/* ==========================================================================
   生态体系 /ecosystem/ — 页面专属样式
   作用域：.page-partners
   ========================================================================== */

.page-partners {
  --eco-gap: 2px;
}

/* ---------- 首屏：五段纵向色块 + 横跨内容带 ---------- */

.page-partners .eco-hero {
  position: relative;
  overflow: clip;
  display: grid;
  align-items: center;
  min-height: clamp(440px, 60vh, 660px);
  padding-block: var(--section-y-lg);
}

.page-partners .eco-hero__field {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--eco-gap);
  background-color: var(--color-surface);
}

.page-partners .eco-stripe {
  display: block;
  min-width: 0;
}

.page-partners .eco-stripe--1 { background-color: var(--color-primary); }
.page-partners .eco-stripe--2 { background-color: var(--color-accent); }
.page-partners .eco-stripe--3 { background-color: var(--color-contrast-surface); }
.page-partners .eco-stripe--4 { background-color: var(--color-surface-alt); }
.page-partners .eco-stripe--5 { background-color: var(--color-surface-deep); }

.page-partners .eco-hero__panel {
  position: relative;
  z-index: 2;
  width: min(calc(100% - var(--space-4)), var(--container));
  margin-inline: auto;
  padding: var(--space-6) var(--space-4);
  background-color: var(--color-surface);
  border-block: var(--border-thick) solid var(--color-ink);
}

.page-partners .eco-hero__title {
  margin: var(--space-3) 0 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-display);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  overflow-wrap: anywhere;
}

.page-partners .eco-hero__lede {
  max-width: var(--measure);
  margin: var(--space-4) 0 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-partners .eco-stat {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
  margin: var(--space-6) 0 0;
  padding-top: var(--space-4);
  border-top: var(--border-thick) solid var(--color-line);
}

.page-partners .eco-stat__item { margin: 0; }

.page-partners .eco-stat dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}

.page-partners .eco-stat dd {
  margin: var(--space-1) 0 0;
  display: flex;
  align-items: baseline;
  gap: var(--space-1);
  flex-wrap: wrap;
}

.page-partners .eco-stat__num {
  font-family: var(--font-mono);
  font-weight: var(--weight-heading);
  font-size: var(--text-figure);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-primary);
}

.page-partners .eco-stat__item:nth-child(2) .eco-stat__num { color: var(--color-accent); }
.page-partners .eco-stat__item:nth-child(3) .eco-stat__num { color: var(--color-ink); }

.page-partners .eco-stat__unit {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

/* ---------- 图片处理 ---------- */

.page-partners img {
  max-width: 100%;
  height: auto;
}

.page-partners .eco-plate {
  margin: var(--section-y) 0 0;
}

.page-partners .eco-plate .figure__media,
.page-partners .eco-texture .figure__media,
.page-partners .eco-stages__figure .figure__media {
  overflow: clip;
  border: var(--border-thick) solid var(--color-ink);
}

.page-partners .eco-plate .figure__media img,
.page-partners .eco-texture .figure__media img,
.page-partners .eco-stages__figure .figure__media img,
.page-partners .eco-bounds__aside .figure__media img {
  display: block;
  width: 100%;
  object-fit: cover;
}

/* ---------- 目录区 ---------- */

.page-partners .eco-catalog__head {
  max-width: var(--measure);
}

.page-partners .eco-catalog__head h2,
.page-partners .eco-bounds__main h2,
.page-partners .eco-stages__head h2,
.page-partners .eco-join__lead h2 {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-2xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  overflow-wrap: anywhere;
}

.page-partners .eco-catalog__head p,
.page-partners .eco-stages__head p,
.page-partners .eco-join__lead p {
  margin: var(--space-3) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-partners .eco-texture {
  margin: var(--space-6) 0 0;
}

.page-partners .eco-texture .figure__media img {
  max-height: 300px;
}

.page-partners .filter-bar {
  margin-block: var(--space-6) var(--space-4);
}

.page-partners .eco-groups {
  border-bottom: var(--border-thick) solid var(--color-ink);
}

.page-partners .eco-group {
  padding-block: var(--space-6);
  border-top: var(--border-thick) solid var(--color-ink);
}

.page-partners .eco-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  align-items: center;
  margin-bottom: var(--space-4);
}

.page-partners .eco-group__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 58px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  letter-spacing: 0.02em;
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.page-partners .eco-group:nth-child(even) .eco-group__badge {
  background-color: var(--color-accent);
  color: var(--color-accent-ink);
}

.page-partners .eco-group:nth-child(3) .eco-group__badge {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-accent);
}

.page-partners .eco-group__title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xl);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-partners .eco-group__desc {
  margin: var(--space-1) 0 0;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

.page-partners .eco-group__desc a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-partners .eco-entries {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-partners .eco-entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-2) var(--space-3);
  align-items: center;
  padding-block: var(--space-4);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-partners .eco-entry__num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
}

.page-partners .eco-entry__body {
  grid-column: 1 / -1;
  min-width: 0;
}

.page-partners .eco-entry__title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-partners .eco-entry__desc {
  margin: var(--space-1) 0 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-partners .eco-entry__cond {
  margin: var(--space-2) 0 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  line-height: 1.8;
  color: var(--color-ink-muted);
}

.page-partners .eco-entry .chip {
  justify-self: start;
}

/* ---------- 边界说明 ---------- */

.page-partners .eco-bounds__grid {
  display: grid;
  gap: var(--space-8);
}

.page-partners .eco-bounds__intro {
  max-width: var(--measure);
  margin: var(--space-3) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-partners .eco-bounds__intro a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-partners .eco-bounds__list {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-3);
}

