* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #1a237e;
            --secondary: #ff5722;
            --accent: #4caf50;
            --light: #f5f5f7;
            --dark: #121212;
            --gray: #757575;
            --shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: var(--light);
            color: var(--dark);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.3s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            background: linear-gradient(135deg, var(--primary), #283593);
            color: white;
            border-radius: 30px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: var(--shadow);
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(26, 35, 126, 0.3);
            background: linear-gradient(135deg, #283593, var(--primary));
        }
        .btn-accent {
            background: linear-gradient(135deg, var(--secondary), #ff7043);
        }
        .btn-accent:hover {
            background: linear-gradient(135deg, #ff7043, var(--secondary));
        }
        header {
            background-color: white;
            box-shadow: var(--shadow);
            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;
            background: linear-gradient(to right, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .logo a:hover {
            opacity: 0.9;
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .desktop-nav a {
            font-weight: 600;
            padding: 8px 0;
            position: relative;
        }
        .desktop-nav a:hover {
            color: var(--secondary);
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: var(--secondary);
            transition: width 0.3s ease;
        }
        .desktop-nav a:hover::after {
            width: 100%;
        }
        .search-form {
            display: flex;
            align-items: center;
            background: var(--light);
            border-radius: 30px;
            padding: 8px 15px;
            width: 250px;
        }
        .search-form input {
            flex: 1;
            border: none;
            background: transparent;
            outline: none;
            padding: 5px 10px;
        }
        .search-form button {
            background: none;
            border: none;
            color: var(--primary);
            cursor: pointer;
            font-size: 1.1rem;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--primary);
        }
        .mobile-nav {
            position: fixed;
            top: 0;
            right: -100%;
            width: 280px;
            height: 100vh;
            background: white;
            box-shadow: -5px 0 15px rgba(0,0,0,0.1);
            padding: 80px 30px 30px;
            transition: right 0.4s ease;
            z-index: 999;
        }
        .mobile-nav.active {
            right: 0;
        }
        .mobile-nav ul {
            list-style: none;
        }
        .mobile-nav li {
            margin-bottom: 20px;
        }
        .mobile-nav a {
            font-size: 1.2rem;
            font-weight: 600;
            display: block;
            padding: 10px;
            border-radius: 8px;
        }
        .mobile-nav a:hover {
            background-color: var(--light);
            color: var(--secondary);
        }
        .close-menu {
            position: absolute;
            top: 20px;
            right: 25px;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.5);
            z-index: 998;
            opacity: 0;
            visibility: hidden;
            transition: all 0.4s ease;
        }
        .overlay.active {
            opacity: 1;
            visibility: visible;
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: #f0f0f0;
            font-size: 0.9rem;
        }
        .breadcrumb .container {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb i {
            font-size: 0.8rem;
        }
        .hero {
            padding: 60px 0;
            background: linear-gradient(rgba(255,255,255,0.9), rgba(255,255,255,0.8)), url('https://images.unsplash.com/photo-1611605698335-8b1569810432?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover no-repeat;
        }
        .hero-content {
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
        }
        .hero h1 {
            font-size: 3.2rem;
            margin-bottom: 20px;
            color: var(--primary);
            line-height: 1.2;
        }
        .hero p {
            font-size: 1.2rem;
            color: var(--gray);
            margin-bottom: 30px;
        }
        main {
            padding: 40px 0;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 40px;
            border-radius: 15px;
            box-shadow: var(--shadow);
        }
        .article-content h2 {
            font-size: 2.2rem;
            color: var(--primary);
            margin: 30px 0 20px;
            padding-bottom: 10px;
            border-bottom: 3px solid var(--accent);
        }
        .article-content h3 {
            font-size: 1.7rem;
            color: var(--secondary);
            margin: 25px 0 15px;
        }
        .article-content p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .article-content strong {
            color: var(--primary);
            font-weight: 700;
        }
        .article-content emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .highlight-box {
            background: linear-gradient(to right, #e3f2fd, #f3e5f5);
            padding: 25px;
            border-left: 5px solid var(--accent);
            border-radius: 0 10px 10px 0;
            margin: 30px 0;
        }
        .image-container {
            margin: 30px 0;
            text-align: center;
        }
        .image-container img {
            border-radius: 10px;
            box-shadow: var(--shadow);
            margin: 0 auto;
        }
        .image-caption {
            font-style: italic;
            color: var(--gray);
            margin-top: 10px;
            font-size: 0.9rem;
        }
        .interactive-features {
            margin: 50px 0;
            padding: 30px;
            background: #f8f9fa;
            border-radius: 15px;
        }
        .interactive-features h3 {
            text-align: center;
            margin-bottom: 30px;
        }
        .feature-form {
            display: flex;
            flex-direction: column;
            gap: 25px;
            max-width: 600px;
            margin: 0 auto;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        .form-group label {
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--primary);
        }
        .form-group input, .form-group textarea, .form-group select {
            padding: 12px 15px;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        .form-group input:focus, .form-group textarea:focus, .form-group select:focus {
            border-color: var(--primary);
            outline: none;
        }
        .star-rating {
            display: flex;
            gap: 10px;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
        }
        .star-rating .star {
            transition: color 0.2s;
        }
        .star-rating .star:hover,
        .star-rating .star.active {
            color: #ffc107;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background: white;
            padding: 25px;
            border-radius: 15px;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            color: var(--primary);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--light);
        }
        .widget-links {
            list-style: none;
        }
        .widget-links li {
            margin-bottom: 12px;
        }
        .widget-links a {
            display: block;
            padding: 10px 15px;
            background: var(--light);
            border-radius: 8px;
            transition: all 0.3s ease;
        }
        .widget-links a:hover {
            background: var(--primary);
            color: white;
            transform: translateX(5px);
        }
        .popular-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag {
            padding: 8px 15px;
            background: #e3f2fd;
            border-radius: 30px;
            font-size: 0.9rem;
            transition: all 0.3s ease;
        }
        .tag:hover {
            background: var(--primary);
            color: white;
        }
        .longtail-links {
            background: white;
            padding: 40px 0;
            margin-top: 40px;
        }
        .longtail-links .container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
        }
        .web-link {
            padding: 15px;
            background: var(--light);
            border-radius: 8px;
            transition: all 0.3s ease;
        }
        .web-link:hover {
            background: var(--primary);
            color: white;
            transform: translateY(-5px);
        }
        .web-link a {
            display: block;
            font-weight: 600;
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 40px 0 20px;
        }
        .footer-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 30px;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            color: white;
        }
        .social-links {
            display: flex;
            gap: 20px;
            font-size: 1.5rem;
        }
        .social-links a:hover {
            color: var(--secondary);
        }
        .copyright {
            text-align: center;
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid #333;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .desktop-nav, .search-form {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .hero h1 {
                font-size: 2.5rem;
            }
            .article-content {
                padding: 25px;
            }
            .article-content h2 {
                font-size: 1.8rem;
            }
            .article-content h3 {
                font-size: 1.5rem;
            }
            .breadcrumb .container {
                flex-wrap: wrap;
            }
        }