* {
            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: #333;
            background-color: #f8f9fa;
            max-width: 100%;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        friend-link {
            display: block;
            font-style: italic;
            margin-top: 1rem;
            padding-left: 1rem;
            border-left: 3px solid #4a6fa5;
        }
        h1, h2, h3, h4 {
            font-family: Georgia, 'Times New Roman', Times, serif;
            color: #2c3e50;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h1 {
            font-size: clamp(2.2rem, 5vw, 3.5rem);
            border-bottom: 3px solid #e74c3c;
            padding-bottom: 0.5rem;
            margin-top: 1.5rem;
        }
        h2 {
            font-size: clamp(1.8rem, 4vw, 2.5rem);
            color: #2980b9;
            margin-top: 2.5rem;
            padding-left: 0.5rem;
            border-left: 4px solid #3498db;
        }
        h3 {
            font-size: clamp(1.4rem, 3.5vw, 1.9rem);
            color: #16a085;
            margin-top: 2rem;
        }
        h4 {
            font-size: clamp(1.1rem, 3vw, 1.4rem);
            color: #8e44ad;
            margin-top: 1.5rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            hyphens: auto;
            font-size: clamp(1rem, 2.5vw, 1.125rem);
        }
        strong {
            color: #c0392b;
            font-weight: 700;
        }
        em {
            color: #27ae60;
            font-style: italic;
        }
        a {
            color: #2980b9;
            text-decoration: none;
            transition: color 0.3s ease, background-color 0.3s ease;
            border-bottom: 1px dotted transparent;
            padding-bottom: 1px;
        }
        a:hover {
            color: #e74c3c;
            border-bottom-color: #e74c3c;
            background-color: rgba(231, 76, 60, 0.05);
        }
        ul, ol {
            margin-left: 1.5rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        blockquote {
            border-left: 5px solid #f1c40f;
            background-color: #fffde7;
            padding: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            border-radius: 0 8px 8px 0;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        header {
            background: linear-gradient(135deg, #1a2980 0%, #26d0ce 100%);
            color: white;
            padding: 1rem 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;
        }
        .logo a {
            font-family: 'Trebuchet MS', sans-serif;
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .logo a:hover {
            color: #f1c40f;
            border-bottom: none;
            background-color: transparent;
        }
        .logo i {
            color: #f1c40f;
            font-size: 2rem;
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .desktop-nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0.75rem;
            border-radius: 4px;
        }
        .desktop-nav a:hover {
            background-color: rgba(255,255,255,0.15);
            border-bottom: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            background-color: #1a2980;
            padding: 1rem;
            box-shadow: 0 5px 10px rgba(0,0,0,0.2);
        }
        .mobile-nav.active {
            display: block;
        }
        .mobile-nav ul {
            list-style: none;
        }
        .mobile-nav li {
            margin-bottom: 1rem;
        }
        .mobile-nav a {
            color: white;
            display: block;
            padding: 0.75rem;
            border-radius: 4px;
        }
        .mobile-nav a:hover {
            background-color: rgba(255,255,255,0.1);
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #ecf0f1;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin: 0 0.5rem;
            color: #7f8c8d;
        }
        .breadcrumb a {
            color: #2980b9;
        }
        .breadcrumb a:hover {
            color: #e74c3c;
        }
        .search-box {
            background-color: #fff;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            margin: 2rem 0;
            text-align: center;
        }
        .search-box h3 {
            color: #2c3e50;
            margin-bottom: 1rem;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.85rem 1rem;
            border: 2px solid #ddd;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        .search-input:focus {
            outline: none;
            border-color: #3498db;
        }
        .search-button {
            background-color: #3498db;
            color: white;
            border: none;
            padding: 0.85rem 1.5rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            font-weight: 600;
            transition: background-color 0.3s;
        }
        .search-button:hover {
            background-color: #2980b9;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background-color: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 18px rgba(0,0,0,0.06);
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid #eee;
            font-size: 0.95rem;
            color: #7f8c8d;
        }
        .last-updated {
