:root {
  --paper:#f4f0e8;
  --light:#fffaf0;
  --ink:#111317;
  --muted:#686963;
  --line:#c9c5bc;
  --blue:#1346e8;
  --red:#d84a26;
  --green:#16805c
}
* {
  box-sizing:border-box
}
html {
  scroll-behavior:smooth
}
body {
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font:16px/1.5 Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif
}
button,textarea,select,input {
  font:inherit
}
button {
  cursor:pointer
}
a {
  color:inherit
}
:focus-visible {
  outline:3px solid var(--blue);
  outline-offset:3px
}
.skip {
  position:absolute;
  top:-100px;
  left:12px;
  background:var(--ink);
  color:white;
  padding:10px;
  z-index:20
}
.skip:focus {
  top:12px
}
.site-header {
  min-height:72px;
  padding:14px clamp(18px,4vw,64px);
  border-bottom:1px solid var(--line);
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:14px
}
.brand {
  font-size:20px;
  font-weight:900;
  letter-spacing:-.05em;
  text-decoration:none
}
.site-header nav {
  display:flex;
  gap:20px;
  align-items:center;
  font-size:12px;
  font-weight:700
}
.site-header nav span {
  color:var(--blue);
  font-size:10px;
  letter-spacing:.13em
}
main {
  max-width:1540px;
  margin:auto
}
.intro {
  padding:clamp(48px,7vw,100px) clamp(18px,5vw,76px) 62px;
  border-bottom:1px solid var(--line)
}
.eyebrow {
  margin:0 0 12px;
  color:var(--blue);
  font-size:11px;
  font-weight:900;
  letter-spacing:.14em
}
.intro h1 {
  max-width:960px;
  margin:0 0 28px;
  font-size:clamp(48px,7vw,100px);
  line-height:.95;
  letter-spacing:-.07em
}
.intro h1 em {
  color:var(--blue);
  font-family:Georgia,serif;
  font-weight:400
}
.intro>p:not(.eyebrow) {
  max-width:850px
}
.notice {
  padding:14px 18px;
  background:var(--light);
  border-left:4px solid var(--blue);
  font-size:13px
}
.work,.results {
  padding:60px clamp(18px,5vw,76px)
}
.section-title h2,.preview-heading h2 {
  margin:0 0 27px;
  font-size:clamp(34px,4vw,58px);
  letter-spacing:-.055em;
  line-height:1
}
.input-actions,.run-actions,.export {
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap
}
.input-actions {
  margin-bottom:20px
}
.input-actions button,.file-button,.export button {
  padding:10px 14px;
  min-height:44px;
  background:var(--light);
  border:1px solid var(--ink);
  font-size:13px;
  font-weight:800
}
.file-button {
  display:inline-flex;
  align-items:center;
  cursor:pointer
}
#html-file {
  position:absolute;
  width:1px;
  height:1px;
  opacity:0
}
#file-name {
  font-size:12px;
  color:var(--muted);
  overflow-wrap:anywhere
}
.editors {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px
}
.editors>div {
  min-width:0
}
.editors label {
  display:flex;
  justify-content:space-between;
  gap:10px;
  font-weight:800;
  font-size:14px
}
.editors label span {
  color:var(--muted);
  font-size:11px;
  font-weight:500
}
.editors textarea {
  display:block;
  width:100%;
  min-height:270px;
  margin-top:8px;
  padding:14px;
  border:1px solid var(--ink);
  border-radius:0;
  background:var(--light);
  color:var(--ink);
  font:12px/1.5 ui-monospace,monospace;
  resize:vertical
}
.run-actions {
  justify-content:space-between;
  margin-top:18px
}
.check {
  font-size:13px;
  font-weight:700
}
.check input {
  accent-color:var(--blue)
}
.primary {
  min-height:50px;
  padding:0 22px;
  color:white;
  background:var(--blue);
  border:1px solid var(--blue);
  font-weight:800
}
.primary:disabled {
  opacity:.5
}
.status {
  min-height:42px;
