/* 基础样式 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
            color: #333;
            background-color: #f9f9f9;
            line-height: 1.6;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }
        
        img {
            max-width: 100%;
            display: block;
        }
        
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        
        .btn {
            display: inline-block;
            padding: 12px 24px;
            border-radius: 30px;
            font-weight: 600;
            text-align: center;
            transition: all 0.3s ease;
        }
        
        .btn-primary {
            background-color: #E63946;
            color: white;
        }
        
        .btn-primary:hover {
            background-color: #c70039;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(230, 57, 70, 0.3);
        }
        
        .btn-outline {
            border: 2px solid #E63946;
            color: #E63946;
            background-color: white;
        }
        
        .btn-outline:hover {
            background-color: rgba(230, 57, 70, 0.05);
        }
        
        section {
            padding: 80px 0;
        }
        
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 20px;
            color: #333;
        }
        
        .section-desc {
            font-size: 1.1rem;
            color: #666;
            text-align: center;
            max-width: 700px;
            margin: 0 auto 60px;
        }
        
        /* 导航栏 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            z-index: 100;
            transition: all 0.3s ease;
        }
        
        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        
        .logo {
            display: flex;
            align-items: center;
            font-size: 1.5rem;
            font-weight: 700;
            color: #E63946;
        }
        
        .logo i {
            margin-right: 10px;
        }
        
        .nav-links {
            display: flex;
            list-style: none;
        }
        
        .nav-links li {
            margin-left: 30px;
        }
        
        .nav-links a {
            color: #666;
            font-weight: 500;
        }
        
        .nav-links a:hover {
            color: #E63946;
        }
        
        .mobile-menu-btn {
            display: none;
            font-size: 1.5rem;
            color: #666;
        }
        
        .mobile-menu {
            display: none;
            background-color: white;
            border-top: 1px solid #eee;
            padding: 15px 0;
        }
        
        .mobile-menu a {
            display: block;
            padding: 10px 0;
            color: #666;
            border-bottom: 1px solid #eee;
        }
        
        .mobile-menu a:last-child {
            border-bottom: none;
            margin-top: 10px;
            background-color: #E63946;
            color: white;
            text-align: center;
            border-radius: 30px;
        }
        
        /* 英雄区域 */
        .hero {
            padding-top: 150px;
            padding-bottom: 80px;
            background: linear-gradient(to bottom, #f1faee, white);
        }
        
        .hero-content {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
        }
        
        .hero-text {
            flex: 1;
            min-width: 300px;
            padding-right: 40px;
        }
        
        .hero-text h1 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 20px;
            line-height: 1.3;
        }
        
        .hero-text h1 span {
            color: #E63946;
        }
        
        .hero-text p {
            font-size: 1.1rem;
            color: #666;
            margin-bottom: 30px;
            max-width: 500px;
        }
        
        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            margin-bottom: 30px;
        }
        
        .hero-buttons .btn {
            padding: 15px 30px;
            font-size: 1.1rem;
        }
        
        .user-count {
            display: flex;
            align-items: center;
        }
        
        .user-avatars {
            display: flex;
            margin-right: 15px;
        }
        
        .user-avatars img {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 2px solid white;
            margin-left: -10px;
        }
        
        .user-avatars img:first-child {
            margin-left: 0;
        }
        
        .user-avatars .count {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 2px solid white;
            background-color: #eee;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            font-weight: 600;
            color: #666;
            margin-left: -10px;
        }
        
        .hero-image {
            flex: 1;
            min-width: 300px;
            display: flex;
            justify-content: center;
        }
        
        .hero-image img {
            max-width: 300px;
            border-radius: 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            transform: rotate(2deg);
            transition: all 0.5s ease;
        }
        
        .hero-image img:hover {
            transform: rotate(0);
        }
        
        /* 信任标志 */
        .trust-brands {
            padding: 40px 0;
            background-color: #f9f9f9;
        }
        
        .trust-text {
            text-align: center;
            color: #999;
            margin-bottom: 30px;
        }
        
        .brands {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 40px;
            opacity: 0.7;
        }
        
        .brands span {
            font-size: 1.2rem;
            font-weight: 600;
            color: #666;
        }
        
        /* 功能特点 */
        .features {
            background-color: white;
        }
        
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .feature-card {
            background-color: #f1faee;
            border-radius: 20px;
            padding: 30px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
        }
        
