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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            overflow-x: hidden;
        }

        /* 头部导航 */
        header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 0;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
        }

        nav {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 30px;
        }

        .logo {
            font-size: 26px;
            font-weight: bold;
            letter-spacing: 2px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 30px;
            align-items: center;
        }

        .nav-menu a {
            color: white;
            text-decoration: none;
            padding: 8px 15px;
            transition: all 0.3s;
            border-radius: 8px;
            font-weight: 500;
        }

        .nav-menu a:hover {
            background: rgba(255,255,255,0.25);
            transform: translateY(-2px);
        }

        .trial-btn {
            background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            color: white !important;
            padding: 12px 30px !important;
            border-radius: 25px;
            font-weight: bold;
            box-shadow: 0 4px 15px rgba(245, 87, 108, 0.4);
        }

        .trial-btn:hover {
            box-shadow: 0 6px 20px rgba(245, 87, 108, 0.6);
            transform: translateY(-3px) !important;
        }

        /* 侧边客服栏 */
        .sidebar-contact {
            position: fixed;
            right: 20px;
            top: 50%;
            transform: translateY(-50%);
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .contact-item {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 15px;
            border-radius: 50%;
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

        .contact-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            opacity: 0;
            transition: opacity 0.3s;
        }

        .contact-item:hover::before {
            opacity: 1;
        }

        .contact-item svg {
            position: relative;
            z-index: 1;
            width: 30px;
            height: 30px;
            fill: white;
        }

        .contact-item:hover {
            transform: scale(1.15);
            box-shadow: 0 6px 25px rgba(102, 126, 234, 0.6);
        }

        /* 英雄区域 */
        .hero {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 150px 30px 100px;
            margin-top: 70px;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: 
                radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
            animation: pulse 15s ease-in-out infinite;
        }

        @keyframes pulse {
            0%, 100% { opacity: 0.5; }
            50% { opacity: 1; }
        }

        .hero::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.15)"/></svg>');
            opacity: 0.4;
        }

        .hero-content {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-text h1 {
            font-size: 48px;
            margin-bottom: 25px;
            line-height: 1.2;
            text-shadow: 2px 2px 8px rgba(0,0,0,0.2);
        }

        .hero-text p {
            font-size: 20px;
            margin-bottom: 40px;
            opacity: 0.95;
            line-height: 1.8;
            text-shadow: 1px 1px 4px rgba(0,0,0,0.1);
        }

        .cta-button {
            display: inline-block;
            background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            color: white;
            padding: 18px 45px;
            text-decoration: none;
            border-radius: 30px;
            font-weight: bold;
            font-size: 18px;
            transition: all 0.3s;
            box-shadow: 0 8px 25px rgba(245, 87, 108, 0.4);
        }

        .cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 35px rgba(245, 87, 108, 0.6);
        }

        .hero-image {
            text-align: center;
            position: relative;
        }

        .hero-image img {
            max-width: 100%;
            height: auto;
            border-radius: 20px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.3);
            transition: transform 0.3s;
        }

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

        /* 服务器配置区域 */
        .servers {
            padding: 100px 30px;
            background: #f8f9fa;
        }

        .container {
            max-width: 1400px;
            margin: 0 auto;
        }

        .section-title {
            text-align: center;
            font-size: 42px;
            margin-bottom: 20px;
            color: #1a1a1a;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .section-subtitle {
            text-align: center;
            font-size: 18px;
            color: #666;
            margin-bottom: 60px;
        }

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

        .tab-button {
            padding: 12px 30px;
            border: 2px solid #e0e0e0;
            background: white;
            color: #666;
            border-radius: 30px;
            cursor: pointer;
            font-size: 16px;
            transition: all 0.3s;
            font-weight: 500;
        }

        .tab-button:hover {
            border-color: #667eea;
            color: #667eea;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(102, 126, 234, 0.2);
        }

        .tab-button.active {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border-color: transparent;
            box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
        }

