body {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
  color: #1a1a1a;
  line-height: 1.6;
}
a:hover {
  text-decoration: none;
}
.highlight {
  color: #409eff;
  font-weight: 600;
}
.brand-logo {
  width: 20px;
  height: 20px;
  float: left;
  margin-right: 15px;
}
.index .hero,
.feishu .hero,
.ai .hero {
  padding: 40px 0 60px;
  text-align: center;
}
.index .hero h1,
.feishu .hero h1,
.ai .hero h1 {
  font-size: 48px;
  font-weight: 800;
  margin: 0 0 20px;
  letter-spacing: -1px;
  line-height: 1.6;
}
.index .hero h1 span,
.feishu .hero h1 span,
.ai .hero h1 span {
  color: #409eff;
}
.index .hero p,
.feishu .hero p,
.ai .hero p {
  font-size: 16px;
  color: #666;
  max-width: 600px;
  margin: 0 auto 30px;
}
.feishu .hero .buttons,
.ai .hero .buttons {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 30px;
}
.feishu .hero .buttons a,
.ai .hero .buttons a {
  border: none;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  padding: 10px 20px;
  transition: opacity 0.3s;
}
.feishu .hero .buttons a:hover,
.ai .hero .buttons a:hover {
  opacity: 0.8;
}
.feishu .hero .buttons a:first-child,
.ai .hero .buttons a:first-child {
  background-color: #409eff;
  color: #fff;
}
.feishu .hero .buttons a:nth-child(2),
.ai .hero .buttons a:nth-child(2) {
  border: 1px solid #ccc;
  background-color: transparent;
  color: #333;
}
.feishu .hero .stats {
  font-size: 10px;
  color: #666;
  margin: 16px auto;
}
.index .hero .tags,
.feishu .hero .tags {
  display: flex;
  justify-content: center;
  gap: 10px;
}
.index .hero .tags span,
.feishu .hero .tags span {
  background-color: #f5f5f5;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
  color: #555;
}

.index .card,
.ai .card {
  border: 1px solid #eee;
  border-radius: 16px;
  padding: 30px;
  position: relative;
  background-color: #fff;
  transition: box-shadow 0.3s;
  margin-bottom: 80px;
}
.index .card:hover,
.ai .card:hover {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}
.index .card .tag,
.ai .card .tag {
  position: absolute;
  top: 20px;
  right: 20px;
  font-size: 12px;
  color: #409eff;
  border: 1px solid #e0dfff;
  padding: 2px 8px;
  border-radius: 8px;
}
.index .card .method {
  font-size: 12px;
  color: #409eff;
  margin-bottom: 10px;
  font-weight: bold;
}
.index .card h3,
.ai .card h3 {
  font-size: 20px;
  margin: 0 0 10px;
}
.index .card .desc,
.ai .card .desc {
  font-size: 14px;
  color: #666;
  margin-bottom: 20px;
}
.index .card ul,
.ai .card ul {
  margin-bottom: 25px;
  list-style: none;
  padding: 0;
}
.index .card ul li,
.ai .card ul li {
  font-size: 14px;
  color: #444;
  margin-bottom: 8px;
  padding-left: 15px;
  position: relative;
}
.index .card ul li::before,
.ai .card ul li::before {
  content: "•";
  color: #409eff;
  position: absolute;
  left: 0;
  font-weight: bold;
}
.index .card .buttons {
  display: flex;
  gap: 10px;
}
.index .card .buttons a {
  display: inline-block;
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  transition: opacity 0.3s;
}
.index .card .buttons a:hover {
  opacity: 0.8;
}
.index .card .buttons a:first-child {
  background-color: #409eff;
  color: #fff;
}
.index .card .buttons a:nth-child(2) {
  border: 1px solid #ccc;
  background-color: transparent;
  color: #333;
}
.ai .card .box {
  background-color: #f9f9f9;
  border-radius: 6px;
  padding: 12px;
  font-size: 11px;
  display: flex;
  justify-content: space-between;
}
.ai .card .box .name {
  color: #666;
}
.ai .card .box .value {
  color: #333;
}

.index .feature {
  margin-bottom: 60px;
  border-top: 1px solid #f0f0f0;
  padding-top: 40px;
}
.index .feature h4 {
  font-size: 14px;
  font-weight: 700;
  margin: 0 0 8px;
}
.index .feature p {
  font-size: 12px;
  color: #888;
  margin-bottom: 20px;
}

