* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #FF6B6B;
            --secondary-color: #4ECDC4;
            --accent-color: #FFD166;
            --dark-color: #2D3047;
            --light-color: #F7FFF7;
            --text-color: #333;
            --gray-light: #F1F1F1;
            --gray-medium: #DDD;
            --gray-dark: #666;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
            --border-radius: 8px;
            --container-max-width: 1200px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: var(--light-color);
        }
        .container {
            width: 100%;
            max-width: var(--container-max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: 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 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary-color);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo span {
            color: var(--dark-color);
        }
        .logo:hover {
            color: var(--primary-color);
            transform: scale(1.02);
            transition: var(--transition);
        }
        .desktop-nav {
            display: flex;
            gap: 30px;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
        }
        .nav-link {
            text-decoration: none;
            color: var(--dark-color);
            font-weight: 600;
            padding: 8px 12px;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .nav-link:hover {
            background-color: var(--primary-color);
            color: white;
        }
        .nav-link.active {
            background-color: var(--primary-color);
            color: white;
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: var(--dark-color);
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background-color: white;
            padding: 20px;
            box-shadow: var(--shadow);
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            z-index: 999;
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav .nav-link {
            padding: 12px 0;
            border-bottom: 1px solid var(--gray-medium);
        }
        .mobile-nav .nav-link:last-child {
            border-bottom: none;
        }
        .breadcrumb {
            background-color: var(--gray-light);
            padding: 12px 0;
            margin-bottom: 30px;
        }
        .breadcrumb-list {
            display: flex;
            list-style: none;
            gap: 10px;
            flex-wrap: wrap;
        }
        .breadcrumb-item {
            font-size: 0.9rem;
        }
        .breadcrumb-item a {
            color: var(--dark-color);
            text-decoration: none;
        }
        .breadcrumb-item a:hover {
            color: var(--primary-color);
            text-decoration: underline;
        }
        .breadcrumb-item:not(:last-child)::after {
            content: ">";
            margin-left: 10px;
            color: var(--gray-dark);
        }
        main {
            padding: 40px 0;
        }
        .article-header {
            margin-bottom: 40px;
        }
        .article-title {
            font-size: 2.5rem;
            color: var(--dark-color);
            margin-bottom: 20px;
            line-height: 1.2;
        }
        @media (max-width: 768px) {
            .article-title {
                font-size: 2rem;
            }
        }
        .article-meta {
            display: flex;
            gap: 20px;
            color: var(--gray-dark);
            font-size: 0.9rem;
            margin-bottom: 20px;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .article-image {
            width: 100%;
            height: 400px;
            object-fit: cover;
            border-radius: var(--border-radius);
            margin-bottom: 30px;
            box-shadow: var(--shadow);
        }
        .content-section {
            margin-bottom: 60px;
        }
        .section-title {
            font-size: 1.8rem;
            color: var(--dark-color);
            margin-bottom: 25px;
            padding-bottom: 10px;
            border-bottom: 3px solid var(--secondary-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .section-title i {
            color: var(--primary-color);
        }
        .section-subtitle {
            font-size: 1.4rem;
            color: var(--dark-color);
            margin: 25px 0 15px;
        }
        .content-text {
            font-size: 1.1rem;
            line-height: 1.8;
            margin-bottom: 20px;
            text-align: justify;
        }
        .highlight {
            background-color: var(--accent-color);
            padding: 3px 8px;
            border-radius: 4px;
            font-weight: 600;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .feature-list, .step-list {
            list-style-position: inside;
            margin-left: 20px;
            margin-bottom: 20px;
        }
        .feature-list li, .step-list li {
            margin-bottom: 10px;
            padding-left: 10px;
        }
        .feature-list li::marker, .step-list li::marker {
            color: var(--primary-color);
        }
        .search-section {
            background-color: var(--gray-light);
            padding: 40px;
            border-radius: var(--border-radius);
            margin: 40px 0;
            text-align: center;
        }
        .search-title {
            font-size: 1.5rem;
            margin-bottom: 20px;
            color: var(--dark-color);
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-input {
            flex: 1;
            padding: 15px 20px;
            border: 2px solid var(--gray-medium);
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-input:focus {
            border-color: var(--primary-color);
        }
        .search-btn {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-btn:hover {
            background-color: #ff5252;
        }
        .cta-button {
            display: inline-block;
            background-color: var(--primary-color);
            color: white;
            padding: 15px 30px;
            border-radius: var(--border-radius);
            text-decoration: none;
            font-weight: 700;
            font-size: 1.1rem;
            margin: 20px 0;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .cta-button:hover {
            background-color: #ff5252;
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(255, 107, 107, 0.3);
        }
        .info-box {
            background-color: #e8f4fd;
            border-left: 5px solid var(--secondary-color);
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .warning-box {
            background-color: #fff3e0;
            border-left: 5px solid #ff9800;
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .download-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin: 40px 0;
        }
        .download-card {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 30px;
            box-shadow: var(--shadow);
            text-align: center;
            transition: var(--transition);
        }
        .download-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .download-icon {
            font-size: 3rem;
            color: var(--primary-color);
            margin-bottom: 20px;
        }
        .interaction-section {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 40px;
            margin: 60px 0;
        }
        .interaction-card {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 30px;
            box-shadow: var(--shadow);
        }
        .interaction-title {
            font-size: 1.5rem;
            color: var(--dark-color);
            margin-bottom: 25px;
            text-align: center;
        }
        .rating-stars {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin-bottom: 20px;
        }
        .rating-star {
            font-size: 2rem;
            color: var(--gray-medium);
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-star:hover,
        .rating-star.active {
            color: var(--accent-color);
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--dark-color);
        }
        .form-input,
        .form-textarea {
            width: 100%;
            padding: 12px 15px;
            border: 2px solid var(--gray-medium);
            border-radius: var(--border-radius);
            font-size: 1rem;
            font-family: inherit;
            transition: var(--transition);
        }
        .form-input:focus,
        .form-textarea:focus {
            outline: none;
            border-color: var(--primary-color);
        }
        .form-textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-btn {
            background-color: var(--secondary-color);
            color: white;
            border: none;
            padding: 12px 30px;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            transition: var(--transition);
            width: 100%;
        }
        .submit-btn:hover {
            background-color: #3dbcb4;
        }
        .web-links-section {
            background-color: var(--gray-light);
            padding: 40px 0;
            margin: 40px 0;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
        }
        .web-link {
            background-color: white;
            padding: 15px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .web-link a {
            color: var(--dark-color);
            text-decoration: none;
            font-weight: 500;
            display: block;
            transition: var(--transition);
        }
        .web-link a:hover {
            color: var(--primary-color);
            transform: translateX(5px);
        }
        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 60px 0 30px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            font-size: 1.3rem;
            margin-bottom: 25px;
            color: var(--accent-color);
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary-color);
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 15px;
            }
            .article-image {
                height: 250px;
            }
            .search-form {
                flex-direction: column;
            }
            .search-input {
                border-radius: var(--border-radius);
                margin-bottom: 10px;
            }
            .search-btn {
                border-radius: var(--border-radius);
                padding: 15px;
            }
            .interaction-section {
                grid-template-columns: 1fr;
            }
            .footer-content {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }