* {
            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;
            max-width: 100vw;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0055a4 0%, #00468b 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 {
            color: white;
            text-decoration: none;
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
        }
        .logo i {
            margin-right: 10px;
            color: #ffde00;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
        }
        .main-nav li {
            margin-left: 1.8rem;
        }
        .main-nav a {
            color: #e6f0ff;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 0.5rem 0.3rem;
            border-bottom: 2px solid transparent;
            transition: all 0.3s ease;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: #ffde00;
            border-bottom-color: #ffde00;
        }
        .hamburger {
            display: none;
            cursor: pointer;
            font-size: 1.8rem;
            color: white;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin: 0 10px;
            color: #6c757d;
        }
        .breadcrumb a {
            color: #0055a4;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            padding: 2rem 0;
            background: white;
            border-radius: 8px;
            box-shadow: 0 2px 15px rgba(0,0,0,0.05);
            margin-bottom: 3rem;
        }
        article {
            padding: 0 2.5rem;
        }
        .article-header {
            text-align: center;
            margin-bottom: 3rem;
            padding-bottom: 1.5rem;
            border-bottom: 3px solid #f0f0f0;
        }
        h1 {
            font-size: 2.8rem;
            color: #003366;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            color: #6c757d;
            font-style: italic;
            margin-bottom: 1rem;
        }
        h2 {
            font-size: 2rem;
            color: #00468b;
            margin: 2.5rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #e0e0e0;
        }
        h3 {
            font-size: 1.6rem;
            color: #0055a4;
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 500;
            color: #444;
            background-color: #f0f8ff;
            padding: 1.5rem;
            border-left: 5px solid #0055a4;
            border-radius: 0 8px 8px 0;
            margin: 2.5rem 0;
        }
        .highlight-box {
            background: linear-gradient(to right, #fff7e6, #fff);
            border: 2px solid #ffde00;
            border-radius: 10px;
            padding: 2rem;
            margin: 2.5rem 0;
            box-shadow: 0 5px 15px rgba(255,222,0,0.1);
        }
        .price-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2.5rem 0;
            box-shadow: 0 0 20px rgba(0,0,0,0.05);
            border-radius: 10px;
            overflow: hidden;
        }
        .price-table th {
            background-color: #00468b;
            color: white;
            padding: 1.2rem;
            text-align: left;
            font-weight: 700;
        }
        .price-table td {
            padding: 1rem 1.2rem;
            border-bottom: 1px solid #e0e0e0;
        }
        .price-table tr:nth-child(even) {
            background-color: #f9f9f9;
        }
        .price-table tr:hover {
            background-color: #e6f0ff;
            transition: background 0.3s;
        }
        .feature-img {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 12px;
            margin: 2.5rem auto;
            display: block;
            box-shadow: 0 8px 25px rgba(0,0,0,0.15);
            transition: transform 0.5s ease;
        }
        .feature-img:hover {
            transform: scale(1.01);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            margin-bottom: 2.5rem;
        }
        .keyword-link {
            color: #d22;
            font-weight: 600;
            text-decoration: none;
            border-bottom: 1px dotted #d22;
        }
        .keyword-link:hover {
            color: #a00;
            border-bottom-style: solid;
        }
        .tip {
            background-color: #e8f5e9;
            border-left: 5px solid #4caf50;
            padding: 1.2rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .warning {
            background-color: #fff3e0;
            border-left: 5px solid #ff9800;
            padding: 1.2rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        blockquote {
            border-left: 5px solid #0055a4;
            background-color: #f0f8ff;
            padding: 1.5rem 2rem;
            margin: 2.5rem 0;
            font-style: italic;
            color: #444;
        }
        .interactive-module {
            background: #f8f9fa;
            border: 1px solid #dee2e6;
            border-radius: 12px;
            padding: 2rem;
            margin: 3rem 0;
        }
        .module-title {
            display: flex;
            align-items: center;
            color: #00468b;
            margin-bottom: 1.5rem;
        }
        .module-title i {
            margin-right: 10px;
            font-size: 1.5rem;
        }
        .search-form, .comment-form, .rating-form {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            margin-top: 1.5rem;
        }
        .form-group {
            flex: 1 1 300px;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #555;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 1px solid #ced4da;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #0055a4;
            box-shadow: 0 0 0 3px rgba(0,85,164,0.1);
        }
        button, .btn {
            background: linear-gradient(to right, #0055a4, #00468b);
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        button:hover, .btn:hover {
            background: linear-gradient(to right, #00468b, #003366);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .star-rating {
            display: flex;
            gap: 5px;
            margin: 1rem 0;
        }
        .star-rating i {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating i:hover,
        .star-rating i.active {
            color: #ffde00;
        }
        .footer-links-section {
            background: #e9ecef;
            padding: 3rem 0 2rem;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.5rem;
            margin-bottom: 2rem;
        }
        .web-link {
            background: white;
            padding: 1.2rem;
            border-radius: 8px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
            transition: transform 0.3s;
        }
        .web-link:hover {
            transform: translateY(-5px);
        }
        .web-link a {
            color: #0055a4;
            text-decoration: none;
            font-weight: 600;
            display: block;
            padding: 0.5rem 0;
        }
        .web-link a:hover {
            text-decoration: underline;
            color: #003366;
        }
        .site-footer {
            background: #003366;
            color: #cce0ff;
            padding: 3rem 0 1.5rem;
        }
        .footer-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: flex-start;
            gap: 2rem;
        }
        .footer-logo {
            flex: 1;
            min-width: 250px;
        }
        .footer-logo .logo-text {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            margin-bottom: 1rem;
        }
        .footer-links {
            flex: 2;
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
        }
        .footer-col h4 {
            color: #ffde00;
            margin-bottom: 1.2rem;
            font-size: 1.2rem;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col li {
            margin-bottom: 0.7rem;
        }
        .footer-col a {
            color: #cce0ff;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-col a:hover {
            color: #ffde00;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #00468b;
            color: #99c2ff;
            font-size: 0.95rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            article { padding: 0 1.5rem; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 100%;
                background: #00468b;
                transition: left 0.4s ease;
                padding: 2rem;
                box-shadow: 0 5px 10px rgba(0,0,0,0.2);
                z-index: 999;
            }
            .main-nav.active {
                left: 0;
            }
            .main-nav ul {
                flex-direction: column;
                align-items: center;
            }
            .main-nav li {
                margin: 1rem 0;
            }
            .header-container {
                padding: 0 15px;
            }
            .feature-img {
                margin: 2rem auto;
            }
            .footer-container {
                flex-direction: column;
                gap: 2.5rem;
            }
        }
        @media (max-width: 576px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            article { padding: 0 1rem; }
            .interactive-module { padding: 1.5rem; }
            .search-form, .comment-form, .rating-form { flex-direction: column; }
            .form-group { flex: 1 1 100%; }
        }