/* browsernerds.com — one design system for the whole site.
   Instrument panel (the front door reads your fingerprint live) +
   reference density (entries are dense, scannable, citable).
   Zero external assets: system font stacks only, so the page that measures
   your browser doesn't itself load anything from a third party. */

:root {
  color-scheme: dark;

  --bg: oklch(0.145 0.008 265);
  --bg-lift: oklch(0.181 0.008 265);
  --panel: oklch(0.204 0.009 265);
  --panel-hi: oklch(0.238 0.01 265);

  --fg: oklch(0.945 0.003 265);
  --fg-dim: oklch(0.735 0.008 265);
  --fg-faint: oklch(0.575 0.009 265);

  --line: oklch(0.288 0.009 265);
  --line-soft: color-mix(in oklch, var(--line) 55%, transparent);

  --accent: oklch(0.83 0.11 200);
  --accent-dim: color-mix(in oklch, var(--accent) 55%, transparent);

  /* the three-body nod, kept from the old splash */
  --orbit-a: oklch(0.72 0.17 350);
  --orbit-b: oklch(0.7 0.15 300);
  --orbit-c: oklch(0.78 0.11 205);
  --orbit: linear-gradient(90deg, var(--orbit-a), var(--orbit-b), var(--orbit-c));

  --ok: oklch(0.78 0.14 155);
  --warn: oklch(0.8 0.13 85);
  --bad: oklch(0.7 0.16 25);

  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --measure: 72ch;
  --gutter: clamp(1rem, 4vw, 2rem);
}

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

html {
  background: var(--bg);
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: color-mix(in oklch, var(--accent) 40%, transparent);
  color: oklch(0.98 0 0);
}

a { color: var(--accent); text-underline-offset: 3px; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 3px;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ============================ chrome ============================ */

.shell { display: flex; min-height: 100vh; flex-direction: column; }
.site-main { flex: 1; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line-soft);
  background: color-mix(in oklch, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
}

.site-header-inner {
  max-width: 78rem;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem var(--gutter);
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--fg);
}

/* Wide mark (specs), sized by height; width follows the SVG aspect. */
.site-logo { --logo-h: 30px; height: var(--logo-h); width: auto; flex-shrink: 0; }

.site-brand-text { display: flex; flex-direction: column; line-height: 1.2; }

.site-name { font-size: 1.05rem; font-weight: 700; letter-spacing: -0.01em; }

.site-handle {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--fg-faint);
  letter-spacing: 0;
}

.site-nav {
  display: flex;
  gap: 1.1rem;
  font-family: var(--mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.site-nav a {
  color: var(--fg-dim);
  text-decoration: none;
  padding: 0.2rem 0;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.site-nav a:hover { color: var(--fg); }
.site-nav a[aria-current="page"] { color: var(--fg); border-bottom-color: var(--accent); }

@media (max-width: 560px) {
  .site-header-inner { padding: 0.7rem var(--gutter); gap: 0.75rem; }
  .site-logo { --logo-h: 22px; }
  .site-name { white-space: nowrap; font-size: 0.95rem; }
  .site-handle { display: none; }
  .site-nav { gap: 0.8rem; font-size: 0.66rem; letter-spacing: 0.07em; }
  .rig-stats { gap: 1.25rem; }
}

/* Three nav links plus the wordmark overflow a 320px viewport; the logo alone is the brand there. */
@media (max-width: 400px) {
  .site-name { display: none; }
}

.site-footer {
  margin-top: 5rem;
  border-top: 1px solid var(--line-soft);
}

.site-footer-inner {
  max-width: 78rem;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.75rem var(--gutter);
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--fg-faint);
}

.site-footer nav { display: flex; gap: 1.1rem; }
.site-footer a { color: inherit; text-decoration: none; transition: color 0.15s ease; }
.site-footer a:hover { color: var(--accent); }

.wrap {
  max-width: 78rem;
  margin: 0 auto;
  padding: 2.5rem var(--gutter) 0;
}

.wrap-narrow {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 2.5rem var(--gutter) 0;
}

/* ======================= instrument panel ======================= */

.rig-intro {
  padding-top: 1.5rem;
  max-width: 60ch;
}

.rig-kicker {
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--fg-faint);
}

.rig-title {
  margin: 0.6rem 0 0;
  font-size: clamp(1.9rem, 5vw, 2.7rem);
  font-weight: 620;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.rig-sub {
  margin: 0.9rem 0 0;
  color: var(--fg-dim);
  font-size: 1.02rem;
}

