* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #0038a8; 
            --secondary: #ffcd00; 
            --accent: #dc143c; 
            --dark: #1a1a2e;
            --light: #f8f9fa;
            --gray: #6c757d;
            --transition: all 0.3s ease;
            --shadow: 0 5px 15px rgba(0, 56, 168, 0.1);
            --border-radius: 10px;
        }
        body {
            background-color: var(--light);
            color: var(--dark);
            line-height: 1.6;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary), #00267a);
            color: white;
            padding: 1.5rem 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: 2.2rem;
            font-weight: 800;
            letter-spacing: -1px;
            color: var(--secondary);
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .logo span {
            color: white;
        }
        .logo:hover {
            transform: scale(1.03);
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .desktop-nav a {
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
            position: relative;
        }
        .desktop-nav a:hover,
        .desktop-nav a.active {
            background-color: rgba(255, 255, 255, 0.15);
            color: var(--secondary);
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 3px;
            background: var(--secondary);
            transition: var(--transition);
        }
        .desktop-nav a:hover::after {
            width: 80%;
        }
        .menu-toggle {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 6px;
            padding: 10px;
        }
        .menu-toggle span {
            width: 30px;
            height: 3px;
            background-color: white;
            border-radius: 3px;
            transition: var(--transition);
        }
        .mobile-nav {
            position: fixed;
            top: 0;
            right: -100%;
            height: 100vh;
            width: 300px;
            background: var(--primary);
            padding: 2rem;
            transition: right 0.4s ease;
            z-index: 9999;
            overflow-y: auto;
            box-shadow: -5px 0 20px rgba(0,0,0,0.2);
        }
        .mobile-nav.active {
            right: 0;
        }
        .mobile-nav ul {
            list-style: none;
            margin-top: 3rem;
        }
        .mobile-nav li {
            margin-bottom: 1.5rem;
        }
        .mobile-nav a {
            font-size: 1.3rem;
            font-weight: 600;
            display: block;
            padding: 0.8rem;
            border-radius: var(--border-radius);
            border-left: 4px solid transparent;
        }
        .mobile-nav a:hover,
        .mobile-nav a.active {
            background-color: rgba(255, 255, 255, 0.1);
            border-left-color: var(--secondary);
            color: var(--secondary);
        }
        .close-menu {
            position: absolute;
            top: 20px;
            right: 20px;
            font-size: 2rem;
            cursor: pointer;
            color: white;
        }
        .overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.7);
            z-index: 9998;
        }
        .overlay.active {
            display: block;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 1rem;
            border-radius: var(--border-radius);
            margin: 1.5rem 0;
            font-size: 0.95rem;
        }
        .breadcrumb a {
            color: var(--primary);
            font-weight: 500;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb i {
            margin: 0 10px;
            color: var(--gray);
        }
        main {
            padding: 2rem 0;
            min-height: 70vh;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        article {
            background: white;
            padding: 2.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        h1 {
            color: var(--primary);
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid var(--secondary);
            padding-bottom: 0.5rem;
        }
        h2 {
            color: var(--primary);
            font-size: 2rem;
            margin: 2.5rem 0 1.2rem;
            padding-left: 10px;
            border-left: 5px solid var(--accent);
        }
        h3 {
            color: var(--dark);
            font-size: 1.5rem;
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.3rem;
            color: var(--primary);
            font-weight: 600;
            background: linear-gradient(to right, rgba(0, 56, 168, 0.05), transparent);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            border-left: 5px solid var(--secondary);
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #fff9e6;
            border: 2px dashed var(--secondary);
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 2rem 0;
        }
        .highlight h3 {
            color: var(--primary);
            margin-top: 0;
        }
        emoji {
            font-size: 1.5rem;
            margin-right: 8px;
        }
        b, strong {
            color: var(--primary);
        }
        .feature-img {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: var(--border-radius);
            margin: 2rem auto;
            display: block;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            border: 5px solid white;
            transition: var(--transition);
        }
        .feature-img:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.2);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            margin-top: 0.5rem;
            margin-bottom: 2rem;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.8rem;
        }
        blockquote {
            border-left: 5px solid var(--accent);
            padding-left: 2rem;
            margin: 2.5rem 0;
            font-style: italic;
            color: var(--dark);
            background: linear-gradient(to right, rgba(220, 20, 60, 0.05), transparent);
            padding: 1.5rem 2rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .calculator-section {
            background: linear-gradient(145deg, #f0f5ff, #e6eeff);
            padding: 2.5rem;
            border-radius: var(--border-radius);
            margin: 3rem 0;
            border: 2px solid var(--primary);
        }
        .calculator-section h2 {
            text-align: center;
            border: none;
            padding-left: 0;
        }
        .calculator-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin-top: 2rem;
        }
        .calc-input {
            display: flex;
            flex-direction: column;