        .server-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }

        .server-card {
            background: white;
            border: 2px solid #e9ecef;
            border-radius: 20px;
            padding: 35px 25px;
            text-align: center;
            transition: all 0.4s;
            position: relative;
            overflow: hidden;
        }

        .server-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 5px;
            background: linear-gradient(90deg, #667eea, #764ba2);
            transform: scaleX(0);
            transition: transform 0.4s;
        }

        .server-card:hover {
            border-color: #667eea;
            box-shadow: 0 15px 40px rgba(102, 126, 234, 0.25);
            transform: translateY(-8px);
        }

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

        .server-name {
            font-size: 24px;
            font-weight: bold;
            margin-bottom: 15px;
            color: #1a1a1a;
        }

        .server-location {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            margin-bottom: 20px;
            color: #666;
            font-size: 16px;
        }

        .server-price {
            font-size: 42px;
            font-weight: bold;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin: 20px 0;
        }

        .server-price span {
            font-size: 20px;
            color: #666;
        }

        .server-specs {
            list-style: none;
            margin: 25px 0;
            text-align: left;
        }

        .server-specs li {
            padding: 12px 0;
            border-bottom: 1px solid #f0f0f0;
            display: flex;
            align-items: center;
            gap: 10px;
            color: #555;
            transition: all 0.3s;
        }

        .server-specs li:hover {
            color: #667eea;
            padding-left: 5px;
        }

        .server-specs li::before {
            content: '✓';
            color: #00D084;
            font-weight: bold;
            font-size: 18px;
        }

        .buy-button {
            display: block;
            width: 100%;
            padding: 15px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            text-decoration: none;
            border-radius: 10px;
            font-weight: bold;
            transition: all 0.3s;
            margin-top: 20px;
            box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
        }

        .buy-button:hover {
            box-shadow: 0 8px 25px rgba(102, 126, 234, 0.5);
            transform: scale(1.02);
        }

        .tab-content {
            display: none;
        }

        .tab-content.active {
            display: block;
            animation: fadeIn 0.5s;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* 特性区域 */
        .features {
            padding: 100px 30px;
            background: white;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }

        .feature-card {
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            padding: 40px 30px;
            border-radius: 20px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
            transition: all 0.4s;
            border: 2px solid transparent;
            text-align: center;
        }

        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(102, 126, 234, 0.2);
            border-color: #667eea;
            background: white;
        }

        .feature-icon {
            font-size: 48px;
            margin-bottom: 20px;
            transition: transform 0.3s;
        }

        .feature-card:hover .feature-icon {
            transform: scale(1.2);
        }

        .feature-card h3 {
            font-size: 22px;
            margin-bottom: 15px;
            color: #1a1a1a;
        }

        .feature-card p {
            color: #666;
            line-height: 1.8;
            font-size: 15px;
        }

        /* 技术优势 */
        .tech-advantages {
            padding: 100px 30px;
            background: linear-gradient(135deg, #2d3561 0%, #1f2544 100%);
            position: relative;
        }

        .tech-advantages::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: 
                radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(118, 75, 162, 0.1) 0%, transparent 50%);
        }

        .tech-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 40px;
            margin-top: 50px;
            position: relative;
        }

        .tech-card {
            background: rgba(255, 255, 255, 0.08);
            padding: 40px;
            border-radius: 20px;
            box-shadow: 0 5px 25px rgba(0,0,0,0.2);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all 0.4s;
        }

        .tech-card:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-5px);
            box-shadow: 0 10px 35px rgba(102, 126, 234, 0.3);
            border-color: rgba(102, 126, 234, 0.5);
        }

        .tech-card h3 {
            font-size: 26px;
            margin-bottom: 25px;
            color: white;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .tech-card ul {
            list-style: none;
        }

        .tech-card li {
            padding: 12px 0;
            color: rgba(255, 255, 255, 0.85);
            display: flex;
            align-items: flex-start;
            gap: 12px;
            line-height: 1.8;
            transition: all 0.3s;
            font-size: 15px;
        }

        .tech-card li:hover {
            color: white;
            padding-left: 5px;
        }

