:root {
  color-scheme: light;
  --paper: #f4f3ef;
  --surface: #fffefa;
  --ink: #202b29;
  --muted: #69756f;
  --line: #d5dcd3;
  --green: #2d755c;
  --green-soft: #e2ece5;
  --blue: #3d68a3;
  --code: #eaece7;
  --amber: #94652b;
  --amber-soft: #f1e8d7;
}
html[data-theme="dark"] {
  color-scheme: dark;
  --paper: #18201d;
  --surface: #202a24;
  --ink: #e2e9df;
  --muted: #a6b1a5;
  --line: #3c4c40;
  --green: #9ac6a6;
  --green-soft: #2d4434;
  --blue: #9fbfe8;
  --code: #28362c;
  --amber: #dfb16e;
  --amber-soft: #443b2c;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
a:hover {
  color: var(--green);
}
button,
select {
  font: inherit;
  color: inherit;
}
button {
  cursor: pointer;
}
button:disabled {
  opacity: 0.35;
  cursor: default;
}
a:focus-visible,
button:focus-visible,
select:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 4px;
}
h1,
h2,
h3,
h4,
p {
  margin: 0;
}
strong {
  font-weight: 600;
}
code,
pre {
  font-family: "SFMono-Regular", Consolas, monospace;
}
p code,
td code {
  font-size: 0.87em;
  overflow-wrap: anywhere;
  color: var(--green);
}
.skip-link {
  position: absolute;
  top: -80px;
  left: 20px;
  background: var(--ink);
  color: var(--paper);
  padding: 8px 15px;
  z-index: 20;
}
.skip-link:focus {
  top: 15px;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  padding: 0 5vw;
}
.brand {
  display: flex;
  align-items: center;
  gap: 17px;
}
.brand b {
  font:
    37px Georgia,
    serif;
  letter-spacing: -4px;
}
.brand > span {
  font-size: 11px;
  letter-spacing: 1.8px;
}
.brand i {
  font-style: normal;
  color: var(--muted);
  margin-left: 9px;
}
.site-header nav {
  display: flex;
  gap: 24px;
  align-items: center;
  font-size: 12px;
}
#theme-toggle {
  border: 1px solid var(--line);
  background: transparent;
  border-radius: 50%;
  width: 35px;
  height: 35px;
  padding: 0;
  font-size: 20px;
}
.layout {
  display: grid;
  grid-template-columns: 180px minmax(0, 900px);
  gap: 70px;
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 45px;
}
.contents {
  position: sticky;
  top: 80px;
  align-self: start;
  padding-top: 63px;
}
.eyebrow {
  color: var(--muted);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 1.6px;
}
.contents nav {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-top: 32px;
  font-size: 12px;
  color: var(--muted);
}
.version-note {
  margin-top: 32px;
  padding-top: 21px;
  border-top: 1px solid var(--line);
  font-size: 11px;
  color: var(--muted);
  line-height: 1.9;
}
.version-note strong {
  color: var(--ink);
  font-size: 13px;
  letter-spacing: 1px;
}
.version-note span {
  display: block;
  margin-top: 11px;
}
.hero {
  padding-top: 60px;
}
h1 {
  font-size: clamp(35px, 4.1vw, 56px);
  line-height: 1.27;
  font-weight: 600;
  letter-spacing: -1.3px;
  margin: 20px 0 22px;
}
.deck {
  font-size: 17px;
  color: var(--muted);
  line-height: 1.9;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  color: var(--muted);
  font-size: 11px;
  margin: 23px 0 33px;
}
.hero-meta a {
  color: var(--green);
}
.hero-route {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 26px 0;
  margin-bottom: 31px;
  font-size: 13px;
}
.hero-route b {
  color: var(--muted);
  font-weight: 400;
}
.hero-route code {
  color: var(--green);
  font-size: 15px;
  background: var(--green-soft);
  padding: 7px 12px;
}
main p {
  font-size: 14px;
  line-height: 1.95;
}
p + p {
  margin-top: 17px;
}
main .lead {
  font-size: 18px;
  line-height: 1.95;
  margin-bottom: 18px;
