:root {
  color-scheme: light dark;
  --bg: #fbfbfa;
  --surface: #ffffff;
  --text: #1b1b19;
  --muted: #666660;
  --line: #e5e5df;
  --accent: #2563eb;
  --accent-soft: #eef4ff;
  --code-bg: #f3f3ef;
  --radius: 12px;
  --max: 780px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0f16;
    --surface: #111827;
    --text: #e7eaf0;
    --muted: #9aa4b2;
    --line: #243044;
    --accent: #7aa2ff;
    --accent-soft: #14233f;
    --code-bg: #0d1420;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.site-header,
main,
.site-footer {
  width: min(100% - 48px, var(--max));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding-block: 22px;
  border-bottom: 1px solid var(--line);
}

.brand {
  color: var(--text);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.92rem;
}

nav a {
  color: var(--muted);
  text-decoration: none;
}

nav a:hover {
  color: var(--text);
}

nav a[aria-current="page"] {
  color: var(--accent);
  font-weight: 600;
}

main {
  padding-block: 52px 64px;
}

main > section {
  margin-top: 2.8rem;
}

h1,
h2,
h3 {
  line-height: 1.2;
}

h1 {
  margin: 8px 0 18px;
  font-size: clamp(2rem, 4.5vw, 2.8rem);
  letter-spacing: -0.035em;
}

h2 {
  margin: 2.4rem 0 0.8rem;
  font-size: 1.2rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.05rem;
}

p {
  margin: 0 0 1rem;
}

a {
  color: var(--accent);
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.eyebrow a {
  color: inherit;
  text-decoration: none;
}

.lead {
  max-width: 62ch;
  color: var(--muted);
  font-size: 1.12rem;
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--line);
}

.section-head h2 {
  margin: 0 0 10px;
}

.section-head a {
  font-size: 0.88rem;
  text-decoration: none;
}

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

.post-list > li {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.post-list > li:first-child {
  padding-top: 8px;
}

.post-list a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  color: var(--text);
  text-decoration: none;
}

.post-list a:hover .post-title {
  color: var(--accent);
}

.post-title {
  font-weight: 600;
}

.post-meta {
  color: var(--muted);
  font-size: 0.82rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.post-excerpt {
  max-width: 68ch;
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 14px;
}

.card {
  padding: 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.card h3 {
  margin: 0 0 0.4rem;
}

.card p {
  margin: 0 0 0.7rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.card p:last-child {
  margin-bottom: 0;
}

.card a {
  font-size: 0.86rem;
  text-decoration: none;
}

.tag {
  display: inline-block;
  width: fit-content;
  padding: 2px 9px;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.plain-list {
  margin: 0.5rem 0 1.5rem;
  padding: 0;
  list-style: none;
}

.plain-list li {
  padding: 11px 0;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
}

.plain-list li strong {
  color: var(--text);
  font-weight: 600;
}

.plain-list a {
  text-decoration: none;
}

.post {
  max-width: 700px;
}

.post h1 {
  margin-top: 10px;
}

.post > .post-meta {
  margin: -8px 0 28px;
}

.post p,
.post li {
  max-width: 68ch;
}

.post h2 {
  margin-top: 2.2rem;
}

.post a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.post code {
  padding: 1px 5px;
  background: var(--code-bg);
  border-radius: 5px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 0.9em;
}

.post pre {
  margin: 1.2rem 0;
  padding: 14px 16px;
  overflow-x: auto;
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: 10px;
}

.post pre code {
  padding: 0;
  background: none;
  border: 0;
  font-size: 0.84rem;
  line-height: 1.55;
  white-space: pre;
}

.post blockquote {
  margin: 1.4rem 0;
  padding-left: 16px;
  color: var(--muted);
  border-left: 3px solid var(--accent);
}

.post .back {
  margin-top: 2.5rem;
}

.site-footer {
  margin-top: 56px;
  padding-block: 24px 40px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 0.86rem;
}

.site-footer p {
  margin: 0 0 0.25rem;
}

.site-footer a {
  color: var(--muted);
}

.muted {
  color: var(--muted);
}

.skip-link {
  position: absolute;
  top: 0;
  left: -9999px;
  z-index: 10;
  padding: 8px 12px;
  background: var(--text);
  color: var(--bg);
}

.skip-link:focus {
  top: 16px;
  left: 16px;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

::selection {
  background: var(--accent-soft);
  color: var(--text);
}

img,
svg {
  max-width: 100%;
}

@media (max-width: 600px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding-block: 18px;
  }

  nav {
    gap: 16px;
  }

  main {
    padding-block: 36px 56px;
  }

  .post-list a {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }

  .post-meta {
    white-space: normal;
  }

  .section-head {
    align-items: flex-start;
  }

  .card {
    padding: 16px;
  }
}

@media (max-width: 400px) {
  .site-header,
  main,
  .site-footer {
    width: calc(100% - 32px);
  }
}