        .tech-card li::before {
            content: '▸';
            color: #f093fb;
            font-size: 20px;
            flex-shrink: 0;
        }

        /* 数据中心 */
        .datacenter {
            padding: 100px 30px;
            background: #f8f9fa;
        }

        .datacenter-content {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .datacenter-info h2 {
            font-size: 42px;
            margin-bottom: 30px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .datacenter-info p {
            font-size: 18px;
            margin-bottom: 30px;
            color: #666;
        }

        .datacenter-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .dc-feature {
            background: white;
            padding: 25px;
            border-radius: 15px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.08);
            transition: all 0.3s;
            border: 2px solid transparent;
        }

        .dc-feature:hover {
            border-color: #667eea;
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(102, 126, 234, 0.2);
        }

        .dc-feature h4 {
            font-size: 18px;
            margin-bottom: 10px;
            color: #1a1a1a;
        }

        .dc-feature p {
            color: #666;
            font-size: 14px;
        }

        .datacenter-image {
            text-align: center;
        }

        .datacenter-image img {
            width: 100%;
            max-width: 600px;
            border-radius: 20px;
            box-shadow: 0 15px 50px rgba(0,0,0,0.2);
            transition: all 0.3s;
        }

        .datacenter-image img:hover {
            transform: scale(1.05);
            box-shadow: 0 20px 60px rgba(102, 126, 234, 0.3);
        }

        /* 服务保障 */
        .guarantees {
            padding: 100px 30px;
            background: white;
        }

        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }

        .guarantee-item {
            text-align: center;
            padding: 35px;
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            border-radius: 20px;
            transition: all 0.4s;
            border: 2px solid transparent;
        }

        .guarantee-item:hover {
            background: white;
            border-color: #667eea;
            transform: translateY(-8px);
            box-shadow: 0 10px 30px rgba(102, 126, 234, 0.2);
        }

        .guarantee-icon {
            font-size: 50px;
            margin-bottom: 20px;
            transition: transform 0.3s;
        }

        .guarantee-item:hover .guarantee-icon {
            transform: scale(1.2);
        }

        .guarantee-item h4 {
            font-size: 20px;
            color: #1a1a1a;
        }

        /* ========== 产品横幅展示模块 ========== */
        .product-banners {
            padding: 100px 30px;
            background: #f0f2f8;
            position: relative;
            overflow: hidden;
        }

        .product-banners::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 10% 20%, rgba(102,126,234,0.08) 0%, transparent 55%),
                        radial-gradient(ellipse at 90% 80%, rgba(118,75,162,0.07) 0%, transparent 55%);
            pointer-events: none;
        }

        .banner-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            margin-top: 60px;
        }

        .banner-card {
            background: #ffffff;
            border-radius: 22px;
            overflow: hidden;
            box-shadow: 0 6px 28px rgba(0,0,0,0.08);
            border: 2px solid transparent;
            transition: transform 0.4s cubic-bezier(.22,.9,.44,1), box-shadow 0.4s, border-color 0.3s;
        }

        .banner-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 50px rgba(102,126,234,0.2);
            border-color: #667eea;
        }

        /* 4:3 图片区域 */
        .banner-image-wrap {
            width: 100%;
            aspect-ratio: 4 / 3;
            overflow: hidden;
            position: relative;
        }

        .banner-bg {
            width: 100%;
            height: 100%;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }

        /* 真实图片样式 */
        .banner-img-wrap {
            position: relative;
            overflow: hidden;
        }

        .banner-real-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
            transition: transform 0.5s cubic-bezier(.22,.9,.44,1);
        }

        .banner-card:hover .banner-real-img {
            transform: scale(1.06);
        }

        .banner-img-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(
                to bottom,
                rgba(0,0,0,0.08) 0%,
                rgba(0,0,0,0.0) 35%,
                rgba(0,0,0,0.48) 100%
            );
            pointer-events: none;
            z-index: 1;
        }

        /* 徽标和标签层级提升到图片之上 */
        .banner-badge,
        .banner-img-label {
            z-index: 2;
        }

