* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Nirmala UI', 'Arial', sans-serif;
        }
        :root {
            --primary: #FF9800;
            --secondary: #2196F3;
            --accent: #F44336;
            --dark: #2C3E50;
            --light: #F5F7FA;
            --text: #333333;
            --gray: #95A5A6;
            --success: #4CAF50;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        body {
            background-color: #f8f9fa;
            color: var(--text);
            line-height: 1.7;
        }
        a {
            text-decoration: none;
            color: var(--secondary);
            transition: color 0.3s;
        }
        a:hover {
            color: var(--accent);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--dark) 0%, #1a2530 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo span {
            color: var(--primary);
        }
        .logo i {
            color: var(--accent);
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .desktop-nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .desktop-nav a:hover {
            color: var(--primary);
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--primary);
            transition: width 0.3s;
        }
        .desktop-nav a:hover::after {
            width: 100%;
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: var(--dark);
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: var(--shadow);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav ul {
            list-style: none;
        }
        .mobile-nav li {
            margin: 0.8rem 0;
        }
        .mobile-nav a {
            color: white;
            display: block;
            padding: 0.5rem;
            border-radius: 5px;
        }
        .mobile-nav a:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            background: #e9ecef;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb a {
            color: var(--dark);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            color: var(--gray);
            margin: 0 5px;
        }
        .search-section {
            background: white;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
            margin-bottom: 2rem;
            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(--gray);
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
            outline: none;
        }
        .search-input:focus {
            border-color: var(--secondary);
        }
        .search-btn {
            background: var(--secondary);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.3s;
        }
        .search-btn:hover {
            background: #0d8bf2;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
            margin-bottom: 3rem;
        }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        .sidebar {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 100px;
        }
        h1 {
            color: var(--dark);
            font-size: 2.5rem;
            margin-bottom: 1.5rem;
            line-height: 1.3;
            border-bottom: 3px solid var(--primary);
            padding-bottom: 0.5rem;
        }
        h2 {
            color: var(--dark);
            font-size: 1.8rem;
            margin: 2rem 0 1rem;
            padding-left: 0.5rem;
            border-left: 5px solid var(--secondary);
        }
        h3 {
            color: var(--dark);
            font-size: 1.4rem;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .highlight {
            background: #fff9e6;
            border-left: 4px solid var(--primary);
            padding: 1rem;
            margin: 1.5rem 0;
            border-radius: 0 5px 5px 0;
        }
        .tip-box {
            background: #e8f4fd;
            border: 1px dashed var(--secondary);
            padding: 1rem;
            border-radius: 8px;
            margin: 1.5rem 0;
        }
        .tip-box i {
            color: var(--secondary);
            margin-right: 10px;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: linear-gradient(135deg, var(--light) 0%, #e3e8ed 100%);
            padding: 1.5rem;
            border-radius: 8px;
            text-align: center;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--accent);
            display: block;
            line-height: 1;
        }
        .stat-label {
            color: var(--dark);
            font-weight: 600;
            margin-top: 0.5rem;
        }
        .image-container {
            margin: 2rem 0;
            text-align: center;
        }
        .featured-img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            box-shadow: var(--shadow);
            border: 5px solid white;
        }
        .img-caption {
            font-style: italic;
            color: var(--gray);
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .level-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            box-shadow: 0 0 10px rgba(0,0,0,0.05);
        }
        .level-table th, .level-table td {
            border: 1px solid #ddd;
            padding: 12px 15px;
            text-align: left;
        }
        .level-table th {
            background: var(--dark);
            color: white;
            font-weight: 600;
        }
        .level-table tr:nth-child(even) {
            background: #f9f9f9;
        }
        .level-table tr:hover {
            background: #f1f7ff;
        }
        .bird-icon {
            color: var(--accent);
            margin-right: 5px;
        }
        .sidebar h3 {
            background: var(--dark);
            color: white;
            padding: 0.8rem;
            margin: -1.5rem -1.5rem 1.5rem;
            border-radius: 10px 10px 0 0;
        }
        .sidebar ul {
            list-style: none;
        }
        .sidebar li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px dashed #eee;
        }
        .sidebar a {
            color: var(--text);
            display: flex;
            align-items: center;
        }
        .sidebar a:hover {
            color: var(--secondary);
        }
        .sidebar i {
            margin-right: 10px;
            color: var(--gray);
        }
        .interactive-section {
            background: white;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
            margin-bottom: 2rem;
        }
        .tabs {
            display: flex;
            border-bottom: 2px solid #eee;
            margin-bottom: 1.5rem;
        }
        .tab-btn {
            background: none;
            border: none;
            padding: 0.8rem 1.5rem;
            font-size: 1rem;
            font-weight: 600;
            color: var(--gray);
            cursor: pointer;
            position: relative;
        }
        .tab-btn.active {
            color: var(--secondary);
        }
        .tab-btn.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--secondary);
        }
        .tab-content {
            display: none;
        }
        .tab-content.active {
            display: block;
            animation: fadeIn 0.5s;
        }
        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }
        .rating-section {
            text-align: center;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 5px;
            margin: 1rem 0;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active {
            color: #FFD700;
        }
        .comment-form textarea,
        .score-form select {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ddd;
            border-radius: 5px;
            font-size: 1rem;
            margin-bottom: 1rem;
            resize: vertical;
        }
        .submit-btn {
            background: var(--success);
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s;
        }
        .submit-btn:hover {
            background: #3d9b40;
        }
        .footer-links {
            background: var(--dark);
            padding: 2rem 0;
            margin-top: 3rem;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
        }
        .web-link {
            background: rgba(255, 255, 255, 0.1);
            padding: 1rem;
            border-radius: 5px;
            transition: transform 0.3s, background 0.3s;
        }
        .web-link:hover {
            background: rgba(255, 255, 255, 0.15);
            transform: translateY(-3px);
        }
        .web-link a {
            color: white;
            font-size: 0.95rem;
        }
        .web-link a:hover {
            color: var(--primary);
        }
        .site-footer {
            background: #1a2530;
            color: white;
            padding: 2rem 0;
            text-align: center;
        }
        .footer-logo {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 1rem;
        }
        .footer-logo span {
            color: var(--primary);
        }
        .copyright {
            color: var(--gray);
            font-size: 0.9rem;
            margin-top: 1rem;
            padding-top: 1rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .mobile-menu-btn {
                display: block;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .article-content {
                padding: 1.5rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .search-form {
                flex-direction: column;
            }
            .search-input {
                border-radius: 50px;
                margin-bottom: 10px;
            }
            .search-btn {
                border-radius: 50px;
                padding: 0.8rem;
            }
        }
        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .tabs {
                flex-direction: column;
            }
            .tab-btn {
                border-bottom: 1px solid #eee;
            }
        }