:root {
            --primary: #1a5f7a;
            --secondary: #57c5b6;
            --accent: #f8b400;
            --light: #f5f7fa;
            --dark: #002b36;
            --gray: #6c757d;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Nirmala UI', sans-serif;
        }
        body {
            background-color: #f0f8ff;
            color: #333;
            line-height: 1.7;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            letter-spacing: 1px;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
        }
        .search-form {
            display: flex;
            width: 40%;
            min-width: 250px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 15px;
            border: none;
            border-radius: 30px 0 0 30px;
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--accent);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 30px 30px 0;
            cursor: pointer;
            font-weight: bold;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: #e09c00;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
        }
        nav ul {
            display: flex;
            list-style: none;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 10px;
            padding: 5px;
        }
        nav li {
            margin: 0 5px;
        }
        nav a {
            color: white;
            text-decoration: none;
            padding: 10px 20px;
            border-radius: 8px;
            font-weight: 600;
            transition: var(--transition);
            display: block;
        }
        nav a:hover, nav a.active {
            background-color: white;
            color: var(--primary);
        }
        .breadcrumb {
            padding: 15px 0;
            font-size: 0.9rem;
            color: var(--light);
        }
        .breadcrumb a {
            color: var(--light);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            padding: 40px 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        article {
            background: white;
            border-radius: 15px;
            padding: 40px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        h1 {
            color: var(--primary);
            font-size: 2.8rem;
            margin-bottom: 20px;
            line-height: 1.2;
            border-bottom: 3px solid var(--accent);
            padding-bottom: 15px;
        }
        h2 {
            color: var(--secondary);
            font-size: 2rem;
            margin: 35px 0 20px;
            padding-left: 15px;
            border-left: 5px solid var(--secondary);
        }
        h3 {
            color: var(--primary);
            font-size: 1.5rem;
            margin: 25px 0 15px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
            font-size: 1.1rem;
        }
        .highlight {
            background-color: #fff9e6;
            border-left: 4px solid var(--accent);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 10px 10px 0;
        }
        .feature-img {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 10px;
            margin: 30px auto;
            display: block;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
            transition: transform 0.5s ease;
        }
        .feature-img:hover {
            transform: scale(1.02);
        }
        .quote {
            font-style: italic;
            background: linear-gradient(to right, #f8f9fa, #e9f7fe);
            padding: 25px;
            border-radius: 10px;
            margin: 30px 0;
            border-left: 5px solid var(--secondary);
            font-size: 1.2rem;
            color: var(--dark);
        }
        .interaction-section {
            background: #f8f9fa;
            padding: 30px;
            border-radius: 15px;
            margin-top: 50px;
            border: 1px solid #dee2e6;
        }
        .interaction-section h2 {
            text-align: center;
            border: none;
            padding-left: 0;
            color: var(--primary);
        }
        .rating-form, .comment-form {
            margin-top: 30px;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin: 20px 0;
        }
        .stars i {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .stars i:hover, .stars i.active {
            color: #ffc107;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--dark);
        }
        .form-group input, .form-group textarea, .form-group select {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus, .form-group textarea:focus {
            border-color: var(--secondary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(87, 197, 182, 0.2);
        }
        .btn {
            background: linear-gradient(to right, var(--primary), var(--secondary));
            color: white;
            border: none;
            padding: 14px 30px;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-block;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(0, 0, 0, 0.1);
        }
        aside {
            background: white;
            border-radius: 15px;
            padding: 25px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            height: fit-content;
            position: sticky;
            top: 120px;
        }
        aside h3 {
            color: var(--primary);
            border-bottom: 2px solid var(--accent);
            padding-bottom: 10px;
            margin-bottom: 20px;
        }
        .related-links {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 1px dashed #eee;
        }
        .related-links a {
            color: var(--dark);
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
        }
        .related-links a:hover {
            color: var(--primary);
            padding-left: 5px;
        }
        .related-links i {
            margin-right: 10px;
            color: var(--secondary);
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
            margin: 50px 0 30px;
        }
        .web-link {
            background: white;
            border-radius: 10px;
            padding: 20px;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateY(-5px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        .web-link a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            display: block;
            font-size: 1.1rem;
        }
        .web-link a:hover {
            text-decoration: underline;
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 40px 0 20px;
            margin-top: 60px;
        }
        .footer-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            padding-bottom: 30px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
            }
            h1 {
                font-size: 2.4rem;
            }
        }
        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
            }
            .search-form {
                order: 3;
                width: 100%;
                margin-top: 15px;
            }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--primary);
                position: absolute;
                top: 100%;
                left: 0;
                border-radius: 0;
                padding: 0;
            }
            nav ul.active {
                display: flex;
            }
            nav li {
                margin: 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }
            nav a {
                padding: 15px 20px;
                border-radius: 0;
            }
            .hamburger {
                display: block;
            }
            article {
                padding: 25px;
            }
            .footer-content {
                flex-direction: column;
                text-align: center;
                gap: 20px;
            }
        }