:root {
            --primary: #1a237e;
            --secondary: #ff9800;
            --accent: #4caf50;
            --light: #f5f7fa;
            --dark: #212121;
            --gray: #757575;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --radius: 8px;
            --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);
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }
        header {
            background: linear-gradient(135deg, var(--primary) 0%, #283593 100%);
            color: white;
            padding: 1rem 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 a {
            font-size: 1.8rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--secondary);
        }
        .logo span {
            background: linear-gradient(to right, #ff9800, #ffeb3b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .desktop-nav a {
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .desktop-nav a:hover {
            color: var(--secondary);
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--secondary);
            transition: width 0.3s;
        }
        .desktop-nav a:hover::after {
            width: 100%;
        }
        .mobile-toggle {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            width: 100%;
            background: var(--primary);
            padding: 1rem 0;
        }
        .mobile-nav.active {
            display: block;
        }
        .mobile-nav ul {
            list-style: none;
        }
        .mobile-nav li {
            padding: 0.8rem 0;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .mobile-nav a {
            display: block;
            padding-left: 1rem;
        }
        .breadcrumb {
            background: #e8eaf6;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--primary);
            text-decoration: underline;
        }
        .search-bar {
            max-width: 600px;
            margin: 2rem auto;
            padding: 0 1rem;
        }
        .search-form {
            display: flex;
            box-shadow: var(--shadow);
            border-radius: 50px;
            overflow: hidden;
        }
        .search-form input {
            flex: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1rem;
            outline: none;
        }
        .search-form button {
            background: var(--secondary);
            color: white;
            border: none;
            padding: 0 1.8rem;
            cursor: pointer;
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: #e68900;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: white;
            border-radius: var(--radius);
            padding: 2.5rem;
            box-shadow: var(--shadow);
        }
        article h1 {
            color: var(--primary);
            font-size: 2.5rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        article .meta {
            color: var(--gray);
            font-style: italic;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid #eee;
        }
        article h2 {
            color: var(--primary);
            font-size: 1.8rem;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--secondary);
        }
        article h3 {
            color: #333;
            font-size: 1.4rem;
            margin: 2rem 0 1rem;
        }
        article p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        article emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        article strong {
            color: var(--primary);
        }
        .feature-img {
            width: 100%;
            height: auto;
            border-radius: var(--radius);
            margin: 2rem 0;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        }
        .highlight-box {
            background: #e3f2fd;
            border-left: 5px solid var(--primary);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .group-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            box-shadow: 0 0 10px rgba(0,0,0,0.05);
        }
        .group-table th, .group-table td {
            border: 1px solid #ddd;
            padding: 1rem;
            text-align: center;
        }
        .group-table th {
            background: var(--primary);
            color: white;
            font-weight: 600;
        }
        .group-table tr:nth-child(even) {
            background: #f9f9f9;
        }
        .group-table tr:hover {
            background: #e8f4ff;
        }
        .internal-links {
            background: #f1f8e9;
            padding: 1.5rem;
            border-radius: var(--radius);
            margin: 2rem 0;
        }
        .internal-links ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
        }
        .internal-links li a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #2e7d32;
            padding: 0.5rem;
            border-radius: 4px;
        }
        .internal-links li a:hover {
            background: #dcedc8;
            transform: translateX(5px);
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .widget {
            background: white;
            padding: 1.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .widget h3 {
            color: var(--primary);
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #ff9800;
        }
        .rating-widget form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 5px;
            font-size: 1.8rem;
            color: #ddd;
            margin: 1rem 0;
        }
        .stars i {
            cursor: pointer;
            transition: var(--transition);
        }
        .stars i:hover,
        .stars i.active {
            color: #ffc107;
        }
        .rating-widget input, .rating-widget textarea {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: 4px;
        }
        .rating-widget button {
            background: var(--accent);
            color: white;
            border: none;
            padding: 0.8rem;
            border-radius: 4px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-widget button:hover {
            background: #3d8b40;
        }
        .comments-section .comment {
            border-bottom: 1px solid #eee;
            padding: 1rem 0;
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            color: var(--gray);
            font-size: 0.9rem;
            margin-bottom: 0.5rem;
        }
        footer {
            background: var(--dark);
            color: #ccc;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 1rem;
            color: white;
        }
        .footer-links h4 {
            color: white;
            margin-bottom: 1rem;
            font-size: 1.2rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.7rem;
        }
        .footer-links a:hover {
            color: var(--secondary);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.05);
            padding: 1.5rem;
            border-radius: var(--radius);
            margin: 1.5rem 0;
        }
        friend-link h4 {
            color: var(--secondary);
            margin-bottom: 1rem;
        }
        friend-link a {
            color: #90caf9;
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #444;
            font-size: 0.9rem;
            color: #999;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            article {
                padding: 1.5rem;
            }
            article h1 {
                font-size: 2rem;
            }
            .header-container {
                padding: 0 1rem;
            }
        }