:root {
            --primary-color: #2a4365;
            --secondary-color: #c53030;
            --accent-color: #d69e2e;
            --bg-light: #f7fafc;
            --bg-dark: #1a202c;
            --text-primary: #2d3748;
            --text-secondary: #4a5568;
            --border-color: #e2e8f0;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.6;
            color: var(--text-primary);
            background-color: #fff;
        }
        a {
            color: var(--secondary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-color);
            text-decoration: underline;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary-color) 0%, #1a202c 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 {
            font-size: 1.8rem;
            font-weight: 700;
            letter-spacing: 1px;
        }
        .logo a {
            color: white;
        }
        .logo span {
            color: var(--accent-color);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            font-weight: 500;
        }
        .main-nav a:hover {
            color: var(--accent-color);
            text-decoration: none;
        }
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: var(--bg-light);
            padding: 0.75rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin-left: 0.5rem;
            color: var(--text-secondary);
        }
        .search-container {
            background-color: var(--bg-light);
            padding: 2rem 0;
            text-align: center;
        }
        .search-box {
            max-width: 600px;
            margin: 0 auto;
            position: relative;
        }
        .search-box input {
            width: 100%;
            padding: 0.9rem 1.2rem;
            border: 2px solid var(--border-color);
            border-radius: 50px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-box input:focus {
            outline: none;
            border-color: var(--secondary-color);
            box-shadow: 0 0 0 3px rgba(197, 48, 48, 0.2);
        }
        .search-box button {
            position: absolute;
            right: 10px;
            top: 50%;
            transform: translateY(-50%);
            background: var(--secondary-color);
            color: white;
            border: none;
            border-radius: 50%;
            width: 42px;
            height: 42px;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: #9b2c2c;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2.5rem 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-header {
            margin-bottom: 2.5rem;
            border-bottom: 2px solid var(--border-color);
            padding-bottom: 1.5rem;
        }
        .article-header h1 {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .meta-info {
            display: flex;
            gap: 1.5rem;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        .meta-info span {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .article-body h2 {
            font-size: 1.8rem;
            color: var(--primary-color);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid var(--border-color);
        }
        .article-body h3 {
            font-size: 1.4rem;
            color: var(--secondary-color);
            margin: 2rem 0 1rem;
        }
        .article-body p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .article-body strong {
            color: var(--primary-color);
            font-weight: 700;
        }
        .article-body emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        .tier-section {
            background: var(--bg-light);
            border-radius: 10px;
            padding: 2rem;
            margin: 2.5rem 0;
            border-left: 5px solid var(--accent-color);
        }
        .tier-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
            margin-top: 1.5rem;
        }
        .tier-category {
            background: white;
            padding: 1.5rem;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }
        .tier-category h4 {
            color: var(--secondary-color);
            margin-bottom: 1rem;
            font-size: 1.3rem;
        }
        .tier-category ul {
            list-style: none;
        }
        .tier-category li {
            padding: 0.5rem 0;
            border-bottom: 1px dashed var(--border-color);
            display: flex;
            align-items: center;
            gap: 0.7rem;
        }
        .tier-category li:last-child {
            border-bottom: none;
        }
        .featured-image {
            margin: 2.5rem 0;
            text-align: center;
        }
        .featured-image img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        .image-caption {
            margin-top: 0.8rem;
            font-style: italic;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        .sidebar-widget {
            background: var(--bg-light);
            padding: 1.8rem;
            border-radius: 10px;
            margin-bottom: 2rem;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            color: var(--primary-color);
            margin-bottom: 1.2rem;
            padding-bottom: 0.7rem;
            border-bottom: 2px solid var(--accent-color);
        }
        .quick-links ul {
            list-style: none;
        }
        .quick-links li {
            margin-bottom: 0.8rem;
        }
        .quick-links a {
            display: block;
            padding: 0.8rem;
            background: white;
            border-radius: 6px;
            border-left: 4px solid var(--secondary-color);
            transition: var(--transition);
        }
        .quick-links a:hover {
            background: #fff5f5;
            transform: translateX(5px);
            text-decoration: none;
        }
        .interactive-section {
            background: white;
            border: 2px solid var(--border-color);
            border-radius: 10px;
            padding: 2rem;
            margin: 3rem 0;
        }
        .rating-container {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 2rem;
            color: #e2e8f0;
            cursor: pointer;
        }
        .stars .star {
            transition: var(--transition);
        }
        .stars .star:hover,
        .stars .star.active {
            color: #f6ad55;
            transform: scale(1.1);
        }
        .comment-form textarea,
        .rating-form input,
        .rating-form select {
            width: 100%;
            padding: 1rem;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            margin-bottom: 1rem;
            font-family: inherit;
            transition: var(--transition);
        }
        .comment-form textarea:focus,
        .rating-form input:focus,
        .rating-form select:focus {
            outline: none;
            border-color: var(--secondary-color);
            box-shadow: 0 0 0 3px rgba(197, 48, 48, 0.1);
        }
        .submit-btn {
            background: var(--secondary-color);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.7rem;
        }
        .submit-btn:hover {
            background: #9b2c2c;
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(197, 48, 48, 0.2);
        }
        .footer-links {
            background: var(--bg-light);
            padding: 3rem 0;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .web-links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
        }
        .web-link {
            background: white;
            padding: 1.2rem;
            border-radius: 8px;
            border-left: 4px solid var(--primary-color);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }
        .web-link a {
            color: var(--text-primary);
            font-weight: 500;
        }
        .site-footer {
            background: var(--bg-dark);
            color: white;
            padding: 3rem 0 2rem;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }
        .copyright {
            margin-top: 2rem;
            padding-top: 2rem;
            border-top: 1px solid #4a5568;
            width: 100%;
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .menu-toggle {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background: var(--bg-dark);
                padding: 1rem;
                transform: translateY(-100%);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
                z-index: 999;
            }
            .main-nav.active {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
            }
            .main-nav li {
                width: 100%;
            }
            .main-nav a {
                display: block;
                padding: 1rem;
                border-bottom: 1px solid #4a5568;
            }
            .article-header h1 {
                font-size: 2rem;
            }
            .meta-info {
                flex-direction: column;
                gap: 0.5rem;
            }
            .tier-grid {
                grid-template-columns: 1fr;
            }
        }