.ptp-topic-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--ptp-line);
}

.ptp-topic-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1rem 1.25rem;
  align-items: center;
  padding: 1.25rem 0.25rem;
  border-bottom: 1px solid var(--ptp-line);
  text-decoration: none;
  color: inherit;
  transition: background 0.25s ease, padding-left 0.35s var(--ptp-ease);
}

.ptp-topic-row:hover {
  background: rgba(255, 255, 255, 0.45);
  padding-left: 0.5rem;
}

.ptp-topic-row__mark {
  width: 3rem;
  height: 3rem;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: var(--ptp-sky-soft);
  color: var(--ptp-sky);
  font-family: var(--ptp-font-display);
  font-size: 0.85rem;
  font-weight: 600;
  overflow: hidden;
  flex-shrink: 0;
}

.ptp-topic-row__mark--img {
  background: #fffefb;
  border: 1px solid var(--ptp-line);
  padding: 0.25rem;
}

.ptp-topic-row__mark--img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.ptp-topic-row__body h2 {
  font-size: 1.1rem;
  margin: 0 0 0.25rem;
}

.ptp-topic-row__body p {
  margin: 0;
  font-size: 0.92rem;
}

.ptp-topic-row__meta {
  font-size: 0.8rem;
  color: var(--ptp-ink-muted);
  white-space: nowrap;
}

@media (max-width: 640px) {
  .ptp-topic-row {
    grid-template-columns: auto 1fr;
  }

  .ptp-topic-row__meta {
    grid-column: 2;
    white-space: normal;
  }
}