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        
        .feature-icon {
            width: 60px;
            height: 60px;
            background-color: rgba(230, 57, 70, 0.1);
            border-radius: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }
        
        .feature-icon i {
            font-size: 1.5rem;
            color: #E63946;
        }
        
        .feature-card h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 15px;
            color: #333;
        }
        
        .feature-card p {
            color: #666;
        }
        
        /* 赚钱方式 */
        .how-it-works {
            background-color: #f9f9f9;
        }
        
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 80px;
        }
        
        .step-card {
            background-color: white;
            border-radius: 20px;
            padding: 30px;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            position: relative;
            overflow: hidden;
        }
        
        .step-card::before {
            content: '';
            position: absolute;
            top: -30px;
            right: -30px;
            width: 80px;
            height: 80px;
            background-color: rgba(230, 57, 70, 0.1);
            border-radius: 50%;
        }
        
        .step-number {
            width: 70px;
            height: 70px;
            background-color: #E63946;
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: 700;
            margin: 0 auto 20px;
            position: relative;
            z-index: 1;
        }
        
        .step-card img {
            border-radius: 10px;
            height: 180px;
            object-fit: cover;
            margin: 0 auto 20px;
            width: 100%;
        }
        
        .step-card h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 15px;
            color: #333;
        }
        
        .step-card p {
            color: #666;
        }
        
        .task-types {
            margin-top: 60px;
        }
        
        .task-types h3 {
            text-align: center;
            font-size: 1.8rem;
            margin-bottom: 40px;
            color: #333;
        }
        
        .tasks-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
        }
        
        .task-card {
            background-color: white;
            border-radius: 15px;
            padding: 20px;
            display: flex;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
        }
        
        .task-card:hover {
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        
        .task-icon {
            background-color: rgba(230, 57, 70, 0.1);
            padding: 15px;
            border-radius: 10px;
            margin-right: 20px;
        }
        
        .task-icon i {
            font-size: 1.2rem;
            color: #E63946;
        }
        
        .task-info h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: #333;
        }
        
        .task-info p {
            color: #666;
            font-size: 0.95rem;
        }
        
        /* 收益展示 */
        .earnings {
            background-color: white;
        }
        
        .earnings-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-bottom: 60px;
        }
        
        .earning-card {
            background: linear-gradient(135deg, #E63946 0%, #C70039 100%);
            color: white;
            border-radius: 20px;
            padding: 30px;
            box-shadow: 0 10px 30px rgba(230, 57, 70, 0.2);
            transition: all 0.3s ease;
        }
        
        .earning-card:hover {
            transform: scale(1.05);
        }
        
        .earning-amount {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        
        .earning-type {
            opacity: 0.9;
            margin-bottom: 20px;
        }
        
        .earning-testimonial {
            background-color: rgba(255, 255, 255, 0.2);
            padding: 15px;
            border-radius: 10px;
        }
        
        .earning-testimonial p {
            font-size: 0.9rem;
            margin-bottom: 15px;
        }
        
        .earning-user {
            font-weight: 600;
        }
        
        .earnings-chart {
            background-color: #f9f9f9;
            border-radius: 20px;
            padding: 30px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        
        .earnings-chart h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 20px;
            color: #333;
        }
        
        .chart-container {
            background-color: white;
            border-radius: 10px;
            padding: 20px;
            height: 400px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        /* 用户评价 */
        .testimonials {
            background-color: #f9f9f9;
        }
        
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-bottom: 40px;
        }
        
        .testimonial-card {
            background-color: white;
            border-radius: 20px;
            padding: 30px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
        }
        
        .testimonial-card:hover {
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        
        .testimonial-header {
            display: flex;
            align-items: center;
            margin-bottom: 20px;
        }
        
        .testimonial-avatar {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            margin-right: 15px;
        }
        
        .testimonial-name {
            font-weight: 600;
            margin-bottom: 5px;
        }
        
        .testimonial-rating {
            color: #FFB703;
        }
        
        .testimonial-text {
            color: #666;
            margin-bottom: 20px;
        }
        
        .testimonial-meta {
            font-size: 0.9rem;
            color: #999;
        }
        
        .more-testimonials {
            text-align: center;
        }
        
        /* 下载区域 */
        .download {
            background: linear-gradient(to bottom, white, #f9f9f9);
            padding-bottom: 100px;
        }
        
