.page-partners {
  --p-rail-gap: var(--space-4);
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-partners .eyebrow {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  color: var(--color-primary);
  margin: 0;
}

.page-partners .link-inline {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-thickness: var(--border-thin);
  text-underline-offset: 3px;
}

.page-partners .link-inline:hover,
.page-partners .link-inline:focus-visible {
  color: var(--color-primary);
}

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

/* ---------- 首屏 ---------- */

.page-partners .hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding: calc(var(--space-8) + var(--space-4)) 0 var(--space-8);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 3vw), 0 100%);
}

.page-partners .hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-partners .hero__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
}

.page-partners .hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: var(--overlay-scrim);
}

.page-partners .hero::before {
  content: "";
  position: absolute;
  inset: -10% 0;
  z-index: 1;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    180deg,
    transparent 0 3px,
    color-mix(in srgb, var(--color-contrast-line) 60%, transparent) 3px 4px
  );
  opacity: 0.45;
  animation: p-partners-scan 11s linear infinite;
}

@keyframes p-partners-scan {
  from { transform: translateY(0); }
  to { transform: translateY(-24px); }
}

.page-partners .hero__rail {
  position: absolute;
  top: -8%;
  bottom: -8%;
  left: var(--space-3);
  width: var(--border-thick);
  z-index: 2;
  transform: rotate(2.4deg);
  transform-origin: top center;
  background-image: repeating-linear-gradient(
    180deg,
    var(--color-primary) 0 16px,
    transparent 16px 38px
  );
}

.page-partners .hero__inner {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3);
  padding-inline-start: calc(var(--space-3) + var(--space-2));
}

.page-partners .hero__eyebrow {
  color: var(--color-primary);
}

.page-partners .hero__title {
  margin: 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-contrast-ink);
  text-wrap: balance;
}

.page-partners .hero__lower {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-3);
}

.page-partners .hero__lede {
  max-width: var(--measure);
  margin: 0;
  color: color-mix(in srgb, var(--color-contrast-ink) 82%, transparent);
  font-size: var(--text-base);
  line-height: var(--leading-body);
}

.page-partners .hero__figures {
  list-style: none;
  margin: 0;
  padding: var(--space-4) 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-partners .hero__figure {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
}

.page-partners .hero__figure-num {
  font-family: var(--font-mono);
  font-weight: var(--weight-heading);
  font-size: var(--text-figure);
  line-height: 1;
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-accent);
}

.page-partners .hero__figure-unit {
  font-size: var(--text-sm);
  color: color-mix(in srgb, var(--color-contrast-ink) 76%, transparent);
}

/* ---------- 通用小标题 ---------- */

.page-partners .sechead {
  max-width: var(--measure);
  margin-bottom: var(--space-8);
}

.page-partners .sechead__title {
  margin: var(--space-2) 0 var(--space-3);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-3xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-partners .sechead__lede {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 三条主线 ---------- */

.page-partners .lines {
  padding: var(--section-y-lg) 0 var(--section-y);
  background: var(--color-surface);
}

.page-partners .line {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
  padding: var(--space-6) 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-partners .line::before {
  content: "";
  position: absolute;
  top: calc(-1 * var(--border-thin));
  left: 0;
  width: 88px;
  height: var(--border-thick);
  background: var(--color-primary);
}

.page-partners .line__index {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  color: var(--color-accent);
}

.page-partners .line__name {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

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

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

.page-partners .line__points li {
  position: relative;
  padding-inline-start: var(--space-3);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-partners .line__points li::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: 0.65em;
  width: var(--space-2);
  height: var(--border-thin);
  background: var(--color-primary);
}

.page-partners .line__media {
  margin: 0;
  min-width: 0;
}

.page-partners .line__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-2);
}

.page-partners .line__media .media__caption {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

/* ---------- 时间线 ---------- */

.page-partners .timeline {
  padding-bottom: var(--section-y-lg);
  background: var(--color-surface);
}

.page-partners .tl-seg {
  background: var(--color-surface-alt);
  padding-block: var(--space-6);
}

