:root {
            --primary: #4361ee;
            --primary-dark: #3a56d4;
            --secondary: #7209b7;
            --accent: #f72585;
            --light: #f8f9fa;
            --dark: #212529;
            --gray: #6c757d;
            --gray-light: #e9ecef;
            --success: #4cc9f0;
            --border-radius: 12px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
            --max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            color: var(--dark);
            background-color: #ffffff;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: var(--primary);
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            background: var(--primary);
            color: white;
            border: none;
            border-radius: var(--border-radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
            color: white;
        }
        .btn-accent {
            background: var(--accent);
        }
        .btn-accent:hover {
            background: #e11575;
        }
        header {
            background: white;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--accent);
        }
        .logo a {
            color: inherit;
        }
        .logo a:hover {
            color: var(--secondary);
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        nav a {
            font-weight: 600;
            color: var(--dark);
            padding: 5px 0;
            position: relative;
        }
        nav a:hover {
            color: var(--primary);
        }
        nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width 0.3s;
        }
        nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark);
        }
        .breadcrumb {
            background: var(--gray-light);
            padding: 12px 0;
            font-size: 0.9rem;
            margin-bottom: 30px;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            gap: 10px;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 10px;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        main {
            padding: 40px 0 60px;
        }
        article {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .article-content {
            background: white;
            padding: 30px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-widget {
            background: white;
            padding: 25px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin-bottom: 25px;
        }
        .sidebar-widget h3 {
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--gray-light);
            color: var(--secondary);
        }
        h1, h2, h3, h4 {
            color: var(--dark);
            line-height: 1.3;
            margin-bottom: 20px;
            font-weight: 700;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--secondary);
            margin-bottom: 25px;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary);
            margin-top: 40px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--gray-light);
        }
        h3 {
            font-size: 1.6rem;
            color: var(--secondary);
            margin-top: 30px;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--dark);
            margin-top: 25px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 30px;
        }
        .highlight {
            background: linear-gradient(120deg, #f7258510 0%, #4cc9f010 100%);
            padding: 25px;
            border-radius: var(--border-radius);
            border-left: 4px solid var(--accent);
            margin: 30px 0;
        }
        .stats-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .stat {
            text-align: center;
            padding: 20px;
            background: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .stat-value {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 10px;
        }
        .stat-label {
            color: var(--gray);
            font-weight: 600;
        }
        blockquote {
            font-style: italic;
            padding: 25px;
            background: var(--gray-light);
            border-radius: var(--border-radius);
            border-left: 5px solid var(--success);
            margin: 30px 0;
            font-size: 1.2rem;
        }
        .quote-author {
            text-align: right;
            font-weight: 600;
            color: var(--secondary);
            margin-top: 15px;
        }
        .image-container {
            margin: 35px 0;
            text-align: center;
        }
        .image-container img {
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin: 0 auto 15px;
        }
        .image-caption {
            font-size: 0.95rem;
            color: var(--gray);
            font-style: italic;
        }
        ul, ol {
            margin-bottom: 20px;
            padding-left: 30px;
        }
        li {
            margin-bottom: 10px;
        }
        .feature-list {
            list-style: none;
            padding-left: 0;
        }
        .feature-list li {
            padding-left: 35px;
            position: relative;
            margin-bottom: 15px;
        }
        .feature-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--success);
            font-weight: bold;
            font-size: 1.2rem;
        }
        .keyword-link {
            background: var(--gray-light);
            padding: 3px 8px;
            border-radius: 6px;
            font-weight: 600;
        }
        .keyword-link:hover {
            background: var(--primary);
            color: white;
        }
        .search-form {
            display: flex;
            margin-bottom: 30px;
        }
        .search-input {
            flex-grow: 1;
            padding: 15px;
            border: 2px solid var(--gray-light);
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-input:focus {
            outline: none;
            border-color: var(--primary);
        }
        .search-btn {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-btn:hover {
            background: var(--primary-dark);
        }
        .comment-form, .rating-form {
            background: white;
            padding: 30px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin-top: 40px;
        }
        .form-group {
            margin-bottom: 25px;
        }
        .form-label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--dark);
        }
        .form-input, .form-textarea {
            width: 100%;
            padding: 15px;
            border: 2px solid var(--gray-light);
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
            font-family: inherit;
        }
        .form-input:focus, .form-textarea:focus {
            outline: none;
            border-color: var(--primary);
        }
        .form-textarea {
            min-height: 150px;
            resize: vertical;
        }
        .rating-stars {
            display: flex;
            gap: 10px;
            font-size: 1.8rem;
            margin-bottom: 15px;
        }
        .rating-stars i {
            color: #ffd700;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-stars i:hover {
            transform: scale(1.2);
        }
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 60px 0 30px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            color: white;
            margin-bottom: 25px;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #b0b7c3;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.05);
            padding: 20px;
            border-radius: var(--border-radius);
            margin-top: 20px;
        }
        friend-link a {
            color: var(--success);
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #b0b7c3;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            article {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            h1 {
                font-size: 2.3rem;
            }
            h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            nav ul {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: white;
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
                gap: 15px;
            }
            nav.active ul {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .form-row {
                grid-template-columns: 1fr;
            }
            .stats-box {
                grid-template-columns: 1fr;
            }
            .header-container {
                padding: 12px 0;
            }
        }
        @media (max-width: 576px) {
            .container {
                padding: 0 15px;
            }
            .article-content {
                padding: 20px;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            .lead {
                font-size: 1.15rem;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .article-content, .sidebar-widget {
            animation: fadeIn 0.6s ease-out;
        }
        .text-center { text-align: center; }
        .text-accent { color: var(--accent); }
        .text-primary { color: var(--primary); }
        .mb-30 { margin-bottom: 30px; }
        .mt-30 { margin-top: 30px; }
        .bold { font-weight: 700; }
        .emoji { font-size: 1.2em; }