* { 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: #2c3e50;
            background-color: #f8f9fa;
            overflow-x: hidden;
        }
        a { text-decoration: none; color: inherit; }
        ul { list-style: none; }
        img { max-width: 100%; height: auto; display: block; }
        h1, h2, h3, h4 { font-family: 'Georgia', serif; color: #1a5276; margin-bottom: 1rem; line-height: 1.3; }
        h1 { font-size: 2.8rem; border-bottom: 3px solid #f1c40f; padding-bottom: 0.5rem; }
        h2 { font-size: 2.2rem; padding-top: 1rem; }
        h3 { font-size: 1.6rem; color: #2874a6; }
        p { margin-bottom: 1.5rem; font-size: 1.1rem; }
        .lead { font-size: 1.3rem; font-weight: 300; color: #5d6d7e; }
        .highlight { background-color: #fffacd; padding: 0.2rem 0.5rem; border-radius: 3px; }
        strong { color: #1a5276; }
        em { color: #7d6608; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .section { padding: 3rem 0; }
        .main-header {
            background: linear-gradient(135deg, #1a5276 0%, #2874a6 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 800;
            font-family: 'Georgia', serif;
            color: #f1c40f;
            text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
        }
        .logo span { color: white; }
        .main-nav ul {
            display: flex;
            gap: 2rem;
        }
        .main-nav a {
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0;
            transition: color 0.3s;
            position: relative;
        }
        .main-nav a:hover { color: #f1c40f; }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: #f1c40f;
            transition: width 0.3s;
        }
        .main-nav a:hover::after { width: 100%; }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        #nav-toggle { display: none; }
        .breadcrumb {
            background-color: #e8f4fc;
            padding: 0.8rem 0;
            font-size: 0.95rem;
            margin-bottom: 2rem;
        }
        .breadcrumb ul {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 0.5rem;
            color: #7f8c8d;
        }
        .breadcrumb a { color: #3498db; }
        .breadcrumb a:hover { text-decoration: underline; }
        .search-widget {
            background: #fff;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            margin: 2rem 0;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.9rem 1.2rem;
            border: 2px solid #3498db;
            border-radius: 8px 0 0 8px;
            font-size: 1.1rem;
        }
        .search-btn {
            background: #3498db;
            color: white;
            border: none;
            padding: 0 1.8rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.3s;
        }
        .search-btn:hover { background: #2980b9; }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.07);
            margin-bottom: 3rem;
        }
        .featured-img {
            width: 100%;
            border-radius: 10px;
            margin: 2rem auto;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            border: 5px solid #f1c40f;
        }
        .info-box {
            background: #e8f4fc;
            border-left: 5px solid #3498db;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2.5rem 0;
            box-shadow: 0 4px 8px rgba(0,0,0,0.05);
        }
        .comparison-table th, .comparison-table td {
            padding: 1rem;
            text-align: left;
            border: 1px solid #ddd;
        }
        .comparison-table th {
            background-color: #1a5276;
            color: white;
            font-weight: 600;
        }
        .comparison-table tr:nth-child(even) { background-color: #f9f9f9; }
        .comparison-table tr:hover { background-color: #f1f8ff; }
        .interaction-section {
            background: white;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.07);
            margin: 2.5rem 0;
        }
        .interaction-section h2 { text-align: center; }
        .form-group { margin-bottom: 1.5rem; }
        .form-label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #2c3e50;
        }
        .form-input, .form-textarea {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #bdc3c7;
            border-radius: 6px;
            font-size: 1rem;
            font-family: inherit;
            transition: border 0.3s;
        }
        .form-input:focus, .form-textarea:focus {
            outline: none;
            border-color: #3498db;
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
        }
        .rating {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #f1c40f;
            margin: 1rem 0;
        }
        .rating i { cursor: pointer; transition: transform 0.2s; }
        .rating i:hover { transform: scale(1.2); }
        .submit-btn {
            background: linear-gradient(to right, #2ecc71, #27ae60);
            color: white;
            border: none;
            padding: 1rem 2.5rem;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
        }
        .submit-btn:hover {
            background: linear-gradient(to right, #27ae60, #219653);
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(39, 174, 96, 0.3);
        }
        .long-tail-links {
            background: #1a5276;
            color: white;
            padding: 2.5rem 0;
            margin-top: 3rem;
        }
        .long-tail-links h3 {
            color: #f1c40f;
            text-align: center;
            margin-bottom: 2rem;
        }
        .web-links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.2rem;
        }
        .web-link {
            background: rgba(255,255,255,0.1);
            padding: 1rem;
            border-radius: 6px;
            transition: transform 0.3s, background 0.3s;
        }
        .web-link:hover {
            background: rgba(241, 196, 15, 0.2);
            transform: translateY(-5px);
        }
        .web-link a {
            display: block;
            color: #ecf0f1;
            font-weight: 500;
        }
        .web-link a:hover { color: #f1c40f; }
        .main-footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 0 1.5rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-logo { font-size: 2rem; font-weight: 800; color: #f1c40f; }
        .footer-nav h4, .footer-contact h4 {
            color: #f1c40f;
            margin-bottom: 1.2rem;
            font-size: 1.3rem;
        }
        .footer-nav ul li { margin-bottom: 0.8rem; }
        .footer-nav a:hover { color: #f1c40f; }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #4a6572;
            font-size: 0.9rem;
            color: #bdc3c7;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.9rem; }
            .main-nav ul { gap: 1.2rem; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav ul {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background: #1a5276;
                flex-direction: column;
                padding: 2rem;
                gap: 0;
                clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
                transition: clip-path 0.4s ease-in-out;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            }
            .main-nav ul li { width: 100%; border-bottom: 1px solid rgba(255,255,255,0.1); }
            .main-nav ul li:last-child { border-bottom: none; }
            .main-nav a {
                display: block;
                padding: 1rem 0;
            }
            #nav-toggle:checked ~ .main-nav ul {
                clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
            }
            .header-content { flex-wrap: wrap; }
            .search-form { flex-direction: column; }
            .search-input { border-radius: 8px; margin-bottom: 0.5rem; }
            .search-btn { border-radius: 8px; padding: 0.9rem; }
            .article-content { padding: 1.5rem; }
        }
        @media (max-width: 576px) {
            .container { padding: 0 1rem; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .section { padding: 2rem 0; }
        }