:root {
  --paper:#f6f5f1;
  --ink:#242433;
  --muted:#626171;
  --purple:#5140bc;
  --line:#dcdad4;
  --lavender:#ece9f8;
  --green:#24755f;
  --mono:ui-monospace,SFMono-Regular,Consolas,monospace;
  --sans:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
* {
  box-sizing:border-box}
html {
  scroll-behavior:smooth;
  scroll-padding-top:90px}
body {
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font:16px/1.65 var(--sans)}
a {
  color:var(--purple);
  text-underline-offset:4px}
a:hover {
  text-decoration:underline}
button,select,input {
  font:inherit}
button,select {
  cursor:pointer}
button:disabled {
  cursor:default;
  opacity:.42}
button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible {
  outline:3px solid var(--purple);
  outline-offset:4px}
code {
  font-family:var(--mono);
  font-size:.87em}
pre {
  overflow:auto;
  font:13px/1.8 var(--mono);
  tab-size:4}
pre code {
  font-size:inherit}
.wrap {
  max-width:1240px;
  padding:0 42px;
  margin:auto}
.header {
  position:sticky;
  top:0;
  z-index:5;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:20px max(30px,calc((100vw - 1156px)/2));
  background:rgba(246,245,241,.97);
  border-bottom:1px solid var(--line)}
.brand {
  display:flex;
  gap:10px;
  align-items:center;
  font-size:22px;
  font-weight:760;
  letter-spacing:-.7px;
  color:var(--ink);
  text-decoration:none;
  white-space:nowrap}
.version {
  font:11px var(--mono);
  border:1px solid var(--line);
  border-radius:4px;
  padding:4px 6px;
  margin-left:4px;
  letter-spacing:0;
  color:var(--muted)}
.mark {
  display:flex;
  flex-direction:column;
  gap:4px;
  width:23px}
.mark i {
  height:3px;
  border-radius:2px;
  background:var(--purple);
  width:100%}
.mark i:nth-child(2) {
  width:70%}
.mark i:nth-child(3) {
  width:40%}
.header nav {
  display:flex;
  gap:28px;
  font-size:14px}
.header nav a {
  color:var(--ink);
  text-decoration:none}
.header nav a:hover {
  color:var(--purple)}
.hero {
  display:grid;
  grid-template-columns:1.1fr 1fr;
  align-items:center;
  gap:55px;
  padding-top:88px;
  padding-bottom:88px}
.eyebrow {
  font:10px/1.8 var(--mono);
  font-weight:600;
  letter-spacing:1.8px;
  color:var(--muted)}
h1,h2,h3,p {
  margin-top:0}
h1 {
  font-size:clamp(38px,4.5vw,60px);
  font-weight:540;
  letter-spacing:-2.4px;
  line-height:1.12;
  margin:25px 0}
h1 em {
  font-style:normal;
  color:var(--purple)}
h2 {
  font-size:34px;
  font-weight:540;
  line-height:1.2;
  letter-spacing:-1.15px;
  margin-bottom:20px}
h3 {
  font-size:19px;
  line-height:1.4;
  letter-spacing:-.3px}
.intro {
  max-width:460px;
  font-size:18px;
  color:var(--muted);
  line-height:1.8}
.actions {
  display:flex;
  align-items:center;
  gap:22px;
  margin:30px 0 20px}
.button {
  display:inline-flex;
  align-items:center;
  gap:24px;
  padding:12px 19px;
  border-radius:6px;
  text-decoration:none;
  font-size:14px;
  font-weight:600}
.primary {
  background:var(--purple);
  color:white}
.primary:hover {
  background:#4434a3;
  text-decoration:none}
.text-link {
  font-size:13px;
  text-decoration:none}
.quiet {
  font-size:12px;
  color:var(--muted)}
.code-window {
  min-width:0;
  overflow:hidden;
  background:#222330;
  color:#e8e8f0;
  border-radius:10px;
  box-shadow:0 18px 42px #2d274016;
  border:1px solid #393948}
