* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: Arial, Helvetica, sans-serif;
            line-height: 1.6;
            color: #333;
            background: #fff;
        }

        /* 顶部导航栏 - 科技感设计 */
        .header {
            background: #0a1628;
            color: white;
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(0, 10, 40, 0.3);
            border-bottom: 2px solid #00d4ff;
        }

        .navbar {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 20px;
            height: 70px;
        }

        .logo {
            font-size: 28px;
            font-weight: bold;
            color: #fff;
            text-decoration: none;
            display: flex;
            align-items: center;
            letter-spacing: 2px;
            text-transform: uppercase;
        }

        .logo span {
            color: #00d4ff;
        }

        /* 主菜单 - 科技蓝色风格 */
        .main-nav {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .main-nav > li {
            position: relative;
        }

        .main-nav > li > a {
            display: block;
            padding: 25px 20px;
            color: #fff;
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* Active状态 - 科技蓝色 */
        .main-nav > li > a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 2px;
            background: #00d4ff;
            transition: all 0.3s ease;
            transform: translateX(-50%);
        }

        .main-nav > li > a:hover::after,
        .main-nav > li > a.active::after {
            width: 100%;
        }

        .main-nav > li > a:hover,
        .main-nav > li > a.active {
            color: #00d4ff;
            text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
        }

        /* 下拉箭头 */
        .has-dropdown > a::before {
            content: '▼';
            font-size: 8px;
            margin-right: 5px;
            display: inline-block;
            transition: transform 0.3s ease;
            color: #00d4ff;
        }

        .has-dropdown:hover > a::before {
            transform: rotate(180deg);
        }

        /* 二级菜单 */
        .dropdown-menu {
            position: absolute;
            top: 100%;
            left: 0;
            background: linear-gradient(135deg, #0a1628 0%, #1a2845 100%);
            min-width: 240px;
            list-style: none;
            box-shadow: 0 10px 30px rgba(0, 10, 40, 0.4);
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: all 0.3s ease;
            z-index: 1001;
            border-top: 2px solid #00d4ff;
            backdrop-filter: blur(10px);
        }

        .main-nav > li:hover > .dropdown-menu,
        .main-nav > li.active > .dropdown-menu {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .dropdown-menu li {
            position: relative;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .dropdown-menu li:last-child {
            border-bottom: none;
        }

        .dropdown-menu a {
            display: block;
            padding: 14px 25px;
            color: #fff;
            text-decoration: none;
            font-size: 14px;
            transition: all 0.3s ease;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .dropdown-menu a:hover,
        .dropdown-menu a.active {
            background: rgba(0, 212, 255, 0.1);
            color: #00d4ff;
            padding-left: 35px;
        }

        /* 三级菜单 */
        .dropdown-menu .dropdown-menu {
            left: 100%;
            top: 0;
            border-top: none;
            border-left: 2px solid #00d4ff;
        }

        .dropdown-menu li:hover > .dropdown-menu,
        .dropdown-menu li.active > .dropdown-menu {
            opacity: 1;
            visibility: visible;
            transform: translateX(0);
        }

        .dropdown-menu li.has-submenu > a::after {
            content: '▶';
            font-size: 8px;
            float: right;
            margin-top: 4px;
            transition: transform 0.3s ease;
            color: #00d4ff;
        }

        .dropdown-menu li.has-submenu:hover > a::after {
            transform: rotate(90deg);
        }

        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 24px;
            cursor: pointer;
            padding: 10px;
        }

        /* Hero区域 - 科技感设计 */
        .hero {
            background: linear-gradient(135deg, #0a1628 0%, #1a2845 50%, #0a1628 100%);
            color: white;
            padding: 100px 20px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
            animation: pulse 4s ease-in-out infinite;
        }

        @keyframes pulse {
            0%, 100% { transform: scale(1); opacity: 0.5; }
            50% { transform: scale(1.1); opacity: 0.8; }
        }

        .hero h1 {
            font-size: 52px;
            margin-bottom: 25px;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 3px;
            position: relative;
            z-index: 1;
        }

        .hero h1 span {
            color: #00d4ff;
        }

        .hero p {
            font-size: 18px;
            max-width: 900px;
            margin: 0 auto 40px;
            opacity: 0.9;
            line-height: 1.8;
            position: relative;
            z-index: 1;
        }

        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 60px;
            margin-top: 50px;
            position: relative;
            z-index: 1;
        }

        .stat-item {
            text-align: center;
            padding: 30px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 15px;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(0, 212, 255, 0.3);
            transition: all 0.3s ease;
        }

