.nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background-color: #ffffff;
            padding: 12px 20px;
            border-radius: 12px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            margin-bottom: 20px;
            border: 1px solid #e0e0e0;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
        }

        nav ul {
            margin: 0;
            display: flex;
            gap: 24px;
            list-style: none;
        }
        
        nav a {
            text-decoration: none;
            color: #007bff;
            font-weight: 600;
            font-size: 16px;
            padding: 6px 12px;
            border-radius: 6px;
            transition: background 0.2s, color 0.2s;
        }

        nav a:hover {
            background-color: #e7f1ff;
            color: #0056b3;
        }

        @media (max-width: 760px) {
            .nav-container {
                flex-direction: column;
                text-align: center;
                padding: 16px;
                gap: 12px;
            }

            nav ul {
                justify-content: center;
                flex-wrap: wrap;
                gap: 16px;
            }
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            line-height: 1.6;
            color: #333;
            margin: 0;
            padding: 20px;
            background-color: #f4f4f4;
        }
        header {
            text-align: center;
            padding: 20px 0;
            border-bottom: 1px solid #eee;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: white;
            padding: 30px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }
        h1 {
            text-align: center;
            color: #007bff;
            margin-bottom: 30px;
            font-size: 2.2rem;
        }
        h2 {
            color: #0056b3;
            margin-top: 2rem;
            font-size: 1.5rem;
            border-bottom: 1px solid #eee;
            padding-bottom: 8px;
        }
        p, li {
            margin-bottom: 1rem;
            font-size: 1.05rem;
        }
        ul {
            padding-left: 1.5rem;
        }
        .last-updated {
            font-style: italic;
            color: #666;
            text-align: center;
            margin-bottom: 2rem;
        }
        footer {
            text-align: center;
            padding: 20px 0;
            border-top: 1px solid #eee;
            color: #666;
            font-size: 14px;
            margin-top: 40px;
        }

        /* Dark Theme */
        body.dark-theme {
            background-color: #121212;
            color: #e0e0e0;
        }
        .dark-theme .nav-container {
            background-color: #1e1e1e;
            border: 1px solid #333;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
        }
        .dark-theme nav a {
            color: #bbdefb;
        }
        .dark-theme nav a:hover {
            background-color: #333;
            color: #e3f2fd;
        }
        .dark-theme .container {
            background: #1e1e1e;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
        }
        .dark-theme h1 {
            color: #bbdefb;
        }
        .dark-theme h2 {
            color: #90caf9;
            border-bottom: 1px solid #333;
        }
        .dark-theme p, .dark-theme li {
            color: #ccc;
        }
        .dark-theme .last-updated {
            color: #aaa;
        }
        .dark-theme footer {
            border-top: 1px solid #333;
            color: #ccc;
        }

        /* Toggle Switch */
        .toggle-container {
            text-align: center;
            margin: 10px 0;
        }
        .toggle-container label {
            font-size: 16px;
            margin-right: 10px;
            vertical-align: middle;
        }
        .toggle-switch {
            position: relative;
            display: inline-block;
            width: 50px;
            height: 24px;
            vertical-align: middle;
        }
        .toggle-switch input {
            opacity: 0;
            width: 0;
            height: 0;
        }
        .slider {
            position: absolute;
            cursor: pointer;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: #ccc;
            transition: .4s;
            border-radius: 24px;
        }
        .slider:before {
            position: absolute;
            content: "";
            height: 18px;
            width: 18px;
            left: 3px;
            bottom: 3px;
            background-color: white;
            transition: .4s;
            border-radius: 50%;
        }
        input:checked + .slider {
            background-color: #2196F3;
        }
        input:checked + .slider:before {
            transform: translateX(26px);
        }