:root {
  color-scheme: dark;
  --bg: #0c1018;
  --text: #e6ecfb;
  --muted: #95a2c4;
  --border: #202a43;
  --accent: #4169e1;
  --accent-soft: rgba(65, 105, 225, 0.12);
  --content-width: 720px;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

img {
  display: block;
  max-width: 100%;
}

code,
pre {
  font-family: "SFMono-Regular", SFMono-Regular, ui-monospace, Menlo, monospace;
}

.shell {
  width: min(calc(100% - 2rem), 760px);
  margin: 0 auto;
  padding: 2.5rem 0 4rem;
}

.site-header {
  margin-bottom: 2rem;
}

.brand {
  color: var(--text);
  text-decoration: none;
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1.15;
}

.brand:hover {
  color: var(--text);
}

.site-tagline,
.post-meta,
.post-card-date,
.post-description,
.back-link,
.post-signature {
  color: var(--muted);
}

.site-tagline {
  margin: 0.35rem 0 0;
  max-width: 56ch;
}

.list-title,
.post-header h1,
.post-card h2 {
  margin: 0;
  line-height: 1.15;
}

.list-title {
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.post-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.post-card {
  padding: 0.9rem 0;
  border-top: 1px solid var(--border);
}

.post-list li:last-child {
  border-bottom: 1px solid var(--border);
}

.post-card-date,
.post-meta,
.back-link {
  font-size: 0.95rem;
}

.post-card h2 {
  margin-top: 0.2rem;
  font-size: 1.28rem;
  font-weight: 600;
}

.post-card a,
.post a,
.prose a {
  color: var(--accent);
  text-decoration: none;
}

.post-card a:hover,
.post a:hover,
.prose a:hover {
  text-decoration: underline;
}

.post-header h1 {
  font-size: clamp(2rem, 5vw, 2.8rem);
  letter-spacing: -0.03em;
}

.post-meta,
.post-description {
  margin: 0.35rem 0 0;
}

.back-link {
  margin: 0 0 1.5rem;
}

.post-body {
  margin-top: 2rem;
}

.post-signature {
  margin-top: 2rem;
}

.prose > * {
  max-width: var(--content-width);
}

.prose h2,
.prose h3,
.prose h4 {
  line-height: 1.2;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.prose p,
.prose ul,
.prose ol,
.prose pre,
.prose blockquote {
  margin: 1rem 0;
}

.prose ul,
.prose ol {
  padding-left: 1.25rem;
}

.prose blockquote {
  margin-left: 0;
  padding-left: 1rem;
  border-left: 3px solid var(--accent);
  color: var(--muted);
}

.prose code {
  background: var(--accent-soft);
  color: var(--text);
  padding: 0.12rem 0.35rem;
  border-radius: 0.25rem;
}

.prose pre {
  background: #0a1020;
  color: #eef4ff;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 0.35rem;
  overflow-x: auto;
}

.prose pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

@media (max-width: 640px) {
  .shell {
    width: min(calc(100% - 1rem), 760px);
    padding-top: 1.5rem;
  }

  .brand {
    display: inline-block;
    font-size: 1.5rem;
  }

  .post-card h2 {
    font-size: 1.15rem;
  }
}