/* A small, dependency-free editorial surface for the developer preview. */

:root {
  color-scheme: dark;
  --navy: #0b1220;
  --navy-soft: #121e30;
  --ivory: #f5f3eb;
  --paper: #eeeee5;
  --ink: #152336;
  --teal: #26d6b5;
  --teal-ink: #086954;
  --muted: #adbdcc;
  --line: #2e3b4d;
  --paper-line: #cdd2cc;
  --body: 'Trebuchet MS','Segoe UI',sans-serif;
  --mono: 'Cascadia Code','Consolas','Liberation Mono',monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}

body {
  margin: 0;
  background: var(--navy);
  color: var(--ivory);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.65;
}

a {
  color: inherit;
  text-underline-offset: .22em;
  text-decoration-thickness: 1px;
}

a:hover {
  text-decoration-thickness: 2px;
}

button {
  font: inherit;
}

button,a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,a:focus-visible,summary:focus-visible,pre:focus-visible {
  outline: 3px solid var(--teal);
  outline-offset: 5px;
}

.paper-section a:focus-visible,.paper-section summary:focus-visible {
  outline-color: var(--teal-ink);
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

p,h1,h2,h3,figure {
  margin: 0;
}

p+p {
  margin-top: 1em;
}

code {
  font-family: var(--mono);
  font-size: .85em;
  overflow-wrap: anywhere;
}

em {
  font-family: Georgia,'Times New Roman',serif;
  font-weight: 400;
}

.wrap {
  width: min(1180px,calc(100% - 96px));
  margin-inline: auto;
}

.mono,.eyebrow,.step-number,.figure-label,.principle-index,.note-label {
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.5;
  font-weight: 500;
  letter-spacing: .12em;
}

.eyebrow {
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 24px;
}

.skip-link {
  position: fixed;
  z-index: 10;
  top: 12px;
  left: 12px;
  padding: 12px 20px;
  background: var(--teal);
  color: var(--navy);
  transform: translateY(-180%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  min-height: 108px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  border-bottom: 1px solid var(--line);
}

.wordmark {
  font-size: 20px;
  letter-spacing: -.055em;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 31px;
  border: 1px solid var(--teal);
  color: var(--teal);
  font-size: 28px;
  line-height: 1;
  vertical-align: middle;
  margin-right: 6px;
  border-radius: 5px;
}

.site-header nav {
  display: flex;
  gap: 29px;
  align-items: center;
  font-size: 12px;
}

.site-header nav a {
  text-decoration: none;
}

.site-header nav a:hover {
  color: var(--teal);
}

.language-link {
  border: 1px solid var(--line);
  padding: 4px 8px;
}

.hero {
  display: grid;
  grid-template-columns: 1.06fr 1fr;
  gap: 40px;
  align-items: center;
  padding-block: 95px 84px;
}

.hero h1 {
  font-size: clamp(48px,5.4vw,72px);
  line-height: 1.045;
  letter-spacing: -.055em;
  font-weight: 500;
  max-width: 640px;
}

.hero h1 em {
  display: block;
  color: var(--teal);
  letter-spacing: -.065em;
  line-height: 1.16;
}

.hero-description {
  max-width: 490px;
  margin-top: 25px;
  font-size: 17px;
  color: var(--muted);
  line-height: 1.8;
}

.status-dot {
  display: inline-block;
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  background: var(--teal);
  border-radius: 50%;
  margin-right: 8px;
  vertical-align: middle;
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 19px;
  min-height: 48px;
  padding: 12px 18px;
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background-color .18s,color .18s,border-color .18s;
}

.button:hover {
  text-decoration: none;
}

.button-primary {
  background: var(--teal);
  color: var(--navy);
}

.button-primary:hover {
  background: #86ead7;
}

.button-outline {
  border-color: #58677b;
}

.button-outline:hover {
  background: var(--navy-soft);
  border-color: var(--ivory);
}

