* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary-color: #FF6B35;
            --secondary-color: #1A73E8;
            --accent-color: #34A853;
            --dark-color: #202124;
            --light-color: #F8F9FA;
            --text-color: #333;
            --text-light: #666;
            --border-color: #DADCE0;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        body {
            background-color: #fff;
            color: var(--text-color);
            line-height: 1.6;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: var(--secondary-color);
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-color);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background-color: #fff;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-color);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo i {
            color: var(--accent-color);
        }
        .logo span {
            color: var(--dark-color);
        }
        .main-nav {
            display: flex;
            gap: 30px;
        }
        .main-nav a {
            font-weight: 600;
            color: var(--dark-color);
            padding: 5px 0;
            position: relative;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: var(--primary-color);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 100%;
            height: 3px;
            background-color: var(--primary-color);
            border-radius: 2px;
        }
        .search-form-header {
            display: flex;
            background: #f1f3f4;
            border-radius: 24px;
            overflow: hidden;
            padding: 5px;
            min-width: 200px;
        }
        .search-form-header input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 8px 15px;
            outline: none;
            font-size: 0.95rem;
        }
        .search-form-header button {
            background: var(--secondary-color);
            color: white;
            border: none;
            border-radius: 20px;
            padding: 8px 20px;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form-header button:hover {
            background: #0d62d9;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark-color);
        }
        .breadcrumb {
            padding: 15px 0;
            font-size: 0.9rem;
            color: var(--text-light);
            background-color: #f9f9f9;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--primary-color);
        }
        .breadcrumb span {
            margin: 0 8px;
        }
        .hero {
            padding: 40px 0;
            text-align: center;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            border-radius: 0 0 20px 20px;
            margin-bottom: 40px;
        }
        .hero h1 {
            font-size: 2.8rem;
            color: var(--dark-color);
            margin-bottom: 20px;
            line-height: 1.2;
        }
        .hero p {
            font-size: 1.2rem;
            color: var(--text-light);
            max-width: 800px;
            margin: 0 auto 30px;
        }
        .hero-cta {
            display: inline-flex;
            gap: 15px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .btn {
            padding: 12px 28px;
            border-radius: 30px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
            cursor: pointer;
            border: none;
            font-size: 1rem;
        }
        .btn-primary {
            background-color: var(--primary-color);
            color: white;
        }
        .btn-primary:hover {
            background-color: #e55a2b;
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(255, 107, 53, 0.3);
        }
        .btn-secondary {
            background-color: var(--secondary-color);
            color: white;
        }
        .btn-secondary:hover {
            background-color: #0d62d9;
            transform: translateY(-3px);
        }
        .content-main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 20px 0 50px;
        }
        .article-content {
            background: #fff;
            border-radius: 12px;
            padding: 30px;
            box-shadow: var(--shadow);
        }
        .featured-image {
            width: 100%;
            border-radius: 12px;
            overflow: hidden;
            margin-bottom: 30px;
            border: 1px solid var(--border-color);
        }
        .featured-image img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform 0.5s ease;
        }
        .featured-image:hover img {
            transform: scale(1.02);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--text-light);
            font-size: 0.9rem;
            padding: 10px;
            background: #f9f9f9;
        }
        .article-section {
            margin-bottom: 40px;
            padding-bottom: 30px;
            border-bottom: 1px solid var(--border-color);
        }
        .article-section:last-of-type {
            border-bottom: none;
        }
        h2 {
            font-size: 2rem;
            color: var(--dark-color);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary-color);
        }
        h3 {
            font-size: 1.5rem;
            color: var(--dark-color);
            margin: 25px 0 15px;
        }
        h4 {
            font-size: 1.2rem;
            color: var(--secondary-color);
            margin: 20px 0 10px;
        }
        p {
            margin-bottom: 18px;
            font-size: 1.05rem;
        }
        .highlight {
            background-color: #fff8e1;
            border-left: 4px solid #ffc107;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .highlight strong {
            color: var(--primary-color);
        }
        ul, ol {
            margin-left: 25px;
            margin-bottom: 20px;
        }
        li {
            margin-bottom: 10px;
        }
        .tip-box {
            background-color: #e8f5e9;
            border: 1px solid #c8e6c9;
            border-radius: 8px;
            padding: 20px;
            margin: 25px 0;
            position: relative;
            padding-left: 60px;
        }
        .tip-box::before {
            content: '\f0eb';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 20px;
            top: 20px;
            font-size: 1.5rem;
            color: var(--accent-color);
        }
        .warning-box {
            background-color: #ffebee;
            border: 1px solid #ffcdd2;
            border-radius: 8px;
            padding: 20px;
            margin: 25px 0;
            position: relative;
            padding-left: 60px;
        }
        .warning-box::before {
            content: '\f071';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 20px;
            top: 20px;
            font-size: 1.5rem;
            color: #f44336;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .stat-card {
            background: #f8f9fa;
            border-radius: 10px;
            padding: 20px;
            text-align: center;
            border-top: 4px solid var(--secondary-color);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary-color);
            line-height: 1;
            margin-bottom: 10px;
        }
        .stat-label {
            font-size: 1rem;
            color: var(--text-light);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background: #fff;
            border-radius: 12px;
            padding: 25px;
            box-shadow: var(--shadow);
        }
        .sidebar-title {
            font-size: 1.3rem;
            color: var(--dark-color);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--accent-color);
        }
        .download-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .download-links li {
            margin-bottom: 15px;
            border-bottom: 1px dashed var(--border-color);
