:root {
            --primary: #1a5fb4;
            --secondary: #ff6b35;
            --accent: #26a269;
            --dark: #1e1e1e;
            --light: #f8f8f8;
            --gray: #5e5c64;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --border-radius: 12px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--dark);
            background-color: var(--light);
            max-width: 100vw;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        ul {
            list-style: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--border-radius);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            background: linear-gradient(135deg, var(--primary), #2d87e0);
            color: white;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            box-shadow: var(--shadow);
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 18px rgba(26, 95, 180, 0.3);
            background: linear-gradient(135deg, #2d87e0, var(--primary));
        }
        .btn-secondary {
            background: linear-gradient(135deg, var(--secondary), #ff8e5c);
        }
        .btn-secondary:hover {
            background: linear-gradient(135deg, #ff8e5c, var(--secondary));
        }
        .site-header {
            background-color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(to right, var(--primary), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: -1px;
        }
        .logo span {
            color: var(--secondary);
        }
        .desktop-nav ul {
            display: flex;
            gap: 30px;
        }
        .desktop-nav a {
            font-weight: 600;
            font-size: 1.05rem;
            padding: 8px 5px;
            position: relative;
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: var(--secondary);
            transition: width 0.3s ease;
            border-radius: 2px;
        }
        .desktop-nav a:hover::after,
        .desktop-nav a.active::after {
            width: 100%;
        }
        .mobile-toggle {
            display: none;
            font-size: 1.8rem;
            color: var(--primary);
            cursor: pointer;
        }
        .mobile-nav {
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background-color: white;
            box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            padding: 20px;
            transform: translateY(-100%);
            opacity: 0;
            visibility: hidden;
            transition: all 0.4s ease;
            z-index: 999;
        }
        .mobile-nav.active {
            transform: translateY(0);
            opacity: 1;
            visibility: visible;
        }
        .mobile-nav ul {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .mobile-nav a {
            display: block;
            padding: 12px 15px;
            border-radius: var(--border-radius);
            font-weight: 600;
            border-left: 5px solid transparent;
        }
        .mobile-nav a:hover,
        .mobile-nav a.active {
            background-color: #f0f7ff;
            border-left-color: var(--primary);
        }
        .breadcrumb {
            background-color: #f5f5f5;
            padding: 12px 20px;
            font-size: 0.9rem;
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--primary);
            text-decoration: underline;
        }
        .breadcrumb i {
            margin: 0 8px;
            font-size: 0.8rem;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 350px;
            gap: 40px;
            padding: 40px 20px;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-section {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 40px;
            box-shadow: var(--shadow);
            margin-bottom: 30px;
        }
        .article-section h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            margin-bottom: 20px;
            color: var(--dark);
        }
        .article-section h2 {
            font-size: 2rem;
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 3px solid var(--secondary);
            color: var(--primary);
        }
        .article-section h3 {
            font-size: 1.6rem;
            margin: 30px 0 15px;
            color: var(--accent);
        }
        .article-section p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .article-section .highlight {
            background-color: #fff9e6;
            border-left: 5px solid var(--secondary);
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .article-section .highlight p {
            margin-bottom: 0;
            font-weight: 600;
        }
        .feature-img {
            margin: 30px 0;
            box-shadow: 0 10px 25px rgba(0,0,0,0.15);
        }
        .feature-img figcaption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .inline-link {
            color: var(--primary);
            font-weight: 600;
            border-bottom: 2px dotted var(--primary);
        }
        .inline-link:hover {
            color: var(--secondary);
            border-bottom-style: solid;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
            margin: 40px 0;
        }
        .stat-card {
            background: linear-gradient(145deg, #ffffff, #f0f0f0);
            padding: 25px;
            border-radius: var(--border-radius);
            text-align: center;
            box-shadow: var(--shadow);
            border-top: 6px solid var(--primary);
        }
        .stat-card i {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 15px;
        }
        .stat-card h4 {
            font-size: 1.8rem;
            color: var(--dark);
            margin-bottom: 10px;
        }
        .sidebar-widget {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 30px;
            margin-bottom: 30px;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            font-size: 1.5rem;
            margin-bottom: 25px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--accent);
            color: var(--dark);
        }
        .search-form {
            display: flex;
            margin-bottom: 25px;
        }
        .search-form input {
            flex: 1;
            padding: 15px;
            border: 2px solid #ddd;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: #155a9c;
        }
        .related-links li {
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 1px dashed #eee;
        }
        .related-links a {
            display: flex;
            align-items: center;
            font-weight: 500;
        }
        .related-links a:hover {
            color: var(--primary);
        }
        .related-links i {
            color: var(--accent);
            margin-right: 12px;
            font-size: 0.9rem;
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            font-size: 2rem;
            color: #ffc107;
            margin: 15px 0;
            cursor: pointer;
        }
        .stars i {
            margin: 0 3px;
            transition: var(--transition);
        }
        .stars i:hover {
            transform: scale(1.2);
        }
        .comment-form textarea {
            width: 100%;
            padding: 15px;
            border: 2px solid #ddd;
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
            margin-bottom: 15px;
            resize: vertical;
            min-height: 120px;
            transition: var(--transition);
        }
        .comment-form textarea:focus {
            border-color: var(--primary);
            outline: none;
        }
        .site-footer {
            background-color: var(--dark);
            color: #ddd;
            padding: 50px 20px 30px;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 900;
            color: white;
            margin-bottom: 20px;
        }
        .footer-links h4 {
            color: white;
            font-size: 1.3rem;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-links h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 50px;
            height: 3px;
            background-color: var(--secondary);
        }
        .footer-links ul li {
            margin-bottom: 12px;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            margin-top: 10px;
        }
        friend-link a {
            color: var(--accent);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid var(--gray);
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .header-container {
                padding: 12px 20px;
            }
            .article-section {
                padding: 25px;
            }
            .article-section h1 {
                font-size: 2.2rem;
            }
            .article-section h2 {
                font-size: 1.7rem;
            }
            .main-content {
                padding: 25px 15px;
                gap: 25px;
            }
            .sidebar-widget {
                padding: 25px;
            }
        }