:root {
            --bg-color: #ffffff;
            --text-color: #333333;
            --primary-color: #1a5276;
            --secondary-color: #2980b9;
            --accent-color: #e74c3c;
            --card-bg: #f8f9fa;
            --border-color: #ddd;
        }

        .dark-mode {
            --bg-color: #121212;
            --text-color: #f5f5f5;
            --primary-color: #3498db;
            --secondary-color: #5dade2;
            --accent-color: #e74c3c;
            --card-bg: #1e1e1e;
            --border-color: #444;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            margin: 0;
            padding: 20px;
            background-color: var(--bg-color);
            color: var(--text-color);
            transition: all 0.3s ease;
        }

        .container {
            max-width: 1000px;
            margin: 0 auto;
            padding: 0 15px;
        }

        h1 {
            color: var(--primary-color);
            text-align: center;
            margin-bottom: 30px;
            font-size: 2.2rem;
            position: relative;
            padding-bottom: 10px;
        }

        h1::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 100px;
            height: 3px;
            background: var(--accent-color);
        }

        h2 {
            color: var(--secondary-color);
            margin-top: 30px;
            font-size: 1.6rem;
            border-left: 4px solid var(--accent-color);
            padding-left: 10px;
        }

        .section {
            background-color: var(--card-bg);
            border-radius: 8px;
            padding: 20px;
            margin-bottom: 30px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            border: 1px solid var(--border-color);
        }

        .post-list {
            list-style-type: none;
            padding: 0;
        }

        .post-list li {
            padding: 10px 15px;
            margin-bottom: 8px;
            background-color: rgba(0, 0, 0, 0.05);
            border-radius: 4px;
            border-left: 3px solid var(--primary-color);
            transition: transform 0.2s;
        }

        .dark-mode .post-list li {
            background-color: rgba(255, 255, 255, 0.05);
        }

        .post-list li:hover {
            transform: translateX(5px);
        }

        .post-list li::before {
            content: "•";
            color: var(--accent-color);
            font-weight: bold;
            display: inline-block;
            width: 1em;
            margin-left: -1em;
        }

        .mode-toggle {
            /* position: fixed;
            top: 20px;
            right: 20px; */
            background: var(--primary-color);
            color: white;
            border: none;
            padding: 8px 15px;
            border-radius: 20px;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 8px;
            z-index: 100;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
        }

        .mode-toggle:hover {
            background: var(--secondary-color);
        }

        .right {
            display: flex;
            justify-content: flex-end;
            margin-bottom: 10px;
        }

        .highlight {
            font-weight: 600;
            color: var(--accent-color);
        }

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

            h2 {
                font-size: 1.4rem;
            }

            .section {
                padding: 15px;
            }

            .mode-toggle {
                /* top: 10px;
                right: 10px; */
                padding: 6px 12px;
                font-size: 0.9rem;
            }
        }

        @media (max-width: 480px) {
            body {
                padding: 15px 0px;
            }

            h1 {
                font-size: 1.5rem;
                margin-bottom: 20px;
            }

            h2 {
                font-size: 1.2rem;
                margin-top: 20px;
            }
        }