:root {
     --primary: #000764;
     --primary-dark: #4f46e5;
     --secondary: #002c74;
     --accent: #f97316;
     --success: #10b981;
     --warning: #f59e0b;
     --danger: #ef4444;
     --dark: #1e293b;
     --darker: #0f172a;
     --light: #f8fafc;
     --gray: #64748b;
     --gray-light: #e2e8f0;
     --radius: 8px;
     --transition: all 0.3s ease;
 }


 * {
     margin: 0;
     padding: 0;
     box-sizing: border-box;
     font-family: 'Inter', 'Microsoft YaHei', sans-serif;
 }

 body {
     color: var(--dark);
     line-height: 1.6;
     overflow-x: hidden;
     background-color: var(--light);
 }

 .container {
     width: 100%;
     max-width: 1200px;
     margin: 0 auto;
     padding: 0 20px;
 }

 section {
     padding: 80px 0;
     position: relative;
 }

 /* 导航栏样式 */
 header {
     background-color: white;
     box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
     position: fixed;
     width: 100%;
     top: 0;
     z-index: 1000;
 }

 nav {
     display: flex;
     justify-content: space-between;
     align-items: center;
     padding: 15px 0;
 }

 .logo {
     display: flex;
     align-items: center;
     gap: 10px;
 }

 .logo h1 {
     font-size: 24px;
     font-weight: 800;
     background: linear-gradient(135deg, var(--primary), var(--secondary));
     -webkit-background-clip: text;
     background-clip: text;
     -webkit-text-fill-color: transparent;
 }

 .logo-icon {
     color: var(--primary);
     font-size: 28px;
 }

 .nav-links {
     display: flex;
     list-style: none;
     gap: 30px;
 }

 .nav-links li {
     position: relative;
 }

 .nav-links a {
     text-decoration: none;
     color: var(--dark);
     font-weight: 500;
     transition: var(--transition);
     position: relative;
     padding: 8px 0;
 }

 .nav-links a:hover {
     color: var(--primary);
 }

 .nav-links a.active {
     color: var(--primary);
     font-weight: 600;
 }

 .contact-btn {
     background: linear-gradient(135deg, var(--primary), var(--secondary));
     color: white;
     border: none;
     padding: 12px 24px;
     border-radius: var(--radius);
     cursor: pointer;
     font-weight: 600;
     transition: var(--transition);
 }

 .contact-btn:hover {
     opacity: 0.9;
     transform: translateY(-2px);
 }

 .menu-toggle {
     display: none;
     font-size: 24px;
     cursor: pointer;
     color: var(--dark);
     z-index: 1001;
 }

 /* 英雄区域样式 */
 .hero {
     background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
     color: white;
     padding: 160px 0 100px;
     text-align: center;
     position: relative;
 }

 .hero-content {
     max-width: 900px;
     margin: 0 auto;
     position: relative;
     z-index: 1;
 }

 .hero h2 {
     font-size: 3rem;
     font-weight: 800;
     margin-bottom: 20px;
     opacity: 0;
     transform: translateY(20px);
     animation: fadeInUp 1s ease forwards;
 }

 .hero::before {
     content: '';
     position: absolute;
     top: 0;
     left: 0;
     width: 100%;
     height: 100%;
     background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%23ffffff' fill-opacity='0.05' fill-rule='evenodd'/%3E%3C/svg%3E");
     opacity: 0.5;
 }

 .hero p {
     font-size: 1.2rem;
     margin-bottom: 40px;
     opacity: 0.9;
     opacity: 0;
     transform: translateY(20px);
     animation: fadeInUp 1s ease 0.2s forwards;
 }

 .hero-btns {
     display: flex;
     justify-content: center;
     gap: 20px;
     opacity: 0;
     transform: translateY(20px);
     animation: fadeInUp 1s ease 0.4s forwards;
 }

 .btn {
     padding: 16px 32px;
     border-radius: var(--radius);
     font-weight: 600;
     cursor: pointer;
     transition: var(--transition);
     text-decoration: none;
     display: inline-flex;
     align-items: center;
     justify-content: center;
     gap: 8px;
 }

