* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #2c3e50;
            --secondary: #e74c3c;
            --accent: #3498db;
            --light: #ecf0f1;
            --dark: #2c3e50;
            --gray: #95a5a6;
            --success: #27ae60;
            --warning: #f39c12;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f9f9f9;
            overflow-x: hidden;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary) 0%, var(--dark) 100%);
            color: white;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-top {
            padding: 15px 0;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .logo-container {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            background: linear-gradient(90deg, var(--secondary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            transition: var(--transition);
        }
        .my-logo:hover {
            transform: scale(1.05);
        }
        .domain {
            font-size: 0.9rem;
            color: var(--light);
            opacity: 0.8;
        }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .main-nav {
            display: flex;
            gap: 30px;
        }
        .nav-link {
            color: white;
            font-weight: 600;
            padding: 8px 15px;
            border-radius: 4px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-link:hover {
            background: rgba(255,255,255,0.1);
            color: white;
        }
        .nav-link.active {
            background: var(--accent);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 10px;
        }
        .breadcrumb {
            padding: 15px 0;
            background: var(--light);
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 10px;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin-left: 10px;
            color: var(--gray);
        }
        .search-section {
            background: white;
            padding: 40px 0;
            margin: 20px 0;
            border-radius: 10px;
            box-shadow: var(--shadow);
            text-align: center;
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
            gap: 10px;
        }
        .search-input {
            flex: 1;
            padding: 15px 20px;
            border: 2px solid #ddd;
            border-radius: 50px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-input:focus {
            outline: none;
            border-color: var(--accent);
        }
        .search-btn {
            background: linear-gradient(135deg, var(--accent), var(--secondary));
            color: white;
            border: none;
            padding: 0 30px;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(52, 152, 219, 0.3);
        }
        main {
            padding: 40px 0;
            background: white;
            border-radius: 10px;
            box-shadow: var(--shadow);
            margin: 20px 0;
        }
        article {
            padding: 0 30px;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 25px;
            line-height: 1.2;
            text-align: center;
        }
        h2 {
            font-size: 2rem;
            color: var(--dark);
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 3px solid var(--accent);
        }
        h3 {
            font-size: 1.6rem;
            color: var(--primary);
            margin: 30px 0 15px;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--dark);
            margin: 25px 0 12px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--primary);
            margin: 30px 0;
            padding-left: 20px;
            border-left: 4px solid var(--accent);
        }
        .feature-image {
            width: 100%;
            height: 400px;
            object-fit: cover;
            border-radius: 10px;
            margin: 30px 0;
            box-shadow: var(--shadow);
        }
        .highlight {
            background: linear-gradient(135deg, rgba(52, 152, 219, 0.1), rgba(231, 76, 60, 0.1));
            padding: 25px;
            border-radius: 10px;
            margin: 30px 0;
            border-left: 5px solid var(--accent);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin: 40px 0;
        }
        .stat-card {
            background: white;
            padding: 25px;
            border-radius: 10px;
            text-align: center;
            box-shadow: var(--shadow);
            border-top: 4px solid var(--accent);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--secondary);
            margin-bottom: 10px;
        }
        .related-links {
            background: var(--light);
            padding: 30px;
            border-radius: 10px;
            margin: 40px 0;
        }
        .related-links h3 {
            margin-top: 0;
        }
        .links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 15px;
            margin-top: 20px;
        }
        .link-card {
            background: white;
            padding: 15px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            gap: 15px;
            transition: var(--transition);
        }
        .link-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }
        .link-card i {
            color: var(--accent);
            font-size: 1.2rem;
        }
        .user-interaction {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin: 50px 0;
        }
        .comment-section, .rating-section {
            background: var(--light);
            padding: 25px;
            border-radius: 10px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--accent);
        }
        textarea.form-control {