  margin:18px 0 0;
  padding:10px 13px;
  background:#e8e4da;
  border-left:4px solid var(--blue);
  font-size:13px
}
.status.error {
  border-color:var(--red);
  color:#9c3017
}
.status.success {
  border-color:var(--green)
}
.results {
  border-top:1px solid var(--line)
}
.summary {
  font-size:19px;
  font-weight:800
}
.measure-wrap {
  overflow-x:auto
}
.measure-wrap table {
  width:100%;
  border-collapse:collapse;
  background:var(--light);
  font-variant-numeric:tabular-nums
}
.measure-wrap caption {
  text-align:left;
  font-size:12px;
  color:var(--muted);
  margin-bottom:8px
}
.measure-wrap th,.measure-wrap td {
  padding:12px;
  text-align:left;
  border:1px solid var(--line);
  font-size:13px
}
.detail-grid {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px;
  margin:22px 0 55px
}
.detail-grid>section {
  min-width:0;
  padding:22px;
  border:1px solid var(--ink);
  background:var(--light)
}
.detail-grid h3 {
  margin:0 0 12px;
  font-size:21px
}
.detail-grid p,.detail-grid li {
  font-size:13px
}
.detail-grid ul {
  padding-left:20px
}
.detail-grid li {
  margin-bottom:9px;
  overflow-wrap:anywhere
}
.detail-grid pre {
  max-height:270px;
  margin:0;
  padding:14px;
  overflow:auto;
  background:#15171b;
  color:#dce5ff;
  font:12px/1.5 ui-monospace,monospace;
  white-space:pre-wrap;
  overflow-wrap:anywhere
}
.preview-heading {
  display:flex;
  justify-content:space-between;
  gap:24px;
  align-items:end
}
.width-controls {
  display:grid;
  grid-template-columns:auto auto;
  gap:5px 12px;
  align-items:center;
  font-size:12px;
  font-weight:800
}
.width-controls input[type=range] {
  grid-column:1/-1;
  width:100%;
  accent-color:var(--blue)
}
.width-controls output {
  font-variant-numeric:tabular-nums;
  color:var(--blue)
}
.width-controls select {
  min-height:38px;
  padding:4px
}
.preview-note {
  font-size:12px;
  color:var(--muted)
}
.previews {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px
}
.previews article {
  min-width:0;
  border:1px solid var(--ink);
  background:var(--light)
}
.previews h3 {
  display:flex;
  justify-content:space-between;
  gap:6px;
  margin:0;
  padding:10px 14px;
  background:var(--ink);
  color:white;
  font-size:13px
}
.frame-width {
  font:11px ui-monospace,monospace;
  color:#bdd0ff
}
.stage {
  position:relative;
  min-height:340px;
  overflow:hidden;
  background:white
}
.stage iframe {
  position:absolute;
  top:0;
  left:0;
  height:900px;
  border:0;
  transform-origin:top left;
  background:white
}
.export {
  margin-top:26px;
  padding-top:20px;
  border-top:1px solid var(--line)
}
.export p {
  width:100%;
  font-size:12px;
  color:var(--muted)
}
.export button:disabled {
  opacity:.45;
  cursor:not-allowed
}
footer {
  padding:30px clamp(18px,5vw,76px);
  background:var(--ink);
  color:white;
  display:flex;
  justify-content:space-between;
  gap:20px;
  font-size:12px
}
footer a {
  color:white
}
@media(max-width:700px) {
  .editors,.detail-grid,.previews {
    grid-template-columns:1fr
  }
  .preview-heading {
    display:block
  }
  .width-controls {
    max-width:330px
  }
  .site-header nav span {
    display:none
  }
  .work,.results {
    padding-top:45px;
    padding-bottom:45px
  }
  .intro {
    padding-bottom:45px
  }
}
@media(max-width:390px) {
  .site-header nav a {
    font-size:11px
  }
  .measure-wrap th,.measure-wrap td {
    padding:7px;
    font-size:11px
  }
  .previews h3 {
    font-size:11px
  }
}