body {
  font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--main-text-color);
  background-color: var(--main-bg-color);
  line-height: 1.6;
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

/* 头部导航样式 */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: transparent;
  transition: var(--transition);
}

.header.scrolled {
  background-color: var(--main-bg-color);
  box-shadow: var(--box-shadow);
}
.header.hover{
  background-color: var(--main-bg-color);
  box-shadow: var(--box-shadow);
}
.navbar {
  padding: 15px 0;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.logo img {
  height: 68px;
}

.nav-menu ul {
  display: flex;
  align-items: center;

}

.nav-menu li {
  margin-left: 30px;
  padding: 0 10px;
}

.nav-menu a {
  font-size: 16px;
  font-weight: 500;
  color: var(--second-text-color);
  position: relative;
  padding: 5px 0;
}

.header.scrolled .nav-menu a {
  color: var(--main-text-color);
}

.nav-menu a.active,
.nav-menu a:hover {
  font-weight: 600;
}


.mobile-menu-btn {
  display: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--second-text-color);
}

.header.scrolled .mobile-menu-btn {
  color: var(--main-text-color);
}

/* 英雄区样式 */
.hero-section {
  position: relative;
  height: 600px;
  display: flex;
  align-items: center;
  padding-top: 80px;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 100%;
  background-image: url('../images/banner.png');
  background-size: cover;
  background-position: center;
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 600px;
}

.main-title {
  font-size: 42px;
  font-weight: bold;
  margin-bottom: 20px;
  line-height: 1.3;
  font-family: 'AlimamaShuHeiTi-Bold', sans-serif;
  text-align: center;
}

.subtitle {
  font-size: 18px;
  margin-bottom: 30px;
  line-height: 1.7;
  color: val(--second-text-color);
}

.cta-button {
  margin-top: 20px;
}

/* 按钮样式 */
.btn {
  margin: 0 auto;
  display: block;
  padding: 12px 30px;
  font-size: 16px;
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  border: none;
  width: 145px;
  border-radius: 4px;
  color: #fff !important;
  transition: var(--transition);
}

.btn-primary {
  background-color: var(--accent-color);
  color: var(--light-text-color);
}

.btn-primary:hover {
  background-color: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 6px 10px rgba(0, 0, 0, 0.1);
}

.btn-round {
  border-radius: 30px;
}

/* 节标题样式 */
.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-title {
  font-size: 36px;
  font-weight: bold;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.section-subtitle {
  font-size: 18px;
  color: var(--second-text-color);
  max-width: 700px;
  margin: 0 auto;
}

/* 特性模块样式 */
.features-section {
  padding: 90px 0;
  background-color: var(--main-bg-color);
}
#features{
  background-color: #fff;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 20px;
}

.feature-card {
  padding: 20px;
  background-color: var(--main-bg-color);
  border-radius: 10px;
  box-shadow: var(--box-shadow);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.feature-icon {
  margin-bottom: 20px;
  display: flex;
  justify-content: left;
  align-items: center;
}

.feature-icon div {
  width: 51px;
  height: 51px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 15px;
  margin-right: 20px;
}

.feature-icon img {
 width: 51px;
  color: var(--accent-color);
}


.feature-title {
  font-size: 18px;
  font-weight: bold;
  margin-bottom: 10px;
  color: var(--primary-color);
}

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

/* 解决方案样式 */
.solutions-section {
  padding: 90px 0;
  background-color: var(--second-bg-color);
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.solution-card {
  padding: 40px 30px;
  background-color: var(--main-bg-color);
  border-radius: 10px;
  box-shadow: var(--box-shadow);
  transition: var(--transition);
  text-align: left;
}

.solution-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.solution-icon {
  margin-bottom: 20px;
  /* 自动布局子元素 */
  position: static;
  left: 40px;
  top: 35px;
  width: 72px;
  height: 72px;
  border-radius: 200px;
  opacity: 1;
  display: flex;
  align-items: center;
  justify-content: center;

  background: #1CA3EB;

  z-index: 0;
}

.solution-icon img {
  width: 36px;
}

.solution-title {
  font-size: 20px;
  font-weight: bold;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.solution-divider {
  width: 50px;
  height: 2px;
  background-color: var(--accent-color);
  margin: 0 0 15px;

  z-index: 2;
}

.solution-desc {
  font-size: 15px;
  color: var(--second-text-color);
}

/* 服务商区域样式 */
.partners-section {
  padding: 90px 0;
  background-color: var(--main-bg-color);
}

.search-container {
  max-width: 600px;
  margin: 0 auto;
}

.search-box {
  display: flex;
  overflow: hidden;
  box-shadow: var(--box-shadow);
}

.search-box input {
  flex: 1;
  padding: 15px 25px;
  font-size: 16px;
  border: none;
  outline: none;
}

.search-btn {
  padding: 0 30px;
  background-color: var(--accent-color);
  color: var(--light-text-color);
  font-size: 16px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

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

/* 页脚样式 */
.footer {
  padding: 20px 0 20px;
  background-color: #fafafa;
  color: #1F3251;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-logo {
  margin-bottom: 20px;
}

.footer-logo img {
  height: 88px;
}

.contact-info p {
  margin-bottom: 10px;
  display: flex;
  align-items: center;
}

.contact-info i {
  margin-right: 10px;
  color: var(--accent-color);
}

.footer-links h3 {
  font-size: 18px;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-links ul {
  margin-bottom: 10px;
  font-size: 16px;
  display: flex;
  justify-content: left;
  height: 88px;
  align-items: center;
}
.footer-links ul li{
  margin-right: 50px;
}
.footer-links ul li a:hover {
  color: var(--accent-color);
}

.copyright {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 14px;
}
.footer-p img{
  width: 17px;
  margin-right: 10px;
}
.footer-p{
  display: flex;
  align-items: center;
  margin-bottom: 10px;
}
/* 动画样式 */
.animate-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.animate-in.animate-active {
  opacity: 1;
  transform: translateY(0);
}

/* 响应式设计 */
@media (max-width: 992px) {
  .main-title {
    font-size: 36px;
  }

  .subtitle {
    font-size: 16px;
  }

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

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

  .footer-content {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .hero-background{
   background-position: top left;
  }
  .footer-links ul{
    display: block;
    margin-bottom: 30px;
  }
}

@media (max-width: 768px) {
  .hero-section {
    height: 500px;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background-color: var(--main-bg-color);
    box-shadow: var(--box-shadow);
    padding: 20px 0;
  }

  .nav-menu.active {
    display: block;
    height: 100vh;
  }

  .nav-menu ul {
    flex-direction: column;
  }
  .logo img {
    height: 38px;
  }
  .nav-menu li {
    margin: 0;
    padding: 10px 0;
  }

  .nav-menu a {
    color: var(--main-text-color);
  }

  .mobile-menu-btn {
    display: flex;
    align-items: center;
  }
  .mobile-menu-btn img{
    height: 18px;
  }
  .main-title {
    font-size: 30px;
  }

  .subtitle {
    font-size: 15px;
  }

  .section-title {
    font-size: 28px;
  }

  .section-subtitle {
    font-size: 16px;
  }

  .features-grid,
  .solutions-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}