@charset "UTF-8";

/*!
 * animate.css -http://daneden.me/animate
 * Version - 3.5.2
 * Licensed under the MIT license - http://opensource.org/licenses/MIT
 *
 * Copyright (c) 2017 Daniel Eden
 */

        :root {
            --primary-color: #0070f3;
            --secondary-color: #f8fafc;
            --text-primary: #1a202c;
            --text-secondary: #64748b;
            --text-muted: #94a3b8;
            --border-color: #e2e8f0;
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
            --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
            line-height: 1.6;
            color: var(--text-primary);
            background-color: #ffffff;
            overflow-x: hidden;
        }

        /* 加载动画 */
        .loader {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 9999;
            transition: opacity 0.5s ease;
        }

        .loader.fade-out {
            opacity: 0;
            pointer-events: none;
        }

        .loader-content {
            text-align: center;
        }

        .loader-spinner {
            width: 60px;
            height: 60px;
            border: 3px solid var(--border-color);
            border-top: 3px solid var(--primary-color);
            border-radius: 50%;
            animation: spin 1s linear infinite;
            margin: 0 auto 1rem;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        /* 导航栏 */
        .navbar {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.1);
            padding: 1rem 0;
            z-index: 1000;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .navbar.scrolled {
            background: rgba(255, 255, 255, 0.98);
            box-shadow: var(--shadow-lg);
            border-bottom: 1px solid var(--border-color);
        }

        .nav-container {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 2rem;
        }

        .logo {
            font-size: 1.75rem;
            font-weight: 700;
            color: #455473;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--gradient-primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1rem;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 3rem;
            align-items: center;
        }

        .nav-menu a {
            text-decoration: none;
            color: #171d27;
            font-weight: 500;
            font-size: 1.05rem;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            padding: -0.5rem 0;
        }

        .nav-menu a:hover {
            color: var(--primary-color);
            margin-top: 20px;
        }

        .nav-menu a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: 1;
            left: 0;
            margin-top: 28px;
			
            background: var(--primary-color);
            transition: width 0.5s cubic-bezier(0.6, 0, 0.2, 1);
        }

        .nav-menu a:hover::after {
            width: 100%;
        }

        .nav-cta {
            background: var(--primary-color);
            color: white !important;
            padding: 0.4rem 1.5rem;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .nav-cta:hover {
            transform: translateY(-25px);
            box-shadow: var(--shadow-lg);
            background: #0056b3;
        }

        .nav-cta::after {
            display: none;
        }

        /* 移动端菜单 */
        .mobile-menu-btn {
            display: none;
            flex-direction: column;
            cursor: pointer;
            padding: 0.5rem;
            border-radius: 8px;
            transition: background-color 0.3s ease;
        }

        .mobile-menu-btn:hover {
            background-color: var(--secondary-color);
        }

        .mobile-menu-btn span {
            width: 24px;
            height: 2px;
            background: var(--text-primary);
            margin: 3px 0;
            transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            border-radius: 2px;
        }

        /* 英雄区域 */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            position: relative;
            background: linear-gradient(135deg, #82abd3 0%, #ffffff 10%, #f1f5f9 100%);
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at 20% 50%, rgba(0, 112, 243, 0.05) 0%, transparent 50%),
                        radial-gradient(circle at 80% 20%, rgba(118, 75, 162, 0.05) 0%, transparent 50%);
            pointer-events: none;
        }

        .hero-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 2rem;
            position: relative;
            z-index: 2;
        }

        .hero-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem 1rem;
            background: rgba(0, 112, 243, 0.1);
            color: var(--primary-color);
            border-radius: 50px;
            font-size: 0.875rem;
            font-weight: 500;
            margin-bottom: 2rem;
            opacity: 0;
            animation: slideUp 1s ease forwards 0.2s;
        }

        .hero h1 {
            font-size: clamp(3rem, 4vw, 4rem);
            font-weight: 700;
            line-height: 1.0;
            margin-bottom: 0.5rem;
            background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-color) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            opacity: 0;
            animation: slideUp 1s ease forwards 0.4s;
        }

        .hero p {
            font-size: 1.25rem;
            color: var(--text-secondary);
            margin-bottom: 3rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            opacity: 0;
            animation: slideUp 1s ease forwards 0.6s;
        }

