* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #0a3d62;
            --secondary-color: #1e90ff;
            --accent-color: #ff6b6b;
            --light-color: #f8f9fa;
            --dark-color: #2d3436;
            --gray-color: #636e72;
            --border-color: #dfe6e9;
            --success-color: #00b894;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--dark-color);
            background-color: #fff;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: var(--secondary-color);
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-color);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul, ol {
            list-style-position: inside;
            margin-left: 1rem;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            background: var(--secondary-color);
            color: white;
            border-radius: 6px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-3px);
        }
        .section {
            padding: 60px 0;
        }
        header {
            background-color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            padding: 15px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .header-top .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .logo a {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo a i {
            color: var(--accent-color);
        }
        .logo a:hover {
            color: var(--secondary-color);
        }
        .search-box {
            display: flex;
            max-width: 400px;
            width: 100%;
        }
        .search-box input {
            flex: 1;
            padding: 10px 15px;
            border: 2px solid var(--border-color);
            border-radius: 6px 0 0 6px;
            font-size: 1rem;
        }
        .search-box button {
            padding: 0 20px;
            background: var(--primary-color);
            color: white;
            border: none;
            border-radius: 0 6px 6px 0;
            cursor: pointer;
        }
        nav {
            background-color: var(--primary-color);
        }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: relative;
        }
        .main-nav {
            display: flex;
        }
        .main-nav li {
            list-style: none;
        }
        .main-nav a {
            display: block;
            padding: 18px 20px;
            color: white;
            font-weight: 600;
            position: relative;
        }
        .main-nav a:hover {
            background-color: rgba(255, 255, 255, 0.1);
            color: white;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 3px;
            background: var(--accent-color);
            transition: var(--transition);
            transform: translateX(-50%);
        }
        .main-nav a:hover::after {
            width: 80%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 10px;
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: var(--light-color);
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .breadcrumb li {
            display: inline;
            margin-right: 5px;
        }
        .breadcrumb li:not(:last-child)::after {
            content: ">";
            margin-left: 10px;
            color: var(--gray-color);
        }
        .breadcrumb a {
            color: var(--gray-color);
        }
        .breadcrumb a:hover {
            color: var(--primary-color);
        }
        main {
            min-height: 80vh;
        }
        .article-header {
            padding: 40px 0 20px;
            border-bottom: 2px solid var(--border-color);
            margin-bottom: 40px;
        }
        .article-header h1 {
            font-size: 2.8rem;
            color: var(--primary-color);
            margin-bottom: 15px;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            gap: 20px;
            color: var(--gray-color);
            font-size: 0.95rem;
            margin-bottom: 20px;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .article-content {
            font-size: 1.1rem;
        }
        .article-content h2 {
            font-size: 2rem;
            color: var(--primary-color);
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-color);
        }
        .article-content h3 {
            font-size: 1.6rem;
            color: var(--dark-color);
            margin: 30px 0 15px;
        }
        .article-content p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .article-content strong {
            color: var(--primary-color);
        }
        .article-content em {
            color: var(--accent-color);
            font-style: italic;
        }
        .highlight-box {
            background-color: #e3f2fd;
            border-left: 5px solid var(--secondary-color);
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 8px 8px 0;
        }
        .inline-link {
            font-weight: 700;
            color: var(--primary-color);
            border-bottom: 2px dotted var(--secondary-color);
        }
        .inline-link:hover {
            border-bottom-style: solid;
        }
        .featured-image {
            margin: 30px 0;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .featured-image figcaption {
            padding: 10px;
            background: var(--light-color);
            font-size: 0.9rem;
            color: var(--gray-color);
            text-align: center;
        }
        .groups-table-section {
            margin: 50px 0;
            overflow-x: auto;
        }
        .groups-table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            box-shadow: var(--shadow);
            border-radius: 10px;
            overflow: hidden;
        }
        .groups-table caption {
            caption-side: top;
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-color);
            padding: 20px;
            background: white;
        }
        .groups-table thead {
            background-color: var(--primary-color);
            color: white;
        }
        .groups-table th, .groups-table td {
            padding: 18px 15px;
            text-align: center;
            border: 1px solid var(--border-color);
        }
        .groups-table tbody tr:nth-child(even) {
            background-color: #f8f9fa;
        }
        .groups-table tbody tr:hover {
            background-color: #e3f2fd;
        }
        .group-name {
            font-weight: 800;
            color: var(--primary-color);
            text-align: left !important;
        }
        .team-flag {
            width: 30px;
            height: 20px;
            object-fit: cover;
            border-radius: 2px;
            display: inline-block;
            margin-right: 8px;
            vertical-align: middle;
        }
        .sidebar {
            background-color: var(--light-color);
            padding: 25px;
            border-radius: 12px;
            height: fit-content;
            position: sticky;
            top: 100px;
        }
        .sidebar-widget {
            margin-bottom: 30px;
        }
        .sidebar-widget h3 {
            font-size: 1.4rem;
            color: var(--primary-color);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-color);
        }
        .sidebar-links li {
            list-style: none;
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px dashed var(--border-color);
        }
        .sidebar-links a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--dark-color);
        }
        .sidebar-links a:hover {
            color: var(--secondary-color);
            gap: 15px;
        }
        .sidebar-links i {
            color: var(--accent-color);
        }
        .user-interaction {
            background-color: #f1f8ff;
            padding: 40px;
            border-radius: 12px;
            margin: 50px 0;
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        .interaction-form h3 {
            color: var(--primary-color);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .interaction-form input,
        .interaction-form textarea,
        .interaction-form select {
            width: 100%;
            padding: 12px 15px;
            margin-bottom: 15px;
            border: 2px solid var(--border-color);
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        .interaction-form input:focus,
        .interaction-form textarea:focus,
        .interaction-form select:focus {
            border-color: var(--secondary-color);
            outline: none;
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            margin-bottom: 20px;
        }
        .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: #ffc107;
        }
        .rating-stars input:checked ~ label {
            color: #ffc107;
        }
        .comments-section {
            margin-top: 60px;
        }
        .comment {
            background: white;
            padding: 20px;
            border-radius: 10px;
            margin-bottom: 25px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
            border-left: 4px solid var(--secondary-color);
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 10px;
            font-size: 0.9rem;
            color: var(--gray-color);
        }
        .comment-author {
            font-weight: 700;
            color: var(--primary-color);
        }
        footer {
            background-color: var(--primary-color);
            color: white;
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h3 {
            font-size: 1.3rem;
            margin-bottom: 25px;
            color: white;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 3px;
            background: var(--accent-color);
        }
        .footer-links li {
            list-style: none;
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #ddd;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            margin-top: 30px;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.1);
        }
        friend-link h4 {
            color: white;
            margin-bottom: 20px;
            font-size: 1.2rem;
        }
        .friend-link-list {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
        }
        .friend-link-list a {
            background: rgba(255,255,255,0.1);
            padding: 8px 15px;
            border-radius: 6px;
            color: white;
            font-size: 0.9rem;
        }
        .friend-link-list a:hover {
            background: rgba(255,255,255,0.2);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: var(--primary-color);
                flex-direction: column;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            }
            .main-nav.active {
                display: flex;
            }
            .main-nav a {
                padding: 15px 20px;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            .hamburger {
                display: block;
            }
            .header-top .container {
                flex-direction: column;
                gap: 20px;
            }
            .search-box {
                max-width: 100%;
            }
            .article-header h1 {
                font-size: 2.2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .interaction-grid {
                grid-template-columns: 1fr;
            }
            .groups-table th, .groups-table td {
                padding: 12px 8px;
                font-size: 0.9rem;
            }
        }