.hero-note {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .01em;
  color: var(--muted);
  margin-top: 23px;
}

.hero-note span {
  margin-inline: 8px;
}

.hero-art {
  align-self: stretch;
  min-width: 0;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-image-crop {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1.08;
  background: #0b1421;
}

.hero-image-crop img {
  width: 225%;
  height: auto;
  max-width: none;
  position: absolute;
  top: -12%;
  right: -3%;
}

.hero-art figcaption {
  display: flex;
  justify-content: space-between;
  gap: 15px;
  align-items: center;
  border-top: 1px solid var(--line);
  padding-top: 20px;
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.hero-art .mono {
  font-size: 9px;
  color: var(--teal);
}

.principles {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  border-top: 1px solid var(--line);
  padding-block: 26px 32px;
  gap: 20px;
  font-size: 12px;
}

.principle-index {
  margin-right: 18px;
  color: var(--teal);
  font-size: 10px;
}

.section-space {
  padding-block: 94px;
}

.paper-section {
  background: var(--ivory);
  color: var(--ink);
  color-scheme: light;
}

.paper-section .eyebrow {
  color: var(--teal-ink);
}

h2 {
  font-size: clamp(35px,3.7vw,49px);
  font-weight: 500;
  line-height: 1.17;
  letter-spacing: -.045em;
}

h2 em {
  letter-spacing: -.035em;
}

.section-intro {
  max-width: 660px;
  margin-top: 24px;
  font-size: 16px;
  color: #516170;
}

.flow-notes {
  list-style: none;
  margin: 48px 0 44px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 38px;
}

.flow-notes li {
  padding-top: 18px;
  border-top: 1px solid var(--paper-line);
}

.step-number {
  color: var(--teal-ink);
  font-size: 10px;
}

.flow-notes h3 {
  font-size: 17px;
  margin-block: 12px 10px;
  letter-spacing: -.02em;
}

.flow-notes p {
  font-size: 13px;
  line-height: 1.85;
  color: #516170;
}

.diagram-frame {
  background: #fff;
  border: 1px solid var(--paper-line);
  padding: 18px 18px 0;
}

.diagram-image-link {
  display: block;
  background: #fff;
}

.diagram-image-link img {
  width: 100%;
  height: auto;
  object-fit: contain;
  max-height: 660px;
}

.diagram-frame figcaption {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  border-top: 1px solid var(--paper-line);
  padding: 16px 0;
  font-size: 11px;
}

.figure-label {
  font-size: 9px;
  color: var(--teal-ink);
  margin-right: 14px;
}

.figure-links {
  display: flex;
  gap: 19px;
  flex-shrink: 0;
}

.text-equivalent {
  border-bottom: 1px solid var(--paper-line);
  padding: 18px 0;
  color: #516170;
  font-size: 13px;
}

.text-equivalent summary {
  cursor: pointer;
  list-style-position: outside;
  margin-left: 17px;
  color: var(--ink);
}

.text-equivalent p {
  max-width: 920px;
  margin: 16px 0 0;
}

.section-footnote {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 25px;
  align-items: start;
  margin-top: 29px;
  font-size: 12px;
}

.note-label {
  font-size: 9px;
  color: var(--teal-ink);
  text-transform: uppercase;
  padding-top: 3px;
}

.section-footnote p {
  color: #516170;
  line-height: 1.85;
}

.section-footnote a {
  white-space: normal;
  color: var(--ink);
}

.demo-section {
  display: grid;
  grid-template-columns: .86fr 1.14fr;
  gap: 52px;
  align-items: center;
}

.demo-copy>p:not(.eyebrow) {
  font-size: 14px;
  color: var(--muted);
  margin-top: 24px;
}

.check-list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  font-size: 12px;
  color: var(--muted);
}

.check-list li {
  position: relative;
  padding: 7px 0 7px 22px;
}

.check-list li::before {
  content: '↳';
  color: var(--teal);
  position: absolute;
  left: 0;
}

