:root {
            --primary-blue: #0033a0;
            --secondary-gold: #ffd700;
            --accent-green: #00843d;
            --neutral-light: #f8f9fa;
            --neutral-dark: #212529;
            --text-body: #333333;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        * {
            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: var(--text-body);
            background-color: var(--neutral-light);
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: var(--primary-blue);
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-green);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary-blue) 0%, #001f5e 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            color: var(--secondary-gold);
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: 1px;
            text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
        }
        .logo span {
            color: white;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0;
            border-bottom: 2px solid transparent;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: var(--secondary-gold);
            border-bottom-color: var(--secondary-gold);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 1rem 0;
            font-size: 0.9rem;
        }
        .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: #6c757d;
        }
        .breadcrumb a:hover {
            color: var(--primary-blue);
        }
        .hero {
            background: linear-gradient(rgba(0, 33, 96, 0.85), rgba(0, 33, 96, 0.9)), url('https://images.unsplash.com/photo-1551970630-9b44a7c057a0?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover no-repeat;
            color: white;
            text-align: center;
            padding: 4rem 1rem;
            margin-bottom: 3rem;
            border-radius: 0 0 10px 10px;
        }
        .hero h1 {
            font-size: clamp(2.5rem, 5vw, 3.8rem);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 2rem;
            opacity: 0.95;
        }
        .search-bar {
            max-width: 600px;
            margin: 2rem auto;
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        .search-form {
            display: flex;
            gap: 10px;
        }
        .search-form input {
            flex: 1;
            padding: 15px;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--accent-green);
            color: white;
            border: none;
            padding: 0 30px;
            border-radius: 8px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: #006b31;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        .article-content h2 {
            color: var(--primary-blue);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--secondary-gold);
            font-size: 2rem;
        }
        .article-content h3 {
            color: var(--neutral-dark);
            margin: 2rem 0 1rem;
            font-size: 1.5rem;
        }
        .article-content p {
            margin-bottom: 1.5rem;
            font-size: 1.05rem;
        }
        .article-content ul, .article-content ol {
            margin-left: 1.5rem;
            margin-bottom: 1.5rem;
        }
        .article-content li {
            margin-bottom: 0.5rem;
        }
        .highlight-box {
            background-color: #f0f8ff;
            border-left: 5px solid var(--primary-blue);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .featured-image {
            margin: 2.5rem 0;
            text-align: center;
        }
        .featured-image img {
            border-radius: 10px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
            max-height: 500px;
            object-fit: cover;
            width: 100%;
        }
        .image-caption {
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .keyword-link {
            background-color: #e6f7ff;
            padding: 2px 6px;
            border-radius: 4px;
            font-weight: 600;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            color: var(--primary-blue);
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #eee;
        }
        .user-interaction {
            margin-top: 4rem;
            background: white;
            padding: 2.5rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        .interaction-title {
            color: var(--primary-blue);
            margin-bottom: 2rem;
            text-align: center;
        }
        .rating-form, .comment-form {
            margin-bottom: 3rem;
        }
        .star-rating {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin: 1.5rem 0;
            font-size: 2rem;
            color: #ddd;
        }
        .star-rating i {
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating i:hover,
        .star-rating i.active {
            color: var(--secondary-gold);
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 3px rgba(0, 51, 160, 0.1);
        }
        .submit-btn {
            background-color: var(--accent-green);
            color: white;
            border: none;
            padding: 15px 40px;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: block;
            margin: 0 auto;
        }
        .submit-btn:hover {
            background-color: #006b31;
            transform: translateY(-2px);
        }
        .longtail-links {
            background-color: #f1f5f9;
            padding: 3rem 0;
            margin-top: 4rem;
        }
        .web-link-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
        }
        .web-link {
            background: white;
            padding: 1.2rem;
            border-radius: 8px;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateY(-5px);
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
        }
        .web-link a {
            color: var(--neutral-dark);
            font-weight: 500;
            display: flex;
            align-items: center;
        }
        .web-link a::before {
            content: "🔗";
            margin-right: 10px;
            color: var(--accent-green);
        }
        .site-footer {
            background-color: var(--neutral-dark);
            color: #adb5bd;
            padding: 3rem 0 1.5rem;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }
        .copyright {
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid #495057;
            width: 100%;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav ul {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 100%;
                background-color: var(--primary-blue);
                flex-direction: column;
                align-items: center;
                padding: 2rem 0;
                transition: 0.5s;
                box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
            }
            .main-nav.active ul {
                left: 0;
            }
            .main-nav a {
                font-size: 1.2rem;
                padding: 1rem;
            }
            .hero {
                padding: 3rem 1rem;
            }
            .article-content,
            .user-interaction {
                padding: 1.5rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                padding: 15px;
            }
        }