:root {
            --primary-color: #4a00e0;
            --secondary-color: #8e2de2;
            --accent-color: #ff3366;
            --dark-color: #1a1a2e;
            --light-color: #f8f9fa;
            --text-color: #333;
            --text-light: #666;
            --border-color: #e0e0e0;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
            --border-radius: 8px;
            --container-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: var(--light-color);
            overflow-x: hidden;
        }
        header {
            background: linear-gradient(135deg, var(--dark-color), var(--primary-color));
            color: white;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 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-size: 1.8rem;
            font-weight: 800;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .my-logo:hover {
            color: var(--accent-color);
            transform: translateY(-2px);
        }
        .my-logo i {
            color: var(--accent-color);
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .nav-links a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 10px 0;
            position: relative;
            transition: var(--transition);
        }
        .nav-links a:hover {
            color: var(--accent-color);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--accent-color);
            transition: var(--transition);
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: white;
            border-radius: 2px;
            transition: var(--transition);
        }
        .breadcrumb {
            background-color: #f5f5f5;
            padding: 15px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb-container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .breadcrumb-links {
            display: flex;
            list-style: none;
            gap: 10px;
            flex-wrap: wrap;
        }
        .breadcrumb-links li {
            display: flex;
            align-items: center;
        }
        .breadcrumb-links a {
            color: var(--text-light);
            text-decoration: none;
            transition: var(--transition);
        }
        .breadcrumb-links a:hover {
            color: var(--primary-color);
        }
        .breadcrumb-links i {
            margin: 0 8px;
            color: var(--text-light);
            font-size: 0.8rem;
        }
        main {
            max-width: var(--container-width);
            margin: 40px auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        article {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 40px;
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 2.8rem;
            color: var(--dark-color);
            margin-bottom: 20px;
            line-height: 1.2;
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            border-bottom: 2px solid var(--border-color);
            margin-bottom: 30px;
            color: var(--text-light);
            font-size: 0.9rem;
        }
        .update-time {
            color: var(--accent-color);
            font-weight: 600;
        }
        h2 {
            font-size: 2rem;
            color: var(--dark-color);
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 3px solid var(--secondary-color);
        }
        h3 {
            font-size: 1.6rem;
            color: var(--primary-color);
            margin: 30px 0 15px;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--secondary-color);
            margin: 25px 0 12px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            line-height: 1.8;
        }
        .lead {
            font-size: 1.3rem;
            color: var(--primary-color);
            font-weight: 600;
            margin: 30px 0;
            padding-left: 20px;
            border-left: 4px solid var(--accent-color);
        }
        strong {
            color: var(--dark-color);
            font-weight: 700;
        }
        em {
            color: var(--secondary-color);
            font-style: italic;
        }
        a.content-link {
            color: var(--primary-color);
            text-decoration: none;
            border-bottom: 1px dotted var(--primary-color);
            transition: var(--transition);
        }
        a.content-link:hover {
            color: var(--accent-color);
            border-bottom: 1px solid var(--accent-color);
        }
        .highlight-box {
            background: linear-gradient(135deg, #f5f7ff, #f0f2ff);
            border-left: 5px solid var(--primary-color);
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            box-shadow: var(--shadow);
        }
        .feature-list {
            list-style: none;
            margin: 25px 0;
        }
        .feature-list li {
            padding: 12px 0 12px 40px;
            position: relative;
        }
        .feature-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            top: 12px;
            width: 25px;
            height: 25px;
            background-color: var(--secondary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }
        .image-container {
            margin: 40px 0;
            text-align: center;
        }
        .article-img {
            max-width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .article-img:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(0,0,0,0.15);
        }
        .img-caption {
            margin-top: 10px;
            font-style: italic;
            color: var(--text-light);
            font-size: 0.9rem;
        }
        .interactive-section {
            background: linear-gradient(135deg, #fff8f8, #fff);
            border-radius: var(--border-radius);
            padding: 30px;
            margin: 40px 0;
            border: 2px solid var(--border-color);
        }
        .section-title {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 25px;
            color: var(--primary-color);
        }
        .section-title i {
            font-size: 1.8rem;
            color: var(--accent-color);
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        label {
            font-weight: 600;
            color: var(--dark-color);
        }
        input, textarea, select {
            padding: 12px 15px;
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(74, 0, 224, 0.1);
        }
        textarea {
            min-height: 120px;
            resize: vertical;
        }
        .rating-stars {
            display: flex;
            gap: 10px;
            margin: 10px 0;
        }
        .star {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover, .star.active {
            color: #ffc107;
        }
        button, .btn {
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            color: white;
            border: none;
            padding: 14px 28px;
            border-radius: var(--border-radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            text-decoration: none;
            display: inline-block;
            font-size: 1rem;
        }
        button:hover, .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 20px rgba(74, 0, 224, 0.3);
        }
        .btn-accent {
            background: linear-gradient(to right, var(--accent-color), #ff6b9d);
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 25px;
            box-shadow: var(--shadow);
        }
        .widget-title {
            font-size: 1.4rem;
            color: var(--dark-color);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-color);
        }
        .quick-links {
            list-style: none;
        }
        .quick-links li {
            margin-bottom: 12px;
        }
        .quick-links a {
            color: var(--text-color);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 15px;
            border-radius: var(--border-radius);
            transition: var(--transition);
            border-left: 3px solid transparent;
        }
        .quick-links a:hover {
            background-color: #f8f5ff;
            border-left-color: var(--primary-color);
            color: var(--primary-color);
        }
        .quick-links i {
            color: var(--secondary-color);
            width: 20px;
        }
        .popular-topics {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
            gap: 15px;
        }
        .topic-tag {
            background: linear-gradient(135deg, #f0f2ff, #e6e9ff);
            color: var(--primary-color);
            padding: 10px 15px;
            border-radius: 30px;
            text-decoration: none;
            font-size: 0.9rem;
            text-align: center;
            transition: var(--transition);
            border: 1px solid #e0e0ff;
        }
        .topic-tag:hover {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            transform: translateY(-3px);
        }
        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 60px 0 30px;
            margin-top: 60px;
        }
        .footer-container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
        }
        .footer-column h3 {
            color: white;
            font-size: 1.4rem;
            margin-bottom: 25px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--secondary-color);
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-links a:hover {
            color: white;
            transform: translateX(5px);
        }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            margin: 20px 0;
        }
        friend-link {
            background-color: rgba(255,255,255,0.1);
            padding: 10px 20px;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        friend-link a {
            color: white;
            text-decoration: none;
        }
        friend-link:hover {
            background-color: rgba(255,255,255,0.2);
            transform: translateY(-3px);
        }
        .copyright {
            text-align: center;
            padding-top: 40px;
            margin-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            .nav-links {
                position: fixed;
                top: 80px;
                left: 0;
                width: 100%;
                background-color: var(--dark-color);
                flex-direction: column;
                align-items: center;
                padding: 20px 0;
                gap: 0;
                clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
                transition: var(--transition);
                box-shadow: var(--shadow);
            }
            .nav-links.active {
                clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
            }
            .nav-links li {
                width: 100%;
                text-align: center;
            }
            .nav-links a {
                display: block;
                padding: 15px 20px;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            .hamburger {
                display: flex;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                height: 70px;
            }
            article {
                padding: 25px;
            }
            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .footer-container {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .popular-topics {
                grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.5s ease forwards;
        }
        .text-center {
            text-align: center;
        }
        .mt-40 {
            margin-top: 40px;
        }
        .mb-40 {
            margin-bottom: 40px;
        }
        .p-30 {
            padding: 30px;
        }
        .gradient-text {
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            font-weight: 700;
        }