:root {
            --primary-color: #1a237e;
            --secondary-color: #ff9800;
            --accent-color: #4caf50;
            --text-dark: #333;
            --text-light: #f5f5f5;
            --bg-light: #f8f9fa;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --border-radius: 8px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: var(--bg-light);
            color: var(--text-dark);
            line-height: 1.7;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary-color), #283593);
            color: var(--text-light);
            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: 2rem;
            font-weight: 800;
            color: var(--secondary-color);
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
            transition: var(--transition);
        }
        .logo:hover {
            color: #ffc107;
            transform: scale(1.05);
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        .nav-desktop a {
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .nav-desktop a:hover {
            background-color: rgba(255,255,255,0.2);
            color: var(--secondary-color);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background-color: var(--primary-color);
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: var(--shadow);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            padding: 1rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .nav-mobile a:hover {
            background-color: rgba(255,255,255,0.1);
        }
        .breadcrumb {
            background-color: #e8eaf6;
            padding: 1rem;
            border-radius: var(--border-radius);
            margin: 1rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--primary-color);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .search-container {
            background-color: white;
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            box-shadow: var(--shadow);
        }
        .search-form {
            display: flex;
            gap: 1rem;
        }
        .search-input {
            flex: 1;
            padding: 1rem;
            border: 2px solid #ddd;
            border-radius: var(--border-radius);
            font-size: 1rem;
        }
        .search-input:focus {
            border-color: var(--secondary-color);
            outline: none;
        }
        .search-btn {
            background-color: var(--secondary-color);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-btn:hover {
            background-color: #e68900;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
            margin: 2rem 0;
        }
        article {
            background-color: white;
            padding: 2rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        article h1 {
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            font-size: 2.5rem;
            border-bottom: 3px solid var(--secondary-color);
            padding-bottom: 0.5rem;
        }
        article h2 {
            color: var(--primary-color);
            margin: 2rem 0 1rem;
            padding-left: 1rem;
            border-left: 5px solid var(--accent-color);
        }
        article h3 {
            color: #555;
            margin: 1.5rem 0 1rem;
        }
        article p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        article strong {
            color: var(--primary-color);
        }
        .tier-list {
            display: grid;
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .tier-card {
            background: linear-gradient(to right, #f5f5f5, #fff);
            border-left: 6px solid var(--secondary-color);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            box-shadow: 0 2px 8px rgba(0,0,0,0.08);
            transition: var(--transition);
        }
        .tier-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 6px 16px rgba(0,0,0,0.15);
        }
        .tier-card.S {
            border-left-color: #ff4081;
        }
        .tier-card.A {
            border-left-color: #ff9800;
        }
        .tier-card.B {
            border-left-color: #4caf50;
        }
        .tier-card.C {
            border-left-color: #2196f3;
        }
        .hero-img {
            width: 100%;
            max-height: 400px;
            object-fit: cover;
            border-radius: var(--border-radius);
            margin: 1.5rem 0;
            border: 3px solid var(--secondary-color);
        }
        aside {
            background-color: white;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            height: fit-content;
        }
        aside h3 {
            color: var(--primary-color);
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #eee;
        }
        .quick-nav {
            list-style: none;
        }
        .quick-nav li {
            margin-bottom: 0.8rem;
        }
        .quick-nav a {
            display: block;
            padding: 0.8rem;
            background-color: #f5f5f5;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .quick-nav a:hover {
            background-color: var(--primary-color);
            color: white;
        }
        .rating-section, .comment-section {
            background-color: white;
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            box-shadow: var(--shadow);
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            margin-top: 1.5rem;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
        }
        .stars .active {
            color: #ffc107;
        }
        textarea, input[type="text"], input[type="email"] {
            padding: 1rem;
            border: 2px solid #ddd;
            border-radius: var(--border-radius);
            font-size: 1rem;
        }
        textarea:focus, input:focus {
            border-color: var(--secondary-color);
            outline: none;
        }
        .submit-btn {
            background-color: var(--accent-color);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            align-self: flex-start;
        }
        .submit-btn:hover {
            background-color: #3d8b40;
        }
        .footer-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 1rem;
            margin: 3rem 0 2rem;
        }
        .web-link {
            background-color: #e3f2fd;
            padding: 1rem;
            border-radius: var(--border-radius);
            text-align: center;
            transition: var(--transition);
        }
        .web-link:hover {
            background-color: #bbdefb;
            transform: translateY(-3px);
        }
        footer {
            background-color: var(--primary-color);
            color: var(--text-light);
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .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 rgba(255,255,255,0.2);
            width: 100%;
            font-size: 0.9rem;
            opacity: 0.8;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
            }
        }
        @media (max-width: 768px) {
            .search-form {
                flex-direction: column;
            }
            .footer-links {
                grid-template-columns: repeat(2, 1fr);
            }
            article h1 {
                font-size: 2rem;
            }
        }
        @media (max-width: 480px) {
            .footer-links {
                grid-template-columns: 1fr;
            }
            .container {
                padding: 0 15px;
            }
        }