* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f8f9fa;
            max-width: 100%;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            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;
        }
        .site-header {
            background: linear-gradient(135deg, #0a3d62 0%, #1e5799 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;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: #f9ca24;
        }
        .my-logo span {
            background: linear-gradient(to right, #f9ca24, #ffbe76);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            font-style: italic;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #dff9fb;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
            transition: color 0.3s;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: #f9ca24;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: #f9ca24;
            transition: width 0.3s;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin: 0 10px;
            color: #6c757d;
        }
        .breadcrumb a {
            color: #0a3d62;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        .article-header {
            margin-bottom: 2.5rem;
            border-bottom: 3px solid #f9ca24;
            padding-bottom: 1.5rem;
        }
        h1 {
            font-size: 2.8rem;
            color: #0a3d62;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            color: #6c757d;
            font-size: 0.95rem;
            margin-top: 1rem;
        }
        .article-meta i {
            margin-right: 5px;
            color: #0a3d62;
        }
        h2 {
            font-size: 2rem;
            color: #1a5276;
            margin: 2.5rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #d6eaf8;
        }
        h3 {
            font-size: 1.6rem;
            color: #2874a6;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #3498db;
            margin: 1.8rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 500;
            color: #2c3e50;
            background-color: #f8f9fa;
            padding: 1.5rem;
            border-left: 5px solid #f9ca24;
            border-radius: 0 8px 8px 0;
            margin: 2rem 0;
        }
        strong {
            color: #0a3d62;
            font-weight: 700;
        }
        em {
            color: #e74c3c;
            font-style: italic;
        }
        .highlight-box {
            background: linear-gradient(120deg, #e3f2fd, #f3e5f5);
            border: 1px solid #bbdefb;
            border-radius: 10px;
            padding: 2rem;
            margin: 2.5rem 0;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
        }
        .insight {
            background-color: #fffde7;
            border-left: 5px solid #fdcb6e;
            padding: 1rem 1.5rem;
            margin: 1.8rem 0;
        }
        .insight i {
            color: #e17055;
            margin-right: 10px;
        }
        a.content-link {
            color: #0984e3;
            text-decoration: none;
            border-bottom: 1px dotted #0984e3;
            transition: all 0.3s;
        }
        a.content-link:hover {
            color: #d63031;
            border-bottom: 1px solid #d63031;
            background-color: #ffeaa7;
        }
        .featured-image {
            margin: 3rem auto;
            text-align: center;
        }
        .featured-image img {
            border-radius: 12px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
            transition: transform 0.5s;
        }
        .featured-image img:hover {
            transform: scale(1.02);
        }
        .fig-caption {
            font-style: italic;
            color: #636e72;
            margin-top: 0.8rem;
            font-size: 0.95rem;
        }
        .group-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
            border-radius: 10px;
            overflow: hidden;
        }
        .group-table th {
            background-color: #0a3d62;
            color: white;
            padding: 1rem;
            text-align: left;
        }
        .group-table td {
            padding: 1rem;
            border-bottom: 1px solid #dfe6e9;
        }
        .group-table tr:nth-child(even) {
            background-color: #f8f9fa;
        }
        .group-table tr:hover {
            background-color: #e3f2fd;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            padding: 1.8rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        .sidebar-widget h3 {
            font-size: 1.4rem;
            color: #0a3d62;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #f9ca24;
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 0.8rem 1rem;
            border: 2px solid #ddd;
            border-right: none;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .search-form input:focus {
            outline: none;
            border-color: #0a3d62;
        }
        .search-form button {
            background-color: #0a3d62;
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-form button:hover {
            background-color: #1e5799;
        }
        .comment-section, .rating-section {
            margin-top: 3rem;
        }
        .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
            margin-top: 1.5rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        .form-group label {
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #2d3436;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 0.8rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: #0a3d62;
        }
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }
        .submit-btn {
            background: linear-gradient(135deg, #0a3d62, #1e5799);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s;
            align-self: flex-start;
        }
        .submit-btn:hover {
            background: linear-gradient(135deg, #1e5799, #0a3d62);
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(10, 61, 98, 0.2);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 5px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.3s;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: #f9ca24;
        }
        .site-footer {
            background-color: #2c3e50;
            color: #ecf0f1;
            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-widget h4 {
            color: #f9ca24;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #bdc3c7;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-links a:hover {
            color: #f9ca24;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: #34495e;
            padding: 1.5rem;
            border-radius: 8px;
            margin-top: 1rem;
        }
        friend-link a {
            color: #1abc9c;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #34495e;
            font-size: 0.9rem;
            color: #95a5a6;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: #0a3d62;
                padding: 1rem;
                box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
            }
            .main-nav.active ul {
                display: flex;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            article {
                padding: 1.5rem;
            }
            .main-nav a::after {
                display: none;
            }
        }