:root {
            --primary: #6a11cb;
            --secondary: #2575fc;
            --accent: #ff4d94;
            --text: #333333;
            --light-text: #666666;
            --bg: #ffffff;
            --section-bg: #f8f9fa;
            --border: #e1e5eb;
            --shadow: rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
            --border-radius: 12px;
            --container-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            font-size: 18px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px var(--shadow);
        }
        .header-container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
        }
        .my-logo {
            font-family: 'Arial Black', sans-serif;
            font-size: 2.2rem;
            font-weight: 900;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -1px;
            transition: var(--transition);
        }
        .my-logo:hover {
            transform: translateY(-2px);
            text-shadow: 0 5px 15px rgba(255, 255, 255, 0.2);
        }
        .my-logo i {
            color: var(--accent);
        }
        .nav-desktop ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .nav-desktop a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 8px 16px;
            border-radius: 6px;
            transition: var(--transition);
            position: relative;
        }
        .nav-desktop a:hover {
            background-color: rgba(255, 255, 255, 0.15);
            transform: translateY(-2px);
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 3px;
            background-color: var(--accent);
            transition: width 0.3s ease;
            border-radius: 2px;
        }
        .nav-desktop a:hover::after {
            width: 70%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 5px;
        }
        .nav-mobile {
            display: none;
            background-color: var(--primary);
            position: absolute;
            top: 80px;
            left: 0;
            width: 100%;
            padding: 20px;
            box-shadow: 0 10px 20px var(--shadow);
        }
        .nav-mobile.active {
            display: block;
        }
        .nav-mobile ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .nav-mobile a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            display: block;
            padding: 12px 20px;
            border-radius: 8px;
            transition: var(--transition);
            border-left: 4px solid transparent;
        }
        .nav-mobile a:hover {
            background-color: rgba(255, 255, 255, 0.1);
            border-left-color: var(--accent);
            padding-left: 30px;
        }
        .breadcrumb {
            max-width: var(--container-width);
            margin: 20px auto;
            padding: 0 20px;
            font-size: 0.95rem;
            color: var(--light-text);
        }
        .breadcrumb a {
            color: var(--secondary);
            text-decoration: none;
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary);
            text-decoration: underline;
        }
        .breadcrumb span {
            margin: 0 8px;
        }
        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 1fr 350px;
            gap: 40px;
        }
        .main-article {
            background-color: var(--bg);
            padding: 40px;
            border-radius: var(--border-radius);
            box-shadow: 0 5px 25px var(--shadow);
            margin-bottom: 40px;
        }
        .article-header {
            margin-bottom: 40px;
            border-bottom: 3px solid var(--border);
            padding-bottom: 25px;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 20px;
            line-height: 1.2;
            background: linear-gradient(to right, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--light-text);
            font-size: 0.95rem;
            margin-top: 15px;
        }
        .update-time {
            background-color: #eef7ff;
            padding: 8px 15px;
            border-radius: 20px;
            font-weight: 600;
            color: var(--secondary);
        }
        h2 {
            font-size: 2rem;
            color: var(--primary);
            margin: 50px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px dashed var(--border);
        }
        h3 {
            font-size: 1.6rem;
            color: var(--secondary);
            margin: 35px 0 15px;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--text);
            margin: 25px 0 12px;
            font-weight: 600;
        }
        p {
            margin-bottom: 25px;
            text-align: justify;
        }
        .highlight {
            background: linear-gradient(90deg, #fff9e6, #fff);
            border-left: 5px solid #ffcc00;
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 10px 10px 0;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
        }
        .highlight strong {
            color: #d35400;
            font-size: 1.1em;
        }
        .feature-image {
            width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            margin: 30px 0;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            transition: var(--transition);
        }
        .feature-image:hover {
            transform: scale(1.01);
            box-shadow: 0 15px 40px rgba(0,0,0,0.15);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--light-text);
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .cta-button {
            display: inline-block;
            background: linear-gradient(to right, var(--primary), var(--secondary));
            color: white;
            padding: 14px 32px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 700;
            font-size: 1.1rem;
            margin: 20px 0;
            transition: var(--transition);
            box-shadow: 0 6px 15px rgba(106, 17, 203, 0.3);
            border: none;
            cursor: pointer;
        }
        .cta-button:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 25px rgba(106, 17, 203, 0.4);
        }
        .interactive-section {
            background-color: var(--section-bg);
            border-radius: var(--border-radius);
            padding: 30px;
            margin: 40px 0;
            border: 1px solid var(--border);
        }
        .sidebar {
            background-color: var(--section-bg);
            border-radius: var(--border-radius);
            padding: 30px;
            height: fit-content;
            position: sticky;
            top: 100px;
        }
        .sidebar-widget {
            margin-bottom: 35px;
            padding-bottom: 25px;
            border-bottom: 1px solid var(--border);
        }
        .sidebar-widget:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }
        .sidebar h3 {
            font-size: 1.4rem;
            margin-top: 0;
            color: var(--primary);
        }
        .search-form {
            display: flex;
            margin-top: 15px;
        }
        .search-input {
            flex: 1;
            padding: 14px 20px;
