/* Landing page. Fonts are served from this site (fonts/, SIL OFL); nothing is fetched elsewhere.
   Motion: three authored moments (the terminal replay, the trace drawing in, the exit code), all
   off under prefers-reduced-motion. Everything else changes instantly. */
@font-face {
  font-family: "IBM Plex Sans";
  font-weight: 400;
  font-display: swap;
  src: url("fonts/ibm-plex-sans-latin-400-normal.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Sans";
  font-weight: 500;
  font-display: swap;
  src: url("fonts/ibm-plex-sans-latin-500-normal.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Sans";
  font-weight: 600;
  font-display: swap;
  src: url("fonts/ibm-plex-sans-latin-600-normal.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Mono";
  font-weight: 400;
  font-display: swap;
  src: url("fonts/ibm-plex-mono-latin-400-normal.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Mono";
  font-weight: 500;
  font-display: swap;
  src: url("fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2");
}

:root {
  --bg: #1b1d21;
  --bg-2: #17191c;
  --panel: #23262c;
  --line: #31353d;
  --line-2: #3b4049;
  --ink: #e8e6e1;
  --ink-2: #a3a7af;
  --ink-3: #8e939d;
  --amber: #f2b84b;
  --amber-soft: #3a2f17;
  --ok: #8fc98a;
  --alert: #e5736f;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --max: 1160px;
  color-scheme: dark;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
::selection {
  background: var(--amber-soft);
  color: var(--ink);
}
a {
  color: var(--ink);
  text-decoration-color: var(--line-2);
  text-underline-offset: 3px;
}
a:hover {
  text-decoration-color: var(--amber);
}
:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
  border-radius: 3px;
}
code,
pre {
  font-family: var(--mono);
}
p code,
li code,
td code,
summary code {
  font-size: 0.88em;
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0 4px;
}
h1,
h2,
h3 {
  font-weight: 600;
  letter-spacing: -0.02em;
  text-wrap: balance;
  margin: 0;
}
p {
  text-wrap: pretty;
}
.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  left: 16px;
  top: 12px;
  z-index: 10;
  background: var(--panel);
  padding: 6px 10px;
}

/* top bar */
.bar {
  position: sticky;
  top: 0;
  z-index: 5;
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color 200ms;
}
.bar.scrolled {
  border-bottom-color: var(--line);
}
.bar-in {
  max-width: var(--max);
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 17px;
  text-decoration: none;
}
.wordmark .ver {
  font: 500 12px var(--mono);
  color: var(--ink-3);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 1px 8px;
}
.bar nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 14px;
}
.bar nav a {
  color: var(--ink-2);
  text-decoration: none;
}
.bar nav a:hover {
  color: var(--ink);
}
.bar nav .gh {
  color: var(--ink);
  border: 1px solid var(--line-2);
  border-radius: 6px;
  padding: 3px 10px;
}
@media (max-width: 820px) {
  .bar nav .wide {
    display: none;
  }
}

/* layout */
main > section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 112px 24px 0;
}
.kicker {
  font: 500 13px var(--mono);
  color: var(--ink-3);
  margin: 0 0 14px;
}
.kicker b {
  color: var(--amber);
  font-weight: 500;
}
h2 {
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  line-height: 1.15;
  max-width: 24ch;
}
.sub {
  color: var(--ink-2);
  max-width: 64ch;
  margin: 16px 0 0;
  font-size: 17px;
}

/* hero */
main > section.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 56px;
  align-items: start;
  padding-top: 64px;
}
@media (max-width: 1000px) {
  main > section.hero {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}
.hero h1 {
  font-size: clamp(2.3rem, 4.4vw, 3.3rem);
  line-height: 1.04;
  letter-spacing: -0.035em;
}
.hero .lede {
  font-size: 18px;
  color: var(--ink-2);
  margin: 22px 0 0;
  max-width: 46ch;
}
.start {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.cmd {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-2);
  border: 1px solid var(--line-2);
  border-radius: 8px;
  padding: 8px 8px 8px 16px;
  font: 500 15px var(--mono);
}
.cmd .pr {
  color: var(--ink-3);
}
.btn {
  font: 500 14px var(--sans);
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--line-2);
  border-radius: 6px;
  padding: 7px 12px;
  text-decoration: none;
  cursor: pointer;
  transition:
    border-color 150ms,
    background-color 150ms;
}
.btn:hover {
  border-color: var(--ink-3);
}
.btn.primary {
  background: var(--amber);
  color: #1b1d21;
  border-color: var(--amber);
}
.btn.primary:hover {
  background: #f5c568;
}
.cmd .btn {
  padding: 4px 10px;
  font-size: 13px;
}
.facts {
  list-style: none;
  padding: 0;
  margin: 30px 0 0;
  display: grid;
  gap: 8px;
  font-size: 14.5px;
  color: var(--ink-2);
}
.facts li {
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.facts li::before {
  content: "";
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--amber);
  transform: translateY(-1px);
}
.facts li.inf::before {
  background: transparent;
  box-shadow: inset 0 0 0 1.5px var(--amber);
}

