/* 页面专属样式 */
.service-feature {
  background: #f0f4fb;
  border-radius: 16px;
  padding: 20px 24px;
  transition: all 0.2s;
}
.service-feature:hover {
  background: #eaf0fa;
  transform: translateY(-2px);
}
.step-card {
  background: white;
  border-radius: 16px;
  padding: 24px;
  border: 1px solid #d7e1ed;
  text-align: center;
  transition: all 0.2s;
}
.step-card:hover {
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.06);
  transform: translateY(-4px);
}
.step-card .step-num {
  display: inline-block;
  background: #4f7eb3;
  color: white;
  width: 40px;
  height: 40px;
  line-height: 40px;
  border-radius: 50%;
  font-weight: 700;
  font-size: 18px;
  margin-bottom: 12px;
}
.banner-sub {
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 24px;
  padding: 48px 56px;
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 12px 40px rgba(79, 126, 179, 0.08);
  border-left: 6px solid #4f7eb3;
  position: relative;
  overflow: hidden;
}

.banner-sub::before {
  content: "";
  position: absolute;
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(79, 126, 179, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.banner-title {
  letter-spacing: -0.02em;
}

.banner-desc {
  line-height: 1.8;
}

.banner-visual-circle {
  position: absolute;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  border: 2px dashed rgba(79, 126, 179, 0.2);
  animation: spin 20s linear infinite;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 1024px) {
  .banner-sub {
    padding: 40px 32px;
  }
}

@media (max-width: 768px) {
  .banner-sub {
    padding: 32px 24px;
    border-left-width: 4px;
  }
}

@media (max-width: 640px) {
  .banner-sub {
    padding: 24px 20px;
    border-radius: 16px;
  }
  .step-card {
    padding: 16px;
  }
  .service-feature {
    padding: 16px 18px;
  }
}