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

        html {
            font-size: 16px;
        }

        body {
            font-family: "Open Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            line-height: 1.7;
            color: #333;
            background: #e7e7e2;
            max-width: 100%;
            overflow-x: hidden;
        }

        header {
            background: #69A6CC;
            padding: 30px 20px;
            text-align: center;
            margin-bottom: 30px;
        }

        header h1 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin: 0;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        article {
            background: #fff;
            padding: 40px;
            margin-bottom: 30px;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
        }

        article h2 {
            font-size: 1.5rem;
            color: #333;
            margin: 1.5em 0 0.8em;
            font-weight: 600;
            line-height: 1.35;
        }

        article h3 {
            font-size: 1.25rem;
            color: #333;
            margin: 1.3em 0 0.7em;
            font-weight: 600;
            line-height: 1.35;
        }

        article h4 {
            font-size: 1.1rem;
            color: #333;
            margin: 1.2em 0 0.6em;
            font-weight: 600;
            line-height: 1.35;
        }

        article p {
            font-size: 1.0625rem;
            line-height: 1.75;
            color: #555;
            margin-bottom: 1.5em;
        }

        article p:last-child {
            margin-bottom: 0;
        }

        article a {
            color: #69A6CC;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        article a:hover {
            color: #397CA7;
            text-decoration: underline;
        }

        article ul,
        article ol {
            margin: 0 0 1.5em 1.5em;
        }

        article li {
            margin-bottom: 0.5em;
            line-height: 1.75;
            color: #555;
        }

        article blockquote {
            padding: 20px 30px;
            background: #f9f9f9;
            border-left: 4px solid #69A6CC;
            margin: 1.5em 0;
            font-style: italic;
            color: #666;
        }

        article strong {
            font-weight: 600;
            color: #333;
        }

        article em {
            font-style: italic;
        }

        .transition-section {
            background: #fff;
            padding: 40px;
            margin-bottom: 30px;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
        }

        .transition-section p {
            font-size: 1.0625rem;
            line-height: 1.75;
            color: #555;
            margin-bottom: 1.5em;
        }

        .transition-section p:last-child {
            margin-bottom: 0;
        }

        .links-section {
            background: #fff;
            padding: 40px;
            margin-bottom: 30px;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
        }

        .links-section h3 {
            font-size: 1.25rem;
            color: #333;
            margin: 0 0 1em;
            font-weight: 600;
            padding-bottom: 10px;
            border-bottom: 2px solid #e6e6e6;
        }

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

        .links-section li {
            margin: 0 0 0.8em;
            padding: 0;
            break-inside: avoid;
        }

        .links-section a {
            color: #69A6CC;
            text-decoration: none;
            font-size: 0.9375rem;
            transition: color 0.2s ease;
            display: inline-block;
        }

        .links-section a:hover {
            color: #397CA7;
        }

        footer {
            background: #151515;
            padding: 40px 20px;
            text-align: center;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 30px;
        }

        footer p {
            font-size: 0.875rem;
            margin: 0;
        }

        @media screen and (max-width: 768px) {
            header {
                padding: 20px 15px;
            }

            header h1 {
                font-size: 1.5rem;
            }

            article,
            .transition-section,
            .links-section {
                padding: 25px 20px;
            }

            article h2 {
                font-size: 1.3rem;
            }

            article h3 {
                font-size: 1.15rem;
            }

            article p,
            .transition-section p {
                font-size: 1rem;
            }

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

            .container {
                padding: 0 15px;
            }
        }

        @media screen and (min-width: 769px) and (max-width: 1024px) {
            article,
            .transition-section,
            .links-section {
                padding: 35px 30px;
            }
        }

        @media screen and (max-width: 480px) {
            html {
                font-size: 14px;
            }

            header h1 {
                font-size: 1.3rem;
            }

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