:root {
            --primary-color: #6a11cb;
            --secondary-color: #2575fc;
            --accent-color: #ff4b6e;
            --dark-color: #1a1a2e;
            --light-color: #f8f9fa;
            --gray-color: #6c757d;
            --text-color: #333;
            --text-light: #f8f9fa;
            --border-radius: 12px;
            --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            --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-color);
            background-color: #f5f7ff;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        ul, ol {
            list-style-position: inside;
            margin-left: 1.2rem;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--border-radius);
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        header {
            background: linear-gradient(135deg, var(--dark-color) 0%, #16213e 100%);
            color: var(--text-light);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            background: linear-gradient(to right, #6a11cb, #2575fc);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .my-logo i {
            font-size: 2rem;
            color: #ff4b6e;
        }
        .my-logo:hover {
            transform: scale(1.03);
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            gap: 2rem;
        }
        .nav-links a {
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .nav-links a:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-color);
            transition: var(--transition);
        }
        .nav-links a:hover:after,
        .nav-links a.active:after {
            width: 100%;
        }
        .nav-links a:hover {
            color: var(--accent-color);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: var(--text-light);
            border-radius: 2px;
            transition: var(--transition);
        }
        .breadcrumb {
            background-color: rgba(255, 255, 255, 0.05);
            padding: 0.8rem 0;
            font-size: 0.9rem;
            margin-top: 0.5rem;
        }
        .breadcrumb ul {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin: 0;
        }
        .breadcrumb li {
            display: inline;
        }
        .breadcrumb li:not(:last-child):after {
            content: '›';
            margin-left: 0.5rem;
            color: var(--gray-color);
        }
        .breadcrumb a:hover {
            color: var(--accent-color);
        }
        main {
            padding: 2.5rem 0;
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin: 2rem auto;
            position: relative;
            overflow: hidden;
        }
        .main-container {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .main-container {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            padding-right: 1rem;
        }
        .sidebar {
            background: linear-gradient(180deg, #f8f9fa 0%, #e9ecef 100%);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            height: fit-content;
            position: sticky;
            top: 120px;
        }
        .sidebar h3 {
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--primary-color);
            color: var(--dark-color);
        }
        .sidebar ul {
            list-style: none;
            margin-left: 0;
        }
        .sidebar li {
            margin-bottom: 0.8rem;
        }
        .sidebar a {
            display: block;
            padding: 0.7rem 1rem;
            background-color: white;
            border-radius: 8px;
            border-left: 4px solid var(--secondary-color);
            transition: var(--transition);
        }
        .sidebar a:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateX(5px);
            border-left-color: var(--accent-color);
        }
        h1, h2, h3, h4 {
            color: var(--dark-color);
            margin-top: 2rem;
            margin-bottom: 1rem;
            line-height: 1.3;
            font-weight: 700;
        }
        h1 {
            font-size: 2.8rem;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid var(--accent-color);
            margin-top: 0;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-color);
            padding-left: 0.5rem;
            border-left: 5px solid var(--accent-color);
        }
        h3 {
            font-size: 1.6rem;
            color: var(--secondary-color);
        }
        h4 {
            font-size: 1.3rem;
            color: var(--dark-color);
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 500;
            color: var(--dark-color);
            background-color: #f0f4ff;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            border-left: 5px solid var(--primary-color);
            margin-bottom: 2rem;
        }
        .highlight {
            background-color: #fffacd;
            padding: 0.2rem 0.4rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .info-box {
            background: linear-gradient(135deg, #e3f2fd, #bbdefb);
            border-left: 5px solid #2196f3;
            padding: 1.5rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            margin: 2rem 0;
        }
        .warning-box {
            background: linear-gradient(135deg, #ffebee, #ffcdd2);
            border-left: 5px solid #f44336;
            padding: 1.5rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            margin: 2rem 0;
        }
        .tip-box {
            background: linear-gradient(135deg, #e8f5e9, #c8e6c9);
            border-left: 5px solid #4caf50;
