:root {
            --primary: #1a6dff;
            --primary-dark: #0051cc;
            --secondary: #ff6b00;
            --dark: #0f172a;
            --light: #f8fafc;
            --gray: #64748b;
            --gray-light: #e2e8f0;
            --success: #10b981;
            --border-radius: 12px;
            --shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            color: #334155;
            background: linear-gradient(135deg, #f0f9ff 0%, #fef2f2 100%);
            min-height: 100vh;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--gray-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }
        .logo {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-decoration: none;
            transition: var(--transition);
        }
        .logo:hover {
            transform: scale(1.05);
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        .nav-link {
            color: var(--dark);
            text-decoration: none;
            font-weight: 600;
            font-size: 1rem;
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(26, 109, 255, 0.05);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 3px;
            background: var(--primary);
            transition: var(--transition);
            transform: translateX(-50%);
        }
        .nav-link:hover::after {
            width: 80%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--dark);
            cursor: pointer;
            padding: 0.5rem;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            gap: 1rem;
            padding: 1rem 0;
            border-top: 1px solid var(--gray-light);
        }
        .nav-mobile.active {
            display: flex;
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .search-container {
            max-width: 600px;
            margin: 2rem auto 3rem;
            padding: 0 1rem;
        }
        .search-form {
            position: relative;
        }
        .search-input {
            width: 100%;
            padding: 1.2rem 1.5rem;
            padding-right: 3.5rem;
            border: 2px solid var(--gray-light);
            border-radius: 50px;
            font-size: 1rem;
            transition: var(--transition);
            background: white;
        }
        .search-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 109, 255, 0.2);
        }
        .search-button {
            position: absolute;
            right: 10px;
            top: 50%;
            transform: translateY(-50%);
            background: var(--primary);
            color: white;
            border: none;
            border-radius: 50%;
            width: 50px;
            height: 50px;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .search-button:hover {
            background: var(--primary-dark);
            transform: translateY(-50%) scale(1.05);
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        .article-content {
            background: white;
            border-radius: var(--border-radius);
            padding: 3rem;
            box-shadow: var(--shadow);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            border-radius: var(--border-radius);
            padding: 1.5rem;
            box-shadow: var(--shadow);
        }
        h1, h2, h3, h4 {
            color: var(--dark);
            line-height: 1.3;
            margin-bottom: 1.2rem;
        }
        h1 {
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        h2 {
            font-size: 2rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid var(--gray-light);
            margin-top: 3rem;
        }
        h3 {
            font-size: 1.5rem;
            color: var(--primary-dark);
            margin-top: 2rem;
        }
        .article-meta {
            display: flex;
            gap: 1.5rem;
            color: var(--gray);
            margin-bottom: 2rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid var(--gray-light);
        }
        .meta-item {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            color: var(--primary-dark);
            font-weight: 600;
            padding: 1.5rem;
            background: rgba(26, 109, 255, 0.05);
            border-left: 4px solid var(--primary);
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            margin: 2rem 0;
        }
        .highlight {
            background: linear-gradient(120deg, rgba(255, 107, 0, 0.1) 0%, rgba(255, 107, 0, 0) 100%);
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            border: 1px solid rgba(255, 107, 0, 0.2);
        }
        .feature-img {
            width: 100%;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .feature-img:hover {
            transform: translateY(-5px);
        }
        .cta-button {
            display: inline-block;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            color: white;
            padding: 1rem 2rem;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 700;
            font-size: 1.1rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            margin: 1rem 0;
        }
        .cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(26, 109, 255, 0.3);
        }
        .info-box {
            background: rgba(16, 185, 129, 0.05);
            border: 1px solid var(--success);
            border-radius: var(--border-radius);
            padding: 1.5rem;
            margin: 2rem 0;
        }
        .info-box i {
            color: var(--success);
            margin-right: 0.5rem;
        }
        .related-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 1rem;
            margin: 2rem 0;
        }
        .related-link {
            display: block;
            padding: 1rem;
            background: var(--light);
            border-radius: var(--border-radius);
            text-decoration: none;
            color: var(--dark);
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .related-link:hover {
            background: white;
            border-color: var(--primary);
            transform: translateY(-3px);
        }
        .comments-section, .rating-section {
            background: white;
            border-radius: var(--border-radius);
            padding: 2rem;
            margin-top: 3rem;
            box-shadow: var(--shadow);
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            font-size: 1.5rem;
            color: var(--gray-light);
            cursor: pointer;
            transition: var(--transition);
        }
        .star.active,
        .star:hover {
            color: #ffc107;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .form-input,
        .form-textarea {
            width: 100%;
            padding: 1rem;
            border: 2px solid var(--gray-light);
            border-radius: var(--border-radius);
            font-family: inherit;
            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(26, 109, 255, 0.2);
        }
        .form-textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: var(--border-radius);
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
        }
        .submit-button:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 4rem 0 2rem;
            margin-top: 4rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 3rem;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            background: linear-gradient(90deg, #fff, var(--secondary));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 1rem;
        }
        .footer-heading {
            font-size: 1.2rem;
            margin-bottom: 1.5rem;
            color: white;
        }
        .friend-links {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        friend-link {
            display: block;
        }
        .friend-link {
            color: var(--gray-light);
            text-decoration: none;
            transition: var(--transition);
            padding: 0.3rem 0;
        }
        .friend-link:hover {
            color: white;
            padding-left: 0.5rem;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #334155;
            color: var(--gray);
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
            .sidebar {
                order: -1;
            }
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .article-content {
                padding: 1.5rem;
            }
            .header-container {
                flex-wrap: wrap;
            }
        }
        @media (max-width: 480px) {
            .article-meta {
                flex-direction: column;
                gap: 0.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.8s ease-out forwards;
        }