        .download-card {
            background: linear-gradient(135deg, #E63946 0%, #C70039 100%);
            border-radius: 30px;
            overflow: hidden;
            box-shadow: 0 15px 40px rgba(230, 57, 70, 0.2);
            margin-bottom: 60px;
        }
        
        .download-content {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
        }
        
        .download-text {
            flex: 1;
            min-width: 300px;
            padding: 50px;
            color: white;
        }
        
        .download-text h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 20px;
        }
        
        .download-text p {
            opacity: 0.9;
            margin-bottom: 30px;
            max-width: 400px;
        }
        
        .download-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            margin-bottom: 30px;
        }
        
        .download-btn {
            background-color: white;
            color: #E63946;
            padding: 15px 20px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            font-weight: 600;
        }
        
        .download-btn i {
            font-size: 1.5rem;
            margin-right: 10px;
        }
        
        .download-btn div {
            text-align: left;
        }
        
        .download-btn .small {
            font-size: 0.8rem;
        }
        
        .download-qr {
            display: flex;
            align-items: center;
        }
        
        .qr-code {
            background-color: white;
            padding: 10px;
            border-radius: 10px;
            margin-right: 20px;
        }
        
        .qr-code img {
            width: 100px;
            height: 100px;
        }
        
        .qr-info p:first-child {
            font-weight: 600;
            margin-bottom: 5px;
        }
        
        .qr-info p:last-child {
            font-size: 0.9rem;
            opacity: 0.8;
        }
        
        .download-image {
            flex: 1;
            min-width: 300px;
            padding: 50px;
            display: flex;
            justify-content: center;
        }
        
        .download-image img {
            max-width: 300px;
            border-radius: 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
            transform: rotate(-3deg);
            transition: all 0.5s ease;
        }
        
        .download-image img:hover {
            transform: rotate(0);
        }
        
        .other-downloads {
            text-align: center;
        }
        
        .other-downloads h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 30px;
            color: #333;
        }
        
        .download-stores {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 30px;
        }
        
        .store-link {
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 15px;
            border-radius: 10px;
            transition: all 0.3s ease;
        }
        
        .store-link:hover {
            background-color: #f1f1f1;
        }
        
        .store-icon {
            width: 70px;
            height: 70px;
            margin-bottom: 10px;
        }
        
        .store-name {
            color: #666;
            font-weight: 500;
        }
        
        /* 常见问题 */
        .faq {
            background-color: white;
        }
        
        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }
        
        .faq-item {
            margin-bottom: 15px;
            background-color: #f9f9f9;
            border-radius: 15px;
            overflow: hidden;
        }
        
        .faq-toggle {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px;
            text-align: left;
            font-weight: 600;
            color: #333;
        }
        
        .faq-toggle:hover {
            background-color: #f1f1f1;
        }
        
        .faq-toggle i {
            color: #E63946;
            transition: all 0.3s ease;
        }
        
        .faq-content {
            padding: 0 20px 20px;
            color: #666;
            display: none;
        }
        
        .more-faq {
            text-align: center;
            margin-top: 40px;
        }
        
        .more-faq a {
            color: #E63946;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
        }
        
        .more-faq i {
            margin-left: 5px;
        }
        
        /* 联系我们 */
        .contact {
            background-color: #f9f9f9;
            padding: 60px 0;
        }
        
        .contact-card {
            background-color: white;
            border-radius: 20px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            overflow: hidden;
        }
        
        .contact-content {
            display: flex;
            flex-wrap: wrap;
        }
        
        .contact-info {
            flex: 1;
            min-width: 300px;
            padding: 50px;
        }
        
        .contact-info h2 {
            font-size: 1.8rem;
            font-weight: 600;
            margin-bottom: 20px;
            color: #333;
        }
        
        .contact-info p {
            color: #666;
            margin-bottom: 40px;
        }
        
        .contact-methods {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        
        .contact-method {
            display: flex;
            align-items: flex-start;
        }
        
        .contact-icon {
            background-color: rgba(230, 57, 70, 0.1);
            padding: 15px;
            border-radius: 10px;
            margin-right: 20px;
        }
        
        .contact-icon i {
            color: #E63946;
            font-size: 1.2rem;
        }
        
        .contact-details h4 {
            font-weight: 600;
            margin-bottom: 5px;
            color: #333;
        }
        
