* {
            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;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.3s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul {
            list-style: none;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #2c3e50, #4a6491);
            color: white;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            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: #FFD700;
            letter-spacing: 1px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .logo span {
            color: #00b894;
        }
        .search-form {
            display: flex;
            flex-grow: 0.4;
            max-width: 400px;
        }
        .search-input {
            flex-grow: 1;
            padding: 12px 18px;
            border: none;
            border-radius: 30px 0 0 30px;
            font-size: 1rem;
            outline: none;
        }
        .search-btn {
            background: #00b894;
            color: white;
            border: none;
            border-radius: 0 30px 30px 0;
            padding: 0 25px;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background 0.3s;
        }
        .search-btn:hover {
            background: #00a085;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            background: none;
            border: none;
            color: white;
        }
        nav {
            background-color: #34495e;
            padding: 0;
        }
        .nav-list {
            display: flex;
            justify-content: center;
        }
        .nav-list li {
            position: relative;
        }
        .nav-list a {
            display: block;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1.1rem;
            letter-spacing: 0.5px;
        }
        .nav-list a:hover {
            background-color: #3b5999;
            color: #FFD700;
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: #ecf0f1;
            font-size: 0.95rem;
            color: #7f8c8d;
        }
        .breadcrumb a {
            color: #3498db;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 0;
        }
        .article-content {
            background: white;
            border-radius: 12px;
            padding: 40px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        h1 {
            font-size: 2.8rem;
            color: #2c3e50;
            margin-bottom: 20px;
            line-height: 1.2;
            border-bottom: 3px solid #00b894;
            padding-bottom: 15px;
        }
        h2 {
            font-size: 2rem;
            color: #2980b9;
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px dashed #bdc3c7;
        }
        h3 {
            font-size: 1.5rem;
            color: #16a085;
            margin: 30px 0 15px;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 500;
            color: #2c3e50;
            background: #e8f6f3;
            padding: 20px;
            border-left: 5px solid #00b894;
            border-radius: 5px;
            margin-bottom: 30px;
        }
        .highlight {
            background-color: #fff9c4;
            padding: 5px;
            border-radius: 3px;
            font-weight: 600;
        }
        b, strong {
            color: #e74c3c;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .feature-img {
            width: 100%;
            border-radius: 10px;
            margin: 30px 0;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            border: 5px solid #dfe6e9;
        }
        .internal-link {
            color: #3498db;
            font-weight: 600;
            border-bottom: 1px dotted #3498db;
        }
        .internal-link:hover {
            color: #e74c3c;
            border-bottom-style: solid;
        }
        blockquote {
            background: linear-gradient(to right, #f8f9fa, #e3f2fd);
            border-left: 8px solid #3498db;
            padding: 25px;
            margin: 30px 0;
            font-style: italic;
            font-size: 1.2rem;
            color: #2c3e50;
            border-radius: 0 10px 10px 0;
        }
        .stats-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin: 40px 0;
        }
        .stat-card {
            background: #2c3e50;
            color: white;
            padding: 25px;
            border-radius: 10px;
            text-align: center;
            box-shadow: 0 6px 12px rgba(0,0,0,0.15);
            transition: transform 0.3s;
        }
        .stat-card:hover {
            transform: translateY(-10px);
        }
        .stat-card i {
            font-size: 2.5rem;
            margin-bottom: 15px;
            color: #FFD700;
        }
        .stat-card h4 {
            font-size: 2.2rem;
            margin-bottom: 5px;
        }
        aside {
            background: white;
            border-radius: 12px;
            padding: 30px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 140px;
        }
        .sidebar-widget {
            margin-bottom: 35px;
        }
        .sidebar-widget h3 {
            font-size: 1.4rem;
            color: #2c3e50;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #00b894;
        }
        .popular-links li {
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 1px solid #eee;
        }
        .popular-links a {
            display: flex;
            align-items: center;
            color: #2c3e50;
            font-weight: 500;
        }
        .popular-links a:hover {
            color: #3498db;
        }
        .popular-links i {
            margin-right: 10px;
            color: #00b894;
        }
        .user-interaction {
            background: white;
            border-radius: 12px;
            padding: 40px;
            margin-top: 40px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 30px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #2c3e50;
        }
        .form-control {
            width: 100%;
            padding: 14px;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-control:focus {
            border-color: #3498db;
            outline: none;
        }
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        .submit-btn {
            background: linear-gradient(to right, #00b894, #00a085);
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
        }
        .submit-btn:hover {
            background: linear-gradient(to right, #00a085, #008b74);
            box-shadow: 0 5px 15px rgba(0, 184, 148, 0.4);
        }
        .star-rating {
            direction: rtl;
            display: inline-block;
            font-size: 2rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #ddd;
            cursor: pointer;
            padding: 0 5px;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: #FFD700;
        }
        .footer-links {
            background: #2c3e50;
            padding: 40px 0;
            margin-top: 60px;
        }
        .web-link {
            display: inline-block;
            background: #34495e;
            color: white;
            padding: 12px 24px;
            margin: 0 15px 15px 0;
            border-radius: 30px;
            font-weight: 500;
            transition: all 0.3s;
        }
        .web-link:hover {
            background: #3498db;
            transform: translateY(-3px);
        }
        footer {
            background: #1a252f;
            color: #bdc3c7;
            text-align: center;
            padding: 30px 0;
            font-size: 0.95rem;
        }
        .footer-links-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
            }
            h1 {
                font-size: 2.3rem;
            }
            h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
            }
            .search-form {
                order: 3;
                max-width: 100%;
                margin-top: 15px;
                flex-grow: 1;
            }
            .hamburger {
                display: block;
            }
            nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #34495e;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            }
            .nav-list {
                flex-direction: column;
            }
            .nav-list a {
                padding: 15px 20px;
                border-bottom: 1px solid #4a6491;
            }
            .nav-active {
                display: block;
            }
            .article-content, .user-interaction, aside {
                padding: 25px;
            }
            .stats-box {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 1.9rem;
            }
            .logo {
                font-size: 1.8rem;
            }
            .lead {
                font-size: 1.1rem;
            }
        }