:root {
  --fg: #000;
  --bg: #fff;
  --hl: #ff0;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "Helvetica Neue", Helvetica, Arial, sans-serif;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #fff;
    --bg: #000;
  }
}

* {
  box-sizing: border-box;
}

html {
  font: 18px/1.6 var(--sans);
  background: var(--bg);
  color: var(--fg);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0 auto;
  max-width: 42rem;
  padding: 0 1.25rem 4rem;
}

::selection,
mark {
  background: var(--hl);
  color: #000;
}

a {
  color: inherit;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.15em;
}

a:hover {
  background: var(--fg);
  color: var(--bg);
  text-decoration: none;
}

/* Site chrome */

header.site,
footer.site {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

header.site {
  padding: 1.5rem 0 1rem;
  border-bottom: 4px solid var(--fg);
}

header.site .brand {
  font-weight: 700;
  text-decoration: none;
}

header.site nav {
  display: flex;
  gap: 1.25rem;
}

footer.site {
  margin-top: 5rem;
  padding-top: 1rem;
  border-top: 4px solid var(--fg);
}

/* Type */

h1,
h2,
h3,
h4 {
  line-height: 1.1;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

h1 {
  margin: 3rem 0 1rem;
  font-size: clamp(2rem, 8vw, 3.25rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.035em;
}

h2 {
  margin: 3rem 0 1rem;
  padding-top: 0.75rem;
  border-top: 2px solid var(--fg);
  font-size: 1.6rem;
}

h3 {
  margin: 2.25rem 0 0.75rem;
  font-size: 1.25rem;
}

h4 {
  margin: 2.25rem 0 0.75rem;
  font-family: var(--mono);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

p,
ul,
ol,
blockquote,
table,
figure,
pre,
iframe {
  margin: 0 0 1.25rem;
}

.tagline {
  margin: 3rem 0 2rem;
  font-size: clamp(1.5rem, 6vw, 2.25rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

article > header {
  margin-bottom: 2.5rem;
}

.subtitle {
  margin-bottom: 0.75rem;
  font-size: 1.25rem;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  text-transform: uppercase;
}

/* Post list */

.posts {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--fg);
}

.posts li {
  display: grid;
  grid-template-columns: 6.5rem 1fr;
  gap: 1rem;
  align-items: baseline;
  padding: 0.9rem 0;
  border-bottom: 2px solid var(--fg);
}

.posts time {
  font-family: var(--mono);
  font-size: 0.8rem;
}

.posts a {
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.25;
  text-decoration: none;
}

.posts mark,
.meta mark {
  padding: 0 0.3em;
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 400;
  text-transform: uppercase;
}

@media (max-width: 30rem) {
  .posts li {
    grid-template-columns: 1fr;
    gap: 0.1rem;
  }
}

/* Content blocks */

blockquote {
  margin-left: 0;
  margin-right: 0;
  padding: 0.1rem 0 0.1rem 1rem;
  border-left: 6px solid var(--fg);
  font-weight: 700;
}

blockquote > :last-child {
  margin-bottom: 0;
}

hr {
  margin: 2.5rem 0;
  border: 0;
  border-top: 4px solid var(--fg);
}

img,
video,
iframe {
  display: block;
  max-width: 100%;
  height: auto;
  border: 2px solid var(--fg);
}

iframe {
  height: 500px;
}

figure {
  margin-left: 0;
  margin-right: 0;
}

figcaption {
  margin-top: 0.5rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  line-height: 1.5;
}

code,
pre {
  font-family: var(--mono);
  font-size: 0.85em;
}

code {
  padding: 0.05em 0.3em;
  border: 1px solid var(--fg);
}

pre {
  padding: 1rem;
  overflow-x: auto;
  border: 2px solid var(--fg);
}

pre code {
  padding: 0;
  border: 0;
}

table {
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 0.85rem;
}

th,
td {
  padding: 0.4rem 0.9rem;
  border: 2px solid var(--fg);
  text-align: left;
}

th {
  background: var(--fg);
  color: var(--bg);
  text-transform: uppercase;
}

li {
  margin-bottom: 0.3rem;
}