.page-partners {
  --pn-max-narrow: 64ch;
}

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

/* ---------- 首屏 ---------- */

.page-partners .pn-hero {
  margin-bottom: 0;
}

.page-partners .pn-hero-slab {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding-block: var(--space-6);
}

.page-partners .pn-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px;
  margin-bottom: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: color-mix(in srgb, var(--color-contrast-ink) 60%, transparent);
}

.page-partners .pn-crumb a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 140ms ease-out, border-color 140ms ease-out;
}

.page-partners .pn-crumb a:hover {
  color: var(--color-contrast-accent);
  border-bottom-color: var(--color-contrast-accent);
}

.page-partners .pn-hero-title {
  margin: 0 0 var(--space-3);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: 1.15;
  letter-spacing: -0.02em;
  max-width: 18ch;
  color: var(--color-contrast-ink);
}

.page-partners .pn-hero-lead {
  margin: 0 0 var(--space-6);
  max-width: var(--pn-max-narrow);
  font-size: var(--text-base);
  line-height: 1.79;
  color: color-mix(in srgb, var(--color-contrast-ink) 84%, transparent);
}

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

.page-partners .pn-figure {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.page-partners .pn-figure-num {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: 600;
  line-height: 1;
  color: var(--color-contrast-ink);
}

.page-partners .pn-figure-label {
  font-size: var(--text-sm);
  color: color-mix(in srgb, var(--color-contrast-ink) 86%, transparent);
}

.page-partners .pn-figure-code {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-contrast-accent);
}

.page-partners .pn-axis {
  background: var(--color-primary);
  color: var(--color-primary-ink);
  padding-block: var(--space-2);
}

.page-partners .pn-axis-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px var(--space-4);
  font-size: var(--text-sm);
  line-height: 1.5;
}

.page-partners .pn-axis-list li {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}

.page-partners .pn-axis-list .mono {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  opacity: 0.72;
}

.page-partners .pn-hero-shot {
  margin: var(--space-6) 0 0;
}

.page-partners .pn-hero-shot .figure-frame {
  border-radius: var(--radius-sm);
}

/* ---------- 分组 ---------- */

.page-partners .pn-group {
  padding-block: var(--section-y);
}

.page-partners .pn-group:first-of-type {
  padding-top: var(--space-6);
}

.page-partners .pn-band {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px var(--space-2);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding: 12px var(--space-3);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-6);
}

.page-partners .pn-band-idx {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-contrast-accent);
  white-space: nowrap;
}

.page-partners .pn-band-name {
  margin: 0;
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.3;
}

.page-partners .pn-band-codes {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: color-mix(in srgb, var(--color-contrast-ink) 58%, transparent);
  white-space: nowrap;
}

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

.page-partners .pn-item {
  padding: var(--space-2) var(--space-3);
  margin-inline: calc(var(--space-3) * -1);
  border-radius: var(--radius-md);
  transition: background-color 140ms ease-out;
}

.page-partners .pn-item:hover {
  background: var(--color-primary-soft);
}

.page-partners .pn-item-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  margin-bottom: var(--space-2);
}

.page-partners .pn-item-code {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.page-partners .pn-item-title {
  margin: 0;
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.3;
  color: var(--color-ink);
}

.page-partners .pn-fields {
  margin: 0;
  display: block;
}

.page-partners .pn-field {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  padding-block: 8px;
  border-top: 1px solid var(--color-line);
}

.page-partners .pn-field:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-partners .pn-field dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-partners .pn-field dd {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.72;
  color: var(--color-ink-soft);
}

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

.page-partners .pn-field dd a:hover {
  border-bottom-color: var(--color-primary);
}

.page-partners .pn-diagram {
  display: block;
  width: 100%;
  max-width: 240px;
  height: auto;
  margin-top: var(--space-3);
  color: var(--color-primary);
}

.page-partners .pn-shot {
  margin: var(--space-6) 0 0;
}

.page-partners .pn-shot--lead {
  margin: 0 0 var(--space-6);
}

.page-partners .pn-shot .figure-frame {
  border-radius: var(--radius-sm);
}

.page-partners .pn-shot .figure-caption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.6;
  color: var(--color-ink-muted);
}

.page-partners .pn-limit {
  margin-top: var(--space-6);
  padding: var(--space-3);
  background: var(--color-surface-deep);
  border-radius: var(--radius-sm);
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.page-partners .pn-limit-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-partners .pn-limit p:last-child {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.72;
  color: var(--color-ink);
  max-width: var(--pn-max-narrow);
}

/* ---------- 结尾 ---------- */

.page-partners .pn-closing {
  padding-block: var(--section-y) var(--section-y-lg);
  background: var(--color-surface-alt);
}

.page-partners .pn-rules {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.page-partners .pn-rule {
  padding-top: var(--space-3);
  border-top: 2px solid var(--color-primary);
}

.page-partners .pn-rule-idx {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.page-partners .pn-rule-title {
  margin: 0 0 8px;
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  line-height: 1.4;
  color: var(--color-ink);
}

.page-partners .pn-rule p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.72;
  color: var(--color-ink-soft);
  max-width: var(--pn-max-narrow);
}

.page-partners .pn-next {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-line);
}

.page-partners .pn-next p {
  margin: 0;
  max-width: var(--pn-max-narrow);
  font-size: var(--text-base);
  line-height: 1.79;
  color: var(--color-ink);
}

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

.page-partners .pn-next a:hover {
  border-bottom-color: var(--color-primary);
}

/* ---------- 响应式 ---------- */

@media (min-width: 560px) {
  .page-partners .pn-field {
    grid-template-columns: 6.5em minmax(0, 1fr);
    column-gap: var(--space-3);
    align-items: baseline;
  }
}

@media (min-width: 768px) {
  .page-partners .pn-hero-slab {
    padding-block: var(--space-8);
  }

  .page-partners .pn-hero-lead {
    font-size: var(--text-lg);
    line-height: 1.7;
  }

  .page-partners .pn-figures {
    gap: var(--space-4);
  }

  .page-partners .pn-limit {
    grid-template-columns: 8em minmax(0, 1fr);
    align-items: baseline;
    gap: var(--space-3);
    padding: var(--space-4);
  }

  .page-partners .pn-rules {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-4);
  }
}

@media (min-width: 900px) {
  .page-partners .pn-pair {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4) var(--space-6);
    align-items: start;
  }

  .page-partners .pn-item--offset {
    margin-top: var(--space-8);
  }

  .page-partners .pn-shot--right {
    width: 70%;
    margin-left: auto;
  }

  .page-partners .pn-shot--left {
    width: 66%;
    margin-right: auto;
  }

  .page-partners .pn-shot--lead {
    width: 100%;
    margin-bottom: var(--space-8);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-partners .pn-item,
  .page-partners .pn-crumb a,
  .page-partners .pn-field dd a,
  .page-partners .pn-next a {
    transition: none;
  }
}