        .contact-details p {
            margin-bottom: 5px;
            color: #666;
        }
        
        .contact-details p:last-child {
            font-size: 0.9rem;
            color: #999;
            margin-bottom: 0;
        }
        
        .contact-form {
            flex: 1;
            min-width: 300px;
            padding: 50px;
            background-color: #f9f9f9;
        }
        
        .form-group {
            margin-bottom: 20px;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 10px;
            font-weight: 500;
            color: #333;
        }
        
        .form-control {
            width: 100%;
            padding: 15px;
            border: 1px solid #ddd;
            border-radius: 10px;
            font-family: inherit;
            font-size: 1rem;
        }
        
        .form-control:focus {
            outline: none;
            border-color: #E63946;
            box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.1);
        }
        
        textarea.form-control {
            min-height: 120px;
            resize: vertical;
        }
        
        .contact-form .btn {
            width: 100%;
            padding: 15px;
            font-size: 1rem;
        }
        
        /* 页脚 */
        footer {
            background-color: #1D3557;
            color: white;
            padding: 80px 0 40px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 60px;
        }
        
        .footer-logo {
            font-size: 1.5rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            margin-bottom: 20px;
        }
        
        .footer-logo i {
            margin-right: 10px;
        }
        
        .footer-desc {
            color: #bbb;
            margin-bottom: 30px;
        }
        
        .social-links {
            display: flex;
            gap: 15px;
        }
        
        .social-link {
            width: 40px;
            height: 40px;
            background-color: #334e68;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }
        
        .social-link:hover {
            background-color: #E63946;
        }
        
        .footer-title {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 20px;
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 15px;
        }
        
        .footer-links a {
            color: #bbb;
            transition: all 0.3s ease;
        }
        
        .footer-links a:hover {
            color: white;
        }
        
        .footer-bottom {
            border-top: 1px solid #334e68;
            padding-top: 30px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
        }
        
        .copyright {
            color: #999;
            font-size: 0.9rem;
            margin-bottom: 15px;
        }
        
        .footer-bottom-links {
            display: flex;
            gap: 20px;
        }
        
        .footer-bottom-links a {
            color: #999;
            font-size: 0.9rem;
            transition: all 0.3s ease;
        }
        
        .footer-bottom-links a:hover {
            color: #bbb;
        }
        
        .footer-note {
            color: #666;
            font-size: 0.8rem;
            text-align: center;
            margin-top: 20px;
            width: 100%;
        }
        
        /* 返回顶部按钮 */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background-color: #E63946;
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(230, 57, 70, 0.3);
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            z-index: 100;
        }
        
        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
        }
        
        /* 响应式调整 */
        @media (max-width: 992px) {
            .hero-text {
                padding-right: 0;
                margin-bottom: 50px;
                text-align: center;
            }
            
            .hero-text p {
                margin-left: auto;
                margin-right: auto;
            }
            
            .hero-buttons {
                justify-content: center;
            }
            
            .user-count {
                justify-content: center;
            }
            
            .download-text,
            .download-image {
                padding: 30px;
            }
            
            .contact-info,
            .contact-form {
                padding: 30px;
            }
        }
        
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .section-title {
                font-size: 1.8rem;
            }
            
            .hero-text h1 {
                font-size: 2rem;
            }
            
            .earning-amount {
                font-size: 2rem;
            }
            
            .download-text h2 {
                font-size: 1.8rem;
            }
        }
        
        @media (max-width: 576px) {
            .section-title {
                font-size: 1.5rem;
            }
            
            .section-desc {
                font-size: 1rem;
            }
            
            .btn {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
            
            .hero {
                padding-top: 120px;
            }
            
            .hero-text h1 {
                font-size: 1.8rem;
            }
            
            .hero-buttons .btn {
                width: 100%;
            }
            
            .brands {
                gap: 20px;
            }
            
            .brands span {
                font-size: 1rem;
            }
            
            .steps-grid,
            .tasks-grid,
            .earnings-grid,
            .testimonials-grid {
                grid-template-columns: 1fr;
            }
            
            .download-btn {
                width: 100%;
                justify-content: center;
            }
            
            .download-qr {
                flex-direction: column;
                text-align: center;
            }
            
            .qr-code {
                margin-right: 0;
                margin-bottom: 20px;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
            }
            
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            
            .footer-bottom-links {
                margin-bottom: 15px;
            }
        }