* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #ff6b00;
            --secondary-color: #2c3e50;
            --accent-color: #e74c3c;
            --text-color: #333;
            --light-bg: #f8f9fa;
            --white: #ffffff;
            --shadow: 0 2px 10px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: var(--light-bg);
        }
        header {
            background: linear-gradient(135deg, var(--secondary-color), #1a2530);
            color: var(--white);
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: bold;
            color: var(--white);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .logo i {
            color: var(--primary-color);
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .nav-links a {
            color: var(--white);
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
            padding: 0.5rem 1rem;
            border-radius: 4px;
        }
        .nav-links a:hover {
            background-color: rgba(255,255,255,0.1);
            color: var(--primary-color);
        }
        .search-box {
            display: flex;
            margin-left: 2rem;
        }
        .search-box input {
            padding: 0.5rem 1rem;
            border: none;
            border-radius: 4px 0 0 4px;
            outline: none;
        }
        .search-box button {
            background: var(--primary-color);
            border: none;
            color: white;
            padding: 0.5rem 1rem;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: #e55a00;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--white);
            font-size: 1.5rem;
            cursor: pointer;
        }
        .breadcrumb {
            max-width: 1200px;
            margin: 1rem auto;
            padding: 0 1rem;
        }
        .breadcrumb a {
            color: var(--secondary-color);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 1rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
        }
        .article-content {
            background: var(--white);
            padding: 2rem;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }
        .article-header {
            margin-bottom: 2rem;
            border-bottom: 2px solid var(--light-bg);
            padding-bottom: 1rem;
        }
        .article-header h1 {
            font-size: 2.2rem;
            color: var(--secondary-color);
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        .article-meta {
            display: flex;
            gap: 1rem;
            color: #666;
            font-size: 0.9rem;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .featured-image {
            width: 100%;
            height: 400px;
            object-fit: cover;
            border-radius: 8px;
            margin: 1.5rem 0;
        }
        .content-section {
            margin-bottom: 2rem;
        }
        .content-section h2 {
            color: var(--secondary-color);
            margin: 1.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid var(--light-bg);
        }
        .content-section h3 {
            color: var(--primary-color);
            margin: 1rem 0 0.5rem;
        }
        .content-section p {
            margin-bottom: 1rem;
            text-align: justify;
        }
        .highlight-box {
            background: #fff9e6;
            border-left: 4px solid var(--primary-color);
            padding: 1rem;
            margin: 1.5rem 0;
            border-radius: 0 4px 4px 0;
        }
        .step-guide {
            background: var(--light-bg);
            padding: 1.5rem;
            border-radius: 8px;
            margin: 1.5rem 0;
        }
        .step {
            display: flex;
            gap: 1rem;
            margin-bottom: 1rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid #ddd;
        }
        .step:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }
        .step-number {
            background: var(--primary-color);
            color: white;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            flex-shrink: 0;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .sidebar-widget {
            background: var(--white);
            padding: 1.5rem;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            color: var(--secondary-color);
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid var(--light-bg);
        }
        .popular-links {
            list-style: none;
        }
        .popular-links li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px solid var(--light-bg);
        }
        .popular-links a {
            color: var(--text-color);
            text-decoration: none;
            transition: var(--transition);
            display: block;
        }
        .popular-links a:hover {
            color: var(--primary-color);
            transform: translateX(5px);
        }
        .rating-system {
            text-align: center;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            color: #ddd;
            cursor: pointer;
            font-size: 1.5rem;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #ffc107;
        }
        .rating-count {
            font-size: 0.9rem;
            color: #666;
        }
        .comment-system {
            margin-top: 3rem;
        }
        .comment-form {
            background: var(--light-bg);
            padding: 1.5rem;
            border-radius: 8px;
            margin-bottom: 2rem;
        }
        .form-group {
            margin-bottom: 1rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 500;
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-family: inherit;
        }
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }
        .submit-btn {
            background: var(--primary-color);
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 4px;
            cursor: pointer;
            font-weight: bold;
            transition: var(--transition);
        }
        .submit-btn:hover {
            background: #e55a00;
        }
        .comments-list {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .comment {
            background: var(--white);
            padding: 1.5rem;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 0.5rem;
        }
        .comment-author {
            font-weight: bold;
            color: var(--secondary-color);
        }
        .comment-date {
            color: #666;
            font-size: 0.9rem;
        }
        .footer-links {
            max-width: 1200px;
            margin: 2rem auto 0;
            padding: 0 1rem;
        }
        .web-link {
            background: var(--white);
            padding: 1rem;
            margin-bottom: 1rem;
            border-radius: 4px;
            box-shadow: var(--shadow);
        }
        .web-link a {
            color: var(--secondary-color);
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
        }
        .web-link a:hover {
            color: var(--primary-color);
        }
        footer {
            background: var(--secondary-color);
            color: var(--white);
            padding: 2rem 0;
            margin-top: 3rem;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-section h3 {
            color: var(--primary-color);
            margin-bottom: 1rem;
        }
        .footer-links-list {
            list-style: none;
        }
        .footer-links-list li {
            margin-bottom: 0.5rem;
        }
        .footer-links-list a {
            color: #ccc;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links-list a:hover {
            color: var(--primary-color);
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #444;
            color: #999;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--secondary-color);
                flex-direction: column;
                padding: 1rem;
                box-shadow: var(--shadow);
            }
            .nav-links.active {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .search-box {
                margin-left: 0;
                margin-top: 1rem;
                width: 100%;
            }
            .search-box input {
                flex: 1;
            }
            main {
                grid-template-columns: 1fr;
            }
            .header-container {
                flex-wrap: wrap;
            }
            .article-header h1 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 480px) {
            .article-meta {
                flex-direction: column;
                gap: 0.5rem;
            }
            .step {
                flex-direction: column;
            }
            .step-number {
                align-self: flex-start;
            }
        }