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

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            background: #fafbfc;
        }

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

        /* Banner Carousel */
        .banner-carousel {
            position: relative;
            height: 600px;
            overflow: hidden;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        }

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

        .carousel-slide {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            opacity: 0;
            transition: opacity 1.2s ease-in-out;
            background: #d1d5e0;
            color: white;
            display: flex;
            align-items: center;
        }

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

        .carousel-slide:nth-child(2) {
            background: #ebaea9;
        }

        .carousel-slide:nth-child(3) {
            background: #bcc9dc;
        }

        .slide-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 40px;
        }

        .slide-text {
            flex: 1;
            max-width: 550px;
        }

        .slide-image {
            flex: 1;
            text-align: center;
        }

        .logo {
            display: flex;
            align-items: center;
            margin-bottom: 30px;
        }

        .logo-icon {
            width: 50px;
            height: 50px;
            background: rgba(255,255,255,0.2);
            border-radius: 12px;
            margin-right: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            backdrop-filter: blur(10px);
        }

        .slide-title {
            font-size: 42px;
            font-weight: 700;
            margin-bottom: 25px;
            line-height: 1.2;
            text-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        .slide-subtitle {
            font-size: 18px;
            margin-bottom: 40px;
            opacity: 0.95;
            line-height: 1.8;
        }

        .slide-buttons {
            display: flex;
            gap: 20px;
        }

        /* Carousel Navigation */
        .carousel-nav {
            position: absolute;
            bottom: 40px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 12px;
            z-index: 10;
        }

        .nav-dot {
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.4);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .nav-dot.active {
            background: white;
            transform: scale(1.2);
        }

        .carousel-arrow {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            background: rgba(255, 255, 255, 0.15);
            border: none;
            color: white;
            font-size: 28px;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            cursor: pointer;
            transition: all 0.3s ease;
            z-index: 10;
            backdrop-filter: blur(10px);
        }

        .carousel-arrow:hover {
            background: rgba(255, 255, 255, 0.25);
            transform: translateY(-50%) scale(1.1);
        }

        .carousel-arrow.prev {
            left: 30px;
        }

        .carousel-arrow.next {
            right: 30px;
        }

        .btn {
            padding: 15px 35px;
            border: none;
            border-radius: 30px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
            text-align: center;
            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: left 0.5s;
        }

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

        .btn-primary {
            background: white;
            color: #d80d0d;
            box-shadow: 0 8px 25px rgba(0,0,0,0.15);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 35px rgba(0,0,0,0.2);
        }

        .btn-secondary {
            background: transparent;
            color: white;
            border: 2px solid rgba(255,255,255,0.8);
            backdrop-filter: blur(10px);
        }

        .btn-secondary:hover {
            background: rgba(255,255,255,0.1);
            transform: translateY(-3px);
        }

        /* Features Section */
        .features {
            padding: 100px 0;
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
        }

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

        .feature-card {
            background: white;
            padding: 40px 30px;
            border-radius: 20px;
            text-align: center;
            box-shadow: 0 10px 40px rgba(0,0,0,0.08);
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, #ff6b82, #e00225);
        }

        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 60px rgba(0,0,0,0.15);
        }

        .feature-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, #ff6b82, #e00225 );
            border-radius: 20px;
            margin: 0 auto 25px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 32px;
            box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 15px;
            color: #2c3e50;
        }

        .feature-card p {
            color: #6c757d;
            line-height: 1.7;
        }

        /* Services Section */
        .services {
            padding: 100px 0;
            background: white;
        }

        .section-title {
            text-align: center;
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 20px;
            color: #2c3e50;
            position: relative;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, #ff6b82, #e00225);
            border-radius: 2px;
        }

        .section-subtitle {
            text-align: center;
            font-size: 18px;
            color: #6c757d;
            margin-bottom: 60px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .services-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            margin-bottom: 50px;
        }

        .service-card {
            display: flex;
            align-items: center;
            background: white;
            border-radius: 25px;
            overflow: hidden;
            box-shadow: 0 15px 50px rgba(0,0,0,0.08);
            transition: all 0.4s ease;
            min-height: 220px;
            border: 1px solid #f1f3f4;
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 25px 70px rgba(0,0,0,0.15);
        }