            padding-bottom: 15px;
        }
        .download-links li:last-child {
            margin-bottom: 0;
            border-bottom: none;
            padding-bottom: 0;
        }
        .download-link {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 600;
            padding: 12px;
            border-radius: 8px;
            background: #f8f9fa;
            transition: var(--transition);
        }
        .download-link:hover {
            background: #e9ecef;
            transform: translateX(5px);
        }
        .download-link i {
            color: var(--accent-color);
            font-size: 1.2rem;
        }
        .related-articles {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .related-articles li {
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 1px solid var(--border-color);
        }
        .related-articles li:last-child {
            margin-bottom: 0;
            border-bottom: none;
        }
        .related-articles a {
            display: block;
            padding: 8px 0;
            font-weight: 500;
            color: var(--text-color);
        }
        .related-articles a:hover {
            color: var(--primary-color);
            padding-left: 5px;
        }
        .user-interaction {
            margin-top: 50px;
            padding-top: 30px;
            border-top: 2px solid var(--border-color);
        }
        .interaction-tabs {
            display: flex;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 30px;
        }
        .tab-btn {
            padding: 15px 30px;
            background: none;
            border: none;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-light);
            cursor: pointer;
            position: relative;
            transition: var(--transition);
        }
        .tab-btn:hover {
            color: var(--primary-color);
        }
        .tab-btn.active {
            color: var(--primary-color);
        }
        .tab-btn.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            width: 100%;
            height: 3px;
            background-color: var(--primary-color);
        }
        .tab-content {
            display: none;
            animation: fadeIn 0.5s ease;
        }
        .tab-content.active {
            display: block;
        }
        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }
        .rating-system {
            text-align: center;
            padding: 20px;
            background: #f8f9fa;
            border-radius: 12px;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 5px;
            margin: 20px 0;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #FFC107;
        }
        .rating-form {
            max-width: 500px;
            margin: 0 auto;
        }
        .rating-form textarea,
        .comment-form textarea,
        .search-form-main input {
            width: 100%;
            padding: 15px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 1rem;
            margin-bottom: 15px;
            resize: vertical;
            transition: var(--transition);
        }
        .rating-form textarea:focus,
        .comment-form textarea:focus,
        .search-form-main input:focus {
            outline: none;
            border-color: var(--secondary-color);
            box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.2);
        }
        .form-group {
            display: flex;
            gap: 15px;
            margin-bottom: 15px;
        }
        .form-group input {
            flex: 1;
            padding: 12px 15px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 1rem;
        }
        .submit-btn {
            background-color: var(--accent-color);
            color: white;
            border: none;
            border-radius: 8px;
            padding: 12px 30px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            display: block;
            width: 100%;
        }
        .submit-btn:hover {
            background-color: #2e8b47;
        }
        .comment-list {
            margin-top: 30px;
        }
        .comment-item {
            padding: 20px;
            background: #f8f9fa;
            border-radius: 12px;
            margin-bottom: 20px;
            border-left: 4px solid var(--secondary-color);
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 10px;
            font-size: 0.9rem;
            color: var(--text-light);
        }
        .comment-author {
            font-weight: 600;
            color: var(--dark-color);
        }
        .web-links-section {
            background: #f8f9fa;
            padding: 40px 0;
            margin: 50px 0 0;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
        }
        .web-link {
            background: white;
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateY(-5px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .web-link a {
            color: var(--text-color);
            font-weight: 500;
            display: block;
        }
        .web-link a:hover {
            color: var(--primary-color);
        }
        .site-footer {
            background-color: var(--dark-color);
            color: #fff;
            padding: 50px 0 20px;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h3 {
            color: #fff;
            font-size: 1.3rem;
            margin-bottom: 25px;
            border-bottom: 2px solid var(--primary-color);
            padding-bottom: 10px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 15px;
        }
        .footer-links a {
            color: #b0b7c3;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary-color);
            padding-left: 5px;
        }
        .social-links {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }
        .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(255,255,255,0.1);
            border-radius: 50%;
            color: white;
            transition: var(--transition);
        }
        .social-links a:hover {
            background: var(--primary-color);
            transform: translateY(-3px);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #b0b7c3;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .content-main {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 2.3rem;
            }
        }
        @media (max-width: 768px) {
            .main-nav,
            .search-form-header {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .mobile-menu {
                position: fixed;
                top: 80px;
                left: 0;
                width: 100%;
                background: white;
                box-shadow: var(--shadow);
                padding: 20px;
                transform: translateY(-100%);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
                z-index: 999;
            }
            .mobile-menu.active {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .mobile-nav {
                display: flex;
                flex-direction: column;
                gap: 20px;
                margin-bottom: 20px;
            }
            .mobile-search {
                display: flex;
                margin-top: 20px;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1.1rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .form-group {
                flex-direction: column;
            }
        }
        @media (max-width: 576px) {
            .container {
                padding: 0 15px;
            }
            .hero {
                padding: 30px 0;
            }
            .article-content {
                padding: 20px;
            }
            .sidebar-widget {
                padding: 20px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .web-links-container {
                grid-template-columns: 1fr;
            }
        }