.window-top {
  display:flex;
  align-items:center;
  gap:9px;
  border-bottom:1px solid #454552;
  padding:13px 20px;
  font:11px var(--mono);
  color:#c4c3d3}
.window-top span:last-child {
  margin-left:auto}
.dot {
  width:6px;
  height:6px;
  background:#aaa0e8;
  border-radius:50%}
.code-window pre {
  padding:21px;
  margin:0;
  font-size:12px}
.muted {
  color:#aba8bd}
.accent {
  color:#bfb1ff}
.code-caption {
  padding:12px 20px;
  border-top:1px solid #454552;
  font-size:11px;
  color:#c4c3d3}
.section-heading {
  display:flex;
  justify-content:space-between;
  align-items:end;
  gap:60px;
  margin-bottom:28px}
.section-heading>p {
  max-width:365px;
  color:var(--muted);
  font-size:14px}
.explore {
  padding-top:42px;
  padding-bottom:60px;
  border-top:1px solid var(--line)}
.demo {
  border:1px solid #cecbd9;
  border-radius:10px;
  background:white;
  overflow:hidden}
.demo-toolbar {
  display:flex;
  align-items:center;
  gap:12px;
  padding:16px 24px;
  border-bottom:1px solid var(--line);
  font-size:12px}
.demo-toolbar select {
  font-size:13px;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:5px;
  padding:7px 32px 7px 10px;
  color:var(--ink);
  max-width:100%}
.demo-badge {
  margin-left:auto;
  color:var(--green);
  font:10px var(--mono)}
.demo-body {
  display:grid;
  grid-template-columns:.85fr 1.15fr;
  min-height:380px}
.event-panel {
  background:#f0eef7;
  padding:30px;
  border-right:1px solid #dcd8ec}
.event-panel h3 {
  font-size:24px;
  margin-bottom:14px}
.event-panel>p:not(.eyebrow):not(.quiet) {
  font-size:14px;
  color:var(--muted);
  min-height:66px}
.event-panel pre {
  font-size:12px;
  min-height:56px;
  padding:13px;
  border:1px solid #d9d4e9;
  border-radius:4px;
  white-space:pre-wrap;
  overflow-wrap:anywhere;
  background:#f8f7fc;
  color:#45377e}
.transport {
  display:flex;
  gap:8px;
  align-items:center}
.transport button {
  border:1px solid #ccc5df;
  background:white;
  border-radius:5px;
  padding:5px 15px;
  color:var(--ink);
  font-size:12px}
.transport button:nth-child(2) {
  flex:1}
.event-panel input {
  width:100%;
  margin:20px 0 6px;
  accent-color:var(--purple)}
.tree-panel {
  padding:28px;
  min-width:0}
.tree-heading {
  display:flex;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  border-bottom:1px solid var(--line);
  padding-bottom:20px;
  margin-bottom:10px}
.tree-heading strong {
  font:20px var(--mono);
  color:var(--purple)}
.node {
  margin-top:15px}
.node-children {
  border-left:1px solid #d6d2e4;
  margin-left:7px;
  padding-left:19px}
.node-heading {
  display:flex;
  align-items:center;
  gap:9px;
  flex-wrap:wrap;
  font-size:13px}
.node-name {
  font-weight:600}
.node-state {
  margin-left:auto;
  font:10px var(--mono);
  color:var(--muted)}
.status-dot {
  width:7px;
  height:7px;
  border-radius:50%;
  background:#c3c0cc}
.node[data-status="Running"]>.node-heading .status-dot {
  background:var(--purple)}
.node[data-status="Succeeded"]>.node-heading .status-dot {
  background:var(--green)}
.node[data-status="Cancelled"]>.node-heading .status-dot,.node[data-status="Failed"]>.node-heading .status-dot {
  background:#b3553f}
.node[data-status="NotRun"] {
  opacity:.68}
.track {
  height:5px;
  margin:8px 0;
  background:#eceaf1;
  border-radius:5px;
  overflow:hidden}
.track span {
