.page-contact {
  --coop-gap: clamp(1.5rem, 4vw, 3rem);
  --coop-pad: clamp(1.1rem, 2.6vw, 1.75rem);
  --coop-line: rgba(200, 165, 74, .18);
}

/* 面包屑呼吸 */
.page-contact .breadcrumb {
  padding-block: 1.25rem .5rem;
}

/* ---------- 首屏 ---------- */
.page-contact .coop-hero {
  padding-top: clamp(.5rem, 2vw, 1.5rem);
}

.page-contact .coop-hero__grid {
  display: grid;
  gap: var(--coop-gap);
}

.page-contact .coop-hero__lead .display {
  margin: .6rem 0 1rem;
}

.page-contact .coop-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.5rem;
}

.page-contact .coop-hero__card {
  position: relative;
  padding: var(--coop-pad);
  overflow: hidden;
}

.page-contact .coop-hero__card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), rgba(200, 165, 74, 0) 72%);
}

.page-contact .coop-hero__card-title {
  font-size: .95rem;
  font-weight: 700;
  letter-spacing: .02em;
  margin: 0 0 1rem;
  color: var(--gold-2);
}

.page-contact .coop-contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .85rem;
}

.page-contact .coop-contact-list li {
  display: grid;
  gap: .28rem;
  padding-bottom: .85rem;
  border-bottom: 1px solid var(--hair);
}

.page-contact .coop-contact-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .coop-contact-list__k {
  font-size: .64rem;
  letter-spacing: .18em;
  color: var(--gold);
}

.page-contact .coop-contact-list__v {
  font-size: .92rem;
  line-height: 1.6;
  color: var(--text);
  word-break: break-word;
}

.page-contact a.coop-contact-list__v {
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

.page-contact a.coop-contact-list__v:hover {
  color: var(--gold-2);
  border-bottom-color: var(--line-2);
}

.page-contact .coop-hero__note {
  margin: 1.15rem 0 0;
  font-size: .8rem;
  line-height: 1.7;
  color: var(--text-3);
  border-top: 1px solid var(--hair);
  padding-top: .9rem;
}

/* ---------- 房间分类轨道 ---------- */
.page-contact .coop-rail {
  margin-top: clamp(2.25rem, 6vw, 4rem);
  border-block: 1px solid var(--hair);
  background: linear-gradient(180deg, rgba(28, 107, 88, .12), rgba(4, 11, 9, 0));
}

.page-contact .coop-rail__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.1rem .55rem;
}

.page-contact .coop-rail__hint {
  font-size: .76rem;
}

.page-contact .coop-rail__scroll {
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: 1.1rem;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-contact .coop-rail__list {
  list-style: none;
  margin: 0;
  padding-inline: clamp(1.1rem, 4vw, 3.4rem);
  display: flex;
  align-items: center;
  gap: .55rem;
  width: max-content;
}

.page-contact .coop-rail__list .chip {
  white-space: nowrap;
  padding-block: .38rem;
}

/* ---------- 合作方向 ---------- */
.page-contact .coop-channels__lede {
  max-width: 52ch;
}

.page-contact .coop-filters {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: 1.75rem;
}

.page-contact .coop-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 252px), 1fr));
}

.page-contact .coop-card {
  position: relative;
  padding: var(--coop-pad);
  display: grid;
  align-content: start;
  gap: .72rem;
  overflow: hidden;
}

.page-contact .coop-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gold);
}

.page-contact .coop-card[data-tags~="内容"]::before {
  background: linear-gradient(180deg, var(--jade), var(--cyan));
}

.page-contact .coop-card[data-tags~="赛事"]::before {
  background: linear-gradient(180deg, var(--red), var(--gold));
}

.page-contact .coop-card[data-tags~="技术"]::before {
  background: linear-gradient(180deg, var(--cyan), var(--jade));
}

.page-contact .coop-card__title {
  font-size: 1.08rem;
  line-height: 1.35;
  margin: 0;
}

.page-contact .coop-card__desc {
  margin: 0;
  font-size: .9rem;
  line-height: 1.78;
  color: var(--text-2);
}

.page-contact .coop-card__fit {
  margin: 0;
  padding-top: .75rem;
  border-top: 1px solid var(--hair);
  font-size: .78rem;
  line-height: 1.6;
  color: var(--text-3);
}

/* ---------- 场景错位区 ---------- */
.page-contact .coop-scene__grid {
  display: grid;
  gap: var(--coop-gap);
}

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

.page-contact .coop-scene__list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
}

.page-contact .coop-scene__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .95rem;
  padding: 1.05rem 0;
  border-top: 1px solid var(--hair);
}

.page-contact .coop-scene__list li:last-child {
  border-bottom: 1px solid var(--hair);
}

