/* 基础样式重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            line-height: 1.6;
            color: #333842;
            background-color: #ffffff;
        }

        ul {
            list-style: none;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        img {
            max-width: 100%;
            display: block;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 科技感顶部装饰 */
        .tech-header-decoration {
            height: 4px;
            background: linear-gradient(90deg, #2563eb, #60a5fa, #22d3ee, #60a5fa, #2563eb);
            background-size: 300% 100%;
            animation: techGlow 8s ease infinite;
        }

        @keyframes techGlow {
            0% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
            100% { background-position: 0% 50%; }
        }

        /* 头部样式 - 科技蓝色背景 */
        header {
            background-color: #3b82f6; /* 明亮科技蓝色 */
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }

        .logo {
            font-size: 24px;
            font-weight: bold;
            color: white;
            display: flex;
            align-items: center;
            text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
        }

        .logo i {
            margin-right: 10px;
            font-size: 28px;
            animation: pulse 3s infinite;
        }

        @keyframes pulse {
            0% { transform: scale(1); opacity: 0.8; }
            50% { transform: scale(1.1); opacity: 1; }
            100% { transform: scale(1); opacity: 0.8; }
        }

        nav ul {
            display: flex;
        }

        nav li {
            margin-left: 30px;
        }

        nav a {
            font-weight: 500;
            color: white;
            transition: all 0.3s;
            position: relative;
            padding: 5px 0;
        }

        nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: white;
            transition: width 0.3s;
        }

        nav a:hover {
            opacity: 0.9;
        }

        nav a:hover::after {
            width: 100%;
        }

        .nav-btn {
            background-color: white;
            color: #2563eb;
            padding: 8px 16px;
            border-radius: 20px;
            transition: all 0.3s;
            box-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
        }

        .nav-btn:hover {
            background-color: #f1f5f9;
            box-shadow: 0 0 15px rgba(255, 255, 255, 0.5);
            transform: translateY(-2px);
        }

        .mobile-menu-btn {
            display: none;
            font-size: 24px;
            color: white;
        }

        /* 轮播Banner样式 - 无背景色区域 */
        .hero {
            position: relative;
            overflow: hidden;
            height: 60vh;
            width: 100%;
        }

        .carousel {
            position: relative;
            height: 100%;
            width: 100%;
        }

        .carousel-slide {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            color: white;
            opacity: 0;
            transition: opacity 0.5s ease;
            background-position: center;
            background-size: cover;
            background-repeat: no-repeat;
        }
        
        /* 为每个幻灯片添加不同的背景图 */
        .carousel-slide:nth-child(1) {
            background-image: url('photo1.jpg');
        }
        
        .carousel-slide:nth-child(2) {
            background-image: url('photo2.jpg');
        }
        
        .carousel-slide:nth-child(3) {
            background-image: url('photo3.jpg');
        }

        /* 科技感遮罩 */
        .carousel-slide::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(15, 20, 35, 0.75) 0%, rgba(30, 41, 59, 0.5) 100%);
        }

        .carousel-slide.active {
            opacity: 1;
            z-index: 1;
        }

        .carousel-content {
            display: flex;
            align-items: center;
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            height: 100%;
            position: relative;
            z-index: 2;
        }

        .hero-text {
            flex: 1;
            padding-right: 40px;
        }

        .hero h1 {
            font-size: 48px;
            margin-bottom: 20px;
            line-height: 1.2;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
            background: linear-gradient(90deg, #fff, #e2e8f0);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .hero p {
            font-size: 20px;
            margin-bottom: 30px;
            opacity: 0.9;
            text-shadow: 0 1px 4px rgba(0,0,0,0.5);
        }

        .hero-image {
            display: none;
        }

        .carousel-indicators {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 10px;
            z-index: 10;
        }

        .carousel-dot {
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, 0.3);
            cursor: pointer;
            transition: all 0.3s;
            border: 1px solid rgba(96, 165, 250, 0.5);
        }

        .carousel-dot.active {
            background-color: #60a5fa;
            transform: scale(1.2);
            box-shadow: 0 0 10px rgba(96, 165, 250, 0.7);
        }

        .btn {
            display: inline-block;
            background-color: #2563eb;
            color: white;
            padding: 12px 30px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 16px;
            transition: all 0.3s;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
            position: relative;
            overflow: hidden;
        }

        .btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
            transition: all 0.6s;
        }

        .btn:hover {
            background-color: #3b82f6;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(37, 99, 235, 0.5);
        }