  display:block;
  height:100%;
  background:#afa3e1;
  border-radius:5px}
.node[data-status="Succeeded"]>.track span {
  background:#79ac99}
.node[data-status="Cancelled"]>.track span {
  background:#c48667}
.tree-note {
  font-size:11px;
  color:var(--muted);
  margin:26px 0 0}
.node-details {
  font:10px var(--mono);
  color:var(--muted)}
.principles {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:46px;
  padding-top:20px;
  padding-bottom:72px}
.principles p {
  font-size:14px;
  color:var(--muted)}
.number {
  font:11px var(--mono);
  color:var(--purple);
  display:block;
  margin-bottom:14px}
.adoption {
  display:grid;
  grid-template-columns:.85fr 1.15fr;
  gap:100px;
  padding-top:70px;
  padding-bottom:70px;
  border-top:1px solid var(--line)}
.adoption>div>p:not(.eyebrow) {
  color:var(--muted);
  font-size:15px}
.adoption pre {
  background:#eae7e0;
  padding:16px 20px;
  border-radius:5px}
.crate-list>a {
  position:relative;
  display:block;
  color:var(--ink);
  text-decoration:none;
  padding:17px 35px 17px 0;
  border-bottom:1px solid var(--line)}
.crate-list>a:first-child {
  padding-top:0}
.crate-name {
  font-family:var(--mono);
  font-weight:700;
  margin-right:12px}
.crate-name+span {
  font-size:11px;
  color:var(--muted)}
.crate-list p {
  font-size:13px;
  margin:7px 0 0;
  color:var(--muted)}
.arrow {
  position:absolute;
  right:6px;
  top:22px;
  color:var(--purple)}
.crate-list>a:hover .crate-name {
  text-decoration:underline}
.reading {
  padding-bottom:70px}
.reading>div {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:30px}
.reading a {
  border-top:2px solid #c7bfeb;
  padding-top:18px;
  color:var(--ink);
  text-decoration:none}
.reading a>span {
  font:10px var(--mono);
  letter-spacing:1px;
  color:var(--muted)}
.reading h3 {
  margin:12px 0}
.reading a:hover h3 {
  color:var(--purple)}
.reading p {
  font-size:13px;
  color:var(--muted)}
footer {
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:26px max(30px,calc((100vw - 1156px)/2));
  font-size:12px;
  color:var(--muted)}
footer p {
  margin:0}
.docs-layout {
  display:grid;
  grid-template-columns:175px minmax(0,1fr) 155px;
  gap:40px;
  padding-top:40px;
  padding-bottom:80px;
  max-width:1400px}
.sidebar,.toc {
  position:sticky;
  top:115px;
  align-self:start}
.sidebar nav,.toc nav {
  display:flex;
  flex-direction:column;
  gap:12px;
  margin-bottom:35px;
  font-size:13px}
.sidebar nav a,.toc nav a {
  color:var(--muted);
  text-decoration:none;
  line-height:1.5}
.sidebar nav a:hover,.toc nav a:hover {
  color:var(--purple)}
.article {
  min-width:0}
.article h1 {
  font-size:40px;
  letter-spacing:-1.3px;
  margin:8px 0 30px}
.article h2 {
  font-size:27px;
  letter-spacing:-.7px;
  margin-top:42px}
.article h3 {
  margin-top:30px}
.article-body {
  font-size:15px}
.article-body pre {
  background:#eae8e1;
  border:1px solid var(--line);
  padding:20px;
  border-radius:6px;
  font-size:12px}
.article-body code:not(pre code) {
  background:#eae8e1;
  padding:2px 4px;
  border-radius:3px;
  overflow-wrap:anywhere}
.article-body img {
  max-width:100%}
.article-body table {
  display:block;
  overflow-x:auto;
  border-collapse:collapse;
  font-size:13px;
  width:100%;
  margin-bottom:24px}
.article-body th,.article-body td {
  text-align:left;