/* terminal */
.term {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 30px 60px -30px rgb(0 0 0 / 0.6);
}
.term-top {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
  font: 400 12px var(--mono);
  color: var(--ink-3);
}
.term-top .tabs {
  display: flex;
  gap: 4px;
}
.term-top .tab {
  font: inherit;
  color: var(--ink-3);
  background: none;
  border: 1px solid transparent;
  border-radius: 5px;
  padding: 3px 9px;
  cursor: pointer;
}
.term-top .tab:hover {
  color: var(--ink);
}
.term-top .tab[aria-selected="true"] {
  color: var(--ink);
  border-color: var(--line-2);
  background: var(--panel);
}
.term-top .replay {
  margin-left: auto;
  font: inherit;
  color: var(--ink-3);
  background: none;
  border: 0;
  cursor: pointer;
}
.term-top .replay:hover {
  color: var(--ink);
}
.term pre {
  margin: 0;
  padding: 16px 18px 18px;
  font: 400 12.5px/1.65 var(--mono);
  color: var(--ink-2);
  overflow-x: auto;
  height: 468px;
  white-space: pre;
}
@media (max-width: 600px) {
  .term pre {
    font-size: 11px;
    height: 420px;
  }
}
.term .l {
  display: block;
  min-height: 1.65em;
  overflow: hidden;
  text-overflow: ellipsis;
}
.term .l.hid {
  visibility: hidden;
}
.term .l.in {
  animation: line-in 240ms var(--ease) both;
}
@keyframes line-in {
  from {
    opacity: 0;
    transform: translateY(3px);
  }
}
.term .pr {
  color: var(--ink-3);
}
.term .typed {
  color: var(--ink);
}
.term .caret {
  display: inline-block;
  width: 0.6em;
  height: 1.15em;
  vertical-align: -0.22em;
  background: var(--amber);
  animation: blink 1s steps(1) infinite;
}
@keyframes blink {
  50% {
    opacity: 0;
  }
}
.term .h {
  color: var(--ink);
  font-weight: 500;
}
.term .c {
  color: var(--ink);
}
.term .add {
  color: var(--ok);
}
.term .del,
.term .fail {
  color: var(--alert);
}
.term .unk {
  color: var(--amber);
}
.term .dim {
  color: var(--ink-3);
}
.term .exit {
  color: #1b1d21;
  background: var(--alert);
  padding: 0 6px;
  border-radius: 3px;
  font-weight: 500;
}
.term-foot {
  border-top: 1px solid var(--line);
  padding: 8px 12px;
  font: 400 12px var(--mono);
  color: var(--ink-3);
}

/* strip */
main > section.strip {
  padding-top: 72px;
}
.strip ul {
  list-style: none;
  margin: 0;
  padding: 20px 0;
  border-block: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}
@media (max-width: 900px) {
  .strip ul {
    grid-template-columns: repeat(3, 1fr);
  }
}
.strip li {
  font-size: 13px;
  color: var(--ink-3);
  line-height: 1.4;
}
.strip b {
  display: block;
  font: 500 20px var(--mono);
  color: var(--ink);
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

