:root {
            --primary-color: #f97316;
            --secondary-color: #1e3a8a;
            --accent-color: #fbbf24;
            --text-color: #1f2937;
            --light-bg: #fef3c7;
            --dark-bg: #0f172a;
            --white: #ffffff;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --border-radius: 8px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: var(--text-color);
            background-color: #f8fafc;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--secondary-color) 0%, var(--dark-bg) 100%);
            color: var(--white);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }
        .logo-icon {
            color: var(--accent-color);
            font-size: 2.5rem;
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }
        .logo-text {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--white);
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .logo-text span {
            color: var(--accent-color);
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .desktop-nav a {
            color: var(--white);
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .desktop-nav a:hover {
            background-color: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: var(--white);
            border-radius: 2px;
            transition: var(--transition);
        }
        .mobile-nav {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background-color: var(--dark-bg);
            padding: 1rem;
            box-shadow: var(--shadow);
            z-index: 999;
        }
        .mobile-nav.active {
            display: block;
        }
        .mobile-nav ul {
            list-style: none;
        }
        .mobile-nav li {
            margin-bottom: 1rem;
        }
        .mobile-nav a {
            color: var(--white);
            text-decoration: none;
            font-size: 1.2rem;
            padding: 0.5rem;
            display: block;
            border-radius: var(--border-radius);
        }
        .mobile-nav a:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: var(--light-bg);
            margin-bottom: 2rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
        }
        .breadcrumb a {
            color: var(--secondary-color);
            text-decoration: none;
            font-weight: 500;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .separator {
            margin: 0 0.5rem;
            color: var(--primary-color);
        }
        .search-section {
            background-color: var(--white);
            padding: 2rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin-bottom: 3rem;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.8rem 1rem;
            border: 2px solid #e5e7eb;
            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-button {
            background-color: var(--primary-color);
            color: var(--white);
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-button:hover {
            background-color: #ea580c;
        }
        main {
            padding: 2rem 0;
        }
        article {
            background-color: var(--white);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            padding: 3rem;
            margin-bottom: 3rem;
        }
        h1 {
            color: var(--secondary-color);
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            text-align: center;
        }
        h2 {
            color: var(--primary-color);
            font-size: 2.2rem;
            margin: 2.5rem 0 1.5rem;
            border-bottom: 3px solid var(--accent-color);
            padding-bottom: 0.5rem;
        }
        h3 {
            color: var(--secondary-color);
            font-size: 1.8rem;
            margin: 2rem 0 1rem;
        }
        h4 {
            color: var(--text-color);
            font-size: 1.4rem;
            margin: 1.5rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.3rem;
            color: var(--secondary-color);
            font-weight: 600;
            text-align: center;
            margin-bottom: 2.5rem;
            padding: 1.5rem;
            background-color: var(--light-bg);
            border-radius: var(--border-radius);
            border-left: 5px solid var(--primary-color);
        }
        .highlight {
            background-color: var(--light-bg);
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            border-left: 5px solid var(--accent-color);
        }
        .highlight strong {
            color: var(--primary-color);
            font-size: 1.2rem;
        }
        .tip-box {
            background-color: #dbeafe;
            border-left: 5px solid #3b82f6;
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: var(--border-radius);
        }
        .tip-title {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #1e40af;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: linear-gradient(135deg, #fef3c7, #fde68a);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            text-align: center;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-5px);
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary-color);
            line-height: 1;
        }
        .stat-label {
            font-size: 1.2rem;
            color: var(--secondary-color);
            margin-top: 0.5rem;
        }
        .feature-img {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: var(--border-radius);
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
            margin: 2rem auto;
            display: block;
            border: 5px solid var(--white);
            outline: 2px solid var(--accent-color);
        }
        .interactive-section {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        .comment-box, .rating-box {
            background-color: var(--white);
            padding: 2rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--secondary-color);
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem;
            border: 2px solid #e5e7eb;
            border-radius: var(--border-radius);
            font-size: 1rem;
            font-family: inherit;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.2);
        }
        textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-btn {
            background-color: var(--primary-color);
            color: var(--white);
            border: none;
            padding: 1rem 2rem;
            border-radius: var(--border-radius);
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            width: 100%;
        }
        .submit-btn:hover {
            background-color: #ea580c;
            transform: translateY(-2px);
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            font-size: 2.5rem;
            color: #e5e7eb;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: var(--accent-color);
            transform: scale(1.1);
        }
        .web-links {
            background-color: var(--light-bg);
            padding: 3rem 2rem;
            margin: 3rem 0;
            border-radius: var(--border-radius);
        }
        .web-links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
        }
        .web-link {
            background-color: var(--white);
            padding: 1.2rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateX(5px);
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        }
        .web-link a {
            color: var(--secondary-color);
            text-decoration: none;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .web-link a:hover {
            color: var(--primary-color);
            text-decoration: underline;
        }
        footer {
            background-color: var(--dark-bg);
            color: var(--white);
            padding: 3rem 0 1.5rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: var(--accent-color);
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
        }
        .footer-section ul {
            list-style: none;
        }
        .footer-section li {
            margin-bottom: 0.8rem;
        }
        .footer-section a {
            color: #cbd5e1;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-section a:hover {
            color: var(--accent-color);
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #334155;
            color: #94a3b8;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
            h3 { font-size: 1.6rem; }
            article { padding: 2rem; }
        }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .hamburger { display: flex; }
            .header-container { padding: 0 15px; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.8rem; }
            .interactive-section { grid-template-columns: 1fr; }
            .search-form { flex-direction: column; }
            .search-input, .search-button { border-radius: var(--border-radius); width: 100%; }
            .search-button { margin-top: 0.5rem; padding: 0.8rem; }
        }
        @media (max-width: 576px) {
            .container { padding: 0 15px; }
            article { padding: 1.5rem; }
            .logo-text { font-size: 1.5rem; }
            .logo-icon { font-size: 2rem; }
            .breadcrumb ol { font-size: 0.9rem; }
            .feature-img { margin: 1rem 0; }
        }