.index .title,
.feishu .title,
.ai .title {
  text-align: center;
  margin-bottom: 50px;
}
.index .title h2,
.feishu .title h2,
.ai .title h2 {
  font-size: 28px;
  margin: 0 0 10px;
}
.index .title p,
.feishu .title p,
.ai .title p {
  color: #666;
  font-size: 14px;
}

.index .process,
.index .signal {
  margin-bottom: 60px;
}
.index .process > h3,
.index .signal > h3 {
  margin: 0 0 20px;
}
.index .process > p,
.index .signal > p {
  font-size: 14px;
  color: #666;
  margin-bottom: 30px;
}
.index .process .steps {
  position: relative;
  padding: 0 0 0 80px;
}
.index .process .steps::before {
  content: "";
  position: absolute;
  top: 20px;
  left: 38px;
  width: 1px;
  height: 70%;
  border: 1px solid #e0dfff;
}
.index .process .steps .step {
  position: relative;
  margin-bottom: 30px;
  padding-top: 12px;
}
.index .process .step .num {
  position: absolute;
  top: 5px;
  left: -60px;
  height: 40px;
  width: 40px;
  font-size: 12px;
  line-height: 40px;
  color: #409eff;
  border: 1px solid #e0dfff;
  border-radius: 20px;
  background-color: #f5f5f5;
  font-weight: bold;
  text-align: center;
}
.index .process .step h4 {
  margin: 0 0 15px;
}
.index .signal > p {
  margin-bottom: 10px;
}
.index .signal .items .item {
  border-bottom: 1px solid #e0dfff;
  padding: 15px 0 15px 40px;
  position: relative;
}
.index .signal .items .item::before {
  content: "";
  position: absolute;
  width: 1px;
  height: 26px;
  top: 30px;
  left: 20px;
  border: 2px solid #409eff;
  border-radius: 2px;
}
.index .signal .item h4 {
  margin: 0 0 15px;
}

.index .grids,
.feishu .grids {
  margin-bottom: 80px;
}
.index .grid,
.feishu .grid {
  border: 1px solid #eee;
  border-radius: 12px;
  padding: 25px;
  margin-bottom: 20px;
}
.feishu .grid .nums {
  font-size: 11px;
  color: #999;
  margin-bottom: 8px;
}
.index .grid h4,
.feishu .grid h4 {
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 10px;
}
.index .grid p,
.feishu .grid p {
  font-size: 13px;
  color: #666;
  line-height: 1.5;
  margin: 0;
}

.index .faq,
.feishu .faq,
.ai .faq {
  margin-bottom: 100px;
}
.index .faq > div,
.feishu .faq > div,
.ai .faq > div {
  border-top: 1px solid #eee;
  padding: 20px 0;
}
.index .faq .question,
.feishu .faq .question,
.ai .faq .question {
  font-size: 16px;
  font-weight: 500;
}
.index .faq .answer,
.feishu .faq .answer,
.ai .faq .answer {
  font-size: 14px;
  color: #666;
  margin-top: 10px;
}

.index .cta,
.feishu .cta,
.ai .cta {
  background-color: #f9f9f9;
  border-radius: 20px;
  text-align: center;
  padding: 60px 20px;
  margin-bottom: 50px;
}
.feishu .cta .feature {
  margin-bottom: 24px;
  font-size: 14px;
  color: #666;
}
.index .cta h2,
.feishu .cta h2,
.ai .cta h2 {
  font-size: 32px;
  margin: 0 0 15px;
}
.index .cta p,
.feishu .cta p,
.ai .cta p {
  color: #666;
  margin: 0 0 30px;
}
.index .cta div a,
.feishu .cta div a,
.ai .cta div a {
  display: inline-block;
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  transition: opacity 0.2s;
  margin: 0 8px 10px;
}
.index .cta div a:hover,
.feishu .cta div a:hover,
.ai .cta div a:hover {
  opacity: 0.8;
}
.index .cta div a:first-child,
.feishu .cta div a:first-child,
.ai .cta div a:first-child {
  background-color: #409eff;
  color: #fff;
}
.index .cta div a:nth-child(2),
.feishu .cta div a:nth-child(2) {
  border: 1px solid #409eff;
  background-color: transparent;
  color: #409eff;
}
.index .cta div a:nth-child(3) {
  border: 1px solid #ccc;
  background-color: transparent;
  color: #333;
}

