.topic-page {
  padding-top: 78px;
}

.topic-hero {
  padding: clamp(70px, 10vw, 130px) 0 clamp(64px, 8vw, 104px);
  background: var(--surface);
}

.topic-back {
  display: inline-block;
  margin-bottom: 48px;
  color: var(--muted);
  font-weight: 720;
}

.topic-hero h1 {
  max-width: 900px;
  margin: 10px 0 24px;
  font-size: clamp(3.5rem, 9vw, 8.5rem);
  line-height: 0.88;
  letter-spacing: -0.075em;
}

.topic-hero > .section-inner > p:last-child {
  max-width: 720px;
  color: var(--muted);
  font-size: clamp(1.1rem, 2vw, 1.4rem);
}

.topic-list-heading {
  margin-bottom: 36px;
}

.topic-list-heading h2 {
  max-width: 800px;
}

.topic-article-list {
  display: grid;
  gap: 16px;
}

.topic-article-item {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 32px;
  align-items: center;
  padding: clamp(24px, 4vw, 42px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.topic-article-image {
  position: absolute;
  z-index: -2;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.topic-article-item.has-image::after {
  position: absolute;
  z-index: -1;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(8, 13, 18, 0.95) 0%, rgba(8, 13, 18, 0.82) 68%, rgba(8, 13, 18, 0.58) 100%),
    linear-gradient(0deg, rgba(8, 13, 18, 0.58), transparent 55%);
  content: "";
}

.topic-article-item.has-image h3 {
  color: var(--white);
  text-shadow: 0 2px 22px rgba(0, 0, 0, 0.35);
}

.topic-article-item.has-image p,
.topic-article-item.has-image .topic-article-meta {
  color: rgba(255, 255, 255, 0.82);
}

.topic-article-item.has-image .topic-article-action {
  color: #b9efea;
}

.topic-article-item:hover {
  transform: translateY(-3px);
  border-color: rgba(22, 166, 162, 0.32);
  box-shadow: var(--shadow);
}

.topic-article-meta {
  display: flex;
  gap: 12px;
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 760;
  text-transform: uppercase;
}

.topic-article-item h3 {
  margin-bottom: 12px;
  font-size: clamp(1.6rem, 3vw, 2.5rem);
}

.topic-article-item p {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
}

.topic-article-action {
  color: var(--teal);
  font-weight: 800;
  white-space: nowrap;
}

.topic-empty {
  padding: clamp(30px, 5vw, 54px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.topic-empty h3 {
  margin-bottom: 10px;
}

.topic-empty p {
  max-width: 650px;
  margin: 0;
  color: var(--muted);
}

@media (max-width: 680px) {
  .topic-page {
    padding-top: 70px;
  }

  .topic-article-item {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .topic-article-item.has-image::after {
    background: rgba(8, 13, 18, 0.84);
  }
}