* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'PingFang SC', 'Helvetica Neue', 'Microsoft YaHei', Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: white;
            min-height: 100vh;
            box-shadow: 0 0 20px rgba(0,0,0,0.1);
        }
        
        /* 头部导航 */
        .header {
            background: linear-gradient(135deg, #ee7752, #e73c7e, #23a6d5, #23d5ab);
            background-size: 400% 400%;
            animation: gradientBG 15s ease infinite;
            color: white;
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        
        @keyframes gradientBG {
            0% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
            100% { background-position: 0% 50%; }
        }
        
        .header-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .logo {
            font-size: 24px;
            font-weight: bold;
            text-decoration: none;
            color: white;
        }
        
        .nav-menu {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        
        .nav-link {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: opacity 0.3s;
        }
        
        .nav-link:hover {
            opacity: 0.8;
        }
        
        .mobile-menu {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 24px;
            cursor: pointer;
        }
        
        /* 面包屑导航 */
        .breadcrumb {
            background: #f8f9fa;
            padding: 12px 20px;
            border-bottom: 1px solid #e9ecef;
        }
        
        .breadcrumb-list {
            display: flex;
            list-style: none;
            font-size: 14px;
            flex-wrap: wrap;
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .breadcrumb-item {
            display: flex;
            align-items: center;
        }
        
        .breadcrumb-item:not(:last-child)::after {
            content: ">";
            margin: 0 8px;
            color: #6c757d;
        }
        
        .breadcrumb-link {
            color: #007bff;
            text-decoration: none;
        }
        
        .breadcrumb-link:hover {
            text-decoration: underline;
        }
        
        /* 主要内容区域 */
        .main-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* APP基本信息卡片 */
        .app-header {
            background: white;
            padding: 30px;
            margin: 20px 0;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.08);
            border: 1px solid #e9ecef;
        }
        
        .app-info {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            margin-bottom: 25px;
        }
        
        .app-icon {
            width: 100px;
            height: 100px;
            border-radius: 20px;
            box-shadow: 0 8px 25px rgba(0,0,0,0.15);
            flex-shrink: 0;
        }
        
        .app-details {
            flex: 1;
            min-width: 0;
        }
        
        .app-name {
            font-size: 28px;
            font-weight: bold;
            margin-bottom: 8px;
            color: #2c3e50;
        }
        
        .app-subtitle {
            font-size: 16px;
            color: #7f8c8d;
            margin-bottom: 15px;
        }
        
        .app-meta {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
            gap: 15px;
            font-size: 14px;
            margin-bottom: 15px;
        }
        
        .meta-item {
            display: flex;
            flex-direction: column;
        }
        
        .meta-label {
            color: #7f8c8d;
            margin-bottom: 3px;
        }
        
        .meta-value {
            font-weight: 600;
            color: #2c3e50;
        }
        
        .app-rating {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 15px;
        }
        
        .stars {
            color: #ffa500;
            font-size: 18px;
        }
        
        .rating-text {
            font-weight: 600;
            color: #2c3e50;
        }
        
        .rating-count {
            color: #7f8c8d;
            font-size: 14px;
        }
        
        .app-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        
        .tag {
            background: #e3f2fd;
            color: #1976d2;
            padding: 6px 12px;
            border-radius: 16px;
            font-size: 12px;
            font-weight: 500;
        }
        
        .tag.hot {
            background: #ffebee;
            color: #d32f2f;
        }
        
        .tag.free {
            background: #e8f5e8;
            color: #388e3c;
        }
        
        .tag.official {
            background: #fff3e0;
            color: #f57c00;
        }
        
        /* 下载按钮区域 */
        .download-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            padding: 25px;
            border-radius: 12px;
            text-align: center;
            margin-top: 25px;
        }
        
        .download-btn {
            width: 100%;
            max-width: 400px;
            background: #ff6b6b;
            color: white;
            border: none;
            padding: 18px 30px;
            border-radius: 50px;
            font-size: 18px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
            margin-bottom: 15px;
            box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
        }
        
