.paper-filter {
  grid-template-columns: minmax(260px, 2fr) minmax(160px, 1fr) minmax(180px, 1fr) auto;
}

.paper-collections {
  margin: 36px 0 42px;
  padding: clamp(22px, 3vw, 34px);
  border: 1px solid #dce7e3;
  border-radius: 18px;
  background: #f7faf9;
}

.paper-collections__heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 22px;
}

.subpage-content .paper-collections__heading h2,
.subpage-content .paper-collections__heading p {
  margin: 0;
}

.subpage-content .paper-collections__heading > p {
  color: var(--muted);
  font-size: 14px;
}

.paper-collections__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.paper-collection-card {
  display: grid;
  gap: 4px;
  min-height: 164px;
  padding: 18px;
  border: 1px solid #d4e1dc;
  border-radius: 14px;
  background: var(--white);
  color: var(--text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.paper-collection-card:hover {
  border-color: var(--green);
  box-shadow: 0 10px 24px rgba(0, 72, 55, 0.1);
  transform: translateY(-2px);
}

.paper-collection-card__year {
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
}

.paper-collection-card__title {
  font-size: 17px;
}

.paper-collection-card__meta {
  color: var(--muted);
  font-size: 13px;
}

.paper-collection-card__action {
  align-self: end;
  margin-top: 10px;
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
}

.paper-collection-card__action::after {
  margin-left: 6px;
  content: "↗";
}

.subpage-content .paper-collections__loading {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--muted);
}

.report-filter {
  grid-template-columns: minmax(280px, 2fr) minmax(170px, 1fr) minmax(170px, 1fr) auto;
}

.research-category--muted {
  background: #edf0f3;
  color: #606a76;
}

.subpage-content .paper-result-meta {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.paper-open-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  margin-top: 11px;
  padding: 7px 15px;
  border-radius: 999px;
  background: var(--green);
  color: var(--white);
  font-size: 13px;
  font-weight: 800;
  line-height: 1.3;
}

.paper-open-link::after {
  margin-left: 7px;
  content: "↗";
  font-size: 12px;
}

.paper-open-link:hover {
  background: #005f49;
}

.report-phase {
  min-width: 70px;
  text-align: center;
}

@media (max-width: 1040px) {
  .paper-collections__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .paper-filter,
  .report-filter {
    grid-template-columns: 2fr 1fr 1fr;
  }

  .paper-filter .research-filter__keyword,
  .report-filter .research-filter__keyword {
    grid-column: span 2;
  }
}

@media (max-width: 720px) {
  .paper-collections__heading {
    display: block;
  }

  .subpage-content .paper-collections__heading > p {
    margin-top: 8px;
  }

  .paper-collections__grid {
    grid-template-columns: 1fr;
  }

  .paper-collection-card {
    min-height: 150px;
  }

  .paper-filter,
  .report-filter {
    grid-template-columns: 1fr;
  }

  .paper-filter .research-filter__keyword,
  .report-filter .research-filter__keyword {
    grid-column: auto;
  }

  .paper-open-link {
    width: 100%;
    min-height: 44px;
  }
}