/* ── 通用区块 ── */
.section { padding: clamp(58px, 8vw, 96px) 0; }
.section-kicker {
  margin: 0 0 10px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--muted);
}
.section > .container > h2 { margin-bottom: 34px; }

/* ── 关于我们 ── */
.section-about { background: var(--surface); border-block: 1px solid var(--line); }

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.9fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}
.about-main p { color: #39422f; }
.about-main p:last-child { margin-bottom: 0; }

.about-side {
  padding: 26px 26px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
}
.about-side dl { margin: 0; }
.about-side dl > div {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line);
}
.about-side dl > div:last-child { border-bottom: 0; }
.about-side dt { font-size: 0.86rem; color: var(--muted); white-space: nowrap; }
.about-side dd { margin: 0; font-size: 0.9rem; font-weight: 600; text-align: right; }

/* ── 服务项目 ── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px;
}
.card {
  padding: 26px 24px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--line);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: var(--accent);
}
.card h3 { margin-bottom: 8px; }
.card p { margin: 0; font-size: 0.92rem; color: var(--muted); }
.card::before {
  content: "";
  display: block;
  width: 34px;
  height: 4px;
  margin-bottom: 18px;
  border-radius: 2px;
  background: var(--accent);
}

/* ── 服务流程 ── */
.section-process { background: var(--primary); color: #f2f2f0; }
.section-process .section-kicker { color: rgba(242, 242, 240, 0.66); }
.section-process h2 { color: #fff; }

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 20px;
  counter-reset: step;
}
.steps li {
  position: relative;
  padding: 24px 22px 22px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.14);
}
.step-no {
  display: block;
  margin-bottom: 14px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
}
.steps h3 { color: #fff; margin-bottom: 6px; }
.steps p { margin: 0; font-size: 0.9rem; color: rgba(242, 242, 240, 0.74); }

/* ── 常见问题 ── */
.section-faq { background: var(--surface); border-block: 1px solid var(--line); }

.faq-list { max-width: 820px; }
.faq-list details {
  border-bottom: 1px solid var(--line);
  padding: 6px 0;
}
.faq-list details[open] { padding-bottom: 14px; }
.faq-list summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 40px 18px 0;
  font-weight: 650;
  position: relative;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--muted);
  transition: transform 0.18s ease;
}
.faq-list details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq-list p { margin: 0; padding-right: 40px; font-size: 0.94rem; color: var(--muted); }

/* ── 联系方式 ── */
.contact-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(28px, 5vw, 68px);
  align-items: start;
  padding: clamp(30px, 5vw, 54px);
  border-radius: 26px;
  border: 1px solid var(--line);
  background: linear-gradient(140deg, var(--accent-soft), var(--bg) 62%);
}
.contact-note { margin: 0; font-size: 0.92rem; color: var(--muted); }

.contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  overflow: hidden;
}
.contact-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 20px;
  padding: 16px 22px;
  border-bottom: 1px solid var(--line);
}
.contact-list li:last-child { border-bottom: 0; }
.contact-list span { font-size: 0.86rem; color: var(--muted); white-space: nowrap; }
.contact-list a, .contact-list strong { font-size: 0.94rem; font-weight: 650; text-align: right; word-break: break-all; }

/* ── 滚动显现 ── */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.5s ease, transform 0.5s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ── 移动端 ── */
@media (max-width: 860px) {
  .about-grid, .contact-inner { grid-template-columns: 1fr; }
  .about-side dd { text-align: left; }
  .about-side dl > div { flex-direction: column; gap: 2px; }
}

@media (max-width: 768px) {
  .section { padding: 46px 0; }
  .section > .container > h2 { margin-bottom: 24px; }
  .card-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .contact-inner { padding: 24px 18px; border-radius: 20px; }
  .contact-list li { flex-direction: column; gap: 2px; padding: 14px 18px; }
  .contact-list a, .contact-list strong { text-align: left; }
  .faq-list p { padding-right: 0; }
}