.page-contact .coop-scene__num {
  font-size: .8rem;
  color: var(--gold);
  letter-spacing: .08em;
  padding-top: .2rem;
}

.page-contact .coop-scene__pain {
  margin: 0 0 .4rem;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--text);
}

.page-contact .coop-scene__fix {
  margin: 0;
  font-size: .88rem;
  line-height: 1.75;
  color: var(--text-2);
}

/* ---------- 流程 ---------- */
.page-contact .coop-flow__lede {
  max-width: 54ch;
}

.page-contact .coop-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
  counter-reset: coop-step;
}

.page-contact .coop-step {
  position: relative;
  padding: var(--coop-pad);
  border: 1px solid var(--hair);
  border-radius: var(--r-md);
  background:
    linear-gradient(180deg, rgba(16, 42, 35, .55), rgba(7, 19, 16, .55));
  display: grid;
  align-content: start;
  gap: .6rem;
}

.page-contact .coop-step::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(200, 165, 74, .55), rgba(200, 165, 74, 0) 70%);
}

.page-contact .coop-step__num {
  font-size: 1.7rem;
  line-height: 1;
  color: var(--gold);
  letter-spacing: .04em;
}

.page-contact .coop-step__title {
  margin: 0;
  font-size: 1.02rem;
  line-height: 1.4;
}

.page-contact .coop-step__desc {
  margin: 0;
  font-size: .86rem;
  line-height: 1.78;
  color: var(--text-2);
}

/* ---------- 素材工具箱 ---------- */
.page-contact .coop-kit__grid {
  display: grid;
  gap: var(--coop-gap);
}

.page-contact .coop-kit__links {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
  margin-top: 1.5rem;
}

.page-contact .coop-kit__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .8rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr));
}

.page-contact .coop-kit__item {
  padding: var(--coop-pad);
  border: 1px solid var(--coop-line);
  border-radius: var(--r-md);
  background: rgba(4, 11, 9, .55);
  display: grid;
  align-content: start;
  gap: .55rem;
}

.page-contact .coop-kit__item-title {
  margin: 0;
  font-size: .98rem;
  line-height: 1.4;
}

.page-contact .coop-kit__item-desc {
  margin: 0;
  font-size: .84rem;
  line-height: 1.75;
  color: var(--text-3);
}

/* ---------- 联系与 CTA ---------- */
.page-contact .coop-cta {
  display: grid;
  gap: clamp(1.4rem, 4vw, 2.6rem);
  padding: clamp(1.6rem, 5vw, 3.2rem);
  border: 1px solid var(--line-2);
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(240, 64, 46, .16), rgba(4, 11, 9, 0) 58%),
    radial-gradient(90% 120% at 0% 100%, rgba(37, 222, 208, .10), rgba(4, 11, 9, 0) 60%),
    linear-gradient(140deg, rgba(28, 107, 88, .34), rgba(4, 11, 9, .92));
  box-shadow: var(--shadow-2);
}

.page-contact .coop-cta__text {
  margin: .8rem 0 0;
  max-width: 46ch;
  font-size: .96rem;
  line-height: 1.85;
  color: var(--text-2);
}

.page-contact .coop-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.6rem;
}

.page-contact .coop-meta {
  margin: 0;
  display: grid;
  gap: .85rem;
}

.page-contact .coop-meta__row {
  display: grid;
  gap: .25rem;
  padding-bottom: .85rem;
  border-bottom: 1px solid var(--hair);
}

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

.page-contact .coop-meta dt {
  font-size: .64rem;
  letter-spacing: .18em;
  color: var(--gold);
  text-transform: uppercase;
}

.page-contact .coop-meta dd {
  margin: 0;
  font-size: .9rem;
  line-height: 1.68;
  color: var(--text);
  word-break: break-word;
}

.page-contact .coop-cta__note {
  margin: 1.1rem 0 0;
  font-size: .78rem;
  line-height: 1.7;
  color: var(--text-3);
}

/* ---------- 收尾视觉 ---------- */
.page-contact .coop-figure {
  padding-bottom: clamp(2rem, 6vw, 4rem);
}

.page-contact .coop-media--wide img {
  filter: saturate(.85) contrast(1.05);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .coop-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .coop-cta {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-contact .coop-hero__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(290px, .7fr);
    align-items: start;
    gap: clamp(2rem, 5vw, 4rem);
  }

  .page-contact .coop-hero__card {
    margin-top: 1.6rem;
  }

  .page-contact .coop-scene__grid {
    grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr);
    align-items: center;
    gap: clamp(2rem, 5vw, 3.6rem);
  }

  .page-contact .coop-kit__grid {
    grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
    align-items: start;
    gap: clamp(2rem, 5vw, 3.6rem);
  }
}

@media (min-width: 1080px) {
  .page-contact .coop-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
<<<END>>>