.demo-copy .demo-result {
  font-size: 12px!important;
}

.demo-result code {
  color: var(--ivory);
}

.terminal {
  min-width: 0;
  background: #111d2c;
  border: 1px solid #354457;
  box-shadow: 14px 14px 0 #08101b;
}

.terminal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  min-height: 66px;
  padding: 15px 24px;
  border-bottom: 1px solid var(--line);
}

.terminal-header .mono {
  color: var(--muted);
  font-size: 9px;
}

.copy-button {
  border: 1px solid #66778b;
  color: var(--ivory);
  background: transparent;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 9px;
  min-height: 34px;
  padding: 7px 9px;
}

.copy-button:hover {
  border-color: var(--teal);
  color: var(--teal);
}

.terminal pre {
  margin: 0;
  padding: 35px 24px;
  overflow: auto;
  color: var(--ivory);
  font-size: 12px;
  line-height: 2.5;
}

.terminal pre code {
  font-size: inherit;
  overflow-wrap: normal;
}

.terminal-footer {
  border-top: 1px solid var(--line);
  padding: 18px 24px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted);
}

.copy-status {
  margin: 0;
  padding-inline: 24px;
  font-size: 11px;
  color: var(--teal);
}

.copy-status:not(:empty) {
  padding-block: 0 14px;
}

.stack-link {
  grid-column: 1/-1;
  display: grid;
  grid-template-columns: 210px 1fr;
  border-top: 1px solid var(--line);
  padding-top: 29px;
  gap: 24px;
  font-size: 12px;
  color: var(--muted);
}

.stack-link .mono {
  font-size: 9px;
  color: var(--teal);
  padding-top: 3px;
}

.stack-link a {
  color: var(--ivory);
}

.split-heading {
  display: grid;
  grid-template-columns: 1.18fr 1fr;
  gap: 64px;
  align-items: end;
}

.split-heading .section-intro {
  font-size: 14px;
  margin: 0;
}

.threshold-strip {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  margin-block: 45px 38px;
  border-block: 1px solid var(--paper-line);
  padding-block: 26px;
}

.threshold-strip>div {
  padding-inline: 26px;
  border-left: 1px solid var(--paper-line);
}

.threshold-strip>div:first-child {
  border-left: 0;
  padding-left: 0;
}

.threshold-strip strong {
  display: block;
  font-size: 30px;
  font-weight: 400;
  letter-spacing: -.04em;
  color: var(--teal-ink);
  line-height: 1.2;
}

.threshold-strip span {
  display: block;
  font-size: 11px;
  margin-top: 10px;
  color: #516170;
}

.signal-notes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-top: 28px;
  font-size: 12px;
  line-height: 1.9;
  color: #516170;
}

.signal-notes p+p {
  margin: 0;
}

.signal-notes strong {
  color: var(--ink);
}

.preview-section .section-intro {
  color: var(--muted);
}

.preview-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  margin-top: 43px;
}

.preview-columns>div {
  border-top: 1px solid var(--line);
  padding-top: 24px;
}

.preview-columns h3 {
  font-size: 17px;
  color: var(--teal);
}

.preview-columns>div+div h3 {
  color: var(--ivory);
}

.preview-columns ul {
  padding: 0;
  list-style: none;
  margin: 20px 0 0;
  font-size: 13px;
  color: var(--muted);
}

.preview-columns li {
  padding: 10px 0;
  border-bottom: 1px solid #1e2b3c;
}

.preview-links {
  display: flex;
  gap: 27px;
  flex-wrap: wrap;
  margin-top: 30px;
  font-size: 11px;
}

.contribute-section {
  background: var(--navy-soft);
  border-block: 1px solid var(--line);
}

.contribute-inner {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 80px;
  align-items: center;
  padding-block: 68px;
}

.contribute-inner p:not(.eyebrow) {
  color: var(--muted);
  font-size: 13px;
  max-width: 530px;
  margin-top: 25px;
}

