.page-contact {
  --coop-card: #ffffff;
  --coop-accent: var(--glacier);
  background: var(--paper);
  color: var(--ink);
  overflow-x: hidden;
}

.page-contact img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-contact .coop-crumb {
  padding: 1.25rem 0 0;
}

.page-contact .coop-hero {
  padding: 1rem 0 2.75rem;
}

.page-contact .coop-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
}

.page-contact .coop-hero__title {
  margin: 0.7rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 7vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  max-width: 14em;
}

.page-contact .coop-hero__lead {
  margin: 1.15rem 0 0;
  max-width: 34em;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--graphite);
}

.page-contact .coop-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem 2.25rem;
  margin: 1.9rem 0 0;
  padding: 1.2rem 0 0;
  list-style: none;
  border-top: 1px solid var(--mist);
}

.page-contact .coop-stats__item {
  min-width: 0;
}

.page-contact .coop-stats__num {
  display: block;
  font-size: 1.35rem;
  line-height: 1.1;
  color: var(--maple);
  letter-spacing: -0.01em;
}

.page-contact .coop-stats__label {
  display: block;
  margin-top: 0.35rem;
  max-width: 13em;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--rock);
}

.page-contact .coop-hero__figure {
  margin: 0;
}

.page-contact .coop-hero__cap {
  margin-top: 0.7rem;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--rock);
}

.page-contact .coop-section {
  padding: 2.75rem 0;
  border-top: 1px solid var(--mist);
}

.page-contact .coop-head {
  max-width: 46rem;
  margin-bottom: 1.85rem;
}

.page-contact .coop-head .cpc-title {
  margin: 0.55rem 0 0;
}

.page-contact .coop-head__lead {
  margin: 0.85rem 0 0;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--rock);
}

/* ---------- 四类合作 ---------- */
.page-contact .coop-types {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
}

.page-contact .coop-type {
  background: var(--coop-card);
  border: 1px solid var(--mist);
  border-top: 3px solid var(--coop-accent);
  border-radius: 3px;
  box-shadow: var(--shadow-tile);
  overflow: hidden;
  transition: transform 0.18s var(--ease-out), box-shadow 0.18s var(--ease-out);
}

.page-contact .coop-type:hover {
  box-shadow: var(--shadow-pill);
}

.page-contact .coop-type--maple { --coop-accent: var(--maple); }
.page-contact .coop-type--glacier { --coop-accent: var(--glacier); }
.page-contact .coop-type--green { --coop-accent: var(--aurora-green); }
.page-contact .coop-type--purple { --coop-accent: var(--aurora-purple); }

.page-contact .coop-type__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 0.85rem;
  padding: 1.2rem 1.1rem;
  cursor: pointer;
  list-style: none;
}

.page-contact .coop-type__summary::-webkit-details-marker { display: none; }
.page-contact .coop-type__summary::marker { content: ""; }

.page-contact .coop-type__no {
  padding-top: 0.15rem;
  font-size: 0.9375rem;
  color: var(--coop-accent);
}

.page-contact .coop-type__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.125rem;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.page-contact .coop-type__more {
  position: relative;
  width: 1.35rem;
  height: 1.35rem;
  margin-top: 0.2rem;
  flex: none;
}

.page-contact .coop-type__more::before,
.page-contact .coop-type__more::after {
  content: "";
  position: absolute;
  background: var(--coop-accent);
  transition: transform 0.2s var(--ease-out);
}

.page-contact .coop-type__more::before {
  left: 0;
  right: 0;
  top: 50%;
  height: 1.5px;
  transform: translateY(-50%);
}

.page-contact .coop-type__more::after {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1.5px;
  transform: translateX(-50%);
}

.page-contact .coop-type[open] .coop-type__more::after {
  transform: translateX(-50%) scaleY(0);
}

.page-contact .coop-type__body {
  padding: 1rem 1.1rem 1.3rem;
  border-top: 1px dashed var(--mist);
}

.page-contact .coop-type__lead {
  margin: 0 0 0.7rem;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--graphite);
}

.page-contact .coop-list {
  margin: 0;
}

.page-contact .coop-list__row {
  display: grid;
  gap: 0.2rem;
  padding: 0.55rem 0;
  border-top: 1px solid rgba(199, 203, 210, 0.6);
}

.page-contact .coop-list__row:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-contact .coop-list dt {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--rock);
}

.page-contact .coop-list dd {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--graphite);
}