        /* 图标下方的标题标签 */
        .banner-img-label {
            position: absolute;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            background: rgba(0,0,0,0.28);
            backdrop-filter: blur(8px);
            color: white;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            padding: 6px 18px;
            border-radius: 20px;
            border: 1px solid rgba(255,255,255,0.2);
            white-space: nowrap;
            z-index: 2;
        }

        /* 最受欢迎徽标 */
        .banner-badge {
            position: absolute;
            top: 18px;
            right: 18px;
            background: linear-gradient(135deg, #f093fb, #f5576c);
            color: white;
            font-size: 12px;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 20px;
            letter-spacing: 0.5px;
            box-shadow: 0 4px 14px rgba(245,87,108,0.45);
            z-index: 3;
        }

        /* 卡片内容区 */
        .banner-body {
            padding: 28px 28px 32px;
        }

        /* 小标签 */
        .banner-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 700;
            letter-spacing: 1.2px;
            text-transform: uppercase;
            color: #667eea;
            background: rgba(102,126,234,0.1);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
        }

        .banner-tag-orange {
            color: #f97316;
            background: rgba(249,115,22,0.1);
        }

        .banner-tag-red {
            color: #ef4444;
            background: rgba(239,68,68,0.1);
        }

        .banner-title {
            font-size: 24px;
            font-weight: 800;
            color: #1a1a2e;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .banner-desc {
            font-size: 14px;
            color: #666;
            line-height: 1.85;
            margin-bottom: 20px;
        }

        /* 关键词列表 */
        .banner-keywords {
            list-style: none;
            margin-bottom: 26px;
            display: flex;
            flex-direction: column;
            gap: 9px;
        }

        .banner-keywords li {
            font-size: 13.5px;
            color: #444;
            display: flex;
            align-items: center;
            gap: 9px;
            transition: color 0.2s, padding-left 0.2s;
        }

        .banner-keywords li:hover {
            color: #667eea;
            padding-left: 4px;
        }

        .kw-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: linear-gradient(135deg, #667eea, #764ba2);
            flex-shrink: 0;
        }

        .kw-dot-orange {
            background: linear-gradient(135deg, #f97316, #ea580c);
        }

        .kw-dot-red {
            background: linear-gradient(135deg, #ef4444, #9333ea);
        }

        /* 按钮 */
        .banner-btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 14px;
            text-decoration: none;
            transition: all 0.3s;
            letter-spacing: 0.3px;
        }

        .banner-btn-primary {
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
            box-shadow: 0 5px 18px rgba(102,126,234,0.4);
        }

        .banner-btn-primary:hover {
            box-shadow: 0 8px 26px rgba(102,126,234,0.6);
            transform: scale(1.04);
        }

        .banner-btn-orange {
            background: linear-gradient(135deg, #f97316, #ea580c);
            color: white;
            box-shadow: 0 5px 18px rgba(249,115,22,0.4);
        }

        .banner-btn-orange:hover {
            box-shadow: 0 8px 26px rgba(249,115,22,0.6);
            transform: scale(1.04);
        }

        .banner-btn-red {
            background: linear-gradient(135deg, #ef4444, #9333ea);
            color: white;
            box-shadow: 0 5px 18px rgba(239,68,68,0.35);
        }

        .banner-btn-red:hover {
            box-shadow: 0 8px 26px rgba(239,68,68,0.55);
            transform: scale(1.04);
        }

        /* FAQ */
        .faq {
            padding: 100px 30px;
            background: #f8f9fa;
        }

        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
            margin-top: 50px;
        }

        .faq-item {
            background: white;
            padding: 30px;
            border-radius: 20px;
            box-shadow: 0 3px 15px rgba(0,0,0,0.05);
            cursor: pointer;
            transition: all 0.4s;
            border: 2px solid transparent;
        }

        .faq-item:hover {
            box-shadow: 0 8px 30px rgba(102, 126, 234, 0.2);
            border-color: #667eea;
            transform: translateY(-3px);
        }