        .download-btn:hover {
            background: #ff5252;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 107, 107, 0.4);
        }
        
        .download-btn:active {
            transform: translateY(0);
        }
        
        .download-info {
            display: flex;
            justify-content: center;
            gap: 20px;
            color: rgba(255,255,255,0.9);
            font-size: 14px;
            flex-wrap: wrap;
        }
        
        .download-info span {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        
        /* 安全保障 */
        .security-badges {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-top: 15px;
            flex-wrap: wrap;
        }
        
        .security-badge {
            display: flex;
            align-items: center;
            gap: 5px;
            background: rgba(255,255,255,0.2);
            padding: 8px 15px;
            border-radius: 20px;
            font-size: 12px;
            color: white;
        }
        
        /* 应用截图 */
        .screenshots-section {
            background: white;
            padding: 30px;
            margin: 20px 0;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.08);
            border: 1px solid #e9ecef;
        }
        
        .section-title {
            font-size: 22px;
            font-weight: bold;
            margin-bottom: 20px;
            color: #2c3e50;
            position: relative;
            padding-left: 15px;
        }
        
        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 20px;
            background: linear-gradient(135deg, #667eea, #764ba2);
            border-radius: 2px;
        }
        
        .screenshots-container {
            display: flex;
            gap: 15px;
            overflow-x: auto;
            padding-bottom: 15px;
            scroll-behavior: smooth;
        }
        
        .screenshot-item {
            flex-shrink: 0;
            width: 200px;
            height: 356px;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 25px rgba(0,0,0,0.15);
            cursor: pointer;
            transition: transform 0.3s ease;
            position: relative;
        }
        
        .screenshot-item:hover {
            transform: scale(1.05);
        }
        
        .screenshot-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        
        .screenshot-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            transition: opacity 0.3s;
            color: white;
            font-size: 24px;
        }
        
        .screenshot-item:hover .screenshot-overlay {
            opacity: 1;
        }
        
        /* 应用介绍 */
        .description-section {
            background: white;
            padding: 30px;
            margin: 20px 0;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.08);
            border: 1px solid #e9ecef;
        }
        
        .description-text {
            font-size: 16px;
            line-height: 1.8;
            color: #555;
            margin-bottom: 25px;
        }
        
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
            margin-bottom: 25px;
        }
        
        .feature-card {
            background: #f8f9fa;
            padding: 20px;
            border-radius: 10px;
            border-left: 4px solid #007bff;
        }
        
        .feature-title {
            font-size: 16px;
            font-weight: bold;
            margin-bottom: 10px;
            color: #2c3e50;
        }
        
        .feature-desc {
            font-size: 14px;
            color: #6c757d;
            line-height: 1.6;
        }
        
        .features-list {
            list-style: none;
            margin-bottom: 25px;
        }
        
        .features-list li {
            padding: 10px 0;
            position: relative;
            padding-left: 30px;
            font-size: 15px;
            color: #555;
        }
        
        .features-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            top: 10px;
            color: #28a745;
            font-weight: bold;
            font-size: 16px;
        }
        
        /* 版本信息 */
        .version-section {
            background: white;
            padding: 30px;
            margin: 20px 0;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.08);
            border: 1px solid #e9ecef;
        }
        
        .version-info {
            background: linear-gradient(135deg, #f8f9fa, #e9ecef);
            padding: 20px;
            border-radius: 10px;
            border: 1px solid #dee2e6;
            margin-bottom: 20px;
        }
        
        .version-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
            flex-wrap: wrap;
            gap: 10px;
        }
        
        .version-number {
            font-size: 18px;
            font-weight: bold;
            color: #007bff;
        }
        
        .version-date {
            color: #6c757d;
            font-size: 14px;
        }
        
        .version-size {
            background: #e3f2fd;
            color: #1976d2;
            padding: 4px 12px;
            border-radius: 12px;
            font-size: 12px;
        }
        