.page-partners .tl-seg--deep {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-partners .tl {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-partners .tl::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: var(--border-thin);
  background-image: repeating-linear-gradient(
    180deg,
    var(--color-primary) 0 12px,
    transparent 12px 28px
  );
}

.page-partners .tl-seg--deep .tl::before {
  background-image: repeating-linear-gradient(
    180deg,
    var(--color-contrast-accent) 0 12px,
    transparent 12px 28px
  );
}

.page-partners .tl-node {
  position: relative;
  padding-block: var(--space-4);
  padding-inline-start: var(--space-6);
}

.page-partners .tl-node__card {
  position: relative;
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  padding: var(--space-4) var(--space-4) var(--space-4) calc(var(--space-4) + var(--space-1));
  box-shadow: var(--shadow-1);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.page-partners .tl-seg--deep .tl-node__card {
  background: color-mix(in srgb, var(--color-contrast-ink) 8%, var(--color-contrast-surface));
  box-shadow: var(--shadow-1);
}

.page-partners .tl-node__card::before {
  content: "";
  position: absolute;
  inset-block: 0;
  inset-inline-start: 0;
  width: var(--border-thick);
  background: var(--color-primary);
  border-start-start-radius: var(--radius-sm);
  border-end-start-radius: var(--radius-sm);
}

.page-partners .tl-seg--deep .tl-node__card::before {
  background: var(--color-contrast-accent);
}

.page-partners .tl-node:hover .tl-node__card,
.page-partners .tl-node:focus-within .tl-node__card {
  transform: translate(-3px, -3px);
}

.page-partners .tl-node__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-3);
}

.page-partners .tl-node__ord {
  font-family: var(--font-mono);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: 1;
  letter-spacing: var(--tracking-heading);
  color: var(--color-primary);
}

.page-partners .tl-seg--deep .tl-node__ord {
  color: var(--color-contrast-accent);
}

.page-partners .tl-node__state {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
  margin-inline-start: auto;
}

.page-partners .tl-seg--deep .tl-node__state {
  color: color-mix(in srgb, var(--color-contrast-ink) 68%, transparent);
}

.page-partners .tl-node__title {
  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);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-partners .tl-seg--deep .tl-node__title {
  color: var(--color-contrast-ink);
}

.page-partners .tl-node__problem {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-partners .tl-seg--deep .tl-node__problem {
  color: color-mix(in srgb, var(--color-contrast-ink) 80%, transparent);
}

.page-partners .tl-node__more {
  margin-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-partners .tl-seg--deep .tl-node__more {
  border-top-color: var(--color-contrast-line);
}

.page-partners .tl-node__more .collapse__head {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  list-style: none;
  padding-top: var(--space-3);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-sm);
  letter-spacing: 0.02em;
  color: var(--color-accent);
}

.page-partners .tl-seg--deep .tl-node__more .collapse__head {
  color: var(--color-contrast-accent);
}

.page-partners .tl-node__more .collapse__head::-webkit-details-marker {
  display: none;
}

.page-partners .tl-node__more .collapse__head::after {
  content: "+";
  margin-inline-start: auto;
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  line-height: 1;
  color: var(--color-primary);
}

.page-partners .tl-seg--deep .tl-node__more .collapse__head::after {
  color: var(--color-primary);
}

.page-partners .tl-node__more[open] .collapse__head::after {
  content: "–";
}

.page-partners .tl-fields {
  margin: 0;
  padding: var(--space-3) 0 0;
  display: grid;
  gap: var(--space-3);
}

.page-partners .tl-field {
  display: grid;
  gap: var(--space-1);
}

.page-partners .tl-field dt {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}

.page-partners .tl-seg--deep .tl-field dt {
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

.page-partners .tl-field dd {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-partners .tl-seg--deep .tl-field dd {
  color: var(--color-contrast-ink);
}

/* ---------- 协作方式与边界 ---------- */

.page-partners .bounds {
  padding: var(--section-y-lg) 0 var(--section-y);
  background: var(--color-surface-deep);
}