        .stat-item:hover {
            transform: translateY(-10px);
            background: rgba(0, 212, 255, 0.1);
            border-color: #00d4ff;
        }

        .stat-number {
            font-size: 42px;
            font-weight: bold;
            color: #00d4ff;
            text-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
        }

        .stat-label {
            font-size: 13px;
            opacity: 0.8;
            margin-top: 8px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* 内容区域 */
        .content-section {
            max-width: 1400px;
            margin: 0 auto;
            padding: 80px 20px;
        }

        .section-title {
            text-align: center;
            font-size: 38px;
            margin-bottom: 20px;
            color: #0a1628;
            position: relative;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 2px;
        }

        .section-title::after {
            content: '';
            display: block;
            width: 100px;
            height: 4px;
            background: linear-gradient(90deg, #00d4ff, #0a1628);
            margin: 20px auto 0;
            border-radius: 2px;
        }

        .section-subtitle {
            text-align: center;
            color: #666;
            font-size: 16px;
            margin-bottom: 50px;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        /* 产品展示 - 科技风格网格布局 */
        .products-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }

        .product-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 24px rgba(0, 10, 40, 0.1);
            transition: all 0.4s ease;
            position: relative;
        }

        .product-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, #00d4ff, #0099cc);
            transform: scaleX(0);
            transition: transform 0.4s ease;
        }

        .product-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(0, 212, 255, 0.2);
        }

        .product-card:hover::before {
            transform: scaleX(1);
        }

        .product-image {
            width: 100%;
            height: 220px;
            object-fit: cover;
            background: linear-gradient(135deg, #0a1628 0%, #1a2845 100%);
        }

        .product-info {
            padding: 25px;
            text-align: center;
        }

        .product-title {
            font-size: 20px;
            margin-bottom: 12px;
            color: #0a1628;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .product-desc {
            font-size: 14px;
            color: #666;
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .product-link {
            display: inline-block;
            padding: 10px 25px;
            background: linear-gradient(90deg, #00d4ff, #0099cc);
            color: white;
            text-decoration: none;
            border-radius: 6px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            font-size: 13px;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
        }

        .product-link:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 212, 255, 0.4);
        }

        /* 解决方案区域 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }

        .solution-card {
            background: #f8f9fa;
            padding: 40px 30px;
            border-radius: 12px;
            text-align: center;
            transition: all 0.3s ease;
            border: 2px solid transparent;
            position: relative;
            overflow: hidden;
        }

        .solution-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.05) 0%, transparent 100%);
            transform: translateX(-100%);
            transition: transform 0.3s ease;
        }

        .solution-card:hover {
            border-color: #00d4ff;
            background: white;
            transform: translateY(-5px);
        }

        .solution-card:hover::before {
            transform: translateX(0);
        }

        .solution-icon {
            font-size: 48px;
            margin-bottom: 20px;
            color: #00d4ff;
            position: relative;
            z-index: 1;
        }

        .solution-title {
            font-size: 20px;
            margin-bottom: 15px;
            color: #0a1628;
            font-weight: 700;
            text-transform: uppercase;
            position: relative;
            z-index: 1;
        }

        .solution-desc {
            font-size: 14px;
            color: #666;
            line-height: 1.7;
            position: relative;
            z-index: 1;
        }

        /* 页脚 - 科技风格 */
        .footer {
            background: #0a1628;
            color: white;
            padding: 80px 20px 30px;
            margin-top: 80px;
            border-top: 3px solid #00d4ff;
        }

        .footer-content {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 50px;
            margin-bottom: 50px;
        }

        .footer-section h3 {
            font-size: 20px;
            margin-bottom: 25px;
            color: #00d4ff;
            text-transform: uppercase;
            letter-spacing: 1px;
            font-weight: 700;
        }

        .footer-section p {
            font-size: 14px;
            line-height: 1.8;
            color: #a0aec0;
        }

        .footer-links {
            list-style: none;
        }

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

        .footer-links a {
            color: #a0aec0;
            text-decoration: none;
            transition: all 0.3s ease;
            display: block;
            padding: 5px 0;
        }

        .footer-links a:hover {
            color: #00d4ff;
            padding-left: 10px;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 14px;
            color: #666;
        }

        .footer-bottom a {
            color: #00d4ff;
            text-decoration: none;
        }

