* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.7;
            font-size: 1.1rem;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        .site-header {
            background: linear-gradient(135deg, #2c3e50, #4a6491);
            color: white;
            padding: 1.5rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .site-logo a {
            font-size: 2.2rem;
            font-weight: 800;
            color: #f1c40f;
            text-decoration: none;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
            letter-spacing: 1px;
            transition: color 0.3s ease;
        }
        .site-logo a:hover {
            color: #ffdd40;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.8rem 0;
            font-size: 0.95rem;
            color: #6c757d;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin: 0 10px;
            color: #999;
        }
        .breadcrumb a {
            color: #4a6491;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .main-nav {
            display: flex;
        }
        .nav-list {
            display: flex;
            list-style: none;
        }
        .nav-list li {
            margin-left: 2rem;
        }
        .nav-list a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a:hover,
        .nav-list a:focus {
            background-color: rgba(255, 255, 255, 0.15);
            transform: translateY(-2px);
        }
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .search-section {
            background-color: #e3f2fd;
            padding: 2rem 0;
            text-align: center;
            margin: 2rem 0;
            border-radius: 10px;
        }
        .search-form {
            max-width: 700px;
            margin: 0 auto;
            display: flex;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            border-radius: 50px;
            overflow: hidden;
        }
        .search-input {
            flex-grow: 1;
            padding: 1.2rem 1.8rem;
            border: none;
            font-size: 1.1rem;
            outline: none;
        }
        .search-btn {
            background: linear-gradient(to right, #3498db, #2980b9);
            color: white;
            border: none;
            padding: 0 2.5rem;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.1rem;
            transition: background 0.3s ease;
        }
        .search-btn:hover {
            background: linear-gradient(to right, #2980b9, #1f6394);
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 3rem 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-body {
            background-color: white;
            padding: 3rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
        }
        .article-body h1 {
            font-size: 2.8rem;
            color: #2c3e50;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #f1c40f;
            padding-bottom: 0.7rem;
        }
        .article-body h2 {
            font-size: 2.2rem;
            color: #3498db;
            margin: 2.8rem 0 1.5rem 0;
            padding-top: 1rem;
        }
        .article-body h3 {
            font-size: 1.8rem;
            color: #2c3e50;
            margin: 2.2rem 0 1.2rem 0;
        }
        .article-body h4 {
            font-size: 1.5rem;
            color: #555;
            margin: 1.8rem 0 1rem 0;
        }
        .article-body p {
            margin-bottom: 1.8rem;
            text-align: justify;
            font-size: 1.15rem;
        }
        .article-body strong {
            color: #e74c3c;
            font-weight: 700;
        }
        .article-body em {
            color: #27ae60;
            font-style: italic;
        }
        .intro-text {
            font-size: 1.3rem;
            background-color: #f8f9fa;
            padding: 1.8rem;
            border-left: 5px solid #3498db;
            margin-bottom: 2.5rem;
            border-radius: 0 8px 8px 0;
        }
        .featured-image {
            margin: 2.5rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
            max-width: 900px;
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 0.8rem;
            font-size: 1rem;
        }
        .content-link {
            color: #2980b9;
            text-decoration: none;
            font-weight: 600;
            border-bottom: 1px dotted #2980b9;
            transition: all 0.2s;
        }
        .content-link:hover {
            color: #e74c3c;
            border-bottom: 1px solid #e74c3c;
        }
        blockquote {
            background: linear-gradient(to right, #f8f9fa, #e9ecef);
            border-left: 6px solid #f1c40f;
            padding: 2rem;
            margin: 2.5rem 0;
            font-size: 1.3rem;
            font-style: italic;
            color: #2c3e50;
            border-radius: 0 10px 10px 0;
        }
        .sidebar {
            background-color: white;
            padding: 2rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            align-self: start;
            position: sticky;
            top: 140px;
        }
        .sidebar-widget {
            margin-bottom: 2.5rem;
        }
        .sidebar-widget h3 {
            font-size: 1.5rem;
            color: #2c3e50;
            margin-bottom: 1.5rem;
            padding-bottom: 0.7rem;
            border-bottom: 2px solid #f1c40f;
        }
        .related-links {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 1rem;
            padding-bottom: 1rem;
            border-bottom: 1px dashed #eee;
        }
        .related-links a {
            color: #555;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: color 0.3s;
        }
        .related-links a:hover {
            color: #3498db;
        }
        .user-interaction {
            background-color: white;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            margin-top: 3rem;
        }
        .interaction-title {
            font-size: 2rem;
            color: #2c3e50;
            margin-bottom: 2rem;
            text-align: center;
        }
        .interaction-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        .comment-form,
        .rating-form {
            display: flex;
            flex-direction: column;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #444;
        }
        .form-input,
        .form-textarea {
            width: 100%;
            padding: 1rem;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-input:focus,
        .form-textarea:focus {
            border-color: #3498db;
            outline: none;
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
        }
        .form-textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-btn {
            background: linear-gradient(to right, #27ae60, #219653);
            color: white;
            border: none;
            padding: 1.2rem 2rem;
            font-size: 1.1rem;
            font-weight: 600;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.3s ease;
            align-self: flex-start;
        }
        .submit-btn:hover {
            background: linear-gradient(to right, #219653, #1e8449);
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(33, 150, 83, 0.3);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 5px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2.2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: #f1c40f;
        }
        .site-footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: #f1c40f;
            margin-bottom: 1rem;
        }
        .footer-links h4 {
            font-size: 1.4rem;
            margin-bottom: 1.5rem;
            color: #f1c40f;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #bdc3c7;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-links a:hover {
            color: #f1c40f;
        }
        friend-link {
            display: block;
            margin-top: 1rem;
            padding-top: 1rem;
            border-top: 1px solid #4a6491;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #4a6491;
            font-size: 0.95rem;
            color: #95a5a6;
        }
        @media (max-width: 768px) {
            .hamburger-btn {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 90px;
                right: -100%;
                background-color: #2c3e50;
                width: 280px;
                height: calc(100vh - 90px);
                flex-direction: column;
                padding: 2rem;
                transition: right 0.4s ease;
                box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
            }
            .main-nav.active {
                right: 0;
            }
            .nav-list {
                flex-direction: column;
                width: 100%;
            }
            .nav-list li {
                margin: 0 0 1.5rem 0;
            }
            .nav-list a {
                padding: 0.8rem 1rem;
                justify-content: flex-start;
            }
            .article-body {
                padding: 2rem;
            }
            .article-body h1 {
                font-size: 2.2rem;
            }
            .article-body h2 {
                font-size: 1.9rem;
            }
            .article-body h3 {
                font-size: 1.6rem;
            }
            .search-form {
                flex-direction: column;
                border-radius: 10px;
            }
            .search-input {
                border-radius: 10px 10px 0 0;
            }
            .search-btn {
                border-radius: 0 0 10px 10px;
                padding: 1.2rem;
            }
            .sidebar {
                position: static;
            }
        }