* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
}
body {
  color: #1D2129;
  background-color: #FFFFFF;
  line-height: 1.6;
}
a {
  text-decoration: none;
  color: inherit;
}
ul {
  list-style: none;
}
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}
.btn {
  display: inline-block;
  padding: 10px 24px;
  border-radius: 8px;
  font-weight: 600;
  text-align: center;
  transition: all 0.3s ease;
}
.btn-primary {
  background-color: #165DFF;
  color: #FFFFFF;
  border: none;
}
.btn-primary:hover {
  background-color: #0E42D2;
}
.btn-outline {
  background-color: transparent;
  color: #FFFFFF;
  border: 2px solid #FFFFFF;
}
.btn-outline:hover {
  background-color: rgba(255, 255, 255, 0.1);
}
.section-title {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 16px;
  text-align: center;
}
.section-divider {
  width: 80px;
  height: 3px;
  background-color: #165DFF;
  margin: 0 auto 40px;
}

/* 顶部通知栏 */
.notice-bar {
  background-color: rgba(22, 93, 255, 0.1);
  color: #165DFF;
  font-size: 14px;
  padding: 8px 0;
}
.notice-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: center;
}
@media (min-width: 768px) {
  .notice-content {
    flex-direction: row;
    justify-content: space-between;
  }
}
.notice-bar a {
  text-decoration: underline;
  font-weight: 600;
}

/* 导航栏 */
.header {
  background-color: #FFFFFF;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 0;
  z-index: 999;
}
.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
}
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 700;
  color: #1D2129;
}
.logo-icon {
  width: 32px;
  height: 32px;
  background-color: #165DFF;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
}
.desktop-nav {
  display: none;
  gap: 32px;
  font-weight: 500;
}
@media (min-width: 992px) {
  .desktop-nav {
    display: flex;
  }
}
.desktop-nav a:hover {
  color: #165DFF;
}
.mobile-menu-btn {
  display: block;
  font-size: 24px;
  cursor: pointer;
}
@media (min-width: 992px) {
  .mobile-menu-btn {
    display: none;
  }
}
.mobile-nav {
  display: none;
  padding: 16px 0;
  border-top: 1px solid #F2F3F5;
}
.mobile-nav a {
  display: block;
  padding: 12px 0;
  font-weight: 500;
}
.mobile-nav a:hover {
  color: #165DFF;
}
.mobile-nav-sub {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid #F2F3F5;
}
.mobile-nav-sub a {
  font-size: 14px;
  color: #666666;
}

/* 首页Banner */
.banner {
  background: linear-gradient(90deg, rgba(22, 93, 255, 0.9), rgba(54, 207, 201, 0.9));
  color: #FFFFFF;
  padding: 60px 0;
  position: relative;
  overflow: hidden;
}
.banner::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 40px;
  background: linear-gradient(to top, #FFFFFF, transparent);
}
.banner-content {
  max-width: 800px;
  padding: 40px 0;
}
.banner-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 24px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}
.banner-desc {
  font-size: clamp(1rem, 2vw, 1.25rem);
  margin-bottom: 32px;
  opacity: 0.9;
}
.banner-btns {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
@media (min-width: 768px) {
  .banner-btns {
    flex-direction: row;
    gap: 24px;
  }
}

/* 关于我们 */
.about {
  background-color: #F2F3F5;
  padding: 80px 0;
}
.about-content {
  display: flex;
  flex-direction: column;
  gap: 40px;
}
@media (min-width: 992px) {
  .about-content {
    flex-direction: row;
    align-items: center;
  }
}
.about-img {
  flex: 1;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}
.about-img img {
  width: 100%;
  height: auto;
  display: block;
}
.about-text {
  flex: 1;
}
.about-text h3 {
  font-size: 24px;
  margin-bottom: 16px;
}
.about-text p {
  margin-bottom: 16px;
  color: #333333;
}
.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}
.about-feature {
  display: flex;
  align-items: center;
  gap: 8px;
}
.feature-icon {
  width: 24px;
  height: 24px;
  background-color: #165DFF;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-size: 12px;
}