.page-partners .bounds__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
}

.page-partners .bound {
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  padding: var(--space-4);
  box-shadow: var(--shadow-1);
}

.page-partners .bound__title {
  margin: var(--space-3) 0 var(--space-2);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

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

.page-partners .bound__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
  padding-top: var(--space-3);
}

.page-partners .bound__list li {
  position: relative;
  padding-inline-start: var(--space-3);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-partners .bound__list li::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: 0.7em;
  width: var(--space-2);
  height: var(--border-thin);
  background: var(--color-accent);
}

.page-partners .bounds__note {
  margin: var(--space-6) 0 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  padding-inline-start: var(--space-4);
  border-inline-start: var(--border-thick) solid var(--color-primary);
}

/* ---------- 对接入口 ---------- */

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

.page-partners .reach__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-8);
}

.page-partners .reach__eyebrow {
  color: var(--color-contrast-accent);
}

.page-partners .reach__title {
  margin: var(--space-2) 0 var(--space-6);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-3xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

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

.page-partners .reach__step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-partners .reach__step-key {
  font-family: var(--font-mono);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  color: var(--color-contrast-accent);
}

.page-partners .reach__step-title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.page-partners .reach__step p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 76%, transparent);
}

.page-partners .reach__aside {
  background: color-mix(in srgb, var(--color-contrast-ink) 8%, var(--color-contrast-surface));
  border-radius: var(--radius-sm);
  padding: var(--space-4);
  border-inline-start: var(--border-thick) solid var(--color-primary);
}

.page-partners .reach__aside-lede {
  margin: 0 0 var(--space-4);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
}

.page-partners .reach__contact {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: baseline;
  margin: 0 0 var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-base);
  color: var(--color-contrast-ink);
  word-break: break-word;
}

.page-partners .reach__contact-label {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

.page-partners .reach__note {
  margin: var(--space-4) 0 var(--space-4);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 74%, transparent);
}

.page-partners .reach__cta {
  display: inline-block;
}

.page-partners .reach__back {
  margin: var(--space-4) 0 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 74%, transparent);
}

.page-partners .reach__back .link-inline {
  color: var(--color-contrast-accent);
}

.page-partners .reach__back .link-inline:hover,
.page-partners .reach__back .link-inline:focus-visible {
  color: var(--color-primary);
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-partners .hero__lower {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: end;
    gap: var(--space-8);
  }

  .page-partners .bounds__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-partners .line {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--space-8);
    align-items: center;
  }

  .page-partners .line--flip .line__text {
    order: 2;
  }

  .page-partners .line--flip .line__media {
    order: 1;
  }
}

@media (min-width: 900px) {
  .page-partners {
    --p-rail-gap: var(--space-8);
  }

  .page-partners .hero__rail {
    left: var(--space-4);
  }

  .page-partners .hero__inner {
    padding-inline-start: calc(var(--space-4) + var(--space-6));
  }

  .page-partners .sechead__title {
    font-size: var(--text-4xl);
  }

  .page-partners .line__name {
    font-size: var(--text-2xl);
  }

  .page-partners .tl {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: var(--space-3);
  }

  .page-partners .tl::before {
    left: 50%;
    top: 0;
    bottom: 0;
  }

  .page-partners .tl-node {
    padding-inline-start: 0;
    padding-block: var(--space-6);
  }

  .page-partners .tl-node--left {
    grid-column: 1 / span 6;
    padding-inline-end: var(--space-4);
  }

  .page-partners .tl-node--right {
    grid-column: 7 / span 6;
    padding-inline-start: var(--space-4);
  }

  .page-partners .bounds__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-partners .reach__inner {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    gap: var(--space-8);
    align-items: start;
  }
}

@media (min-width: 1100px) {
  .page-partners .hero {
    padding: calc(var(--space-8) + var(--space-8)) 0 var(--space-8);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-partners .hero::before {
    animation: none;
  }

  .page-partners .tl-node__card {
    transition: none;
  }

  .page-partners .tl-node:hover .tl-node__card,
  .page-partners .tl-node:focus-within .tl-node__card {
    transform: none;
  }
}