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

 .btn-primary:hover {
     background-color: transparent;
     color: white;
 }

 .btn-outline {
     background-color: transparent;
     color: white;
     border: 2px solid white;
 }

 .btn-outline:hover {
     background-color: white;
     color: var(--primary);
 }

 /* 服务区域样式 */
 .services {
     background-color: var(--light);
 }

 .section-title {
     text-align: center;
     margin-bottom: 60px;
 }

 .section-title h2 {
     font-size: 2.5rem;
     font-weight: 800;
     color: var(--darker);
     margin-bottom: 15px;
 }

 .section-title p {
     color: var(--gray);
     max-width: 600px;
     margin: 0 auto;
     font-size: 1.1rem;
 }

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

 .service-card {
     background-color: white;
     border-radius: var(--radius);
     padding: 40px 30px;
     text-align: center;
     transition: var(--transition);
     border: 1px solid var(--gray-light);
     opacity: 0;
     transform: translateY(20px);
 }

 .service-card.animate {
     opacity: 1;
     transform: translateY(0);
 }

 .service-card:hover {
     transform: translateY(-5px);
     border-color: var(--primary);
 }

 .service-icon {
     font-size: 50px;
     background: linear-gradient(135deg, var(--primary), var(--secondary));
     -webkit-background-clip: text;
     background-clip: text;
     -webkit-text-fill-color: transparent;
     margin-bottom: 25px;
 }

 .service-card h3 {
     font-size: 1.5rem;
     margin-bottom: 15px;
     color: var(--darker);
 }

 .service-card p {
     color: var(--gray);
 }

 /* 优势展示区域样式 */
 .advantages {
     background-color: white;
 }

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

 .advantage-card {
     text-align: center;
     padding: 40px 30px;
     border-radius: var(--radius);
     background: white;
     transition: var(--transition);
     border: 1px solid var(--gray-light);
     opacity: 0;
     transform: translateY(20px);
 }

 .advantage-card.animate {
     opacity: 1;
     transform: translateY(0);
 }

 .advantage-card:hover {
     border-color: var(--primary);
 }

 .advantage-icon {
     font-size: 60px;
     background: linear-gradient(135deg, var(--primary), var(--secondary));
     -webkit-background-clip: text;
     background-clip: text;
     -webkit-text-fill-color: transparent;
     margin-bottom: 25px;
 }

 .advantage-card h3 {
     font-size: 1.5rem;
     margin-bottom: 15px;
     color: var(--darker);
 }

 .advantage-card p {
     color: var(--gray);
 }

 /* 接单流程样式 */
 .process {
     background-color: var(--light);
 }

 .process-steps {
     display: flex;
     flex-wrap: wrap;
     justify-content: center;
     gap: 20px;
     margin-top: 50px;
 }

 .process-step {
     background: white;
     border-radius: var(--radius);
     padding: 30px 20px;
     width: 180px;
     text-align: center;
     position: relative;
     transition: var(--transition);
     border: 1px solid var(--gray-light);
     opacity: 0;
     transform: translateY(20px);
 }

 .process-step.animate {
     opacity: 1;
     transform: translateY(0);
 }

 .process-step:hover {
     border-color: var(--primary);
 }

 .step-number {
     width: 50px;
     height: 50px;
     background: linear-gradient(135deg, var(--primary), var(--secondary));
     color: white;
     border-radius: 50%;
     display: flex;
     align-items: center;
     justify-content: center;
     margin: 0 auto 15px;
     font-weight: bold;
     font-size: 1.2rem;
 }

 .step-title {
     font-weight: 600;
     margin-bottom: 10px;
     color: var(--darker);
     font-size: 1.1rem;
 }

 .step-desc {
     font-size: 0.9rem;
     color: var(--gray);
 }

 /* 开发团队样式 */
 .team {
     background-color: white;
 }

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

 .team-card {
     background: white;
     border-radius: var(--radius);
     overflow: hidden;
     transition: var(--transition);
     border: 1px solid var(--gray-light);
     opacity: 0;
     transform: translateY(20px);
 }

