.page-contact {
  --co-line: var(--line);
  overflow-x: clip;
  padding-bottom: 0;
}

/* ---------- 面包屑 ---------- */
.page-contact .co-crumbwrap {
  padding: 6px 0 20px;
}

/* ---------- 首屏 ---------- */
.page-contact .co-hero {
  padding: 0 0 52px;
  border-bottom: 1px solid var(--co-line);
}
.page-contact .co-hero__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan);
  text-transform: uppercase;
}
.page-contact .co-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(46px, 13.5vw, 88px);
  line-height: .94;
  letter-spacing: -.015em;
  color: var(--text);
}
.page-contact .co-hero__sub {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.65;
  color: var(--amber);
}
.page-contact .co-hero__lead {
  margin: 22px 0 0;
  max-width: 36em;
  font-size: 17px;
  line-height: 1.88;
  color: var(--text-dim);
}

.page-contact .co-facts {
  margin-top: 30px;
  display: grid;
  gap: 1px;
  border: 1px solid var(--co-line);
  border-radius: var(--radius-m);
  background: var(--co-line);
  overflow: hidden;
}
.page-contact .co-fact {
  padding: 16px 18px;
  background: var(--ink-800);
}
.page-contact .co-fact__k {
  display: block;
  margin-bottom: 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--text-dim);
}
.page-contact .co-fact__v {
  display: block;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.5;
  color: var(--amber);
  word-break: break-word;
}

/* ---------- 分栏：合作类型 + 流程 ---------- */
.page-contact .co-split {
  margin-top: 48px;
}
.page-contact .co-split__inner {
  display: grid;
  gap: 44px;
}
.page-contact .co-split__col {
  min-width: 0;
}
.page-contact .co-coltitle {
  position: relative;
  margin: 0;
  padding-bottom: 12px;
  font-family: var(--font-display);
  font-size: clamp(26px, 6.8vw, 34px);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text);
}
.page-contact .co-coltitle::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 44px;
  height: 2px;
  background: var(--cyan);
}
.page-contact .co-colsub {
  margin: 12px 0 0;
  max-width: 30em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

/* 图片 */
.page-contact .co-figure {
  margin: 24px 0 0;
  border: 1px solid var(--co-line);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--ink-800);
}
.page-contact .co-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  opacity: .88;
  transition: opacity var(--ease);
}
.page-contact .co-figure:hover img {
  opacity: 1;
}

/* 合作卡片 */
.page-contact .co-cards {
  margin-top: 18px;
  display: grid;
  gap: 12px;
}
.page-contact .co-card {
  position: relative;
  padding: 20px 20px 20px 24px;
  border: 1px solid var(--co-line);
  border-radius: var(--radius-m);
  background: var(--ink-800);
  transition: border-color var(--ease);
}
.page-contact .co-card::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 20px;
  bottom: 20px;
  width: 2px;
  border-radius: 2px;
  background: var(--line);
  transition: background var(--ease);
}
.page-contact .co-card:hover {
  border-color: var(--cyan);
}
.page-contact .co-card:hover::before {
  background: var(--amber);
}
.page-contact .co-card__no {
  margin: 0 0 7px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--cyan);
}
.page-contact .co-card__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 25px;
  font-weight: 700;
  line-height: 1.18;
  color: var(--text);
}
.page-contact .co-card__desc {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text-dim);
}
.page-contact .co-card__desc a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(31, 227, 192, .45);
  transition: color var(--ease), border-color var(--ease);
}
.page-contact .co-card__desc a:hover {
  color: var(--cyan-bright);
  border-color: var(--cyan-bright);
}
.page-contact .co-card__meta {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  display: grid;
  gap: 9px;
}
.page-contact .co-card__meta > div {
  display: grid;
  grid-template-columns: 4.6em minmax(0, 1fr);
  gap: 10px;
}
.page-contact .co-card__meta dt {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--text-dim);
}
.page-contact .co-card__meta dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
}

