* { 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: 1400px;
            margin: 0 auto;
            padding: 0 15px;
        }
        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; margin-top: 1.5rem; border-bottom: 4px solid #f39c12; padding-bottom: 0.5rem; }
        h2 { font-size: 2.2rem; margin-top: 2.5rem; padding-left: 10px; border-left: 5px solid #3498db; }
        h3 { font-size: 1.8rem; margin-top: 2rem; color: #16a085; }
        p { margin-bottom: 1.5rem; text-align: justify; font-size: 1.1rem; }
        .lead { font-size: 1.3rem; font-weight: 300; color: #555; }
        .highlight { background-color: #fffacd; padding: 2px 6px; border-radius: 3px; }
        .term { font-weight: bold; color: #e74c3c; }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        .site-header {
            background: linear-gradient(135deg, #1a2980, #26d0ce);
            color: white;
            padding: 1.5rem 0;
            margin-bottom: 2rem;
            border-radius: 0 0 12px 12px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .logo-container {
            display: flex;
            justify-content: center;
            align-items: center;
            margin-bottom: 1rem;
        }
        .logo {
            font-family: 'Arial Black', sans-serif;
            font-size: 3.2rem;
            text-decoration: none;
            color: #f1c40f;
            text-shadow: 3px 3px 0 #8e44ad, 6px 6px 0 rgba(0,0,0,0.2);
            transition: all 0.3s ease;
            text-align: center;
        }
        .logo:hover {
            color: #fff;
            text-shadow: 3px 3px 0 #9b59b6, 0 0 15px #ff0;
            transform: scale(1.02);
        }
        .logo span { color: #2ecc71; }
        .main-nav {
            background-color: #2c3e50;
            border-radius: 8px;
            padding: 0 1rem;
            margin: 1rem auto;
            position: relative;
        }
        .nav-list {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            list-style: none;
        }
        .nav-list li { margin: 0.5rem; }
        .nav-list a {
            color: #ecf0f1;
            text-decoration: none;
            padding: 0.8rem 1.5rem;
            border-radius: 5px;
            font-weight: 600;
            transition: all 0.3s;
            display: block;
            border: 2px solid transparent;
        }
        .nav-list a:hover, .nav-list a.active {
            background-color: #3498db;
            color: white;
            border-color: #f39c12;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            padding: 1rem;
            background-color: #ecf0f1;
            border-radius: 5px;
            margin: 1rem 0;
            font-size: 0.95rem;
        }
        .breadcrumb a { color: #2980b9; text-decoration: none; }
        .breadcrumb a:hover { text-decoration: underline; }
        .breadcrumb i { margin: 0 8px; color: #7f8c8d; }
        .search-container {
            max-width: 600px;
            margin: 2rem auto;
            padding: 1rem;
            background: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .search-form {
            display: flex;
        }
        .search-input {
            flex-grow: 1;
            padding: 1rem 1.5rem;
            border: 2px solid #ddd;
            border-radius: 50px 0 0 50px;
            font-size: 1.1rem;
            outline: none;
            transition: border 0.3s;
        }
        .search-input:focus { border-color: #3498db; }
        .search-btn {
            background: linear-gradient(to right, #3498db, #2ecc71);
            color: white;
            border: none;
            padding: 0 2rem;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: bold;
            transition: all 0.3s;
        }
        .search-btn:hover { background: linear-gradient(to right, #2980b9, #27ae60); transform: scale(1.03); }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin: 2rem 0;
        }
        @media (max-width: 992px) {
            .content-wrapper { grid-template-columns: 1fr; }
        }
        .main-article { background: white; padding: 2.5rem; border-radius: 12px; box-shadow: 0 6px 20px rgba(0,0,0,0.07); }
        .sidebar {
            background: #fff;
            padding: 1.5rem;
            border-radius: 12px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 20px;
        }
        .widget { margin-bottom: 2rem; }
        .widget-title {
            font-size: 1.4rem;
            color: #2c3e50;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #f39c12;
            margin-bottom: 1rem;
        }
        .stats-list, .tip-list { list-style: none; }
        .stats-list li, .tip-list li {
            padding: 0.8rem;
            margin-bottom: 0.8rem;
            background: #f8f9fa;
            border-left: 4px solid #3498db;
