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

        body {
            font-family: Helvetica, Arial, sans-serif;
            font-size: 12px;
            line-height: 1.7em;
            color: #333;
            background-color: #fff;
            min-width: 320px;
        }

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

        header {
            background-color: #f2f2f2;
            border-bottom: 1px solid #d7d7d7;
            padding: 20px 0;
        }

        .logo {
            font-size: 24px;
            font-weight: bold;
            color: #000;
            text-decoration: none;
        }

        nav {
            background-color: #fff;
            border-bottom: 1px solid #000;
            padding: 15px 0;
            margin-bottom: 30px;
        }

        nav ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }

        nav ul li {
            display: inline-block;
        }

        nav ul li a {
            text-decoration: none;
            color: #000;
            font-weight: bold;
            font-size: 14px;
            padding: 5px 10px;
            transition: color 0.1s ease-in;
        }

        nav ul li a:hover {
            color: #666;
        }

        main {
            padding: 30px 0;
        }

        h1 {
            font-size: 3.5em;
            font-weight: normal;
            line-height: 1.1em;
            margin: 15px 0 30px 0;
            color: #000;
        }

        article {
            margin-bottom: 40px;
        }

        article p {
            margin: 0 0 15px 0;
            line-height: 1.7em;
        }

        article h2 {
            font-size: 200%;
            margin: 15px 0;
            line-height: 1.1em;
        }

        article h3 {
            font-size: 175%;
            margin: 15px 0;
            line-height: 1.1em;
        }

        article h4 {
            font-size: 115%;
            margin: 15px 0;
        }

        article ul {
            margin: 0 0 15px 0;
            padding-left: 15px;
        }

        article ul li {
            padding: 0;
            margin: 0 0 5px 0;
            line-height: 1.8em;
        }

        .transition-section {
            margin: 30px 0;
            padding: 20px;
            background-color: #f9f9f9;
            border-radius: 5px;
        }

        .links-section {
            margin: 40px 0;
            padding: 30px;
            background-color: #f9f9f9;
            border: 1px solid #ddd;
            border-radius: 5px;
        }

        .links-section h3 {
            font-size: 175%;
            margin: 20px 0 15px 0;
            line-height: 1.1em;
            color: #000;
        }

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

        .links-section ul li {
            margin: 0 0 8px 0;
            padding: 0 0 0 20px;
            position: relative;
            break-inside: avoid;
        }

        .links-section ul li:before {
            content: "›";
            position: absolute;
            left: 0;
            color: #666;
            font-weight: bold;
        }

        .links-section ul li a {
            color: #0084B4;
            text-decoration: none;
            line-height: 1.7em;
        }

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

        footer {
            background-color: #f2f2f2;
            border-top: 1px solid #d7d7d7;
            padding: 30px 0;
            margin-top: 50px;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }

        .footer-block {
            padding: 15px;
        }

        .footer-block h2 {
            font-size: 200%;
            margin: 0 0 15px 0;
            font-weight: normal;
        }

        .footer-block p {
            margin: 0 0 10px 0;
            line-height: 1.7em;
        }

        @media (max-width: 767px) {
            body {
                font-size: 11px;
            }

            h1 {
                font-size: 2.2em;
            }

            nav ul {
                flex-direction: column;
                gap: 10px;
            }

            .links-section ul {
                columns: 1;
            }

            .footer-content {
                grid-template-columns: 1fr;
            }

            article h2 {
                font-size: 1.6em;
            }

            article h3 {
                font-size: 1.4em;
            }
        }

        @media (min-width: 768px) and (max-width: 959px) {
            .container {
                max-width: 768px;
            }

            h1 {
                font-size: 2.8em;
            }

            .links-section ul {
                columns: 1;
            }
        }

        @media (min-width: 960px) and (max-width: 1199px) {
            .container {
                max-width: 960px;
            }
        }