* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #2a5caa;
            --secondary: #f8c300;
            --accent: #e63946;
            --dark: #1a365d;
            --light: #f7fafc;
            --gray: #718096;
            --transition: all 0.3s ease;
        }
        body {
            background-color: #f0f4f8;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        ul {
            list-style: none;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            background-color: var(--primary);
            color: white;
            border-radius: 50px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn:hover {
            background-color: var(--dark);
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        header {
            background-color: white;
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
            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;
            color: var(--primary);
            letter-spacing: -1px;
        }
        .logo span {
            color: var(--accent);
        }
        .desktop-nav ul {
            display: flex;
            gap: 30px;
        }
        .desktop-nav a {
            font-weight: 600;
            color: var(--dark);
            padding: 8px 0;
            position: relative;
        }
        .desktop-nav a:hover {
            color: var(--primary);
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: var(--secondary);
            transition: width 0.3s;
        }
        .desktop-nav a:hover::after {
            width: 100%;
        }
        .search-box {
            display: flex;
            background: #f1f5f9;
            border-radius: 50px;
            overflow: hidden;
            padding: 5px;
            width: 300px;
        }
        .search-box input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 10px 20px;
            outline: none;
        }
        .search-box button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 50px;
            cursor: pointer;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--dark);
        }
        .mobile-nav {
            position: fixed;
            top: 0;
            left: -100%;
            width: 80%;
            height: 100vh;
            background-color: white;
            box-shadow: 5px 0 15px rgba(0,0,0,0.1);
            padding: 30px;
            z-index: 1100;
            transition: left 0.5s ease;
        }
        .mobile-nav.active {
            left: 0;
        }
        .mobile-nav ul {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-top: 40px;
        }
        .mobile-nav a {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--dark);
            display: block;
            padding: 10px 0;
            border-bottom: 1px solid #eee;
        }
        .close-menu {
            position: absolute;
            top: 20px;
            right: 20px;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.5);
            z-index: 1050;
            display: none;
        }
        .overlay.active {
            display: block;
        }
        .breadcrumb {
            background-color: #edf2f7;
            padding: 15px 0;
            font-size: 0.95rem;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            padding: 40px 0;
            background-color: white;
            border-radius: 15px;
            box-shadow: 0 5px 25px rgba(0,0,0,0.05);
            margin-top: 20px;
            margin-bottom: 40px;
        }
        .article-header {
            text-align: center;
            padding: 30px 20px;
            border-bottom: 1px solid #e2e8f0;
            margin-bottom: 40px;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--dark);
            margin-bottom: 15px;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: 20px;
            color: var(--gray);
            font-size: 0.95rem;
            margin-top: 15px;
        }
        .article-meta i {
            margin-right: 5px;
        }
        .content {
            padding: 0 30px;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary);
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 3px solid var(--secondary);
        }
        h3 {
            font-size: 1.6rem;
            color: var(--dark);
            margin: 30px 0 15px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight {
            background-color: #fff8e1;
            border-left: 5px solid var(--secondary);
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 10px 10px 0;
        }
        .highlight p {
            margin-bottom: 0;
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            margin: 30px auto;
            border-radius: 10px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        }
        .figure-caption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            margin-top: -20px;
            margin-bottom: 30px;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
            margin: 40px 0;
        }
        .stat-card {
            background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            color: white;
            padding: 25px;
            border-radius: 15px;
            text-align: center;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .stat-card i {
            font-size: 3rem;
            margin-bottom: 15px;
        }
        .stat-card h4 {
            font-size: 2.5rem;
            margin-bottom: 10px;
        }
        .strategy-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .strategy-item {
            background-color: #f8fafc;
            padding: 25px;
            border-radius: 10px;
            border-left: 5px solid var(--primary);
            transition: var(--transition);
        }
        .strategy-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.08);
        }
        .interview {
            background-color: #e8f4fd;
            padding: 30px;
            border-radius: 15px;
            margin: 40px 0;
            border: 1px solid #bde0fe;
        }
        .quote {
            font-size: 1.3rem;
            color: var(--dark);
            font-style: italic;
            text-align: center;
            margin-bottom: 20px;
        }
        .interviewee {
            text-align: right;
            font-weight: 600;
            color: var(--primary);
        }
        .user-interaction {
            margin: 50px 0;
            padding: 40px;
            background-color: #f9f9f9;
            border-radius: 15px;
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        .interaction-card {
            background-color: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .interaction-card h3 {
            margin-top: 0;
            color: var(--primary);
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            margin: 15px 0;
        }
        .rating-stars i {
            color: #ffc107;
            font-size: 1.5rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-stars i:hover {
            transform: scale(1.2);
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--dark);
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #cbd5e0;
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(42, 92, 170, 0.2);
        }
        .footer-links {
            background-color: var(--dark);
            padding: 50px 0 30px;
            color: white;
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 20px;
            margin-bottom: 40px;
        }
        .web-link {
            background-color: rgba(255,255,255,0.05);
            padding: 15px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .web-link:hover {
            background-color: rgba(255,255,255,0.1);
            transform: translateY(-3px);
        }
        .web-link a {
            color: #90cdf4;
        }
        .web-link a:hover {
            color: var(--secondary);
            text-decoration: underline;
        }
        footer {
            background-color: #1a202c;
            color: #a0aec0;
            padding: 30px 0;
            text-align: center;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }
        .social-icons {
            display: flex;
            gap: 15px;
        }
        .social-icons a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background-color: #2d3748;
            border-radius: 50%;
            color: white;
            transition: var(--transition);
        }
        .social-icons a:hover {
            background-color: var(--primary);
            transform: scale(1.1);
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            .search-box { width: 250px; }
        }
        @media (max-width: 768px) {
            .header-top { padding: 12px 0; }
            .desktop-nav, .search-box { display: none; }
            .hamburger { display: block; }
            h1 { font-size: 2rem; }
            .content { padding: 0 15px; }
            .interaction-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 576px) {
            .stats-grid, .strategy-list { grid-template-columns: 1fr; }
            .article-meta { flex-direction: column; gap: 10px; }
            .user-interaction { padding: 30px 20px; }
        }