* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #FF6B00;
            --primary-dark: #E65100;
            --secondary: #1A237E;
            --accent: #00BCD4;
            --dark: #121212;
            --light: #F5F5F5;
            --gray: #757575;
            --success: #4CAF50;
            --warning: #FF9800;
            --danger: #F44336;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --radius: 8px;
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #333;
            background: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
            background-attachment: fixed;
            min-height: 100vh;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: rgba(18, 18, 18, 0.95);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 2px solid var(--primary);
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .logo:hover {
            color: var(--accent);
            transform: scale(1.05);
        }
        .logo i {
            color: var(--accent);
        }
        .nav-desktop {
            display: flex;
            gap: 30px;
        }
        .nav-desktop a {
            color: var(--light);
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 8px 15px;
            border-radius: var(--radius);
            transition: var(--transition);
            position: relative;
        }
        .nav-desktop a:hover {
            background: var(--primary);
            color: white;
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: var(--transition);
        }
        .nav-desktop a:hover::after {
            width: 80%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--light);
            font-size: 1.8rem;
            cursor: pointer;
            padding: 5px;
        }
        .nav-mobile {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background: rgba(18, 18, 18, 0.98);
            padding: 20px;
            flex-direction: column;
            gap: 15px;
            z-index: 999;
            transform: translateY(-100%);
            opacity: 0;
            transition: var(--transition);
        }
        .nav-mobile.active {
            transform: translateY(0);
            opacity: 1;
        }
        .nav-mobile a {
            color: var(--light);
            text-decoration: none;
            padding: 15px;
            border-radius: var(--radius);
            border-left: 4px solid var(--primary);
            transition: var(--transition);
        }
        .nav-mobile a:hover {
            background: var(--primary);
            padding-left: 25px;
        }
        .breadcrumb {
            background: rgba(255, 255, 255, 0.05);
            padding: 15px 0;
            margin: 20px 0;
            border-radius: var(--radius);
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            gap: 10px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--accent);
            text-decoration: none;
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary);
            text-decoration: underline;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin-left: 10px;
            color: var(--gray);
        }
        main {
            background: rgba(255, 255, 255, 0.97);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 40px;
            margin: 30px 0;
            position: relative;
            overflow: hidden;
        }
        main::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 5px;
            background: linear-gradient(90deg, var(--primary), var(--accent), var(--secondary));
        }
        h1 {
            color: var(--secondary);
            font-size: 2.8rem;
            margin-bottom: 20px;
            line-height: 1.2;
            text-shadow: 1px 1px 3px rgba(0,0,0,0.1);
        }
        h2 {
            color: var(--primary-dark);
            font-size: 2rem;
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 3px solid var(--accent);
        }
        h3 {
            color: var(--secondary);
            font-size: 1.6rem;
            margin: 30px 0 15px;
        }
        h4 {
            color: var(--gray);
            font-size: 1.3rem;
            margin: 25px 0 10px;
        }
        p {
            margin-bottom: 25px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight {
            background: linear-gradient(120deg, rgba(255,107,0,0.1) 0%, rgba(0,188,212,0.1) 100%);
            border-left: 4px solid var(--primary);
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .tip-box {
            background: rgba(76, 175, 80, 0.1);
            border: 2px solid var(--success);
            padding: 20px;
            border-radius: var(--radius);
            margin: 25px 0;
            position: relative;
            padding-left: 60px;
        }
        .tip-box::before {
            content: '💡';
            position: absolute;
            left: 20px;
            top: 20px;
            font-size: 1.8rem;
        }
        .warning-box {
            background: rgba(255, 152, 0, 0.1);
            border: 2px solid var(--warning);
            padding: 20px;
            border-radius: var(--radius);
            margin: 25px 0;
            position: relative;
            padding-left: 60px;
        }
        .warning-box::before {
            content: '⚠️';
            position: absolute;
            left: 20px;
            top: 20px;
            font-size: 1.8rem;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
            margin: 40px 0;
        }
        .feature-card {
            background: white;
            padding: 25px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
            border-top: 4px solid var(--primary);
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 12px 24px rgba(0,0,0,0.15);
        }
        .feature-card i {
            color: var(--primary);
            font-size: 2.5rem;
            margin-bottom: 15px;
        }
        .stats {
            display: flex;
            justify-content: space-around;
            flex-wrap: wrap;
            gap: 20px;
            margin: 40px 0;
            text-align: center;
        }
        .stat-item {
            flex: 1;
            min-width: 200px;
            padding: 20px;
            background: linear-gradient(135deg, var(--secondary), #283593);
            color: white;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--accent);
            display: block;
            line-height: 1;