.page-partners .eco-bounds__item {
  padding: var(--space-4);
  border-left: var(--border-thick) solid var(--color-accent);
  background-color: var(--color-surface);
}

.page-partners .eco-bounds__item h3 {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-partners .eco-bounds__item p {
  margin: var(--space-1) 0 0;
  font-size: var(--text-sm);
  line-height: 1.75;
  color: var(--color-ink-soft);
}

.page-partners .eco-bounds__item strong {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-accent);
  margin-right: var(--space-1);
}

.page-partners .eco-bounds__aside .figure {
  margin: 0;
}

.page-partners .eco-bounds__aside .figure__media {
  border: var(--border-thick) solid var(--color-ink);
  overflow: clip;
}

/* ---------- 阶段说明 ---------- */

.page-partners .eco-stages__head {
  max-width: var(--measure);
}

.page-partners .eco-stages__list {
  list-style: none;
  counter-reset: eco-stage;
  margin: var(--space-6) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-4);
}

.page-partners .eco-stage {
  position: relative;
  padding-top: var(--space-8);
  border-top: var(--border-thick) solid var(--color-line);
}

.page-partners .eco-stage::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 62px;
  height: 31px;
  border-radius: var(--radius-pill) var(--radius-pill) 0 0;
  background-color: var(--color-primary);
}

.page-partners .eco-stage:nth-child(3)::before { background-color: var(--color-accent); }
.page-partners .eco-stage:nth-child(4)::before { background-color: var(--color-contrast-surface); }

.page-partners .eco-stage__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.16em;
  color: var(--color-ink-muted);
}

.page-partners .eco-stage h3 {
  margin: var(--space-1) 0 var(--space-2);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xl);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-partners .eco-stage p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.75;
  color: var(--color-ink-soft);
}

.page-partners .eco-stage__state {
  margin-top: var(--space-3) !important;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-partners .eco-stages__figure {
  margin: var(--space-8) 0 0;
}

/* ---------- 对接区块（反相） ---------- */

.page-partners .eco-join {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-partners .eco-join__inner {
  display: grid;
  gap: var(--space-6);
}

.page-partners .eco-join__eyebrow {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  color: var(--color-contrast-accent);
}

.page-partners .eco-join__lead h2 {
  color: var(--color-contrast-ink);
}

.page-partners .eco-join__lead p {
  color: var(--color-contrast-ink);
  opacity: 0.82;
  max-width: var(--measure);
}

.page-partners .eco-join__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-3);
  border-top: var(--border-thick) solid var(--color-contrast-line);
  padding-top: var(--space-4);
}

.page-partners .eco-join__steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  align-items: start;
}

.page-partners .eco-join__step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-pill);
  background-color: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
}

.page-partners .eco-join__steps p {
  margin: 0;
  padding-top: var(--space-1);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
}

.page-partners .eco-join__foot {
  display: grid;
  gap: var(--space-4);
  padding-top: var(--space-4);
  border-top: var(--border-thick) solid var(--color-contrast-line);
}

.page-partners .eco-join__foot p {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: 1.75;
  color: var(--color-contrast-ink);
  opacity: 0.86;
}

.page-partners .eco-join__foot a {
  color: var(--color-contrast-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-partners .eco-join__foot .btn {
  justify-self: start;
}

/* ---------- 焦点可见性 ---------- */

.page-partners a:focus-visible,
.page-partners button:focus-visible {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: 3px;
}

.page-partners .eco-join a:focus-visible,
.page-partners .eco-join button:focus-visible {
  outline-color: var(--color-contrast-accent);
}

/* ==========================================================================
   媒体查询
   ========================================================================== */

@media (min-width: 600px) {
  .page-partners .eco-hero__panel {
    padding: var(--space-8) var(--space-6);
  }

  .page-partners .eco-texture .figure__media img {
    max-height: 420px;
  }

  .page-partners .eco-stages__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-6);
  }

  .page-partners .eco-join__foot {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }
}

@media (min-width: 900px) {
  .page-partners .eco-hero {
    min-height: clamp(500px, 62vh, 700px);
  }

  .page-partners .eco-hero__panel {
    padding: var(--space-8) var(--space-8);
  }

  .page-partners .eco-catalog__head,
  .page-partners .eco-stages__head {
    max-width: none;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--space-8);
    align-items: end;
  }

  .page-partners .eco-catalog__head p,
  .page-partners .eco-stages__head p {
    margin-top: 0;
  }

  .page-partners .eco-entry {
    grid-template-columns: 118px minmax(0, 1fr) auto;
    align-items: start;
    gap: var(--space-4);
  }

  .page-partners .eco-entry__num {
    grid-column: 1;
    grid-row: 1;
    padding-top: 6px;
  }

  .page-partners .eco-entry__body {
    grid-column: 2;
    grid-row: 1;
  }

  .page-partners .eco-entry .chip {
    grid-column: 3;
    grid-row: 1;
    justify-self: end;
  }

  .page-partners .eco-bounds__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-partners .eco-bounds__aside {
    position: sticky;
    top: var(--space-6);
  }

  .page-partners .eco-stages__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-partners .eco-join__inner {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-partners .eco-join__lead {
    grid-column: 1;
  }

  .page-partners .eco-join__steps {
    grid-column: 2;
    grid-row: 1;
    border-top: none;
    padding-top: 0;
  }

  .page-partners .eco-join__foot {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1180px) {
  .page-partners .eco-texture .figure__media img {
    max-height: 460px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-partners * {
    transition-duration: 0.01ms;
    animation-duration: 0.01ms;
  }
}