/* 业务服务 */
.services {
  padding: 80px 0;
}
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
@media (min-width: 768px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 992px) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
.service-card {
  background-color: #FFFFFF;
  border-radius: 12px;
  padding: 32px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease;
}
.service-card:hover {
  transform: translateY(-5px);
}
.service-icon {
  width: 64px;
  height: 64px;
  background-color: rgba(22, 93, 255, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #165DFF;
  font-size: 24px;
  margin-bottom: 24px;
}
.service-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 16px;
}
.service-desc {
  color: #666666;
  margin-bottom: 24px;
}
.service-link {
  color: #165DFF;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* 成功案例 */
.cases {
  background-color: #F2F3F5;
  padding: 80px 0;
}
.cases-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
@media (min-width: 768px) {
  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 992px) {
  .cases-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
.case-card {
  background-color: #FFFFFF;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}
.case-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}
.case-content {
  padding: 24px;
}
.case-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
}
.case-desc {
  color: #666666;
  font-size: 14px;
  margin-bottom: 16px;
}
.case-tag {
  display: inline-block;
  padding: 4px 12px;
  background-color: rgba(22, 93, 255, 0.1);
  color: #165DFF;
  font-size: 12px;
  border-radius: 16px;
}

/* 联系我们 */
.contact {
  padding: 80px 0;
}
.contact-content {
  display: flex;
  flex-direction: column;
  gap: 40px;
}
@media (min-width: 992px) {
  .contact-content {
    flex-direction: row;
  }
}
.contact-form {
  flex: 1;
  background-color: #FFFFFF;
  border-radius: 12px;
  padding: 32px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}
.form-group {
  margin-bottom: 24px;
}
.form-label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
}
.form-input, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #E5E6EB;
  border-radius: 8px;
  font-size: 16px;
}
.form-input:focus, .form-textarea:focus {
  outline: none;
  border-color: #165DFF;
}
.form-textarea {
  min-height: 120px;
  resize: vertical;
}
.form-submit {
  width: 100%;
  padding: 14px;
  background-color: #165DFF;
  color: #FFFFFF;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.3s ease;
}
.form-submit:hover {
  background-color: #0E42D2;
}
.contact-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.info-icon {
  width: 40px;
  height: 40px;
  background-color: rgba(22, 93, 255, 0.1);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #165DFF;
  font-size: 20px;
  flex-shrink: 0;
}
.info-content h4 {
  font-size: 18px;
  margin-bottom: 8px;
}
.info-content p {
  color: #666666;
}
.info-map {
  width: 100%;
  height: 300px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid #E5E6EB;
}
.info-map img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* 页脚 */
.footer {
  background-color: #1D2129;
  color: #FFFFFF;
  padding: 60px 0 24px;
}
.footer-top {
  display: flex;
  flex-direction: column;
  gap: 40px;
  margin-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 40px;
}
@media (min-width: 768px) {
  .footer-top {
    flex-direction: row;
    justify-content: space-between;
  }
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer-logo-icon {
  width: 32px;
  height: 32px;
  background-color: #165DFF;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.footer-desc {
  color: rgba(255, 255, 255, 0.7);
  max-width: 300px;
}
.footer-links h4 {
  font-size: 18px;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 8px;
}
.footer-links h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 40px;
  height: 2px;
  background-color: #165DFF;
}
.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.3s ease;
}
.footer-links a:hover {
  color: #165DFF;
}
.footer-bottom {
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
  font-size: 14px;
  padding-top: 24px;
}
.footer-bottom a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: underline;
}

/* 合规页面通用样式（隐私政策/用户协议） */
.policy-page {
  padding: 60px 0;
  background-color: #F2F3F5;
}
.policy-container {
  background-color: #FFFFFF;
  border-radius: 12px;
  padding: 40px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}
.policy-title {
  font-size: 28px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 40px;
}
.policy-meta {
  text-align: center;
  color: #666666;
  margin-bottom: 40px;
  font-size: 14px;
}
.policy-section {
  margin-bottom: 32px;
}
.policy-section h3 {
  font-size: 20px;
  margin-bottom: 16px;
  color: #165DFF;
}
.policy-section p {
  margin-bottom: 16px;
  color: #333333;
}
.policy-section ul {
  margin-bottom: 16px;
  padding-left: 24px;
  list-style-type: disc;
  color: #333333;
}
.policy-section li {
  margin-bottom: 8px;
}