* {
            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: 100vw;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        h1, h2, h3, h4 {
            font-family: Georgia, 'Times New Roman', Times, serif;
            color: #2c3e50;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            border-bottom: 3px solid #3498db;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2.2rem;
            color: #2980b9;
            margin-top: 2.5rem;
        }
        h3 {
            font-size: 1.8rem;
            color: #16a085;
            margin-top: 2rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
            hyphens: auto;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 500;
            color: #555;
        }
        .highlight {
            background-color: #fffacd;
            padding: 0.2rem 0.5rem;
            border-radius: 3px;
            font-weight: 600;
        }
        .term {
            font-style: italic;
            color: #e74c3c;
        }
        em {
            color: #7f8c8d;
        }
        strong {
            color: #2c3e50;
        }
        blockquote {
            border-left: 5px solid #3498db;
            padding-left: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            color: #555;
            background-color: #ecf0f1;
            padding: 1.5rem;
            border-radius: 0 8px 8px 0;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin: 2rem 0;
        }
        @media (max-width: 992px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
        }
        .site-header {
            background: linear-gradient(135deg, #1a2980, #26d0ce);
            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-size: 2.2rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            font-family: 'Trebuchet MS', sans-serif;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .logo span {
            color: #f1c40f;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            padding: 0.7rem 1.2rem;
            border-radius: 4px;
            font-weight: 600;
            transition: background-color 0.3s;
            margin-left: 0.5rem;
        }
        .main-nav a:hover,
        .main-nav a.active {
            background-color: rgba(255,255,255,0.15);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #ecf0f1;
            padding: 0.8rem 1.5rem;
            font-size: 0.95rem;
            margin-top: 0.2rem;
        }
        .breadcrumb a {
            color: #3498db;
            text-decoration: none;
        }
        .breadcrumb span {
            color: #7f8c8d;
        }
        .search-box {
            background-color: #2c3e50;
            padding: 1.5rem;
            border-radius: 8px;
            margin: 1.5rem 0;
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex-grow: 1;
            padding: 0.9rem 1.2rem;
            border: none;
            border-radius: 4px 0 0 4px;
            font-size: 1rem;
        }
        .search-form button {
            background-color: #e74c3c;
            color: white;
            border: none;
            padding: 0 1.8rem;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background-color 0.3s;
        }
        .search-form button:hover {
            background-color: #c0392b;
        }
        main {
            background-color: white;
            padding: 2.5rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            margin-bottom: 2rem;
        }
        .article-meta {
            color: #7f8c8d;
            font-size: 0.95rem;
            margin-bottom: 2rem;
            border-bottom: 1px dashed #ddd;
            padding-bottom: 1rem;
        }
        .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);
            border: 5px solid #fff;
            outline: 1px solid #eee;
        }
        .image-caption {
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .strategy-card {
            background: #f8f9fa;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 4px solid #3498db;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .strategy-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.08);
        }
        .sidebar {
            background-color: white;
            padding: 1.8rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar-widget {
            margin-bottom: 2.5rem;
        }
        .sidebar-widget h3 {
            font-size: 1.4rem;
            border-bottom: 2px solid #eee;
            padding-bottom: 0.7rem;
            margin-bottom: 1.2rem;
        }
        .popular-links {
            list-style: none;
        }
        .popular-links li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px dashed #eee;
        }
        .popular-links a {
            color: #3498db;
            text-decoration: none;
            transition: color 0.3s;
        }
        .popular-links a:hover {
            color: #e74c3c;
            text-decoration: underline;
        }
        .user-interaction {
            background-color: #f1f8ff;
            padding: 2rem;
            border-radius: 10px;
            margin: 3rem 0;
            border: 1px solid #d1e3ff;
        }
        .interaction-title {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #2c3e50;
        }
        .rating-form, .comment-form {
            margin-top: 1.5rem;
        }
        .stars {
            display: flex;
            gap: 5px;
            margin: 1rem 0;
        }
        .star {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active {
            color: #f1c40f;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: 4px;
            font-family: inherit;
            font-size: 1rem;
        }
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }
        .submit-btn {
            background-color: #27ae60;
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 4px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.3s;
        }
        .submit-btn:hover {
            background-color: #219653;
        }
        .web-links-section {
            background-color: #2c3e50;
            color: white;
            padding: 2.5rem 0;
            margin-top: 3rem;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.5rem;
        }
        .web-link {
            background-color: rgba(255,255,255,0.05);
            padding: 1.2rem;
            border-radius: 6px;
            transition: background-color 0.3s;
        }
        .web-link:hover {
            background-color: rgba(255,255,255,0.1);
        }
        .web-link a {
            color: #3498db;
            text-decoration: none;
            font-weight: 500;
        }
        .web-link a:hover {
            text-decoration: underline;
        }
        .site-footer {
            background-color: #1a252f;
            color: #bdc3c7;
            padding: 3rem 0 1.5rem;
        }
        .footer-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2rem;
        }
        .footer-col {
            flex: 1;
            min-width: 250px;
        }
        .footer-col h4 {
            color: #ecf0f1;
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #95a5a6;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-links a:hover {
            color: #3498db;
        }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid #2c3e50;
            color: #7f8c8d;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            .header-container {
                flex-wrap: wrap;
            }
            .main-nav {
                display: none;
                width: 100%;
                order: 3;
                margin-top: 1rem;
            }
            .main-nav.active {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
            }
            .main-nav a {
                display: block;
                margin: 0.3rem 0;
                padding: 0.8rem;
            }
            .hamburger {
                display: block;
            }
            main, .sidebar {
                padding: 1.5rem;
            }
            .content-wrapper {
                gap: 2rem;
            }
        }