        }
        .calc-input label {
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: var(--primary);
        }
        .calc-input select,
        .calc-input input {
            padding: 12px 15px;
            border: 2px solid #ccc;
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .calc-input select:focus,
        .calc-input input:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 56, 168, 0.2);
        }
        .calc-btn {
            background: linear-gradient(to right, var(--primary), #0046d4);
            color: white;
            border: none;
            padding: 15px 30px;
            font-size: 1.2rem;
            font-weight: 700;
            border-radius: var(--border-radius);
            cursor: pointer;
            transition: var(--transition);
            grid-column: 1 / -1;
            margin-top: 1rem;
        }
        .calc-btn:hover {
            background: linear-gradient(to right, #00267a, var(--primary));
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(0, 56, 168, 0.3);
        }
        .result-box {
            background: white;
            padding: 2rem;
            border-radius: var(--border-radius);
            margin-top: 2rem;
            border-left: 6px solid var(--secondary);
            box-shadow: var(--shadow);
            display: none;
        }
        .result-box.active {
            display: block;
            animation: fadeIn 0.5s ease;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .interactive-section {
            background-color: white;
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 3rem 0;
            box-shadow: var(--shadow);
        }
        .interactive-section h2 {
            text-align: center;
            border: none;
            padding-left: 0;
            margin-bottom: 2rem;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        .feature-card {
            background: var(--light);
            padding: 1.8rem;
            border-radius: var(--border-radius);
            border-top: 5px solid var(--primary);
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .feature-card i {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 1rem;
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            padding: 1.8rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            color: var(--primary);
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #eee;
        }
        .search-widget form {
            display: flex;
        }
        .search-widget input {
            flex: 1;
            padding: 12px 15px;
            border: 2px solid #ddd;
            border-right: none;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
        }
        .search-widget button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-widget button:hover {
            background: #00267a;
        }
        .rating-widget .stars {
            display: flex;
            gap: 10px;
            margin-bottom: 1.5rem;
        }
        .rating-widget .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-widget .star:hover,
        .rating-widget .star.active {
            color: #ffcd00;
        }
        .rating-widget form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .rating-widget textarea {
            padding: 12px;
            border: 2px solid #ddd;
            border-radius: var(--border-radius);
            font-family: inherit;
            resize: vertical;
            min-height: 100px;
        }
        .rating-widget button {
            background: var(--accent);
            color: white;
            border: none;
            padding: 12px;
            border-radius: var(--border-radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-widget button:hover {
            background: #b01030;
        }
        .comments-widget .comment {
            border-bottom: 1px solid #eee;
            padding: 1.2rem 0;
        }
        .comment:last-child {
            border-bottom: none;
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 0.5rem;
            font-size: 0.9rem;
            color: var(--gray);
        }
        .comment-user {
            font-weight: 600;
            color: var(--primary);
        }
        .comment-form textarea {
            width: 100%;
            padding: 12px;
            border: 2px solid #ddd;
            border-radius: var(--border-radius);
            margin-bottom: 1rem;
            font-family: inherit;
            resize: vertical;
            min-height: 100px;
        }
        .comment-form button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .comment-form button:hover {
            background: #00267a;
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            margin: 3rem 0;
        }
        .web-link {
            background: linear-gradient(135deg, var(--primary), #0046d4);
            color: white;
            padding: 1.2rem;
            border-radius: var(--border-radius);
            text-align: center;
            font-weight: 600;
            transition: var(--transition);
        }
        .web-link:hover {
            background: linear-gradient(135deg, #00267a, var(--primary));
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(0, 56, 168, 0.3);
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            color: var(--secondary);
            margin-bottom: 1rem;
        }
        .footer-links h4 {
            color: var(--secondary);
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-links ul {
            list-style: none;
            margin-left: 0;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #ccc;
        }
        .footer-links a:hover {
            color: var(--secondary);
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #aaa;
            font-size: 0.95rem;
        }
        @media (max-width: 992px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
            aside {
                grid-row: 1;
            }
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .desktop-nav {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .header-container {
                padding: 0 10px;
            }
            article,
            .calculator-section,
            .interactive-section {
                padding: 1.5rem;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 15px;
            }
            .logo {
                font-size: 1.8rem;
            }
            .calculator-grid {
                grid-template-columns: 1fr;
            }
            .breadcrumb {
                font-size: 0.85rem;
            }
        }