* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-blue: #1a365d;
            --secondary-blue: #2d5289;
            --accent-blue: #4a8fd6;
            --light-blue: #e6f2ff;
            --dark-gray: #2d3748;
            --medium-gray: #718096;
            --light-gray: #f7fafc;
            --white: #ffffff;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--dark-gray);
            background-color: var(--white);
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
            color: var(--white);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 700;
            text-decoration: none;
            color: var(--white);
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .my-logo:hover {
            color: var(--light-blue);
            transform: translateY(-2px);
        }
        .my-logo i {
            color: var(--accent-blue);
        }
        .desktop-nav {
            display: flex;
            gap: 2rem;
        }
        .desktop-nav a {
            color: var(--white);
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        .desktop-nav a:hover {
            background-color: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }
        .mobile-nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--white);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            gap: 1rem;
            padding: 1rem;
            background-color: var(--primary-blue);
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            box-shadow: var(--shadow);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            color: var(--white);
            text-decoration: none;
            padding: 0.75rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            transition: var(--transition);
        }
        .mobile-nav a:hover {
            background-color: rgba(255, 255, 255, 0.1);
            padding-left: 1.5rem;
        }
        .breadcrumb {
            background-color: var(--light-gray);
            padding: 1rem 0;
            border-bottom: 1px solid #e2e8f0;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
        }
        .breadcrumb a {
            color: var(--medium-gray);
            text-decoration: none;
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary-blue);
        }
        .breadcrumb .separator {
            margin: 0 0.5rem;
            color: var(--medium-gray);
        }
        .search-section {
            background: linear-gradient(to right, var(--light-blue), var(--white));
            padding: 3rem 0;
            margin: 2rem 0;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        .search-container {
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
        }
        .search-form {
            display: flex;
            gap: 10px;
            margin-top: 1.5rem;
        }
        .search-input {
            flex: 1;
            padding: 1rem 1.5rem;
            border: 2px solid var(--accent-blue);
            border-radius: 50px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-input:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(74, 143, 214, 0.3);
        }
        .search-button {
            background: linear-gradient(135deg, var(--secondary-blue) 0%, var(--accent-blue) 100%);
            color: var(--white);
            border: none;
            padding: 1rem 2rem;
            border-radius: 50px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(74, 143, 214, 0.3);
        }
        main {
            padding: 2rem 0;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        .article-content {
            background: var(--white);
            padding: 2rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        .article-header {
            margin-bottom: 3rem;
            padding-bottom: 2rem;
            border-bottom: 3px solid var(--light-blue);
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary-blue);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--medium-gray);
            font-size: 0.9rem;
            margin-top: 1rem;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-blue);
            margin: 3rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--light-blue);
        }
        h3 {
            font-size: 1.5rem;
            color: var(--secondary-blue);
            margin: 2.5rem 0 1rem;
        }
        h4 {
            font-size: 1.2rem;
            color: var(--accent-blue);
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            line-height: 1.8;
        }
        .highlight {
            background-color: var(--light-blue);
            padding: 1.5rem;
            border-left: 4px solid var(--accent-blue);
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .feature-image {
            width: 100%;
            height: 400px;
            object-fit: cover;
            border-radius: 10px;
            margin: 2rem 0;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .feature-image:hover {
            transform: scale(1.01);
        }
        .image-caption {
            text-align: center;
            color: var(--medium-gray);
            font-style: italic;
            margin-top: -1rem;
            margin-bottom: 2rem;
        }
        .content-link {
            color: var(--accent-blue);
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
            border-bottom: 2px dotted transparent;
        }
        .content-link:hover {
            color: var(--secondary-blue);
            border-bottom-color: var(--accent-blue);
        }
        .strategy-box {
            background: linear-gradient(135deg, #f8fafc 0%, #edf2f7 100%);
            padding: 2rem;
            border-radius: 10px;
            margin: 2rem 0;
            border: 2px solid #e2e8f0;
        }
        .quote {
            font-size: 1.2rem;
            font-style: italic;
            color: var(--primary-blue);
            padding: 2rem;
            background: linear-gradient(135deg, var(--white) 0%, var(--light-blue) 100%);
            border-radius: 10px;
            margin: 2rem 0;
            position: relative;
        }
        .quote::before {
            content: '"';
            font-size: 4rem;
            color: var(--accent-blue);
            opacity: 0.3;
            position: absolute;
            top: -1rem;
            left: 1rem;
        }
