.page-partners {
  --coop-panel-pad: var(--space-4);
}

.page-partners :focus-visible {
  outline: var(--border-thick) solid currentColor;
  outline-offset: 2px;
}

.page-partners a:not(.btn) {
  color: inherit;
  text-underline-offset: 3px;
}

/* ---------- 首屏 ---------- */

.page-partners .coop-hero {
  background: var(--color-surface);
  padding-top: var(--space-6);
}

.page-partners .coop-hero .breadcrumb {
  margin-bottom: var(--space-4);
}

.page-partners .coop-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  padding-bottom: var(--section-y);
}

.page-partners .coop-hero__title {
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  margin: 0 0 var(--space-4);
  max-width: 12ch;
}

.page-partners .coop-hero__lead .lead {
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-partners .coop-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.page-partners .coop-hero__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
  align-content: start;
}

.page-partners .coop-stat {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-3);
  background: var(--color-primary);
  color: var(--color-primary-ink);
  border-radius: var(--radius-md);
}

.page-partners .coop-stat--dark {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-accent);
}

.page-partners .coop-stat__num {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.04em;
}

.page-partners .coop-stat__label {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 700;
}

.page-partners .coop-stat__note {
  font-size: var(--text-sm);
  opacity: 0.82;
}

/* 主色带 */

.page-partners .coop-hero__band {
  background: var(--color-primary);
  color: var(--color-primary-ink);
  padding: var(--space-8) 0;
}

.page-partners .coop-hero__band-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  align-items: center;
}

.page-partners .coop-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-partners .coop-index__list a {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-2);
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: 700;
  border-top: var(--border-thin) solid color-mix(in srgb, currentColor 38%, transparent);
  transition: background-color 180ms ease, color 180ms ease;
}

.page-partners .coop-index__list li:last-child a {
  border-bottom: var(--border-thin) solid color-mix(in srgb, currentColor 38%, transparent);
}

.page-partners .coop-index__list a:hover,
.page-partners .coop-index__list a:focus-visible {
  background: var(--color-primary-ink);
  color: var(--color-primary);
}

.page-partners .coop-index__list .num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.02em;
  opacity: 0.86;
}

.page-partners .coop-hero__figure {
  margin: 0;
}

.page-partners .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 五类协作色块 ---------- */

.page-partners .coop-block {
  padding: var(--section-y) 0;
  position: relative;
}

.page-partners .coop-block--surface {
  background: var(--color-surface);
  color: var(--color-ink);
}

.page-partners .coop-block--dark {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-partners .coop-block--primary {
  background: var(--color-primary);
  color: var(--color-primary-ink);
}

.page-partners .coop-block--accent {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

.page-partners .coop-block__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.page-partners .coop-block__tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  margin: 0 0 var(--space-3);
  padding: var(--space-1) var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  background: var(--color-contrast-surface);
  color: var(--color-contrast-accent);
  border-radius: var(--radius-sm);
  transition: background-color 180ms ease, color 180ms ease;
}

.page-partners .coop-block__tag:hover {
  background: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
}

.page-partners .coop-block--dark .coop-block__tag {
  background: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
}

.page-partners .coop-block--dark .coop-block__tag:hover {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-accent);
}

.page-partners .coop-block--primary .coop-block__tag {
  background: var(--color-primary-ink);
  color: var(--color-primary);
}

.page-partners .coop-block--primary .coop-block__tag:hover {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-accent);
}

.page-partners .coop-block--accent .coop-block__tag {
  background: var(--color-accent-ink);
  color: var(--color-accent);
}

.page-partners .coop-block--accent .coop-block__tag:hover {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-accent);
}

.page-partners .coop-block__main h2 {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  margin: 0 0 var(--space-3);
  max-width: 20ch;
}

.page-partners .coop-block__main > p {
  max-width: var(--measure);
  margin: 0 0 var(--space-3);
}

.page-partners .coop-block__link {
  font-size: var(--text-base);
  color: inherit;
  opacity: 0.92;
}

.page-partners .coop-block__link a {
  font-weight: 700;
  text-decoration: underline;
}

.page-partners .coop-spec {
  margin: var(--space-4) 0 0;
  border-top: var(--border-thick) solid currentColor;
}

.page-partners .coop-spec__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-1);
  padding: var(--space-2) 0;
  border-bottom: var(--border-thin) solid color-mix(in srgb, currentColor 26%, transparent);
}

.page-partners .coop-spec dt {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.06em;
  opacity: 0.8;
}

.page-partners .coop-spec dd {
  margin: 0;
  max-width: var(--measure);
}

.page-partners .coop-block__aside {
  display: grid;
  gap: var(--space-3);
  align-content: start;
}

.page-partners .coop-status {
  justify-self: start;
  display: inline-block;
  padding: var(--space-1) var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  background: var(--color-contrast-surface);
  color: var(--color-contrast-accent);
  border-radius: var(--radius-sm);
  transition: background-color 180ms ease, color 180ms ease;
}

.page-partners .coop-status:hover,
.page-partners .coop-status:focus-visible {
  background: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
}

.page-partners .coop-block--dark .coop-status {
  background: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
}

.page-partners .coop-block--dark .coop-status:hover,
.page-partners .coop-block--dark .coop-status:focus-visible {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-accent);
}