        .btn:hover::before {
            left: 100%;
        }

        /* 分期优势区域 - 带背景色 */
        .advantages {
            padding: 80px 0;
            background-color: #f1f5f9;
            position: relative;
        }

        .advantages::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 1px;
            background: linear-gradient(90deg, transparent, #60a5fa, transparent);
        }

        .section-title {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-title h2 {
            font-size: 32px;
            margin-bottom: 15px;
            color: #1e293b;
            position: relative;
            display: inline-block;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 3px;
            background-color: #60a5fa;
            border-radius: 3px;
        }

        .section-title p {
            color: #64748b;
            font-size: 16px;
            max-width: 700px;
            margin: 0 auto;
        }

        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }

        .advantage-card {
            background-color: #ffffff;
            padding: 30px;
            border-radius: 10px;
            text-align: center;
            transition: all 0.3s;
            border: 1px solid rgba(96, 165, 250, 0.1);
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
        }

        .advantage-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.08);
            border-color: rgba(96, 165, 250, 0.3);
        }

        .advantage-icon {
            width: 70px;
            height: 70px;
            background-color: rgba(37, 99, 235, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            color: #2563eb;
            font-size: 28px;
            transition: all 0.3s;
        }

        .advantage-card:hover .advantage-icon {
            background-color: rgba(37, 99, 235, 0.2);
            box-shadow: 0 0 15px rgba(96, 165, 250, 0.5);
        }

        .advantage-card h3 {
            font-size: 20px;
            margin-bottom: 15px;
            color: #1e293b;
        }

        .advantage-card p {
            color: #64748b;
        }

        /* 热门机型区域 - 无背景色 */
        .featured-phones {
            padding: 80px 0;
            background-color: #ffffff;
            position: relative;
        }

        .phones-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
        }

        .phone-card {
            background-color: #ffffff;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: all 0.3s;
            border: 1px solid rgba(96, 165, 250, 0.1);
        }

        .phone-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
            border-color: rgba(96, 165, 250, 0.3);
        }

        .phone-image {
            padding: 20px;
            text-align: center;
            background-color: #f8fafc;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            height: 200px; /* 调整高度，减少上下距离 */
        }

        /* 图片宽100% 垂直居中，左右居中 */
        .phone-image img {
            width: 100%;
            max-width: 100%;
            max-height: 100%;
            object-fit: contain;
            margin: 0 auto;
            display: block;
            transition: transform 0.5s;
        }

        .phone-card:hover .phone-image img {
            transform: scale(1.05);
        }

        .phone-info {
            padding: 20px;
        }

        .phone-brand {
            font-size: 14px;
            color: #2563eb;
            font-weight: 600;
            margin-bottom: 5px;
        }

        .phone-name {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            color: #1e293b;
        }

        .phone-description {
            color: #64748b;
            font-size: 14px;
            margin-bottom: 20px;
        }

        .phone-pricing {
            display: flex;
            align-items: center;
            margin-bottom: 20px;
        }

        .original-price {
            text-decoration: line-through;
            color: #94a3b8;
            font-size: 14px;
            margin-right: 10px;
        }

        .installment-price {
            font-size: 22px;
            font-weight: 700;
            color: #2563eb;
        }

        .phone-card .btn {
            width: 100%;
            text-align: center;
            padding: 10px;
        }

        /* 分期方案区域 - 带背景色 */
        .installment-plans {
            padding: 80px 0;
            background-color: #f8fafc;
            position: relative;
        }

        .installment-plans::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 1px;
            background: linear-gradient(90deg, transparent, #60a5fa, transparent);
        }

        .plans-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            /* 确保三列高度一致 */
            align-items: stretch;
        }

        .plan-card {
            border: 1px solid rgba(96, 165, 250, 0.1);
            border-radius: 10px;
            padding: 30px;
            transition: all 0.3s;
            position: relative;
            background-color: #ffffff;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
            /* 确保卡片高度一致 */
            display: flex;
            flex-direction: column;
        }

        .plan-card:hover {
            border-color: #60a5fa;
            box-shadow: 0 10px 30px rgba(96, 165, 250, 0.1);
            transform: translateY(-5px);
        }

        .plan-card.popular {
            border-color: #60a5fa;
            background-color: rgba(37, 99, 235, 0.05);
        }

        .plan-card.popular::before {
            content: "最受欢迎";
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background-color: #2563eb;
            color: white;
            padding: 2px 15px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            box-shadow: 0 2px 10px rgba(37, 99, 235, 0.3);
        }

