.page-contact {
  --contact-gap: 22px;
  display: block;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  display: grid;
  gap: var(--contact-gap);
  padding: 18px 0 34px;
}

.page-contact .hero-copy { min-width: 0; }

.page-contact .hero-copy .eyebrow { margin: 14px 0 0; }

.page-contact .contact-hero h1 {
  margin: 10px 0 0;
  font-size: clamp(2rem, 8.4vw, 3.4rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  max-width: 18ch;
}

.page-contact .lede {
  margin: 16px 0 0;
  max-width: 56ch;
  font-size: 1rem;
  line-height: 1.78;
}

.page-contact .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.page-contact .hero-facts {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 24px 0 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--line);
}

.page-contact .hero-facts li {
  display: flex;
  align-items: baseline;
  gap: 7px;
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: 0.01em;
}

.page-contact .fact-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  color: var(--lime);
}

.page-contact .hero-media {
  position: relative;
  min-width: 0;
}

.page-contact .hero-img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  object-fit: cover;
  filter: saturate(0.86) contrast(1.05);
}

.page-contact .hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  background: linear-gradient(200deg, rgba(5, 16, 13, 0.55), rgba(5, 16, 13, 0) 58%);
  pointer-events: none;
}

/* ---------- 章节标题 ---------- */
.page-contact .section-head {
  display: grid;
  gap: 10px;
  margin-bottom: 22px;
}

.page-contact .section-head .eyebrow { margin: 0; }

.page-contact .section-title {
  font-size: clamp(1.5rem, 6vw, 2.5rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 0;
  max-width: 22ch;
}

.page-contact .section-sub {
  margin: 0;
  max-width: 60ch;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 三类合作卡片 ---------- */
.page-contact .coop-section {
  padding: 30px 0 8px;
  border-top: 1px solid var(--line);
}

.page-contact .coop-grid {
  display: grid;
  gap: 14px;
}

.page-contact .coop-card {
  position: relative;
  min-width: 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 18px 16px;
  overflow: hidden;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .coop-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--sand);
}

.page-contact .coop-card--mint::before { background: var(--mint); }
.page-contact .coop-card--lime::before { background: var(--lime); }

.page-contact .coop-card:hover,
.page-contact .coop-card[open] {
  border-color: var(--mint);
  transform: translateY(-2px);
}

.page-contact .coop-card summary {
  display: block;
  cursor: pointer;
  list-style: none;
}

.page-contact .coop-card summary::-webkit-details-marker { display: none; }

.page-contact .coop-index {
  display: inline-block;
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--sand);
}

.page-contact .coop-title {
  margin: 10px 0 8px;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
  line-height: 1.3;
}

.page-contact .coop-line {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--ink);
}

.page-contact .coop-points {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-contact .coop-points li {
  position: relative;
  padding-left: 14px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

.page-contact .coop-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--mint);
}

.page-contact .coop-card--sand .coop-points li::before { background: var(--sand); }
.page-contact .coop-card--lime .coop-points li::before { background: var(--lime); }

.page-contact .coop-more {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--lime);
}

.page-contact .coop-more::after { content: "展开要点 +"; }
.page-contact .coop-card[open] .coop-more::after { content: "收起 −"; }

.page-contact .coop-body {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.78;
  color: var(--muted);
}

.page-contact .coop-body p { margin: 0 0 8px; }
.page-contact .coop-body p:last-child { margin-bottom: 0; }

/* ---------- 下半页双栏 ---------- */
.page-contact .contact-body {
  display: grid;
  gap: 26px;
  margin-top: 42px;
}

.page-contact .flow-section { min-width: 0; }

/* ---------- 流程时间轴 ---------- */
.page-contact .timeline {
  display: block;
  margin-top: 6px;
}

.page-contact .timeline-item {
  position: relative;
  border: 0;
  border-left: 1px solid var(--line);
  padding: 0 0 20px 20px;
  background: transparent;
}

.page-contact .timeline-item:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.page-contact .timeline-item::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 7px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--muted);
  transition: background 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-contact .timeline-item[open]::before {
  background: var(--lime);
  box-shadow: 0 0 0 4px rgba(198, 255, 60, 0.14);
}

