.page-partners {
  --pt-hero-pad: var(--space-6);
  --pt-radius: var(--radius-md);
}

/* ---------- 首屏 ---------- */
.page-partners .pt-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: var(--pt-hero-pad) var(--space-6);
  background-color: var(--color-surface);
}

.page-partners .pt-hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-partners .pt-hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-width: 100%;
}

.page-partners .pt-hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--color-surface) 78%, transparent) 0%,
    color-mix(in srgb, var(--color-surface) 92%, transparent) 58%,
    var(--color-surface) 100%
  );
}

.page-partners .pt-hero-inner {
  position: relative;
}

.page-partners .pt-hero-grid {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-6);
  align-items: end;
}

.page-partners .pt-h1-main {
  display: block;
  font-size: var(--text-display);
  line-height: 1.02;
  letter-spacing: -0.02em;
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-partners .pt-h1-sub {
  display: block;
  margin-top: var(--space-3);
  font-size: var(--text-lg);
  font-weight: var(--weight-body);
  line-height: 1.5;
  letter-spacing: 0;
  color: var(--color-ink-soft);
}

.page-partners .pt-lead {
  max-width: var(--measure);
  margin-top: var(--space-4);
}

.page-partners .pt-lead a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--color-accent) 45%, transparent);
  transition: border-color 140ms ease, color 140ms ease;
}

.page-partners .pt-lead a:hover,
.page-partners .pt-lead a:focus-visible {
  border-bottom-color: var(--color-accent);
}

.page-partners .pt-hero-figures {
  display: flex;
  gap: var(--space-6);
  align-items: flex-end;
  flex-wrap: wrap;
}

.page-partners .pt-figure {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.page-partners .pt-figure .figure {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  line-height: 1;
  color: var(--color-accent);
  transition: color 160ms ease;
}

.page-partners .pt-figure:hover .figure {
  color: var(--color-focus);
}

.page-partners .pt-figure-label {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  letter-spacing: 0.04em;
}

/* 类型刻度带 */
.page-partners .pt-scale {
  position: relative;
  margin-top: var(--space-6);
  padding-top: var(--space-4);
}

.page-partners .pt-scale::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 7px;
  background-image: repeating-linear-gradient(
    to right,
    var(--color-line) 0 1px,
    transparent 1px 12px
  );
}

.page-partners .pt-scale-track {
  display: flex;
  gap: var(--space-2);
  margin: 0;
  padding: 0 0 var(--space-1);
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-partners .pt-scale-item {
  flex: 0 0 auto;
  scroll-snap-align: start;
}

.page-partners .pt-scale-link {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--pt-radius);
  background-color: color-mix(in srgb, var(--color-surface-alt) 60%, transparent);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 140ms ease, background-color 140ms ease;
}

.page-partners .pt-scale-link:hover,
.page-partners .pt-scale-link:focus-visible {
  border-color: var(--color-accent);
  background-color: var(--color-primary-soft);
}

.page-partners .pt-scale-idx {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent);
  letter-spacing: 0.08em;
}

.page-partners .pt-scale-name {
  font-size: var(--text-sm);
  color: var(--color-ink);
}

/* ---------- 类型总览 ---------- */
.page-partners .pt-overview .section-head {
  max-width: 62ch;
}

.page-partners .pt-diagram {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  margin-block: var(--space-6) var(--space-4);
  color: color-mix(in srgb, var(--color-line) 88%, transparent);
}

.page-partners .pt-diagram .pt-node {
  fill: var(--color-line);
}

.page-partners .pt-diagram .pt-node-hub {
  fill: var(--color-accent);
}

.page-partners .pt-types {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-partners .pt-type {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: var(--space-2) var(--space-3);
  padding-block: var(--space-4);
  border-top: var(--border-thin) solid var(--color-line);
  align-items: start;
}

.page-partners .pt-type-idx {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-primary);
  letter-spacing: 0.06em;
  padding-top: 3px;
}