        }
        .article-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: var(--radius);
            margin: 30px auto;
            display: block;
            box-shadow: 0 8px 25px rgba(0,0,0,0.2);
            border: 3px solid white;
            transition: var(--transition);
        }
        .article-image:hover {
            transform: scale(1.02);
            box-shadow: 0 12px 35px rgba(0,0,0,0.3);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            margin-top: -20px;
            margin-bottom: 30px;
        }
        .search-section {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            padding: 40px;
            border-radius: var(--radius);
            margin: 50px 0;
            color: white;
            text-align: center;
        }
        .search-form {
            max-width: 600px;
            margin: 30px auto 0;
            display: flex;
        }
        .search-input {
            flex: 1;
            padding: 18px 25px;
            border: none;
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1.1rem;
            background: rgba(255,255,255,0.95);
        }
        .search-button {
            background: var(--secondary);
            color: white;
            border: none;
            padding: 0 35px;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-button:hover {
            background: var(--accent);
        }
        .interaction-section {
            margin: 60px 0;
            padding: 40px;
            background: rgba(245, 245, 245, 0.8);
            border-radius: var(--radius);
            border: 1px solid #e0e0e0;
        }
        .rating-system {
            text-align: center;
            margin-bottom: 40px;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin: 20px 0;
            direction: rtl;
        }
        .star {
            font-size: 2.5rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star:hover ~ .star {
            color: var(--warning);
        }
        .star.selected {
            color: var(--warning);
        }
        .comment-form {
            display: grid;
            gap: 20px;
            margin-top: 30px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .form-input, .form-textarea {
            padding: 15px;
            border: 2px solid #ddd;
            border-radius: var(--radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-input:focus, .form-textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255,107,0,0.1);
        }
        .form-textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-button {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white;
            border: none;
            padding: 18px;
            border-radius: var(--radius);
            font-size: 1.2rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            margin-top: 10px;
        }
        .submit-button:hover {
            background: linear-gradient(135deg, var(--primary-dark), #B33A00);
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(255,107,0,0.2);
        }
        .footer-links {
            background: rgba(18, 18, 18, 0.95);
            padding: 40px 0;
            margin-top: 60px;
        }
        .web-link {
            background: rgba(255,255,255,0.05);
            padding: 20px;
            margin: 15px 0;
            border-radius: var(--radius);
            border-left: 4px solid var(--accent);
            transition: var(--transition);
        }
        .web-link:hover {
            background: rgba(255,255,255,0.1);
            transform: translateX(10px);
            border-left-color: var(--primary);
        }
        .web-link a {
            color: var(--light);
            text-decoration: none;
            font-size: 1.1rem;
            display: block;
            padding: 10px;
        }
        .web-link a:hover {
            color: var(--accent);
        }
        footer {
            background: #000;
            color: var(--light);
            padding: 40px 0 20px;
            text-align: center;
        }
        .footer-content {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 40px;
            margin-bottom: 30px;
        }
        .copyright {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            color: var(--gray);
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .header-container {
                flex-direction: column;
                gap: 20px;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 20px;
                right: 20px;
            }
            .nav-mobile {
                display: flex;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            main {
                padding: 25px;
            }
        }
        @media (max-width: 768px) {
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .stats {
                flex-direction: column;
                align-items: center;
            }
            .stat-item {
                width: 100%;
                max-width: 300px;
            }
            .search-form {
                flex-direction: column;
            }
            .search-input, .search-button {
                border-radius: var(--radius);
                width: 100%;
            }
            .search-button {
                margin-top: 10px;
                padding: 15px;
            }
            .footer-content {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 15px;
            }
            main {
                padding: 20px;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .logo {
                font-size: 1.8rem;
            }
            .interaction-section {
                padding: 25px;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.8s ease forwards;
        }
        .delay-1 { animation-delay: 0.2s; }
        .delay-2 { animation-delay: 0.4s; }
        .delay-3 { animation-delay: 0.6s; }
        .text-center { text-align: center; }
        .text-primary { color: var(--primary); }
        .text-accent { color: var(--accent); }
        .bold { font-weight: 800; }
        .italic { font-style: italic; }
        .underline { text-decoration: underline; }
        .mb-20 { margin-bottom: 20px; }
        .mb-30 { margin-bottom: 30px; }
        .mt-40 { margin-top: 40px; }
        .py-20 { padding-top: 20px; padding-bottom: 20px; }
        .px-30 { padding-left: 30px; padding-right: 30px; }