            padding: 1.5rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            margin: 2rem 0;
        }
        .search-section {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            padding: 2rem;
            border-radius: var(--border-radius);
            color: white;
            margin-bottom: 3rem;
            text-align: center;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 1rem auto 0;
        }
        .search-form input {
            flex: 1;
            padding: 0.9rem 1.2rem;
            border: none;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--accent-color);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: #ff2e4f;
        }
        .rating-section, .comments-section {
            margin: 3rem 0;
            padding: 2rem;
            background-color: #f8f9fa;
            border-radius: var(--border-radius);
            border: 1px solid #dee2e6;
        }
        .rating-form, .comment-form {
            display: grid;
            gap: 1rem;
            margin-top: 1.5rem;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #ffd700;
            cursor: pointer;
        }
        .star:hover {
            transform: scale(1.2);
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .form-group label {
            font-weight: 600;
            color: var(--dark-color);
        }
        .form-group input,
        .form-group textarea {
            padding: 0.8rem 1rem;
            border: 1px solid #ced4da;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(106, 17, 203, 0.1);
        }
        .btn {
            display: inline-block;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            padding: 0.9rem 1.8rem;
            border: none;
            border-radius: var(--border-radius);
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(106, 17, 203, 0.2);
        }
        .btn-accent {
            background: linear-gradient(135deg, var(--accent-color), #ff6b8b);
        }
        .btn-accent:hover {
            box-shadow: 0 7px 14px rgba(255, 75, 110, 0.3);
        }
        .article-image {
            margin: 2.5rem auto;
            text-align: center;
            position: relative;
        }
        .article-image img {
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .article-image img:hover {
            transform: scale(1.02);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
        }
        .image-caption {
            font-style: italic;
            color: var(--gray-color);
            font-size: 0.9rem;
            margin-top: 0.5rem;
            text-align: center;
        }
        .content-link {
            color: var(--secondary-color);
            font-weight: 600;
            border-bottom: 1px dashed var(--secondary-color);
        }
        .content-link:hover {
            color: var(--accent-color);
            border-bottom: 1px solid var(--accent-color);
        }
        footer {
            background-color: var(--dark-color);
            color: var(--text-light);
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-section h3 {
            color: white;
            font-size: 1.4rem;
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--accent-color);
        }
        .footer-links {
            list-style: none;
            margin-left: 0;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a:hover {
            color: var(--accent-color);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255, 255, 255, 0.05);
            padding: 1rem;
            border-radius: 8px;
            margin-bottom: 1rem;
            border-left: 4px solid var(--primary-color);
        }
        friend-link:hover {
            background-color: rgba(255, 255, 255, 0.1);
            border-left-color: var(--accent-color);
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
            color: #aaa;
        }
        .update-time {
            background-color: #fff3cd;
            color: #856404;
            padding: 0.8rem 1.2rem;
            border-radius: var(--border-radius);
            border: 1px solid #ffeaa7;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 2rem;
        }
        @media (max-width: 768px) {
            html {
                font-size: 14px;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .nav-links {
                position: fixed;
                top: 70px;
                left: -100%;
                flex-direction: column;
                background-color: var(--dark-color);
                width: 100%;
                text-align: center;
                transition: var(--transition);
                box-shadow: 0 10px 15px rgba(0, 0, 0, 0.2);
                padding: 2rem 0;
                gap: 0;
                z-index: 999;
            }
            .nav-links.active {
                left: 0;
            }
            .nav-links li {
                margin: 1rem 0;
            }
            .hamburger {
                display: flex;
            }
            .hamburger.active span:nth-child(1) {
                transform: rotate(45deg) translate(6px, 6px);
            }
            .hamburger.active span:nth-child(2) {
                opacity: 0;
            }
            .hamburger.active span:nth-child(3) {
                transform: rotate(-45deg) translate(6px, -6px);
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input,
            .search-form button {
                border-radius: var(--border-radius);
                width: 100%;
            }
            .search-form input {
                margin-bottom: 0.5rem;
            }
        }