.page-contact {
  --contact-gap: clamp(2.8rem, 6vw, 4.8rem);
}

.page-contact .crumbs {
  padding-top: 1.1rem;
  padding-bottom: .4rem;
}

/* ---------- 封面 ---------- */
.page-contact .coop-cover {
  position: relative;
  overflow: hidden;
  margin-top: .8rem;
  padding: clamp(2rem, 5vw, 3.6rem) 0 clamp(2.4rem, 5.5vw, 4rem);
  border-radius: var(--r-lg);
  background: linear-gradient(168deg, var(--ink) 0%, var(--ink-deep) 100%);
  color: var(--paper);
}

.page-contact .coop-cover::before {
  content: "";
  position: absolute;
  right: -14%;
  bottom: -46%;
  width: 40rem;
  height: 40rem;
  background: radial-gradient(circle, rgba(183, 121, 60, 0.3), transparent 66%);
  pointer-events: none;
}

.page-contact .coop-cover-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.6rem, 4vw, 2.8rem);
  align-items: end;
}

.page-contact .coop-cover-copy h1 {
  margin: .55rem 0 1rem;
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(1.95rem, 5.4vw, 3.5rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .coop-lede {
  max-width: 34em;
  margin: 0;
  font-size: clamp(.98rem, 1.1vw, 1.08rem);
  line-height: 1.82;
  color: rgba(246, 241, 231, 0.82);
}

.page-contact .coop-facts {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  display: grid;
  gap: .5rem;
}

.page-contact .coop-facts li {
  display: flex;
  gap: .7rem;
  align-items: baseline;
  padding-top: .55rem;
  border-top: 1px solid rgba(216, 167, 106, 0.22);
  font-size: .88rem;
  line-height: 1.7;
  color: rgba(246, 241, 231, 0.74);
}

.page-contact .coop-facts .mono {
  flex: none;
  font-size: .95rem;
  color: var(--copper-light);
}

.page-contact .coop-cover-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.7rem;
}

.page-contact .coop-cover-actions .btn-ghost {
  border-color: rgba(216, 167, 106, 0.55);
  color: var(--paper);
}

.page-contact .coop-cover-actions .btn-ghost:hover {
  background: rgba(216, 167, 106, 0.14);
  border-color: var(--copper-light);
}

.page-contact .coop-cover-media {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: var(--r-lg);
  border: 1px solid rgba(216, 167, 106, 0.36);
  background: var(--ink-deep);
}

.page-contact .coop-cover-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.page-contact .coop-cover-media figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: .7rem 1rem;
  font-size: .72rem;
  letter-spacing: .12em;
  color: rgba(246, 241, 231, 0.88);
  background: linear-gradient(transparent, rgba(11, 36, 31, 0.92));
}

/* ---------- 路线图 ---------- */
.page-contact .coop-route {
  position: relative;
  margin-top: clamp(2rem, 5vw, 3.2rem);
  padding-top: clamp(1.3rem, 3vw, 1.9rem);
  border-top: 1px solid rgba(216, 167, 106, 0.3);
}

.page-contact .coop-route-title {
  margin: 0 0 1.2rem;
  font-family: var(--sans);
  font-size: .7rem;
  font-weight: 500;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--copper-light);
}

.page-contact .coop-route-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
}

.page-contact .coop-route-list li {
  position: relative;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(216, 167, 106, 0.24);
}

.page-contact .coop-route-list li::before {
  content: "";
  position: absolute;
  top: -5px;
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--copper);
  transition: transform .2s ease, box-shadow .2s ease;
}

.page-contact .coop-route-list li:hover::before,
.page-contact .coop-route-list li:focus-within::before {
  transform: scale(1.5);
  box-shadow: 0 0 0 6px rgba(216, 167, 106, 0.16);
}

.page-contact .coop-route-list h3 {
  margin: 0 0 .35rem;
  font-family: var(--serif);
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--paper);
}

.page-contact .coop-route-list p {
  margin: 0;
  font-size: .82rem;
  line-height: 1.66;
  color: rgba(246, 241, 231, 0.66);
}

/* ---------- 合作类型 ---------- */
.page-contact .coop-types {
  padding: var(--contact-gap) 0;
}

.page-contact .coop-types-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.6rem, 4vw, 3rem);
}

.page-contact .coop-index {
  padding: 1.15rem 1.05rem;
  border-radius: var(--r-lg);
  background: var(--paper-grey);
  border: 1px solid rgba(18, 59, 50, 0.1);
}

