:root {
            --primary: #0d5ba9;
            --secondary: #8a1538;
            --accent: #f0b310;
            --light: #f8f9fa;
            --dark: #212529;
            --gray: #6c757d;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
            --border-radius: 8px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f0f2f5;
            color: #333;
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary), #1a6dc1);
            color: white;
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .logo {
            font-size: 2rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo a {
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--accent);
        }
        .search-box {
            display: flex;
            background: white;
            border-radius: 50px;
            overflow: hidden;
            padding: 5px;
            box-shadow: var(--shadow);
            flex-grow: 1;
            max-width: 400px;
            margin: 0 20px;
        }
        .search-box input {
            border: none;
            padding: 10px 15px;
            flex-grow: 1;
            outline: none;
            font-size: 1rem;
        }
        .search-box button {
            background: var(--secondary);
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 50px;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: #a11b42;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        nav {
            background-color: rgba(255, 255, 255, 0.1);
            margin-top: 1rem;
            border-radius: var(--border-radius);
            backdrop-filter: blur(5px);
        }
        .nav-links {
            display: flex;
            justify-content: center;
            list-style: none;
            flex-wrap: wrap;
        }
        .nav-links li {
            position: relative;
        }
        .nav-links a {
            color: white;
            padding: 15px 20px;
            display: block;
            font-weight: 600;
            border-radius: var(--border-radius);
        }
        .nav-links a:hover {
            background-color: rgba(255, 255, 255, 0.2);
        }
        .nav-links a i {
            margin-right: 8px;
        }
        .breadcrumb {
            padding: 15px 0;
            font-size: 0.9rem;
            color: #ccc;
        }
        .breadcrumb a {
            color: #ddd;
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        main {
            flex: 1;
            padding: 30px 0;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 30px;
        }
        .article-content {
            background: white;
            padding: 30px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .article-content h1 {
            color: var(--primary);
            margin-bottom: 15px;
            font-size: 2.5rem;
            border-bottom: 3px solid var(--accent);
            padding-bottom: 10px;
        }
        .meta-info {
            display: flex;
            gap: 20px;
            color: var(--gray);
            margin-bottom: 25px;
            font-size: 0.9rem;
            flex-wrap: wrap;
        }
        .meta-info span i {
            margin-right: 5px;
        }
        .intro {
            font-size: 1.2rem;
            line-height: 1.8;
            background: #f8f9fa;
            padding: 20px;
            border-left: 5px solid var(--secondary);
            margin-bottom: 30px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        h2 {
            color: var(--secondary);
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px dashed #ddd;
        }
        h3 {
            color: var(--primary);
            margin: 30px 0 15px;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .highlight {
            background-color: #fff8e1;
            padding: 20px;
            border-radius: var(--border-radius);
            border: 1px solid #ffecb3;
            margin: 25px 0;
        }
        .stats-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 15px;
            margin: 25px 0;
        }
        .stat-item {
            background: linear-gradient(to bottom right, #e3f2fd, #bbdefb);
            padding: 15px;
            border-radius: var(--border-radius);
            text-align: center;
            border-left: 5px solid var(--primary);
        }
        .stat-value {
            font-size: 2rem;
            font-weight: bold;
            color: var(--primary);
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--dark);
        }
        .featured-image {
            margin: 30px 0;
            text-align: center;
        }
        .featured-image img {
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            width: 100%;
            max-height: 500px;
            object-fit: cover;
        }
        .image-caption {
            font-style: italic;
            color: var(--gray);
            margin-top: 10px;
            font-size: 0.9rem;
        }
        .table-container {
            overflow-x: auto;
            margin: 25px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            box-shadow: 0 0 10px rgba(0,0,0,0.05);
        }
        th, td {
            padding: 15px;
            text-align: center;
            border-bottom: 1px solid #dee2e6;
        }
        th {
            background-color: var(--primary);
            color: white;
            font-weight: 600;
        }
        tr:nth-child(even) {
            background-color: #f8f9fa;
        }
        tr:hover {
            background-color: #e9ecef;
        }
        .link-list {
            list-style: none;
            margin: 25px 0;
            padding: 20px;
            background: #f8f9fa;
            border-radius: var(--border-radius);
        }
        .link-list li {
            padding: 10px 0;
            border-bottom: 1px dashed #ccc;
        }
        .link-list li:last-child {
            border-bottom: none;
        }
        .link-list a {
            display: block;
            padding: 8px 15px;
            border-radius: 5px;
        }
        .link-list a:hover {
            background-color: #e9ecef;
            padding-left: 20px;
        }
        .user-interaction {
            background: #f8f9fa;
            padding: 30px;
            border-radius: var(--border-radius);
            margin: 40px 0;
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }
        .interaction-form h3 {
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--dark);
        }
        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ced4da;
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 0.2rem rgba(13, 91, 169, 0.25);
            outline: none;
        }
        .star-rating {
            display: flex;
            gap: 5px;
            font-size: 1.8rem;
            margin: 10px 0;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: var(--accent);
        }
        .btn {
            display: inline-block;
            background: var(--primary);
            color: white;
            padding: 12px 25px;
            border: none;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
        }
        .btn:hover {
            background: var(--secondary);
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(0,0,0,0.1);
        }
        .btn-block {
            width: 100%;
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background: white;
            padding: 25px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            margin-top: 0;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--accent);
            margin-bottom: 20px;
        }
        .related-links li {
            padding: 12px 0;
            border-bottom: 1px solid #eee;
        }
        .related-links li:last-child {
            border-bottom: none;
        }
        .related-links a {
            display: flex;
            align-items: center;
        }
        .related-links i {
            margin-right: 10px;
            color: var(--primary);
        }
        .ad-placeholder {
            background: linear-gradient(135deg, #f5f7fa, #c3cfe2);
            height: 300px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--gray);
            border-radius: var(--border-radius);
            font-style: italic;
        }
        footer {
            background: var(--dark);
            color: #ddd;
            padding: 50px 0 20px;
            margin-top: 50px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 15px;
            color: white;
        }
        .footer-links h4 {
            color: white;
            margin-bottom: 20px;
            font-size: 1.2rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #aaa;
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.05);
            padding: 25px;
            border-radius: var(--border-radius);
            margin: 30px 0;
        }
        friend-link h3 {
            color: white;
            margin-bottom: 20px;
        }
        friend-link ul {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            list-style: none;
        }
        friend-link li {
            background: rgba(255,255,255,0.1);
            border-radius: 5px;
            transition: var(--transition);
        }
        friend-link a {
            color: #ddd;
            padding: 10px 20px;
            display: block;
        }
        friend-link li:hover {
            background: rgba(255,255,255,0.2);
            transform: translateY(-3px);
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .search-box {
                order: 3;
                margin-top: 15px;
                max-width: 100%;
            }
        }
        @media (max-width: 768px) {
            .header-top {
                flex-direction: column;
                align-items: flex-start;
            }
            .logo {
                margin-bottom: 15px;
            }
            .mobile-toggle {
                display: block;
                position: absolute;
                top: 20px;
                right: 20px;
            }
            nav {
                display: none;
                margin-top: 15px;
            }
            .nav-active {
                display: block;
            }
            .nav-links {
                flex-direction: column;
            }
            .stats-box {
                grid-template-columns: repeat(2, 1fr);
            }
            h1 {
                font-size: 2rem;
            }
        }
        @media (max-width: 576px) {
            .stats-box {
                grid-template-columns: 1fr;
            }
            .article-content, .sidebar-widget {
                padding: 20px;
            }
            .interaction-grid {
                grid-template-columns: 1fr;
            }
        }