:root {
            --primary-color: #4a1c8c;
            --secondary-color: #ff9800;
            --accent-color: #ff5722;
            --text-dark: #333333;
            --text-light: #666666;
            --bg-light: #f9f5ff;
            --bg-white: #ffffff;
            --border-color: #e0e0e0;
            --shadow: 0 4px 12px rgba(74, 28, 140, 0.1);
            --radius: 12px;
            --transition: all 0.3s ease;
            --max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background-color: var(--bg-white);
            overflow-x: hidden;
        }
        .header-top {
            background-color: var(--primary-color);
            color: white;
            padding: 1rem 0;
            box-shadow: var(--shadow);
        }
        .header-container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            color: white;
            text-decoration: none;
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo-icon {
            color: var(--secondary-color);
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .desktop-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--radius);
            transition: var(--transition);
        }
        .desktop-nav a:hover {
            background-color: rgba(255, 255, 255, 0.15);
            transform: translateY(-2px);
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            width: 280px;
            height: 100vh;
            background-color: var(--primary-color);
            z-index: 1000;
            padding: 2rem;
            transform: translateX(100%);
            transition: transform 0.4s ease;
            box-shadow: -5px 0 15px rgba(0,0,0,0.1);
        }
        .mobile-nav.active {
            transform: translateX(0);
        }
        .mobile-nav ul {
            list-style: none;
            margin-top: 3rem;
        }
        .mobile-nav li {
            margin-bottom: 1.5rem;
        }
        .mobile-nav a {
            color: white;
            text-decoration: none;
            font-size: 1.2rem;
            font-weight: 600;
            display: block;
            padding: 0.8rem;
            border-radius: var(--radius);
            transition: var(--transition);
        }
        .mobile-nav a:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }
        .close-menu {
            position: absolute;
            top: 1.5rem;
            right: 1.5rem;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0,0,0,0.5);
            z-index: 999;
        }
        .overlay.active {
            display: block;
        }
        .breadcrumb {
            background-color: var(--bg-light);
            padding: 1rem 0;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb-container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .breadcrumb a {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .main-container {
            max-width: var(--max-width);
            margin: 2rem auto;
            padding: 0 1.5rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        @media (max-width: 992px) {
            .main-container {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background-color: var(--bg-white);
            padding: 2.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 2px solid var(--border-color);
        }
        .publish-date, .read-time {
            color: var(--text-light);
            font-size: 0.95rem;
        }
        .read-time i {
            margin-right: 5px;
            color: var(--secondary-color);
        }
        h1 {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            line-height: 1.3;
        }
        h2 {
            font-size: 1.8rem;
            color: var(--primary-color);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--border-color);
        }
        h3 {
            font-size: 1.4rem;
            color: var(--secondary-color);
            margin: 1.8rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            hyphens: auto;
        }
        .intro {
            font-size: 1.2rem;
            background: linear-gradient(135deg, var(--bg-light) 0%, #f0eaff 100%);
            padding: 1.8rem;
            border-radius: var(--radius);
            border-left: 5px solid var(--secondary-color);
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #fff9e6;
            padding: 1.5rem;
            border-radius: var(--radius);
            border-left: 4px solid var(--accent-color);
            margin: 2rem 0;
        }
        .highlight p:last-child {
            margin-bottom: 0;
        }
        .featured-image {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: var(--radius);
            margin: 2rem 0;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            transition: var(--transition);
        }
        .featured-image:hover {
            transform: scale(1.01);
            box-shadow: 0 12px 25px rgba(0,0,0,0.15);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--text-light);
            margin-top: 0.5rem;
            margin-bottom: 2rem;
        }
        .content-section {
            margin-bottom: 3rem;
        }
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .tip-card {
            background-color: var(--bg-light);
            padding: 1.8rem;
            border-radius: var(--radius);
            border-top: 4px solid var(--primary-color);
            transition: var(--transition);
        }
        .tip-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }
        .tip-card h4 {
            color: var(--primary-color);
            margin-bottom: 0.8rem;
            font-size: 1.2rem;
        }
        .stats-box {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            margin: 2.5rem 0;
        }
        .stat {
            flex: 1;
            min-width: 200px;
            text-align: center;
            padding: 1.5rem;
            background-color: var(--bg-light);
            border-radius: var(--radius);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary-color);
            line-height: 1;
            margin-bottom: 0.5rem;
        }
        .stat-label {
            color: var(--text-light);
            font-weight: 600;
        }
        .btn {
            display: inline-block;
            background-color: var(--secondary-color);
            color: white;
            padding: 0.9rem 1.8rem;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            box-shadow: 0 4px 10px rgba(255, 152, 0, 0.3);
