* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f9f9ff 0%, #f0f4ff 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a { color: #2a5baa; text-decoration: none; transition: all 0.3s ease; }
        a:hover { color: #d43f8c; text-decoration: underline; }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .visually-hidden { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
        .site-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;
            flex-wrap: wrap;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 800;
            color: #ffde59;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
            font-family: 'Comic Sans MS', cursive, sans-serif;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo a:hover { text-decoration: none; color: #fff; }
        .logo-icon { font-size: 2.5rem; }
        .breadcrumb {
            padding: 12px 0;
            background-color: #e9efff;
            font-size: 0.9rem;
            border-bottom: 1px solid #ccd8f0;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
        }
        .breadcrumb li { margin-right: 10px; }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 10px;
            color: #888;
        }
        .breadcrumb a { color: #555; }
        .main-nav { display: flex; align-items: center; }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .nav-links a {
            color: #d4e1ff;
            font-weight: 600;
            padding: 8px 5px;
            border-radius: 4px;
        }
        .nav-links a:hover,
        .nav-links a.active {
            background-color: rgba(255, 255, 255, 0.15);
            color: white;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .search-box {
            background: rgba(255,255,255,0.1);
            border-radius: 30px;
            padding: 8px 20px;
            display: flex;
            align-items: center;
            margin-left: 2rem;
        }
        .search-box input {
            background: transparent;
            border: none;
            color: white;
            outline: none;
            width: 200px;
            padding: 5px;
        }
        .search-box input::placeholder { color: #b8c9ff; }
        .search-box button {
            background: none;
            border: none;
            color: #ffde59;
            cursor: pointer;
            font-size: 1.1rem;
        }
        main { flex: 1; padding: 2rem 0; }
        .article-header { text-align: center; margin-bottom: 3rem; }
        .article-header h1 {
            font-size: 2.8rem;
            color: #1e3c72;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            color: #666;
            font-size: 0.95rem;
            margin-bottom: 1.5rem;
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .article-meta span { display: inline-flex; align-items: center; gap: 5px; }
        .article-hero {
            margin: 2.5rem auto;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            max-width: 900px;
        }
        .article-hero figcaption {
            padding: 12px;
            background: #f0f5ff;
            font-size: 0.9rem;
            color: #555;
            text-align: center;
            font-style: italic;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .content-grid { grid-template-columns: 1fr; }
        }
        .article-body { font-size: 1.1rem; }
        .article-body h2 {
            font-size: 2rem;
            color: #2a5baa;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 8px;
            border-bottom: 2px solid #e1e9ff;
        }
        .article-body h3 {
            font-size: 1.5rem;
            color: #d43f8c;
            margin: 2rem 0 1rem;
        }
        .article-body p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .article-body .highlight {
            background-color: #fff9e6;
            border-left: 5px solid #ffde59;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
            font-style: italic;
        }
        .article-body emoji { font-size: 1.2em; margin-right: 5px; }
        .sidebar {
            background: #f8fbff;
            border-radius: 12px;
            padding: 1.8rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar-widget { margin-bottom: 2.5rem; }
        .sidebar-widget h3 {
            color: #1e3c72;
            margin-bottom: 1.2rem;
            padding-bottom: 8px;
            border-bottom: 1px dashed #ccd8f0;
        }
        .sidebar-links { list-style: none; }
        .sidebar-links li { margin-bottom: 0.8rem; }
        .sidebar-links a { display: block; padding: 8px 12px; background: #edf3ff; border-radius: 6px; }
        .sidebar-links a:hover { background: #dbe5ff; }
        .interactive-module {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            margin: 3rem 0;
            box-shadow: 0 8px 25px rgba(0,0,0,0.08);
            border: 1px solid #e1e9ff;
        }
        .module-title {
            font-size: 1.8rem;
            color: #1e3c72;
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .module-title i { color: #d43f8c; }
        .form-group { margin-bottom: 1.5rem; }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #444;
        }
        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ccd8f0;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-control:focus {
            outline: none;
            border-color: #2a5baa;
            box-shadow: 0 0 0 3px rgba(42, 91, 170, 0.1);
        }
        .rating-stars {
            display: flex;
            gap: 10px;
            font-size: 2rem;
            color: #ddd;
            margin: 10px 0;
        }
        .rating-stars .star {
            cursor: pointer;
            transition: color 0.2s;
        }
        .rating-stars .star:hover,
        .rating-stars .star.active { color: #ffde59; }
        .btn-submit {
            background: linear-gradient(90deg, #2a5baa, #3a6bc5);
            color: white;
            border: none;
            padding: 14px 30px;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-submit:hover {
            background: linear-gradient(90deg, #1e3c72, #2a5baa);
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(42, 91, 170, 0.3);
        }
        .web-links-section {
            background: #eef4ff;
            padding: 2.5rem 0;
            margin-top: 3rem;
            border-top: 1px solid #ccd8f0;
            border-bottom: 1px solid #ccd8f0;
        }
        .web-links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.2rem;
        }
        .web-link {
            background: white;
            padding: 15px;
            border-radius: 8px;
            border-left: 4px solid #2a5baa;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
            transition: transform 0.3s;
        }
        .web-link:hover { transform: translateY(-5px); }
        .site-footer {
            background: #1a2c50;
            color: #b8c9ff;
            padding: 3rem 0 1.5rem;
            margin-top: auto;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-col h4 {
            color: #ffde59;
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 40px;
            height: 3px;
            background: #d43f8c;
        }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 0.8rem; }
        .footer-links a { color: #b8c9ff; }
        .footer-links a:hover { color: white; }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #2a3e66;
            font-size: 0.9rem;
            color: #8a9cc9;
        }
        @media (max-width: 768px) {
            .header-container { flex-direction: column; align-items: flex-start; }
            .logo { margin-bottom: 1rem; }
            .main-nav { width: 100%; justify-content: space-between; }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #2a5298;
                padding: 1rem;
                border-radius: 8px;
                margin-top: 1rem;
            }
            .nav-links.active { display: flex; }
            .hamburger { display: block; }
            .search-box { margin: 1rem 0 0; width: 100%; }
            .search-box input { width: 100%; }
            .article-header h1 { font-size: 2.2rem; }
            .content-grid { gap: 2rem; }
            .sidebar { position: static; }
        }