/* ---------- 五步流程 ---------- */
.page-contact .coop-flow {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.5rem;
}

.page-contact .coop-flow__link {
  display: block;
  padding: 0.6rem 0.75rem;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--mist);
  border-radius: 3px;
  background: var(--coop-card);
  transition: border-color 0.18s var(--ease-out), transform 0.12s var(--ease-out);
}

.page-contact .coop-flow__link:hover {
  border-color: var(--glacier);
}

.page-contact .coop-flow__link:active {
  transform: scale(0.98);
}

.page-contact .coop-flow__no {
  display: inline-block;
  padding-right: 0.4rem;
  font-size: 1.6rem;
  line-height: 1;
  color: var(--maple);
  background: transparent;
}

.page-contact .coop-flow__name {
  display: block;
  margin-top: 0.55rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 0.9375rem;
  letter-spacing: -0.01em;
}

.page-contact .coop-flow__hint {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.75rem;
  color: var(--rock);
}

.page-contact .coop-steps {
  margin-top: 1.5rem;
}

.page-contact .coop-step {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.4rem;
  padding: 1.15rem 0;
  border-top: 1px solid var(--mist);
  scroll-margin-top: 6.5rem;
}

.page-contact .coop-step__id {
  margin: 0;
  font-size: 0.875rem;
  color: var(--maple);
}

.page-contact .coop-step__body p {
  margin: 0.4rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--graphite);
  max-width: 44em;
}

.page-contact .coop-step__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
}

.page-contact .coop-step__meta {
  margin: 0.35rem 0 0;
  display: grid;
  gap: 0.35rem;
}

.page-contact .coop-step__meta dt {
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--rock);
}

.page-contact .coop-step__meta dd {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--graphite);
}

.page-contact .coop-step__meta > div {
  padding-left: 0.7rem;
  border-left: 2px solid var(--ice);
}

/* ---------- 批量部署 ---------- */
.page-contact .coop-deploy {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.75rem;
}

.page-contact .coop-deploy__figure {
  margin: 0;
}

.page-contact .coop-deploy__cap {
  margin-top: 0.7rem;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--rock);
}

.page-contact .coop-deploy__lead {
  margin: 0.85rem 0 1.1rem;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--rock);
  max-width: 34em;
}

.page-contact .coop-bullets {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.7rem;
}

.page-contact .coop-bullets li {
  position: relative;
  padding-left: 1.15rem;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--graphite);
}

.page-contact .coop-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66rem;
  width: 6px;
  height: 6px;
  background: var(--maple);
  border-radius: 1px;
}

.page-contact .coop-deploy__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin: 1.4rem 0 0;
}

/* ---------- 适配共建 ---------- */
.page-contact .coop-chain {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .coop-chain__item {
  position: relative;
  margin-left: 0.3rem;
  padding: 0.15rem 0 1.35rem 1.75rem;
  border-left: 1px solid var(--mist);
}

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

.page-contact .coop-chain__item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 0.55rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--glacier);
}

.page-contact .coop-chain__item:first-child::before {
  border-color: var(--maple);
  background: var(--maple);
}

.page-contact .coop-chain__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1rem;
  letter-spacing: -0.01em;
}

.page-contact .coop-chain__item p {
  margin: 0.35rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--rock);
  max-width: 42em;
}

/* ---------- 联系区 ---------- */
.page-contact .coop-contact {
  padding: 2.75rem 0;
  background: var(--ice);
  border-top: 1px solid var(--mist);
  border-bottom: 1px solid var(--mist);
  scroll-margin-top: 6.5rem;
}

.page-contact .coop-contact__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.75rem;
}

.page-contact .coop-contact__text {
  margin: 0.85rem 0 0;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--graphite);
  max-width: 34em;
}

.page-contact .coop-contact__note {
  margin: 0.9rem 0 0;
  padding-left: 0.85rem;
  border-left: 2px solid var(--glacier);
  font-size: 0.8125rem;
  line-height: 1.75;
  color: var(--rock);
  max-width: 34em;
}

.page-contact .coop-contact__card {
  background: var(--paper);
  border: 1px solid var(--mist);
  border-radius: 3px;
  box-shadow: var(--shadow-tile);
  padding: 0.4rem 1.15rem;
}

.page-contact .coop-contact__row {
  padding: 1.05rem 0;
  border-bottom: 1px solid var(--mist);
}