.page-contact .coop-index ol {
  list-style: none;
  margin: .8rem 0 0;
  padding: 0;
  display: grid;
  gap: .28rem;
}

.page-contact .coop-index a {
  display: flex;
  align-items: baseline;
  gap: .65rem;
  padding: .48rem .7rem;
  border-radius: var(--r-pill);
  font-size: .88rem;
  color: var(--ink);
  text-decoration: none;
  transition: background .18s ease, color .18s ease;
}

.page-contact .coop-index a:hover,
.page-contact .coop-index a:focus-visible {
  background: var(--ink);
  color: var(--paper);
}

.page-contact .coop-index a .mono {
  font-size: .72rem;
  color: var(--copper);
}

.page-contact .coop-index a:hover .mono,
.page-contact .coop-index a:focus-visible .mono {
  color: var(--copper-light);
}

.page-contact .coop-index-note {
  margin: 1rem 0 0;
  padding-top: .85rem;
  border-top: 1px solid rgba(18, 59, 50, 0.12);
  font-size: .78rem;
  line-height: 1.7;
  color: rgba(26, 26, 22, 0.62);
}

.page-contact .coop-type-list h2 {
  margin: .4rem 0 1.3rem;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  letter-spacing: -0.01em;
  color: var(--ink-deep);
}

.page-contact .coop-type {
  margin-bottom: .7rem;
  border: 1px solid rgba(18, 59, 50, 0.14);
  border-radius: var(--r-md);
  background: var(--paper);
  transition: border-color .18s ease, transform .18s ease;
}

.page-contact .coop-type:hover {
  border-color: rgba(183, 121, 60, 0.55);
  transform: translateY(-2px);
}

.page-contact .coop-type[open] {
  border-color: var(--copper);
}

.page-contact .coop-type summary {
  display: flex;
  align-items: center;
  gap: .8rem;
  padding: 1rem 1.15rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--serif);
  font-size: 1.04rem;
  font-weight: 600;
  color: var(--ink-deep);
}

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

.page-contact .coop-type summary .mono {
  font-size: .74rem;
  color: var(--copper);
}

.page-contact .coop-type summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--mono);
  font-size: 1.1rem;
  color: var(--copper);
}

.page-contact .coop-type[open] summary::after {
  content: "–";
}

.page-contact .coop-type-body {
  padding: 0 1.15rem 1.15rem;
}

.page-contact .coop-type-body p {
  margin: 0 0 .7rem;
  font-size: .91rem;
  line-height: 1.78;
  color: rgba(26, 26, 22, 0.8);
}

.page-contact .coop-type-body ul {
  margin: 0;
  padding-left: 1.1rem;
  display: grid;
  gap: .3rem;
  font-size: .87rem;
  line-height: 1.75;
  color: rgba(26, 26, 22, 0.7);
}

.page-contact .coop-type-body a {
  color: var(--cinnabar);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .coop-more {
  margin: 1.4rem 0 0;
  font-size: .88rem;
}

.page-contact .coop-more a {
  display: inline-block;
  padding-bottom: .16rem;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--copper);
}

.page-contact .coop-more a:hover {
  color: var(--copper);
}

/* ---------- 合作流程 ---------- */
.page-contact .coop-flow {
  padding: var(--contact-gap) 0;
  background: var(--paper-grey);
}

.page-contact .coop-head h2 {
  margin: .4rem 0 .8rem;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.55rem, 3.2vw, 2.3rem);
  letter-spacing: -0.015em;
  color: var(--ink-deep);
}

.page-contact .coop-head-lede {
  max-width: 40em;
  margin: 0;
  font-size: .95rem;
  line-height: 1.8;
  color: rgba(26, 26, 22, 0.74);
}

.page-contact .coop-flow-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.6rem, 4vw, 2.6rem);
  margin-top: clamp(1.5rem, 4vw, 2.2rem);
}

.page-contact .coop-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .coop-steps li {
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr);
  column-gap: 1rem;
  padding: 1.1rem 0;
  border-top: 1px solid rgba(18, 59, 50, 0.16);
}

.page-contact .coop-steps li:first-child {
  border-top: none;
  padding-top: .2rem;
}

.page-contact .coop-steps .step-num {
  grid-column: 1;
  grid-row: 1 / span 2;
  padding-top: .2rem;
  font-size: .8rem;
  letter-spacing: .06em;
  color: var(--copper);
}

.page-contact .coop-steps h3 {
  grid-column: 2;
  margin: 0 0 .3rem;
  font-family: var(--serif);
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--ink-deep);
}