        .service-image {
            width: 200px;
            height: 200px;
            position: relative;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 60px;
            color: white;
            margin-left: 20px;
            border-radius: 15px;
        }

        .service-image-img {
            width: 200px;
            height: 200px;
            border-radius: 15px;
        }

        .service-card:nth-child(2) .service-image {
            background: linear-gradient(135deg, #ff6b6b, #ee5a24);
        }

        .service-card:nth-child(3) .service-image {
            background: linear-gradient(135deg, #4834d4, #686de0);
        }

        .service-card:nth-child(4) .service-image {
            background: linear-gradient(135deg, #00d2d3, #54a0ff);
        }

        .service-content {
            padding: 40px;
            flex: 1;
        }

        .service-title {
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 15px;
            color: #2c3e50;
        }

        .service-description {
            color: #6c757d;
            line-height: 1.8;
            font-size: 16px;
        }

        /* Products Section */
        .products {
            padding: 100px 0;
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
        }

        .product-filters {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 60px;
            flex-wrap: wrap;
        }

        .filter-btn {
            padding: 12px 25px;
            border: 2px solid #e9ecef;
            background: white;
            border-radius: 25px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-weight: 500;
            color: #6c757d;
        }

        .filter-btn.active,
        .filter-btn:hover {
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
            border-color: transparent;
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
        }

        .products-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 40px;
        }

        .product-card {
            background: white;
            border-radius: 25px;
            padding: 40px 30px;
            text-align: center;
            box-shadow: 0 15px 50px rgba(0,0,0,0.08);
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
            border: 1px solid #f1f3f4;
        }

        /* 为不同产品分类添加颜色区分 */
        .product-card[data-category="云主机"]::before {
            background: linear-gradient(90deg, #667eea, #764ba2);
        }

        .product-card[data-category="云主机"] .product-price {
            background: linear-gradient(135deg, #667eea, #764ba2);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .product-card[data-category="云主机"] .btn-primary {
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
        }

        .product-card[data-category="云存储"]::before {
            background: linear-gradient(90deg, #10ac84, #00d2d3);
        }

        .product-card[data-category="云存储"] .product-price {
            background: linear-gradient(135deg, #10ac84, #00d2d3);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .product-card[data-category="云存储"] .btn-primary {
            background: linear-gradient(135deg, #10ac84, #00d2d3);
            color: white;
        }

        .product-card[data-category="云数据库"]::before {
            background: linear-gradient(90deg, #8e44ad, #9b59b6);
        }

        .product-card[data-category="云数据库"] .product-price {
            background: linear-gradient(135deg, #8e44ad, #9b59b6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .product-card[data-category="云数据库"] .btn-primary {
            background: linear-gradient(135deg, #8e44ad, #9b59b6);
            color: white;
        }

        .product-card[data-category="网络"]::before {
            background: linear-gradient(90deg, #ff6b6b, #ee5a24);
        }

        .product-card[data-category="网络"] .product-price {
            background: linear-gradient(135deg, #ff6b6b, #ee5a24);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .product-card[data-category="网络"] .btn-primary {
            background: linear-gradient(135deg, #ff6b6b, #ee5a24);
            color: white;
        }

        .product-card[data-category="安全防护"]::before {
            background: linear-gradient(90deg, #e74c3c, #c0392b);
        }

        .product-card[data-category="安全防护"] .product-price {
            background: linear-gradient(135deg, #e74c3c, #c0392b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .product-card[data-category="安全防护"] .btn-primary {
            background: linear-gradient(135deg, #e74c3c, #c0392b);
            color: white;
        }

        .product-card[data-category="CDN加速"]::before {
            background: linear-gradient(90deg, #00cec9, #55a3ff);
        }

        .product-card[data-category="CDN加速"] .product-price {
            background: linear-gradient(135deg, #00cec9, #55a3ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .product-card[data-category="CDN加速"] .btn-primary {
            background: linear-gradient(135deg, #00cec9, #55a3ff);
            color: white;
        }

        .product-card[data-category="其它"]::before {
            background: linear-gradient(90deg, #95a5a6, #7f8c8d);
        }

