/* ===========================
 * Partners — Lead
 * =========================== */
.partners-lead {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 28px 32px;
  box-shadow: var(--shadow-card);
  margin-bottom: 32px;
  animation: fadeSlideUp 0.5s ease both;
}

.partners-lead__text {
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--color-text);
  margin: 0;
}

/* ===========================
 * Partners — Summary
 * =========================== */
.partners-summary {
  display: flex;
  margin-bottom: 56px;
  animation: fadeSlideUp 0.5s ease both;
  animation-delay: 0.08s;
}

.partners-summary__item {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  padding: 14px 22px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.partners-summary__num {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-primary);
}

.partners-summary__label {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-light);
}

/* ===========================
 * Partners — Tier
 * =========================== */
.partners-tier {
  margin-bottom: 64px;
  animation: fadeSlideUp 0.5s ease both;
}

.partners-tier:last-of-type {
  margin-bottom: 0;
}

.partners-tier__header {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 28px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-border);
}

.partners-tier__title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  margin: 0;
  position: relative;
  padding-left: 14px;
}

.partners-tier__title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 3px;
  border-radius: 2px;
  background: var(--color-secondary);
}

.partners-tier__count {
  font-size: 0.8rem;
  color: var(--color-text-light);
  font-weight: 500;
  letter-spacing: 0.04em;
}

/* ===========================
 * Partners — Logo Grid (画像のみ)
 * =========================== */
.partners-logo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.partner-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 16 / 9;
  transition: opacity 0.25s ease;
  text-decoration: none;
  color: inherit;
  overflow: hidden;
}

a.partner-logo:hover {
  opacity: 0.75;
}

.partner-logo__img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
}

.partner-logo__fallback {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-primary);
  text-align: center;
  line-height: 1.4;
  letter-spacing: 0.03em;
}

/* ===========================
 * Empty State
 * =========================== */
.partners-empty {
  text-align: center;
  padding: 48px 20px;
  color: var(--color-text-light);
}

/* ===========================
 * Partners — CTA
 * =========================== */
.partners-cta {
  margin-top: 80px;
  animation: fadeSlideUp 0.5s ease both;
}

.partners-cta__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px 32px;
}

.partners-cta__title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.partners-cta__text {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.7;
  margin: 0;
}

.partners-cta__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  white-space: nowrap;
}

/* ===========================
 * Responsive
 * =========================== */
@media (max-width: 768px) {
  .partners-lead {
    padding: 22px 20px;
  }

  .partners-summary {
    margin-bottom: 40px;
  }

  .partners-summary__num {
    font-size: 1.4rem;
  }

  .partners-tier {
    margin-bottom: 48px;
  }

  .partners-tier__header {
    margin-bottom: 20px;
  }

  .partners-logo-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
  }

  .partners-cta__inner {
    flex-direction: column;
    text-align: center;
    padding: 28px 24px;
  }

  .partners-cta__btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .partners-logo-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
}