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

        body {
            font-family: Georgia, 'Times New Roman', serif;
            line-height: 1.7;
            color: #333;
            background-color: #f5f5f5;
        }

        header {
            background-color: #2c3e50;
            padding: 1.5rem 0;
            border-bottom: 4px solid #c0392b;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }

        .header-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        .site-title {
            font-size: 2.5rem;
            color: #ecf0f1;
            font-weight: bold;
            text-decoration: none;
            display: inline-block;
            letter-spacing: 1px;
        }

        nav {
            background-color: #34495e;
            border-bottom: 2px solid #c0392b;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }

        .nav-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        nav ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0;
        }

        nav li {
            flex: 0 0 auto;
        }

        nav a {
            display: block;
            padding: 0.9rem 1.2rem;
            color: #ecf0f1;
            text-decoration: none;
            transition: background-color 0.3s, color 0.3s;
            font-size: 0.95rem;
            border-right: 1px solid rgba(236, 240, 241, 0.1);
        }

        nav a:hover {
            background-color: #c0392b;
            color: #fff;
        }

        main {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 1.5rem;
        }

        .content-wrapper {
            background-color: #fff;
            padding: 2.5rem;
            border-radius: 5px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.08);
            margin-bottom: 2rem;
        }

        h1 {
            font-size: 2.2rem;
            color: #2c3e50;
            margin-bottom: 1.5rem;
            padding-bottom: 0.8rem;
            border-bottom: 3px solid #c0392b;
            line-height: 1.3;
        }

        article {
            font-size: 1.1rem;
            margin-bottom: 2rem;
        }

        article p {
            margin-bottom: 1.2rem;
        }

        article b, article strong {
            color: #2c3e50;
        }

        article i, article em {
            font-style: italic;
        }

        .transition-section {
            background-color: #ecf0f1;
            padding: 1.8rem;
            margin-bottom: 2rem;
            border-left: 4px solid #c0392b;
            border-radius: 3px;
        }

        .transition-section p {
            margin-bottom: 1rem;
            font-size: 1.05rem;
        }

        .links-section {
            background-color: #fff;
            padding: 2.5rem;
            border-radius: 5px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.08);
        }

        .links-section h3 {
            font-size: 1.4rem;
            color: #2c3e50;
            margin-top: 1.5rem;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #ecf0f1;
        }

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

        .links-section ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 0.8rem 2rem;
            margin-bottom: 1.5rem;
        }

        .links-section li {
            position: relative;
            padding-left: 1.2rem;
        }

        .links-section li:before {
            content: "▸";
            position: absolute;
            left: 0;
            color: #c0392b;
            font-size: 1rem;
        }

        .links-section a {
            color: #2c3e50;
            text-decoration: none;
            transition: color 0.3s;
            line-height: 1.6;
        }

        .links-section a:hover {
            color: #c0392b;
            text-decoration: underline;
        }

        footer {
            background-color: #2c3e50;
            color: #ecf0f1;
            padding: 1.5rem 0;
            margin-top: 3rem;
            border-top: 4px solid #c0392b;
        }

        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
            text-align: center;
            font-size: 0.95rem;
        }

        @media (max-width: 768px) {
            .site-title {
                font-size: 1.8rem;
            }

            nav ul {
                flex-direction: column;
            }

            nav a {
                border-right: none;
                border-bottom: 1px solid rgba(236, 240, 241, 0.1);
            }

            .content-wrapper {
                padding: 1.5rem;
            }

            h1 {
                font-size: 1.7rem;
            }

            article {
                font-size: 1rem;
            }

            .links-section {
                padding: 1.5rem;
            }

            .links-section ul {
                grid-template-columns: 1fr;
                gap: 0.6rem;
            }
        }

        @media (max-width: 480px) {
            .site-title {
                font-size: 1.5rem;
            }

            h1 {
                font-size: 1.4rem;
            }

            .content-wrapper {
                padding: 1rem;
            }

            .links-section {
                padding: 1rem;
            }

            nav a {
                padding: 0.8rem 1rem;
                font-size: 0.9rem;
            }
        }