.page-contact .timeline-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 10px;
  cursor: pointer;
  list-style: none;
  padding: 2px 0 0;
}

.page-contact .timeline-head::-webkit-details-marker { display: none; }

.page-contact .timeline-stamp {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--sand);
}

.page-contact .tl-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.page-contact .tl-meta {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11.5px;
  color: var(--muted);
  margin-left: auto;
}

.page-contact .timeline-body {
  padding-top: 8px;
  border-top: 0;
}

.page-contact .timeline-body p {
  margin: 0;
  max-width: 58ch;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 侧栏 ---------- */
.page-contact .contact-aside {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
}

.page-contact .aside-sticky {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-contact .aside-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 18px;
  min-width: 0;
}

.page-contact .aside-card .eyebrow { margin: 0 0 8px; }

.page-contact .reach-title {
  margin: 0 0 4px;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.35;
  color: var(--ink);
}

.page-contact .reach-row {
  padding: 13px 0;
  border-top: 1px solid var(--line);
}

.page-contact .reach-row:first-of-type { margin-top: 12px; }

.page-contact .reach-key {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--sand);
  margin-bottom: 5px;
}

.page-contact .reach-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.page-contact .reach-value {
  font-size: 13.5px;
  color: var(--ink);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .reach-address {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink);
}

.page-contact .reach-note {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 准备清单 ---------- */
.page-contact .prep-list {
  list-style: none;
  display: grid;
  gap: 10px;
  margin: 14px 0 0;
  padding: 0;
}

.page-contact .prep-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink);
  cursor: pointer;
}

.page-contact .prep-box {
  appearance: none;
  -webkit-appearance: none;
  position: relative;
  flex: 0 0 auto;
  width: 17px;
  height: 17px;
  margin: 2px 0 0;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: transparent;
  cursor: pointer;
  transition: background 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-contact .prep-box:checked {
  background: var(--lime);
  border-color: var(--lime);
}

.page-contact .prep-box:checked::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 4px;
  height: 9px;
  border-right: 2px solid #05100D;
  border-bottom: 2px solid #05100D;
  transform: rotate(42deg);
}

.page-contact .prep-box:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

.page-contact .prep-box:checked + .prep-text { color: var(--muted); }

.page-contact .aside-img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  object-fit: cover;
}

/* ---------- 回复与后续 ---------- */
.page-contact .followup {
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.page-contact .followup-head {
  display: grid;
  gap: 8px;
}

.page-contact .followup-head .eyebrow { margin: 0; }

.page-contact .followup-grid {
  display: grid;
  gap: 18px;
  margin-top: 24px;
}

.page-contact .followup-item {
  border-left: 2px solid var(--mint);
  padding-left: 14px;
  min-width: 0;
}

.page-contact .followup-item:nth-child(2) { border-left-color: var(--sand); }
.page-contact .followup-item:nth-child(3) { border-left-color: var(--lime); }

.page-contact .followup-item h3 {
  margin: 0 0 6px;
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-contact .followup-item p {
  margin: 0;
  font-size: 13px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 内链条 ---------- */
.page-contact .link-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 30px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
}

.page-contact .link-strip a {
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--line);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-contact .link-strip a:hover,
.page-contact .link-strip a:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-contact .contact-body { gap: 30px; }
  .page-contact .followup-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
}

@media (min-width: 820px) {
  .page-contact .coop-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
  .page-contact .followup-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: 34px;
    padding: 26px 0 52px;
  }
  .page-contact .hero-media { align-self: stretch; }
  .page-contact .hero-img { height: 100%; min-height: 340px; object-fit: cover; }
  .page-contact .hero-copy .eyebrow { margin-top: 20px; }
}

@media (min-width: 980px) {
  .page-contact .contact-body {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 44px;
    align-items: start;
    margin-top: 50px;
  }
  .page-contact .aside-sticky { position: sticky; top: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .coop-card,
  .page-contact .timeline-item::before,
  .page-contact .prep-box,
  .page-contact .link-strip a {
    transition: none;
  }
  .page-contact .coop-card:hover,
  .page-contact .coop-card[open] { transform: none; }
}
<<<END>>>