.page-partners .coop-block--primary .coop-status {
  background: var(--color-primary-ink);
  color: var(--color-primary);
}

.page-partners .coop-block--accent .coop-status {
  background: var(--color-accent-ink);
  color: var(--color-accent);
}

.page-partners .coop-block__figure {
  margin: 0;
}

.page-partners .coop-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-partners .coop-points li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-2);
  font-size: var(--text-base);
  max-width: var(--measure);
}

.page-partners .coop-points li::before {
  content: "";
  width: var(--space-1);
  height: var(--space-1);
  margin-top: 0.6em;
  background: currentColor;
}

/* ---------- 对接路径与边界 ---------- */

.page-partners .coop-steps {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-4);
}

.page-partners .coop-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-3);
  padding-top: var(--space-3);
  border-top: var(--border-thick) solid currentColor;
}

.page-partners .coop-step__num {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-primary);
}

.page-partners .coop-step h3 {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  margin: 0 0 var(--space-1);
  line-height: var(--leading-heading);
}

.page-partners .coop-step p {
  margin: 0;
  max-width: var(--measure);
}

.page-partners .coop-boundary {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding: var(--coop-panel-pad);
}

.page-partners .coop-boundary__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  margin: 0 0 var(--space-3);
  color: var(--color-contrast-accent);
}

.page-partners .coop-boundary__list {
  position: relative;
  padding: var(--space-1) 0;
  border-top: var(--border-thick) solid var(--color-contrast-line);
  border-bottom: var(--border-thick) solid var(--color-contrast-line);
}

.page-partners .coop-boundary__list::before,
.page-partners .coop-boundary__list::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: var(--border-thin);
  background: var(--color-contrast-line);
}

.page-partners .coop-boundary__list::before {
  top: calc(var(--border-thick) + var(--space-1) / 4);
}

.page-partners .coop-boundary__list::after {
  bottom: calc(var(--border-thick) + var(--space-1) / 4);
}

.page-partners .coop-boundary__item {
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.page-partners .coop-boundary__item:last-child {
  border-bottom: 0;
}

.page-partners .coop-boundary__item summary {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-1);
  cursor: pointer;
  list-style: none;
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 700;
  transition: background-color 180ms ease, color 180ms ease;
}

.page-partners .coop-boundary__item summary::-webkit-details-marker {
  display: none;
}

.page-partners .coop-boundary__item summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  color: var(--color-contrast-accent);
}

.page-partners .coop-boundary__item[open] summary::after {
  content: "−";
}

.page-partners .coop-boundary__item summary:hover,
.page-partners .coop-boundary__item summary:focus-visible {
  background: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
}

.page-partners .coop-boundary__item summary:hover .num,
.page-partners .coop-boundary__item summary:focus-visible .num {
  color: var(--color-contrast-surface);
}

.page-partners .coop-boundary__item summary .num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-contrast-accent);
}

.page-partners .coop-boundary__item p {
  margin: 0 0 var(--space-3);
  padding: 0 var(--space-1);
  font-size: var(--text-sm);
  opacity: 0.84;
  max-width: var(--measure);
}

/* ---------- 结尾出口 ---------- */

.page-partners .coop-cta {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding: var(--section-y) 0;
}

.page-partners .coop-cta__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.page-partners .coop-cta__eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-contrast-accent);
  margin: 0 0 var(--space-2);
}

.page-partners .coop-cta h2 {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  margin: 0 0 var(--space-3);
  max-width: 24ch;
}

.page-partners .coop-cta p {
  margin: 0;
  max-width: var(--measure);
  color: var(--color-contrast-ink);
  opacity: 0.9;
}

.page-partners .coop-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-content: end;
}

/* ---------- 桌面栅格 ---------- */

@media (min-width: 640px) {
  .page-partners .coop-spec__row {
    grid-template-columns: 7ch 1fr;
    gap: var(--space-3);
    align-items: baseline;
  }

  .page-partners .coop-hero__stats {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .page-partners .coop-hero__grid {
    grid-template-columns: 8fr 4fr;
    gap: var(--space-8);
    align-items: start;
  }

  .page-partners .coop-hero__stats {
    grid-template-columns: 1fr;
  }

  .page-partners .coop-hero__band-inner {
    grid-template-columns: 5fr 7fr;
    gap: var(--space-8);
  }

  .page-partners .coop-block {
    padding: var(--section-y-lg) 0;
  }

  .page-partners .coop-block__inner {
    grid-template-columns: 7fr 5fr;
    gap: var(--space-8);
    align-items: start;
  }

  .page-partners .coop-block--flip .coop-block__inner {
    grid-template-columns: 5fr 7fr;
  }

  .page-partners .coop-block--flip .coop-block__aside {
    order: -1;
  }

  .page-partners .coop-cta__inner {
    grid-template-columns: 7fr 5fr;
    align-items: end;
  }
}

@media (min-width: 1120px) {
  .page-partners .coop-hero__stats {
    gap: var(--space-3);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-partners .coop-index__list a,
  .page-partners .coop-block__tag,
  .page-partners .coop-status,
  .page-partners .coop-boundary__item summary {
    transition: none;
  }
}