.page-contact .coop-steps p {
  grid-column: 2;
  margin: 0;
  font-size: .89rem;
  line-height: 1.74;
  color: rgba(26, 26, 22, 0.74);
}

.page-contact .coop-flow-media {
  margin: 0;
  overflow: hidden;
  border-radius: var(--r-lg);
  border: 1px solid rgba(183, 121, 60, 0.35);
  background: var(--ink-deep);
}

.page-contact .coop-flow-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-contact .coop-flow-media figcaption {
  padding: .6rem .9rem;
  font-size: .72rem;
  letter-spacing: .12em;
  background: var(--ink);
  color: rgba(246, 241, 231, 0.82);
}

/* ---------- 准备清单与来访 ---------- */
.page-contact .coop-prep {
  padding: var(--contact-gap) 0;
}

.page-contact .coop-prep-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.6rem, 4vw, 3rem);
}

.page-contact .coop-checklist h2 {
  margin: .4rem 0 .7rem;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  letter-spacing: -0.015em;
  color: var(--ink-deep);
}

.page-contact .coop-prep-lede {
  margin: 0;
  font-size: .93rem;
  line-height: 1.8;
  color: rgba(26, 26, 22, 0.72);
}

.page-contact .coop-checklist ul {
  list-style: none;
  margin: 1.3rem 0 0;
  padding: 0;
  display: grid;
  gap: .55rem;
}

.page-contact .coop-checklist li {
  display: grid;
  grid-template-columns: 1.8rem minmax(0, 1fr);
  gap: .8rem;
  padding: .95rem 1.05rem;
  border-radius: var(--r-md);
  background: var(--paper-grey);
  border: 1px solid rgba(18, 59, 50, 0.08);
  transition: border-color .18s ease, transform .18s ease;
}

.page-contact .coop-checklist li:hover {
  border-color: rgba(183, 121, 60, 0.48);
  transform: translateY(-2px);
}

.page-contact .coop-checklist li > .mono {
  padding-top: .18rem;
  font-size: .76rem;
  color: var(--copper);
}

.page-contact .coop-checklist strong {
  display: block;
  margin-bottom: .18rem;
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink-deep);
}

.page-contact .coop-checklist p {
  margin: 0;
  font-size: .86rem;
  line-height: 1.7;
  color: rgba(26, 26, 22, 0.74);
}

.page-contact .coop-prep-foot {
  margin: 1.2rem 0 0;
  font-size: .85rem;
  color: rgba(26, 26, 22, 0.66);
}

.page-contact .coop-prep-foot a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--copper);
}

.page-contact .coop-prep-foot a:hover {
  color: var(--copper);
}

.page-contact .coop-visit {
  position: relative;
  overflow: hidden;
  padding: clamp(1.4rem, 3vw, 2rem);
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, var(--ink) 0%, var(--ink-deep) 100%);
  color: var(--paper);
}

.page-contact .coop-visit::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -22%;
  width: 18rem;
  height: 18rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(183, 121, 60, 0.3), transparent 68%);
  pointer-events: none;
}

.page-contact .coop-visit > * {
  position: relative;
}

.page-contact .coop-visit .eyebrow {
  color: var(--copper-light);
}

.page-contact .coop-visit h2 {
  margin: .4rem 0 .8rem;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.3rem, 2.4vw, 1.65rem);
  line-height: 1.32;
  color: var(--paper);
}

.page-contact .coop-visit-lede {
  margin: 0 0 1.2rem;
  font-size: .9rem;
  line-height: 1.78;
  color: rgba(246, 241, 231, 0.76);
}

.page-contact .coop-visit-list {
  margin: 0;
  display: grid;
  gap: .6rem;
}

.page-contact .coop-visit-list > div {
  padding: .8rem .95rem;
  border-radius: var(--r-md);
  background: rgba(246, 241, 231, 0.06);
  border: 1px solid rgba(216, 167, 106, 0.24);
}

.page-contact .coop-visit-list dt {
  margin-bottom: .22rem;
  font-size: .68rem;
  letter-spacing: .18em;
  color: var(--copper-light);
}

.page-contact .coop-visit-list dd {
  margin: 0;
  font-size: .9rem;
  line-height: 1.68;
  color: rgba(246, 241, 231, 0.94);
}

.page-contact .coop-visit-list dd.mono {
  font-family: var(--mono);
  font-size: .88rem;
  word-break: break-word;
}

.page-contact .coop-visit-note {
  margin: 1rem 0 0;
  font-size: .8rem;
  line-height: 1.72;
  color: rgba(246, 241, 231, 0.6);
}

