:root {
  --bg: #0d1117;
  --fg: #c9d1d9;
  --fg-dim: #8b949e;
  --accent: #58a6ff;
  --border: #21262d;
  --code-bg: #161b22;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'JetBrains Mono', 'Fira Code', 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
  background: var(--bg);
  color: var(--fg);
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  line-height: 1.6;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

header nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 3rem;
}

.logo {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--fg);
}
.logo:hover { color: var(--accent); text-decoration: none; }

header nav a:not(.logo) {
  color: var(--fg-dim);
  font-size: 0.9rem;
}
header nav a:not(.logo):hover { color: var(--fg); }

.hero h1 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 3rem;
  line-height: 1.3;
}

.articles {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.card {
  display: block;
  padding: 1.2rem 1.5rem;
  border: 1px solid var(--border);
  transition: border-color 0.15s;
}
.card:hover {
  border-color: var(--fg-dim);
  text-decoration: none;
}

.card h2 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 0.4rem;
}

.card p {
  font-size: 0.85rem;
  color: var(--fg-dim);
  margin: 0;
}

article h1 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

article time {
  display: block;
  color: var(--fg-dim);
  font-size: 0.85rem;
  margin-bottom: 2rem;
}

article h2 { font-size: 1.3rem; margin: 2rem 0 0.8rem; }
article h3 { font-size: 1.1rem; margin: 1.5rem 0 0.6rem; }

article p { margin-bottom: 1rem; }

article ul, article ol {
  margin: 0 0 1rem 1.5rem;
}
article li { margin-bottom: 0.3rem; }

article code {
  font-size: 0.9em;
  background: var(--code-bg);
  padding: 0.15em 0.4em;
  border-radius: 3px;
}

article pre {
  background: var(--code-bg);
  padding: 1.2rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border);
  font-size: 0.85rem;
  line-height: 1.5;
}
article pre code {
  background: none;
  padding: 0;
}

article img {
  max-width: 100%;
  height: auto;
  margin: 1.5rem 0;
}

article blockquote {
  border-left: 3px solid var(--border);
  padding-left: 1rem;
  color: var(--fg-dim);
  margin: 1rem 0;
}

footer {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--fg-dim);
}

@media (max-width: 600px) {
  body { padding: 1.2rem 1rem; }
  .hero h1 { font-size: 1.4rem; }
}