        .plan-duration {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 10px;
            color: #1e293b;
        }

        .plan-description {
            color: #64748b;
            margin-bottom: 20px;
        }

        .plan-features {
            margin-bottom: 20px;
            flex-grow: 1; /* 让特性列表占据剩余空间，确保高度一致 */
        }

        .plan-feature {
            display: flex;
            align-items: center;
            margin-bottom: 12px;
            color: #334155;
        }

        .plan-feature i {
            color: #2563eb;
            margin-right: 10px;
        }

        .plan-price {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 20px;
            color: #2563eb;
        }

        .plan-card .btn {
            width: 100%;
            text-align: center;
            background-color: transparent;
            color: #2563eb;
            border: 1px solid #2563eb;
            box-shadow: none;
            margin-top: auto; /* 按钮自动下沉到底部 */
        }

        .plan-card .btn:hover {
            background-color: #2563eb;
            color: white;
            border-color: #2563eb;
        }

        .plan-card.popular .btn {
            background-color: #2563eb;
            color: white;
            border-color: #2563eb;
        }

        .plan-card.popular .btn:hover {
            background-color: #3b82f6;
        }

        /* 租手机/分期手机流程区域 - 无背景色 */
        .purchase-process {
            padding: 80px 0;
            background-color: #ffffff;
            position: relative;
        }

        .process-steps {
            display: flex;
            justify-content: space-between;
            position: relative;
            margin-top: 40px;
        }

        .process-steps::before {
            content: '';
            position: absolute;
            top: 35px;
            left: 0;
            right: 0;
            height: 3px;
            background-color: #60a5fa;
            z-index: 1;
        }

        .process-step {
            flex: 1;
            text-align: center;
            position: relative;
            z-index: 2;
            padding: 0 15px;
        }

        .step-number {
            width: 70px;
            height: 70px;
            background-color: #2563eb;
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: bold;
            margin: 0 auto 20px;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
            transition: all 0.3s;
        }

        .process-step:hover .step-number {
            transform: scale(1.1);
            box-shadow: 0 6px 16px rgba(37, 99, 235, 0.5);
        }

        .step-title {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            color: #1e293b;
        }

        .step-description {
            color: #64748b;
            font-size: 14px;
        }

        /* 热门品牌专区 - 带背景色，一行6个，共12个 */
        .brands {
            padding: 60px 0;
            background-color: #f1f5f9;
            overflow: hidden;
        }

        .brands-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 20px;
            justify-items: center;
        }

        .brand-item {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 15px;
            transition: all 0.3s;
            width: 100%;
        }

        .brand-item:hover {
            transform: scale(1.05);
        }

        .brand-logo {
            max-height: 60px;
            max-width: 100%;
            margin: 0 auto;
            transition: all 0.3s;
        }

        .brand-item:hover .brand-logo {
            transform: scale(1.1);
        }

        .brand-name {
            display: none; /* 隐藏品牌文字 */
        }

        /* 用户真实评价滚动区域 - 无背景色，向左循环滚动 */
        .testimonials {
            padding: 80px 0;
            background-color: #ffffff;
            overflow: hidden;
            position: relative;
        }

        .testimonials::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 1px;
            background: linear-gradient(90deg, transparent, #60a5fa, transparent);
        }

        .testimonials-slider {
            position: relative;
            overflow: hidden;
            padding: 20px 0;
        }

        .testimonials-track {
            display: flex;
            gap: 30px;
            animation: scrollTestimonials 30s linear infinite;
            width: calc(300px * 12 + 30px * 11);
        }

        .testimonials-track:hover {
            animation-play-state: paused;
        }

        .testimonial-card {
            flex: 0 0 300px;
            background-color: #f8fafc;
            border-radius: 10px;
            padding: 30px;
            position: relative;
            border: 1px solid rgba(96, 165, 250, 0.1);
            transition: all 0.3s;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .testimonial-card:hover {
            border-color: rgba(96, 165, 250, 0.3);
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
        }

        .testimonial-text {
            font-style: italic;
            margin-bottom: 20px;
            color: #334155;
            line-height: 1.7;
            flex-grow: 1; /* 让评价内容占据剩余空间，确保高度一致 */
        }

        .testimonial-text::before {
            content: """;
            font-size: 50px;
            color: #60a5fa;
            opacity: 0.2;
            position: absolute;
            top: 10px;
            left: 10px;
            font-family: Georgia, serif;
        }

