* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            min-height: 100vh;
        }
        a {
            text-decoration: none;
            color: #1a73e8;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #0d47a1;
        }
        ul {
            list-style: none;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        header {
            background: linear-gradient(90deg, #1e3c72 0%, #2a5298 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            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;
            color: white;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .logo span {
            color: #ffcc00;
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        .nav-desktop a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: background 0.3s ease;
        }
        .nav-desktop a:hover {
            background: rgba(255, 255, 255, 0.2);
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: #2a5298;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: white;
            padding: 0.75rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .nav-mobile a:last-child {
            border-bottom: none;
        }
        .breadcrumb {
            background: #e8f0fe;
            padding: 0.75rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #5f6368;
        }
        .breadcrumb a:hover {
            color: #1a73e8;
        }
        .breadcrumb span {
            color: #1a73e8;
            font-weight: 600;
        }
        main {
            padding: 2rem 0;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
        }
        article {
            background: white;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
        }
        aside {
            background: white;
            padding: 1.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
            align-self: start;
        }
        h1 {
            font-size: 2.5rem;
            color: #1e3c72;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        h2 {
            font-size: 1.8rem;
            color: #2a5298;
            margin: 2rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #ffcc00;
        }
        h3 {
            font-size: 1.4rem;
            color: #1a73e8;
            margin: 1.5rem 0 0.75rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .highlight {
            background: #fff9c4;
            padding: 1rem;
            border-left: 4px solid #ffcc00;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.5rem;
        }
        strong {
            color: #d84315;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            margin: 1.5rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .figure-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: -1rem;
            margin-bottom: 1.5rem;
        }
        .search-box {
            background: #f1f8ff;
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2rem 0;
        }
        .search-box form {
            display: flex;
            gap: 0.5rem;
        }
        .search-box input {
            flex: 1;
            padding: 0.75rem;
            border: 2px solid #1a73e8;
            border-radius: 4px;
            font-size: 1rem;
        }
        .search-box button {
            background: #1a73e8;
            color: white;
            border: none;
            padding: 0.75rem 1.5rem;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.3s ease;
        }
        .search-box button:hover {
            background: #0d47a1;
        }
        .interaction {
            background: #e8f5e9;
            padding: 2rem;
            border-radius: 8px;
            margin: 2rem 0;
        }
        .interaction h3 {
            color: #2e7d32;
        }
        .interaction form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            margin-top: 1rem;
        }
        .interaction input, .interaction textarea, .interaction select {
            padding: 0.75rem;
            border: 1px solid #ccc;
            border-radius: 4px;
            font-size: 1rem;
        }
        .interaction textarea {
            min-height: 100px;
            resize: vertical;
        }
        .interaction button {
            align-self: flex-start;
            background: #2e7d32;
            color: white;
            border: none;
            padding: 0.75rem 1.5rem;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.3s ease;
        }
        .interaction button:hover {
            background: #1b5e20;
        }
        .rating {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin: 1rem 0;
        }
        .rating-stars {
            color: #ffcc00;
            font-size: 1.5rem;
        }
        .sidebar-section {
            margin-bottom: 2rem;
        }
        .sidebar-section h3 {
            font-size: 1.2rem;
            color: #1e3c72;
            margin-bottom: 1rem;
        }
        .sidebar-list li {
            padding: 0.5rem 0;
            border-bottom: 1px dashed #ddd;
        }
        .sidebar-list li:last-child {
            border-bottom: none;
        }
        .ad-placeholder {
            background: linear-gradient(135deg, #ffcc00, #ff9800);
            color: white;
            text-align: center;
            padding: 2rem 1rem;
            border-radius: 8px;
            font-weight: bold;
        }
        .web-links {
            background: #1e3c72;
            padding: 2rem 0;
            margin-top: 2rem;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
        }
        .web-link {
            background: rgba(255, 255, 255, 0.1);
            padding: 1rem;
            border-radius: 6px;
            text-align: center;
        }
        .web-link a {
            color: #ffcc00;
            font-weight: 600;
        }
        .web-link a:hover {
            color: white;
        }
        footer {
            background: #0d1b3e;
            color: white;
            padding: 2rem 0;
            text-align: center;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1rem;
        }
        .social-links {
            display: flex;
            gap: 1.5rem;
            font-size: 1.5rem;
        }
        .social-links a {
            color: white;
            transition: color 0.3s ease;
        }
        .social-links a:hover {
            color: #ffcc00;
        }
        .copyright {
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .web-links-container {
                grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            }
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .header-container, .breadcrumb .container, .content-grid, .web-links-container, .footer-container {
                padding: 0 15px;
            }
            article, aside {
                padding: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .search-box form {
                flex-direction: column;
            }
            .search-box button {
                width: 100%;
            }
            .interaction form {
                width: 100%;
            }
        }
        .nav-desktop a:hover, .nav-mobile a:hover, .web-link:hover, .sidebar-list li:hover {
            transform: translateY(-2px);
            transition: transform 0.2s ease;
        }
        .rating-stars i:hover {
            transform: scale(1.2);
            transition: transform 0.2s ease;
        }
        button:hover, .interaction button:hover {
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
        }