.blog-hero {
  padding: 9rem 0 4rem;
  background: linear-gradient(120deg, #0f172a 0%, #111827 50%, #0b3d2e 100%);
  color: #ffffff;
}

.blog-hero h1 {
  margin-top: 0.6rem;
  font-size: clamp(2rem, 4.8vw, 3.5rem);
  line-height: 1.1;
}

.blog-hero p {
  max-width: 760px;
  color: rgba(255, 255, 255, 0.88);
}

.topic-grid {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1rem;
}

.topic-card {
  border: 1px solid #d5d8de;
  border-radius: 14px;
  padding: 1rem;
  background: #ffffff;
}

.topic-card h3 {
  margin-bottom: 0.35rem;
}

.topic-card button {
  margin-top: 0.75rem;
}

.post-search {
  margin: 1.3rem auto 0;
  display: flex;
  gap: 0.6rem;
  max-width: 760px;
}

.post-search input {
  flex: 1;
  border: 1px solid #c8ccd3;
  border-radius: 10px;
  padding: 0.75rem;
}

.post-list {
  margin-top: 1.25rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.post-card {
  border: 1px solid #d5d8de;
  border-radius: 14px;
  background: #ffffff;
  padding: 1rem;
}

.post-meta {
  color: #556070;
  font-size: 0.9rem;
}

.post-detail {
  margin-top: 1.4rem;
  background: #ffffff;
  border: 1px solid #d5d8de;
  border-radius: 14px;
  padding: 1.25rem;
}

.post-detail pre {
  white-space: pre-wrap;
  font-family: inherit;
}

.publish-grid {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1rem;
}

.publish-card {
  border: 1px solid #d5d8de;
  border-radius: 14px;
  background: #ffffff;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.publish-card input,
.publish-card textarea {
  border: 1px solid #c8ccd3;
  border-radius: 10px;
  padding: 0.7rem;
  font: inherit;
}

.form-message {
  min-height: 1.2rem;
  color: #0b3d2e;
}

@media (max-width: 800px) {
  .blog-hero {
    padding-top: 7rem;
  }
}