.page-contact {
  --co-line: rgba(216, 179, 106, 0.26);
  --co-line-soft: rgba(216, 179, 106, 0.13);
  --co-cyan-soft: rgba(53, 241, 208, 0.16);
}

/* ---------- 首屏 ---------- */
.page-contact .co-hero {
  position: relative;
  padding-block: clamp(22px, 3.6vw, 44px) clamp(34px, 6vw, 78px);
  overflow: hidden;
}

.page-contact .co-hero::before {
  content: "";
  position: absolute;
  inset: -10% -20% auto auto;
  width: 62vw;
  height: 62vw;
  max-width: 760px;
  max-height: 760px;
  background: radial-gradient(circle at 60% 40%, rgba(53, 241, 208, 0.14), transparent 62%);
  pointer-events: none;
}

.page-contact .co-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 46px);
}

.page-contact .co-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.06;
  color: var(--mist);
}

.page-contact .co-hero__lede {
  margin-top: 18px;
  max-width: 60ch;
  color: var(--gray);
}

.page-contact .co-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-contact .co-hero__facts {
  list-style: none;
  margin: 30px 0 0;
  padding: 1px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--co-line-soft);
  border: 1px solid var(--co-line-soft);
}

.page-contact .co-hero__facts li {
  background: var(--ink);
  padding: 13px 15px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray);
}

.page-contact .co-hero__facts strong {
  display: block;
  margin-bottom: 3px;
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--cyan);
}

/* 首屏联系卡 */
.page-contact .co-hero__card {
  position: relative;
  padding: 30px 22px 24px;
  background: linear-gradient(168deg, var(--panel), var(--ink-deep));
  border: 1px solid var(--co-line);
  box-shadow: 0 22px 48px rgba(0, 0, 0, 0.38);
}

.page-contact .co-hero__card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 44%;
  height: 4px;
  background: linear-gradient(90deg, var(--orange), var(--cyan));
}

.page-contact .co-hero__card-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--sand);
}

.page-contact .co-hero__card-title {
  margin: 8px 0 22px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--mist);
}

.page-contact .co-hero__quick {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-contact .co-hero__quick li {
  padding: 12px 0;
  border-bottom: 1px dashed var(--co-line-soft);
}

.page-contact .co-hero__quick span {
  display: block;
  margin-bottom: 5px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--sand);
}

.page-contact .co-hero__quick strong {
  display: block;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--mist);
  overflow-wrap: anywhere;
}

.page-contact .co-hero__card-note {
  margin: 18px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--gray);
}

/* ---------- 区块通用 ---------- */
.page-contact .co-head {
  max-width: 64ch;
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-contact .co-h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(25px, 3.4vw, 42px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--mist);
}

.page-contact .co-head .lede,
.page-contact .co-prep__intro .lede {
  margin-top: 14px;
  color: var(--gray);
}

/* ---------- 合作类型筛选 ---------- */
.page-contact .co-filter {
  position: relative;
}

.page-contact .co-type-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: 20px;
}

.page-contact .co-type {
  position: relative;
  padding: 22px 20px 20px;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-contact .co-type:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 34px rgba(0, 0, 0, 0.32);
}

.page-contact .co-type h3 {
  margin: 12px 0 10px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  line-height: 1.34;
  color: var(--mist);
}

.page-contact .co-type p {
  margin: 0 0 16px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--gray);
}

.page-contact .co-type__meta {
  margin: 0;
  padding-top: 14px;
  display: grid;
  gap: 9px;
  border-top: 1px dashed var(--co-line-soft);
}

.page-contact .co-type__meta div {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}

.page-contact .co-type__meta dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--sand);
}

.page-contact .co-type__meta dd {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
  opacity: 0.82;
}

.page-contact .filter-empty {
  margin: 22px 0 0;
  padding: 18px 20px;
  font-size: 14px;
  color: var(--gray);
  border: 1px dashed var(--co-line);
  background: var(--panel);
}

/* ---------- 五步流程 ---------- */
.page-contact .co-process__figure {
  margin: 0 0 26px;
  background: var(--panel);
  border: 1px solid var(--co-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-contact .co-process__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  max-width: 100%;
}

.page-contact .co-process__figure figcaption {
  padding: 11px 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: var(--sand);
  border-top: 1px solid var(--co-line-soft);
}

.page-contact .co-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.page-contact .co-jump a {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--mist);
  text-decoration: none;
  background: var(--panel);
  border: 1px solid var(--co-line-soft);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .co-jump a:hover,
.page-contact .co-jump a:focus-visible {
  border-color: var(--sand);
  color: var(--sand);
}

.page-contact .co-process__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .co-step {
  position: relative;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 14px;
  padding: 20px 22px 20px 18px;
  background: var(--card);
  border-left: 2px solid var(--sand);
  scroll-margin-top: 100px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}

.page-contact .co-step::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 26px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 0 3px var(--co-cyan-soft);
}

.page-contact .co-step__no {
  font-family: var(--font-mono);
  font-size: 25px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--orange);
  padding-top: 2px;
}

.page-contact .co-step h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--mist);
}

.page-contact .co-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--gray);
}

/* ---------- 服务能力 ---------- */
.page-contact .co-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  padding: 1px;
  background: var(--co-line-soft);
  border: 1px solid var(--co-line-soft);
}

.page-contact .co-stat {
  background: var(--ink-deep);
  padding: 20px 18px 22px;
}

.page-contact .co-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--cyan);
}

.page-contact .co-stat__key {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--mist);
}

.page-contact .co-stat p {
  margin: 10px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--gray);
}

.page-contact .co-capacity__note {
  margin-top: 24px;
  padding-left: 18px;
  border-left: 2px solid var(--co-line);
}

.page-contact .co-capacity__note p {
  margin: 0 0 14px;
  max-width: 78ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--gray);
}

.page-contact .co-capacity__note p:last-child {
  margin-bottom: 0;
}

.page-contact .co-capacity__note a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--co-line);
}

.page-contact .co-capacity__note a:hover {
  color: var(--sand);
}

/* ---------- 联系渠道 ---------- */
.page-contact .co-contact {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4vw, 46px);
  background: linear-gradient(150deg, var(--panel), var(--ink-deep));
  border: 1px solid var(--co-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-contact .co-contact__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  opacity: 0.16;
  filter: saturate(0.65);
  pointer-events: none;
}

.page-contact .co-contact__body {
  position: relative;
  z-index: 1;
  max-width: 70ch;
}

.page-contact .co-contact__lede {
  margin-top: 14px;
  color: var(--gray);
}

.page-contact .co-channels {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}

.page-contact .co-channel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--co-line-soft);
}

.page-contact .co-channel__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--sand);
}

.page-contact .co-channel__val {
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--mist);
  overflow-wrap: anywhere;
}

.page-contact .co-contact__note {
  margin: 20px 0 0;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--gray);
}

.page-contact .co-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* ---------- 提交前准备 ---------- */
.page-contact .co-prep__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-contact .co-prep__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .co-prep__item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  padding: 18px 18px 18px 16px;
  background: var(--panel);
  border: 1px solid var(--co-line-soft);
  transition: border-color var(--dur) var(--ease);
}

.page-contact .co-prep__item:hover {
  border-color: var(--co-line);
}

.page-contact .co-prep__no {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--sand);
  padding-top: 3px;
}

.page-contact .co-prep__item h3 {
  margin: 0 0 7px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  color: var(--mist);
}

.page-contact .co-prep__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--gray);
}

.page-contact .co-prep__item a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--co-line);
}

.page-contact .co-prep__item a:hover {
  color: var(--sand);
}

/* ---------- 收束 ---------- */
.page-contact .co-tail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 34px;
  padding: 22px 22px 22px 20px;
  background: var(--ink-deep);
  border-top: 2px solid var(--orange);
  border-bottom: 1px solid var(--co-line-soft);
}

.page-contact .co-tail p {
  margin: 0;
  max-width: 48ch;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--gray);
}

.page-contact .co-tail__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-contact .co-channel {
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }

  .page-contact .co-hero__card {
    padding: 32px 28px 26px;
  }
}

@media (min-width: 760px) {
  .page-contact .co-type-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-contact .co-step:nth-child(even) {
    margin-left: 7%;
  }

  .page-contact .co-step:nth-child(odd) {
    margin-right: 7%;
  }
}

@media (min-width: 900px) {
  .page-contact .co-hero__grid {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-contact .co-hero__card {
    margin-top: 18px;
  }

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

  .page-contact .co-prep__grid {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
    align-items: start;
    gap: 40px;
  }
}

@media (min-width: 1080px) {
  .page-contact .co-process__list {
    gap: 16px;
  }

  .page-contact .co-step {
    padding: 24px 28px 24px 22px;
    grid-template-columns: 56px minmax(0, 1fr);
  }

  .page-contact .co-step__no {
    font-size: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .co-type,
  .page-contact .co-jump a,
  .page-contact .co-prep__item {
    transition: none;
  }

  .page-contact .co-type:hover {
    transform: none;
  }
}
<<<END>>>