* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #1e88e5;
            --secondary: #ff9800;
            --accent: #4caf50;
            --dark: #121212;
            --light: #f8f9fa;
            --gray: #6c757d;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ed 100%);
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 15px;
        }
        .header {
            background: linear-gradient(90deg, var(--primary) 0%, #0d47a1 100%);
            color: white;
            padding: 1.5rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--secondary);
        }
        .nav-desktop {
            display: flex;
            gap: 1.8rem;
        }
        @media (max-width: 992px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-link {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 1rem;
            border-radius: 6px;
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover {
            background: rgba(255,255,255,0.15);
            transform: translateY(-2px);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 3px;
            background: var(--secondary);
            transition: var(--transition);
        }
        .nav-link:hover::after {
            width: 80%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 992px) {
            .hamburger {
                display: block;
            }
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            width: 100%;
            background: var(--dark);
            padding: 1rem;
            border-radius: 8px;
            margin-top: 1rem;
            animation: slideDown 0.4s ease;
        }
        @keyframes slideDown {
            from { opacity: 0; transform: translateY(-20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .nav-mobile.active {
            display: flex;
        }
        .breadcrumb {
            padding: 1.2rem 0;
            font-size: 0.95rem;
            color: var(--gray);
            border-bottom: 1px solid #e0e0e0;
            margin-bottom: 2rem;
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .main-container {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin: 2rem 0;
        }
        @media (max-width: 768px) {
            .main-container {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: var(--shadow);
        }
        .article-header {
            margin-bottom: 2.5rem;
            border-bottom: 2px solid var(--accent);
            padding-bottom: 1.5rem;
        }
        .article-title {
            font-size: 2.8rem;
            color: var(--dark);
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            gap: 1.5rem;
            color: var(--gray);
            font-size: 0.95rem;
        }
        .article-meta i {
            margin-right: 6px;
            color: var(--primary);
        }
        .content-section {
            margin-bottom: 3rem;
            padding-bottom: 2rem;
            border-bottom: 1px dashed #e0e0e0;
        }
        h2 {
            color: var(--primary);
            font-size: 2rem;
            margin: 2rem 0 1.5rem;
            padding-left: 15px;
            border-left: 5px solid var(--secondary);
        }
        h3 {
            color: #2c3e50;
            font-size: 1.6rem;
            margin: 1.8rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .highlight {
            background: linear-gradient(120deg, rgba(30, 136, 229, 0.1) 0%, rgba(76, 175, 80, 0.1) 100%);
            padding: 1.8rem;
            border-radius: 10px;
            border-left: 4px solid var(--accent);
            margin: 2rem 0;
        }
        .stat-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-item {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.08);
            text-align: center;
            transition: var(--transition);
            border: 2px solid transparent;
        }
        .stat-item:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
        }
        .stat-value {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 0.5rem;
        }
        .stat-label {
            color: var(--gray);
            font-size: 0.95rem;
        }
        .article-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 12px;
            margin: 2rem auto;
            display: block;
            box-shadow: 0 8px 25px rgba(0,0,0,0.15);
            transition: var(--transition);
        }
        .article-image:hover {
            transform: scale(1.02);
            box-shadow: 0 12px 35px rgba(0,0,0,0.2);
        }
        .internal-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin: 2rem 0;
        }
        .internal-link {
            background: var(--light);
            padding: 0.8rem 1.5rem;
            border-radius: 50px;
            text-decoration: none;
            color: var(--primary);
            font-weight: 600;
            border: 2px solid transparent;
            transition: var(--transition);
        }
        .internal-link:hover {
            background: var(--primary);
            color: white;
            border-color: var(--primary);
            transform: translateY(-3px);
        }
        .sidebar {
            background: white;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: var(--shadow);
            height: fit-content;
            position: sticky;
            top: 120px;
        }
        .sidebar-section {
            margin-bottom: 2.5rem;
        }
        .sidebar-title {
            font-size: 1.4rem;
            color: var(--dark);
            margin-bottom: 1.5rem;
            padding-bottom: 0.8rem;
            border-bottom: 2px solid var(--secondary);
        }
        .search-form {
            display: flex;
            margin-bottom: 1.5rem;
        }
        .search-input {
            flex: 1;
            padding: 0.9rem 1.2rem;
            border: 2px solid #ddd;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-input:focus {
            outline: none;
            border-color: var(--primary);
        }
        .search-btn {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-btn:hover {
            background: #0d47a1;
        }
        .rating-section {
            text-align: center;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1.5rem 0;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #ffc107;
            transform: scale(1.2);
        }
        .rating-form {
            display: none;
            flex-direction: column;
            gap: 1rem;
            margin-top: 1.5rem;
        }
        .rating-form.active {
            display: flex;
        }
        .comment-form textarea,
        .rating-form textarea {
            width: 100%;
            padding: 1rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-family: inherit;
            resize: vertical;
            transition: var(--transition);
        }
        .comment-form textarea:focus,
        .rating-form textarea:focus {
            outline: none;
            border-color: var(--primary);
        }
        .submit-btn {
            background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            align-self: flex-start;
        }
        .submit-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(30, 136, 229, 0.3);
        }
        .footer {
            background: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
            border-radius: 12px 12px 0 0;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 1rem;
            color: var(--secondary);
        }
        .friend-links {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .friend-link {
            color: #ccc;
            text-decoration: none;
            transition: var(--transition);
            padding: 0.5rem 0;
            border-bottom: 1px solid #333;
        }
        .friend-link:hover {
            color: var(--secondary);
            padding-left: 10px;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #333;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .article-title {
                font-size: 2.2rem;
            }
            .article-content {
                padding: 1.5rem;
            }
            .stat-box {
                grid-template-columns: 1fr;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 480px) {
            .article-title {
                font-size: 1.8rem;
            }
            .logo {
                font-size: 1.8rem;
            }
            .article-meta {
                flex-direction: column;
                gap: 0.5rem;
            }
        }