:root {
            --primary: #2ecc71;
            --secondary: #27ae60;
            --accent: #e74c3c;
            --dark: #2c3e50;
            --light: #ecf0f1;
            --gray: #95a5a6;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            min-height: 100vh;
        }
        header {
            background: var(--dark);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .my-logo:hover {
            transform: scale(1.05);
            color: white;
        }
        .my-logo i {
            font-size: 2.5rem;
        }
        .desktop-nav {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
        }
        .desktop-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        .desktop-nav a:hover {
            background: var(--primary);
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
        }
        .mobile-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: var(--dark);
            padding: 1rem;
            flex-direction: column;
            gap: 1rem;
            box-shadow: var(--shadow);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            color: white;
            text-decoration: none;
            padding: 0.8rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            transition: var(--transition);
        }
        .mobile-nav a:hover {
            background: var(--primary);
            padding-left: 1.5rem;
        }
        .breadcrumb {
            background: white;
            padding: 1rem 0;
            border-bottom: 1px solid #eee;
        }
        .breadcrumb ol {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            list-style: none;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .breadcrumb a {
            color: var(--dark);
            text-decoration: none;
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary);
            text-decoration: underline;
        }
        .breadcrumb i {
            color: var(--gray);
            font-size: 0.8rem;
        }
        main {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
        }
        @media (max-width: 1024px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: white;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: var(--shadow);
        }
        h1 {
            color: var(--dark);
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.3;
            border-bottom: 3px solid var(--primary);
            padding-bottom: 1rem;
        }
        h2 {
            color: var(--secondary);
            font-size: 2rem;
            margin: 2.5rem 0 1.5rem;
            padding-top: 1rem;
            border-top: 2px solid #eee;
        }
        h3 {
            color: var(--dark);
            font-size: 1.6rem;
            margin: 2rem 0 1rem;
        }
        h4 {
            color: #555;
            font-size: 1.3rem;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            line-height: 1.9;
        }
        .lead {
            font-size: 1.3rem;
            color: var(--dark);
            background: #f8f9fa;
            padding: 1.5rem;
            border-left: 4px solid var(--primary);
            border-radius: 0 8px 8px 0;
            margin-bottom: 2rem;
        }
        .highlight {
            background: linear-gradient(120deg, #a8edea 0%, #fed6e3 100%);
            padding: 2rem;
            border-radius: 10px;
            margin: 2rem 0;
            border: 1px dashed var(--primary);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: white;
            padding: 1.5rem;
            border-radius: 8px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.08);
            text-align: center;
            border-top: 4px solid var(--primary);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 15px rgba(0,0,0,0.1);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            display: block;
            line-height: 1;
        }
        .stat-label {
            color: var(--dark);
            font-weight: 600;
            margin-top: 0.5rem;
            font-size: 1.1rem;
        }
        .featured-image {
            width: 100%;
            height: auto;
            border-radius: 10px;
            margin: 2rem 0;
            box-shadow: 0 6px 15px rgba(0,0,0,0.15);
            transition: var(--transition);
        }
        .featured-image:hover {
            transform: scale(1.01);
            box-shadow: 0 10px 20px rgba(0,0,0,0.2);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .content-link {
            color: var(--secondary);
            text-decoration: none;
            font-weight: 600;
            border-bottom: 2px dotted transparent;
            transition: var(--transition);
            padding: 0 2px;
        }
        .content-link:hover {
            color: var(--accent);
            border-bottom-color: var(--accent);
            background: #fff9e6;
        }
        .interactive-section {
            background: #f8f9fa;
            border-radius: 10px;
            padding: 2rem;
            margin: 3rem 0;
            border: 2px solid #e9ecef;
        }
        .search-box, .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
            margin-top: 1.5rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        label {
            font-weight: 600;
            color: var(--dark);
        }
        input, textarea, select {
            padding: 0.9rem 1.2rem;
            border: 2px solid #ddd;
            border-radius: 6px;
            font-size: 1rem;
            transition: var(--transition);
            font-family: inherit;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46, 204, 113, 0.2);
        }
        button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 6px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
        }
        button:hover {
            background: var(--secondary);
            transform: translateY(-2px);
            box-shadow: 0 5px 10px rgba(0,0,0,0.1);
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            margin: 0.5rem 0;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-stars label:hover,
        .rating-stars label:hover ~ label {
            color: #ffc107;
        }
        .rating-stars input:checked ~ label {
            color: #ffc107;
        }
        .comments-list {
            margin-top: 2rem;
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .comment {
            background: white;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 4px solid var(--primary);
            box-shadow: 0 3px 8px rgba(0,0,0,0.05);
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 0.8rem;
            font-size: 0.95rem;
            color: var(--gray);
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            border-radius: 10px;
            padding: 1.8rem;
            box-shadow: var(--shadow);
        }
        .widget-title {
            color: var(--dark);
            font-size: 1.4rem;
            margin-bottom: 1.5rem;
            padding-bottom: 0.8rem;
            border-bottom: 2px solid var(--primary);
            display: flex;
            align-items: center;
            gap: 0.7rem;
        }
        .widget-title i {
            color: var(--primary);
        }
        .related-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .related-links a {
            color: #555;
            text-decoration: none;
            padding: 0.8rem;
            border-radius: 6px;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 0.8rem;
            border: 1px solid transparent;
        }
        .related-links a:hover {
            background: #f8f9fa;
            color: var(--primary);
            border-color: #eee;
            transform: translateX(5px);
        }
        .related-links i {
            color: var(--primary);
            width: 1.2rem;
        }
        .update-time {
            background: #fff8e1;
            padding: 1.2rem;
            border-radius: 8px;
            border: 1px solid #ffecb3;
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        .update-time i {
            color: #ff9800;
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-section h3 {
            color: white;
            font-size: 1.4rem;
            margin-bottom: 1.5rem;
            border-bottom: 2px solid var(--primary);
            padding-bottom: 0.7rem;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .footer-links a {
            color: #ddd;
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 0.7rem;
        }
        .footer-links a:hover {
            color: var(--primary);
            padding-left: 0.5rem;
        }
        friend-link {
            display: block;
            margin: 1rem 0;
            padding: 1rem;
            background: rgba(255,255,255,0.1);
            border-radius: 6px;
            transition: var(--transition);
        }
        friend-link:hover {
            background: rgba(255,255,255,0.15);
            transform: translateY(-2px);
        }
        friend-link a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            article {
                padding: 1.5rem;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .header-container {
                flex-wrap: wrap;
            }
            .footer-container {
                grid-template-columns: 1fr;
            }
        }
        @media print {
            .interactive-section,
            .sidebar-widget,
            footer,
            .hamburger,
            .mobile-nav {
                display: none !important;
            }
            main {
                grid-template-columns: 1fr;
            }
            body {
                background: white;
                color: black;
            }
            a {
                color: black;
                text-decoration: underline;
            }
        }