        /* 右侧悬浮按钮 - 科技风格 */
        .floating-buttons {
            position: fixed;
            right: 25px;
            top: 50%;
            transform: translateY(-50%);
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .floating-btn {
            width: 55px;
            height: 55px;
            border-radius: 12px;
            background: #00d4ff;
            color: white;
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            box-shadow: 0 8px 20px rgba(0, 212, 255, 0.4);
            transition: all 0.3s ease;
            text-decoration: none;
        }

        .floating-btn:hover {
            background: #0099cc;
            transform: scale(1.15);
        }

        .floating-btn.whatsapp {
            background: #25D366;
        }

        .floating-btn.whatsapp:hover {
            background: #128C7E;
        }

        .floating-btn.email {
            background: #EA4335;
        }

        .floating-btn.email:hover {
            background: #c23321;
        }

        .floating-btn.phone {
            background: #3498db;
        }

        .floating-btn.phone:hover {
            background: #1a6db0;
        }

        .floating-btn.back-to-top {
            background: #0a1628;
            border: 2px solid #00d4ff;
        }

        .floating-btn.back-to-top:hover {
            background: #00d4ff;
            border-color: #0099cc;
        }

        /* ========================================
           新增功能模块样式 - ZonePro科技风格
           ======================================== */

        /* ===== 新增：左图右文模式 - 科技风格 ===== */
        .image-text-section {
            padding: 80px 20px;
            background: linear-gradient(135deg, #f0f7ff 0%, #fff 100%);
        }

        .image-text-container {
            display: flex;
            align-items: stretch;
            max-width: 1400px;
            margin: 0 auto;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0, 10, 40, 0.15);
            position: relative;
        }

        .image-text-container::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: linear-gradient(90deg, #00d4ff, #0099cc);
        }

        .image-wrapper {
            width: 50%;
            position: relative;
            overflow: hidden;
        }

        .image-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
            transition: transform 0.5s ease;
        }

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

        .text-wrapper {
            width: 50%;
            padding: 70px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            background: white;
            position: relative;
        }

        .text-wrapper::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 1px;
            height: 100%;
            background: linear-gradient(180deg, #00d4ff, transparent);
        }

        .text-wrapper h3 {
            font-size: 36px;
            margin-bottom: 25px;
            color: #0a1628;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 2px;
            position: relative;
        }

        .text-wrapper h3 span {
            color: #00d4ff;
        }

        .text-wrapper p {
            margin-bottom: 20px;
            line-height: 1.9;
            color: #555;
            font-size: 16px;
        }

        .text-wrapper .cta-button {
            display: inline-block;
            padding: 15px 35px;
            background: linear-gradient(90deg, #00d4ff, #0099cc);
            color: #fff;
            text-decoration: none;
            border-radius: 8px;
            margin-top: 15px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            font-size: 14px;
            transition: all 0.3s ease;
            box-shadow: 0 8px 25px rgba(0, 212, 255, 0.4);
            width: fit-content;
        }

        .text-wrapper .cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 35px rgba(0, 212, 255, 0.5);
        }

        /* ===== 新增：图片轮播模式 - 科技风格 ===== */
        .carousel-section {
            padding: 100px 20px;
            background: #0a1628;
            color: white;
            position: relative;
            overflow: hidden;
        }

        .carousel-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -200px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.15) 0%, transparent 70%);
            animation: float 6s ease-in-out infinite;
        }

        @keyframes float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-30px); }
        }

        .carousel-section .section-title {
            color: white;
        }

        .carousel-section .section-title::after {
            background: linear-gradient(90deg, #00d4ff, white);
        }

        .carousel-container {
            max-width: 1400px;
            margin: 0 auto;
            position: relative;
            overflow: hidden;
            border-radius: 15px;
            box-shadow: 0 20px 60px rgba(0, 212, 255, 0.3);
            border: 2px solid rgba(0, 212, 255, 0.3);
            z-index: 1;
        }

        .carousel-wrapper {
            display: flex;
            transition: transform 0.6s ease;
        }

        .carousel-slide {
            min-width: 100%;
            position: relative;
        }

        .carousel-slide img {
            width: 100%;
            height: 550px;
            object-fit: cover;
            display: block;
        }

        .carousel-caption {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(transparent, rgba(10, 22, 40, 0.95));
            padding: 50px;
            color: white;
        }

        .carousel-caption h4 {
            font-size: 32px;
            margin-bottom: 15px;
            color: #00d4ff;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 2px;
        }

        .carousel-caption p {
            color: rgba(255, 255, 255, 0.9);
            max-width: 900px;
            font-size: 17px;
            line-height: 1.7;
        }