}
.hero > p:last-child {
  color: var(--muted);
  font-size: 12px;
}
.hero > p:last-child code {
  overflow-wrap: anywhere;
}
.article-section {
  border-top: 1px solid var(--line);
  padding-top: 37px;
  margin-top: 58px;
  scroll-margin-top: 105px;
}
.section-number {
  font-size: 10px;
  color: var(--green);
  letter-spacing: 1.8px;
  font-weight: 600;
  margin-bottom: 12px;
}
h2 {
  font-size: 28px;
  line-height: 1.5;
  font-weight: 600;
  letter-spacing: -0.3px;
  margin-bottom: 23px;
}
h3 {
  font-size: 19px;
  font-weight: 600;
  line-height: 1.6;
  margin: 28px 0 13px;
}
.ref {
  font-size: 11px;
  color: var(--green);
  margin-left: 6px;
  white-space: nowrap;
}
.table-wrap {
  margin: 25px 0;
  overflow-x: auto;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
table {
  border-collapse: collapse;
  width: 100%;
  min-width: 610px;
  font-size: 12px;
  line-height: 1.9;
}
th,
td {
  padding: 14px 12px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}
th {
  font-weight: 600;
}
thead th {
  font-size: 11px;
  color: var(--muted);
}
tbody th {
  width: 20%;
  min-width: 100px;
}
tr:last-child > * {
  border-bottom: 0;
}
th:first-child,
td:first-child {
  padding-left: 0;
}
th:last-child,
td:last-child {
  padding-right: 0;
}
.source-line {
  color: var(--muted);
}
main .source-line {
  font-size: 11px;
  line-height: 1.9;
}
.source-line a {
  color: var(--green);
}
.evidence-note {
  border-left: 2px solid var(--green);
  padding: 13px 0 13px 20px;
  margin: 25px 0;
}
.evidence-note > strong {
  font-size: 14px;
}
.evidence-note p {
  margin-top: 9px;
  font-size: 12px;
  color: var(--muted);
}
.evidence-note a {
  color: var(--green);
}
.figure {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 26px;
  margin: 26px 0;
}
.figure-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}
.figure-heading h3 {
  font-size: 20px;
  margin: 5px 0 22px;
}
.tag {
  font-size: 10px;
  white-space: nowrap;
  padding: 4px 7px;
  border-radius: 3px;
  line-height: 1.6;
}
.audit {
  background: var(--green-soft);
  color: var(--green);
}
.example {
  background: var(--amber-soft);
  color: var(--amber);
}
.segmented {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
}
.segmented button {
  background: transparent;
  border: 0;
  padding: 8px 22px;
  font-size: 12px;
}
.segmented button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--paper);
}
.flow {
  display: flex;
  align-items: center;
  gap: 9px;
  justify-content: space-between;
  margin: 30px 0 24px;
}
.flow > span {
  flex: 1;
  background: var(--code);
  text-align: center;
  padding: 15px 8px;
  font-size: 12px;
  line-height: 1.8;
}
.flow > span:first-child {
  background: var(--green-soft);
}
.flow > b {
  font-weight: 400;
  color: var(--muted);
}
.selected-detail {
  font-size: 12px;
  color: var(--muted);
  min-height: 45px;
  border-top: 1px solid var(--line);
  padding-top: 17px;
  line-height: 1.9;
}
.call-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.call-controls label {
  font-size: 11px;
  color: var(--muted);
}
select {
  display: block;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--paper);
  padding: 9px 12px;
  margin-top: 7px;
  font-size: 13px;
}
.endpoint {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 22px 0 12px;
}
.endpoint > span {
  font-size: 10px;
  color: var(--green);
  font-weight: 600;
}
.endpoint code {
  font-size: 13px;
  overflow-wrap: anywhere;
}
main .small {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.9;