/* the combined-fingerprint header block */
.rig-head {
  margin-top: 2rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background:
    radial-gradient(120% 140% at 0% 0%, color-mix(in oklch, var(--orbit-b) 12%, transparent), transparent 60%),
    var(--panel);
  padding: 1.25rem 1.35rem;
}

.rig-head-top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
}

.rig-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--fg-dim);
}

.rig-state {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--fg-faint);
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.rig-state::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--warn);
  animation: pulse 1.2s ease-in-out infinite;
}

.rig-head[data-state="done"] .rig-state::before { background: var(--ok); animation: none; }

@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.25; } }

.verdict-list {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: 10px;
  overflow: hidden;
}

.verdict {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0.6rem 0.8rem;
  background: var(--panel);
  text-decoration: none;
  transition: background 0.12s ease;
}

.verdict:hover { background: var(--panel-hi); }

.verdict-k {
  font-family: var(--mono);
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  color: var(--fg-faint);
}

.verdict-v {
  font-size: 0.92rem;
  color: var(--fg);
  line-height: 1.35;
}

/* anything that says the environment is unusual, rather than ordinary */
.verdict-v[data-flag] { color: var(--warn); }

.mono-sm { font-family: var(--mono); font-size: 0.8rem !important; word-break: break-all; }

#combined-hash-value {
  display: block;
  margin-top: 0.85rem;
  font-family: var(--mono);
  font-size: clamp(0.82rem, 2.6vw, 1.15rem);
  line-height: 1.45;
  letter-spacing: 0.01em;
  word-break: break-all;
  background: var(--orbit);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.rig-stats {
  margin-top: 1.1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
}

.rig-stat-k {
  display: block;
  font-family: var(--mono);
  font-size: 0.66rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--fg-faint);
}

.rig-stat-v {
  display: block;
  margin-top: 0.2rem;
  font-family: var(--mono);
  font-size: 1.05rem;
  color: var(--fg);
}

.rig-note {
  margin: 1.4rem 0 0;
  font-size: 0.84rem;
  color: var(--fg-faint);
  max-width: 68ch;
}

.rig-note strong { color: var(--fg-dim); font-weight: 600; }

/* the signal table — the instrument itself */
.rig {
  margin-top: 2.25rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
}

.rig-bar {
  display: grid;
  grid-template-columns: var(--cols);
  gap: 1rem;
  padding: 0.55rem 1.1rem;
  background: var(--bg-lift);
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.64rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--fg-faint);
}

.rig { --cols: minmax(9rem, 1.3fr) minmax(0, 1.4fr) minmax(8rem, 1fr) 5rem; }

.rig-row {
  display: grid;
  grid-template-columns: var(--cols);
  gap: 1rem;
  align-items: center;
  padding: 0.7rem 1.1rem;
  text-decoration: none;
  color: inherit;
  border-bottom: 1px solid var(--line-soft);
  transition: background 0.12s ease;
}

.rig-row:last-child { border-bottom: 0; }
.rig-row:hover { background: var(--panel); }

.rig-name { display: flex; flex-direction: column; gap: 0.15rem; min-width: 0; }

.rig-name b {
  font-weight: 570;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
}

.rig-row:hover .rig-name b { color: var(--accent); }

.rig-cat {
  font-family: var(--mono);
  font-size: 0.63rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--fg-faint);
}

.rig-val {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--fg-dim);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}

.rig-val[data-pending="1"] { color: var(--fg-faint); }
.rig-row[data-blocked="1"] .rig-val { color: var(--bad); }

/* What the signal is about. Sits where an entropy meter used to: repeated
   values down this column are the point — they show which signals overlap. */
.rig-reveals {
  font-family: var(--mono);
  font-size: 0.68rem;
  line-height: 1.45;
  color: var(--fg-faint);
}

.rig-more {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--fg-faint);
  text-align: right;
}

.rig-row:hover .rig-more { color: var(--accent); }

@media (max-width: 720px) {
  .rig { --cols: 1fr auto; }
  .rig-bar { display: none; }
  .rig-row { row-gap: 0.4rem; padding: 0.85rem 1rem; }
  .rig-val { grid-column: 1 / -1; white-space: normal; word-break: break-all; }
  .rig-reveals { grid-column: 1 / -1; }
  .rig-more { display: none; }
}

/* section heads on the panel page */
.rig-section {
  margin: 3.25rem 0 0;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--line-soft);
  padding-bottom: 0.6rem;
}

.rig-section h2 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.rig-section span {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--fg-faint);
}

