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

        body {
            font-family: Arial, Helvetica, sans-serif;
            line-height: 1.6;
            color: #333;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            padding: 20px;
        }

        .container {
            max-width: 730px;
            margin: 0 auto;
            background: #ffffff;
            border-radius: 12px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
            overflow: hidden;
        }

        header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            padding: 40px 30px;
            text-align: center;
        }

        h1 {
            color: #ffffff;
            font-size: 2.5em;
            font-weight: 700;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
            margin: 0;
        }

        article {
            padding: 40px 30px;
        }

        article p {
            margin-bottom: 1.2em;
            font-size: 1.05em;
            color: #444;
        }

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

        article strong {
            color: #667eea;
            font-weight: 700;
        }

        article a {
            color: #667eea;
            text-decoration: none;
            font-weight: 700;
            border-bottom: 2px solid transparent;
            transition: border-color 0.3s ease;
        }

        article a:hover {
            border-bottom-color: #667eea;
        }

        .transition-section {
            padding: 30px;
            background: #f8f9fa;
            border-top: 1px solid #e9ecef;
        }

        .transition-section p {
            margin-bottom: 1em;
            font-size: 1.05em;
            color: #555;
        }

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

        .links-section {
            padding: 40px 30px;
            background: #ffffff;
            border-top: 1px solid #e9ecef;
        }

        .links-section h3 {
            color: #667eea;
            font-size: 1.5em;
            margin-bottom: 15px;
            margin-top: 25px;
            padding-bottom: 10px;
            border-bottom: 2px solid #f0f0f0;
        }

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

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

        .links-section li {
            margin-bottom: 12px;
            break-inside: avoid;
            page-break-inside: avoid;
        }

        .links-section a {
            color: #555;
            text-decoration: none;
            display: inline-block;
            padding-left: 18px;
            position: relative;
            transition: color 0.3s ease, padding-left 0.3s ease;
        }

        .links-section a:before {
            content: "→";
            position: absolute;
            left: 0;
            color: #667eea;
            font-weight: 700;
            transition: left 0.3s ease;
        }

        .links-section a:hover {
            color: #667eea;
            padding-left: 24px;
        }

        .links-section a:hover:before {
            left: 4px;
        }

        @media (max-width: 768px) {
            body {
                padding: 10px;
            }

            h1 {
                font-size: 2em;
            }

            header {
                padding: 30px 20px;
            }

            article {
                padding: 30px 20px;
            }

            .transition-section {
                padding: 20px;
            }

            .links-section {
                padding: 30px 20px;
            }

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

            .links-section h3 {
                font-size: 1.3em;
            }
        }

        @media (max-width: 480px) {
            h1 {
                font-size: 1.6em;
            }

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