/* ========== 公共CSS部分 ========== */
        :root {
            --primary: #0066cc; /* 国际商务蓝 */
            --secondary: #00a8e8; /* 科技蓝 */
            --accent: #ff6b35; /* 活力橙 */
            --dark: #1a1a2e; /* 深色背景 */
            --light: #f8f9fa;
            --gray: #6c757d;
            --light-gray: #e9ecef;
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --border-radius: 6px;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        html {
            scroll-behavior: smooth;
        }
        
        body {
            font-family: 'Inter', sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #fff;
            overflow-x: hidden;
        }
        
        h1, h2, h3, h4, h5, h6 {
            font-family: 'Space Grotesk', sans-serif;
            font-weight: 600;
            line-height: 1.3;
            margin-bottom: 1rem;
        }
        
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        
        ul {
            list-style: none;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        .section-padding {
            padding: 80px 0;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 60px;
        }
        
        .section-title h2 {
            font-size: 2.5rem;
            color: var(--dark);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }
        
        .section-title h2:after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 3px;
            background-color: var(--accent);
        }
        
        .section-title p {
            max-width: 700px;
            margin: 20px auto 0;
            color: var(--gray);
            font-size: 1.1rem;
        }
        
        .btn {
            display: inline-block;
            padding: 12px 30px;
            border-radius: var(--border-radius);
            font-weight: 600;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            transition: var(--transition);
            cursor: pointer;
            border: none;
            font-family: 'Inter', sans-serif;
        }
        
        .btn-primary {
            background-color: var(--primary);
            color: white;
        }
        
        .btn-primary:hover {
            background-color: var(--secondary);
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(0, 102, 204, 0.2);
        }
        
        .btn-outline {
            background-color: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        
        .btn-outline:hover {
            background-color: var(--primary);
            color: white;
            transform: translateY(-2px);
        }
        
        .text-center {
            text-align: center;
        }
        
        /* ========== 顶部语言选择栏 ========== */
        .language-bar {
            background-color: var(--dark);
            padding: 8px 0;
            font-size: 0.85rem;
        }
        
        .language-selector {
            display: flex;
            justify-content: flex-end;
            align-items: center;
        }
        
        .language-selector span {
            color: rgba(255, 255, 255, 0.7);
            margin-right: 10px;
        }
        
        .language-links {
            display: flex;
        }
        
        .language-links a {
            color: rgba(255, 255, 255, 0.7);
            margin-left: 12px;
            padding: 2px 5px;
            border-radius: 3px;
            transition: var(--transition);
            font-weight: 500;
        }
        
        .language-links a:hover,
        .language-links a.active {
            color: white;
            background-color: rgba(255, 255, 255, 0.1);
        }
        
        /* ========== 导航栏 ========== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
        }
        
        .header.scrolled {
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
        }
        
        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            transition: var(--transition);
        }
        
        .header.scrolled .navbar {
            padding: 15px 0;
        }
        
        .logo {
            display: flex;
            align-items: center;
        }
        
        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 700;
            font-size: 1.2rem;
            margin-right: 10px;
        }
        
        /* LOGO文字循环渐变动画 */
        .logo-text {
            font-family: 'Space Grotesk', sans-serif;
            font-weight: 700;
            font-size: 2rem;
            color: var(--dark);
            position: relative;
            background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent), var(--primary));
            background-size: 300% 300%;
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            animation: logoGradient 8s ease infinite;
        }
        
        @keyframes logoGradient {
            0% {
                background-position: 0% 50%;
            }
            50% {
                background-position: 100% 50%;
            }
            100% {
                background-position: 0% 50%;
            }
        }
        
        .logo-text span {
            color: var(--primary);
        }
        
        .nav-menu {
            display: flex;
        }
        
        .nav-menu li {
            margin-left: 30px;
        }
        
        .nav-menu a {
            font-weight: 500;
            color: var(--dark);
            position: relative;
            padding: 5px 0;
        }
        
        .nav-menu a:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--accent);
            transition: width 0.3s ease;
        }
        
        .nav-menu a:hover:after,
        .nav-menu a.active:after {
            width: 100%;
        }
        
        .nav-menu a:hover {
            color: var(--primary);
        }
        
        /* 修改电话链接样式 - 增加背景长度 */
        .phone-link {
            display: flex;
            align-items: center;
            color: var(--primary);
            font-weight: 600;
            font-size: 1rem;
            background-color: rgba(0, 102, 204, 0.05);
            padding: 12px 25px; /* 增加左右padding，使背景更长 */
            border-radius: 30px;
            min-width: 180px; /* 设置最小宽度 */
            justify-content: center;
            white-space: nowrap; /* 防止文字换行 */
        }
        
        .phone-link i {
            margin-right: 10px;
            font-size: 1.1rem;
        }
        
        .phone-link:hover {
            background-color: rgba(0, 102, 204, 0.1);
            color: var(--primary);
        }
        
        .mobile-toggle {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark);
        }
        
        /* ========== 页脚 ========== */
        .footer {
            background-color: var(--dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 70px 0 30px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footer-logo {
            margin-bottom: 20px;
        }
        
        .footer-logo .logo-text {
            color: white;
        }
        
        .footer-about p {
            margin-bottom: 20px;
            line-height: 1.8;
            font-size: 0.95rem;
        }
        
        .social-links {
            display: flex;
        }
        
        .social-links a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, 0.1);
            margin-right: 10px;
            transition: var(--transition);
        }
        
        .social-links a:hover {
            background-color: var(--primary);
            transform: translateY(-3px);
        }
        
        .footer-heading {
            color: white;
            font-size: 1.2rem;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 10px;
        }
        
        .footer-heading:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background-color: var(--accent);
        }
        
        .footer-links li {
            margin-bottom: 12px;
        }
        
        .footer-links a {
            transition: var(--transition);
            font-size: 0.95rem;
        }
        
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        
        .contact-info li {
            display: flex;
            align-items: flex-start;
            margin-bottom: 15px;
        }
        
        .contact-info i {
            color: var(--secondary);
            margin-right: 10px;
            margin-top: 5px;
            font-size: 0.9rem;
        }
        
        .qr-code {
            text-align: center;
        }
        
        .qr-code img {
            width: 120px;
            height: 120px;
            margin: 0 auto 10px;
            border-radius: var(--border-radius);
            background-color: white;
            padding: 8px;
        }
        
        .qr-code p {
            font-size: 0.85rem;
        }
        
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 30px;
            text-align: center;
        }
        
        .copyright {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
        }