:root {
            --primary: #2c3e50;
            --secondary: #e74c3c;
            --accent: #3498db;
            --light: #ecf0f1;
            --dark: #1a2530;
            --text: #333;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --radius: 8px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text);
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            min-height: 100vh;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: var(--primary);
            color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo span {
            color: var(--secondary);
        }
        .logo:hover {
            transform: scale(1.02);
            transition: var(--transition);
        }
        .search-form {
            display: flex;
            width: 100%;
            max-width: 400px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 18px;
            border: none;
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
            outline: none;
        }
        .search-form button {
            background: var(--accent);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: #2980b9;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        nav {
            background: var(--dark);
            padding: 10px 0;
        }
        .nav-list {
            display: flex;
            list-style: none;
            justify-content: center;
            gap: 30px;
        }
        .nav-list a {
            color: var(--light);
            text-decoration: none;
            font-weight: 600;
            padding: 8px 15px;
            border-radius: var(--radius);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a:hover, .nav-list a.active {
            background: var(--accent);
            color: white;
            transform: translateY(-2px);
        }
        .breadcrumb {
            padding: 15px 0;
            background: #f8f9fa;
            border-bottom: 1px solid #dee2e6;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--accent);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            padding: 40px 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .article-content {
            background: white;
            padding: 40px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 25px;
            line-height: 1.2;
            border-left: 5px solid var(--secondary);
            padding-left: 20px;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary);
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--accent);
        }
        h3 {
            font-size: 1.5rem;
            color: var(--dark);
            margin: 30px 0 15px;
        }
        p {
            margin-bottom: 25px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight {
            background: #fff9e6;
            padding: 25px;
            border-left: 4px solid #f1c40f;
            margin: 30px 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .highlight strong {
            color: #e67e22;
            font-size: 1.2rem;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 8px;
        }
        .feature-img {
            width: 100%;
            height: auto;
            border-radius: var(--radius);
            margin: 30px 0;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .feature-img:hover {
            transform: scale(1.01);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
            margin: 40px 0;
        }
        .stat-card {
            background: linear-gradient(135deg, var(--primary), var(--dark));
            color: white;
            padding: 25px;
            border-radius: var(--radius);
            text-align: center;
            box-shadow: var(--shadow);
        }
        .stat-card i {
            font-size: 2.5rem;
            margin-bottom: 15px;
            color: var(--accent);
        }
        .strategy-list {
            background: #f8f9fa;
            padding: 30px;
            border-radius: var(--radius);
            margin: 40px 0;
        }
        .strategy-list li {
            margin-bottom: 15px;
            padding-left: 10px;
        }
        blockquote {
            font-style: italic;
            border-left: 4px solid var(--secondary);
            padding-left: 25px;
            margin: 30px 0;
            color: #555;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background: white;
            padding: 25px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            margin-top: 0;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            font-size: 2rem;
            color: #f1c40f;
            margin: 15px 0;
            cursor: pointer;
        }
        .stars i:hover {
            transform: scale(1.2);
            transition: var(--transition);
        }
        .comment-form textarea {
            width: 100%;
            padding: 15px;
            border: 1px solid #ddd;
            border-radius: var(--radius);
            margin-bottom: 15px;
            resize: vertical;
            min-height: 120px;
            font-family: inherit;
        }
        .comment-form button {
            background: var(--accent);
            color: white;
            border: none;
            padding: 12px 30px;
            border-radius: var(--radius);
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .comment-form button:hover {
            background: #2980b9;
            transform: translateY(-2px);
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
            margin: 50px 0 40px;
            padding: 40px;
            background: var(--dark);
            border-radius: var(--radius);
        }
        .web-link {
            background: rgba(255,255,255,0.05);
            padding: 15px;
            border-radius: var(--radius);
            transition: var(--transition);
        }
        .web-link a {
            color: var(--light);
            text-decoration: none;
            font-size: 1rem;
            display: block;
            padding: 10px;
            border-left: 3px solid var(--accent);
        }
        .web-link:hover {
            background: rgba(255,255,255,0.1);
            transform: translateX(5px);
        }
        footer {
            background: var(--primary);
            color: white;
            padding: 40px 0 20px;
            text-align: center;
        }
        .footer-content {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 30px;
            margin-bottom: 30px;
        }
        .copyright {
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            .nav-list {
                gap: 15px;
            }
        }
        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
            }
            .search-form {
                order: 3;
                margin-top: 20px;
                max-width: 100%;
            }
            .hamburger {
                display: block;
            }
            nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                padding: 0;
            }
            .nav-list {
                flex-direction: column;
                gap: 0;
            }
            .nav-list li {
                width: 100%;
            }
            .nav-list a {
                padding: 15px 20px;
                border-radius: 0;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            nav.active {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
            .article-content {
                padding: 25px;
            }
        }
        .btn {
            display: inline-block;
            background: var(--secondary);
            color: white;
            padding: 12px 30px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn:hover {
            background: #c0392b;
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(231, 76, 60, 0.3);
        }
        .tooltip {
            position: relative;
            border-bottom: 1px dashed var(--accent);
            cursor: help;
        }
        .tooltip:hover::after {
            content: attr(data-tooltip);
            position: absolute;
            bottom: 100%;
            left: 50%;
            transform: translateX(-50%);
            background: var(--dark);
            color: white;
            padding: 8px 12px;
            border-radius: var(--radius);
            font-size: 0.9rem;
            white-space: nowrap;
            z-index: 10;
        }
        .fade-in {
            animation: fadeIn 0.8s ease-out;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }