/* =========================================================
   商务合作 /cooperation/
   ========================================================= */

.page-contact {
  --co-desk-w: 336px;
  --co-shell-gap: 40px;
  padding-bottom: 88px;
  color: var(--c-cream);
}

.page-contact .co-inline {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 214, 0.35);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .co-inline:hover,
.page-contact .co-inline:focus-visible {
  color: var(--c-cyan-soft);
  border-bottom-color: var(--c-cyan-soft);
}

/* ---------- 首屏 ---------- */

.page-contact .co-hero {
  display: grid;
  gap: 32px;
  padding: 24px 0 56px;
  border-bottom: 1px solid var(--c-line);
}

.page-contact .co-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-cn);
  font-weight: 900;
  font-size: clamp(30px, 7.4vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  max-width: 15ch;
}

.page-contact .co-hero__lead {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--c-cream);
}

.page-contact .co-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 36px;
  margin: 32px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--c-line);
  list-style: none;
}

.page-contact .co-stat {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-contact .co-stat__num {
  font-size: 26px;
  letter-spacing: 0.04em;
  color: var(--c-cyan);
}

.page-contact .co-stat__label {
  font-size: 13px;
  color: var(--c-mute);
  letter-spacing: 0.02em;
}

.page-contact .co-hero__media {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--c-line);
}

.page-contact .co-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

/* ---------- 主体分栏 ---------- */

.page-contact .co-body {
  display: grid;
  gap: var(--co-shell-gap);
  padding-top: 56px;
}

.page-contact .co-body__main {
  display: flex;
  flex-direction: column;
  gap: 64px;
  min-width: 0;
}

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

.page-contact .co-section__head {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}

.page-contact .co-section__head .section__title {
  margin: 0;
}

.page-contact .co-section__head .section__lead {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  color: var(--c-mute);
}

/* ---------- 合作方向：纯 CSS 选项卡 ---------- */

.page-contact .co-dirs {
  position: relative;
}

.page-contact .co-dirs__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.page-contact .co-dirs__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.page-contact .co-tab {
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-pill);
  background: var(--c-navy);
  font-size: 15px;
  letter-spacing: 0.01em;
  color: var(--c-mute);
  cursor: pointer;
  user-select: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}

.page-contact .co-tab:hover {
  color: var(--c-cream);
  border-color: rgba(143, 233, 226, 0.5);
}

.page-contact #co-dir-1:checked ~ .co-dirs__tabs .co-tab:nth-child(1),
.page-contact #co-dir-2:checked ~ .co-dirs__tabs .co-tab:nth-child(2),
.page-contact #co-dir-3:checked ~ .co-dirs__tabs .co-tab:nth-child(3),
.page-contact #co-dir-4:checked ~ .co-dirs__tabs .co-tab:nth-child(4) {
  color: var(--c-cyan);
  background: rgba(53, 224, 214, 0.1);
  border-color: var(--c-cyan);
  font-weight: 600;
}

.page-contact .co-dirs__radio:focus-visible ~ .co-dirs__tabs .co-tab {
  outline: none;
}

.page-contact #co-dir-1:focus-visible ~ .co-dirs__tabs .co-tab:nth-child(1),
.page-contact #co-dir-2:focus-visible ~ .co-dirs__tabs .co-tab:nth-child(2),
.page-contact #co-dir-3:focus-visible ~ .co-dirs__tabs .co-tab:nth-child(3),
.page-contact #co-dir-4:focus-visible ~ .co-dirs__tabs .co-tab:nth-child(4) {
  outline: 2px solid var(--c-cyan-soft);
  outline-offset: 3px;
}

.page-contact .co-dirs__panel {
  display: none;
}

.page-contact #co-dir-1:checked ~ .co-dirs__panels .co-dirs__panel:nth-child(1),
.page-contact #co-dir-2:checked ~ .co-dirs__panels .co-dirs__panel:nth-child(2),
.page-contact #co-dir-3:checked ~ .co-dirs__panels .co-dirs__panel:nth-child(3),
.page-contact #co-dir-4:checked ~ .co-dirs__panels .co-dirs__panel:nth-child(4) {
  display: block;
  animation: co-panel-in var(--dur) var(--ease) both;
}

@keyframes co-panel-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-contact .co-panel__title {
  margin: 0 0 10px;
  font-family: var(--font-cn);
  font-weight: 800;
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--c-cream);
}

.page-contact .co-panel__lead {
  margin: 0 0 22px;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-cream);
}

.page-contact .co-panel__meta {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--c-line);
}

.page-contact .co-panel__row {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--c-line);
}

.page-contact .co-panel__row dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-cyan);
}

.page-contact .co-panel__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-cream);
}

/* ---------- 四步流程 ---------- */

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

.page-contact .co-step {
  position: relative;
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 20px;
  padding-bottom: 34px;
}

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

.page-contact .co-step::before {
  content: "";
  position: absolute;
  left: 25px;
  top: 52px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--c-line), rgba(19, 41, 61, 0.15));
}

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

.page-contact .co-step__no {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-pill);
  background: var(--c-navy);
  color: var(--c-cyan);
  font-size: 14px;
}

.page-contact .co-step__title {
  margin: 6px 0 8px;
  font-family: var(--font-cn);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--c-cream);
}

.page-contact .co-step__text {
  margin: 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-mute);
}

.page-contact .co-step__time {
  display: inline-block;
  margin-top: 10px;
  font-size: 12px;
  color: var(--c-cyan);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-contact .co-step:hover .co-step__text,
.page-contact .co-step:focus-within .co-step__text {
  color: var(--c-cream);
}

/* ---------- 伙伴分布 ---------- */

.page-contact .co-map {
  display: grid;
  gap: 28px;
}

.page-contact .co-map__board {
  position: relative;
  padding: 20px 18px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-md);
  background: var(--c-navy);
  overflow: hidden;
}

.page-contact .co-dots {
  display: block;
  width: 100%;
  height: auto;
}

.page-contact .co-map__notes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-contact .co-map__notes li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-mute);
}

.page-contact .co-map__notes .dot {
  flex: none;
  margin-top: 8px;
  background: var(--c-cyan);
}

/* ---------- 常见问题手风琴 ---------- */

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

.page-contact .co-faq__item {
  border-bottom: 1px solid var(--c-line);
}

.page-contact .co-faq__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--c-cream);
  cursor: pointer;
  list-style: none;
}

.page-contact .co-faq__q::-webkit-details-marker {
  display: none;
}

.page-contact .co-faq__q:hover {
  color: var(--c-cyan-soft);
}

.page-contact .co-faq__icon {
  flex: none;
  width: 11px;
  height: 11px;
  margin-top: 7px;
  border-right: 1.5px solid var(--c-cyan);
  border-bottom: 1.5px solid var(--c-cyan);
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease);
}

.page-contact .co-faq__item[open] .co-faq__icon {
  transform: rotate(-135deg);
}

.page-contact .co-faq__a {
  padding: 0 0 22px;
}

.page-contact .co-faq__a p {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-mute);
}

.page-contact .co-faq__a .co-inline {
  color: var(--c-cyan-soft);
}

/* ---------- 对接台 ---------- */

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

.page-contact .co-desk {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border-left: 3px solid var(--c-cyan);
  background: var(--c-teal);
}

.page-contact .co-desk__texture {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
  pointer-events: none;
}

.page-contact .co-desk__inner {
  position: relative;
  z-index: 1;
  padding: 28px 24px 24px;
}

.page-contact .co-desk__eyebrow {
  margin: 0;
}

.page-contact .co-desk__title {
  margin: 10px 0 20px;
  font-family: var(--font-cn);
  font-weight: 800;
  font-size: 24px;
  letter-spacing: -0.01em;
  color: var(--c-cream);
}

.page-contact .co-desk__row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 0;
  border-top: 1px solid rgba(143, 233, 226, 0.16);
}

.page-contact .co-desk__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-cyan-soft);
}

.page-contact .co-desk__value {
  font-size: 16px;
  line-height: 1.6;
  color: var(--c-cream);
  word-break: break-word;
}

.page-contact .co-desk__value--addr {
  font-size: 15px;
  line-height: 1.7;
}

.page-contact .co-desk__hint {
  font-size: 13px;
  line-height: 1.65;
  color: var(--c-mute);
}

.page-contact .co-desk__alert {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 20px 0 0;
  padding: 14px 16px;
  border: 1px solid rgba(255, 138, 43, 0.35);
  border-radius: var(--radius-md);
  background: rgba(255, 138, 43, 0.08);
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-cream);
}

.page-contact .co-desk__alert .dot--amber {
  flex: none;
  margin-top: 6px;
}

/* ---------- 响应式 ---------- */

@media (hover: hover) and (pointer: fine) {
  .page-contact .co-step__time {
    opacity: 0.42;
    transform: translateY(3px);
  }

  .page-contact .co-step:hover .co-step__time,
  .page-contact .co-step:focus-within .co-step__time {
    opacity: 1;
    transform: none;
  }
}

@media (min-width: 720px) {
  .page-contact .co-hero {
    padding: 32px 0 64px;
  }

  .page-contact .co-hero__lead {
    font-size: 18px;
  }

  .page-contact .co-map {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: center;
    gap: 36px;
  }

  .page-contact .co-panel__row {
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }
}

@media (min-width: 960px) {
  .page-contact {
    --co-shell-gap: 56px;
    padding-bottom: 120px;
  }

  .page-contact .co-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 56px;
    align-items: end;
    padding: 40px 0 80px;
  }

  .page-contact .co-hero__media {
    border-radius: var(--radius-lg);
  }

  .page-contact .co-body {
    grid-template-columns: minmax(0, 1fr) var(--co-desk-w);
    align-items: start;
    padding-top: 72px;
  }

  .page-contact .co-body__aside {
    position: sticky;
    top: 32px;
  }

  .page-contact .co-body__main {
    gap: 72px;
  }

  .page-contact .co-faq__q {
    font-size: 17px;
  }
}

@media (min-width: 1180px) {
  .page-contact {
    --co-desk-w: 360px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-contact #co-dir-1:checked ~ .co-dirs__panels .co-dirs__panel:nth-child(1),
  .page-contact #co-dir-2:checked ~ .co-dirs__panels .co-dirs__panel:nth-child(2),
  .page-contact #co-dir-3:checked ~ .co-dirs__panels .co-dirs__panel:nth-child(3),
  .page-contact #co-dir-4:checked ~ .co-dirs__panels .co-dirs__panel:nth-child(4) {
    animation: none;
  }

  .page-contact .co-step__time,
  .page-contact .co-faq__icon {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>