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

        body {
            font-family: 'Hiragino Kaku Gothic Pro', 'ヒラギノ角ゴ Pro W3', 'メイリオ', Meiryo, 'MS Pゴシック', sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f5f5f0;
        }

        .container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 20px;
        }

        header {
            background: linear-gradient(135deg, #56a8cc 0%, #417b2a 100%);
            padding: 30px 0;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }

        header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .site-logo {
            color: white;
            font-size: 1.8em;
            font-weight: bold;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
        }

        main {
            background-color: #fff;
            margin: 40px auto;
            padding: 50px 40px;
            border-radius: 10px;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
            max-width: 1100px;
        }

        h1 {
            font-size: 2.2em;
            color: #417b2a;
            margin-bottom: 30px;
            padding-bottom: 15px;
            border-bottom: 3px solid #56a8cc;
            line-height: 1.4;
        }

        article {
            margin-bottom: 50px;
        }

        article h2 {
            font-size: 1.8em;
            color: #417b2a;
            margin: 35px 0 20px;
            padding-left: 15px;
            border-left: 5px solid #56a8cc;
        }

        article h3 {
            font-size: 1.4em;
            color: #333;
            margin: 25px 0 15px;
            padding-bottom: 8px;
            border-bottom: 2px dotted #d8d3bf;
        }

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

        .transition-section {
            background-color: #fafaf7;
            padding: 30px;
            border-radius: 8px;
            border: 1px solid #d8d3bf;
            margin-bottom: 40px;
        }

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

        {% if links %}
        .links-section {
            background: linear-gradient(to bottom, #ffffff 0%, #f9f9f6 100%);
            padding: 40px;
            border-radius: 10px;
            border: 2px solid #d8d3bf;
            margin-bottom: 40px;
        }

        .links-section h3 {
            font-size: 1.6em;
            color: #417b2a;
            margin-bottom: 20px;
            padding-bottom: 12px;
            border-bottom: 3px solid #56a8cc;
        }

        .links-section ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px 30px;
            margin-bottom: 35px;
        }

        .links-section ul:last-child {
            margin-bottom: 0;
        }

        .links-section li {
            padding-left: 20px;
            position: relative;
        }

        .links-section li:before {
            content: "▶";
            position: absolute;
            left: 0;
            color: #56a8cc;
            font-size: 0.8em;
        }

        .links-section a {
            color: #137ea8;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .links-section a:hover {
            color: #417b2a;
            text-decoration: underline;
        }
        {% endif %}

        footer {
            background-color: #417b2a;
            color: white;
            padding: 30px 0;
            text-align: center;
            margin-top: 60px;
        }

        footer p {
            margin: 5px 0;
        }

        @media only screen and (max-width: 768px) {
            header {
                padding: 20px 0;
            }

            .site-logo {
                font-size: 1.3em;
            }

            main {
                margin: 20px auto;
                padding: 30px 20px;
            }

            h1 {
                font-size: 1.6em;
                margin-bottom: 20px;
            }

            article h2 {
                font-size: 1.4em;
                margin: 25px 0 15px;
            }

            article h3 {
                font-size: 1.2em;
            }

            .transition-section {
                padding: 20px;
            }

            {% if links %}
            .links-section {
                padding: 25px 20px;
            }

            .links-section ul {
                grid-template-columns: 1fr;
                gap: 10px;
            }

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

            footer {
                padding: 20px 0;
                font-size: 0.9em;
            }
        }

        @media only screen and (max-width: 480px) {
            h1 {
                font-size: 1.4em;
            }

            article h2 {
                font-size: 1.2em;
            }

            article h3 {
                font-size: 1.1em;
            }

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