        .hero-actions {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
            opacity: 0;
            animation: slideUp 1s ease forwards 0.8s;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 1rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            cursor: pointer;
            border: none;
            font-size: 1rem;
        }

        .btn-primary {
            background: var(--primary-color);
            color: white;
            box-shadow: var(--shadow-md);
        }

        .btn-primary:hover {
            background: #0056b3;
            transform: translateY(-3px);
            box-shadow: var(--shadow-xl);
        }

        .btn-secondary {
            background: white;
            color: var(--text-primary);
            border: 2px solid var(--border-color);
        }

        .btn-secondary:hover {
            border-color: var(--primary-color);
            color: var(--primary-color);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        @keyframes slideUp {
            from {
                opacity: 0;
                transform: translateY(40px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* 浮动元素 */
        .floating-elements {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 1;
        }

        .floating-element {
            position: absolute;
            width: 60px;
            height: 60px;
            background: rgba(0, 112, 243, 0.1);
            border-radius: 50%;
            animation: float 6s ease-in-out infinite;
        }

        .floating-element:nth-child(1) {
            top: 20%;
            left: 10%;
            animation-delay: 0s;
        }

        .floating-element:nth-child(2) {
            top: 60%;
            right: 10%;
            animation-delay: 2s;
        }

        .floating-element:nth-child(3) {
            bottom: 20%;
            left: 20%;
            animation-delay: 4s;
        }

        @keyframes float {
            0%, 100% { transform: translateY(0px); }
            50% { transform: translateY(-20px); }
        }

        /* 特性展示 */
        .features {
            padding: 3rem 0;
            background: white;
        }

        .features-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        .section-header {
            text-align: center;
            margin-bottom: 5rem;
        }

        .section-subtitle {
            color: var(--primary-color);
            font-weight: 600;
            font-size: 0.875rem;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            margin-bottom: 1rem;
        }

        .section-title {
            font-size: clamp(2.5rem, 5vw, 3.5rem);
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
            line-height: 1.2;
        }

        .section-description {
            font-size: 1.125rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 3rem;
            margin-top: 4rem;
        }

        .feature-card {
            background: white;
            padding: 3rem;
            border-radius: 24px;
            border: 1px solid var(--border-color);
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, transparent 0%, rgba(0, 112, 243, 0.02) 100%);
            opacity: 0;
            transition: opacity 0.4s ease;
        }

        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-xl);
            border-color: rgba(0, 112, 243, 0.2);
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-icon {
            width: 80px;
            height: 80px;
            background: var(--gradient-primary);
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: white;
            margin-bottom: 2rem;
            position: relative;
            z-index: 2;
        }

        .feature-card h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 1rem;
            position: relative;
            z-index: 2;
        }

        .feature-card p {
            color: var(--text-secondary);
            line-height: 1.7;
            font-size: 1rem;
            position: relative;
            z-index: 2;
        }

        /* 统计数据 */
        .stats {
            padding: 6rem 0;
            background: #e4eef7;
        }

        .stats-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
        }

        .stat-card {
            text-align: center;
            padding: 2rem;
            background: white;
            border-radius: 20px;
            box-shadow: var(--shadow-md);
            transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .stat-card:hover {
            transform: translateY(-5px);
        }

        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--primary-color);
            display: block;
            margin-bottom: 0.5rem;
        }

        .stat-label {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 1rem;
        }

        /* 服务 */
        .services {
            padding: 8rem 0;
            background: white;
        }

        .services-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
            gap: 2.5rem;
            margin-top: 5rem;
        }

        .service-card {
            background: white;
            padding: 3rem;
            border-radius: 24px;
            border: 1px solid var(--border-color);
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            overflow: hidden;
            group: hover;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(0, 112, 243, 0.05), transparent);
            transition: left 0.6s ease;
        }

        .service-card:hover::before {
            left: 100%;
        }

        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-xl);
            border-color: rgba(0, 112, 243, 0.2);
        }

        .service-header {
            display: flex;
            align-items: flex-start;
            gap: 1.5rem;
            margin-bottom: 2rem;
        }

        .service-icon {
            width: 70px;
            height: 70px;
            background: var(--gradient-primary);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.75rem;
            color: white;
            flex-shrink: 0;
        }

