:root {
            --primary: #0056A7; 
            --secondary: #FFD700; 
            --accent: #BE1622; 
            --light: #F5F7FA;
            --dark: #1A2B3C;
            --gray: #6C757D;
            --success: #28A745;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --radius: 8px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #fff;
            overflow-x: hidden;
        }
        .site-header {
            background: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 0.75rem 2rem;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1400px;
            margin: 0 auto;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .logo i {
            color: var(--secondary);
        }
        .logo span {
            color: var(--accent);
        }
        .nav-menu {
            display: flex;
            gap: 2rem;
            list-style: none;
        }
        .nav-menu a {
            text-decoration: none;
            color: var(--dark);
            font-weight: 600;
            font-size: 1rem;
            padding: 0.5rem 0;
            position: relative;
            transition: var(--transition);
        }
        .nav-menu a:hover {
            color: var(--primary);
        }
        .nav-menu a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--secondary);
            transition: var(--transition);
        }
        .nav-menu a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: var(--primary);
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            background: var(--light);
            padding: 1rem 2rem;
            border-bottom: 1px solid #eaeaea;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            max-width: 1400px;
            margin: 0 auto;
            gap: 0.5rem;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
        }
        .breadcrumb a {
            color: var(--gray);
            text-decoration: none;
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary);
            text-decoration: underline;
        }
        .breadcrumb .separator {
            margin: 0 0.5rem;
            color: #999;
        }
        .container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 2rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        main {
            min-width: 0; 
        }
        article {
            background: white;
            border-radius: var(--radius);
            overflow: hidden;
        }
        .article-header {
            margin-bottom: 2.5rem;
            padding-bottom: 1.5rem;
            border-bottom: 3px solid var(--light);
        }
        .article-header h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            color: var(--dark);
            margin-bottom: 1.5rem;
        }
        .meta-info {
            display: flex;
            gap: 1.5rem;
            color: var(--gray);
            font-size: 0.9rem;
        }
        .meta-info i {
            margin-right: 0.5rem;
        }
        .content {
            font-size: 1.125rem;
        }
        .content > * + * {
            margin-top: 1.5rem;
        }
        .content p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .content h2 {
            font-size: 2rem;
            color: var(--primary);
            margin: 2.5rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--secondary);
        }
        .content h3 {
            font-size: 1.6rem;
            color: var(--dark);
            margin: 2rem 0 1rem;
        }
        .content h4 {
            font-size: 1.3rem;
            color: #444;
            margin: 1.5rem 0 1rem;
        }
        .content strong {
            color: var(--accent);
            font-weight: 700;
        }
        .content em {
            color: #555;
            font-style: italic;
        }
        .content blockquote {
            border-left: 4px solid var(--secondary);
            padding: 1.5rem 2rem;
            background: var(--light);
            margin: 2rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
            font-style: italic;
        }
        .content ul, .content ol {
            padding-left: 2rem;
            margin: 1.5rem 0;
        }
        .content li {
            margin-bottom: 0.75rem;
        }
        .price-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            box-shadow: var(--shadow);
            border-radius: var(--radius);
            overflow: hidden;
        }
        .price-table th {
            background: var(--primary);
            color: white;
            padding: 1.25rem;
            text-align: left;
            font-weight: 600;
        }
        .price-table td {
            padding: 1rem 1.25rem;
            border-bottom: 1px solid #eee;
        }
        .price-table tr:nth-child(even) {
            background: #f9f9f9;
        }
        .price-table tr:hover {
            background: #f0f7ff;
        }
        .article-image {
            width: 100%;
            height: auto;
            border-radius: var(--radius);
            margin: 2rem 0;
            box-shadow: var(--shadow);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .internal-links {
            background: linear-gradient(135deg, #f8f9ff 0%, #eef2ff 100%);
            border-left: 4px solid var(--primary);
            padding: 1.5rem;
            margin: 2.5rem 0;
            border-radius: var(--radius);
        }
        .internal-links h3 {
            margin-top: 0;
            color: var(--primary);
        }
        .internal-links ul {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            list-style: none;
            padding-left: 0;
        }
        .internal-links a {