.page-partners .pt-type-name {
  margin: 0;
  color: var(--color-ink);
}

.page-partners .pt-type-desc {
  grid-column: 2;
  margin: 0;
  max-width: 62ch;
  font-size: var(--text-base);
  color: var(--color-ink-soft);
}

.page-partners .pt-type-desc a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--color-accent) 42%, transparent);
  transition: border-color 140ms ease;
}

.page-partners .pt-type-desc a:hover,
.page-partners .pt-type-desc a:focus-visible {
  border-bottom-color: var(--color-accent);
}

.page-partners .pt-type-count {
  grid-column: 2;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  letter-spacing: 0.06em;
}

/* ---------- 条目目录 ---------- */
.page-partners .pt-catalog-body {
  display: grid;
  gap: var(--space-8);
  margin-top: var(--space-6);
}

.page-partners .pt-group {
  scroll-margin-top: var(--space-8);
}

.page-partners .pt-group-head {
  display: grid;
  gap: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-partners .pt-group-idx {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-primary);
}

.page-partners .pt-group-title {
  margin: var(--space-1) 0 0;
  color: var(--color-ink);
}

.page-partners .pt-group-note {
  margin: var(--space-2) 0 0;
  max-width: 56ch;
  font-size: var(--text-base);
  color: var(--color-ink-soft);
}

.page-partners .pt-media {
  overflow: hidden;
  border-radius: var(--pt-radius);
  border: var(--border-thin) solid var(--color-line);
  background-color: var(--color-surface-deep);
}

.page-partners .pt-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
}

.page-partners .pt-entries {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-partners .pt-entries > li + li .pt-entry {
  border-top: var(--border-thin) solid var(--color-line);
}

.page-partners .pt-entry {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: var(--space-3);
  padding: var(--space-4) var(--space-3);
  border-left: 2px solid transparent;
  transition: border-color 160ms ease, background-color 160ms ease;
}

.page-partners .pt-entry:hover {
  border-left-color: var(--color-accent);
  background-color: color-mix(in srgb, var(--color-surface-alt) 55%, transparent);
}

.page-partners .pt-entry-idx {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  line-height: 1.1;
  color: var(--color-ink-muted);
  letter-spacing: 0.04em;
  transition: color 160ms ease;
}

.page-partners .pt-entry:hover .pt-entry-idx {
  color: var(--color-accent);
}

.page-partners .pt-entry-main {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
}

.page-partners .pt-entry-title {
  margin: 0;
  color: var(--color-ink);
  transition: color 140ms ease;
}

.page-partners .pt-entry:hover .pt-entry-title {
  color: var(--color-accent);
}

.page-partners .pt-entry-desc {
  grid-column: 2;
  margin: 0;
  max-width: 46ch;
  font-size: var(--text-base);
  color: var(--color-ink-soft);
}

.page-partners .pt-entry-split {
  grid-column: 2;
  display: grid;
  gap: var(--space-2);
  margin: 0;
  padding-top: var(--space-1);
  opacity: 0.84;
  transition: opacity 160ms ease;
}

.page-partners .pt-entry:hover .pt-entry-split {
  opacity: 1;
}

.page-partners .pt-split dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-accent);
}

.page-partners .pt-split dd {
  margin: 2px 0 0;
  font-size: var(--text-sm);
  line-height: 1.65;
  color: var(--color-ink-muted);
}

/* ---------- 边界区（亮底） ---------- */
.page-partners .pt-boundaries .section-head {
  max-width: 62ch;
}

.page-partners .pt-boundaries .eyebrow {
  color: var(--color-contrast-accent);
}

.page-partners .pt-boundary-lead {
  margin-top: var(--space-3);
  font-size: var(--text-base);
  color: var(--color-contrast-ink);
  opacity: 0.82;
}

