:root {
            --primary-color: #e63946;
            --secondary-color: #1d3557;
            --accent-color: #f4a261;
            --light-color: #f1faee;
            --dark-color: #1a1a2e;
            --text-color: #333333;
            --light-gray: #f8f9fa;
            --medium-gray: #e9ecef;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --border-radius: 8px;
            --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: 1.6;
            color: var(--text-color);
            background-color: var(--light-gray);
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--secondary-color);
            color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .logo a {
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--accent-color);
        }
        .search-form {
            display: flex;
            width: 300px;
        }
        .search-form input {
            flex: 1;
            padding: 10px 15px;
            border: none;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: #c1121f;
        }
        .main-nav {
            background-color: var(--dark-color);
            padding: 0;
        }
        .nav-list {
            display: flex;
            list-style: none;
            justify-content: center;
        }
        .nav-list li {
            position: relative;
        }
        .nav-list a {
            color: white;
            text-decoration: none;
            padding: 15px 25px;
            display: block;
            font-weight: 600;
            transition: var(--transition);
            text-align: center;
        }
        .nav-list a:hover {
            background-color: var(--primary-color);
            color: white;
        }
        .nav-list a.active {
            background-color: var(--primary-color);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 10px;
        }
        .breadcrumb {
            background-color: var(--medium-gray);
            padding: 12px 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li {
            margin-right: 10px;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin-left: 10px;
            color: #666;
        }
        .breadcrumb a {
            color: var(--secondary-color);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            padding: 30px 0;
            background-color: white;
        }
        .article-header {
            margin-bottom: 40px;
            border-bottom: 3px solid var(--medium-gray);
            padding-bottom: 25px;
        }
        .article-header h1 {
            font-size: 2.5rem;
            color: var(--secondary-color);
            margin-bottom: 15px;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            gap: 20px;
            color: #666;
            font-size: 0.9rem;
            margin-bottom: 15px;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .rating-summary {
            display: flex;
            align-items: center;
            gap: 15px;
            background-color: var(--light-gray);
            padding: 15px;
            border-radius: var(--border-radius);
            margin-top: 15px;
        }
        .stars {
            color: #ffc107;
        }
        .content-section {
            margin-bottom: 40px;
        }
        h2 {
            font-size: 2rem;
            color: var(--secondary-color);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--medium-gray);
        }
        h3 {
            font-size: 1.6rem;
            color: var(--secondary-color);
            margin: 25px 0 15px;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--dark-color);
            margin: 20px 0 10px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            line-height: 1.8;
        }
        .highlight {
            background-color: #fff3cd;
            border-left: 4px solid #ffc107;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .tip-box {
            background-color: #d1ecf1;
            border-left: 4px solid #0dcaf0;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .warning-box {
            background-color: #f8d7da;
            border-left: 4px solid #dc3545;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .image-container {
            margin: 30px 0;
            text-align: center;
        }
        .article-image {
            max-width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .article-image:hover {
            transform: scale(1.02);
        }
        .image-caption {
            font-style: italic;
            color: #666;
            margin-top: 10px;
            font-size: 0.9rem;
        }
        ul, ol {
            margin-left: 30px;
            margin-bottom: 25px;
        }
        li {
            margin-bottom: 10px;
            font-size: 1.1rem;
        }
        .table-container {
            overflow-x: auto;
            margin: 30px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin-bottom: 20px;
        }
        th, td {
            padding: 15px;
            text-align: left;
            border: 1px solid #ddd;
        }
        th {
            background-color: var(--secondary-color);
            color: white;
            font-weight: 600;
        }
        tr:nth-child(even) {
            background-color: #f9f9f9;
        }
        tr:hover {
            background-color: #f1f1f1;
        }
        .interactive-section {
            background-color: var(--light-gray);
            padding: 40px;
            border-radius: var(--border-radius);
            margin: 50px 0;
            box-shadow: var(--shadow);
        }
        .interactive-section h2 {
            text-align: center;
            border: none;
        }
        .form-group {
            margin-bottom: 25px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--secondary-color);
        }
        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            border-color: var(--primary-color);
            outline: none;
            box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.2);
        }
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        .rating-input {
            display: flex;
            gap: 10px;
            flex-direction: row-reverse;
            justify-content: flex-end;
        }
        .rating-input input {
            display: none;
        }
        .rating-input label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-input label:hover,
        .rating-input label:hover ~ label,
        .rating-input input:checked ~ label {
            color: #ffc107;
        }
        .btn {
            display: inline-block;
            background-color: var(--primary-color);
            color: white;
            padding: 12px 30px;
            border: none;
            border-radius: var(--border-radius);
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            text-align: center;
        }
        .btn:hover {
            background-color: #c1121f;
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
        }
        .btn-block {
            display: block;
            width: 100%;
        }
        .long-tail-links {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin: 50px 0;
        }
        .web-link {
            background-color: white;
            padding: 20px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
        }
        .web-link a {
            color: var(--secondary-color);
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            display: block;
        }
        .web-link a:hover {
            color: var(--primary-color);
        }
        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 50px 0 20px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            color: white;
            border-bottom: 2px solid var(--primary-color);
            padding-bottom: 10px;
            margin-bottom: 20px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #ddd;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
            .long-tail-links {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .header-top {
                flex-direction: column;
                gap: 20px;
                padding: 20px 0;
            }
            .search-form {
                width: 100%;
                max-width: 500px;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 20px;
                right: 20px;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                text-align: center;
            }
            .nav-list.active {
                display: flex;
            }
            .article-header h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            h3 {
                font-size: 1.4rem;
            }
            .interactive-section {
                padding: 30px 20px;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            .article-meta {
                flex-direction: column;
                gap: 10px;
            }
            .rating-summary {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .container {
                padding: 0 15px;
            }
        }