:root {
            --primary-color: #1e3a8a;
            --secondary-color: #dc2626;
            --accent-color: #fbbf24;
            --text-dark: #1f2937;
            --text-light: #6b7280;
            --bg-light: #f9fafb;
            --bg-white: #ffffff;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            color: var(--text-dark);
            background-color: var(--bg-light);
            line-height: 1.6;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--bg-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 0;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-color);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--secondary-color);
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        nav a {
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 600;
            transition: var(--transition);
            padding: 5px 0;
            position: relative;
        }
        nav a:hover {
            color: var(--secondary-color);
        }
        nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--secondary-color);
            transition: var(--transition);
        }
        nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            cursor: pointer;
            font-size: 1.5rem;
            color: var(--primary-color);
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: #edf2f7;
            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(--primary-color);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            padding: 40px 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        article {
            background-color: var(--bg-white);
            padding: 40px;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 20px;
            line-height: 1.2;
        }
        h2 {
            font-size: 1.8rem;
            color: var(--primary-color);
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--accent-color);
        }
        h3 {
            font-size: 1.4rem;
            color: var(--secondary-color);
            margin: 30px 0 15px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .highlight {
            background-color: #fef3c7;
            padding: 25px;
            border-left: 4px solid var(--accent-color);
            margin: 30px 0;
            border-radius: 0 8px 8px 0;
        }
        .highlight p {
            margin-bottom: 0;
        }
        .emoji {
            font-size: 1.2rem;
            margin-right: 5px;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            margin: 25px 0;
            display: block;
            box-shadow: 0 6px 12px rgba(0,0,0,0.1);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--text-light);
            margin-top: -15px;
            margin-bottom: 25px;
        }
        ul, ol {
            margin-left: 25px;
            margin-bottom: 25px;
        }
        li {
            margin-bottom: 10px;
        }
        .interactive-section {
            background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
            color: white;
            padding: 30px;
            border-radius: 10px;
            margin: 40px 0;
        }
        .interactive-section h3 {
            color: white;
            border-bottom: none;
        }
        .search-form, .comment-form, .rating-form {
            background-color: var(--bg-white);
            padding: 25px;
            border-radius: 8px;
            box-shadow: var(--shadow);
            margin-bottom: 30px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }
        input, textarea, select {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #d1d5db;
            border-radius: 6px;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
        }
        button {
            background-color: var(--secondary-color);
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 6px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        button:hover {
            background-color: #b91c1c;
            transform: translateY(-2px);
        }
        .stars {
            display: flex;
            gap: 10px;
            margin-top: 10px;
        }
        .star {
            font-size: 1.8rem;
            color: #d1d5db;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: var(--accent-color);
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background-color: var(--bg-white);
            padding: 25px;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            margin-top: 0;
            border-bottom: 2px solid var(--accent-color);
            padding-bottom: 10px;
        }
        .longtail-links {
            background-color: var(--primary-color);
            padding: 40px 0;
            margin-top: 60px;
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }
        .web-link {
            background-color: rgba(255, 255, 255, 0.1);
            padding: 15px;
            border-radius: 6px;
            transition: var(--transition);
        }
        .web-link:hover {
            background-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
        }
        .web-link a {
            color: white;
            text-decoration: none;
            display: block;
            text-align: center;
            font-weight: 500;
        }
        footer {
            background-color: #111827;
            color: #9ca3af;
            padding: 40px 0 20px;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        .copyright {
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid #374151;
            width: 100%;
            text-align: center;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .web-links {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            nav ul {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 0;
                margin-top: 20px;
            }
            nav ul.active {
                display: flex;
            }
            nav li {
                width: 100%;
                border-bottom: 1px solid #e5e7eb;
            }
            nav a {
                display: block;
                padding: 15px;
            }
            .hamburger {
                display: block;
            }
            article {
                padding: 25px;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            .web-links {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .web-links {
                grid-template-columns: 1fr;
            }
            .interactive-section {
                padding: 20px;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        article, .sidebar-widget {
            animation: fadeIn 0.8s ease-out;
        }
        .schema-markup {
            display: none;
        }