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

        body {
            font-family: Arial, sans-serif;
            line-height: 1.6;
            color: #656565;
            background-color: #f5f5f5;
        }

        header {
            background: linear-gradient(to bottom, #669999 0%, #558888 100%);
            padding: 20px 0;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }

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

        .logo {
            color: #fff;
            font-size: 28px;
            font-weight: bold;
            margin-bottom: 15px;
            text-shadow: 1px 1px 2px rgba(0,0,0,0.2);
        }

        nav {
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 5px;
            padding: 10px;
        }

        nav ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 5px;
        }

        nav ul li {
            flex: 1;
            min-width: 120px;
        }

        nav a {
            display: block;
            color: #fff;
            text-decoration: none;
            padding: 10px 15px;
            text-align: center;
            border-radius: 3px;
            transition: background-color 0.3s ease;
        }

        nav a:hover {
            background-color: rgba(255, 255, 255, 0.2);
        }

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

        main {
            background-color: #fff;
            margin: 30px auto;
            padding: 40px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        h1 {
            color: #669999;
            font-size: 32px;
            margin-bottom: 30px;
            padding-bottom: 15px;
            border-bottom: 3px solid #669999;
        }

        article {
            margin-bottom: 40px;
        }

        article p {
            margin-bottom: 15px;
            text-align: justify;
            font-size: 15px;
            line-height: 1.8;
        }

        article h2 {
            color: #669999;
            font-size: 24px;
            margin-top: 25px;
            margin-bottom: 15px;
        }

        article h3 {
            color: #558888;
            font-size: 20px;
            margin-top: 20px;
            margin-bottom: 12px;
        }

        article strong,
        article b {
            color: #558888;
        }

        .transition-section {
            background-color: #f9f9f9;
            padding: 25px;
            border-left: 4px solid #669999;
            margin: 30px 0;
            border-radius: 4px;
        }

        .transition-section p {
            margin-bottom: 12px;
            font-size: 15px;
            line-height: 1.7;
        }

        {% if links %}
        .links-section {
            background: linear-gradient(to bottom, #f0f5f5 0%, #fff 100%);
            padding: 40px;
            border-radius: 8px;
            margin-top: 40px;
            border: 1px solid #e0e0e0;
        }

        .links-section h3 {
            color: #669999;
            font-size: 22px;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #669999;
        }

        .links-section ul {
            list-style: none;
            column-count: 2;
            column-gap: 40px;
            margin-bottom: 30px;
        }

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

        .links-section a {
            color: #558888;
            text-decoration: none;
            display: inline-block;
            padding: 5px 0;
            transition: color 0.3s ease, padding-left 0.3s ease;
        }

        .links-section a:hover {
            color: #669999;
            padding-left: 8px;
        }

        .links-section a::before {
            content: "→ ";
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .links-section a:hover::before {
            opacity: 1;
        }
        {% endif %}

        footer {
            background-color: #558888;
            color: #fff;
            padding: 30px 0;
            margin-top: 50px;
        }

        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            text-align: center;
        }

        .footer-links {
            margin-top: 15px;
        }

        .footer-links a {
            color: #fff;
            text-decoration: none;
            margin: 0 10px;
            opacity: 0.9;
            transition: opacity 0.3s ease;
        }

        .footer-links a:hover {
            opacity: 1;
            text-decoration: underline;
        }

        @media (max-width: 768px) {
            nav ul {
                flex-direction: column;
            }

            nav ul li {
                width: 100%;
            }

            main {
                padding: 25px 20px;
                margin: 20px auto;
            }

            h1 {
                font-size: 26px;
            }

            article h2 {
                font-size: 20px;
            }

            article h3 {
                font-size: 18px;
            }

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

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

        @media (max-width: 480px) {
            .logo {
                font-size: 22px;
            }

            h1 {
                font-size: 22px;
            }

            nav a {
                padding: 8px 10px;
                font-size: 14px;
            }
        }