 .team-card.animate {
     opacity: 1;
     transform: translateY(0);
 }

 .team-card:hover {
     border-color: var(--primary);
 }

 .team-card-header {
     background: linear-gradient(135deg, var(--primary), var(--secondary));
     padding: 30px 20px;
     text-align: center;
     color: white;
 }

 .team-avatar {
     width: 100px;
     height: 100px;
     border-radius: 50%;
     border: 4px solid rgba(255, 255, 255, 0.3);
     margin: 0 auto;
     display: flex;
     align-items: center;
     justify-content: center;
     font-size: 40px;
     background: rgba(255, 255, 255, 0.2);
     color: white;
 }

 .team-name {
     margin-top: 20px;
     font-size: 1.3rem;
     font-weight: 600;
 }

 .team-role {
     font-size: 0.9rem;
     opacity: 0.9;
     margin-top: 5px;
 }

 .team-card-body {
     padding: 25px;
 }

 .team-desc {
     color: var(--gray);
     font-size: 0.95rem;
     line-height: 1.6;
 }

 .team-skills {
     display: flex;
     flex-wrap: wrap;
     gap: 8px;
     margin-top: 20px;
 }

 .skill-tag {
     background: var(--gray-light);
     color: var(--dark);
     padding: 5px 12px;
     border-radius: 20px;
     font-size: 0.8rem;
 }

 /* 关于我们样式 */
 .about {
     background-color: var(--light);
 }

 .about-content {
     display: flex;
     align-items: center;
     gap: 60px;
 }

 .about-text {
     flex: 1;
     opacity: 0;
     transform: translateX(-20px);
 }

 .about-text.animate {
     opacity: 1;
     transform: translateX(0);
 }

 .about-text h2 {
     font-size: 2.5rem;
     color: var(--darker);
     margin-bottom: 25px;
     font-weight: 800;
 }

 .about-text p {
     margin-bottom: 20px;
     color: var(--gray);
     font-size: 1.1rem;
     line-height: 1.8;
 }

 .about-image {
     flex: 1;
     border-radius: var(--radius);
     overflow: hidden;
     opacity: 0;
     transform: translateX(20px);
 }

 .about-image.animate {
     opacity: 1;
     transform: translateX(0);
 }

 .about-image img {
     width: 100%;
     height: auto;
     display: block;
 }

 /* 联系表单样式 */
 .contact {
     background-color: white;
 }

 .contact-form {
     max-width: 700px;
     margin: 0 auto;
     background-color: var(--light);
     padding: 40px;
     border-radius: var(--radius);
     opacity: 0;
     transform: translateY(20px);
 }

 .contact-form.animate {
     opacity: 1;
     transform: translateY(0);
 }

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

 .form-group label {
     display: block;
     margin-bottom: 8px;
     font-weight: 600;
     color: var(--darker);
 }

 .form-group input,
 .form-group textarea,
 .form-group select {
     width: 100%;
     padding: 15px 20px;
     border: 1px solid var(--gray-light);
     border-radius: var(--radius);
     font-size: 16px;
     transition: var(--transition);
 }

 .form-group input:focus,
 .form-group textarea:focus,
 .form-group select:focus {
     border-color: var(--primary);
     outline: none;
 }

 .form-group textarea {
     min-height: 150px;
     resize: vertical;
 }

 .submit-btn {
     background: linear-gradient(135deg, var(--primary), var(--secondary));
     color: white;
     border: none;
     padding: 16px 32px;
     border-radius: var(--radius);
     cursor: pointer;
     font-size: 16px;
     font-weight: 600;
     transition: var(--transition);
     width: 100%;
 }

 .submit-btn:hover {
     opacity: 0.9;
     transform: translateY(-2px);
 }

 /* 页脚样式 */
 footer {
     background: linear-gradient(135deg, var(--dark) 0%, var(--darker) 100%);
     color: white;
     padding: 60px 0 30px;
 }

