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

        body {
            font-family: Optima, Lucida, "MgOpen Cosmetica", "Lucida Sans Unicode", sans-serif;
            font-size: 13px;
            line-height: 1.6;
            color: #333;
            background: #E1E1E1;
        }

        header {
            background: #E1E1E1;
            border-bottom: 2px solid #ccc;
        }

        .header-wrapper {
            max-width: 982px;
            margin: 0 auto;
            padding: 20px;
        }

        .logo {
            font-size: 28px;
            font-weight: bold;
            color: #333;
            text-shadow: 1px 1px 0 #fff;
            margin-bottom: 10px;
        }

        nav {
            background: #f5f5f5;
            border-top: 1px solid #ddd;
            border-bottom: 1px solid #ddd;
        }

        .nav-wrapper {
            max-width: 982px;
            margin: 0 auto;
            padding: 0 20px;
        }

        nav ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 5px;
        }

        nav li {
            position: relative;
        }

        nav a {
            display: block;
            padding: 12px 15px;
            color: #666;
            text-decoration: none;
            font-weight: normal;
            font-size: 14px;
            transition: all 0.3s;
        }

        nav a:hover {
            color: #000;
            background: #efefef;
            text-decoration: none;
        }

        main {
            max-width: 982px;
            margin: 25px auto;
            background: #fff;
            padding: 40px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }

        h1 {
            font-size: 200%;
            line-height: 130%;
            margin: 0 0 25px 0;
            padding: 0 0 15px 0;
            font-weight: normal;
            color: #333;
            text-shadow: 1px 1px 0 #fff;
            border-bottom: 1px solid #e5e5e5;
        }

        article {
            margin-bottom: 40px;
        }

        article h2 {
            font-size: 175%;
            margin: 25px 0 15px 0;
            padding-bottom: 5px;
            font-weight: normal;
            line-height: 135%;
            color: #333;
        }

        article h3 {
            font-size: 150%;
            margin: 20px 0 12px 0;
            padding-bottom: 5px;
            font-weight: normal;
            line-height: 135%;
            color: #333;
        }

        article h4 {
            font-size: 120%;
            margin: 18px 0 10px 0;
            line-height: 130%;
            font-weight: normal;
            color: #333;
        }

        article p {
            margin: 10px 0 15px 0;
            line-height: 160%;
        }

        .transition-section {
            margin: 30px 0;
            padding: 20px 0;
        }

        .transition-section p {
            margin: 10px 0 15px 0;
            line-height: 160%;
        }

        .links-section {
            background: #E6E6E6;
            border: 1px solid #c9c9c9;
            padding: 30px;
            margin-top: 30px;
            border-radius: 3px;
        }

        .links-section h2 {
            font-size: 175%;
            margin: 0 0 20px 0;
            padding-bottom: 10px;
            font-weight: normal;
            color: #333;
            text-shadow: 1px 1px 0 #fff;
        }

        .links-section h3 {
            font-size: 140%;
            margin: 25px 0 12px 0;
            padding-bottom: 5px;
            font-weight: normal;
            color: #333;
            text-shadow: 1px 1px 0 #fff;
        }

        .links-section ul {
            list-style: none;
            margin: 0 0 20px 0;
            padding: 0;
            column-count: 2;
            column-gap: 30px;
        }

        .links-section li {
            margin-bottom: 8px;
            padding-left: 18px;
            background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAcAAAAHCAYAAADEUlfTAAAAE0lEQVR42mNgwAT/oQwQxQgSBgAXxgP9BXRt0QAAAABJRU5ErkJggg==) 2px 8px no-repeat;
            break-inside: avoid;
        }

        .links-section a {
            color: #666;
            text-decoration: none;
            font-weight: normal;
            transition: color 0.2s;
        }

        .links-section a:hover {
            color: #000;
            text-decoration: underline;
        }

        footer {
            background: #fff;
            padding: 30px 20px;
            margin-top: 30px;
            border-top: 2px solid #ccc;
        }

        .footer-wrapper {
            max-width: 982px;
            margin: 0 auto;
            text-align: center;
            color: #666;
            font-size: 12px;
        }

        @media (max-width: 768px) {
            .header-wrapper,
            .nav-wrapper,
            main,
            .footer-wrapper {
                padding: 15px;
            }

            main {
                margin: 15px;
            }

            nav ul {
                flex-direction: column;
                gap: 0;
            }

            nav a {
                padding: 10px 15px;
                border-bottom: 1px solid #e5e5e5;
            }

            h1 {
                font-size: 160%;
            }

            article h2 {
                font-size: 140%;
            }

            article h3 {
                font-size: 125%;
            }

            .links-section {
                padding: 20px 15px;
            }

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

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

            h1 {
                font-size: 140%;
            }

            article h2 {
                font-size: 130%;
            }

            .logo {
                font-size: 22px;
            }
        }