.page-contact {
  --pc-pad: clamp(3.25rem, 8vw, 6.5rem);
  background: var(--ink);
  color: var(--text);
}

/* ---------- 页头 ---------- */
.page-contact .contact-head {
  position: relative;
  padding-top: clamp(1.75rem, 5vw, 3rem);
  padding-bottom: 0;
}

.page-contact .contact-head .eyebrow {
  margin: clamp(1.5rem, 4vw, 2.5rem) 0 0;
  font-family: var(--f-mono);
  font-size: var(--fs-12);
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-contact .contact-head h1 {
  margin: .75rem 0 0;
  max-width: 22ch;
  font-family: var(--f-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 5.4vw, 3.75rem);
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--ivory);
}

.page-contact .contact-head .lede {
  margin: 1.25rem 0 0;
  max-width: 60ch;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--text-soft);
}

.page-contact .head-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 1.75rem;
}

.page-contact .contact-hero {
  margin: clamp(2rem, 5vw, 3.5rem) 0 0;
}

.page-contact .contact-hero img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

/* ---------- 章节索引条 ---------- */
.page-contact .chapter-strip {
  background: var(--ink-2);
  border-bottom: 1px solid var(--line);
}

.page-contact .strip-list {
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-contact .strip-list::-webkit-scrollbar {
  display: none;
}

.page-contact .strip-list a {
  display: flex;
  align-items: baseline;
  gap: .5rem;
  padding: 1rem 1.25rem;
  border-right: 1px solid var(--line);
  white-space: nowrap;
  text-decoration: none;
  color: var(--text-soft);
  transition: color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-contact .strip-list a:hover,
.page-contact .strip-list a:focus-visible {
  color: var(--gold-bright);
  background: rgba(200, 162, 74, .08);
}

.page-contact .strip-num {
  font-family: var(--f-mono);
  font-size: var(--fs-12);
  letter-spacing: .12em;
  color: var(--gold);
}

.page-contact .strip-name {
  font-size: var(--fs-14);
}

/* ---------- 色带与章节标题 ---------- */
.page-contact .band {
  position: relative;
  padding-block: var(--pc-pad);
}

.page-contact .band--ink {
  background: var(--ink);
}

.page-contact .band--ink-2 {
  background: var(--ink-2);
}

.page-contact .band--ivory {
  background: var(--ivory);
  color: var(--ink);
}

.page-contact .sec-head {
  max-width: 68ch;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}

.page-contact .sec-num {
  margin: 0;
  font-family: var(--f-mono);
  font-size: var(--fs-14);
  letter-spacing: .2em;
  color: var(--gold);
}

.page-contact .sec-title {
  margin: .75rem 0 0;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.4vw, 2.5rem);
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--ivory);
}

.page-contact .band--ivory .sec-title {
  color: var(--ink);
}

.page-contact .sec-lede {
  margin: 1rem 0 0;
  max-width: 60ch;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--text-soft);
}

.page-contact .band--ivory .sec-lede {
  color: rgba(11, 11, 13, .72);
}

/* ---------- 01 流程 ---------- */
.page-contact .flow-track {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .flow-step {
  position: relative;
  padding: clamp(1.5rem, 3vw, 2rem);
  background: var(--ink-2);
  transition: background var(--t-mid) var(--ease);
}

.page-contact .flow-step::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--t-mid) var(--ease);
}

.page-contact .flow-step:hover,
.page-contact .flow-step:focus-within {
  background: var(--ink-3);
}

.page-contact .flow-step:hover::after,
.page-contact .flow-step:focus-within::after {
  transform: scaleX(1);
}

.page-contact .flow-num {
  display: block;
  font-family: var(--f-mono);
  font-size: var(--fs-14);
  letter-spacing: .2em;
  color: var(--gold);
}

.page-contact .flow-name {
  margin: .75rem 0 .5rem;
  font-family: var(--f-display);
  font-size: var(--fs-20);
  font-weight: 700;
  line-height: 1.35;
  color: var(--ivory);
}

