.page-partners {
  --pn-panel-pad: clamp(var(--space-3), 4.5vw, var(--space-8));
  --pn-cell-pad: clamp(var(--space-2), 3vw, var(--space-4));
  --pn-soft-line: color-mix(in srgb, var(--color-primary) 26%, transparent);
}

/* ---------- 首屏 ---------- */
.page-partners .pn-hero__panel {
  margin-top: var(--space-4);
  padding: var(--pn-panel-pad);
  border-radius: var(--radius-lg);
  background: var(--color-primary-soft);
  border: var(--border-thin) solid var(--pn-soft-line);
  display: grid;
  gap: clamp(var(--space-4), 4vw, var(--space-6));
}

.page-partners .pn-hero__intro {
  max-width: var(--measure);
}

.page-partners .pn-hero__lead {
  margin-top: var(--space-3);
  color: var(--color-ink-soft);
}

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

.page-partners .pn-flow__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: var(--space-2);
  height: 100%;
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-primary-ink) 58%, transparent);
  border: var(--border-thin) solid var(--pn-soft-line);
  color: var(--color-ink);
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease,
    border-color 0.2s ease, background 0.2s ease;
}

.page-partners .pn-flow__link:hover,
.page-partners .pn-flow__link:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--shadow-1);
  border-color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary-ink) 78%, transparent);
}

.page-partners .pn-flow__idx {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.4;
  color: var(--color-primary);
  padding-top: 0.25em;
}

.page-partners .pn-flow__body {
  display: grid;
  gap: var(--space-1);
  min-width: 0;
}

.page-partners .pn-flow__name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
}

.page-partners .pn-flow__desc {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

.page-partners .pn-hero__nums {
  display: grid;
  gap: var(--space-3);
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--pn-soft-line);
}

.page-partners .pn-num {
  display: grid;
  gap: var(--space-1);
  align-content: start;
}

.page-partners .pn-num__value {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
}

.page-partners .pn-num__label {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-partners .pn-num__note {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-muted);
}

.page-partners .pn-hero__media {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: var(--border-thin) solid var(--pn-soft-line);
  background: var(--color-surface-deep);
}

.page-partners .pn-hero__media img,
.page-partners .pn-band__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 三类协作内容带 ---------- */
.page-partners .pn-bands__head {
  max-width: var(--measure);
  margin-bottom: var(--space-6);
}

.page-partners .pn-bands__sub {
  margin-top: var(--space-3);
  color: var(--color-ink-soft);
}

.page-partners .pn-band {
  display: grid;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  padding: var(--pn-cell-pad);
  border-radius: var(--radius-lg);
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface);
  box-shadow: var(--shadow-1);
  scroll-margin-top: var(--space-8);
}

.page-partners .pn-band:last-child {
  margin-bottom: 0;
}

.page-partners .pn-band__head {
  display: grid;
  gap: var(--space-2);
  justify-items: start;
}

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

.page-partners .pn-band__media {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface-deep);
}

.page-partners .pn-band__grid {
  display: grid;
  gap: var(--space-2);
}

.page-partners .pn-cell {
  padding: var(--pn-cell-pad);
  border-radius: var(--radius-md);
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface-alt);
  display: grid;
  gap: var(--space-2);
  align-content: start;
}

.page-partners .pn-cell--problem {
  background: var(--color-primary-soft);
  border-color: var(--pn-soft-line);
}

.page-partners .pn-cell--do {
  background: var(--color-surface);
}

.page-partners .pn-cell--gain {
  background: var(--color-surface-deep);
  border-color: var(--pn-soft-line);
}

.page-partners .pn-cell__kicker {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--weight-heading);
  letter-spacing: 0.14em;
  color: var(--color-primary);
}

.page-partners .pn-cell--problem .pn-cell__kicker {
  color: var(--color-ink-soft);
}

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

.page-partners .pn-gains {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.page-partners .pn-fact {
  margin: 0;
  padding-top: var(--space-3);
  border-top: var(--border-thin) dashed var(--pn-soft-line);
  display: grid;
  gap: var(--space-1);
  transition: border-color 0.2s ease;
}

.page-partners .pn-fact__num {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
  transition: color 0.2s ease;
}

.page-partners .pn-fact:hover,
.page-partners .pn-fact:focus-within {
  border-color: var(--color-primary);
}

.page-partners .pn-fact:hover .pn-fact__num {
  color: var(--color-primary);
}

.page-partners .pn-fact__text {
  font-size: var(--text-sm);
  line-height: 1.8;
  color: var(--color-ink-soft);
}

/* ---------- 怎么开始 + 边界 ---------- */
.page-partners .pn-start__grid {
  align-items: start;
}

.page-partners .pn-start__panel {
  display: grid;
  gap: var(--space-4);
  padding: var(--pn-panel-pad);
  border-radius: var(--radius-lg);
  background: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
  box-shadow: var(--shadow-2);
}

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

.page-partners .pn-start__step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-2);
  align-items: start;
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
}

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

.page-partners .pn-start__idx {
  display: grid;
  place-items: center;
  width: 2em;
  height: 2em;
  border-radius: var(--radius-pill);
  background: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1;
}

.page-partners .pn-start__step-body {
  display: grid;
  gap: var(--space-1);
  min-width: 0;
}

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

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

.page-partners .pn-boundary {
  display: grid;
  gap: var(--space-3);
  height: 100%;
  padding: var(--pn-panel-pad);
  border-radius: var(--radius-lg);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border: var(--border-thin) solid var(--color-contrast-line);
}

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

.page-partners .pn-boundary__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-partners .pn-boundary__list li {
  padding: var(--space-2) 0;
  border-top: var(--border-thin) solid var(--color-contrast-line);
  font-size: var(--text-sm);
  line-height: 1.8;
  color: color-mix(in srgb, var(--color-contrast-ink) 82%, transparent);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-partners .pn-flows {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-partners .pn-band__grid {
    gap: 0;
    border: var(--border-thin) solid var(--color-line);
    border-radius: var(--radius-md);
    overflow: hidden;
  }

  .page-partners .pn-cell {
    border: 0;
    border-radius: 0;
  }

  .page-partners .pn-cell + .pn-cell {
    border-left: var(--border-thin) solid var(--color-line);
  }
}

@media (min-width: 900px) {
  .page-partners .pn-band--content .pn-band__grid {
    grid-template-columns: 1.3fr 1fr 0.85fr;
  }

  .page-partners .pn-band--check .pn-band__grid {
    grid-template-columns: 0.85fr 1.3fr 1fr;
  }

  .page-partners .pn-band--youth .pn-band__grid {
    grid-template-columns: 1fr 0.85fr 1.3fr;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-partners .pn-flow__link,
  .page-partners .pn-fact,
  .page-partners .pn-fact__num {
    transition: none;
  }

  .page-partners .pn-flow__link:hover,
  .page-partners .pn-flow__link:focus-visible {
    transform: none;
  }
}