.page-contact {
  --coop-cut: 22px;
  --coop-panel-bg: linear-gradient(158deg, rgba(20, 52, 40, 0.72), rgba(13, 23, 21, 0.95));
  padding-bottom: clamp(32px, 7vw, 88px);
  overflow-x: clip;
}

.page-contact .breadcrumb {
  padding-top: clamp(14px, 3vw, 24px);
}

/* ---------- Hero ---------- */
.page-contact .coop-hero {
  position: relative;
  padding: clamp(18px, 4vw, 36px) 0 clamp(34px, 6vw, 72px);
  border-bottom: 1px solid var(--line-faint);
}

.page-contact .coop-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -18%;
  width: min(660px, 82vw);
  height: min(660px, 82vw);
  background: radial-gradient(circle at 55% 45%, rgba(201, 255, 59, 0.16), rgba(201, 255, 59, 0) 64%);
  pointer-events: none;
}

.page-contact .coop-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-contact .coop-hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.35rem, 8.4vw, 5.4rem);
  line-height: 1.02;
  letter-spacing: 0.01em;
  color: var(--chalk);
  margin: 0.5rem 0 1rem;
  text-wrap: balance;
}

.page-contact .coop-hero__mark {
  color: var(--lime);
  display: inline-block;
  border-bottom: 4px solid var(--orange);
  padding-bottom: 2px;
}

.page-contact .coop-hero__lead .lede {
  max-width: 58ch;
}

.page-contact .coop-hero__quick {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 1rem 0 0;
  border-top: 1px solid var(--line-faint);
  display: grid;
  gap: 0.7rem;
}

.page-contact .coop-hero__quick li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.65rem;
  font-size: 0.95rem;
  color: var(--mist);
}

.page-contact .coop-hero__k {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--mint);
  min-width: 3.4em;
}

.page-contact .coop-hero__quick a {
  color: var(--chalk);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 1px;
  word-break: break-all;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .coop-hero__quick a:hover,
.page-contact .coop-hero__quick a:focus-visible {
  color: var(--lime);
  border-color: var(--lime);
}

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

.page-contact .media-frame__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .coop-hero__cap {
  margin: 0.7rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--mist);
}

/* ---------- 四类合作 ---------- */
.page-contact .coop-kinds__head {
  max-width: 62ch;
}

.page-contact .coop-kinds h2,
.page-contact .coop-steps h2,
.page-contact .coop-reach h2,
.page-contact .coop-prep h2,
.page-contact .coop-faq__head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 5vw, 3rem);
  line-height: 1.08;
  color: var(--chalk);
  margin: 0.4rem 0 0.8rem;
  text-wrap: balance;
}

.page-contact .coop-kinds__head p,
.page-contact .coop-prep__head p {
  color: var(--mist);
  font-size: 0.98rem;
  line-height: 1.8;
  margin: 0;
}

.page-contact .coop-kinds__body {
  margin-top: clamp(20px, 3vw, 34px);
}

.page-contact .coop-tree__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.page-contact .coop-tree__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "num label"
    "num tag";
  align-items: center;
  gap: 0 0.7rem;
  padding: 12px 14px;
  border: 1px solid var(--line-faint);
  background: rgba(13, 23, 21, 0.72);
  color: var(--chalk);
  text-decoration: none;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-contact .coop-tree__link:hover,
.page-contact .coop-tree__link:focus-visible {
  border-color: var(--lime);
  background: rgba(20, 52, 40, 0.9);
  transform: translateY(-2px);
}

.page-contact .coop-tree__num {
  grid-area: num;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--orange);
}

.page-contact .coop-tree__label {
  grid-area: label;
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.4;
}

.page-contact .coop-tree__tag {
  grid-area: tag;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-contact .coop-panels {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
  margin-top: clamp(18px, 3vw, 26px);
}

.page-contact .coop-panel {
  padding: clamp(18px, 3vw, 28px);
  background: var(--coop-panel-bg);
  border: 1px solid var(--line-faint);
  border-left: 3px solid var(--lime);
  scroll-margin-top: 104px;
  transition: border-color 0.3s var(--ease);
}

.page-contact .coop-panel:target {
  border-left-color: var(--orange);
}

.page-contact .coop-panel__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.2rem 0.8rem;
  align-items: baseline;
  margin-bottom: 0.9rem;
}

.page-contact .coop-panel__idx {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--orange);
  align-self: start;
}

.page-contact .coop-panel__head h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 3.4vw, 1.7rem);
  color: var(--chalk);
  letter-spacing: 0.02em;
}

.page-contact .coop-panel__who {
  grid-column: 2;
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--mist);
}

.page-contact .coop-panel__meta {
  margin: 0;
  display: grid;
  gap: 0.7rem;
}

.page-contact .coop-panel__row {
  display: grid;
  gap: 0.2rem;
}

.page-contact .coop-panel__row dt {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--mint);
}

.page-contact .coop-panel__row dd {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--chalk);
  opacity: 0.92;
}

/* ---------- 推进步骤 ---------- */
.page-contact .coop-steps__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-contact .coop-steps__list {
  list-style: none;
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 0;
  display: grid;
}

.page-contact .coop-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0 1rem;
  padding: 1rem 0;
  border-top: 1px solid var(--line-faint);
}

.page-contact .coop-step:last-child {
  border-bottom: 1px solid var(--line-faint);
}

.page-contact .coop-step__num {
  display: grid;
  place-items: center;
  width: 2.15rem;
  height: 2.15rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--lime);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  background: rgba(20, 52, 40, 0.6);
}