  border:1px solid var(--line);
  padding:10px;
  min-width:120px}
.article-body th {
  background:#eeece6}
.article-body h2 a,.article-body h3 a {
  color:inherit;
  text-decoration:none}
.article-body h2 a:hover,.article-body h3 a:hover {
  text-decoration:underline}
.toc {
  font-size:11px}
.toc nav a {
  font-size:11px}
.source-link {
  border-top:1px solid var(--line);
  margin-top:50px;
  padding-top:20px;
  font-size:12px}
.skip-link {
  position:absolute;
  left:15px;
  top:-80px;
  background:white;
  padding:10px;
  z-index:20}
.skip-link:focus {
  top:10px}
.sr-only {
  position:absolute;
  width:1px;
  height:1px;
  overflow:hidden;
  clip:rect(0,0,0,0)}
@media(max-width:1100px) {
  .hero {
  gap:25px}
.wrap {
  padding-left:28px;
  padding-right:28px}
.adoption {
  gap:50px}
.toc {
  display:none}
.docs-layout {
  grid-template-columns:175px minmax(0,1fr);
  gap:28px}
.actions {
  flex-wrap:wrap}
.header nav {
  gap:20px}
.code-window pre {
  font-size:11px}
}
@media(max-width:760px) {
  .header {
  padding:15px 20px;
  flex-wrap:wrap}
.header nav {
  font-size:12px;
  gap:18px}
.brand {
  font-size:20px}
.hero {
  grid-template-columns:1fr;
  padding-top:42px;
  padding-bottom:45px;
  gap:32px}
h1 {
  font-size:43px;
  letter-spacing:-1.8px}
.code-window pre {
  font-size:12px}
.wrap {
  padding-left:20px;
  padding-right:20px}
.intro {
  font-size:17px}
.section-heading {
  display:block}
.section-heading>p {
  max-width:none}
.demo-toolbar {
  padding:14px;
  flex-wrap:wrap}
.demo-badge {
  margin-left:0}
.demo-body {
  grid-template-columns:1fr}
.event-panel {
  border-right:0;
  border-bottom:1px solid #dcd8ec;
  padding:22px}
.event-panel>p:not(.eyebrow):not(.quiet) {
  min-height:0}
.tree-panel {
  padding:22px;
  min-height:300px}
.principles {
  grid-template-columns:1fr;
  gap:15px;
  padding-bottom:38px}
.adoption {
  grid-template-columns:1fr;
  gap:20px;
  padding-top:40px;
  padding-bottom:40px}
.reading>div {
  grid-template-columns:1fr;
  gap:18px}
.reading {
  padding-bottom:40px}
.docs-layout {
  display:block;
  padding-top:24px}
.sidebar {
  position:static;
  margin-bottom:30px}
.sidebar nav {
  flex-direction:row;
  flex-wrap:wrap;
  gap:10px 18px;
  margin-bottom:18px}
.sidebar>.eyebrow:nth-of-type(2),.sidebar nav[aria-label="API references"] {
  display:none}
.article h1 {
  font-size:33px}
.article-body pre {
  padding:13px;
  font-size:11px}
footer {
  padding:25px 20px;
  display:block}
footer .brand {
  margin-bottom:10px}
}
@media(prefers-reduced-motion:reduce) {
  html {
  scroll-behavior:auto}
}


.fork-diagram {
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:8px;
  padding:24px;
  background:#eeecf7;
  border-radius:16px;
  text-align:center}
.fork-diagram fieldset {
  border:1px solid #b5abd7;
  border-radius:12px;
  padding:16px;
  max-width:100%}
.fork-diagram legend {
  font-size:13px;
  padding:0 8px}
.branches {
  display:flex;
  gap:12px}
.branches span {
  padding:12px;
  background:white;
  border-radius:8px}

.giallo-l { display: inline-block; min-height: 1lh; width: 100%; }
.giallo-ln { display: inline-block; user-select: none; margin-right: .4em; padding: .4em; min-width: 3ch; text-align: right; opacity: .8; }
.article-body pre.giallo { background: #fff !important; }
.scenarios { display: flex; flex-wrap: wrap; gap: 6px; }