        .update-list {
            list-style: none;
        }
        
        .update-list li {
            padding: 8px 0;
            position: relative;
            padding-left: 25px;
            color: #555;
        }
        
        .update-list li::before {
            content: "•";
            position: absolute;
            left: 0;
            color: #007bff;
            font-weight: bold;
        }
        
        /* 用户评价 */
        .reviews-section {
            background: white;
            padding: 30px;
            margin: 20px 0;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.08);
            border: 1px solid #e9ecef;
        }
        
        .review-summary {
            display: grid;
            grid-template-columns: auto 1fr;
            gap: 30px;
            margin-bottom: 30px;
            align-items: center;
        }
        
        .review-score {
            text-align: center;
            padding: 20px;
            background: linear-gradient(135deg, #f8f9fa, #e9ecef);
            border-radius: 12px;
        }
        
        .score-number {
            font-size: 48px;
            font-weight: bold;
            color: #007bff;
            margin-bottom: 5px;
        }
        
        .score-stars {
            color: #ffa500;
            font-size: 20px;
            margin-bottom: 5px;
        }
        
        .score-total {
            font-size: 14px;
            color: #6c757d;
        }
        
        .rating-bars {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        
        .rating-bar {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .rating-label {
            width: 40px;
            font-size: 14px;
            color: #6c757d;
        }
        
        .progress-container {
            flex: 1;
            height: 8px;
            background: #e9ecef;
            border-radius: 4px;
            overflow: hidden;
        }
        
        .progress-fill {
            height: 100%;
            background: linear-gradient(90deg, #ffa500, #ff6b6b);
            transition: width 0.8s ease;
        }
        
        .rating-count {
            width: 80px;
            font-size: 12px;
            color: #6c757d;
            text-align: right;
        }
        
        .reviews-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        
        .review-item {
            padding: 20px;
            background: #f8f9fa;
            border-radius: 10px;
            border: 1px solid #e9ecef;
        }
        
        .review-header {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 12px;
        }
        
        .user-avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }
        
        .user-info {
            flex: 1;
        }
        
        .user-name {
            font-weight: 600;
            color: #2c3e50;
            margin-bottom: 3px;
        }
        
        .review-date {
            font-size: 12px;
            color: #6c757d;
        }
        
        .review-rating {
            color: #ffa500;
            font-size: 16px;
        }
        
        .review-content {
            font-size: 15px;
            line-height: 1.6;
            color: #555;
        }
        
        /* 相关推荐 */
        .related-section {
            background: white;
            padding: 30px;
            margin: 20px 0;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.08);
            border: 1px solid #e9ecef;
        }
        
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
        }
        
        .related-app {
            display: flex;
            align-items: center;
            padding: 20px;
            background: #f8f9fa;
            border-radius: 12px;
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
            border: 1px solid #e9ecef;
        }
        
        .related-app:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(0,0,0,0.15);
            text-decoration: none;
            color: inherit;
        }
        
        .related-icon {
            width: 60px;
            height: 60px;
            border-radius: 12px;
            margin-right: 15px;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        
        .related-info {
            flex: 1;
            min-width: 0;
        }
        
        .related-name {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 5px;
            color: #2c3e50;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        
        .related-desc {
            font-size: 13px;
            color: #6c757d;
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        
        .related-meta {
            display: flex;
            gap: 10px;
            font-size: 12px;
        }
        
        .related-rating {
            color: #ffa500;
        }
        
        .related-size {
            color: #6c757d;
        }
        
        .related-download {
            background: #007bff;
            color: white;
            border: none;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 12px;
            cursor: pointer;
            white-space: nowrap;
            transition: background 0.3s;
        }
        
        .related-download:hover {
            background: #0056b3;
        }
        
        /* 底部信息 */
        .footer {
            background: #2c3e50;
            color: white;
            padding: 40px 20px 20px;
            margin-top: 40px;
        }
        
