body {
  background: #f7f9fa;
  font-family: 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif;
  color: #222;
  margin: 0;
}
.container {
  max-width: 1100px;
  margin: 40px auto 40px auto;
  background: none;
  padding: 0 20px;
}
.case-title {
  font-size: 28px;
  font-weight: bold;
  margin-bottom: 32px;
  margin-top: 0;
}
.flex-row {
  display: flex;
  gap: 48px;
  align-items: flex-start;
  margin-bottom: 48px;
}
.flex-row .intro-text {
  flex: 1.1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.flex-row .intro-img {
  flex: 1.2;
  display: flex;
  align-items: center;
  justify-content: center;
}
.flex-row .intro-img img {
  max-width: 420px;
  max-height: 300px;
  width: auto;
  border-radius: 12px;
  box-shadow: 0 4px 24px rgba(60,179,113,0.10);
}
.intro-list {
  margin: 24px 0 0 0;
  padding: 0;
  list-style: none;
}
.intro-list li {
  margin-bottom: 10px;
  font-size: 16px;
  position: relative;
  padding-left: 28px;
}
.intro-list li:before {
  content: '✔';
  color: #43b36a;
  font-size: 18px;
  position: absolute;
  left: 0;
  top: 0;
}
.section-title {
  font-size: 20px;
  font-weight: bold;
  margin: 48px 0 18px 0;
}
.tech-table {
  width: 100%;

  margin: 0 auto 40px auto;
  border-collapse: collapse;
  background: #f8fafb;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(60,179,113,0.06);
}
.tech-table th, .tech-table td {
  padding: 16px 22px;
  font-size: 16px;
  border-bottom: 1px solid #eaeaea;
  text-align: left;
}
.tech-table th {
  background: #f1f5f8;
  font-weight: 600;
}
.tech-table tr:last-child td {
  border-bottom: none;
}
.tech-table td {
  color: #222;
}
.tech-table tr {
  background: #f8fafb;
}
.tech-table tr:nth-child(even) {
  background: #f4f7fa;
}
.tech-row {
  display: flex;
  gap: 48px;
  align-items: flex-start;
  margin-bottom: 48px;
}
.tech-row .tech-desc {
  flex: 1.1;
  font-size: 16px;
  line-height: 1.8;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.tech-row .tech-img {
  flex: 1.2;
  display: flex;
  align-items: center;
  justify-content: center;
}
.tech-row .tech-img img {
  max-width: 420px;
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 4px 24px rgba(60,179,113,0.10);
}
.tech-list {
  margin: 0 0 0 0;
  padding: 0;
  list-style: none;
}
.tech-list li {
  margin-bottom: 18px;
  font-size: 16px;
  position: relative;
  padding-left: 44px;
  min-height: 32px;
  display: flex;
  align-items: center;
}
.tech-list li:before {
  content: counter(li, decimal);
  counter-increment: li;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: #2196f3;
  color: #fff;
  font-weight: bold;
  border-radius: 50%;
  font-size: 16px;
  position: absolute;
  left: 0;
  top: 0;
}
.tech-list {
  counter-reset: li;
}
.case-examples {
  display: flex;
  gap: 32px;
  margin-top: 32px;
}
.case-card {
  flex: 1;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(60,179,113,0.08);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.case-card-img {
  width: 100%;
  height: 200px;
  background: #f4f7fa;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.case-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.case-card-body {
  padding: 18px 18px 14px 18px;
}
.case-card-title {
  font-size: 17px;
  font-weight: bold;
  margin-bottom: 8px;
}
.case-card-desc {
  font-size: 15px;
  color: #555;
}
@media (max-width: 900px) {
  .container {
    padding: 0 6px;
  }
  .flex-row, .tech-row, .case-examples {
    flex-direction: column;
    gap: 20px;
  }
  .flex-row .intro-img, .tech-row .tech-img {
    margin-bottom: 18px;
    justify-content: flex-start;
  }
  .flex-row .intro-img img, .tech-row .tech-img img {
    max-width: 100%;
    width: 100%;
    height: auto;
    margin: 0 auto;
    display: block;
  }
  .case-card-img {
    height: 140px;
  }
  .case-examples {
    gap: 16px;
  }
  .case-card {
    min-width: 0;
  }
  .tech-table {
    font-size: 13px;
    max-width: 100vw;
    overflow-x: auto;
    display: block;
  }
  .tech-table th, .tech-table td {
    padding: 10px 8px;
    font-size: 13px;
    white-space: nowrap;
  }
}