* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-blue: #1a365d;
            --secondary-blue: #2c5282;
            --accent-gold: #d4af37;
            --accent-red: #c53030;
            --light-gray: #f7fafc;
            --dark-gray: #2d3748;
            --text-color: #2d3748;
            --text-light: #718096;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            min-height: 100vh;
        }
        .site-header {
            background: var(--primary-blue);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Times New Roman', serif;
            font-size: 2rem;
            font-weight: bold;
            color: var(--accent-gold);
            text-decoration: none;
            text-transform: uppercase;
            letter-spacing: 2px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover {
            color: white;
            transform: scale(1.05);
            transition: var(--transition);
        }
        .my-logo i {
            font-size: 1.8rem;
        }
        .breadcrumb {
            background: var(--light-gray);
            padding: 10px 20px;
            font-size: 0.9rem;
            border-bottom: 1px solid #e2e8f0;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            max-width: 1200px;
            margin: 0 auto;
        }
        .breadcrumb li {
            margin-right: 5px;
        }
        .breadcrumb a {
            color: var(--secondary-blue);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 5px;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            padding: 5px 10px;
            border-radius: 4px;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .main-nav a:hover {
            background: var(--secondary-blue);
            transform: translateY(-2px);
        }
        .container {
            max-width: 1200px;
            margin: 30px auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .main-content {
            background: white;
            border-radius: 10px;
            padding: 40px;
            box-shadow: var(--shadow);
        }
        .sidebar {
            background: white;
            border-radius: 10px;
            padding: 25px;
            box-shadow: var(--shadow);
            height: fit-content;
            position: sticky;
            top: 100px;
        }
        h1 {
            color: var(--primary-blue);
            font-size: 2.5rem;
            margin-bottom: 20px;
            border-bottom: 3px solid var(--accent-gold);
            padding-bottom: 15px;
        }
        h2 {
            color: var(--secondary-blue);
            font-size: 1.8rem;
            margin: 35px 0 15px;
            padding-left: 10px;
            border-left: 4px solid var(--accent-gold);
        }
        h3 {
            color: var(--dark-gray);
            font-size: 1.4rem;
            margin: 25px 0 10px;
        }
        h4 {
            color: var(--text-color);
            font-size: 1.1rem;
            margin: 20px 0 10px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 500;
            color: var(--secondary-blue);
            background: var(--light-gray);
            padding: 20px;
            border-radius: 8px;
            border-left: 4px solid var(--accent-gold);
            margin: 25px 0;
        }
        .highlight-box {
            background: linear-gradient(135deg, #fff9db 0%, #ffec99 100%);
            border: 2px solid #ffd43b;
            border-radius: 8px;
            padding: 25px;
            margin: 25px 0;
        }
        .warning-box {
            background: linear-gradient(135deg, #ffe3e3 0%, #ffc9c9 100%);
            border: 2px solid #ff6b6b;
            border-radius: 8px;
            padding: 25px;
            margin: 25px 0;
        }
        .pro-tip {
            background: linear-gradient(135deg, #d0ebff 0%, #a5d8ff 100%);
            border: 2px solid #339af0;
            border-radius: 8px;
            padding: 25px;
            margin: 25px 0;
            position: relative;
        }
        .pro-tip::before {
            content: "💡 PRO TIP";
            position: absolute;
            top: -12px;
            left: 20px;
            background: #339af0;
            color: white;
            padding: 5px 15px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: bold;
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 30px 0;
            box-shadow: var(--shadow);
        }
        .comparison-table th {
            background: var(--primary-blue);
            color: white;
            padding: 15px;
            text-align: left;
        }
        .comparison-table td {
            padding: 12px 15px;
            border-bottom: 1px solid #e2e8f0;
        }
        .comparison-table tr:nth-child(even) {
            background: var(--light-gray);
        }
        .comparison-table tr:hover {
            background: #e6f7ff;
        }
        .search-box {
            margin-bottom: 30px;
        }
        .search-box form {
            display: flex;
        }
        .search-box input {
            flex: 1;
            padding: 12px 15px;
            border: 2px solid var(--secondary-blue);
            border-radius: 5px 0 0 5px;
            font-size: 1rem;
        }
        .search-box button {
            background: var(--secondary-blue);
            color: white;
            border: none;
            padding: 0 20px;
            border-radius: 0 5px 5px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: var(--primary-blue);
        }
        .rating-form, .comment-form {
            background: var(--light-gray);
