:root {
            --primary-color: #1a365d;
            --secondary-color: #2b6cb0;
            --accent-color: #e53e3e;
            --light-color: #f7fafc;
            --dark-color: #2d3748;
            --text-color: #4a5568;
            --border-radius: 8px;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-color);
            background-color: #f8f9fa;
            overflow-x: hidden;
        }
        a {
            color: var(--secondary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-color);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .my-logo span {
            color: #f6e05e;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .nav-links a {
            color: white;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.5rem 0;
            position: relative;
        }
        .nav-links a:hover {
            color: #f6e05e;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            background: #f6e05e;
            bottom: 0;
            left: 0;
            transition: var(--transition);
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: var(--light-color);
            padding: 1rem 0;
            border-bottom: 1px solid #e2e8f0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li {
            margin-right: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin-left: 0.5rem;
            color: var(--text-color);
        }
        main {
            padding: 2.5rem 0;
            background-color: white;
        }
        article {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 20px;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            text-align: center;
        }
        .article-meta {
            text-align: center;
            color: #718096;
            font-size: 0.95rem;
            margin-bottom: 2.5rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid #e2e8f0;
        }
        .article-meta i {
            margin-right: 0.3rem;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-color);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e2e8f0;
        }
        h3 {
            font-size: 1.6rem;
            color: var(--secondary-color);
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--dark-color);
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            color: var(--dark-color);
            font-weight: 500;
            margin-bottom: 2rem;
            padding: 1.5rem;
            background-color: #edf2f7;
            border-left: 4px solid var(--secondary-color);
            border-radius: var(--border-radius);
        }
        .highlight {
            background-color: #fffacd;
            padding: 0.2rem 0.4rem;
            border-radius: 3px;
            font-weight: 600;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            margin: 2rem auto;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #718096;
            font-size: 0.9rem;
            margin-top: -1.5rem;
            margin-bottom: 2rem;
        }
        blockquote {
            border-left: 4px solid var(--accent-color);
            padding: 1.5rem;
            margin: 2rem 0;
            background-color: #fef2f2;
            font-style: italic;
            color: var(--dark-color);
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        blockquote p {
            margin-bottom: 0;
        }
        .strategy-box {
            background: linear-gradient(to right, #e6f7ff, #f0f9ff);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            border: 1px solid #bae6fd;
            margin: 1.5rem 0;
        }
        .strategy-box h4 {
            color: #0369a1;
            margin-top: 0;
        }
        .search-section, .comment-section, .rating-section {
            background-color: var(--light-color);
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 3rem 0;
            box-shadow: var(--shadow);
        }
        .search-section h3, .comment-section h3, .rating-section h3 {
            margin-top: 0;
            color: var(--primary-color);
        }
        form {
            display: grid;
            gap: 1rem;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 1px solid #cbd5e0;
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--secondary-color);
            box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.2);
        }
        button, .btn {
            background: linear-gradient(to right, var(--secondary-color), var(--primary-color));
            color: white;
            border: none;
            padding: 0.8rem 1.8rem;
            border-radius: var(--border-radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-block;
            text-align: center;
        }
        button:hover, .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
            justify-content: center;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #cbd5e0;
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating label:hover,
        .star-rating label:hover ~ label,
        .star-rating input:checked ~ label {
            color: #f6e05e;
        }
        .related-links {
            background-color: #f1f5f9;
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 2.5rem 0;
        }
        .related-links h3 {
            margin-top: 0;
            color: var(--primary-color);
        }
        .related-links ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
        }
        .related-links li {
            background: white;
            padding: 1rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .related-links li:hover {
            transform: translateX(5px);
            box-shadow: var(--shadow);
        }
        .related-links a {
            color: var(--dark-color);
            font-weight: 500;
            display: flex;
            align-items: center;
        }
        .related-links a::before {
            content: '▶';
            color: var(--accent-color);
            margin-right: 0.8rem;
            font-size: 0.8rem;
        }
        footer {
            background-color: var(--primary-color);
            color: white;
            padding: 3rem 0 1.5rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: #f6e05e;
            margin-bottom: 1.2rem;
            font-size: 1.2rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.7rem;
        }
        .footer-links a {
            color: #cbd5e0;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .friend-link {
            background-color: rgba(255, 255, 255, 0.1);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin: 1.5rem 0;
            border-left: 4px solid #f6e05e;
        }
        .friend-link a {
            color: #f6e05e;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #2d3748;
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.4rem;
            }
            .header-container {
                flex-direction: column;
                align-items: flex-start;
            }
            nav {
                width: 100%;
                margin-top: 1rem;
                justify-content: space-between;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: var(--primary-color);
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem;
                box-shadow: var(--shadow);
            }
            .nav-links.active {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .related-links ul {
                grid-template-columns: 1fr;
            }
        }