.scenarios button { border: 1px solid transparent; border-radius: 5px; background: transparent; padding: 8px 12px; font-size: 12px; color: var(--muted); }
.scenarios button:hover { background: var(--paper); color: var(--ink); }
.scenarios button[aria-pressed="true"] { background: var(--purple); color: white; }
.demo-toolbar { flex-wrap: wrap; gap: 10px; padding: 14px 20px; }
.demo-body { min-height: 470px; }
.event-panel { min-width: 0; }
.event-panel h3 { min-height: 68px; }
.event-panel > p:not(.eyebrow):not(.quiet) { min-height: 90px; }
.event-panel pre { min-height: 98px; }
.tree-panel { min-height: 440px; }
.track span { transition: width 70ms linear; }
.node[data-status="Skipped"] > .node-heading .status-dot { background: #947b4a; }
.node[data-status="Skipped"] > .track span { background: repeating-linear-gradient(45deg,#cec3a8,#cec3a8 4px,#e9e4d8 4px,#e9e4d8 8px); }
.node[data-status="Abandoned"] > .node-heading .status-dot { background: #b3553f; }
#smoothing { margin-top: 25px; padding: 18px; background: var(--paper); border-radius: 8px; }
.comparison-heading { display: flex; justify-content: space-between; gap: 10px; font-size: 12px; margin-top: 12px; }
.recorded span { background: var(--purple); transition: none; }
.smoothed span { background: var(--green); }
#smoothing .quiet { margin: 15px 0 0; }
#diagnostic { background: #fbf0e5; border: 1px solid #e4c5a4; border-radius: 8px; margin-top: 20px; padding: 16px; font-size: 12px; }
#diagnostic h4 { margin: 5px 0 10px; font-family: var(--mono); }
#diagnostic p { margin-bottom: 10px; }
@media (max-width: 760px) { .scenarios { gap: 4px; } .scenarios button { padding: 7px 9px; } .demo-toolbar { padding: 12px; } .event-panel h3 { min-height: 0; } .event-panel > p:not(.eyebrow):not(.quiet) { min-height: 70px; } .demo-badge { display: none; } }
@media (prefers-reduced-motion: reduce) { .track span { transition: none; } }

/* Reserve the same space across scenarios so playback never shifts the page. */
.demo-body { min-height: 620px; }
.tree-panel { min-height: 620px; }
.track { position: relative; }
.track .unknown-part { position: absolute; right: 0; top: 0; background: repeating-linear-gradient(135deg, #d3c8aa, #d3c8aa 3px, #eee9df 3px, #eee9df 6px); }
@media (max-width: 760px) {
  .event-panel h3 { min-height: 102px; }
  .event-panel > p:not(.eyebrow):not(.quiet) { min-height: 140px; }
  .event-panel pre { min-height: 120px; }
  .tree-panel { min-height: 650px; }
}

.tree-heading strong, .comparison-heading strong, .node-details { font-variant-numeric: tabular-nums; }
#diagnostic details { margin: 10px 0; }
#diagnostic summary { cursor: pointer; font-weight: 600; }
#diagnostic details p { margin: 10px 0; }

/* Display estimates and recorded counts remain distinct. */
.node[data-estimated="true"] > .track > span:first-child { background: var(--green); }
.node[data-execution="ForkJoin"] > .node-children { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-left: 0; padding-left: 0; border-left: 0; }
.node[data-execution="ForkJoin"] > .node-children > .node { border-top: 1px solid #d6d2e4; padding-top: 12px; }
.event-panel pre { height: 180px; min-height: 180px; overflow: auto; }
@media (max-width: 760px) {
  .node[data-execution="ForkJoin"] > .node-children { grid-template-columns: 1fr; gap: 0; }
}