        .product-card[data-category="其它"] .product-price {
            background: linear-gradient(135deg, #95a5a6, #7f8c8d);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .product-card[data-category="其它"] .btn-primary {
            background: linear-gradient(135deg, #95a5a6, #7f8c8d);
            color: white;
        }

        /* 为筛选按钮也添加对应的颜色 */
        .filter-btn[data-category="云主机"].active,
        .filter-btn[data-category="云主机"]:hover {
            background: linear-gradient(135deg, #667eea, #764ba2);
        }

        .filter-btn[data-category="云存储"].active,
        .filter-btn[data-category="云存储"]:hover {
            background: linear-gradient(135deg, #10ac84, #00d2d3);
        }

        .filter-btn[data-category="云数据库"].active,
        .filter-btn[data-category="云数据库"]:hover {
            background: linear-gradient(135deg, #8e44ad, #9b59b6);
        }

        .filter-btn[data-category="网络"].active,
        .filter-btn[data-category="网络"]:hover {
            background: linear-gradient(135deg, #ff6b6b, #ee5a24);
        }

        .filter-btn[data-category="安全防护"].active,
        .filter-btn[data-category="安全防护"]:hover {
            background: linear-gradient(135deg, #e74c3c, #c0392b);
        }

        .filter-btn[data-category="CDN加速"].active,
        .filter-btn[data-category="CDN加速"]:hover {
            background: linear-gradient(135deg, #00cec9, #55a3ff);
        }

        .filter-btn[data-category="其它"].active,
        .filter-btn[data-category="其它"]:hover {
            background: linear-gradient(135deg, #95a5a6, #7f8c8d);
        }

        .product-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 6px;
        }

        .product-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 25px 70px rgba(0,0,0,0.15);
        }

        .product-card h3 {
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 25px;
            color: #2c3e50;
        }

        .product-features {
            list-style: none;
            margin: 30px 0;
            text-align: left;
        }

        .product-features li {
            padding: 12px 0;
            color: #6c757d;
            border-bottom: 1px solid #f1f3f4;
            position: relative;
            padding-left: 25px;
            font-size: 15px;
        }

        .product-features li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: #28a745;
            font-weight: bold;
        }

        .product-features li:last-child {
            border-bottom: none;
        }

        .product-price {
            font-size: 32px;
            font-weight: 700;
            margin: 25px 0;
        }

        .product-card .btn-primary {
            color: white;
            width: 100%;
            margin-top: 20px;
        }

        .product-card.hidden {
            display: none;
        }

        /* Registration Section */
        .registration {
            padding: 100px 0;
            background: white;
        }

        .registration-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
        }

        .registration-column {
            background: white;
            border-radius: 25px;
            padding: 40px;
            box-shadow: 0 15px 50px rgba(0,0,0,0.08);
            border: 1px solid #f1f3f4;
        }

        .registration-column h3 {
            background: linear-gradient(135deg, #ff6b82, #e00225);
            color: white;
            font-size: 22px;
            margin-bottom: 30px;
            padding: 20px;
            border-radius: 15px;
            text-align: center;
            font-weight: 600;
        }

        .registration-list {
            list-style: none;
        }

        .registration-list li {
            padding: 15px 0;
            border-bottom: 1px solid #f1f3f4;
            color: #6c757d;
            position: relative;
            /* 移除 padding-left: 30px; */
        }

        /* 删除或注释掉这个规则 */
        /*
        .registration-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: #28a745;
            font-weight: bold;
            font-size: 16px;
        }
        */

        .registration-buttons {
            display: flex;
            gap: 15px;
            margin-top: 40px;
        }

        .registration-buttons .btn {
            flex: 1;
        }

        .registration-buttons .btn-primary {
            background: linear-gradient(135deg, #ff6b82, #e00225);
            color: white;
        }

        .registration-buttons .btn-secondary {
            background: transparent;
            color: #d80d0d;
            border: 2px solid #d80d0d;
        }

        /* Solutions Section */
        .solutions {
            padding: 100px 0;
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
        }

        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
        }

        .solution-card {
            background: white;
            border-radius: 25px;
            overflow: hidden;
            box-shadow: 0 15px 50px rgba(0,0,0,0.08);
            transition: all 0.4s ease;
            border: 1px solid #f1f3f4;
        }

        .solution-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 25px 70px rgba(0,0,0,0.15);
        }