.page-contact .co-note {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--amber);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--text-dim);
}

/* 流程步骤 */
.page-contact .co-steps {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  border-left: 1px solid var(--co-line);
}
.page-contact .co-step {
  position: relative;
  padding: 0 0 26px 22px;
}
.page-contact .co-step:last-child {
  padding-bottom: 0;
}
.page-contact .co-step::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 7px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 1px solid var(--line);
  transition: background var(--ease), border-color var(--ease), box-shadow var(--ease);
}
.page-contact .co-step:hover::before {
  background: var(--amber);
  border-color: var(--amber);
  box-shadow: 0 0 0 4px rgba(255, 176, 32, .14);
}
.page-contact .co-step__no {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--cyan);
  transition: color var(--ease);
}
.page-contact .co-step:hover .co-step__no {
  color: var(--amber);
}
.page-contact .co-step__title {
  margin: 0 0 7px;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--text);
}
.page-contact .co-step__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-dim);
}
.page-contact .co-step__need {
  margin: 9px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text-dim);
}
.page-contact .co-step__need span {
  margin-right: 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--amber-soft);
}

/* ---------- 通用区块 ---------- */
.page-contact .co-block {
  margin-top: 62px;
}
.page-contact .co-head {
  padding-bottom: 16px;
  margin-bottom: 26px;
  border-bottom: 1px solid var(--co-line);
  display: grid;
  gap: 8px;
}
.page-contact .co-head__no {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--cyan);
}
.page-contact .co-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 7vw, 38px);
  font-weight: 700;
  line-height: 1.16;
  color: var(--text);
}
.page-contact .co-head__sub {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 联络渠道 ---------- */
.page-contact .co-channels {
  display: grid;
  gap: 28px;
}
.page-contact .co-channels__list {
  display: grid;
  gap: 1px;
  border: 1px solid var(--co-line);
  border-radius: var(--radius-m);
  background: var(--co-line);
  overflow: hidden;
}
.page-contact .co-channel {
  padding: 18px 20px;
  background: var(--ink-800);
  transition: background var(--ease);
}
.page-contact .co-channel:hover {
  background: var(--ink-700);
}
.page-contact .co-channel__k {
  margin: 0 0 7px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--cyan);
}
.page-contact .co-channel__v {
  margin: 0 0 7px;
  font-family: var(--font-mono);
  font-size: 16.5px;
  line-height: 1.55;
  color: var(--text);
  word-break: break-word;
}
.page-contact .co-channel__d {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-dim);
}
.page-contact .co-channels__media {
  margin: 0;
  border: 1px solid var(--co-line);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--ink-800);
}
.page-contact .co-channels__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  opacity: .88;
  transition: opacity var(--ease);
}
.page-contact .co-channels__media:hover img {
  opacity: 1;
}

/* ---------- 主题与节奏 ---------- */
.page-contact .co-rhythm {
  display: grid;
  gap: 24px;
}
.page-contact .co-subject {
  padding: 20px;
  border: 1px solid var(--amber);
  border-radius: var(--radius-m);
  background: linear-gradient(180deg, rgba(255, 176, 32, .09), rgba(255, 176, 32, 0) 74%);
}
.page-contact .co-subject__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--amber);
}
.page-contact .co-subject__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
  word-break: break-word;
}
.page-contact .co-subject__value b {
  font-weight: 600;
  color: var(--amber);
  background: rgba(255, 176, 32, .14);
  padding: 1px 5px;
  border-radius: var(--radius-s);
}
.page-contact .co-subject__hint {
  margin: 14px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text-dim);
}
.page-contact .co-beats {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}
.page-contact .co-beat {
  display: grid;
  gap: 4px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
}
.page-contact .co-beat:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}
.page-contact .co-beat__t {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--amber);
}
.page-contact .co-beat__d {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 共建成果 ---------- */
.page-contact .co-outputs {
  display: grid;
  gap: 1px;
  border: 1px solid var(--co-line);
  border-radius: var(--radius-m);
  background: var(--co-line);
  overflow: hidden;
}
.page-contact .co-output {
  padding: 22px 20px;
  background: var(--ink-800);
  transition: background var(--ease);
}
.page-contact .co-output:hover {
  background: var(--ink-700);
}
.page-contact .co-output__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
}
.page-contact .co-output__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-dim);
}

/* ---------- 材料清单折叠 ---------- */
.page-contact .co-folds {
  display: grid;
  gap: 12px;
}
.page-contact .co-fold {
  border: 1px solid var(--co-line);
  border-radius: var(--radius-m);
  background: var(--ink-800);
  overflow: hidden;
  transition: border-color var(--ease);
}
.page-contact .co-fold[open] {
  border-color: var(--cyan);
}
.page-contact .co-fold__summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
  transition: color var(--ease);
}
.page-contact .co-fold__summary::-webkit-details-marker {
  display: none;
}
.page-contact .co-fold__summary::before {
  content: "";
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-top: -4px;
  border-right: 1.5px solid var(--cyan);
  border-bottom: 1.5px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform var(--ease), border-color var(--ease);
}
.page-contact .co-fold[open] .co-fold__summary::before {
  transform: rotate(-135deg);
  margin-top: 4px;
}
.page-contact .co-fold__summary:hover {
  color: var(--cyan-bright);
}
.page-contact .co-fold__body {
  padding: 0 18px 20px;
}
.page-contact .co-checklist {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}
.page-contact .co-checklist li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}
.page-contact .co-checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .75em;
  width: 9px;
  height: 1px;
  background: var(--cyan);
}
.page-contact .co-privacy {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
}
.page-contact .co-privacy a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(31, 227, 192, .45);
  transition: color var(--ease), border-color var(--ease);
}
.page-contact .co-privacy a:hover {
  color: var(--cyan-bright);
  border-color: var(--cyan-bright);
}

/* ---------- 底部摘要条 ---------- */
.page-contact .co-endbar {
  margin-top: 66px;
  border-top: 1px solid var(--co-line);
  background: linear-gradient(180deg, rgba(31, 227, 192, .07), rgba(31, 227, 192, 0) 82%);
}
.page-contact .co-endbar__inner {
  padding-top: 26px;
  padding-bottom: 26px;
  display: grid;
  gap: 14px;
}
.page-contact .co-endbar__lead {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
}
.page-contact .co-endbar__link {
  justify-self: start;
  font-size: 14px;
  line-height: 1.6;
  color: var(--cyan);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(31, 227, 192, .4);
  transition: color var(--ease), border-color var(--ease);
}
.page-contact .co-endbar__link:hover {
  color: var(--cyan-bright);
  border-color: var(--cyan-bright);
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-contact .co-beat {
    grid-template-columns: 8.4em minmax(0, 1fr);
    gap: 16px;
    align-items: start;
  }
}

@media (min-width: 680px) {
  .page-contact .co-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-contact .co-hero {
    padding-bottom: 62px;
  }
}

@media (min-width: 760px) {
  .page-contact .co-outputs {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-contact .co-endbar__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
  }
  .page-contact .co-endbar__link {
    justify-self: end;
  }
}

@media (min-width: 940px) {
  .page-contact .co-split__inner {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 1fr);
    gap: 54px;
    align-items: start;
  }
  .page-contact .co-channels {
    grid-template-columns: minmax(0, 1fr) minmax(0, .78fr);
    gap: 44px;
    align-items: start;
  }
  .page-contact .co-rhythm {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
    gap: 42px;
    align-items: start;
  }
}

@media (min-width: 1100px) {
  .page-contact .co-block {
    margin-top: 76px;
  }
  .page-contact .co-split {
    margin-top: 58px;
  }
  .page-contact .co-card {
    padding: 24px 24px 24px 28px;
  }
}
<<<END>>>