.page-contact .flow-note {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--text-soft);
  transition: color var(--t-mid) var(--ease);
}

.page-contact .flow-step:hover .flow-note,
.page-contact .flow-step:focus-within .flow-note {
  color: var(--text);
}

.page-contact .flow-figure {
  margin: clamp(2rem, 4vw, 3rem) 0 0;
}

.page-contact .flow-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  border: 1px solid var(--line);
}

.page-contact .flow-figure .media-caption {
  margin-top: .875rem;
  font-family: var(--f-mono);
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--mist);
}

/* ---------- 02 合作形式 ---------- */
.page-contact .coop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1rem, 2.4vw, 1.75rem);
}

.page-contact .coop-card {
  display: flex;
  flex-direction: column;
  padding: clamp(1.5rem, 3vw, 2.25rem);
  background: var(--ink-2);
  color: var(--text);
  border: 1px solid var(--line-strong);
  box-shadow: 6px 6px 0 rgba(200, 162, 74, .16);
  transition: transform var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease);
}

.page-contact .coop-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 10px 10px 0 rgba(200, 162, 74, .26);
}

.page-contact .coop-index {
  margin: 0 0 1rem;
  font-family: var(--f-mono);
  font-size: var(--fs-12);
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--jade);
}

.page-contact .coop-name {
  margin: 0;
  font-family: var(--f-display);
  font-size: var(--fs-28);
  font-weight: 800;
  line-height: 1.2;
  color: var(--ivory);
}

.page-contact .coop-lead {
  margin: .875rem 0 0;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--text-soft);
}

.page-contact .coop-more {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.page-contact .coop-more summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  list-style: none;
  cursor: pointer;
  font-size: var(--fs-14);
  letter-spacing: .04em;
  color: var(--gold);
  transition: color var(--t-fast) var(--ease);
}

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

.page-contact .coop-more summary::after {
  content: "+";
  font-family: var(--f-mono);
  font-size: var(--fs-16);
  line-height: 1;
  transition: transform var(--t-fast) var(--ease);
}

.page-contact .coop-more[open] summary::after {
  transform: rotate(45deg);
}

.page-contact .coop-more summary:hover,
.page-contact .coop-more summary:focus-visible {
  color: var(--gold-bright);
}

.page-contact .coop-more-body {
  padding-top: .875rem;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--text-soft);
}

.page-contact .coop-more-body p {
  margin: 0 0 .75rem;
}

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

/* ---------- 03 适用场景 ---------- */
.page-contact .scene-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .scene-item {
  display: flex;
  flex-direction: column;
  gap: .625rem;
  padding: clamp(1.5rem, 2.6vw, 2rem);
  background: var(--ink-2);
}

.page-contact .scene-role {
  margin: 0;
  font-family: var(--f-display);
  font-size: var(--fs-20);
  font-weight: 700;
  color: var(--gold-bright);
}

.page-contact .scene-need {
  flex: 1;
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--text-soft);
}

.page-contact .scene-fit {
  margin: 0;
  padding-top: .75rem;
  border-top: 1px solid var(--line);
  font-family: var(--f-mono);
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--jade);
}

/* ---------- 04 内容资源 ---------- */
.page-contact .res-list {
  display: grid;
  border-top: 1px solid var(--line);
}

.page-contact .res-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: .5rem;
  padding: 1.375rem 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .res-num {
  margin: 0;
  font-family: var(--f-display);
  font-size: clamp(1.625rem, 4vw, 2.375rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.01em;
  color: var(--gold);
}

.page-contact .res-label {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--text-soft);
}

.page-contact .res-foot {
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
  max-width: 68ch;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--text-soft);
}

.page-contact .res-foot a {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: .22em;
  transition: color var(--t-fast) var(--ease);
}

.page-contact .res-foot a:hover {
  color: var(--gold-bright);
}

/* ---------- 05 对接方式 ---------- */
.page-contact .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 3vw, 2.5rem);
}