        .carousel-prev,
        .carousel-next {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            background: rgba(0, 212, 255, 0.8);
            color: white;
            border: none;
            width: 60px;
            height: 60px;
            border-radius: 12px;
            font-size: 28px;
            cursor: pointer;
            transition: all 0.3s ease;
            z-index: 10;
            backdrop-filter: blur(10px);
        }

        .carousel-prev {
            left: 25px;
        }

        .carousel-next {
            right: 25px;
        }

        .carousel-prev:hover,
        .carousel-next:hover {
            background: #00d4ff;
            transform: translateY(-50%) scale(1.1);
        }

        .carousel-dots {
            position: absolute;
            bottom: 30px;
            left: 0;
            right: 0;
            display: flex;
            justify-content: center;
            gap: 15px;
            z-index: 10;
        }

        .carousel-dot {
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.5);
            cursor: pointer;
            transition: all 0.3s ease;
            border: 2px solid rgba(255, 255, 255, 0.3);
        }

        .carousel-dot:hover {
            background: rgba(255, 255, 255, 0.8);
            border-color: white;
        }

        .carousel-dot.active {
            background: #00d4ff;
            border-color: #00d4ff;
            transform: scale(1.4);
            box-shadow: 0 0 15px rgba(0, 212, 255, 0.5);
        }

        /* ===== 新增：FAQ折叠模式 - 科技风格 ===== */
        .faq-section {
            padding: 80px 20px;
            background: #f8f9fa;
        }

        .faq-container {
            max-width: 1100px;
            margin: 0 auto;
        }

        .faq-item {
            margin-bottom: 18px;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0, 10, 40, 0.08);
            background: white;
            border: 1px solid rgba(0, 212, 255, 0.2);
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            border-color: #00d4ff;
        }

        .faq-question {
            background: white;
            padding: 25px 35px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 700;
            font-size: 17px;
            color: #0a1628;
            transition: all 0.3s ease;
            border-left: 5px solid transparent;
            position: relative;
        }

        .faq-question::after {
            content: '+';
            font-size: 28px;
            font-weight: 300;
            color: #00d4ff;
            transition: all 0.3s ease;
        }

        .faq-item.active .faq-question {
            background: linear-gradient(135deg, #00d4ff, #0099cc);
            color: white;
            border-left-color: #0099cc;
            padding-left: 40px;
        }

        .faq-item.active .faq-question::after {
            content: '-';
            color: white;
        }

        .faq-answer {
            background: #f8f9fa;
            padding: 0 35px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }

        .faq-item.active .faq-answer {
            padding: 25px 35px 35px;
            max-height: 500px;
        }

        .faq-answer p {
            line-height: 1.9;
            color: #555;
            font-size: 15px;
        }

        /* ===== 新增：联系表单询盘模块 - 科技风格 ===== */
        .contact-form-section {
            padding: 100px 20px;
            background: linear-gradient(135deg, #0a1628 0%, #1a2845 100%);
            color: white;
            position: relative;
            overflow: hidden;
        }

        .contact-form-section::before {
            content: '';
            position: absolute;
            top: -100px;
            left: -200px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
            animation: float 8s ease-in-out infinite;
        }

        .contact-form-section::after {
            content: '';
            position: absolute;
            bottom: -100px;
            right: -200px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.08) 0%, transparent 70%);
            animation: pulse 6s ease-in-out infinite;
        }

        .contact-form-section .section-title {
            color: white;
            position: relative;
            z-index: 1;
        }

        .contact-form-section .section-title::after {
            background: linear-gradient(90deg, #00d4ff, white);
        }

        .contact-form-section .section-subtitle {
            color: rgba(255, 255, 255, 0.8);
            position: relative;
            z-index: 1;
        }

        .contact-form-container {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            position: relative;
            z-index: 1;
        }

        .contact-info {
            padding: 20px;
        }

        .contact-info h3 {
            font-size: 32px;
            margin-bottom: 30px;
            color: #00d4ff;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 2px;
        }

        .contact-info p {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 30px;
        }

        .contact-details {
            margin-top: 40px;
        }

        .contact-item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 25px;
            padding: 20px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 10px;
            border: 1px solid rgba(0, 212, 255, 0.2);
            transition: all 0.3s ease;
        }

        .contact-item:hover {
            background: rgba(0, 212, 255, 0.1);
            border-color: #00d4ff;
            transform: translateX(10px);
        }

        .contact-icon {
            font-size: 28px;
            margin-right: 20px;
            color: #00d4ff;
            flex-shrink: 0;
        }