/* ===================== entry pages (reference) ===================== */

.entry { max-width: var(--measure); margin: 0 auto; padding: 2.25rem var(--gutter) 0; }

.crumb {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--fg-faint);
  text-decoration: none;
}

.crumb:hover { color: var(--accent); }

.entry-head { margin-top: 1.25rem; }

.entry-kicker {
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--fg-faint);
}

.entry-title {
  margin: 0.5rem 0 0;
  font-size: clamp(1.65rem, 4.2vw, 2.15rem);
  font-weight: 620;
  line-height: 1.15;
  letter-spacing: -0.025em;
}

.entry-lede {
  margin: 0.75rem 0 0;
  color: var(--fg-dim);
  font-size: 1.02rem;
}

.entry-date {
  margin: 0.6rem 0 0;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--fg-faint);
}

/* spec strip: the citable summary */
.spec {
  margin-top: 1.75rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: 10px;
  overflow: hidden;
}

/* flex (not grid) so a partial last row stretches to fill instead of
   leaving a dead cell */
.spec > div {
  flex: 1 1 10.5rem;
  background: var(--panel);
  padding: 0.65rem 0.8rem;
}

.spec dt {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  color: var(--fg-faint);
}

.spec dd {
  margin: 0.28rem 0 0;
  font-size: 0.88rem;
  color: var(--fg);
}

/* break-word, not break-all: an API name like CompressionStream should wrap
   whole or overflow-scroll, never split mid-identifier */
.spec dd code {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--accent);
  overflow-wrap: break-word;
}

.spec .sp-ok { color: var(--ok); }
.spec .sp-warn { color: var(--warn); }
.spec .sp-bad { color: var(--bad); }

/* live readout */
.live {
  margin-top: 1.5rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  overflow: hidden;
}

.live-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem;
  padding: 0.6rem 1rem;
  background: var(--bg-lift);
  border-bottom: 1px solid var(--line);
}

.live-tag {
  font-family: var(--mono);
  font-size: 0.62rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: oklch(0.16 0.01 265);
  background: var(--ok);
  border-radius: 999px;
  padding: 0.12rem 0.5rem;
}

.live[data-state="blocked"] .live-tag { background: var(--bad); color: oklch(0.98 0 0); }

.live-status { font-family: var(--mono); font-size: 0.72rem; color: var(--fg-dim); }

.live-body { padding: 1rem; }

.live-visual { margin-bottom: 0.9rem; }

.live-canvas {
  max-width: 100%;
  border: 1px solid var(--line-soft);
  border-radius: 6px;
  display: block;
}

table.readout { width: 100%; border-collapse: collapse; font-size: 0.86rem; }
table.readout:empty { display: none; }

table.readout tr + tr th,
table.readout tr + tr td { border-top: 1px solid var(--line-soft); }

table.readout th,
table.readout td { padding: 0.42rem 0.2rem; text-align: left; vertical-align: top; }

table.readout th {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 400;
  color: var(--fg-faint);
  white-space: nowrap;
  width: 1%;
  padding-right: 1.2rem;
}

table.readout td code {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--fg);
  word-break: break-all;
}

.live-hash {
  margin-top: 0.9rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--line-soft);
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
}

.live-hash-k {
  font-family: var(--mono);
  font-size: 0.64rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--fg-faint);
}

.live-hash code {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--accent);
  word-break: break-all;
}

.live-error {
  margin: 0.5rem 0 0;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--bad);
}

/* ========================== prose ========================== */

.prose { margin-top: 2.5rem; font-size: 1.02rem; line-height: 1.72; }

.prose > * + * { margin-top: 1.3em; }

.prose h2 {
  margin-top: 2.5em;
  padding-top: 0.9em;
  border-top: 1px solid var(--line-soft);
  font-size: 1.15rem;
  font-weight: 620;
  letter-spacing: -0.012em;
}

.prose h3 { margin-top: 2em; font-size: 1.02rem; font-weight: 600; }
.prose h2 + *, .prose h3 + * { margin-top: 0.8em; }

.prose strong { font-weight: 640; color: var(--fg); }
.prose ul, .prose ol { padding-left: 1.3rem; }
.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose li + li { margin-top: 0.35em; }
.prose li::marker { color: var(--fg-faint); }

.prose blockquote {
  margin-inline: 0;
  padding: 0.1rem 0 0.1rem 1.1rem;
  border-left: 2px solid var(--accent-dim);
  color: var(--fg-dim);
}

.prose hr { border: 0; border-top: 1px solid var(--line-soft); }

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  display: block;
  overflow-x: auto;
}

