/* 全局样式重置和基础变量 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #165DFF;
  --primary-dark: #0e47cd;
  --secondary-color: #36CBCB;
  --accent-color: #f8f9fa;
  --text-color: #333;
  --light-text: #6c757d;
  --border-color: #dee2e6;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --white: #fff;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
  --border-radius: 8px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--white);
  overflow-x: hidden;
}

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

/* 导航栏样式 */
header {
  background-color: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: var(--transition);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
  position: relative;
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition);
}

.navbar-brand:hover {
  color: var(--primary-dark);
}

.navbar-nav {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav-item {
  position: relative;
}

.nav-link {
  color: var(--text-color);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  padding: 0.5rem 0;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: width 0.3s ease;
}

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

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

.nav-actions {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.nav-btn {
  padding: 0.5rem 1rem;
  background-color: var(--primary-color);
  color: var(--white);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: var(--transition);
  text-decoration: none;
  display: inline-block;
}

.nav-btn:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--primary-color);
  padding: 0.5rem;
}

/* 英雄区域样式 */
.hero {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: var(--white);
  padding: 150px 0 100px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.1)" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,112C672,96,768,96,864,112C960,128,1056,160,1152,165.3C1248,171,1344,149,1392,138.7L1440,128L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
  background-size: cover;
  opacity: 0.3;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  font-weight: 700;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero p {
  font-size: 1.3rem;
  margin-bottom: 2rem;
  opacity: 0.95;
}

.hero-btns {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* 按钮样式 */
.btn {
  padding: 0.75rem 2rem;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  display: inline-block;
  transition: var(--transition);
  border: 2px solid transparent;
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
  border-color: var(--primary-dark);
}

.btn-outline {
  background-color: transparent;
  color: var(--white);
  border-color: var(--white);
}

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

.hero .btn-primary {
  background-color: rgba(255, 255, 255, 0.2);
  color: var(--white);
  border-color: var(--white);
}

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

/* 通用区域样式 */
.section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 50px;
  position: relative;
}

.section-title h2 {
  font-size: 2.2rem;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.section-title p {
  color: var(--light-text);
  max-width: 700px;
  margin: 0 auto;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background-color: var(--secondary-color);
  margin: 20px auto 0;
}

/* 卡片样式 */
.card {
  background-color: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: 30px;
  margin-bottom: 30px;
  transition: var(--transition);
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
  border-color: rgba(22, 93, 255, 0.1);
}

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

.card-icon {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 20px;
  display: block;
}

.card-title {
  font-size: 1.5rem;
  margin-bottom: 15px;
  color: var(--primary-color);
  font-weight: 600;
}

.card-text {
  color: var(--light-text);
  line-height: 1.7;
}

/* 业务场景样式 */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 30px;
}

.service-item {
  background-color: var(--white);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 25px;
  transition: var(--transition);
}

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

.service-icon {
  font-size: 2rem;
  color: var(--secondary-color);
  margin-bottom: 20px;
}

.service-title {
  font-size: 1.3rem;
  margin-bottom: 15px;
  color: var(--primary-color);
}

/* 流程步骤样式 */
.process-steps {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  position: relative;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 10%;
  right: 10%;
  height: 2px;
  background-color: var(--border-color);
  z-index: 1;
  display: none;
}

.process-step {
  flex: 1;
  min-width: 150px;
  text-align: center;
  position: relative;
  z-index: 2;
  margin-bottom: 30px;
}

.step-number {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 50px;
  height: 50px;
  background-color: var(--primary-color);
  color: var(--white);
  border-radius: 50%;
  font-weight: bold;
  margin-bottom: 20px;
  font-size: 1.2rem;
}

.step-title {
  font-weight: 500;
  margin-bottom: 10px;
}

/* 资质证书样式 */
.certifications {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 20px;
}

.cert-card {
  flex: 1;
  min-width: 250px;
  text-align: center;
}

.cert-icon {
  font-size: 3rem;
  color: var(--secondary-color);
  margin-bottom: 20px;
}

/* 资质证书图片样式 */
.cert-image {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cert-image:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* 图片放大模态框样式 */
.image-modal-content {
  max-width: 90%;
  max-height: 90vh;
  width: auto;
}

.image-modal-body {
  padding: 2rem;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #f8f9fa;
}

.image-modal-body img {
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

/* 联系方式列表样式 */
.contact-list {
  list-style: none;
  padding: 0;
}

.contact-item {
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.contact-icon {
  color: var(--secondary-color);
  font-weight: 500;
  flex-shrink: 0;
  width: 20px;
  text-align: center;
}

.contact-label {
  width: 80px;
  text-align: justify;
  text-align-last: justify;
  flex-shrink: 0;
  font-weight: 500;
}

.contact-item:last-child {
  margin-bottom: 0;
}

/* 页脚中的联系方式样式（无图标版本） */
footer .contact-list .contact-item {
  margin-bottom: 12px;
}

footer .contact-list .contact-item:last-child {
  margin-bottom: 0;
}

/* 表单样式 */
.form-group {
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.form-label {
  display: block;
  margin-bottom: 0;
  font-weight: 500;
  width: 80px;
  text-align: justify;
  text-align-last: justify;
  flex-shrink: 0;
}

.form-control {
  flex: 1;
  padding: 12px 15px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 1rem;
  transition: var(--transition);
}

/* textarea需要特殊处理，让它独占一行 */
.form-group-textarea {
  flex-direction: column;
  align-items: flex-start;
}

.form-group-textarea .form-label {
  width: 100%;
  margin-bottom: 8px;
  text-align: left;
  text-align-last: left;
}

.form-group-textarea .form-control {
  width: 100%;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(22, 93, 255, 0.1);
}

/* 模态框样式 */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  justify-content: center;
  align-items: center;
  overflow-y: auto;
}

.modal-content {
  background-color: var(--white);
  border-radius: 8px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
  width: 90%;
  max-width: 600px;
  max-height: 90vh;
  overflow: hidden;
  animation: modalFadeIn 0.3s ease-out;
  display: flex;
  flex-direction: column;
}

@keyframes modalFadeIn {
  from {
    opacity: 0;
    transform: translateY(-20px) scale(0.95);
  }

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

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--primary-color);
  color: var(--white);
}

.modal-header h2 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background-color 0.2s ease;
}

.modal-close:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

.modal-body {
  padding: 2rem;
  overflow-y: auto;
  flex-grow: 1;
  max-height: calc(90vh - 120px);
}

/* 页脚样式 */
footer {
  background-color: var(--primary-color);
  color: var(--white);
  padding: 60px 0 30px;
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  margin-bottom: 40px;
}

.footer-column {
  flex: 1;
  min-width: 200px;
  margin-bottom: 30px;
}

.footer-column h3 {
  font-size: 1.3rem;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.footer-column h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background-color: var(--secondary-color);
}

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

.footer-column ul li {
  margin-bottom: 10px;
}

.footer-column a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: var(--transition);
}

.footer-column a:hover {
  color: var(--white);
  padding-left: 5px;
}

.copyright {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.7);
}

/* 响应式设计 */
@media (max-width: 992px) {
  .hero h1 {
    font-size: 3rem;
  }

  .menu-toggle {
    display: block;
  }

  .navbar-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: white;
    flex-direction: column;
    padding: 1rem 0;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    gap: 0;
  }

  .navbar-nav.active {
    display: flex;
  }

  .nav-item {
    width: 100%;
    text-align: center;
    padding: 0.5rem 0;
  }

  .nav-link {
    display: block;
    padding: 0.75rem 1rem;
  }

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

  .nav-actions {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .nav-btn {
    font-size: 0.85rem;
    padding: 0.4rem 0.8rem;
  }

  .services-grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  }
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }

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

  .section-title h2 {
    font-size: 1.8rem;
  }

  .process-steps {
    flex-direction: column;
  }

  .footer-content {
    flex-direction: column;
  }
}

@media (max-width: 576px) {
  .hero h1 {
    font-size: 2rem;
  }

  .hero {
    padding: 120px 0 80px;
  }

  .btn {
    padding: 0.6rem 1.5rem;
    font-size: 0.9rem;
  }

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