        /* 用户信息区域 - 固定高度，确保对齐 */
        .testimonial-author {
            display: flex;
            align-items: center;
            margin-top: auto; /* 推到容器底部 */
            height: 50px; /* 固定高度，确保所有作者信息区域高度一致 */
        }

        .author-avatar {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            overflow: hidden;
            margin-right: 15px;
            border: 2px solid rgba(96, 165, 250, 0.3);
            flex-shrink: 0; /* 防止头像被压缩 */
        }

        .author-info {
            flex-grow: 1;
            min-width: 0; /* 防止内容溢出 */
        }

        .author-info h4 {
            font-weight: 600;
            margin-bottom: 3px;
            color: #1e293b;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .author-info p {
            font-size: 14px;
            color: #64748b;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .stars {
            color: #2563eb;
            margin-bottom: 10px;
        }

        /* 向左循环滚动动画 */
        @keyframes scrollTestimonials {
            0% {
                transform: translateX(0);
            }
            100% {
                transform: translateX(calc(-300px * 6 - 30px * 5));
            }
        }

        /* 常见问题区域 - 带背景色 */
        .faq {
            padding: 80px 0;
            background-color: #f8fafc;
        }

        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            margin-bottom: 15px;
            border-radius: 8px;
            overflow: hidden;
            background-color: #ffffff;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            border: 1px solid rgba(96, 165, 250, 0.1);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 20px 25px;
            font-weight: 600;
            font-size: 16px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: all 0.3s;
            color: #1e293b;
        }

        .faq-question:hover {
            background-color: rgba(37, 99, 235, 0.03);
        }

        .faq-answer {
            padding: 0 25px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s, padding 0.3s;
            color: #64748b;
        }

        .faq-answer.active {
            padding: 0 25px 20px;
            max-height: 200px;
        }

        .faq-toggle {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background-color: rgba(96, 165, 250, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.3s, background-color 0.3s;
            color: #2563eb;
        }

        .faq-toggle.active {
            background-color: #2563eb;
            color: white;
            transform: rotate(45deg);
        }

        /* 行动召唤区域 - 无背景色（渐变） */
        .cta {
            background: linear-gradient(135deg, #3b82f6, #60a5fa);
            color: white;
            padding: 100px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: 
                radial-gradient(circle at 20% 30%, rgba(255,255,255,0.1) 0%, transparent 20%),
                radial-gradient(circle at 80% 70%, rgba(255,255,255,0.1) 0%, transparent 20%);
        }

        .cta h2 {
            font-size: 36px;
            margin-bottom: 20px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
            position: relative;
            z-index: 1;
        }

        .cta p {
            font-size: 18px;
            margin-bottom: 40px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            opacity: 0.9;
            position: relative;
            z-index: 1;
        }

        .cta .btn {
            background-color: white;
            color: #2563eb;
            font-size: 18px;
            padding: 15px 40px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
            position: relative;
            z-index: 1;
        }

        .cta .btn:hover {
            background-color: #f0f0f0;
            transform: translateY(-3px);
        }

        /* 社交媒体二维码 - 鼠标悬停显示 */
        .social-qrcode {
            position: absolute;
            bottom: 100%;
            left: 50%;
            transform: translateX(-50%) translateY(-10px);
            background-color: white;
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
            z-index: 10;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s;
            width: 180px;
        }

        .social-qrcode::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            border-width: 10px 10px 0;
            border-style: solid;
            border-color: white transparent transparent;
        }

        .social-qrcode img {
            width: 100%;
            height: auto;
        }

        .social-qrcode p {
            color: #333;
            font-size: 14px;
            text-align: center;
            margin-top: 10px;
        }

        .social-link {
            position: relative;
        }

        .social-link:hover .social-qrcode {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }

        /* 页脚样式 - 带背景色 */
        footer {
            background-color: #f1f5f9;
            color: #64748b;
            padding: 80px 0 40px;
            border-top: 1px solid rgba(96, 165, 250, 0.1);
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 60px;
        }

        .footer-logo {
            font-size: 24px;
            font-weight: bold;
            color: #1e293b;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
        }

        .footer-logo i {
            margin-right: 10px;
            color: #2563eb;
        }

        .footer-desc {
            margin-bottom: 20px;
            line-height: 1.7;
        }

        .social-links {
            display: flex;
            gap: 15px;
        }

        .social-link {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background-color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #64748b;
            transition: all 0.3s;
            cursor: pointer;
            border: 1px solid rgba(96, 165, 250, 0.1);
        }

        .social-link:hover {
            background-color: #2563eb;
            color: white;
            border-color: #2563eb;
            transform: translateY(-3px);
        }

