:root {
            --primary-color: #1e3a8a;
            --secondary-color: #dc2626;
            --accent-color: #fbbf24;
            --light-color: #f8fafc;
            --dark-color: #0f172a;
            --text-color: #334155;
            --gray-light: #cbd5e1;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
            --border-radius: 8px;
            --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: #ffffff;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary-color), #1e40af);
            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: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -0.5px;
        }
        .my-logo i {
            color: var(--accent-color);
        }
        .my-logo span {
            background: linear-gradient(to right, var(--accent-color), #f59e0b);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1rem;
            padding: 0.5rem 0;
            position: relative;
            transition: var(--transition);
        }
        nav a:hover {
            color: var(--accent-color);
        }
        nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--accent-color);
            transition: width 0.3s ease;
        }
        nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background-color: var(--primary-color);
            padding: 1rem;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            box-shadow: var(--shadow);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            color: white;
            padding: 0.8rem 1rem;
            text-decoration: none;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .mobile-nav a:last-child {
            border-bottom: none;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: var(--light-color);
            font-size: 0.9rem;
            color: var(--text-color);
            border-bottom: 1px solid var(--gray-light);
        }
        .breadcrumb a {
            color: var(--primary-color);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            margin: 0 5px;
            color: var(--gray-light);
        }
        .hero {
            background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1646487339823-67a3c16e7b2a?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            text-align: center;
            padding: 4rem 1rem;
            margin-bottom: 3rem;
            border-radius: var(--border-radius);
        }
        .hero h1 {
            font-size: clamp(2.5rem, 5vw, 4rem);
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 2rem;
            opacity: 0.9;
        }
        .search-form {
            max-width: 600px;
            margin: 2rem auto 0;
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .search-form input {
            flex: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--secondary-color);
            color: white;
            border: none;
            padding: 0 2rem;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: #b91c1c;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        .content {
            grid-column: 1;
        }
        aside {
            grid-column: 2;
        }
        article {
            margin-bottom: 3rem;
        }
        h1, h2, h3, h4 {
            color: var(--dark-color);
            line-height: 1.3;
            margin-top: 2rem;
            margin-bottom: 1rem;
        }
        h1 {
            font-size: 2.8rem;
            border-bottom: 3px solid var(--accent-color);
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2.2rem;
            color: var(--primary-color);
            padding-top: 1rem;
        }
        h3 {
            font-size: 1.8rem;
            color: #1e40af;
        }
        h4 {
            font-size: 1.4rem;
            color: #374151;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            hyphens: auto;
        }
        strong {
            color: var(--primary-color);
            font-weight: 700;
        }
        em {
            color: var(--secondary-color);
            font-style: italic;
        }
        a.article-link {
            color: var(--secondary-color);
            text-decoration: none;
            font-weight: 600;
            border-bottom: 1px dotted var(--secondary-color);
            transition: var(--transition);
        }
        a.article-link:hover {
            color: var(--primary-color);
            border-bottom-style: solid;
        }
        .highlight-box {
            background-color: var(--light-color);
            border-left: 4px solid var(--accent-color);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .image-container {
            margin: 2.5rem 0;
            text-align: center;
        }
        .image-container img {
            max-width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            transition: transform 0.5s ease;
        }
        .image-container img:hover {
            transform: scale(1.02);
        }
        .image-caption {
            font-style: italic;
            color: var(--text-color);
            margin-top: 0.5rem;
            font-size: 0.9rem;
            opacity: 0.8;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: white;
            border-radius: var(--border-radius);
            padding: 1.5rem;
            box-shadow: var(--shadow);
            text-align: center;
            border-top: 4px solid var(--primary-color);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary-color);
            display: block;
            line-height: 1;
        }
        .stat-label {
            font-size: 1rem;
            color: var(--text-color);
            margin-top: 0.5rem;
        }
        blockquote {
            font-size: 1.3rem;
            font-style: italic;
            color: var(--primary-color);
            border-left: 5px solid var(--accent-color);
            padding: 1.5rem 2rem;
            margin: 2.5rem 0;
            background-color: rgba(251, 191, 36, 0.05);
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .sidebar-widget {
            background-color: var(--light-color);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin-bottom: 2rem;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            font-size: 1.3rem;
            margin-top: 0;
            border-bottom: 2px solid var(--gray-light);
            padding-bottom: 0.8rem;
            color: var(--primary-color);
        }
        .widget-links {
            list-style: none;
            margin-top: 1rem;
        }
        .widget-links li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px dashed var(--gray-light);
        }
        .widget-links a {
            color: var(--text-color);
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
        }
        .widget-links a:hover {
            color: var(--secondary-color);
            padding-left: 5px;
        }
        .widget-links i {
            margin-right: 10px;
            color: var(--primary-color);
            font-size: 0.9rem;
        }
        .interactive-section {
            background-color: #f0f9ff;
            padding: 2.5rem;
            border-radius: var(--border-radius);
            margin: 3rem 0;
            border: 1px solid #bae6fd;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--dark-color);
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 1px solid var(--gray-light);
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
        }
        .rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 5px;
        }
        .rating input {
            display: none;
        }
        .rating label {
            font-size: 1.8rem;
            color: var(--gray-light);
            cursor: pointer;
            transition: var(--transition);
        }
        .rating label:hover,
        .rating label:hover ~ label,
        .rating input:checked ~ label {
            color: var(--accent-color);
        }
        .btn {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: var(--border-radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-block;
            text-align: center;
        }
        .btn:hover {
            background-color: #1e40af;
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(30, 58, 138, 0.2);
        }
        .btn-secondary {
            background-color: var(--secondary-color);
        }
        .btn-secondary:hover {
            background-color: #b91c1c;
        }
        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: white;
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
            border-bottom: 2px solid var(--primary-color);
            padding-bottom: 0.5rem;
        }
        .footer-links a {
            color: #cbd5e1;
            text-decoration: none;
            display: block;
            margin-bottom: 0.8rem;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent-color);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255, 255, 255, 0.05);
            padding: 1rem;
            border-radius: var(--border-radius);
            margin-bottom: 1rem;
            border-left: 3px solid var(--accent-color);
        }
        friend-link a {
            color: var(--accent-color);
            font-weight: 600;
            text-decoration: none;
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #94a3b8;
            font-size: 0.9rem;
        }
        .update-time {
            background-color: #fef3c7;
            color: #92400e;
            padding: 0.8rem 1.5rem;
            border-radius: var(--border-radius);
            margin: 1.5rem 0;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 600;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            aside {
                grid-column: 1;
            }
            .header-container {
                flex-wrap: wrap;
            }
            nav ul {
                display: none;
            }
            .hamburger {
                display: block;
            }
        }
        @media (max-width: 768px) {
            .hero {
                padding: 3rem 1rem;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .interactive-section {
                padding: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .search-form {
                flex-direction: column;
                border-radius: var(--border-radius);
            }
            .search-form input,
            .search-form button {
                width: 100%;
                border-radius: 0;
            }
            .search-form button {
                padding: 1rem;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
        }