/* trace */
.trace {
  margin-top: 48px;
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 30px;
}
@media (max-width: 960px) {
  .trace {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}
.trace svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: visible;
}
@media (max-width: 960px) {
  .trace svg {
    display: none;
  }
}
.trace svg path {
  fill: none;
  stroke: var(--amber);
  stroke-width: 1.5;
}
.trace svg path.inf {
  stroke-dasharray: 4 5;
}
.node {
  position: relative;
  z-index: 1;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px 14px 12px;
}
.node .role {
  font: 500 12px var(--mono);
  color: var(--ink-3);
  display: flex;
  align-items: center;
  gap: 7px;
}
.node .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--amber);
}
.node .name {
  font: 500 14px var(--mono);
  color: var(--ink);
  margin-top: 10px;
  overflow-wrap: anywhere;
}
.node .at {
  font: 400 12px var(--mono);
  color: var(--amber);
  margin-top: 6px;
}
.node .why {
  overflow-wrap: anywhere;
  font-size: 13px;
  color: var(--ink-2);
  margin-top: 8px;
  line-height: 1.45;
}
.node .badge {
  position: absolute;
  top: 12px;
  right: 12px;
  font: 500 11px var(--mono);
  color: var(--ok);
}
.js .reveal .node {
  opacity: 0;
  transform: translateY(6px);
}
.js .reveal.on .node {
  opacity: 1;
  transform: none;
  transition:
    opacity 360ms var(--ease),
    transform 360ms var(--ease);
  transition-delay: calc(var(--i) * 150ms);
}
.trace-legend {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  font-size: 13px;
  color: var(--ink-3);
}
.trace-legend span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.trace-legend i {
  width: 22px;
  border-top: 1.5px solid var(--amber);
}
.trace-legend .d {
  width: 8px;
  height: 8px;
  border: 0;
  border-radius: 50%;
  background: var(--amber);
}
.trace-legend .d.inf {
  background: transparent;
  box-shadow: inset 0 0 0 1.5px var(--amber);
}

/* source, both builds */
.split {
  margin-top: 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg-2);
}
.split > div {
  min-width: 0;
}
.split > div + div {
  border-left: 1px solid var(--line);
}
@media (max-width: 900px) {
  .split {
    grid-template-columns: 1fr;
  }
  .split > div + div {
    border-left: 0;
    border-top: 1px solid var(--line);
  }
}
.split h3 {
  font: 500 12px var(--mono);
  letter-spacing: 0;
  color: var(--ink-3);
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
}
.split h3 b {
  color: var(--ink);
  font-weight: 500;
}
.split pre {
  margin: 0;
  padding: 10px 0;
  font: 400 12.5px/1.75 var(--mono);
  color: var(--ink-2);
  overflow-x: auto;
}
.split .ln {
  display: block;
  padding: 0 14px;
}
.split .ln i {
  display: inline-block;
  width: 2.6em;
  color: var(--ink-3);
  font-style: normal;
  user-select: none;
}
.split .ln.del {
  background: color-mix(in srgb, var(--alert) 14%, transparent);
  color: var(--ink);
}
.split .ln.add {
  background: color-mix(in srgb, var(--ok) 13%, transparent);
  color: var(--ink);
}
.split .ln.ev {
  background: var(--amber-soft);
  color: var(--ink);
  box-shadow: inset 2px 0 0 var(--amber);
}
.notes {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
@media (max-width: 900px) {
  .notes {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}
.notes h3 {
  font-size: 15px;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 10px;
}
.notes p {
  margin: 8px 0 0;
  font-size: 14.5px;
  color: var(--ink-2);
}
.sym {
  font: 500 13px var(--mono);
  width: 22px;
  height: 22px;
  display: inline-grid;
  place-items: center;
  border-radius: 4px;
  background: var(--panel);
  border: 1px solid var(--line);
}
.sym.add {
  color: var(--ok);
}
.sym.unk {
  color: var(--amber);
}
.sym.mod {
  color: var(--ink);
}

/* gate */
.gate {
  margin-top: 48px;
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.55fr);
  gap: 22px;
  align-items: start;
}
@media (max-width: 960px) {
  .gate {
    grid-template-columns: 1fr;
  }
}
.gate .term pre {
  height: auto;
}
.codes {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 20px;
  display: grid;
  align-content: start;
}
.codes .label {
  font: 500 12px var(--mono);
  color: var(--ink-3);
}
.codes .big {
  font: 500 96px/1 var(--mono);
  letter-spacing: -0.05em;
  color: var(--alert);
  margin-top: 6px;
}
.js .codes .big {
  opacity: 0;
  transform: scale(0.96);
}
.js .codes.on .big {
  opacity: 1;
  transform: none;
  transition:
    opacity 300ms var(--ease) 500ms,
    transform 300ms var(--ease) 500ms;
}
.codes dl {
  margin: 18px 0 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 7px 14px;
  font-size: 14px;
}
.codes dt {
  font-family: var(--mono);
  color: var(--ink);
}
.codes dd {
  margin: 0;
  color: var(--ink-2);
}
.codes dt.hot {
  color: var(--alert);
}
details.yaml {
  margin-top: 22px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg-2);
}
details.yaml summary {
  cursor: pointer;
  padding: 13px 16px;
  font-size: 14.5px;
  color: var(--ink-2);
}
details.yaml summary:hover {
  color: var(--ink);
}
details.yaml pre {
  margin: 0;
  padding: 4px 16px 18px;
  font: 400 12.5px/1.6 var(--mono);
  color: var(--ink-2);
  overflow-x: auto;
}