/* ---------- 联系渠道与需求邮件 ---------- */
.page-contact .coop-contact {
  padding: var(--contact-gap) 0 clamp(2.4rem, 5vw, 3.6rem);
  background: linear-gradient(158deg, var(--ink-deep) 0%, var(--ink) 62%, #16463b 100%);
  color: var(--paper);
}

.page-contact .coop-contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.6rem, 4vw, 3rem);
}

.page-contact .coop-channels .eyebrow {
  color: var(--copper-light);
}

.page-contact .coop-channels h2 {
  margin: .4rem 0 .8rem;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.5rem, 3vw, 2.15rem);
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-contact .coop-channels-lede {
  margin: 0;
  max-width: 36em;
  font-size: .93rem;
  line-height: 1.8;
  color: rgba(246, 241, 231, 0.78);
}

.page-contact .contact-list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: .65rem;
}

.page-contact .contact-list li {
  display: grid;
  gap: .22rem;
  padding: .9rem 1.1rem;
  border-radius: var(--r-md);
  background: rgba(246, 241, 231, 0.06);
  border: 1px solid rgba(216, 167, 106, 0.26);
  transition: border-color .18s ease, background .18s ease;
}

.page-contact .contact-list li:hover {
  border-color: var(--copper-light);
  background: rgba(246, 241, 231, 0.1);
}

.page-contact .contact-list .label {
  font-size: .68rem;
  letter-spacing: .18em;
  color: var(--copper-light);
}

.page-contact .contact-list .val {
  font-family: var(--mono);
  font-size: .94rem;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .coop-channels-note {
  margin: .95rem 0 0;
  font-size: .82rem;
  line-height: 1.76;
  color: rgba(246, 241, 231, 0.66);
}

.page-contact .coop-channels-note a {
  color: var(--copper-light);
  text-decoration: none;
  border-bottom: 1px solid rgba(216, 167, 106, 0.55);
}

.page-contact .coop-channels-note a:hover {
  color: var(--paper);
}

.page-contact .coop-request {
  padding: clamp(1.4rem, 3vw, 2.1rem);
  border-radius: var(--r-lg);
  background: var(--paper);
  border: 1px solid rgba(216, 167, 106, 0.55);
  color: var(--black);
}

.page-contact .coop-request h2 {
  margin: .4rem 0 1rem;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.3rem, 2.4vw, 1.68rem);
  line-height: 1.34;
  color: var(--ink-deep);
}

.page-contact .request-lines {
  list-style: none;
  margin: 0 0 1.4rem;
  padding: 0;
  display: grid;
  gap: .5rem;
}

.page-contact .request-lines li {
  display: grid;
  grid-template-columns: 1.5rem minmax(0, 1fr);
  gap: .65rem;
  padding-bottom: .5rem;
  border-bottom: 1px dashed rgba(18, 59, 50, 0.2);
  font-size: .87rem;
  line-height: 1.7;
  color: rgba(26, 26, 22, 0.82);
}

.page-contact .request-lines .mono {
  font-size: .76rem;
  color: var(--copper);
  padding-top: .1rem;
}

.page-contact .coop-request-btn {
  display: inline-flex;
  width: 100%;
  justify-content: center;
}

.page-contact .coop-request-hint {
  margin: .8rem 0 0;
  font-size: .78rem;
  line-height: 1.7;
  color: rgba(26, 26, 22, 0.58);
}

.page-contact .coop-backtop {
  display: inline-block;
  margin-top: clamp(1.6rem, 4vw, 2.4rem);
  padding-bottom: .18rem;
  font-size: .84rem;
  letter-spacing: .06em;
  color: var(--copper-light);
  text-decoration: none;
  border-bottom: 1px solid rgba(216, 167, 106, 0.55);
}

.page-contact .coop-backtop:hover {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .coop-route-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.2rem 1.4rem;
  }
}

@media (min-width: 760px) {
  .page-contact .coop-route-list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: .9rem;
  }
}

@media (min-width: 860px) {
  .page-contact .coop-prep-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-contact .coop-cover-inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-contact .coop-types-grid {
    grid-template-columns: 14.5rem minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .coop-index {
    position: sticky;
    top: 1.6rem;
  }

  .page-contact .coop-flow-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
    align-items: start;
  }

  .page-contact .coop-contact-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
    align-items: start;
  }
}

@media (min-width: 1180px) {
  .page-contact .coop-types-grid {
    grid-template-columns: 15.5rem minmax(0, 1fr);
    gap: 3.4rem;
  }
}
<<<END>>>