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

        html, body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.6;
            color: #7b8197;
            background-color: #f8f9fa;
        }

        body {
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

        .header-nav {
            background-color: #3d5368;
            padding: 1rem 0;
        }

        .container {
            max-width: 1120px;
            margin: 0 auto;
            padding: 0 1rem;
            width: 100%;
        }

        .hero-section {
            background: linear-gradient(135deg, #3d5368 0%, #34495e 100%);
            padding: 4rem 0;
            text-align: center;
            color: #fff;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        h1 {
            font-size: 2.5rem;
            font-weight: 300;
            margin-bottom: 1rem;
            color: #fff;
            line-height: 1.2;
        }

        .content-wrapper {
            flex: 1;
            background-color: #fff;
        }

        article {
            max-width: 1120px;
            margin: 0 auto;
            padding: 3rem 1rem;
        }

        article h2 {
            color: #34495e;
            font-size: 1.75rem;
            font-weight: 300;
            margin: 2rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #ebeef0;
        }

        article h3 {
            color: #3d5368;
            font-size: 1.35rem;
            font-weight: 400;
            margin: 1.5rem 0 0.75rem;
        }

        article h4 {
            color: #3d5368;
            font-size: 1.15rem;
            font-weight: 400;
            margin: 1.25rem 0 0.5rem;
        }

        article p {
            font-size: 1rem;
            line-height: 1.8;
            margin-bottom: 1rem;
            color: #7b8197;
        }

        article ul, article ol {
            margin: 1rem 0 1rem 2rem;
            color: #7b8197;
        }

        article li {
            margin-bottom: 0.5rem;
            line-height: 1.7;
        }

        .transition-section {
            max-width: 1120px;
            margin: 0 auto;
            padding: 2rem 1rem 3rem;
            background-color: #fff;
        }

        .transition-section p {
            font-size: 1rem;
            line-height: 1.8;
            margin-bottom: 1rem;
            color: #7b8197;
        }

        .links-section {
            background-color: #f8f9fa;
            padding: 3rem 0;
            border-top: 3px solid #ebeef0;
        }

        .links-container {
            max-width: 1120px;
            margin: 0 auto;
            padding: 0 1rem;
        }

        .links-section h3 {
            color: #34495e;
            font-size: 1.5rem;
            font-weight: 300;
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #ebeef0;
        }

        .links-section ul {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr;
            gap: 0.75rem;
            margin-bottom: 2.5rem;
        }

        .links-section li {
            margin: 0;
        }

        .links-section a {
            color: #58a2ec;
            text-decoration: none;
            font-size: 0.95rem;
            display: inline-block;
            padding: 0.25rem 0;
            transition: color 0.3s ease;
        }

        .links-section a:hover {
            color: #34495e;
            text-decoration: underline;
        }

        .footer {
            background-color: #34495e;
            color: #a8b6c3;
            padding: 2rem 0;
            text-align: center;
            margin-top: auto;
        }

        .footer p {
            margin: 0;
            font-size: 0.9rem;
        }

        @media screen and (min-width: 768px) {
            h1 {
                font-size: 3.5rem;
            }

            .hero-section {
                padding: 5rem 0;
            }

            article {
                padding: 4rem 2rem;
            }

            .transition-section {
                padding: 2rem 2rem 4rem;
            }

            .links-section ul {
                grid-template-columns: 1fr 1fr;
                gap: 1rem 2rem;
            }

            .links-container {
                padding: 0 2rem;
            }
        }

        @media screen and (min-width: 1024px) {
            h1 {
                font-size: 4rem;
            }

            .hero-section {
                padding: 6rem 0;
            }

            article h2 {
                font-size: 2rem;
            }

            article h3 {
                font-size: 1.5rem;
            }

            article p, .transition-section p {
                font-size: 1.05rem;
            }

            .links-section {
                padding: 4rem 0;
            }
        }

        @media print {
            .header-nav,
            .footer {
                display: none;
            }

            .hero-section {
                background: #fff;
                color: #000;
                padding: 1rem 0;
            }

            h1 {
                color: #000;
            }

            .links-section {
                background: #fff;
                border-top: 1px solid #000;
            }
        }