.page-contact .channel-item {
  padding-top: 1.25rem;
  border-top: 2px solid var(--gold);
}

.page-contact .channel-key {
  margin: 0 0 .75rem;
  font-family: var(--f-mono);
  font-size: var(--fs-12);
  letter-spacing: .2em;
  text-transform: uppercase;
  color: rgba(11, 11, 13, .58);
}

.page-contact .channel-value {
  margin: 0;
  font-family: var(--f-display);
  font-size: clamp(1.125rem, 2.2vw, 1.5rem);
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
  word-break: break-word;
}

.page-contact .channel-value a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 162, 74, .7);
  transition: border-color var(--t-fast) var(--ease);
}

.page-contact .channel-value a:hover,
.page-contact .channel-value a:focus-visible {
  border-color: var(--cinnabar);
}

.page-contact .channel-item--address .channel-value {
  font-family: var(--f-body);
  font-size: var(--fs-16);
  font-weight: 600;
  line-height: 1.7;
}

.page-contact .channel-note {
  margin: .875rem 0 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: rgba(11, 11, 13, .68);
}

.page-contact .channel-foot {
  margin: clamp(2rem, 4vw, 2.75rem) 0 0;
  padding-top: 1.25rem;
  max-width: 68ch;
  border-top: 1px solid rgba(11, 11, 13, .14);
  font-size: var(--fs-14);
  line-height: 1.8;
  color: rgba(11, 11, 13, .68);
}

.page-contact .channel-foot a {
  color: var(--jade-deep);
  text-decoration: underline;
  text-underline-offset: .22em;
}

.page-contact .channel-foot a:hover {
  color: var(--cinnabar);
}

/* ---------- 06 来访说明 ---------- */
.page-contact .visit-note {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1rem, 3vw, 2.5rem);
  padding: clamp(1.5rem, 4vw, 3rem);
  background: var(--ink-2);
  border: 1px solid var(--line);
}

.page-contact .visit-mark {
  margin: 0;
  font-family: var(--f-display);
  font-size: clamp(2.75rem, 8vw, 4.5rem);
  font-weight: 900;
  line-height: 1;
  color: rgba(200, 162, 74, .3);
}

.page-contact .visit-body .sec-title {
  margin-top: 0;
}

.page-contact .visit-body p {
  margin: 1rem 0 0;
  max-width: 62ch;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--text-soft);
}

/* ---------- 07 常见疑问 ---------- */
.page-contact .qa-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-contact .qa-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: .625rem;
  padding: clamp(1.25rem, 3vw, 1.75rem) 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .qa-q {
  margin: 0;
  font-family: var(--f-display);
  font-size: var(--fs-20);
  font-weight: 700;
  line-height: 1.5;
  color: var(--gold-bright);
}

.page-contact .qa-a {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--text-soft);
}

.page-contact .qa-foot {
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
  max-width: 68ch;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--text-soft);
}

.page-contact .qa-foot a {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: .22em;
}

.page-contact .qa-foot a:hover {
  color: var(--gold-bright);
}

.page-contact .qa-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 1.75rem;
}

/* ---------- 桌面端增强 ---------- */
@media (min-width: 760px) {
  .page-contact .flow-track {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .res-item {
    grid-template-columns: minmax(180px, 260px) 1fr;
    align-items: baseline;
    gap: 2rem;
  }

  .page-contact .qa-item {
    grid-template-columns: minmax(220px, 320px) 1fr;
    gap: 2.5rem;
  }
}

@media (min-width: 900px) {
  .page-contact .flow-track {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-contact .coop-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .scene-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .channel-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .visit-note {
    grid-template-columns: auto 1fr;
    align-items: start;
  }
}

@media (min-width: 1120px) {
  .page-contact .scene-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .coop-card,
  .page-contact .flow-step,
  .page-contact .flow-step::after,
  .page-contact .coop-more summary::after {
    transition: none;
  }

  .page-contact .coop-card:hover {
    transform: none;
  }
}
<<<END>>>