* {
            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: #333;
            background-color: #f8f9fa;
            overflow-x: hidden;
        }
        h1, h2, h3, h4 {
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 1rem;
            color: #2c3e50;
        }
        h1 {
            font-size: 2.8rem;
            color: #e74c3c;
            text-shadow: 1px 1px 3px rgba(0,0,0,0.1);
        }
        h2 {
            font-size: 2.2rem;
            border-left: 5px solid #3498db;
            padding-left: 15px;
            margin-top: 2.5rem;
        }
        h3 {
            font-size: 1.8rem;
            color: #2980b9;
            margin-top: 2rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        a {
            color: #3498db;
            text-decoration: none;
            transition: color 0.3s;
        }
        a:hover {
            color: #e74c3c;
        }
        strong {
            color: #c0392b;
            font-weight: 700;
        }
        em {
            font-style: italic;
            color: #27ae60;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 900;
            color: #f1c40f;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: #e74c3c;
        }
        .nav-desktop ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .nav-desktop a {
            color: #ecf0f1;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: all 0.3s;
        }
        .nav-desktop a:hover {
            background-color: rgba(52, 152, 219, 0.8);
            color: white;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background-color: #2c3e50;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: 0 5px 10px rgba(0,0,0,0.2);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: white;
            padding: 0.8rem;
            border-bottom: 1px solid #34495e;
        }
        .nav-mobile a:hover {
            background-color: #3498db;
        }
        .breadcrumb {
            background-color: #ecf0f1;
            padding: 0.8rem 0;
            font-size: 0.95rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin: 0 10px;
            color: #7f8c8d;
        }
        .breadcrumb a {
            color: #3498db;
        }
        main {
            padding: 2rem 0;
            background-color: white;
            box-shadow: 0 0 20px rgba(0,0,0,0.05);
            border-radius: 8px;
            margin: 2rem auto;
        }
        .article-header {
            text-align: center;
            margin-bottom: 3rem;
            padding-bottom: 2rem;
            border-bottom: 3px dashed #f1c40f;
        }
        .article-meta {
            color: #7f8c8d;
            font-size: 0.95rem;
            margin-top: 1rem;
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            flex-wrap: wrap;
        }
        .article-meta i {
            margin-right: 5px;
        }
        .content-section {
            margin-bottom: 3rem;
            padding: 0 2rem;
        }
        .intro-box {
            background: linear-gradient(to right, #e3f2fd, #f3e5f5);
            border-left: 5px solid #9b59b6;
            padding: 2rem;
            border-radius: 8px;
            margin-bottom: 3rem;
        }
        .feature-img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            margin: 2rem 0;
            border: 3px solid #3498db;
        }
        .tip-box {
            background-color: #fffde7;
            border: 2px solid #ffd54f;
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2rem 0;
        }
        .tip-box h4 {
            color: #f57c00;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 2rem 0;
        }
        .strategy-card {
            background: #f8f9fa;
            border-radius: 10px;
            padding: 1.5rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: transform 0.3s, box-shadow 0.3s;
            border-top: 4px solid #2ecc71;
        }
        .strategy-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .hero-tier {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin: 2rem 0;
        }
        .tier-badge {
            background: #34495e;
            color: white;
            padding: 0.5rem 1rem;
            border-radius: 20px;
            font-weight: bold;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .tier-badge.s {
            background: linear-gradient(45deg, #ffd700, #ffed4e);
            color: #333;
        }
        .tier-badge.a {
            background: linear-gradient(45deg, #c0c0c0, #e0e0e0);
            color: #333;
        }
        .interaction-module {
            background-color: #f8f9fa;
            border-radius: 12px;
            padding: 2rem;
            margin: 3rem 0;
            border: 2px solid #dfe6e9;
        }
        .interaction-module h3 {
            color: #2d3436;
            text-align: center;
            margin-bottom: 1.5rem;
        }
        .search-box, .comment-form, .rating-form {
            max-width: 600px;
            margin: 0 auto;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #2c3e50;
        }
        .form-control {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 2px solid #bdc3c7;
            border-radius: 8px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        .form-control:focus {
            border-color: #3498db;
            outline: none;
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
        }
        .btn {
            background: linear-gradient(to right, #3498db, #2980b9);
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 8px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn:hover {
            background: linear-gradient(to right, #2980b9, #1c5a7a);
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(52, 152, 219, 0.3);
        }
        .btn-search {
            background: linear-gradient(to right, #2ecc71, #27ae60);
        }
        .btn-search:hover {
            background: linear-gradient(to right, #27ae60, #219653);
        }
        .star-rating {
            display: flex;
            gap: 5px;
            margin: 1rem 0;
            justify-content: center;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: #f1c40f;
        }
        .web-links-section {
            background: #2c3e50;
            color: white;
            padding: 3rem 0;
            margin-top: 3rem;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
        }
        .web-link {
            background: rgba(255, 255, 255, 0.1);
            padding: 1.2rem;
            border-radius: 8px;
            transition: all 0.3s;
        }
        .web-link:hover {
            background: rgba(52, 152, 219, 0.7);
            transform: translateX(10px);
        }
        .web-link a {
            color: #f1c40f;
            font-weight: 600;
            display: block;
        }
        footer {
            background: #1a252f;
            color: #bdc3c7;
            padding: 3rem 0 1.5rem;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }
        .copyright {
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid #34495e;
            width: 100%;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
            h3 { font-size: 1.6rem; }
            .nav-desktop { display: none; }
            .hamburger { display: block; }
            .content-section { padding: 0 1rem; }
            .strategy-grid { grid-template-columns: 1fr; }
        }
        @media (max-width: 768px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.8rem; }
            .header-container { flex-direction: column; gap: 1rem; }
            .logo a { font-size: 1.8rem; }
            .article-meta { flex-direction: column; gap: 0.5rem; }
            .interaction-module { padding: 1.5rem; }
            .web-links-container { grid-template-columns: 1fr; }
        }
        @media (max-width: 480px) {
            .container { padding: 0 15px; }
            h1 { font-size: 1.8rem; }
            .intro-box, .tip-box { padding: 1rem; }
            .btn { width: 100%; justify-content: center; }
        }
        @media print {
            header, .interaction-module, .web-links-section, footer { display: none; }
            body { background: white; color: black; }
            a { color: black; text-decoration: underline; }
            .container { max-width: 100%; }
        }