.page-partners .pt-boundary-grid {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.page-partners .pt-boundary {
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--pt-radius);
  padding: var(--space-3) var(--space-4);
  background-color: color-mix(in srgb, var(--color-contrast-surface) 70%, #ffffff);
  transition: border-color 140ms ease;
}

.page-partners .pt-boundary:hover,
.page-partners .pt-boundary[open] {
  border-color: var(--color-contrast-accent);
}

.page-partners .pt-boundary summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  cursor: pointer;
  list-style: none;
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-contrast-ink);
}

.page-partners .pt-boundary summary::-webkit-details-marker {
  display: none;
}

.page-partners .pt-boundary summary::after {
  content: "展开";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-body);
  letter-spacing: 0.1em;
  color: var(--color-contrast-accent);
}

.page-partners .pt-boundary[open] summary::after {
  content: "收起";
}

.page-partners .pt-boundary p {
  margin: var(--space-3) 0 0;
  max-width: 68ch;
  font-size: var(--text-base);
  color: var(--color-contrast-ink);
}

/* ---------- 对接区 ---------- */
.page-partners .pt-contact-grid {
  align-items: start;
  row-gap: var(--space-6);
}

.page-partners .pt-contact-intro .prose {
  margin-top: var(--space-3);
}

.page-partners .pt-contact-intro .btn {
  margin-top: var(--space-4);
}

.page-partners .pt-contact-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-partners .pt-contact-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: var(--space-2) var(--space-3);
  padding-block: var(--space-4);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-partners .pt-contact-item:last-child {
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-partners .pt-contact-idx {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-primary);
  letter-spacing: 0.06em;
  padding-top: 3px;
}

.page-partners .pt-contact-name {
  margin: 0;
  color: var(--color-ink);
}

.page-partners .pt-contact-item p {
  margin: var(--space-1) 0 0;
  max-width: 52ch;
  font-size: var(--text-base);
  color: var(--color-ink-soft);
}

/* ---------- 桌面增强 ---------- */
@media (min-width: 900px) {
  .page-partners .pt-hero {
    padding-block: var(--section-y) var(--space-8);
  }

  .page-partners .pt-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    column-gap: var(--space-8);
    margin-top: var(--space-8);
  }

  .page-partners .pt-hero-figures {
    flex-direction: column;
    align-items: flex-end;
    gap: var(--space-4);
    padding-bottom: var(--space-2);
  }

  .page-partners .pt-figure:nth-child(2) {
    margin-right: var(--space-6);
  }

  .page-partners .pt-scale {
    margin-top: var(--space-8);
  }

  .page-partners .pt-type {
    grid-template-columns: 60px minmax(0, 3fr) minmax(0, 4fr) 72px;
    column-gap: var(--space-4);
    align-items: baseline;
  }

  .page-partners .pt-type-desc {
    grid-column: auto;
  }

  .page-partners .pt-type-count {
    grid-column: auto;
    text-align: right;
  }

  .page-partners .pt-group-head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
    column-gap: var(--space-6);
    align-items: end;
  }

  .page-partners .pt-entry {
    grid-template-columns: 60px minmax(0, 2.6fr) minmax(0, 3.4fr) minmax(0, 4.4fr);
    column-gap: var(--space-4);
    align-items: start;
    padding-inline: var(--space-4) var(--space-2);
  }

  .page-partners .pt-entry-desc,
  .page-partners .pt-entry-split {
    grid-column: auto;
    padding-top: 0;
  }

  .page-partners .pt-entry-split {
    gap: var(--space-3);
  }

  .page-partners .pt-boundary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
  }

  .page-partners .pt-contact-item {
    grid-template-columns: 60px minmax(0, 1fr);
    column-gap: var(--space-4);
  }
}

@media (min-width: 1200px) {
  .page-partners .pt-catalog-body {
    gap: var(--space-8);
  }

  .page-partners .pt-group-head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 360px);
  }
}