        .sidebar {
            background: var(--white);
            padding: 2rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
            height: fit-content;
            position: sticky;
            top: 100px;
        }
        .rating-widget {
            text-align: center;
            padding: 2rem;
            background: linear-gradient(135deg, var(--light-blue) 0%, #f0f7ff 100%);
            border-radius: 10px;
            margin-bottom: 2rem;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 5px;
            margin: 1.5rem 0;
        }
        .star {
            color: #e2e8f0;
            cursor: pointer;
            font-size: 1.5rem;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #fbbf24;
            transform: scale(1.2);
        }
        .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            margin-top: 1.5rem;
        }
        .rating-input {
            padding: 0.75rem;
            border: 1px solid #cbd5e0;
            border-radius: 4px;
            font-size: 1rem;
        }
        .rating-button {
            background: linear-gradient(135deg, var(--secondary-blue) 0%, var(--accent-blue) 100%);
            color: var(--white);
            border: none;
            padding: 0.75rem;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .rating-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(74, 143, 214, 0.3);
        }
        .table-of-contents {
            margin-top: 2rem;
        }
        .toc-list {
            list-style: none;
            margin-top: 1rem;
        }
        .toc-list li {
            margin-bottom: 0.75rem;
            padding-left: 1rem;
            position: relative;
        }
        .toc-list li::before {
            content: "▶";
            color: var(--accent-blue);
            position: absolute;
            left: 0;
            font-size: 0.8rem;
        }
        .toc-list a {
            color: var(--dark-gray);
            text-decoration: none;
            transition: var(--transition);
        }
        .toc-list a:hover {
            color: var(--accent-blue);
            padding-left: 5px;
        }
        .comments-section {
            margin-top: 4rem;
            padding-top: 3rem;
            border-top: 3px solid var(--light-blue);
        }
        .comment-form {
            background: var(--light-gray);
            padding: 2rem;
            border-radius: 10px;
            margin-bottom: 3rem;
        }
        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
            margin-bottom: 1rem;
        }
        .form-input,
        .form-textarea {
            width: 100%;
            padding: 0.75rem;
            border: 1px solid #cbd5e0;
            border-radius: 4px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-input:focus,
        .form-textarea:focus {
            outline: none;
            border-color: var(--accent-blue);
            box-shadow: 0 0 0 3px rgba(74, 143, 214, 0.3);
        }
        .form-textarea {
            grid-column: 1 / -1;
            min-height: 150px;
            resize: vertical;
        }
        .form-button {
            background: linear-gradient(135deg, var(--secondary-blue) 0%, var(--accent-blue) 100%);
            color: var(--white);
            border: none;
            padding: 1rem 2rem;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .form-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(74, 143, 214, 0.3);
        }
        .comment {
            background: var(--white);
            padding: 1.5rem;
            border-radius: 8px;
            margin-bottom: 1.5rem;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
            border-left: 4px solid var(--accent-blue);
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #e2e8f0;
        }
        .comment-author {
            font-weight: 600;
            color: var(--primary-blue);
        }
        .comment-date {
            color: var(--medium-gray);
            font-size: 0.9rem;
        }
        footer {
            background: linear-gradient(135deg, var(--primary-blue) 0%, #1a202c 100%);
            color: var(--white);
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: var(--white);
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.75rem;
        }
        .footer-links a {
            color: #cbd5e0;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent-blue);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.1);
            padding: 1rem;
            border-radius: 6px;
            margin: 1rem 0;
            transition: var(--transition);
        }
        friend-link:hover {
            background: rgba(255, 255, 255, 0.15);
            transform: translateX(5px);
        }
        friend-link a {
            color: var(--accent-blue);
            text-decoration: none;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .sidebar {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .mobile-nav-toggle {
                display: block;
            }
            .desktop-nav {
                display: none;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.3rem;
            }
            .feature-image {
                height: 300px;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .search-form {
                flex-direction: column;
            }
            .search-input,
            .search-button {
                width: 100%;
            }
        }
        @media (max-width: 480px) {
            .article-content,
            .sidebar {
                padding: 1.5rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            .my-logo {
                font-size: 1.8rem;
            }
        }
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-in {
            animation: fadeIn 0.6s ease-out forwards;
        }
        @media print {
            .mobile-nav-toggle,
            .search-section,
            .sidebar,
            .comments-section,
            footer {
                display: none;
            }
            .content-grid {
                grid-template-columns: 1fr;
            }
            body {
                font-size: 12pt;
                line-height: 1.5;
            }
            .article-content {
                box-shadow: none;
                padding: 0;
            }
        }