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

 .footer-column h3 {
     font-size: 1.5rem;
     margin-bottom: 25px;
     color: white;
     font-weight: 700;
 }

 .footer-column p,
 .footer-column li {
     color: rgba(255, 255, 255, 0.7);
     margin-bottom: 12px;
 }

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

 .footer-column a {
     color: rgba(255, 255, 255, 0.7);
     text-decoration: none;
     transition: var(--transition);
 }

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

 .social-links {
     display: flex;
     gap: 15px;
     margin-top: 20px;
 }

 .social-links a {
     display: inline-flex;
     align-items: center;
     justify-content: center;
     width: 45px;
     height: 45px;
     background-color: rgba(255, 255, 255, 0.1);
     border-radius: 50%;
     transition: var(--transition);
 }

 .social-links a:hover {
     background: linear-gradient(135deg, var(--primary), var(--secondary));
 }

 .copyright {
     text-align: center;
     padding-top: 30px;
     border-top: 1px solid rgba(255, 255, 255, 0.1);
     color: rgba(255, 255, 255, 0.5);
     font-size: 0.9rem;
 }

 .copyright a {
     color: rgba(255, 255, 255, 0.7);
     text-decoration: none;
     transition: var(--transition);
 }

 .copyright a:hover {
     color: white;
 }

 /* 动画 */
 @keyframes fadeInUp {
     from {
         opacity: 0;
         transform: translateY(30px);
     }

     to {
         opacity: 1;
         transform: translateY(0);
     }
 }

 @keyframes fadeInLeft {
     from {
         opacity: 0;
         transform: translateX(-30px);
     }

     to {
         opacity: 1;
         transform: translateX(0);
     }
 }

 @keyframes fadeInRight {
     from {
         opacity: 0;
         transform: translateX(30px);
     }

     to {
         opacity: 1;
         transform: translateX(0);
     }
 }

 /* 响应式设计 */
 @media (max-width: 992px) {
     .about-content {
         flex-direction: column;
     }

     .about-image {
         order: -1;
     }

     .process-step:not(:last-child):after {
         display: none;
     }

     .process-steps {
         gap: 15px;
     }

     .process-step {
         width: 160px;
     }
 }

 @media (max-width: 768px) {
     .nav-links {
         position: fixed;
         top: 0;
         right: -100%;
         width: 280px;
         height: 100vh;
         background: white;
         flex-direction: column;
         padding: 100px 30px 30px;
         box-shadow: -5px 0 30px rgba(0, 0, 0, 0.1);
         transition: right 0.3s ease;
         z-index: 999;
     }

     .nav-links.active {
         right: 0;
     }

     .nav-links li {
         margin: 15px 0;
     }

     .menu-toggle {
         display: block;
     }

     .hero h2 {
         font-size: 2.2rem;
     }

     .hero p {
         font-size: 1.1rem;
     }

     .hero-btns {
         flex-direction: column;
         gap: 15px;
     }

     .section-title h2 {
         font-size: 2rem;
     }

     .process-steps {
         flex-direction: column;
         align-items: center;
     }

     .process-step {
         width: 100%;
         max-width: 300px;
     }

     .contact-form {
         padding: 30px 20px;
     }
 }

 .container {
     position: relative;
 }

 .contact-iframe {
     width: 300px;
     position: absolute;
     display: none;
     z-index: 100;
     height: 400px;
     right: 0;
     top: 75px;
     /* 添加动画相关属性 */
     /* 默认向下偏移20px */
     opacity: 0;
     /* 默认透明 */
     transition: all 0.3s ease;
     transform: translateY(20px);
     /* 添加过渡效果 */

 }

 .contact-btn:hover+.contact-iframe {
     transform: translateY(0);
     /* 向上移动到正常位置 */
     opacity: 1;
     display: block;
     /* 淡入显示 */
 }

 /* 可选：当鼠标悬停在iframe上时保持显示状态 */
 .contact-iframe:hover {

     transform: translateY(0);
     opacity: 1;
     display: block;
 }