        .faq-question {
            font-size: 20px;
            font-weight: bold;
            color: #1a1a1a;
            margin-bottom: 15px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-answer {
            color: #666;
            line-height: 1.8;
        }

        /* 页脚 */
        footer {
            background: linear-gradient(135deg, #2d3561 0%, #1f2544 100%);
            color: white;
            padding: 60px 30px 30px;
        }

        .footer-content {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-section h3 {
            margin-bottom: 20px;
            font-size: 20px;
        }

        .footer-section ul {
            list-style: none;
        }

        .footer-section a {
            color: rgba(255,255,255,0.7);
            text-decoration: none;
            display: block;
            padding: 8px 0;
            transition: all 0.3s;
        }

        .footer-section a:hover {
            color: white;
            padding-left: 5px;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: rgba(255,255,255,0.6);
        }

        .highlight {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            font-weight: 600;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .banner-grid {
                grid-template-columns: 1fr 1fr;
            }
            .banner-grid .banner-card:last-child {
                grid-column: 1 / -1;
                max-width: 480px;
                margin: 0 auto;
            }
        }

        @media (max-width: 968px) {
            .hero-content,
            .tech-grid,
            .datacenter-content,
            .faq-grid {
                grid-template-columns: 1fr;
            }

            .hero-text h1 {
                font-size: 32px;
            }

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

            .nav-menu {
                display: none;
            }

            .sidebar-contact {
                right: 10px;
            }

            .contact-item {
                width: 50px;
                height: 50px;
            }

            .contact-item svg {
                width: 24px;
                height: 24px;
            }
        }

        @media (max-width: 640px) {
            .banner-grid {
                grid-template-columns: 1fr;
            }
            .banner-grid .banner-card:last-child {
                grid-column: auto;
                max-width: none;
            }
        }

        /* 全局卡片动画入场 */
        .global-network-info > div > div:hover {
            background: rgba(255, 255, 255, 0.15) !important;
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
        }
    
/* Visible floating customer service */
.sidebar-contact{position:fixed!important;right:18px!important;top:auto!important;bottom:88px!important;transform:none!important;z-index:9999!important;display:flex!important;flex-direction:column!important;gap:10px!important;align-items:flex-end!important;}
.sidebar-contact .contact-item{width:138px!important;min-width:138px!important;height:50px!important;border-radius:25px!important;padding:0 13px!important;gap:9px!important;display:flex!important;align-items:center!important;justify-content:flex-start!important;background:linear-gradient(135deg,#7b72ef 0%,#5e55c8 100%)!important;color:#fff!important;font-size:13px!important;font-weight:800!important;white-space:nowrap!important;box-shadow:0 12px 28px rgba(78,69,170,.32)!important;border:1px solid rgba(255,255,255,.28)!important;text-decoration:none!important;overflow:visible!important;}
.sidebar-contact .contact-item:hover{transform:translateY(-3px)!important;box-shadow:0 16px 34px rgba(78,69,170,.42)!important;background:linear-gradient(135deg,#635bdf 0%,#4d43b7 100%)!important;}
.sidebar-contact .sidebar-icon{width:31px;height:31px;border-radius:50%;background:#fff;display:inline-flex;align-items:center;justify-content:center;flex:0 0 31px;box-shadow:inset 0 0 0 1px rgba(94,85,200,.08);}
.sidebar-contact .sidebar-icon img{width:22px;height:22px;display:block;object-fit:contain;filter:none!important;}
.sidebar-contact .contact-label{display:inline-block;color:#fff!important;line-height:1;}
.footer-service-full-link a{color:#8ea2ff!important;font-weight:800;text-decoration:underline;word-break:break-all;}
@media(max-width:768px){.sidebar-contact{right:10px!important;bottom:72px!important}.sidebar-contact .contact-item{width:122px!important;min-width:122px!important;height:46px!important;border-radius:23px!important;padding:0 10px!important;font-size:12px!important}.sidebar-contact .sidebar-icon{width:28px;height:28px;flex-basis:28px}.sidebar-contact .sidebar-icon img{width:20px;height:20px}}