* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #4a2c8d;
            --secondary: #ff6b35;
            --accent: #00c9b7;
            --light: #f8f9fa;
            --dark: #212529;
            --gray: #6c757d;
            --success: #28a745;
            --warning: #ffc107;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --radius: 8px;
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: var(--dark);
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
            min-height: 100vh;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(90deg, var(--primary) 0%, #2d1b69 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .my-logo:hover {
            color: var(--accent);
            transform: translateY(-2px);
        }
        .my-logo i {
            color: var(--secondary);
        }
        .desktop-nav {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
        }
        .nav-link {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--radius);
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover {
            background: rgba(255, 255, 255, 0.15);
            transform: translateY(-2px);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 3px;
            background: var(--accent);
            transition: var(--transition);
        }
        .nav-link:hover::after {
            width: 80%;
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: var(--primary);
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            padding: 1rem;
            box-shadow: var(--shadow);
        }
        .mobile-nav.active {
            display: flex;
        }
        .breadcrumb {
            background: white;
            padding: 1rem 0;
            border-bottom: 1px solid #eee;
            margin-bottom: 2rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 0.5rem;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--secondary);
            text-decoration: underline;
        }
        main {
            padding: 2rem 0;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 3rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        h1 {
            color: var(--primary);
            font-size: 2.5rem;
            margin-bottom: 1.5rem;
            line-height: 1.3;
            border-bottom: 3px solid var(--accent);
            padding-bottom: 1rem;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2rem;
            }
        }
        h2 {
            color: var(--primary);
            font-size: 1.8rem;
            margin: 2.5rem 0 1.5rem;
            padding-left: 1rem;
            border-left: 5px solid var(--secondary);
        }
        h3 {
            color: var(--dark);
            font-size: 1.4rem;
            margin: 2rem 0 1rem;
        }
        h4 {
            color: var(--gray);
            font-size: 1.2rem;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .highlight-box {
            background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
            border-left: 4px solid var(--accent);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .stat-box {
            background: var(--primary);
            color: white;
            padding: 2rem;
            border-radius: var(--radius);
            text-align: center;
            margin: 2rem 0;
            box-shadow: var(--shadow);
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--accent);
            display: block;
            line-height: 1;
        }
        .stat-label {
            font-size: 1.2rem;
            opacity: 0.9;
        }
        .featured-image {
            width: 100%;
            height: auto;
            border-radius: var(--radius);
            margin: 2rem 0;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .featured-image:hover {
            transform: scale(1.01);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
        }
        .inline-link {
            color: var(--secondary);
            text-decoration: none;
            font-weight: 600;
            border-bottom: 2px dotted var(--secondary);
            transition: var(--transition);
        }
        .inline-link:hover {
            color: var(--primary);
            border-bottom-style: solid;
        }
        .related-links {
            background: var(--light);
            padding: 1.5rem;
            border-radius: var(--radius);
            margin: 2rem 0;
        }
        .related-links h3 {
            color: var(--primary);
            margin-top: 0;
        }
        .related-links ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 0.8rem;
        }
        .related-links li {
            padding: 0.5rem 0;
        }
        .related-links a {
            color: var(--dark);
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .related-links a:hover {
            color: var(--secondary);
            transform: translateX(5px);
        }
        .form-container {
            background: white;
            padding: 2rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin: 3rem 0;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--dark);
        }
        .form-input, .form-textarea, .form-select {
            width: 100%;
            padding: 0.8rem;
            border: 2px solid #e0e0e0;
            border-radius: var(--radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-input:focus, .form-textarea:focus, .form-select:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(0, 201, 183, 0.2);
        }
        .form-textarea {
            min-height: 150px;
            resize: vertical;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            margin: 0.5rem 0;
        }
        .star {
            font-size: 1.5rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: var(--warning);
        }
        .btn {
            background: linear-gradient(135deg, var(--secondary) 0%, #ff8c42 100%);
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            font-size: 1rem;
            font-weight: 600;
            border-radius: var(--radius);
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(255, 107, 53, 0.3);
        }
        .btn-secondary {
            background: linear-gradient(135deg, var(--primary) 0%, #5d3fb2 100%);
        }
        .btn-secondary:hover {
            box-shadow: 0 6px 15px rgba(74, 44, 141, 0.3);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            padding: 1.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .search-box {
            display: flex;
            gap: 0.5rem;
        }
        .search-box input {
            flex: 1;
            padding: 0.8rem;
            border: 2px solid #e0e0e0;
            border-radius: var(--radius);
        }
        .update-info {
            background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
            border-left: 4px solid var(--success);
        }
        .update-info i {
            color: var(--success);
            margin-right: 0.5rem;
        }
        footer {
            background: linear-gradient(90deg, var(--dark) 0%, #343a40 100%);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: var(--accent);
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .footer-links a:hover {
            color: var(--accent);
            transform: translateX(5px);
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.1);
            padding: 1rem;
            border-radius: var(--radius);
            margin: 1rem 0;
            transition: var(--transition);
        }
        friend-link:hover {
            background: rgba(255, 255, 255, 0.15);
            transform: translateX(5px);
        }
        friend-link a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        .tooltip {
            position: relative;
            display: inline-block;
            border-bottom: 1px dotted var(--primary);
            cursor: help;
        }
        .tooltip-text {
            visibility: hidden;
            width: 300px;
            background: var(--dark);
            color: white;
            text-align: center;
            padding: 0.5rem;
            border-radius: var(--radius);
            position: absolute;
            z-index: 1;
            bottom: 125%;
            left: 50%;
            transform: translateX(-50%);
            opacity: 0;
            transition: opacity 0.3s;
            font-size: 0.9rem;
        }
        .tooltip:hover .tooltip-text {
            visibility: visible;
            opacity: 1;
        }
        .accordion {
            margin: 1.5rem 0;
        }
        .accordion-item {
            border: 1px solid #e0e0e0;
            border-radius: var(--radius);
            margin-bottom: 0.5rem;
            overflow: hidden;
        }
        .accordion-header {
            background: var(--light);
            padding: 1rem 1.5rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            transition: var(--transition);
        }
        .accordion-header:hover {
            background: #e9ecef;
        }
        .accordion-content {
            padding: 0 1.5rem;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
        }
        .accordion-item.active .accordion-content {
            padding: 1.5rem;
            max-height: 1000px;
        }
        @media (max-width: 768px) {
            .article-content {
                padding: 1.5rem;
            }
            .content-grid {
                gap: 2rem;
            }
            .stat-number {
                font-size: 2.5rem;
            }
            .form-container {
                padding: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 15px;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
        }