        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        
        .footer-section h4 {
            margin-bottom: 15px;
            color: #ecf0f1;
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 8px;
        }
        
        .footer-links a {
            color: #bdc3c7;
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .footer-links a:hover {
            color: white;
        }
        
        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #34495e;
            color: #95a5a6;
            font-size: 14px;
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .container {
                box-shadow: none;
            }
            
            .header-content {
                padding: 0 15px;
            }
            
            .nav-menu {
                display: none;
            }
            
            .mobile-menu {
                display: block;
            }
            
            .main-content {
                padding: 0 15px;
            }
            
            .app-header,
            .screenshots-section,
            .description-section,
            .version-section,
            .reviews-section,
            .related-section {
                padding: 20px 15px;
                margin: 15px 0;
            }
            
            .app-info {
                flex-direction: column;
                text-align: center;
                gap: 15px;
            }
            
            .app-icon {
                width: 80px;
                height: 80px;
                align-self: center;
            }
            
            .app-name {
                font-size: 24px;
            }
            
            .app-meta {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            
            .download-btn {
                font-size: 16px;
                padding: 15px 25px;
            }
            
            .download-info {
                justify-content: center;
                gap: 15px;
            }
            
            .security-badges {
                gap: 10px;
            }
            
            .screenshots-container {
                gap: 10px;
            }
            
            .screenshot-item {
                width: 160px;
                height: 285px;
            }
            
            .features-grid {
                grid-template-columns: 1fr;
                gap: 15px;
            }
            
            .review-summary {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            
            .rating-bars {
                gap: 6px;
            }
            
            .related-grid {
                grid-template-columns: 1fr;
                gap: 15px;
            }
            
            .related-app {
                padding: 15px;
            }
            
            .related-icon {
                width: 50px;
                height: 50px;
            }
            
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        
        @media (max-width: 480px) {
            .app-meta {
                grid-template-columns: 1fr;
            }
            
            .version-header {
                flex-direction: column;
                align-items: flex-start;
            }
            
            .footer-grid {
                grid-template-columns: 1fr;
            }
            
            .breadcrumb {
                padding: 10px 15px;
            }
        }
        
        /* 加载动画 */
        .loading {
            display: inline-block;
            width: 20px;
            height: 20px;
            border: 3px solid #f3f3f3;
            border-top: 3px solid #007bff;
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }
        
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        
        /* 图片查看器 */
        .image-viewer {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.9);
            z-index: 9999;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }
        
        .image-viewer.active {
            opacity: 1;
            visibility: visible;
        }
        
        .viewer-content {
            max-width: 90%;
            max-height: 90%;
            position: relative;
        }
        
        .viewer-image {
            max-width: 100%;
            max-height: 100%;
            object-fit: contain;
            border-radius: 8px;
        }
        
        .viewer-close {
            position: absolute;
            top: -40px;
            right: 0;
            background: none;
            border: none;
            color: white;
            font-size: 30px;
            cursor: pointer;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        /* 返回顶部按钮 */
        .back-to-top {
            position: fixed;
            bottom: 20px;
            right: 20px;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: #007bff;
            color: white;
            border: none;
            font-size: 18px;
            cursor: pointer;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0,123,255,0.3);
            transition: all 0.3s ease;
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
        }
        
        .back-to-top.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        
        .back-to-top:hover {
            background: #0056b3;
            transform: translateY(-2px);
        }
        
        /* 滚动条样式 */
        .screenshots-container::-webkit-scrollbar {
            height: 8px;
        }
        
        .screenshots-container::-webkit-scrollbar-track {
            background: #f1f1f1;
            border-radius: 4px;
        }
        
        .screenshots-container::-webkit-scrollbar-thumb {
            background: #c1c1c1;
            border-radius: 4px;
        }
        
        .screenshots-container::-webkit-scrollbar-thumb:hover {
            background: #a8a8a8;
        }