        }
        .btn:hover {
            background-color: var(--accent-color);
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(255, 152, 0, 0.4);
        }
        .btn-download {
            background: linear-gradient(90deg, var(--primary-color), #6a3cb8);
            margin: 1.5rem 0;
        }
        .btn-download:hover {
            background: linear-gradient(90deg, #6a3cb8, var(--primary-color));
        }
        blockquote {
            border-left: 5px solid var(--secondary-color);
            padding: 1.5rem 2rem;
            margin: 2.5rem 0;
            background-color: var(--bg-light);
            border-radius: 0 var(--radius) var(--radius) 0;
            font-style: italic;
        }
        blockquote p {
            margin-bottom: 0.5rem;
        }
        blockquote footer {
            text-align: right;
            color: var(--text-light);
            font-weight: 600;
        }
        ul, ol {
            margin-left: 1.8rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        strong {
            color: var(--primary-color);
        }
        em {
            color: var(--text-light);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background-color: var(--bg-white);
            padding: 1.8rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .sidebar-title {
            font-size: 1.3rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            padding-bottom: 0.8rem;
            border-bottom: 2px solid var(--border-color);
        }
        .search-form {
            display: flex;
            margin-bottom: 1rem;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.9rem 1.2rem;
            border: 2px solid var(--border-color);
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-input:focus {
            border-color: var(--primary-color);
        }
        .search-btn {
            background-color: var(--primary-color);
            color: white;
            border: none;
            border-radius: 0 50px 50px 0;
            padding: 0 1.5rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-btn:hover {
            background-color: #5a2b9c;
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 5px;
            margin: 1.2rem 0;
        }
        .star {
            color: #ddd;
            font-size: 1.8rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #ffc107;
        }
        .quick-links ul {
            list-style: none;
            margin-left: 0;
        }
        .quick-links li {
            margin-bottom: 0.8rem;
        }
        .quick-links a {
            color: var(--text-dark);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0.8rem;
            border-radius: var(--radius);
            transition: var(--transition);
        }
        .quick-links a:hover {
            background-color: var(--bg-light);
            color: var(--primary-color);
        }
        .quick-links i {
            color: var(--secondary-color);
        }
        .interaction-section {
            margin: 3rem 0;
            padding: 2.5rem;
            background-color: var(--bg-light);
            border-radius: var(--radius);
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--text-dark);
        }
        .form-input, .form-textarea {
            width: 100%;
            padding: 1rem;
            border: 2px solid var(--border-color);
            border-radius: var(--radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-input:focus, .form-textarea:focus {
            border-color: var(--primary-color);
            outline: none;
        }
        .form-textarea {
            min-height: 150px;
            resize: vertical;
        }
        .form-row {
            display: flex;
            gap: 1rem;
        }
        @media (max-width: 768px) {
            .form-row {
                flex-direction: column;
            }
        }
        .longtail-links {
            background-color: var(--bg-light);
            padding: 3rem 0;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .links-container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.2rem;
        }
        .web-link {
            background-color: var(--bg-white);
            padding: 1.2rem;
            border-radius: var(--radius);
            box-shadow: 0 3px 8px rgba(0,0,0,0.05);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 12px rgba(0,0,0,0.08);
        }
        .web-link a {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .web-link a:hover {
            text-decoration: underline;
        }
        .web-link i {
            color: var(--secondary-color);
            font-size: 0.9rem;
        }
        .footer-bottom {
            background-color: var(--primary-color);
            color: white;
            padding: 2.5rem 0;
        }
        .footer-container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1.5rem;
        }
        .copyright {
            font-size: 0.95rem;
        }
        .footer-links {
            display: flex;
            gap: 1.5rem;
        }
        .footer-links a {
            color: white;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--secondary-color);
        }
        @media (max-width: 768px) {
            html {
                font-size: 15px;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            .desktop-nav {
                display: none;
            }
            .mobile-menu-btn {
                display: block;
            }
            .header-container, .breadcrumb-container, .main-container {
                padding: 0 1rem;
            }
            .article-content {
                padding: 1.8rem;
            }
            .stats-box {
                flex-direction: column;
            }
            .footer-container {
                flex-direction: column;
                text-align: center;
            }
        }
        @media print {
            .header-top, .breadcrumb, .sidebar, .interaction-section, .longtail-links, .footer-bottom {
                display: none;
            }
            .main-container {
                grid-template-columns: 1fr;
                max-width: 100%;
            }
            .article-content {
                box-shadow: none;
                padding: 0;
            }
            a {
                color: #000;
                text-decoration: underline;
            }
        }