* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #1d428a; 
            --secondary-color: #c8102e; 
            --accent-color: #ffd700; 
            --dark-color: #0c2340;
            --light-color: #f5f5f5;
            --text-color: #333;
            --text-light: #666;
            --border-color: #ddd;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
            --max-width: 1200px;
            --border-radius: 8px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-color);
            background-color: #fff;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary-color);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        h1, h2, h3, h4 {
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 1rem;
            color: var(--dark-color);
        }
        h1 {
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 15px;
        }
        h1:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100px;
            height: 4px;
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            border-radius: 2px;
        }
        h2 {
            font-size: 2.2rem;
            margin-top: 2.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--border-color);
        }
        h3 {
            font-size: 1.8rem;
            margin-top: 2rem;
        }
        h4 {
            font-size: 1.4rem;
            margin-top: 1.5rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 500;
            color: var(--text-light);
            margin-bottom: 2rem;
        }
        .highlight {
            background: linear-gradient(120deg, rgba(255,215,0,0.2) 0%, rgba(255,215,0,0) 100%);
            padding: 0.2rem 0.5rem;
            border-radius: 3px;
        }
        header {
            background-color: var(--dark-color);
            color: white;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo a {
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo-icon {
            color: var(--accent-color);
            font-size: 2rem;
        }
        .logo:hover a {
            color: var(--accent-color);
        }
        .nav-desktop {
            display: flex;
            gap: 30px;
        }
        @media (max-width: 992px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-desktop a {
            color: white;
            font-weight: 600;
            padding: 5px 0;
            position: relative;
        }
        .nav-desktop a:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--accent-color);
            transition: var(--transition);
        }
        .nav-desktop a:hover {
            color: var(--accent-color);
        }
        .nav-desktop a:hover:after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 5px;
        }
        @media (max-width: 992px) {
            .hamburger {
                display: block;
            }
        }
        .nav-mobile {
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background-color: var(--dark-color);
            padding: 20px;
            transform: translateY(-100%);
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            z-index: 999;
        }
        .nav-mobile.active {
            transform: translateY(0);
            opacity: 1;
            visibility: visible;
        }
        .nav-mobile ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .nav-mobile a {
            color: white;
            font-weight: 600;
            font-size: 1.2rem;
            display: block;
            padding: 10px;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .nav-mobile a:hover {
            background-color: rgba(255,255,255,0.1);
            color: var(--accent-color);
            padding-left: 20px;
        }
        .breadcrumb {
            background-color: var(--light-color);
            padding: 15px 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 10px;
        }
        .breadcrumb li:not(:last-child):after {
            content: '/';
            margin-left: 10px;
            color: var(--text-light);
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--primary-color);
        }
        main {
            padding: 40px 0;
            min-height: 80vh;
        }
        .article-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        @media (max-width: 992px) {
            .article-grid {
                grid-template-columns: 1fr;
            }
        }
        .content-section {
            background: white;
            padding: 30px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin-bottom: 30px;
        }
        .featured-image {
            width: 100%;
            height: 400px;
            object-fit: cover;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            border: 5px solid var(--light-color);
        }
        .info-box {
            background-color: #f8f9fa;
            border-left: 5px solid var(--primary-color);
            padding: 20px;
            margin: 2rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .info-box h3 {
            margin-top: 0;
            color: var(--primary-color);
        }
        .interactive-features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
            margin: 3rem 0;
        }
        .feature-card {
            background: white;
            border-radius: var(--border-radius);
            padding: 25px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.15);
            border-color: var(--primary-color);
        }
        .feature-icon {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 15px;
        }
        .feature-card h3 {
            margin-top: 0;
        }
        .feature-card form {
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin-top: 20px;
        }
        .feature-card input,
        .feature-card textarea,
        .feature-card select {
            padding: 12px 15px;
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        .feature-card input:focus,
        .feature-card textarea:focus,
        .feature-card select:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(29, 66, 138, 0.1);
        }
        .feature-card textarea {
            min-height: 120px;
            resize: vertical;
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            margin: 10px 0;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-stars label:hover,
        .rating-stars label:hover ~ label {
            color: #ffd700;
        }
        .rating-stars input:checked ~ label {
            color: #ffd700;
        }
        .btn {
            display: inline-block;
            padding: 12px 30px;
            background-color: var(--primary-color);
            color: white;
            border: none;
            border-radius: var(--border-radius);
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            background-color: var(--secondary-color);
            color: white;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(200, 16, 46, 0.3);
        }
        .btn-secondary {
            background-color: var(--secondary-color);
        }
        .btn-secondary:hover {
            background-color: #a00d24;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            height: fit-content;
        }
        @media (max-width: 992px) {
            .sidebar {
                position: static;
            }
        }
        .sidebar-widget {
            background: white;
            padding: 25px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin-bottom: 25px;
        }
        .sidebar-widget h3 {
            margin-top: 0;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-color);
        }
        .related-links {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px dashed var(--border-color);
        }
        .related-links li:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }
        .related-links a {
            display: block;
            padding: 8px 0;
            color: var(--text-color);
            transition: var(--transition);
        }
        .related-links a:hover {
            color: var(--primary-color);
            padding-left: 10px;
        }
        .related-links a:before {
            content: '→';
            margin-right: 10px;
            color: var(--primary-color);
            transition: var(--transition);
        }
        .related-links a:hover:before {
            margin-right: 15px;
        }
        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 50px 0 20px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            color: white;
            margin-bottom: 20px;
            font-size: 1.5rem;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-section h3:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 3px;
            background-color: var(--accent-color);
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #ccc;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent-color);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            margin: 30px 0;
            padding: 20px;
            background-color: rgba(255,255,255,0.05);
            border-radius: var(--border-radius);
        }
        friend-link h4 {
            color: var(--accent-color);
            margin-bottom: 15px;
        }
        .friend-link-list {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
        }
        .friend-link-list a {
            background-color: rgba(255,255,255,0.1);
            padding: 8px 15px;
            border-radius: 20px;
            color: white;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .friend-link-list a:hover {
            background-color: var(--accent-color);
            color: var(--dark-color);
            transform: translateY(-3px);
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .content-section {
                padding: 20px;
            }
            .featured-image {
                height: 250px;
            }
            .interactive-features {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            .header-container {
                padding: 10px 15px;
            }
            .logo {
                font-size: 1.5rem;
            }
            h1 {
                font-size: 1.8rem;
            }
        }
        .text-center {
            text-align: center;
        }
        .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; }
        .emoji {
            font-size: 1.2em;
            margin: 0 5px;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin: 2rem 0;
        }
        .stat-card {
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            padding: 20px;
            border-radius: var(--border-radius);
            text-align: center;
            border: 1px solid var(--border-color);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary-color);
            line-height: 1;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-top: 5px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }