/* ==================== 全局样式 ==================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #2c7da0;
  --primary-dark: #1f5e7a;
  --primary-light: #61a5c2;
  --secondary-color: #f4a261;
  --text-color: #333;
  --text-light: #666;
  --bg-light: #f8f9fa;
  --bg-dark: #e9ecef;
  --white: #fff;
  --shadow: 0 5px 20px rgba(0,0,0,0.08);
  --shadow-hover: 0 10px 30px rgba(0,0,0,0.12);
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

body {
  font-family: 'Segoe UI', 'Microsoft YaHei', 'PingFang SC', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--text-color);
  line-height: 1.6;
  background: var(--white);
}

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

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
}

a {
  text-decoration: none;
  color: var(--text-color);
  transition: var(--transition);
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.section {
  padding: 60px 0;
}

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

.section-title h2 {
  font-size: 32px;
  color: var(--text-color);
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
  padding-bottom: 15px;
}

.section-title h2:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--primary-color);
  border-radius: 2px;
}

.section-title p {
  color: var(--text-light);
  font-size: 16px;
}

.btn {
  display: inline-block;
  padding: 12px 30px;
  border-radius: 30px;
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

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

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

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

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

/* ==================== 头部导航 ==================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--white);
  box-shadow: 0 2px 15px rgba(0,0,0,0.05);
  z-index: 1000;
  transition: var(--transition);
}

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

.logo h1 {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary-color);
}

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

.nav-menu a {
  font-weight: 500;
  position: relative;
  padding: 5px 0;
}

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

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

.nav-menu a.active {
  color: var(--primary-color);
}

.tel-info {
  display: flex;
  align-items: center;
  gap: 15px;
}

.tel-icon {
  background: var(--primary-color);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 18px;
}

.tel-number {
  font-weight: 600;
  font-size: 18px;
  color: var(--primary-color);
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
}

.mobile-menu-btn span {
  width: 25px;
  height: 3px;
  background: var(--text-color);
  border-radius: 2px;
  transition: var(--transition);
}

@media (max-width: 992px) {
  .mobile-menu-btn {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 70%;
    height: calc(100vh - 70px);
    background: var(--white);
    flex-direction: column;
    padding: 30px 20px;
    gap: 15px;
    box-shadow: 2px 0 10px rgba(0,0,0,0.1);
    transition: var(--transition);
    z-index: 999;
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .tel-info {
    display: none;
  }
}

/* ==================== Banner 轮播 ==================== */
.banner {
  margin-top: 70px;
  position: relative;
  height: 500px;
  overflow: hidden;
}

.banner-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.banner-slide.active {
  opacity: 1;
}

.banner-content {
  position: absolute;
  bottom: 30%;
  left: 0;
  right: 0;
  text-align: center;
  color: var(--white);
  text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.banner-content h2 {
  font-size: 48px;
  margin-bottom: 20px;
}

.banner-content p {
  font-size: 20px;
  margin-bottom: 30px;
}

@media (max-width: 768px) {
  .banner {
    height: 350px;
  }
  
  .banner-content h2 {
    font-size: 28px;
  }
  
  .banner-content p {
    font-size: 16px;
  }
}

/* ==================== 业务服务 ==================== */
.services {
  background: var(--bg-light);
}

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

.service-card {
  background: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
  text-align: center;
  padding: 30px 20px;
}

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

.service-card h3 {
  font-size: 20px;
  margin-bottom: 15px;
}

.service-card p {
  color: var(--text-light);
  margin-bottom: 20px;
  line-height: 1.5;
}

.service-link {
  color: var(--primary-color);
  font-weight: 500;
}

.service-image img {
  width: 100%;
  /* max-width: 300px; */
  height: auto;
  border-radius: 8px;
  margin-bottom: 15px;
  transition: transform 0.3s ease;
}

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

/* ==================== 关于我们 ==================== */
.about {
  background: var(--white);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.about-image img {
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  width: 100%;
  max-width: 500px;
}