            color: #2c5282;
            text-decoration: none;
            padding: 0.5rem 0.75rem;
            background: white;
            border-radius: 6px;
            display: block;
            transition: var(--transition);
            border: 1px solid #e2e8f0;
        }
        .internal-links a:hover {
            background: var(--primary);
            color: white;
            transform: translateY(-2px);
        }
        aside {
            position: sticky;
            top: 120px;
            height: fit-content;
        }
        .sidebar-widget {
            background: white;
            border-radius: var(--radius);
            padding: 1.75rem;
            margin-bottom: 2rem;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            color: var(--primary);
            margin-bottom: 1.25rem;
            padding-bottom: 0.75rem;
            border-bottom: 2px solid var(--light);
            font-size: 1.3rem;
        }
        .search-form {
            display: flex;
            margin-top: 1rem;
        }
        .search-form input {
            flex: 1;
            padding: 0.9rem 1rem;
            border: 2px solid #ddd;
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: #004080;
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1.5rem 0;
            font-size: 1.8rem;
            color: #ffc107;
        }
        .star {
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover {
            transform: scale(1.2);
        }
        .rating-form button {
            background: var(--success);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 50px;
            cursor: pointer;
            font-weight: 600;
            width: 100%;
            transition: var(--transition);
        }
        .rating-form button:hover {
            background: #218838;
        }
        .comments-section {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 3px solid var(--light);
        }
        .comment-form {
            background: var(--light);
            padding: 2rem;
            border-radius: var(--radius);
            margin-bottom: 2.5rem;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--dark);
        }
        .form-control {
            width: 100%;
            padding: 0.9rem 1rem;
            border: 2px solid #ddd;
            border-radius: var(--radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary);
        }
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        .submit-btn {
            background: var(--primary);
            color: white;
            border: none;
            padding: 1rem 2.5rem;
            border-radius: var(--radius);
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
        }
        .submit-btn:hover {
            background: #004080;
            transform: translateY(-2px);
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 3rem 2rem 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
        }
        .footer-section h3 {
            color: var(--secondary);
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.75rem;
        }
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 0.5rem;
        }
        friend-link {
            display: block;
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid #444;
        }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            list-style: none;
        }
        .friend-links a {
            background: rgba(255,255,255,0.1);
            color: #ccc;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            text-decoration: none;
            transition: var(--transition);
        }
        .friend-links a:hover {
            background: var(--primary);
            color: white;
        }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 1024px) {
            .container {
                grid-template-columns: 1fr;
                gap: 2rem;
                padding: 1.5rem;
            }
            .article-header h1 {
                font-size: 2.3rem;
            }
            aside {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .site-header {
                padding: 0.75rem 1rem;
            }
            .hamburger {
                display: block;
            }
            .nav-menu {
                position: fixed;
                top: 70px;
                left: -100%;
                flex-direction: column;
                background: white;
                width: 100%;
                padding: 2rem;
                box-shadow: var(--shadow);
                transition: var(--transition);
                z-index: 999;
            }
            .nav-menu.active {
                left: 0;
            }
            .nav-menu a {
                padding: 1rem 0;
                border-bottom: 1px solid #eee;
            }
            .breadcrumb {
                padding: 1rem;
            }
            .article-header h1 {
                font-size: 1.9rem;
            }
            .content h2 {
                font-size: 1.7rem;
            }
            .content h3 {
                font-size: 1.4rem;
            }
            .price-table {
                display: block;
                overflow-x: auto;
            }
            .footer-container {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.6s ease-out;
        }
        .highlight {
            background: linear-gradient(120deg, #ffd70022 0%, #ffd70022 100%);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        .divider {
            height: 1px;
            background: linear-gradient(to right, transparent, #ddd, transparent);
            margin: 2.5rem 0;
        }