:root {
            --primary: #1a237e;
            --secondary: #ff6f00;
            --accent: #4caf50;
            --light: #f5f5f7;
            --dark: #121212;
            --text: #333333;
            --text-light: #666666;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.6;
            color: var(--text);
            background-color: #fff;
            overflow-x: hidden;
        }
        header {
            background: linear-gradient(135deg, var(--primary) 0%, #283593 100%);
            color: white;
            padding: 1rem 5%;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1400px;
            margin: 0 auto;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--secondary);
        }
        .my-logo span {
            background: linear-gradient(to right, #ff6f00, #ffab00);
            -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;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        nav a:hover {
            background: rgba(255,255,255,0.15);
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        .mobile-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            background: var(--primary);
            padding: 1rem;
            box-shadow: var(--shadow);
        }
        .mobile-nav.active {
            display: block;
        }
        .mobile-nav ul {
            flex-direction: column;
            gap: 0;
        }
        .mobile-nav a {
            display: block;
            padding: 1rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .breadcrumb {
            background: var(--light);
            padding: 1rem 5%;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 5%;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        article {
            grid-column: 1;
        }
        aside {
            grid-column: 2;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid var(--secondary);
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary);
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--light);
        }
        h3 {
            font-size: 1.5rem;
            color: #2c3e50;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.2rem;
            color: #34495e;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            color: var(--text-light);
            font-weight: 500;
            margin-bottom: 2rem;
            padding: 1.5rem;
            background: var(--light);
            border-left: 4px solid var(--secondary);
            border-radius: 0 8px 8px 0;
        }
        .highlight {
            background: linear-gradient(120deg, rgba(255,111,0,0.15) 0%, rgba(255,111,0,0) 100%);
            padding: 1.5rem;
            border-radius: 10px;
            margin: 1.5rem 0;
            border-left: 4px solid var(--secondary);
        }
        .stats-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
            padding: 2rem;
            background: var(--light);
            border-radius: 12px;
            box-shadow: var(--shadow);
        }
        .stat-item {
            text-align: center;
            padding: 1.5rem;
            background: white;
            border-radius: 8px;
            transition: var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0,0,0,0.12);
        }
        .stat-value {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            display: block;
        }
        .stat-label {
            color: var(--text-light);
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .cta-button {
            display: inline-block;
            background: linear-gradient(135deg, var(--secondary) 0%, #ff8f00 100%);
            color: white;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(255,111,0,0.3);
        }
        .cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(255,111,0,0.4);
        }
        .search-widget {
            background: var(--light);
            padding: 1.5rem;
            border-radius: 10px;
            margin-bottom: 2rem;
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 0.8rem 1rem;
            border: 2px solid #ddd;
            border-radius: 25px 0 0 25px;
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 25px 25px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: #0d1b6b;
        }
        .interactive-section {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            margin: 3rem 0;
            box-shadow: var(--shadow);
            border: 1px solid #eee;
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            margin: 1rem 0;
        }
        .star {
            color: #ddd;
            font-size: 1.5rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #ffc107;
        }
        textarea, input[type="text"], input[type="email"] {
            width: 100%;
            padding: 0.8rem;
            margin-bottom: 1rem;
            border: 2px solid #eee;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        textarea:focus, input:focus {
            border-color: var(--primary);
            outline: none;
        }
        .article-image {
            width: 100%;
            height: auto;
            border-radius: 12px;
            margin: 2rem 0;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .article-image:hover {
            transform: scale(1.01);
            box-shadow: 0 8px 25px rgba(0,0,0,0.15);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--text-light);
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .related-links {
            background: var(--light);
            padding: 2rem;
            border-radius: 12px;
            margin: 2rem 0;
        }
        .related-links h3 {
            color: var(--primary);
            margin-top: 0;
        }
        .related-links ul {
            list-style: none;
            display: grid;
            gap: 0.8rem;
        }
        .related-links a {
            color: var(--text);
            text-decoration: none;
            padding: 0.8rem 1rem;
            background: white;
            border-radius: 8px;
            display: block;
            transition: var(--transition);
            border-left: 4px solid transparent;
        }
        .related-links a:hover {
            border-left-color: var(--secondary);
            transform: translateX(5px);
            background: #fff;
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 3rem 5% 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: white;
            border-bottom: 2px solid var(--secondary);
            padding-bottom: 0.5rem;
            margin-bottom: 1.5rem;
        }
        friend-link {
            display: block;
            margin: 0.5rem 0;
        }
        friend-link a {
            color: #ddd;
            text-decoration: none;
            transition: var(--transition);
        }
        friend-link a:hover {
            color: var(--secondary);
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #333;
            color: #aaa;
            font-size: 0.9rem;
        }
        .update-time {
            background: var(--light);
            padding: 0.5rem 1rem;
            border-radius: 20px;
            display: inline-block;
            margin: 1rem 0;
            font-size: 0.9rem;
            color: var(--text-light);
        }
        @media (max-width: 1024px) {
            main {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            aside {
                grid-column: 1;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            nav ul {
                display: none;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .stats-box {
                grid-template-columns: 1fr;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            .search-form {
                flex-direction: column;
            }
            .search-form input,
            .search-form button {
                border-radius: 25px;
                margin-bottom: 0.5rem;
            }
            .cta-button {
                width: 100%;
                text-align: center;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.6s ease-out;
        }