.prose th, .prose td {
  border: 1px solid var(--line-soft);
  padding: 0.45rem 0.7rem;
  text-align: left;
  vertical-align: top;
}

.prose th {
  background: var(--bg-lift);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--fg-dim);
}

.prose :not(pre) > code {
  font-family: var(--mono);
  font-size: 0.85em;
  padding: 0.1em 0.34em;
  border-radius: 4px;
  background: var(--panel);
  border: 1px solid var(--line-soft);
  color: color-mix(in oklch, var(--fg) 80%, var(--accent));
}

/* ======================== code panels ======================== */

.code-panel {
  margin: 1.8em 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg-lift);
  overflow: hidden;
}

.code-panel-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.35rem 0.7rem;
  border-bottom: 1px solid var(--line);
  background: color-mix(in oklch, var(--bg-lift) 75%, black);
}

.code-panel-lang {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-faint);
}

.code-copy {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--fg-faint);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 5px;
  padding: 0.1rem 0.45rem;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.code-copy:hover { color: var(--accent); border-color: var(--line); }

.code-panel-body { margin: 0; padding: 0.9rem 1rem; overflow-x: auto; }

.code-panel-body code {
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.6;
  white-space: pre;
  color: var(--fg);
  background: none;
  padding: 0;
  border: 0;
}

.hljs-comment, .hljs-quote { color: oklch(0.56 0.012 265); font-style: italic; }
.hljs-keyword, .hljs-selector-tag, .hljs-literal, .hljs-type { color: oklch(0.76 0.12 310); }
.hljs-string, .hljs-regexp, .hljs-addition { color: oklch(0.8 0.11 150); }
.hljs-number, .hljs-symbol { color: oklch(0.81 0.1 70); }
.hljs-title, .hljs-title.function_, .hljs-section { color: oklch(0.83 0.1 250); }
.hljs-title.class_, .hljs-built_in, .hljs-class .hljs-title { color: oklch(0.84 0.09 90); }
.hljs-attr, .hljs-attribute, .hljs-variable, .hljs-template-variable, .hljs-property { color: oklch(0.83 0.08 205); }
.hljs-params { color: oklch(0.87 0.02 265); }
.hljs-deletion { color: var(--bad); }
.hljs-meta { color: oklch(0.71 0.06 240); }
.hljs-emphasis { font-style: italic; }
.hljs-strong { font-weight: 600; }

/* ========================= related rail ========================= */

.related {
  margin-top: 3rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.9rem;
}

.related-k {
  font-family: var(--mono);
  font-size: 0.66rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--fg-faint);
}

.related a {
  font-size: 0.88rem;
  text-decoration: none;
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  color: var(--fg-dim);
  transition: color 0.15s ease, border-color 0.15s ease;
}

.related a:hover { color: var(--accent); border-color: var(--accent-dim); }

/* ========================== blog list ========================== */

.post-list { margin: 2.5rem 0 0; padding: 0; list-style: none; }
.post-list li { padding: 1.5rem 0; border-top: 1px solid var(--line-soft); }

.post-link { display: block; text-decoration: none; color: inherit; }

.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.11em;
  color: var(--fg-faint);
}

.post-item-title {
  margin: 0.4rem 0 0;
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  transition: color 0.15s ease;
}

.post-link:hover .post-item-title { color: var(--accent); }

.post-item-desc { margin: 0.35rem 0 0; color: var(--fg-dim); font-size: 0.94rem; max-width: 64ch; }

.tag-row { margin-top: 0.6rem; display: flex; flex-wrap: wrap; gap: 0.4rem; }

.tag {
  border-radius: 999px;
  border: 1px solid var(--line-soft);
  padding: 0.1rem 0.5rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--fg-faint);
}

.post-nav {
  margin-top: 4rem;
  display: grid;
  gap: 1rem;
  border-top: 1px solid var(--line-soft);
  padding-top: 1.5rem;
}

.post-nav a { display: block; text-decoration: none; color: var(--fg-dim); transition: color 0.15s ease; }
.post-nav a:hover { color: var(--fg); }
.post-nav .nav-label { font-family: var(--mono); font-size: 0.66rem; text-transform: uppercase; letter-spacing: 0.12em; }
.post-nav .nav-title { margin-top: 0.2rem; display: block; font-size: 0.92rem; color: var(--fg); }

@media (min-width: 640px) {
  .post-nav { grid-template-columns: 1fr 1fr; }
  .post-nav .next { text-align: right; }
}