            min-height: 120px;
            resize: vertical;
        }
        .submit-btn {
            background: linear-gradient(135deg, var(--accent), var(--secondary));
            color: white;
            border: none;
            padding: 12px 30px;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .submit-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(52, 152, 219, 0.3);
        }
        .star-rating {
            display: flex;
            gap: 10px;
            margin: 15px 0;
        }
        .star {
            color: var(--gray);
            font-size: 1.5rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover, .star.active {
            color: var(--warning);
        }
        footer {
            background: var(--primary);
            color: white;
            padding: 50px 0 20px;
            margin-top: 50px;
        }
        .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: 1.3rem;
            margin-bottom: 20px;
            border-bottom: 2px solid var(--accent);
            padding-bottom: 10px;
        }
        .friend-links {
            background: rgba(255,255,255,0.1);
            padding: 20px;
            border-radius: 8px;
            margin: 20px 0;
        }
        .friend-links a {
            color: var(--light);
            display: block;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .friend-links a:last-child {
            border-bottom: none;
        }
        .friend-links a:hover {
            color: white;
            padding-left: 10px;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: var(--light);
        }
        .update-time {
            background: rgba(39, 174, 96, 0.1);
            padding: 10px 20px;
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin: 20px 0;
            color: var(--success);
        }
        @media (max-width: 992px) {
            h1 {
                font-size: 2.3rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .main-nav {
                gap: 15px;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 100px;
                left: -100%;
                width: 100%;
                background: var(--primary);
                flex-direction: column;
                padding: 20px;
                transition: var(--transition);
                box-shadow: var(--shadow);
            }
            .main-nav.active {
                left: 0;
            }
            .nav-link {
                padding: 15px;
                justify-content: center;
            }
            .search-form {
                flex-direction: column;
            }
            .search-btn {
                padding: 15px;
            }
            article {
                padding: 0 15px;
            }
            .feature-image {
                height: 250px;
            }
        }
        @media (max-width: 576px) {
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .container {
                padding: 0 15px;
            }
            .stat-card {
                padding: 20px 15px;
            }
            .user-interaction {
                grid-template-columns: 1fr;
            }
        }
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-in {
            animation: fadeIn 0.8s ease-out;
        }
        .text-center {
            text-align: center;
        }
        .text-bold {
            font-weight: 700;
        }
        .text-accent {
            color: var(--accent);
        }
        .text-secondary {
            color: var(--secondary);
        }
        .mb-30 {
            margin-bottom: 30px;
        }
        .mt-30 {
            margin-top: 30px;
        }
        .flex {
            display: flex;
        }
        .justify-between {
            justify-content: space-between;
        }
        .align-center {
            align-items: center;
        }
        .emoji {
            font-size: 1.2em;
            margin: 0 5px;
        }
        .content-block {
            padding: 25px;
            background: white;
            border-radius: 10px;
            margin: 25px 0;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
        }
        .tip-box {
            background: linear-gradient(135deg, rgba(243, 156, 18, 0.1), rgba(241, 196, 15, 0.1));
            border-left: 4px solid var(--warning);
            padding: 20px;
            border-radius: 8px;
            margin: 25px 0;
        }
        .tip-box h4 {
            margin-top: 0;
            color: var(--warning);
        }
        .article-structure {
            background: var(--light);
            padding: 20px;
            border-radius: 10px;
            margin: 30px 0;
        }
        .toc {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 15px;
            margin-top: 15px;
        }
        .toc a {
            color: var(--dark);
            padding: 10px;
            background: white;
            border-radius: 6px;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .toc a:hover {
            background: var(--accent);
            color: white;
            transform: translateX(5px);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
            margin: 40px 0;
        }
        .feature-item {
            background: white;
            padding: 25px;
            border-radius: 10px;
            text-align: center;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .feature-item:hover {
            transform: translateY(-5px);
        }
        .feature-icon {
            font-size: 2.5rem;
            color: var(--accent);
            margin-bottom: 15px;
        }