            color: #e74c3c;
            font-weight: 600;
        }
        .featured-image {
            margin: 2rem 0;
            text-align: center;
        }
        .featured-image img {
            border-radius: 10px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            transition: transform 0.5s ease;
        }
        .featured-image img:hover {
            transform: scale(1.01);
        }
        .image-caption {
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .content-section {
            margin-bottom: 3rem;
        }
        .tip-box {
            background-color: #e8f4fc;
            border-left: 5px solid #3498db;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .tip-box h4 {
            color: #2980b9;
            margin-top: 0;
        }
        .sidebar {
            background-color: white;
            padding: 1.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 18px rgba(0,0,0,0.06);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar-widget {
            margin-bottom: 2rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid #eee;
        }
        .sidebar-widget:last-child {
            border-bottom: none;
        }
        .sidebar-widget h3 {
            font-size: 1.3rem;
            color: #2c3e50;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #f1c40f;
        }
        .related-links li {
            margin-bottom: 0.75rem;
            list-style: none;
            padding-left: 1.5rem;
            position: relative;
        }
        .related-links li::before {
            content: "→";
            position: absolute;
            left: 0;
            color: #3498db;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .tag {
            background-color: #ecf0f1;
            padding: 0.4rem 0.8rem;
            border-radius: 20px;
            font-size: 0.85rem;
            color: #2c3e50;
            transition: all 0.3s;
        }
        .tag:hover {
            background-color: #3498db;
            color: white;
        }
        .interactive-section {
            background-color: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 18px rgba(0,0,0,0.06);
            margin-top: 2rem;
        }
        .interactive-section h2 {
            text-align: center;
        }
        .rating-widget {
            text-align: center;
            margin-bottom: 2rem;
        }
        .stars {
            display: inline-flex;
            gap: 0.5rem;
            margin: 1rem 0;
            direction: rtl;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star:hover ~ .star {
            color: #f1c40f;
        }
        .star.active {
            color: #f1c40f;
        }
        .rating-form,
        .comment-form {
            max-width: 800px;
            margin: 0 auto;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #2c3e50;
        }
        .form-control {
            width: 100%;
            padding: 0.85rem;
            border: 1px solid #ddd;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        .form-control:focus {
            outline: none;
            border-color: #3498db;
        }
        .submit-button {
            background-color: #27ae60;
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            transition: background-color 0.3s;
        }
        .submit-button:hover {
            background-color: #219653;
        }
        footer {
            background-color: #2c3e50;
            color: #ecf0f1;
            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-logo a {
            color: white;
            font-size: 1.8rem;
            font-weight: 800;
        }
        .footer-links h4 {
            color: #f1c40f;
            margin-top: 0;
        }
        .footer-links ul {
            list-style: none;
            margin-left: 0;
        }
        .footer-links li {
            margin-bottom: 0.5rem;
        }
        .footer-links a {
            color: #bdc3c7;
        }
        .footer-links a:hover {
            color: #f1c40f;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #34495e;
            font-size: 0.9rem;
            color: #95a5a6;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .article-content,
            .interactive-section {
                padding: 1.5rem;
            }
            .header-container,
            .breadcrumb .container {
                padding: 0 1.5rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-input {
                border-radius: 8px 8px 0 0;
                margin-bottom: 0;
            }
            .search-button {
                border-radius: 0 0 8px 8px;
            }
            h2 {
                padding-left: 0;
                border-left: none;
                border-bottom: 2px solid #3498db;
            }
        }
        .text-center {
            text-align: center;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        .highlight {
            background-color: #fffacd;
            padding: 0.2rem 0.4rem;
            border-radius: 3px;
        }
        .divider {
            height: 1px;
            background: linear-gradient(to right, transparent, #3498db, transparent);
            margin: 2.5rem 0;
        }