.page-contact .coop-step h3 {
  margin: 0 0 0.28rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.03em;
  color: var(--chalk);
}

.page-contact .coop-step p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.8;
  color: var(--mist);
}

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

/* ---------- 联系渠道 ---------- */
.page-contact .coop-reach__grid {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
  align-items: start;
}

.page-contact .coop-reach__intro p {
  color: var(--mist);
  font-size: 0.97rem;
  line-height: 1.85;
  margin: 0 0 0.8rem;
  max-width: 46ch;
}

.page-contact .coop-desk {
  position: relative;
  padding: clamp(20px, 3vw, 32px);
  background: var(--coop-panel-bg);
  border: 1px solid var(--line);
}

.page-contact .coop-desk::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 72px;
  height: 3px;
  background: linear-gradient(90deg, var(--lime), var(--orange));
}

.page-contact .coop-desk__title {
  margin: 0 0 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  color: var(--mint);
}

.page-contact .coop-desk__list {
  margin: 0;
  display: grid;
}

.page-contact .coop-desk__row {
  display: grid;
  gap: 0.25rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--line-faint);
}

.page-contact .coop-desk__row dt {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--mint);
}

.page-contact .coop-desk__row dd {
  margin: 0;
  font-size: 0.97rem;
  line-height: 1.7;
  color: var(--chalk);
  word-break: break-word;
}

.page-contact .coop-desk__row dd a {
  color: var(--chalk);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .coop-desk__row dd a:hover,
.page-contact .coop-desk__row dd a:focus-visible {
  color: var(--lime);
  border-color: var(--lime);
}

.page-contact .coop-desk__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 1.2rem;
}

/* ---------- 准备清单 ---------- */
.page-contact .coop-prep__head {
  max-width: 62ch;
}

.page-contact .coop-prep__list {
  list-style: none;
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}

.page-contact .coop-prep__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.85rem;
  padding: 14px 16px;
  border: 1px solid var(--line-faint);
  background: rgba(13, 23, 21, 0.62);
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}

.page-contact .coop-prep__item:hover {
  border-color: var(--line);
  background: rgba(20, 52, 40, 0.6);
}

.page-contact .coop-prep__n {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--orange);
  padding-top: 2px;
}

.page-contact .coop-prep__item h3 {
  margin: 0 0 0.22rem;
  font-size: 0.98rem;
  color: var(--chalk);
  letter-spacing: 0.01em;
}

.page-contact .coop-prep__item p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 常见问题 ---------- */
.page-contact .coop-faq__head {
  max-width: 62ch;
}

.page-contact .coop-faq {
  margin-top: clamp(18px, 3vw, 26px);
  border-top: 1px solid var(--line-faint);
}

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

.page-contact .coop-faq__q {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 1rem 0.2rem;
  cursor: pointer;
  color: var(--chalk);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.55;
  list-style: none;
}

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

.page-contact .coop-faq__q::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.2rem;
  line-height: 1;
  color: var(--lime);
  flex: none;
}

.page-contact .coop-faq__item[open] .coop-faq__q::after {
  content: "−";
  color: var(--orange);
}

.page-contact .coop-faq__q:hover {
  color: var(--lime);
}

.page-contact .coop-faq__a {
  margin: 0;
  padding: 0 0.2rem 1.1rem;
  max-width: 68ch;
  font-size: 0.93rem;
  line-height: 1.82;
  color: var(--mist);
}

/* ---------- 继续了解 ---------- */
.page-contact .coop-more__grid {
  display: grid;
  gap: 12px;
  margin-top: 0.9rem;
}

.page-contact .coop-more__link {
  display: block;
  padding: 16px;
  border: 1px solid var(--line-faint);
  background: rgba(20, 52, 40, 0.34);
  color: var(--chalk);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 600;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-contact .coop-more__link span {
  display: block;
  margin-top: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  font-weight: 400;
  color: var(--mint);
}

.page-contact .coop-more__link:hover,
.page-contact .coop-more__link:focus-visible {
  border-color: var(--lime);
  background: rgba(20, 52, 40, 0.85);
  transform: translateY(-2px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-contact .coop-desk__row {
    grid-template-columns: 7.5rem minmax(0, 1fr);
    gap: 1rem;
    align-items: baseline;
  }

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

@media (min-width: 760px) {
  .page-contact .coop-hero__quick {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem 1.4rem;
  }

  .page-contact .coop-hero__quick li {
    flex-direction: column;
    gap: 0.3rem;
    align-items: flex-start;
  }

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

  .page-contact .coop-more__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .coop-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-contact .coop-kinds__body {
    display: grid;
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: clamp(24px, 4vw, 48px);
    align-items: start;
  }

  .page-contact .coop-tree {
    position: sticky;
    top: 104px;
  }

  .page-contact .coop-tree__list {
    grid-template-columns: 1fr;
  }

  .page-contact .coop-tree__link:hover {
    transform: translateX(4px);
  }

  .page-contact .coop-panels {
    margin-top: 0;
  }

  .page-contact .coop-panel__meta {
    gap: 0.85rem;
  }
}

@media (min-width: 960px) {
  .page-contact .coop-steps__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 5vw, 60px);
  }

  .page-contact .coop-reach__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: clamp(32px, 5vw, 56px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .coop-tree__link,
  .page-contact .coop-more__link,
  .page-contact .coop-prep__item,
  .page-contact .coop-panel {
    transition: none;
  }

  .page-contact .coop-tree__link:hover,
  .page-contact .coop-more__link:hover {
    transform: none;
  }
}
<<<END>>>