.feishu .demo {
  background-color: #fff;
  border: 1px solid #f0f0f0;
  border-radius: 8px;
  padding: 20px 5px;
  margin-bottom: 60px;
}
.feishu .demo-table table {
  width: 100%;
}
.feishu .demo-table th,
.feishu .demo-table td {
  text-align: left;
  padding: 8px;
  font-size: 11px;
  color: #666;
  border-bottom: 1px solid #f0f0f0;
}
.feishu .demo-table th {
  font-weight: 500;
  color: #333;
}
.feishu .demo-sidebar div {
  background-color: #fafafa;
  border-radius: 6px;
  padding: 16px;
}
.feishu .demo-sidebar h4 {
  font-size: 11px;
  font-weight: 500;
  margin: 0 0 12px;
  color: #333;
}
.feishu .demo-sidebar p {
  font-size: 10px;
  color: #666;
  line-height: 1.5;
  margin: 0 0 16px;
}

.feishu .values {
  margin-bottom: 40px;
}
.feishu .values .value {
  border: 1px solid #f0f0f0;
  background-color: #fff;
  border-radius: 6px;
  padding: 20px;
  margin-bottom: 20px;
}
.feishu .values .value h3 {
  font-size: 13px;
  font-weight: 500;
  margin: 0 0 12px;
}
.feishu .values .value ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.feishu .values .value ul li {
  font-size: 11px;
  color: #666;
  margin-bottom: 10px;
  padding-left: 12px;
  position: relative;
}
.feishu .values .value ul li::before {
  content: "|";
  position: absolute;
  left: 0;
  color: #409eff;
}

.feishu .teams {
  margin-bottom: 20px;
}
.feishu .teams .team {
  padding: 20px;
  background-color: #fff;
  border-radius: 6px;
  border: 1px solid #f0f0f0;
  margin-bottom: 20px;
}
.feishu .team h4 {
  font-size: 13px;
  font-weight: 500;
  margin: 0 0 8px;
}
.feishu .team p {
  font-size: 11px;
  color: #666;
  line-height: 1.5;
  margin: 0;
}

.feishu .value2 {
  margin-bottom: 40px;
}
.feishu .value2 .value {
  padding: 16px;
  margin-bottom: 20px;
}
.feishu .value2 .value h4 {
  font-size: 12px;
  font-weight: 500;
  margin: 0 0 8px;
  line-height: 1.6;
}
.feishu .value2 .value h4 span {
  color: #409eff;
}
.feishu .value2 .value p {
  font-size: 10px;
  color: #666;
  line-height: 1.5;
  margin: 0;
}

.ai .methods {
  margin-bottom: 40px;
}
.ai .methods h2 {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 8px;
}
.ai .methods p {
  font-size: 12px;
  color: #666;
  margin: 0 0 24px;
}
.ai .methods .method {
  border: 1px solid #f0f0f0;
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 16px;
}
.ai .methods .method .title {
  font-size: 13px;
  font-weight: 600;
  margin: 0 0 8px;
}
.ai .methods .method .desc {
  font-size: 11px;
  color: #666;
  line-height: 1.4;
}

.ai .grids {
  margin-bottom: 80px;
}
.ai .grid {
  text-align: center;
  margin-bottom: 20px;
}
.ai .grid .nums {
  width: 24px;
  height: 24px;
  background-color: #409eff;
  color: #fff;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  margin-bottom: 12px;
}
.ai .grid h4 {
  font-size: 13px;
  font-weight: 600;
  margin: 0 0 10px;
}
.ai .grid p {
  font-size: 11px;
  color: #666;
  line-height: 1.4;
  margin: 0;
}

.footer {
  text-align: center;
  padding: 40px 0;
  border-top: 1px solid #f0f0f0;
  color: #999;
  font-size: 12px;
}

#customer-service .modal-body {
  text-align: center;
  padding: 0;
  width: 100%;
  overflow: hidden;
}

@media (min-width: 768px) {
  .navbar .navbar-collapse .navbar-nav:first-child {
    margin-left: 80px;
  }
  .navbar .navbar-right li a {
    background-color: #409eff;
    color: #fff;
    display: inline-block;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    transition: opacity 0.3s;
    margin-top: 10px;
  }
  .navbar .navbar-right li a:hover {
    opacity: 0.8;
  }
}