.about-text h3 {
  font-size: 28px;
  margin-bottom: 20px;
  color: var(--primary-color);
}

.about-text p {
  margin-bottom: 20px;
  color: var(--text-light);
}

#aboutBusinessScope {
  font-weight: 500;
  line-height: 1.8;
  text-indent: 2em;
}

.about-desc {
  font-style: italic;
  color: var(--primary-color) !important;
}

.about-features {
  display: flex;
  gap: 30px;
  margin: 30px 0;
}

.feature {
  text-align: center;
}

.feature .number {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary-color);
}

.feature .label {
  color: var(--text-light);
  font-size: 14px;
}

.about-btn-wrapper {
  text-align: left;
  margin-top: 10px;
}

@media (max-width: 768px) {
  .about-content {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  
  .about-features {
    justify-content: center;
  }
  
  .about-btn-wrapper {
    text-align: center;
  }
  
  .about-text h3,
  .about-desc {
    text-align: center;
  }
  
  #aboutBusinessScope {
    text-align: justify;
  }
}

/* ==================== 新闻中心 ==================== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 30px;
}

.news-card {
  background: var(--white);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.news-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.news-content {
  padding: 20px;
}

.news-date {
  color: var(--primary-color);
  font-size: 14px;
  margin-bottom: 10px;
}

.news-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
}

.news-title a {
  color: var(--text-color);
}

.news-title a:hover {
  color: var(--primary-color);
}

.news-summary {
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.5;
}

@media (max-width: 768px) {
  .news-grid {
    grid-template-columns: 1fr;
  }
}

/* ==================== 页脚 ==================== */
.footer {
  background: #1a1a2e;
  color: #aaa;
  padding: 50px 0 20px;
}

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

.footer-col h4 {
  color: var(--white);
  font-size: 18px;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--primary-color);
}

.footer-col p {
  margin-bottom: 10px;
}

.footer-col a {
  color: #aaa;
}

.footer-col a:hover {
  color: var(--primary-color);
}

.qrcode {
  width: 100px;
  height: 100px;
  margin-top: 10px;
  border-radius: 8px;
  overflow: hidden;
}

.qrcode img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 12px;
}

.footer-links {
  margin-top: 10px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-links a {
  color: #aaa;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

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

.footer-links img {
  height: 16px;
  vertical-align: middle;
}

/* 移动端页脚样式 */
@media (max-width: 768px) {
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 30px;
  }
  
  .footer-col h4:after {
    left: 50%;
    transform: translateX(-50%);
  }
  
  .footer-col p {
    text-align: center;
  }
  
  .qrcode {
    margin: 10px auto;
  }
  
  .footer-links {
    gap: 15px;
  }
}

/* ==================== 联系页面 ==================== */
.contact {
  padding: 80px 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
}

.contact-info {
  background: var(--bg-light);
  padding: 30px;
  border-radius: var(--border-radius);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 25px;
}

.contact-icon {
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 20px;
}

.contact-text h4 {
  font-size: 16px;
  margin-bottom: 5px;
}

.contact-text p {
  color: var(--text-light);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 12px 15px;
  margin-bottom: 15px;
  border: 1px solid #ddd;
  border-radius: var(--border-radius);
  font-family: inherit;
}

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

.map {
  margin-top: 40px;
  border-radius: var(--border-radius);
  overflow: hidden;
}

@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}

/* ==================== 页面头部 ==================== */
.page-header {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: var(--white);
  padding: 60px 0;
  text-align: center;
  margin-top: 70px;
}

.page-header h1 {
  font-size: 36px;
  margin-bottom: 10px;
}

.breadcrumb {
  margin-top: 15px;
}

.breadcrumb a {
  color: rgba(255,255,255,0.8);
}

.breadcrumb a:hover {
  color: var(--white);
}

/* ==================== 返回顶部 ==================== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 45px;
  height: 45px;
  background: var(--primary-color);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 99;
}

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

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
}

@media (max-width: 768px) {
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
  }
}