.page-contact .coop-contact__row:last-child {
  border-bottom: 0;
}

.page-contact .coop-contact__label {
  display: block;
  margin-bottom: 0.45rem;
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--rock);
}

.page-contact .coop-contact__value {
  display: block;
  font-size: clamp(1.15rem, 5.2vw, 1.65rem);
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-contact .coop-contact__value--mail {
  font-size: clamp(0.875rem, 3.6vw, 1.125rem);
  color: var(--glacier);
  word-break: break-all;
}

.page-contact .coop-contact__value--addr {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.9375rem;
  line-height: 1.7;
  letter-spacing: 0;
}

/* ---------- 常见问题 ---------- */
.page-contact .coop-faq {
  border-top: 1px solid var(--mist);
}

.page-contact .coop-faq__item {
  border-bottom: 1px solid var(--mist);
}

.page-contact .coop-faq__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.05rem 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9875rem;
  line-height: 1.5;
}

.page-contact .coop-faq__q::-webkit-details-marker { display: none; }
.page-contact .coop-faq__q::marker { content: ""; }

.page-contact .coop-faq__icon {
  position: relative;
  flex: none;
  width: 0.85rem;
  height: 0.85rem;
}

.page-contact .coop-faq__icon::before,
.page-contact .coop-faq__icon::after {
  content: "";
  position: absolute;
  background: var(--maple);
  transition: transform 0.2s var(--ease-out);
}

.page-contact .coop-faq__icon::before {
  left: 0;
  right: 0;
  top: 50%;
  height: 1.5px;
  transform: translateY(-50%);
}

.page-contact .coop-faq__icon::after {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1.5px;
  transform: translateX(-50%);
}

.page-contact .coop-faq__item[open] .coop-faq__icon::after {
  transform: translateX(-50%) scaleY(0);
}

.page-contact .coop-faq__a p {
  margin: 0 0 1.1rem;
  padding-right: 1.5rem;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--rock);
  max-width: 52em;
}

.page-contact .coop-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.75rem;
}

/* ---------- 断点 ---------- */
@media (min-width: 560px) {
  .page-contact .coop-list__row {
    grid-template-columns: 5.75em minmax(0, 1fr);
    gap: 0.9rem;
    align-items: baseline;
  }
}

@media (min-width: 760px) {
  .page-contact .coop-crumb { padding-top: 1.6rem; }
  .page-contact .coop-hero { padding: 1.5rem 0 4rem; }
  .page-contact .coop-section { padding: 4rem 0; }
  .page-contact .coop-contact { padding: 4rem 0; }

  .page-contact .coop-stats { gap: 1.5rem 3rem; }
  .page-contact .coop-stats__num { font-size: 1.6rem; }

  .page-contact .coop-types {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.15rem;
  }

  .page-contact .coop-flow {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0.6rem;
    padding-top: 0.25rem;
  }

  .page-contact .coop-flow::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 2.15rem;
    height: 1px;
    background: linear-gradient(90deg, var(--aurora-purple), var(--glacier) 48%, var(--aurora-green));
    opacity: 0.5;
  }

  .page-contact .coop-flow__step:nth-child(even) {
    transform: translateY(16px);
  }

  .page-contact .coop-flow__link {
    position: relative;
    z-index: 1;
  }

  .page-contact .coop-step {
    grid-template-columns: 3rem minmax(0, 1fr) 11rem;
    gap: 1.5rem;
    align-items: start;
    padding: 1.35rem 0;
  }

  .page-contact .coop-step__meta {
    margin-top: 0.1rem;
    gap: 0.55rem;
  }
}

@media (min-width: 900px) {
  .page-contact .coop-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 3.25rem;
    align-items: end;
  }

  .page-contact .coop-deploy {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 3rem;
    align-items: start;
  }

  .page-contact .coop-contact__inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 3.25rem;
    align-items: start;
  }

  .page-contact .coop-type__summary { padding: 1.35rem 1.35rem; }
  .page-contact .coop-type__body { padding: 1.05rem 1.35rem 1.45rem; }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .coop-type,
  .page-contact .coop-flow__link,
  .page-contact .coop-type__more::before,
  .page-contact .coop-type__more::after,
  .page-contact .coop-faq__icon::before,
  .page-contact .coop-faq__icon::after {
    transition: none;
  }

  .page-contact .coop-flow__step:nth-child(even) {
    transform: none;
  }
}
<<<END>>>