            border: 2px solid var(--border);
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-input:focus {
            border-color: var(--secondary);
        }
        .search-button {
            background: linear-gradient(to right, var(--primary), var(--secondary));
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            transition: var(--transition);
            font-size: 1.1rem;
        }
        .search-button:hover {
            background: linear-gradient(to right, var(--secondary), var(--primary));
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .star-rating {
            display: flex;
            gap: 8px;
            font-size: 1.8rem;
            color: #ffcc00;
            margin: 10px 0;
        }
        .star-rating i {
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating i:hover {
            transform: scale(1.2);
        }
        .form-input, .form-textarea {
            padding: 15px;
            border: 2px solid var(--border);
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            transition: var(--transition);
            width: 100%;
        }
        .form-input:focus, .form-textarea:focus {
            border-color: var(--secondary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(37, 117, 252, 0.1);
        }
        .form-textarea {
            min-height: 120px;
            resize: vertical;
        }
        .submit-button {
            align-self: flex-start;
            padding: 12px 30px;
        }
        .related-links {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px dashed var(--border);
        }
        .related-links a {
            color: var(--text);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
            padding: 8px;
            border-radius: 8px;
        }
        .related-links a:hover {
            background-color: rgba(106, 17, 203, 0.05);
            color: var(--primary);
            padding-left: 15px;
        }
        .related-links i {
            color: var(--secondary);
            width: 20px;
        }
        .site-footer {
            background: linear-gradient(135deg, #1a1a2e, #16213e);
            color: white;
            margin-top: 80px;
            padding: 60px 0 30px;
        }
        .footer-container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            color: white;
            font-size: 1.4rem;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-section h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 3px;
            background-color: var(--accent);
        }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            margin: 15px 0;
        }
        .friend-link {
            background-color: rgba(255, 255, 255, 0.1);
            padding: 10px 20px;
            border-radius: 6px;
            text-decoration: none;
            color: #ddd;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .friend-link:hover {
            background-color: rgba(255, 77, 148, 0.2);
            color: white;
            border-color: var(--accent);
            transform: translateY(-3px);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 1024px) {
            .container {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .sidebar {
                position: static;
            }
            h1 {
                font-size: 2.4rem;
            }
            h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                height: 70px;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .my-logo {
                font-size: 1.8rem;
            }
            .main-article {
                padding: 25px;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            h3 {
                font-size: 1.4rem;
            }
            body {
                font-size: 16px;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            .header-container, .container, .breadcrumb, .footer-container {
                padding: 0 15px;
            }
            .main-article {
                padding: 20px 15px;
            }
            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 15px;
            }
            .search-form {
                flex-direction: column;
            }
            .search-input, .search-button {
                border-radius: 50px;
                margin-bottom: 10px;
                width: 100%;
            }
            .cta-button {
                width: 100%;
                text-align: center;
            }
        }
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-in {
            animation: fadeInUp 0.6s ease-out;
        }
        .content-section {
            margin-bottom: 50px;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .stat-card {
            background: white;
            border-radius: var(--border-radius);
            padding: 25px;
            box-shadow: 0 5px 15px var(--shadow);
            border-top: 5px solid var(--primary);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .stat-value {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 10px;
        }
        .stat-label {
            color: var(--light-text);
            font-weight: 600;
        }
        blockquote {
            border-left: 5px solid var(--accent);
            padding: 25px;
            margin: 30px 0;
            background-color: #fef5ff;
            border-radius: 0 10px 10px 0;
            font-style: italic;
            position: relative;
        }
        blockquote::before {
            content: "“";
            font-size: 4rem;
            color: var(--accent);
            opacity: 0.3;
            position: absolute;
            top: -20px;
            left: 10px;
        }
        .tip-box {
            background-color: #e8f4ff;
            border: 1px solid #b6daff;
            border-radius: var(--border-radius);
            padding: 25px;
            margin: 30px 0;
            position: relative;
            padding-left: 70px;
        }
        .tip-box::before {
            content: "\f0eb";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 25px;
            top: 25px;
            font-size: 2rem;
            color: var(--secondary);
        }
        .key-term {
            background-color: #fff0f7;
            color: #c2185b;
            padding: 3px 8px;
            border-radius: 4px;
            font-weight: 600;
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 30px 0;
            box-shadow: 0 5px 15px var(--shadow);
            border-radius: var(--border-radius);
            overflow: hidden;
        }
        .comparison-table th {
            background-color: var(--primary);
            color: white;
            padding: 20px;
            text-align: left;
        }
        .comparison-table td {
            padding: 18px 20px;
            border-bottom: 1px solid var(--border);
        }
        .comparison-table tr:nth-child(even) {
            background-color: var(--section-bg);
        }
        .comparison-table tr:hover {
            background-color: #f0f4ff;
        }