:root {
  --bg: #f7f4ee;
  --surface: #ffffff;
  --border: #ddd6c8;
  --text: #222222;
  --muted: #6c6c6c;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Georgia, "Times New Roman", serif;
}

.page-shell {
  width: min(960px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0;
}

.page-header {
  margin-bottom: 32px;
}

.page-header h1,
.category-panel h2,
.post-panel h2 {
  margin: 0;
}

.page-header h1 {
  font-size: clamp(2.4rem, 7vw, 4.2rem);
}

.blog-layout {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 24px;
}

.category-panel,
.post-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 24px;
}

.category-list {
  list-style: none;
  padding: 0;
  margin: 20px 0 0;
  display: grid;
  gap: 12px;
}

.post-list {
  margin-top: 20px;
  display: grid;
  gap: 12px;
}

.post-item {
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
}

.post-item h3,
.post-item p {
  margin: 0;
}

.post-item p,
.empty-item {
  color: var(--muted);
}

.empty-item {
  margin: 0;
}

@media (max-width: 720px) {
  .blog-layout {
    grid-template-columns: 1fr;
  }

  .page-shell {
    width: min(100% - 20px, 960px);
    padding: 28px 0;
  }
}