        .service-content h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
        }

        .service-content .service-subtitle {
            color: var(--text-muted);
            font-size: 0.875rem;
            font-weight: 500;
        }

        .service-card p {
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 2rem;
        }

        .service-features {
            list-style: none;
        }

        .service-features li {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            color: var(--text-secondary);
            margin-bottom: 0.75rem;
            font-size: 0.95rem;
        }

        .service-features li::before {
            content: '✓';
            color: var(--primary-color);
            font-weight: 600;
            font-size: 1rem;
        }

        /* 团队 */
        .team {
            padding: 8rem 0;
            background: var(--secondary-color);
        }

        .team-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        .team-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2.5rem;
            margin-top: 5rem;
        }

        .team-card {
            background: white;
            border-radius: 24px;
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .team-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-xl);
        }

        .team-avatar {
            width: 100%;
            height: 280px;
            background: var(--gradient-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 4rem;
            color: white;
            position: relative;
            overflow: hidden;
        }

        .team-avatar::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, transparent 0%, rgba(0, 0, 0, 0.1) 100%);
        }

        .team-info {
            padding: 2rem;
            text-align: center;
        }

        .team-info h4 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
        }

        .team-role {
            color: var(--primary-color);
            font-weight: 500;
            margin-bottom: 1rem;
        }

        .team-bio {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 1.5rem;
        }

        .team-social {
            display: flex;
            justify-content: center;
            gap: 1rem;
        }

        .team-social a {
            width: 40px;
            height: 40px;
            background: var(--secondary-color);
            color: var(--text-secondary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .team-social a:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-2px);
        }

        /* 联系我们 */
        .contact {
            padding: 8rem 0;
            background: white;
        }

        .contact-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        .contact-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 5rem;
            align-items: start;
            margin-top: 5rem;
        }

        .contact-info {
            space-y: 3rem;
        }

        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 1.5rem;
            margin-bottom: 3rem;
        }

        .contact-icon {
            width: 60px;
            height: 60px;
            background: var(--gradient-primary);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: white;
            flex-shrink: 0;
        }

        .contact-details h4 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
        }

        .contact-details p {
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .contact-form {
            background: var(--secondary-color);
            padding: 3rem;
            border-radius: 24px;
            border: 1px solid var(--border-color);
        }

        .form-group {
            margin-bottom: 2rem;
        }

        .form-group label {
            display: block;
            font-weight: 500;
            color: var(--text-primary);
            margin-bottom: 0.75rem;
            font-size: 0.95rem;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 1rem 1.25rem;
            border: 2px solid var(--border-color);
            border-radius: 12px;
            background: white;
            color: var(--text-primary);
            font-family: inherit;
            font-size: 1rem;
            transition: all 0.3s ease;
        }

        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(0, 112, 243, 0.1);
        }

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

        /* 推广区域 */
        .promotion-section {
            padding: 4rem 0;
            background: linear-gradient(135deg, #667eea 100%, #764ba2 0%);
            position: relative;
            overflow: hidden;
        }

        .promotion-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.1);
            backdrop-filter: blur(10px);
        }

        .promotion-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 2rem;
            position: relative;
            z-index: 2;
        }

        .promotion-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
            gap: 3rem;
        }

        .promotion-item {
            display: flex;
            align-items: center;
            gap: 2rem;
            background: rgba(255, 255, 255, 0.15);
            padding: 2.5rem;
            border-radius: 20px;
            backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .promotion-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
            background: rgba(255, 255, 255, 0.2);
        }

        .promotion-icon {
            width: 80px;
            height: 80px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: white;
            flex-shrink: 0;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.3);
        }

        .promotion-text {
            flex: 1;
        }

        .promotion-text h4 {
            font-size: 1.5rem;
            font-weight: 600;
            color: white;
            margin-bottom: 0.5rem;
        }

        .promotion-text p {
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 1rem;
            font-size: 1rem;
        }

        .promotion-link {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            color: white;
            text-decoration: none;
            font-weight: 500;
            padding: 0.75rem 1.5rem;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 50px;
            border: 1px solid rgba(255, 255, 255, 0.3);
            transition: all 0.3s ease;
            backdrop-filter: blur(10px);
        }

