:root {
            --primary: #2a5c8a;
            --secondary: #e67e22;
            --accent: #1a5276;
            --light: #f8f9fa;
            --dark: #2c3e50;
            --gray: #95a5a6;
            --success: #27ae60;
            --text: #333333;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --radius: 8px;
            --transition: all 0.3s ease;
            font-size: 16px;
        }
        * {
            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: var(--text);
            background-color: #fff;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        header {
            background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: 1px;
            background: linear-gradient(90deg, #fff 0%, #e67e22 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            padding: 5px 0;
        }
        .my-logo:hover {
            transform: scale(1.03);
        }
        .breadcrumb {
            padding: 10px 0;
            background-color: #f1f8ff;
            font-size: 0.9rem;
            color: var(--gray);
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: var(--accent);
        }
        .breadcrumb span {
            color: var(--gray);
        }
        .breadcrumb i {
            margin: 0 8px;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .nav-links a {
            color: white;
            font-weight: 500;
            padding: 5px 0;
            position: relative;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--secondary);
            transition: var(--transition);
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
            padding: 5px;
        }
        .hero {
            background: linear-gradient(rgba(42, 92, 138, 0.85), rgba(26, 82, 118, 0.9)), url('https://images.unsplash.com/photo-1611224923853-80b023f02d71?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 4rem 0;
            text-align: center;
            margin-bottom: 3rem;
            border-radius: var(--radius);
        }
        .hero h1 {
            font-size: 2.8rem;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 1.5rem;
            opacity: 0.9;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        .content-area {
            background: white;
            padding: 2rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .sidebar {
            background: white;
            padding: 1.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        article h1 {
            font-size: 2.5rem;
            color: var(--dark);
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid var(--secondary);
        }
        article h2 {
            font-size: 1.8rem;
            color: var(--primary);
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #eee;
        }
        article h3 {
            font-size: 1.4rem;
            color: var(--accent);
            margin: 2rem 0 1rem;
        }
        article h4 {
            font-size: 1.1rem;
            color: var(--dark);
            margin: 1.5rem 0 0.8rem;
        }
        article p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        article strong {
            color: var(--primary);
            font-weight: 700;
        }
        .highlight-box {
            background-color: #f0f7ff;
            border-left: 4px solid var(--primary);
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .featured-image {
            width: 100%;
            margin: 2rem 0;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .featured-image figcaption {
            text-align: center;
            font-style: italic;
            padding: 10px;
            background-color: #f9f9f9;
            color: var(--gray);
        }
        .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: var(--radius);
            box-shadow: var(--shadow);
            text-align: center;
            border-top: 4px solid var(--secondary);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-5px);
        }
        .stat-card .number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }
        .stat-card .label {
            font-size: 0.9rem;
            color: var(--gray);
            margin-top: 0.5rem;
        }
        .interactive-module {
            background: #f8f9fa;
            border-radius: var(--radius);
            padding: 2rem;
            margin: 3rem 0;
            border: 1px solid #e9ecef;
        }
        .module-title {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--primary);
            margin-bottom: 1.5rem;
        }
        .module-title i {
            font-size: 1.5rem;
        }
        .search-box, .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .search-box input, .comment-form input, .comment-form textarea, .rating-form select {
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: var(--radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-box input:focus, .comment-form input:focus, .comment-form textarea:focus, .rating-form select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(42, 92, 138, 0.1);
        }
        .btn {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: var(--radius);
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        .btn:hover {
            background-color: var(--accent);
            color: white;
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.15);
            text-decoration: none;
        }
        .btn-secondary {
            background-color: var(--secondary);
        }
        .btn-secondary:hover {
            background-color: #d35400;
        }
        .stars {
            display: flex;
            gap: 5px;
            margin: 10px 0;
        }
        .star {
            color: var(--gray);
            cursor: pointer;
            font-size: 1.5rem;
            transition: var(--transition);
        }
        .star:hover, .star.active {
            color: #f1c40f;
        }
        .update-time {
            background-color: #fff8e1;
            padding: 1rem;
            border-radius: var(--radius);
            margin: 2rem 0;
            font-size: 0.9rem;
            color: var(--dark);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .update-time i {
            color: var(--secondary);
        }
        .sidebar h3 {
            color: var(--primary);
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #eee;
        }
        .related-links {
            list-style: none;
            margin-bottom: 2rem;
        }
        .related-links li {
            margin-bottom: 0.8rem;
            padding-left: 1.2rem;
            position: relative;
        }
        .related-links li::before {
            content: '▸';
            position: absolute;
            left: 0;
            color: var(--secondary);
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 1rem;
        }
        .tag {
            background-color: #edf2f7;
            padding: 5px 12px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: var(--dark);
            transition: var(--transition);
        }
        .tag:hover {
            background-color: var(--primary);
            color: white;
        }
        footer {
            background-color: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: var(--secondary);
            margin-bottom: 1.2rem;
            font-size: 1.2rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.7rem;
        }
        .footer-links a {
            color: #ddd;
        }
        .footer-links a:hover {
            color: var(--secondary);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255,255,255,0.05);
            padding: 1.5rem;
            border-radius: var(--radius);
            margin: 1.5rem 0;
            border-left: 4px solid var(--secondary);
        }
        friend-link a {
            color: #ddd;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 768px) {
            :root {
                font-size: 15px;
            }
            .header-container {
                flex-wrap: wrap;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: var(--dark);
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem;
                box-shadow: var(--shadow);
                gap: 1rem;
            }
            .nav-links.active {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            article h1 {
                font-size: 2rem;
            }
            article h2 {
                font-size: 1.6rem;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
        }