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

        body {
            font-family: Georgia, 'Times New Roman', Times, serif;
            background-color: #999966;
            color: #000000;
            line-height: 1.6;
            padding: 0;
            margin: 0;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            background-color: #FFFFFF;
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
        }

        header {
            background-color: #660000;
            padding: 20px 0;
            border-bottom: 4px solid #990000;
        }

        h1 {
            color: #FFFFFF;
            font-size: 2.5em;
            text-align: center;
            padding: 20px;
            margin: 0;
            font-weight: normal;
            letter-spacing: 1px;
        }

        nav {
            background-color: #000000;
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 100;
        }

        nav ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            margin: 0;
            padding: 0;
        }

        nav ul li {
            margin: 0;
        }

        nav ul li a {
            display: block;
            color: #CCCC99;
            text-decoration: none;
            padding: 12px 18px;
            font-size: 0.95em;
            transition: background-color 0.3s, color 0.3s;
            border-right: 1px solid #333;
        }

        nav ul li:last-child a {
            border-right: none;
        }

        nav ul li a:hover {
            background-color: #660000;
            color: #FFFFFF;
        }

        main {
            background-color: #FFFFFF;
            padding: 40px;
        }

        article {
            max-width: 900px;
            margin: 0 auto 40px;
        }

        article p {
            margin-bottom: 20px;
            font-size: 1.05em;
            text-align: justify;
        }

        article h2 {
            color: #660000;
            margin-top: 30px;
            margin-bottom: 15px;
            font-size: 1.8em;
            border-bottom: 2px solid #CCCC99;
            padding-bottom: 10px;
        }

        article h3 {
            color: #666633;
            margin-top: 25px;
            margin-bottom: 12px;
            font-size: 1.4em;
        }

        article h4 {
            color: #990000;
            margin-top: 20px;
            margin-bottom: 10px;
            font-size: 1.2em;
        }

        .transition-section {
            max-width: 900px;
            margin: 0 auto 40px;
            padding: 30px;
            background-color: #FFFEF8;
            border-left: 4px solid #660000;
        }

        .transition-section p {
            margin-bottom: 15px;
            font-size: 1.05em;
        }

        .links-section {
            max-width: 900px;
            margin: 0 auto;
            padding: 40px;
            background-color: #F5F5E8;
            border: 2px solid #CCCC99;
            border-radius: 8px;
        }

        .links-section h2 {
            color: #660000;
            margin-bottom: 25px;
            font-size: 1.9em;
            text-align: center;
            border-bottom: 3px solid #990000;
            padding-bottom: 15px;
        }

        .links-section h3 {
            color: #666633;
            margin-top: 30px;
            margin-bottom: 15px;
            font-size: 1.5em;
            background-color: #CCCC99;
            padding: 10px 15px;
            border-radius: 4px;
        }

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

        .links-section ul li {
            margin-bottom: 10px;
            break-inside: avoid;
        }

        .links-section ul li a {
            color: #660000;
            text-decoration: none;
            font-size: 1.05em;
            display: inline-block;
            padding: 5px 0;
            transition: color 0.3s, padding-left 0.3s;
            position: relative;
        }

        .links-section ul li a:before {
            content: "→ ";
            color: #990000;
            margin-right: 5px;
        }

        .links-section ul li a:hover {
            color: #990000;
            padding-left: 5px;
        }

        footer {
            background-color: #666633;
            color: #FFFFFF;
            text-align: center;
            padding: 30px 20px;
            margin-top: 40px;
        }

        footer nav {
            background-color: transparent;
            padding: 0;
            position: static;
            margin-bottom: 15px;
        }

        footer nav ul {
            flex-wrap: wrap;
            justify-content: center;
        }

        footer nav ul li a {
            color: #FFFFFF;
            border-right: 1px solid #999966;
            padding: 8px 12px;
            font-size: 0.9em;
        }

        footer nav ul li a:hover {
            background-color: #990000;
        }

        footer p {
            font-size: 0.85em;
            margin-top: 15px;
            color: #CCCC99;
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 1.8em;
                padding: 15px;
            }

            nav ul {
                flex-direction: column;
            }

            nav ul li a {
                border-right: none;
                border-bottom: 1px solid #333;
                padding: 10px;
            }

            main {
                padding: 20px;
            }

            article p {
                text-align: left;
            }

            .links-section {
                padding: 20px;
            }

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

            .transition-section {
                padding: 20px;
            }

            footer nav ul {
                flex-direction: column;
            }

            footer nav ul li a {
                border-right: none;
                border-bottom: 1px solid #999966;
            }
        }

        @media (max-width: 480px) {
            h1 {
                font-size: 1.5em;
            }

            article h2 {
                font-size: 1.4em;
            }

            article h3 {
                font-size: 1.2em;
            }

            .links-section h2 {
                font-size: 1.5em;
            }

            .links-section h3 {
                font-size: 1.2em;
            }
        }