/* two columns */
.two {
  margin-top: 48px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}
@media (max-width: 900px) {
  .two {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}
.two h3 {
  font-size: 16px;
  margin-bottom: 14px;
}
.checks {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.checks li {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
  color: var(--ink-2);
}
.checks li > span:last-child {
  font: 500 12px var(--mono);
  color: var(--ink-3);
  align-self: center;
}
.checks li > span.y {
  color: var(--ok);
}
.issues {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  font-size: 14.5px;
  color: var(--ink-2);
}
.issues a {
  font: 500 13px var(--mono);
  color: var(--ink);
}

/* comparison */
.table-wrap {
  margin-top: 40px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
  min-width: 760px;
}
th,
td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
tbody tr:last-child th,
tbody tr:last-child td {
  border-bottom: 0;
}
thead th {
  font-weight: 500;
  color: var(--ink-3);
  font-size: 13px;
  background: var(--bg-2);
}
thead th.us {
  color: var(--amber);
}
tbody th {
  font-weight: 500;
  width: 31%;
}
td {
  color: var(--ink-2);
}
td.yes {
  color: var(--ink);
}
td.yes::before {
  content: "● ";
  color: var(--amber);
}
td.no::before {
  content: "○ ";
  color: var(--ink-3);
}
.fine {
  font-size: 13px;
  color: var(--ink-3);
  margin-top: 14px;
  max-width: 86ch;
}

/* screenshots, snippets */
.shot {
  margin: 40px 0 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg-2);
}
.shot img {
  display: block;
  width: 100%;
  height: auto;
}
.shot figcaption {
  font-size: 13px;
  color: var(--ink-3);
  padding: 10px 14px;
  border-top: 1px solid var(--line);
}
.mini {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px;
  font: 400 13px/1.7 var(--mono);
  color: var(--ink-2);
  overflow-x: auto;
  margin: 0;
}
.mini .pr {
  color: var(--ink-3);
}
.mini .c {
  color: var(--ink);
}
.limits {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px 48px;
}
@media (max-width: 800px) {
  .limits {
    grid-template-columns: 1fr;
  }
}
.limits li {
  font-size: 15px;
  color: var(--ink-2);
  padding-left: 18px;
  position: relative;
}
.limits li::before {
  content: "–";
  position: absolute;
  left: 0;
  color: var(--ink-3);
}

/* end */
.end .box {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 40px;
  background: var(--bg-2);
}
.end .box p {
  color: var(--ink-2);
  max-width: 60ch;
}
footer {
  max-width: var(--max);
  margin: 72px auto 0;
  padding: 28px 24px 48px;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 13px;
  color: var(--ink-3);
  border-top: 1px solid var(--line);
}
footer a {
  color: var(--ink-2);
}
footer .sp {
  flex: 1;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
  .js .reveal .node,
  .js .codes .big {
    opacity: 1;
    transform: none;
  }
}

/* article pages (site/compare/*) */
main > section.doc {
  max-width: 760px;
  padding-top: 64px;
}
.doc h1 {
  font-size: clamp(2rem, 4vw, 2.7rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
}
.doc h2 {
  font-size: 1.35rem;
  margin-top: 44px;
  max-width: none;
}
.doc p,
.doc li {
  color: var(--ink-2);
}
.doc p strong,
.doc li strong {
  color: var(--ink);
  font-weight: 500;
}
.doc .answer {
  font-size: 18px;
  color: var(--ink);
  border-left: 2px solid var(--amber);
  padding-left: 16px;
  margin: 24px 0 0;
}
.doc ul,
.doc ol {
  padding-left: 20px;
}
.doc li + li {
  margin-top: 6px;
}
.doc .mini {
  margin-top: 16px;
}
.doc .table-wrap table {
  min-width: 560px;
}

/* line numbers on tinted rows: --ink-3 drops below 4.5:1 there */
.split .ln.add i,
.split .ln.del i,
.split .ln.ev i {
  color: var(--ink-2);
}