body {
  margin: 0;
  font-family: "Helvetica Neue", Arial, sans-serif;
  background-color: #0b1d3a; 
  color: #ffffff;
  line-height: 1.6;
}
header {
  text-align: center;
  padding: 50px 20px 50px;
  background: linear-gradient(135deg, #0b1d3a, #142850);
}
header img.logo {
  width: 160px;
  margin-bottom: 25px;
}
header h1 {
  font-size: 2.0rem;
  margin-bottom: 20px;
}
header p {
  font-size: 1.1rem;
  color: #d1d5db;
  margin-bottom: 35px;
}
.cta-btn {
  background: linear-gradient(135deg, #34d399, #059669);
  color: #ffffff;
  padding: 16px 36px;
  font-size: 1rem;
  font-weight: bold;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  display: inline-block;
}
.cta-btn:hover {
  background: linear-gradient(135deg, #6ee7b7, #10b981);
  transform: translateY(-2px);
}
.cta-floating {
  position: fixed;
  bottom: 20px;
  right: 65px;
  z-index: 1000;
}
section {
  padding: 40px 20px; /* 间隙缩小 */
  max-width: 1100px;
  margin: 0 auto;
}
section h2 {
  text-align: center;
  font-size: 1.9rem;
  margin-bottom: 30px;
  position: relative;
}
section h2::after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  background: #34d399;
  margin: 12px auto 0;
  border-radius: 2px;
}
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
  text-align: center;
}
.feature-box {
  background-color: #142850;
  padding: 25px;
  border-radius: 12px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.25);
  transition: transform .2s;
}
.feature-box:hover {
  transform: translateY(-4px);
}
.case-box {
  background-color: #101d35;
  padding: 20px;
  border-radius: 8px;
  margin-bottom: 15px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}
.highlight-banner {
  background: linear-gradient(135deg, #2563eb, #1e3a8a);
  padding: 25px 20px;
  border-radius: 12px;
  text-align: center;
  color: #ffffff;
  font-size: 1.1rem;
  font-weight: bold;
  margin: 40px auto;
  max-width: 900px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}
.ai-box {
  background-color: #142850;
  padding: 35px 25px;
  border-radius: 12px;
  margin-bottom: 30px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.25);
}
.ai-box h3 {
  color: #34d399;
  margin-bottom: 15px;
}
.ai-box ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.ai-box ul li {
  margin-bottom: 10px;
  padding-left: 22px;
  position: relative;
}
.ai-box ul li::before {
  content: "✔";
  position: absolute;
  left: 0;
  color: #34d399;
}
.insert-image {
  text-align: center;
  margin: 40px auto;
}
.insert-image img {
  max-width: 90%;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}
footer {
  text-align: center;
  font-size: 0.9rem;
  color: #9ca3af;
  padding: 30px 20px;
  border-top: 1px solid #2e3a55;
}
footer a {
  color: #34d399;
  text-decoration: none;
}
footer a:hover {
  text-decoration: underline;
}
  .faq-container {
max-width: 800px;
margin: 0 auto;
}
.faq-container {
max-width: 800px;
margin: 0 auto;
}
.faq-item {
margin-bottom: 12px;
border-radius: 8px;
overflow: hidden;
background-color: #142850;
box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}
.faq-question {
width: 100%;
text-align: left;
padding: 14px 18px;
font-size: 1rem;
background: #1e3a5f;
color: #ffffff;
border: none;
cursor: pointer;
outline: none;
font-weight: bold;
display: flex;
justify-content: space-between;
align-items: center;
}
.faq-question:hover {
background: #2563eb;
}
.faq-icon {
font-size: 1.2rem;
transition: transform 0.3s;
}
.faq-answer {
max-height: 0;
overflow: hidden;
transition: max-height 0.4s ease, padding 0.3s ease;
background: #0f213f;
padding: 0 18px;
}
.faq-answer p {
margin: 12px 0;
color: #d1d5db;
}
.faq-item.active .faq-answer {
max-height: 300px;
padding: 12px 18px;
}
.faq-item.active .faq-icon {
content: "−";
}