            padding: 25px;
            border-radius: 8px;
            margin: 30px 0;
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            margin: 15px 0;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            font-size: 1.5rem;
            color: #ccc;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-stars label:hover,
        .rating-stars input:checked ~ label {
            color: var(--accent-gold);
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px;
            border: 1px solid #cbd5e0;
            border-radius: 5px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--secondary-blue);
            box-shadow: 0 0 0 3px rgba(44, 82, 130, 0.1);
        }
        .submit-btn {
            background: var(--primary-blue);
            color: white;
            border: none;
            padding: 12px 30px;
            border-radius: 5px;
            font-size: 1rem;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .submit-btn:hover {
            background: var(--secondary-blue);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }
        .featured-image {
            width: 100%;
            height: 400px;
            object-fit: cover;
            border-radius: 10px;
            margin: 25px 0;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .featured-image:hover {
            transform: scale(1.01);
            box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
        }
        .quick-nav {
            margin-bottom: 30px;
        }
        .quick-nav h3 {
            color: var(--primary-blue);
            margin-bottom: 15px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--accent-gold);
        }
        .quick-nav ul {
            list-style: none;
        }
        .quick-nav li {
            margin-bottom: 10px;
        }
        .quick-nav a {
            color: var(--text-color);
            text-decoration: none;
            padding: 8px 12px;
            border-radius: 5px;
            display: block;
            transition: var(--transition);
        }
        .quick-nav a:hover {
            background: var(--light-gray);
            color: var(--secondary-blue);
            padding-left: 20px;
        }
        .update-info {
            background: var(--light-gray);
            padding: 20px;
            border-radius: 8px;
            text-align: center;
            margin-top: 30px;
        }
        .update-info i {
            color: var(--accent-red);
            font-size: 1.5rem;
            margin-bottom: 10px;
        }
        .site-footer {
            background: var(--primary-blue);
            color: white;
            padding: 50px 0 20px;
            margin-top: 50px;
        }
        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
        }
        .footer-section h3 {
            color: var(--accent-gold);
            font-size: 1.3rem;
            margin-bottom: 20px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #cbd5e0;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.1);
            padding: 15px;
            border-radius: 5px;
            margin: 10px 0;
        }
        friend-link a {
            color: var(--accent-gold);
            font-weight: 500;
            text-decoration: none;
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            margin-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .container {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .mobile-menu-btn {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                margin-top: 20px;
            }
            .main-nav.active {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 10px;
            }
            .main-nav a {
                padding: 12px;
                justify-content: center;
            }
            .featured-image {
                height: 300px;
            }
            .footer-content {
                grid-template-columns: 1fr;
                text-align: center;
            }
        }
        @media (max-width: 480px) {
            .main-content {
                padding: 25px 20px;
            }
            .featured-image {
                height: 200px;
            }
            .comparison-table {
                display: block;
                overflow-x: auto;
            }
            .search-box form {
                flex-direction: column;
            }
            .search-box input,
            .search-box button {
                width: 100%;
                border-radius: 5px;
                margin-bottom: 10px;
            }
        }
        .nav-highlight {
            background: rgba(212, 175, 55, 0.1);
            padding: 3px 6px;
            border-radius: 3px;
            font-weight: 600;
        }
        .keyword {
            color: var(--secondary-blue);
            font-weight: 600;
        }
        .credit-value {
            color: #38a169;
            font-weight: bold;
        }
        .warning-text {
            color: var(--accent-red);
            font-weight: 600;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .main-content {
            animation: fadeIn 0.8s ease-out;
        }
        @media print {
            .site-header, .sidebar, .site-footer,
            .search-box, .rating-form, .comment-form {
                display: none;
            }
            .container {
                display: block;
                margin: 0;
                padding: 0;
            }
            .main-content {
                box-shadow: none;
                padding: 0;
            }
        }