.engineering-hero {
  padding-block: 90px 80px;
}
.engineering-hero h1 {
  max-width: 1060px;
  font-size: clamp(46px, 6vw, 88px);
}
.engineering-lead {
  font-size: 20px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 580px;
  margin: 32px 0 0 auto;
}
.flow-section {
  border-block: 1px solid var(--rule);
  padding-block: 28px 36px;
}
.request-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 0;
  margin: 28px 0 0;
  list-style: none;
  gap: 24px;
}
.request-flow li {
  display: grid;
  grid-template-columns: 1fr 16px;
  gap: 18px;
  border-right: 1px solid var(--rule);
  padding-right: 24px;
}
.request-flow li:last-child {
  border: 0;
}
.request-flow .index {
  grid-column: 1/-1;
}
.request-flow strong {
  font-size: 19px;
  font-weight: 500;
  line-height: 1.5;
}
.engineering-sections section {
  display: grid;
  grid-template-columns: 1fr 3fr;
  gap: 48px;
  padding-block: 80px;
  border-bottom: 1px solid var(--rule);
}
.engineering-sections section > .index {
  padding-top: 12px;
}
.engineering-sections h2 {
  font-size: clamp(30px, 3.7vw, 50px);
  max-width: 800px;
}
.engineering-sections p {
  font-size: 18px;
  line-height: 1.95;
  color: var(--muted);
  max-width: 740px;
  margin-top: 28px;
}
.engineering-return {
  padding-block: 60px 90px;
}
html[lang="zh-Hans"] .engineering-hero h1 {
  font-size: clamp(42px, 5.4vw, 80px);
}
@media (max-width: 700px) {
  .engineering-hero {
    padding-block: 56px;
  }
  .engineering-lead {
    font-size: 17px;
    margin-left: 0;
  }
  .request-flow {
    grid-template-columns: 1fr 1fr;
    gap: 32px 22px;
  }
  .request-flow li:nth-child(2) {
    border: 0;
  }
  .request-flow strong {
    font-size: 16px;
  }
  .engineering-sections section {
    grid-template-columns: 1fr;
    gap: 20px;
    padding-block: 50px;
  }
  .engineering-sections p {
    font-size: 16px;
  }
  .engineering-return {
    padding-block: 44px 64px;
  }
}

.engineering-figure {
  margin: 0 auto 8px;
}
.engineering-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--rule);
  border-radius: 18px;
  background: var(--paper);
}
.engineering-figure figcaption {
  margin-top: 14px;
  max-width: 72ch;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.test-summary {
  display: grid;
  gap: 14px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}
.test-summary li {
  padding: 16px 18px;
  border: 1px solid var(--rule);
  background: var(--paper);
  font-size: 15px;
  line-height: 1.65;
}
.test-summary strong {
  font-weight: 600;
}