}
.code-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 20px 0 11px;
  font-size: 11px;
  color: var(--muted);
}
.recipe-parts {
  display: flex;
  gap: 8px;
  margin-top: 19px;
}
.recipe-parts button {
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 5px 12px;
  font-size: 11px;
}
.recipe-parts button[aria-pressed="true"] {
  background: var(--green-soft);
  color: var(--green);
}
.code-heading button,
.step-controls button {
  border: 1px solid var(--line);
  border-radius: 3px;
  background: transparent;
  padding: 5px 12px;
  font-size: 11px;
}
pre {
  background: var(--code);
  margin: 0 0 11px;
  padding: 20px;
  font-size: 11px;
  line-height: 1.9;
  overflow-x: auto;
  tab-size: 2;
}
#copy-status {
  min-height: 21px;
}
.step-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 24px;
}
.step-list button {
  background: transparent;
  border: 1px solid var(--line);
  padding: 6px 9px;
  font-size: 10px;
  border-radius: 3px;
}
.step-list button[aria-pressed="true"] {
  background: var(--green-soft);
  color: var(--green);
  border-color: var(--green);
}
.step-head {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-bottom: 12px;
}
.step-head > span {
  font:
    28px Georgia,
    serif;
  color: var(--green);
}
.step-head h4 {
  font-size: 17px;
  font-weight: 600;
}
#step-explanation {
  min-height: 59px;
  margin-bottom: 19px;
  font-size: 13px;
}
#step-code {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.step-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 18px;
}
.step-controls > span {
  font-size: 11px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.two-paths {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 31px;
  margin: 28px 0;
}
.two-paths > div {
  border-top: 1px solid var(--line);
  padding-top: 15px;
}
.two-paths h3 {
  font-size: 17px;
  margin: 8px 0 12px;
}
.two-paths p {
  font-size: 12px;
}
.clock-boundaries {
  margin: 26px 0;
}
.clock-boundaries > div {
  padding: 15px 0;
  border-top: 1px solid var(--line);
}
.clock-boundaries span {
  color: var(--muted);
  display: block;
  font-size: 11px;
  margin-bottom: 7px;
}
.clock-boundaries strong {
  display: block;
  font-size: 13px;
  font-weight: 500;
}
.text-link {
  display: inline-block;
  margin-top: 22px;
  color: var(--green);
  font-size: 13px;
}
.source-list {
  margin: 26px 0;
  padding-left: 24px;
}
.source-list li {
  border-top: 1px solid var(--line);
  padding: 13px 0 13px 6px;
  scroll-margin-top: 105px;
}
.source-list li::marker {
  font-size: 11px;
  color: var(--green);
}
.source-list a {
  font-size: 13px;
  font-weight: 500;
}
.source-list span {
  display: block;
  font-size: 11px;
  color: var(--muted);
  margin-top: 4px;
}
footer {
  margin-top: 55px;
  padding: 26px 0 35px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 10px;
}
footer > div {
  display: flex;
  gap: 20px;
}
footer small {
  flex-basis: 100%;
  font-size: 9px;
}
@media (max-width: 1050px) {
  .layout {
    grid-template-columns: 145px minmax(0, 1fr);
    gap: 35px;
    padding: 0 28px;
  }
  .contents nav {
    font-size: 11px;
  }
  h1 {
    font-size: 44px;
  }
  .figure {
    padding: 22px;
  }
  .flow > span {
    font-size: 11px;
  }
}
@media (max-width: 780px) {
  .site-header {
    height: 68px;
    padding: 0 22px;
  }
  .site-header nav {
    gap: 17px;
    font-size: 11px;
  }
  .brand {
    gap: 10px;
  }
  .brand > span {
    font-size: 10px;
  }
  .brand i {
    display: none;