        .solution-image {
            height: 220px;
            background: linear-gradient(135deg, #667eea, #764ba2);
            position: relative;
        }

        .solution-card:nth-child(2) .solution-image {
            background: linear-gradient(135deg, #ff6b6b, #ee5a24);
        }

        .solution-card:nth-child(3) .solution-image {
            background: linear-gradient(135deg, #4834d4, #686de0);
        }

        .solution-card:nth-child(4) .solution-image {
            background: linear-gradient(135deg, #00d2d3, #54a0ff);
        }

        .solution-card:nth-child(5) .solution-image {
            background: linear-gradient(135deg, #ff9ff3, #f368e0);
        }

        .solution-card:nth-child(6) .solution-image {
            background: linear-gradient(135deg, #feca57, #ff9ff3);
        }

        .solution-content {
            padding: 30px;
        }

        .solution-content h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 15px;
            color: #2c3e50;
        }

        .solution-content p {
            color: #6c757d;
            line-height: 1.7;
        }

        /* Why Choose Section */
        .why-choose {
            padding: 100px 0;
            background: white;
        }

        .why-choose-content {
            display: flex;
            align-items: center;
            gap: 80px;
        }

        .why-choose-text {
            flex: 1;
        }

        .why-choose-image {
            flex: 1;
            text-align: center;
        }

        .why-choose-text h3 {
            background: linear-gradient(135deg, #ff6b82, #e00225);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            font-size: 28px;
            margin-bottom: 25px;
            font-weight: 700;
        }

        .why-choose-text h4 {
            color: #2c3e50;
            margin: 25px 0 15px 0;
            font-size: 20px;
            font-weight: 600;
        }

        .why-choose-text p {
            color: #6c757d;
            line-height: 1.8;
            margin-bottom: 20px;
            font-size: 16px;
        }

        /* Support Section */
        .support {
            padding: 80px 0;
            background: linear-gradient(135deg, #ff6b82, #e00225);
            color: white;
        }

        .support-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 30px;
            text-align: center;
        }

        .support-item {
            padding: 30px 20px;
            transition: transform 0.3s ease;
        }

        .support-item:hover {
            transform: translateY(-5px);
        }

        .support-icon {
            width: 70px;
            height: 70px;
            background: rgba(255,255,255,0.15);
            border-radius: 20px;
            margin: 0 auto 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            backdrop-filter: blur(10px);
        }

        .support-item h4 {
            font-size: 18px;
            margin-bottom: 10px;
            font-weight: 600;
        }

        .support-item p {
            opacity: 0.9;
        }

        /* CTA Section */
        .cta {
            padding: 100px 0;
            text-align: center;
            background: #ffffff;
            color: white;
        }

        .cta h2 {
            font-size: 32px;
            margin-bottom: 40px;
            font-weight: 600;
            color: #333333;
        }

        .cta .btn-primary {
            background: #d80d0d;
            color: #ffffff;
            padding: 18px 50px;
            font-weight: 600;
            font-size: 18px;
        }

        .cta .btn-primary:hover {
            background: #f8f9fa;
            color: #2c3e50;
        }

        /* Footer */
        .footer {
            background: #1a1a1a;
            color: white;
            padding: 60px 0 40px;
        }

        .footer-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 30px;
            margin-bottom: 40px;
        }

        .footer-logos {
            display: flex;
            align-items: center;
            gap: 40px;
        }

        .partnership-text {
            color: #999;
            font-size: 14px;
            text-align: center;
            margin: 0 20px;
        }

        .footer-links {
            display: flex;
            gap: 40px;
        }

        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer-links a:hover {
            color: white;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #333;
            color: #999;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .slide-content {
                flex-direction: column;
                text-align: center;
                padding: 0 20px;
            }

            .slide-title {
                font-size: 32px;
            }

            .features-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .services-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .service-card {
                flex-direction: column;
                text-align: center;
            }

            .service-image {
                width: 100%;
                height: 150px;
            }

            .registration-content {
                grid-template-columns: 1fr;
            }

            .why-choose-content {
                flex-direction: column;
            }

            .footer-content {
                flex-direction: column;
                text-align: center;
            }

            .partnership-text {
                margin: 10px 0;
            }

            .solutions-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .support-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }