.page-contact {
  --co-section-gap: clamp(40px, 6vw, 80px);
}

/* ---------- 首屏 ---------- */
.page-contact .co-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  padding-top: clamp(22px, 4vw, 44px);
  padding-bottom: clamp(34px, 6vw, 72px);
}

.page-contact .co-hero__text {
  min-width: 0;
}

.page-contact .co-hero__text .lede {
  margin-top: 18px;
  max-width: 54ch;
}

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

.page-contact .co-hero__media {
  position: relative;
  margin: 0;
  padding: 10px;
  border: 1px solid var(--ink);
  background: var(--sand);
}

.page-contact .co-hero__media::after {
  content: "";
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: 46%;
  height: 6px;
  background: var(--pomegranate);
}

.page-contact .co-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .co-hero__media .media-caption {
  padding: 10px 2px 2px;
}

@media (min-width: 900px) {
  .page-contact .co-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

/* ---------- 章节骨架 ---------- */
.page-contact .co-section {
  padding-block: var(--co-section-gap);
}

.page-contact .co-section + .co-section {
  border-top: 1px solid var(--line);
}

/* ---------- 三类合作 ---------- */
.page-contact .co-channels {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-contact .co-channel {
  min-width: 0;
  border: 1px solid var(--ink);
  background: var(--paper);
  padding: 20px 18px 22px;
  transition: transform 200ms var(--ease), border-color 200ms var(--ease);
}

.page-contact .co-channel:hover,
.page-contact .co-channel:focus-within {
  transform: translateY(-2px);
  border-color: var(--pomegranate);
}

.page-contact .co-channel__no {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .14em;
  color: var(--pomegranate);
  border-bottom: 2px solid var(--gold);
  padding-bottom: 3px;
}

.page-contact .co-channel .title-sm {
  margin-top: 12px;
}

.page-contact .co-channel dl {
  margin: 16px 0 0;
  display: grid;
  gap: 14px;
}

.page-contact .co-channel dt {
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--oasis);
}

.page-contact .co-channel dd {
  margin: 4px 0 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

@media (min-width: 780px) {
  .page-contact .co-channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
    align-items: start;
  }

  .page-contact .co-channel:nth-child(2) {
    margin-top: 34px;
  }

  .page-contact .co-channel:nth-child(3) {
    margin-top: 68px;
  }
}

/* ---------- 入驻四步 ---------- */
.page-contact .co-steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-contact .co-steps__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .co-step {
  position: relative;
  padding-left: 56px;
  padding-bottom: 30px;
  min-width: 0;
}

.page-contact .co-step:last-child {
  padding-bottom: 0;
}

.page-contact .co-step::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 40px;
  bottom: 2px;
  width: 1px;
  background: var(--line);
}

.page-contact .co-step:last-child::before {
  display: none;
}

.page-contact .co-step__node {
  position: absolute;
  left: 0;
  top: 0;
  width: 37px;
  height: 37px;
  display: grid;
  place-items: center;
  background: var(--paper);
  border: 1px solid var(--ink);
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
}

.page-contact .co-step:hover .co-step__node {
  border-color: var(--pomegranate);
  color: var(--pomegranate);
}

.page-contact .co-step .title-sm {
  margin: 4px 0 0;
}

.page-contact .co-step p {
  margin: 8px 0 0;
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink);
}

.page-contact .co-audit {
  min-width: 0;
  background: var(--indigo);
  border: 1px solid var(--ink);
  padding: 24px 20px 22px;
}

.page-contact .co-audit .kicker {
  color: var(--gold);
  margin: 0;
}

.page-contact .co-audit__title {
  margin: 8px 0 18px;
  font-family: var(--font-head);
  font-size: clamp(19px, 2.4vw, 22px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-contact .co-audit__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 14px;
  padding: 15px 0;
  border-top: 1px solid rgba(251, 247, 239, .22);
}

.page-contact .co-audit__num {
  font-family: var(--font-head);
  font-size: clamp(26px, 4.6vw, 34px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
  color: var(--gold);
  white-space: nowrap;
}

.page-contact .co-audit__num small {
  font-size: .38em;
  font-weight: 700;
  margin-left: 4px;
  letter-spacing: 0;
}

.page-contact .co-audit__row p {
  flex: 1 1 170px;
  margin: 0;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.7;
  color: rgba(251, 247, 239, .88);
}

.page-contact .co-audit__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid rgba(201, 146, 46, .5);
  font-family: var(--font-head);
  font-size: 13px;
  line-height: 1.7;
  color: rgba(251, 247, 239, .8);
}

@media (min-width: 960px) {
  .page-contact .co-steps {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-contact .co-audit {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}

/* ---------- 合作规模 ---------- */
.page-contact .co-scale {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-top: clamp(24px, 4vw, 40px);
}

.page-contact .co-scale__cell {
  min-width: 0;
  background: var(--sand);
  padding: 20px 18px 22px;
}

.page-contact .co-scale__num {
  display: block;
  font-family: var(--font-head);
  font-size: clamp(30px, 4.4vw, 42px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
}

.page-contact .co-scale__num em {
  font-style: normal;
  font-size: .36em;
  font-weight: 700;
  margin-left: 6px;
  letter-spacing: 0;
  color: var(--pomegranate);
}

.page-contact .co-scale__cell:nth-child(2) .co-scale__num {
  color: var(--oasis);
}

.page-contact .co-scale__cell:nth-child(3) .co-scale__num {
  color: var(--pomegranate);
}

.page-contact .co-scale__label {
  display: block;
  margin-top: 10px;
  font-family: var(--font-head);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--indigo);
}

.page-contact .co-support {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  margin-top: clamp(24px, 4vw, 36px);
}

.page-contact .co-support__item {
  min-width: 0;
  border-left: 2px solid var(--gold);
  padding: 2px 0 2px 18px;
}

.page-contact .co-support__item h3 {
  margin: 0;
}

.page-contact .co-support__item p {
  margin: 8px 0 0;
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink);
}

@media (min-width: 640px) {
  .page-contact .co-scale {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-contact .co-scale {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .co-support {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
  }
}

/* ---------- 联系渠道 ---------- */
.page-contact .co-reach {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-contact .co-reach__media {
  margin: 0;
  min-width: 0;
  border: 1px solid var(--line);
  padding: 8px;
  background: var(--sand);
}

.page-contact .co-reach__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .co-reach__media .media-caption {
  padding: 10px 2px 2px;
}

.page-contact .co-reach__panel {
  min-width: 0;
}

.page-contact .co-reach__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--ink);
}

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

.page-contact .co-reach__key {
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--slate);
}

.page-contact .co-reach__val {
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-contact .co-reach__val--mono {
  font-variant-numeric: tabular-nums;
  letter-spacing: .01em;
  color: var(--indigo);
}

.page-contact .co-reach__hint {
  margin: 18px 0 0;
  padding: 14px 16px;
  background: var(--sand);
  border-left: 3px solid var(--pomegranate);
  font-family: var(--font-body);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink);
}

@media (min-width: 640px) {
  .page-contact .co-reach__item {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-contact .co-reach {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(26px, 4vw, 48px);
    align-items: start;
  }
}

/* ---------- 常见问题条 ---------- */
.page-contact .co-faq-strip {
  display: flex;
  gap: 14px;
  margin-top: clamp(22px, 4vw, 36px);
  padding-bottom: 16px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-contact .co-faq-card {
  flex: 0 0 270px;
  max-width: 320px;
  scroll-snap-align: start;
  min-width: 0;
  background: var(--paper);
  border: 1px solid var(--line);
  border-top: 3px solid var(--gold);
  padding: 16px 16px 18px;
  transition: border-color 200ms var(--ease), transform 200ms var(--ease);
}

.page-contact .co-faq-card:hover {
  transform: translateY(-2px);
  border-color: var(--pomegranate);
  border-top-color: var(--pomegranate);
}

.page-contact .co-faq-card h3 {
  margin: 0;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 800;
  line-height: 1.45;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-contact .co-faq-card p {
  margin: 10px 0 0;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink);
}

.page-contact .co-faq-more {
  margin: 18px 0 0;
  font-family: var(--font-head);
  font-size: 14px;
  line-height: 1.9;
  color: var(--indigo);
}

.page-contact .co-faq-more .link-arrow {
  margin-inline: 2px;
}

@media (min-width: 720px) {
  .page-contact .co-faq-card {
    flex: 0 0 320px;
    padding: 18px 18px 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .co-channel,
  .page-contact .co-faq-card {
    transition: none;
  }

  .page-contact .co-channel:hover,
  .page-contact .co-faq-card:hover {
    transform: none;
  }
}