  }
  .layout {
    display: block;
    padding: 0 24px;
  }
  .contents {
    position: static;
    padding: 20px 0 0;
  }
  .contents > .eyebrow,
  .version-note {
    display: none;
  }
  .contents nav {
    margin: 0;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 7px 17px;
    padding-bottom: 17px;
    border-bottom: 1px solid var(--line);
    font-size: 10px;
  }
  .contents nav a:nth-child(n + 5) {
    display: none;
  }
  .hero {
    padding-top: 35px;
  }
  h1 {
    font-size: 39px;
  }
  .deck {
    font-size: 15px;
  }
  .article-section {
    margin-top: 47px;
    padding-top: 29px;
  }
  h2 {
    font-size: 25px;
  }
  .hero-route {
    font-size: 11px;
    gap: 6px;
  }
  .hero-route code {
    font-size: 12px;
    padding: 6px 9px;
  }
  .flow {
    gap: 7px;
  }
}
@media (max-width: 480px) {
  .site-header {
    padding: 0 17px;
  }
  .site-header nav > a:first-child {
    display: none;
  }
  .site-header nav {
    gap: 14px;
  }
  .brand b {
    font-size: 32px;
  }
  .layout {
    padding: 0 19px;
  }
  .hero > .eyebrow {
    font-size: 8px;
    letter-spacing: 1px;
  }
  h1 {
    font-size: clamp(28px, 7.9vw, 31px);
    letter-spacing: -0.6px;
    line-height: 1.35;
    margin-top: 16px;
  }
  .hero-meta {
    font-size: 10px;
    gap: 7px 13px;
  }
  .hero-route {
    flex-wrap: nowrap;
    justify-content: space-between;
    gap: 3px;
    padding: 19px 0;
  }
  .hero-route > span {
    font-size: 10px;
  }
  .hero-route code {
    font-size: 10px;
    padding: 5px 6px;
  }
  main .lead {
    font-size: 16px;
  }
  main p {
    font-size: 13px;
  }
  h2 {
    font-size: clamp(21px, 5.9vw, 23px);
  }
  h3 {
    font-size: 18px;
  }
  .figure {
    padding: 18px 14px;
    margin: 23px -3px;
  }
  .figure-heading {
    display: block;
  }
  .figure-heading h3 {
    font-size: 17px;
    margin-bottom: 12px;
  }
  .tag {
    font-size: 8px;
    padding: 4px 5px;
    display: inline-block;
    margin-bottom: 17px;
  }
  .eyebrow {
    font-size: 9px;
  }
  .segmented {
    width: 100%;
  }
  .segmented button {
    flex: 1;
    padding: 8px 10px;
    font-size: 11px;
  }
  .flow {
    flex-direction: column;
    gap: 7px;
    margin: 22px 0;
  }
  .flow > span {
    width: 100%;
    padding: 11px;
    font-size: 12px;
  }
  .flow > b {
    line-height: 1;
    transform: rotate(90deg);
  }
  .selected-detail {
    font-size: 11px;
    min-height: 73px;
  }
  .call-controls {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .endpoint {
    align-items: flex-start;
    gap: 9px;
  }
  .endpoint code {
    font-size: 11px;
  }
  pre {
    padding: 14px;
    font-size: 10px;
  }
  .step-list button {
    font-size: 9px;
    padding: 6px 7px;
  }
  .step-head h4 {
    font-size: 15px;
  }
  #step-explanation {
    font-size: 12px;
    min-height: 91px;
  }
  .two-paths {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .two-paths h3 {
    font-size: 16px;
  }
  .clock-boundaries strong {
    font-size: 12px;
  }
  .source-list a {
    font-size: 12px;
  }
  footer {
    display: block;
    font-size: 9px;
  }
  footer > div {
    margin: 16px 0;
    gap: 15px;
  }
  footer small {
    display: block;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}
@media print {
  .site-header,
  .contents,
  button,
  select {
    display: none;
  }
  .layout {
    display: block;
    padding: 0;
  }
  .figure {
    break-inside: avoid;
  }
  .table-wrap {
    overflow: visible;
  }
  table {
    min-width: 0;
  }
}