        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: #1e293b;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 2px;
            background-color: #60a5fa;
        }

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            transition: color 0.3s;
            position: relative;
            padding-left: 5px;
        }

        .footer-links a::before {
            content: '>';
            position: absolute;
            left: -10px;
            opacity: 0;
            transition: all 0.3s;
            color: #2563eb;
        }

        .footer-links a:hover {
            color: #2563eb;
            padding-left: 10px;
        }

        .footer-links a:hover::before {
            left: 0;
            opacity: 1;
        }

        .footer-bottom {
            padding-top: 30px;
            border-top: 1px solid #e2e8f0;
            text-align: center;
            font-size: 14px;
        }

        /* 二维码弹窗样式 */
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.7);
            z-index: 1000;
            justify-content: center;
            align-items: center;
            animation: fadeIn 0.3s;
        }

        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

        .modal-content {
            background-color: white;
            padding: 30px;
            border-radius: 10px;
            text-align: center;
            max-width: 300px;
            width: 90%;
            box-shadow: 0 5px 30px rgba(0, 0, 0, 0.3);
            position: relative;
            animation: scaleIn 0.3s;
        }

        @keyframes scaleIn {
            from { transform: scale(0.8); opacity: 0; }
            to { transform: scale(1); opacity: 1; }
        }

        .close-modal {
            position: absolute;
            top: 15px;
            right: 15px;
            font-size: 24px;
            cursor: pointer;
            color: #64748b;
            transition: color 0.3s;
        }

        .close-modal:hover {
            color: #2563eb;
        }

        .qrcode-image {
            margin: 0 auto 20px;
            width: 200px;
            height: 200px;
        }

        .qrcode-image img {
            width: 100%;
            height: 100%;
            object-fit: contain;
        }

        .modal-content p {
            color: #334155;
            margin-bottom: 10px;
        }

        /* 响应式设计 */
        @media (max-width: 992px) {
            .hero h1 {
                font-size: 38px;
            }
            
            .carousel-content {
                justify-content: center;
            }
            
            .hero-text {
                padding-right: 0;
                text-align: center;
            }
            
            .phones-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            /* 流程步骤响应式调整 */
            .process-steps {
                flex-wrap: wrap;
            }
            
            .process-step {
                flex: 0 0 48%;
                margin-bottom: 30px;
            }
            
            .process-steps::before {
                display: none; /* 在中等屏幕上隐藏连接线 */
            }

            /* 品牌专区响应式调整 */
            .brands-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 15px;
            }
        }

        @media (max-width: 768px) {
            nav {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: #3b82f6; /* 移动端导航保持相同背景 */
                box-shadow: 0 5px 10px rgba(0, 0, 0, 0.3);
                padding: 20px 0;
            }
            
            nav.active {
                display: block;
            }
            
            nav ul {
                flex-direction: column;
                align-items: center;
            }
            
            nav li {
                margin: 10px 0;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .section-title h2 {
                font-size: 28px;
            }
            
            .cta h2 {
                font-size: 30px;
            }
            
            .plans-grid {
                grid-template-columns: 1fr;
            }

            /* 流程步骤响应式调整 */
            .process-step {
                flex: 0 0 100%;
            }
        }

        @media (max-width: 576px) {
            .hero {
                height: 50vh;
            }
            
            .hero h1 {
                font-size: 28px;
            }
            
            .hero p {
                font-size: 16px;
            }
            
            .section-title h2 {
                font-size: 24px;
            }
            
            .section-title p {
                font-size: 14px;
            }
            
            .advantages, .featured-phones, .installment-plans, .purchase-process, .testimonials, .faq {
                padding: 60px 0;
            }
            
            .phones-grid {
                grid-template-columns: 1fr;
            }
            
            .phone-image {
                height: 180px; /* 移动端进一步调整图片高度 */
            }
            
            .cta {
                padding: 80px 0;
            }
            
            .cta h2 {
                font-size: 24px;
            }
            
            .cta p {
                font-size: 16px;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
                text-align: center;
            }
            
            .social-links {
                justify-content: center;
            }
            
            .footer-title::after {
                left: 50%;
                transform: translateX(-50%);
            }

            /* 步骤数字缩小 */
            .step-number {
                width: 50px;
                height: 50px;
                font-size: 20px;
            }

            /* 品牌专区移动端调整 */
            .brands-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            /* 评价卡片在移动端的调整 */
            .testimonial-card {
                flex: 0 0 250px;
            }
        }