            border-radius: 0 5px 5px 0;
        }
        .tip-list li { border-left-color: #2ecc71; }
        .interaction-section {
            background: white;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            margin: 3rem 0;
        }
        .section-title {
            text-align: center;
            color: #2c3e50;
            margin-bottom: 2rem;
            font-size: 2rem;
        }
        .form-group { margin-bottom: 1.5rem; }
        .form-label { display: block; margin-bottom: 0.5rem; font-weight: 600; color: #555; }
        .form-input, .form-textarea {
            width: 100%;
            padding: 1rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-input:focus, .form-textarea:focus { border-color: #3498db; outline: none; }
        .form-textarea { min-height: 150px; resize: vertical; }
        .rating-container {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            align-items: center;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover, .star.active { color: #f39c12; }
        .form-submit {
            background: linear-gradient(to right, #e74c3c, #f39c12);
            color: white;
            border: none;
            padding: 1rem 2.5rem;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s;
            display: block;
            margin: 1.5rem auto 0;
        }
        .form-submit:hover {
            background: linear-gradient(to right, #c0392b, #e67e22);
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(243, 156, 18, 0.3);
        }
        .featured-image {
            margin: 2.5rem 0;
            text-align: center;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .featured-image img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            transition: transform 0.5s;
        }
        .featured-image img:hover { transform: scale(1.02); }
        .img-caption {
            font-style: italic;
            color: #7f8c8d;
            padding: 0.8rem;
            background: #f8f9fa;
            font-size: 0.95rem;
        }
        .internal-links {
            background: #2c3e50;
            color: white;
            padding: 2.5rem;
            border-radius: 12px;
            margin: 3rem 0 1.5rem 0;
        }
        .internal-links h3 {
            color: #f39c12;
            text-align: center;
            margin-bottom: 1.5rem;
            font-size: 1.8rem;
            border: none;
        }
        .web-links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
        }
        .web-link {
            background: rgba(255,255,255,0.1);
            padding: 1.2rem;
            border-radius: 8px;
            transition: all 0.3s;
        }
        .web-link:hover {
            background: rgba(52, 152, 219, 0.3);
            transform: translateY(-5px);
        }
        .web-link a {
            color: #ecf0f1;
            text-decoration: none;
            font-weight: 600;
            display: flex;
            align-items: center;
        }
        .web-link a:before {
            content: "▶";
            margin-right: 10px;
            color: #f39c12;
            font-size: 0.9rem;
        }
        .web-link a:hover { color: #f1c40f; text-decoration: underline; }
        .site-footer {
            background: #1a252f;
            color: #bdc3c7;
            padding: 3rem 0 1.5rem;
            border-radius: 12px 12px 0 0;
            margin-top: 3rem;
            text-align: center;
        }
        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        .copyright {
            padding-top: 1.5rem;
            border-top: 1px solid #34495e;
            font-size: 0.9rem;
            color: #95a5a6;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            .logo { font-size: 2.5rem; }
            .nav-list {
                flex-direction: column;
                display: none;
                width: 100%;
                padding: 1rem 0;
            }
            .nav-list.active { display: flex; }
            .hamburger { display: block; position: absolute; right: 1rem; top: -3rem; }
            .main-nav { padding-top: 0.5rem; }
            .main-article, .sidebar, .interaction-section { padding: 1.5rem; }
            .content-wrapper { gap: 1.5rem; }
            .search-form { flex-direction: column; }
            .search-input { border-radius: 50px; margin-bottom: 10px; }
            .search-btn { border-radius: 50px; padding: 1rem; }
            .web-links-grid { grid-template-columns: 1fr; }
            .star { font-size: 1.8rem; }
        }
        .text-center { text-align: center; }
        .mb-3 { margin-bottom: 3rem; }
        .mt-3 { margin-top: 3rem; }
        .p-2 { padding: 2rem; }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in { animation: fadeIn 0.8s ease-out; }