        .contact-text h4 {
            font-size: 16px;
            margin-bottom: 5px;
            color: white;
            font-weight: 700;
        }

        .contact-text p,
        .contact-text a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            margin: 0;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .contact-text a:hover {
            color: #00d4ff;
        }

        .form-wrapper {
            background: white;
            padding: 50px;
            border-radius: 15px;
            box-shadow: 0 20px 60px rgba(0, 212, 255, 0.2);
            position: relative;
            overflow: hidden;
        }

        .form-wrapper::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, #00d4ff, #0099cc);
        }

        .form-group {
            margin-bottom: 25px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 700;
            color: #0a1628;
            margin-bottom: 10px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .form-group label span {
            color: #ff4757;
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 15px 20px;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            font-size: 15px;
            color: #333;
            background: #f9f9f9;
            transition: all 0.3s ease;
            font-family: Arial, Helvetica, sans-serif;
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: #00d4ff;
            background: white;
            box-shadow: 0 0 0 4px rgba(0, 212, 255, 0.1);
        }

        .form-group textarea {
            resize: vertical;
            min-height: 120px;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .form-submit {
            display: block;
            width: 100%;
            padding: 18px;
            background: linear-gradient(90deg, #00d4ff, #0099cc);
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 8px 25px rgba(0, 212, 255, 0.4);
        }

        .form-submit:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 35px rgba(0, 212, 255, 0.5);
        }

        .form-submit:active {
            transform: translateY(-1px);
        }

        .form-note {
            margin-top: 20px;
            font-size: 13px;
            color: #666;
            line-height: 1.6;
            text-align: center;
        }

        /* 响应式设计 */
        @media (max-width: 1024px) {
            .navbar {
                padding: 0 15px;
            }

            .main-nav > li > a {
                padding: 25px 12px;
                font-size: 14px;
            }
        }

        @media (max-width: 992px) {
            .image-text-container {
                flex-direction: column;
            }

            .image-wrapper,
            .text-wrapper {
                width: 100%;
            }

            .image-wrapper {
                height: 350px;
            }

            .text-wrapper {
                padding: 50px 30px;
            }

            .contact-form-container {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .form-wrapper {
                padding: 40px 30px;
            }

            .carousel-slide img {
                height: 400px;
            }

            .carousel-caption {
                padding: 35px;
            }

            .carousel-caption h4 {
                font-size: 26px;
            }

            .hero h1 {
                font-size: 36px;
            }

            .hero-stats {
                flex-direction: column;
                gap: 20px;
            }

            .stat-item {
                width: 100%;
            }
        }

        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }

            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #0a1628;
                flex-direction: column;
                padding: 20px 0;
            }

            .main-nav.active {
                display: flex;
            }

            .main-nav > li > a {
                padding: 15px 20px;
            }

            .dropdown-menu {
                position: static;
                opacity: 1;
                visibility: visible;
                transform: none;
                display: none;
                box-shadow: none;
                background: #1a2845;
                padding-left: 20px;
                border-top: none;
            }

            .main-nav > li:hover > .dropdown-menu,
            .main-nav > li.active > .dropdown-menu {
                display: none;
            }

            .main-nav > li.active .dropdown-menu {
                display: block;
            }

            .dropdown-menu .dropdown-menu {
                position: static;
                border-left: none;
                padding-left: 20px;
            }

            .hero h1 {
                font-size: 32px;
                letter-spacing: 1px;
            }

            .hero p {
                font-size: 16px;
            }

            .hero-stats {
                gap: 15px;
            }

            .stat-item {
                padding: 20px;
            }

            .stat-number {
                font-size: 32px;
            }

            .products-grid {
                grid-template-columns: 1fr;
            }

            .floating-buttons {
                right: 15px;
            }

            .floating-btn {
                width: 45px;
                height: 45px;
                font-size: 18px;
            }

            .text-wrapper {
                padding: 40px 25px;
            }

            .text-wrapper h3 {
                font-size: 28px;
            }

            .carousel-slide img {
                height: 300px;
            }

            .carousel-caption {
                padding: 25px;
            }

            .carousel-caption h4 {
                font-size: 22px;
            }

            .carousel-prev,
            .carousel-next {
                width: 45px;
                height: 45px;
                font-size: 22px;
            }

            .carousel-prev {
                left: 15px;
            }

            .carousel-next {
                right: 15px;
            }

            .faq-question {
                padding: 18px 25px;
                font-size: 15px;
            }

            .faq-item.active .faq-answer {
                padding: 18px 25px 25px;
            }
        }