:root {
  --fg: #111111;
  --bg: #ffffff;
  --muted: #6b6b6b;
  --border: #e5e5e5;
}

* { box-sizing: border-box; }

html { font-size: 17px; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  line-height: 1.7;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 2.6rem 1.3rem 4rem;
}

/* Header */
.site-title {
  font-size: 2.3rem;
  font-weight: 700;
  margin: 0 0 0.4rem;
  letter-spacing: -0.01em;
}
.site-title a { color: inherit; text-decoration: none; }

nav {
  display: flex;
  gap: 1.6rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--fg);
  margin-bottom: 2.4rem;
  font-size: 0.95rem;
}
nav a { color: var(--fg); text-decoration: none; }
nav a:hover { text-decoration: underline; }

/* Post list */
.post-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 0.45rem 0;
}
.post-title { color: var(--fg); text-decoration: none; }
.post-title:hover { text-decoration: underline; }
.post-date { color: var(--muted); font-size: 0.9rem; white-space: nowrap; }

/* Article */
.post-header { font-size: 1.75rem; margin: 0 0 0.3rem; }
.page-header { font-size: 1.5rem; margin: 0 0 1.2rem; }
h3.year { font-size: 1.1rem; margin: 1.9rem 0 0.4rem; color: var(--muted); font-weight: 400; }
.post-meta { color: var(--muted); font-size: 0.92rem; margin-bottom: 2.1rem; }

.post-content a { color: var(--fg); text-decoration: underline; }
.post-content h2, .post-content h3 { line-height: 1.4; }
.post-content blockquote {
  margin: 1.5rem 0;
  padding: 0.05rem 1.15rem;
  border-left: 3px solid var(--fg);
  color: #333333;
}
.post-content code {
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.86em;
  background: #f4f4f4;
  padding: 0.12em 0.35em;
}
.post-content pre {
  background: #f7f7f7;
  padding: 1rem 1.1rem;
  overflow-x: auto;
  line-height: 1.55;
  font-size: 0.88rem;
}
.post-content pre code { background: none; padding: 0; }
.post-content img { max-width: 100%; }
.post-content hr { border: none; border-top: 1px solid var(--border); }

/* Tags page */
.tag-cloud { line-height: 2.4; }
.tag-link {
  color: var(--fg);
  text-decoration: none;
  border: 1px solid var(--fg);
  border-radius: 999px;
  padding: 0.15rem 0.8rem;
  margin-right: 0.5rem;
  font-size: 0.92rem;
  display: inline-block;
}
.tag-link:hover { text-decoration: underline; }
.tag-count { color: var(--muted); }

/* Footer */
footer {
  margin-top: 3.6rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.85rem;
  display: flex;
  justify-content: space-between;
}

@media (max-width: 600px) {
  html { font-size: 16px; }
  .post-row { flex-direction: column; gap: 0.1rem; }
}