        .promotion-link:hover {
            background: rgba(255, 255, 255, 0.3);
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
        }

        .promotion-link i {
            font-size: 0.9rem;
        }

        /* 页脚 */
        .footer {
            background: var(--text-primary);
            color: white;
            padding: 4rem 0 2rem;
        }

        .footer-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        .footer-content {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 3rem;
            margin-bottom: 3rem;
        }

        .footer-brand h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }

        .footer-brand p {
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 2rem;
        }

        .footer-social {
            display: flex;
            gap: 1rem;
        }

        .footer-social a {
            width: 44px;
            height: 44px;
            background: rgba(255, 255, 255, 0.1);
            color: white;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .footer-social a:hover {
            background: var(--primary-color);
            transform: translateY(-2px);
        }

        .footer-section h4 {
            font-size: 1.125rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
        }

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

        .footer-section ul li {
            margin-bottom: 0.75rem;
        }

        .footer-section ul li a {
            color: var(--text-muted);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer-section ul li a:hover {
            color: white;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .footer-bottom p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        .footer-links {
            display: flex;
            gap: 2rem;
        }

        .footer-links a {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 0.95rem;
            transition: color 0.3s ease;
        }

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

        /* 页脚 */
        .footerr {
            background: var(--text-primary);
            color: white;
            padding: 4rem 0 2rem;
        }

        .footerr-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        .footerr-content {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 3rem;
            margin-bottom: 3rem;
        }

        .footerr-brand h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }

        .footerr-brand p {
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 2rem;
        }

        .footerr-social {
            display: flex;
            gap: 1rem;
        }

        .footerr-social a {
            width: 44px;
            height: 44px;
            background: rgba(255, 255, 255, 0.1);
            color: white;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .footerr-social a:hover {
            background: var(--primary-color);
            transform: translateY(-2px);
        }

        .footerr-section h4 {
            font-size: 1.125rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
        }

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

        .footerr-section ul li {
            margin-bottom: 0.75rem;
        }

        .footerr-section ul li a {
            color: var(--text-muted);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footerr-section ul li a:hover {
            color: white;
        }

        .footerr-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .footerr-bottom p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        .footerr-links {
            display: flex;
            gap: 2rem;
        }

        .footerr-links a {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 0.95rem;
            transition: color 0.3s ease;
        }

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


        /* 滚动动画 */
        .scroll-reveal {
            opacity: 0;
            transform: translateY(60px);
            transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .scroll-reveal.revealed {
            opacity: 1;
            transform: translateY(0);
        }

        /* 回到顶部按钮 */
        .back-to-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            width: 50px;
            height: 50px;
            background: var(--primary-color);
            color: white;
            border: none;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: var(--shadow-lg);
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            z-index: 1000;
        }

        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
        }

        .back-to-top:hover {
            background: #0056b3;
            transform: translateY(-3px);
            box-shadow: var(--shadow-xl);
        }

        /* 响应式设计 */
        @media (max-width: 1024px) {
            .contact-content {
                grid-template-columns: 1fr;
                gap: 3rem;
            }

            .footer-content {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
            }

            .mobile-menu-btn {
                display: flex;
            }

            .hero-actions {
                flex-direction: column;
                align-items: center;
            }

            .btn {
                width: 100%;
                max-width: 300px;
                justify-content: center;
            }

            .features-grid,
            .services-grid {
                grid-template-columns: 1fr;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .team-grid {
                grid-template-columns: 1fr;
                max-width: 400px;
                margin: 3rem auto 0;
            }

            .promotion-content {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .promotion-item {
                flex-direction: column;
                text-align: center;
                gap: 1.5rem;
                padding: 2rem;
            }

            .footer-content {
                grid-template-columns: 1fr;
                text-align: center;
            }

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

            .back-to-top {
                bottom: 1rem;
                right: 1rem;
            }
        }

        @media (max-width: 480px) {
            .nav-container,
            .hero-container,
            .features-container,
            .stats-container,
            .services-container,
            .team-container,
            .contact-container,
            .footer-container,
            .promotion-container {
                padding: 0 1rem;
            }

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

            .promotion-content {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }

            .promotion-item {
                padding: 1.5rem;
            }

            .promotion-link {
                font-size: 0.9rem;
                padding: 0.6rem 1.2rem;
            }
        }