-transform: uppercase;
            margin: 20px 0 12px;
            color: #222;
        }

        p {
            margin: 0.5em 0 1em;
        }

        .wrapper {
            max-width: 1200px;
            margin: 0 auto;
            background: #fff;
            padding: 30px;
            margin-top: 50px;
            border-bottom: 4px solid #333;
        }

        header {
            padding: 22px 0;
            margin-bottom: 30px;
            border-bottom: 1px solid #ebebeb;
        }

        .logo {
            font-size: 32px;
            line-height: 1;
            color: #222;
            font-weight: normal;
            text-transform: uppercase;
        }

        nav {
            margin: 20px 0 40px;
            padding: 11px;
            border: 1px solid #ebebeb;
            border-radius: 3px;
            background: #7b9ef8;
        }

        nav ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            margin: 0;
            padding: 0;
        }

        nav li {
            margin: 0;
        }

        nav a {
            display: block;
            padding: 0 18px;
            height: 42px;
            line-height: 45px;
            font-size: 16px;
            text-transform: uppercase;
            color: #f6f6f6;
            text-shadow: 0 -1px 0 #5674c3;
            border-right: 1px solid #85a6fb;
            transition: background 0.3s linear;
        }

        nav li:first-child a {
            border-left: 1px solid #698ae0;
        }

        nav a:hover {
            background: #85a6fb;
            color: #fff;
        }

        article {
            margin-bottom: 40px;
            line-height: 1.8;
        }

        article img {
            max-width: 100%;
            height: auto;
            display: block;
            margin: 20px 0;
            padding: 6px;
            background: #efefef;
            border: 1px solid #e5e5e5;
        }

        .transition-section {
            margin: 40px 0;
            padding: 20px 0;
        }

        .links-section {
            margin: 40px 0;
            padding: 30px;
            background: #f8f8f8;
            border: 1px solid #ebebeb;
            border-radius: 3px;
        }

        .links-section h3 {
            font-size: 18px;
            margin: 30px 0 15px;
            padding-bottom: 6px;
            border-bottom: 1px solid #e5e5e5;
        }

        .links-section h3:first-child {
            margin-top: 0;
        }

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

        .links-section li {
            padding: 8px 0;
            border-bottom: 1px solid #eee;
            break-inside: avoid;
            page-break-inside: avoid;
        }

        .links-section li a {
            display: block;
            font-size: 13px;
            padding-left: 18px;
            background: url('data:image/png;base64,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') no-repeat 0 10px;
        }

        .links-section li a:hover {
            color: #fc764a;
        }

        footer {
            margin-top: 40px;
            padding: 20px 0;
            border-top: 1px solid #e5e5e5;
            font-size: 11px;
            color: #888;
            text-align: center;
        }

        @media (max-width: 768px) {
            .wrapper {
                padding: 20px;
                margin-top: 20px;
            }

            h1 {
                font-size: 28px;
                margin-bottom: 20px;
            }

            h2 {
                font-size: 22px;
            }

            nav ul {
                flex-direction: column;
            }

            nav a {
                border-right: none;
                border-bottom: 1px solid #698ae0;
            }

            nav li:first-child a {
                border-left: none;
            }

            .links-section {
                padding: 20px;
            }

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

        @media (max-width: 480px) {
            h1 {
                font-size: 24px;
            }

            h2 {
                font-size: 20px;
            }

            h3 {
                font-size: 16px;
            }

            nav a {
                font-size: 14px;
                padding: 0 15px;
            }
        }