:root {
            --primary-color: #3498db;
            --secondary-color: #2c3e50;
            --accent-color: #e74c3c;
            --light-color: #ecf0f1;
            --dark-color: #2c3e50;
            --text-color: #333;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-color);
            background-color: #f8f9fa;
            direction: ltr;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--secondary-color), #1a252f);
            color: white;
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: 800;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--primary-color);
        }
        .logo span {
            color: var(--primary-color);
        }
        .desktop-nav {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
        }
        .desktop-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        .desktop-nav a:hover {
            background-color: var(--primary-color);
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background-color: var(--secondary-color);
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            padding: 1rem;
            box-shadow: var(--shadow);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            color: white;
            text-decoration: none;
            padding: 0.8rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .mobile-nav a:hover {
            background-color: var(--primary-color);
        }
        .breadcrumb {
            background-color: var(--light-color);
            padding: 0.8rem 0;
            margin-bottom: 2rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            gap: 0.5rem;
        }
        .breadcrumb a {
            color: var(--secondary-color);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            padding: 2rem 0;
        }
        article {
            background-color: white;
            border-radius: 8px;
            box-shadow: var(--shadow);
            padding: 2.5rem;
            margin-bottom: 2rem;
        }
        h1 {
            color: var(--secondary-color);
            font-size: 2.5rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid var(--primary-color);
            padding-bottom: 0.5rem;
        }
        h2 {
            color: var(--secondary-color);
            font-size: 1.8rem;
            margin: 2rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--light-color);
        }
        h3 {
            color: var(--secondary-color);
            font-size: 1.4rem;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .highlight {
            background-color: #fffacd;
            padding: 1.5rem;
            border-left: 4px solid var(--accent-color);
            margin: 1.5rem 0;
            border-radius: 0 4px 4px 0;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            margin: 1.5rem 0;
            box-shadow: var(--shadow);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: -1rem;
            margin-bottom: 1.5rem;
        }
        .search-section {
            background-color: var(--light-color);
            padding: 2rem;
            border-radius: 8px;
            margin: 2rem 0;
            text-align: center;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 1rem auto 0;
        }
        .search-input {
            flex: 1;
            padding: 0.8rem 1rem;
            border: 2px solid var(--primary-color);
            border-radius: 4px 0 0 4px;
            font-size: 1rem;
        }
        .search-btn {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-btn:hover {
            background-color: #2980b9;
        }
        .rating-section, .comments-section {
            background-color: #f8f9fa;
            padding: 2rem;
            border-radius: 8px;
            margin: 2rem 0;
            border: 1px solid #dee2e6;
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            max-width: 600px;
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            margin: 0.5rem 0;
        }
        .star-rating i {
            color: #ddd;
            cursor: pointer;
            font-size: 1.5rem;
            transition: var(--transition);
        }
        .star-rating i:hover,
        .star-rating i.active {
            color: #f39c12;
        }
        textarea, input[type="text"], input[type="email"] {
            padding: 0.8rem;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-family: inherit;
            font-size: 1rem;
        }
        textarea {
            min-height: 120px;
            resize: vertical;
        }
        .submit-btn {
            background-color: var(--accent-color);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            align-self: flex-start;
        }
        .submit-btn:hover {
            background-color: #c0392b;
        }
        .web-links {
            background-color: var(--secondary-color);
            padding: 2rem 0;
            margin-top: 3rem;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
        }
        .web-link {
            background-color: rgba(255, 255, 255, 0.1);
            padding: 1rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        .web-link:hover {
            background-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
        }
        .web-link a {
            color: white;
            text-decoration: none;
            display: block;
        }
        .web-link a:hover {
            text-decoration: underline;
        }
        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 2rem 0;
            text-align: center;
        }
        .footer-content {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1rem;
        }
        .footer-links {
            display: flex;
            gap: 1.5rem;
            flex-wrap: wrap;
            justify-content: center;
        }
        .footer-links a {
            color: var(--light-color);
            text-decoration: none;
        }
        .footer-links a:hover {
            text-decoration: underline;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            article {
                padding: 1.5rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-input {
                border-radius: 4px;
                margin-bottom: 0.5rem;
            }
            .search-btn {
                border-radius: 4px;
            }
        }
        .text-center {
            text-align: center;
        }
        .text-bold {
            font-weight: 700;
        }
        .text-primary {
            color: var(--primary-color);
        }
        .text-accent {
            color: var(--accent-color);
        }
        .mt-1 { margin-top: 1rem; }
        .mt-2 { margin-top: 2rem; }
        .mt-3 { margin-top: 3rem; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .mb-3 { margin-bottom: 3rem; }
        .hero-features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .feature-card {
            background-color: var(--light-color);
            padding: 1.5rem;
            border-radius: 8px;
            text-align: center;
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        .feature-card i {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
        }
        .tier-list {
            background-color: #f0f8ff;
            border-radius: 8px;
            padding: 1.5rem;
            margin: 2rem 0;
        }
        .tier-list table {
            width: 100%;
            border-collapse: collapse;
            margin: 1rem 0;
        }
        .tier-list th, .tier-list td {
            padding: 0.8rem;
            text-align: left;
            border-bottom: 1px solid #ddd;
        }
        .tier-list th {
            background-color: var(--primary-color);
            color: white;
        }
        .tier-list tr:hover {
            background-color: rgba(52, 152, 219, 0.1);
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.5s ease-out;
        }
        @media print {
            .search-section, .rating-section, .comments-section, .web-links, .mobile-menu-btn {
                display: none;
            }
        }