:root {
            --primary-color: #1a365d;
            --secondary-color: #2d3748;
            --accent-color: #e53e3e;
            --accent-hover: #c53030;
            --light-bg: #f7fafc;
            --text-color: #2d3748;
            --text-light: #718096;
            --border-color: #e2e8f0;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --transition: all 0.3s ease;
            --max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            line-height: 1.7;
            color: var(--text-color);
            background-color: var(--light-bg);
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        ul {
            list-style: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .site-header {
            background-color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-color);
            background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-desktop a {
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: var(--accent-color);
            transition: var(--transition);
        }
        .nav-desktop a:hover::after,
        .nav-desktop a.active::after {
            width: 100%;
        }
        .nav-desktop a:hover {
            color: var(--accent-color);
        }
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: var(--primary-color);
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger-btn {
                display: block;
            }
        }
        .mobile-nav {
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background-color: white;
            box-shadow: var(--shadow);
            padding: 1.5rem;
            transform: translateY(-100%);
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            z-index: 999;
        }
        .mobile-nav.active {
            transform: translateY(0);
            opacity: 1;
            visibility: visible;
        }
        .mobile-nav ul {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .mobile-nav a {
            display: block;
            padding: 0.8rem 0;
            border-bottom: 1px solid var(--border-color);
            font-weight: 600;
        }
        .mobile-nav a:hover {
            color: var(--accent-color);
            padding-left: 0.5rem;
        }
        .breadcrumb {
            background-color: var(--light-bg);
            padding: 1rem 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.9rem;
        }
        .breadcrumb .container {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .breadcrumb a:hover {
            color: var(--accent-color);
            text-decoration: underline;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 3rem 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background-color: white;
            border-radius: 8px;
            padding: 3rem;
            box-shadow: var(--shadow);
        }
        @media (max-width: 768px) {
            .article-content {
                padding: 2rem 1.5rem;
            }
        }
        .article-header {
            margin-bottom: 2.5rem;
            border-bottom: 2px solid var(--border-color);
            padding-bottom: 1.5rem;
        }
        .article-header h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            margin-bottom: 1rem;
            color: var(--primary-color);
        }
        @media (max-width: 768px) {
            .article-header h1 {
                font-size: 2.2rem;
            }
        }
        .meta-info {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            color: var(--text-light);
            font-size: 0.95rem;
        }
        .meta-info i {
            margin-right: 0.3rem;
        }
        .article-img {
            margin: 2.5rem auto;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        }
        .article-img figcaption {
            text-align: center;
            font-style: italic;
            color: var(--text-light);
            padding: 0.5rem;
            font-size: 0.9rem;
        }
        .article-body h2 {
            font-size: 2rem;
            margin: 3rem 0 1.5rem;
            color: var(--primary-color);
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--border-color);
        }
        .article-body h3 {
            font-size: 1.6rem;
            margin: 2.5rem 0 1rem;
            color: var(--secondary-color);
        }
        .article-body h4 {
            font-size: 1.3rem;
            margin: 2rem 0 1rem;
            color: var(--secondary-color);
        }
        .article-body p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .article-body emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        .highlight {
            background-color: #fffacd;
            padding: 0.2rem 0.4rem;
            border-radius: 3px;
            font-weight: 600;
        }
        .internal-link {
            color: var(--accent-color);
            font-weight: 600;
            border-bottom: 1px dotted var(--accent-color);
        }
        .internal-link:hover {
            color: var(--accent-hover);
            border-bottom-style: solid;
        }
        .quote-box {
            border-left: 4px solid var(--accent-color);
            padding-left: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            color: var(--text-light);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: linear-gradient(135deg, var(--light-bg), white);
            padding: 1.5rem;
            border-radius: 8px;
            box-shadow: var(--shadow);
            text-align: center;
            border-top: 4px solid var(--accent-color);
        }
        .stat-card h4 {
            margin-top: 0;
            color: var(--accent-color);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        @media (max-width: 992px) {
            .sidebar {
                order: -1;
            }
        }
        .widget {
            background-color: white;
            border-radius: 8px;
            padding: 2rem;
            box-shadow: var(--shadow);
        }
        .widget-title {
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--border-color);
            color: var(--primary-color);
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 0.8rem 1rem;
            border: 1px solid var(--border-color);
            border-radius: 4px 0 0 4px;
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--accent-color);
            color: white;
            border: none;
            padding: 0 1.2rem;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: var(--accent-hover);
        }
        .rating-widget form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .star-rating {
            display: flex;
            justify-content: center;
            gap: 0.3rem;
            font-size: 1.8rem;
            color: #d1d5db;
            margin: 0.5rem 0;
        }
        .star-rating label {
            cursor: pointer;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label:hover,
        .star-rating label:hover ~ label,
        .star-rating input:checked ~ label {
            color: #fbbf24;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .form-group input,
        .form-group textarea {
            padding: 0.8rem;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            font-family: inherit;
            font-size: 1rem;
        }
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }
        .submit-btn {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0.9rem;
            border-radius: 4px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .submit-btn:hover {
            background-color: var(--secondary-color);
        }
        .related-links ul {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .related-links li {
            padding-bottom: 0.8rem;
            border-bottom: 1px solid var(--border-color);
        }
        .related-links a {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .related-links a:hover {
            color: var(--accent-color);
        }
        .site-footer {
            background-color: var(--primary-color);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 1rem;
            color: white;
        }
        .footer-about p {
            color: #cbd5e0;
            margin-bottom: 1.5rem;
        }
        friend-link {
            display: block;
            background-color: rgba(255, 255, 255, 0.05);
            padding: 1rem;
            border-radius: 4px;
            margin-bottom: 1rem;
            border-left: 3px solid var(--accent-color);
        }
        friend-link a {
            color: #90cdf4;
        }
        friend-link a:hover {
            color: white;
            text-decoration: underline;
        }
        .copyright {
            grid-column: 1 / -1;
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #4a5568;
            color: #a0aec0;
            font-size: 0.9rem;
        }
        .text-center {
            text-align: center;
        }
        .mb-3 {
            margin-bottom: 3rem;
        }
        .mt-3 {
            margin-top: 3rem;
        }
        .icon {
            margin-right: 0.5rem;
        }