.contribute-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 17px;
  justify-self: center;
}

.contribute-actions .text-link {
  font-size: 12px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 36px;
  padding-block: 49px 42px;
}

.site-footer p {
  font-size: 12px;
  color: var(--muted);
  margin-top: 7px;
}

.site-footer .footer-small {
  font-size: 10px;
  margin-top: 17px;
  max-width: 380px;
}

.site-footer nav {
  display: flex;
  gap: 25px;
  align-items: flex-start;
  padding-top: 5px;
  font-size: 11px;
}

.site-footer nav a {
  text-decoration: none;
}

.site-footer nav a:hover {
  text-decoration: underline;
}

@media(min-width:1450px) {
  .hero {
    padding-block: 110px 100px;
  }

  .hero h1 {
    font-size: 77px;
  }
}

@media(max-width:1050px) {
  .wrap {
    width: calc(100% - 64px);
  }

  .hero {
    gap: 24px;
    padding-block: 66px;
  }

  .hero h1 {
    font-size: 57px;
  }

  .hero-description {
    font-size: 15px;
  }

  .hero-art figcaption {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .hero-note span {
    margin-inline: 4px;
  }

  .flow-notes {
    gap: 26px;
  }

  .demo-section {
    gap: 35px;
  }

  .terminal-header {
    padding-inline: 18px;
  }

  .terminal pre {
    padding-inline: 18px;
    font-size: 10px;
  }

  .split-heading {
    gap: 35px;
  }

  .figure-links {
    gap: 12px;
  }

  .diagram-frame figcaption {
    font-size: 10px;
  }

  .contribute-inner {
    gap: 35px;
  }

  .site-header nav {
    gap: 19px;
  }

  .section-space {
    padding-block: 76px;
  }
}

@media(max-width:760px) {
  .wrap {
    width: calc(100% - 40px);
  }

  .site-header {
    min-height: 94px;
    flex-wrap: wrap;
    gap: 12px;
    padding-block: 18px;
  }

  .wordmark {
    font-size: 19px;
  }

  .site-header nav {
    gap: 18px;
    font-size: 11px;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-block: 58px 34px;
    gap: 25px;
  }

  .hero-copy {
    max-width: 560px;
  }

  .hero h1 {
    font-size: clamp(45px,9.4vw,65px);
  }

  .hero-description {
    max-width: 560px;
  }

  .hero-art {
    max-width: 530px;
    width: 100%;
    justify-self: center;
  }

  .hero-image-crop {
    aspect-ratio: 1.58;
  }

  .hero-image-crop img {
    top: -27%;
    width: 225%;
    right: -5%;
  }

  .hero-art figcaption {
    flex-direction: row;
    gap: 15px;
  }

  .principles {
    gap: 17px;
    padding-block: 23px;
    font-size: 10px;
  }

  .principle-index {
    display: block;
    margin-bottom: 5px;
  }

  .section-space {
    padding-block: 58px;
  }

  h2 {
    font-size: 38px;
  }

  .section-intro {
    font-size: 14px;
  }

  .flow-notes {
    grid-template-columns: 1fr;
    gap: 24px;
    margin-block: 34px;
  }

  .flow-notes h3 {
    margin-top: 8px;
  }

  .flow-notes p {
    max-width: 620px;
  }

  .diagram-frame {
    padding: 9px 9px 0;
  }

  .diagram-frame figcaption {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding-block: 13px;
  }

  .figure-links {
    gap: 20px;
  }

  .section-footnote {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .demo-section {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .demo-copy>p:not(.eyebrow) {
    font-size: 14px;
  }

  .terminal pre {
    font-size: 12px;
    padding: 28px 20px;
  }

  .terminal-header,.terminal-footer {
    padding-inline: 20px;
  }

  .stack-link {
    grid-template-columns: 1fr;
    gap: 10px;
    margin-top: 15px;
  }

  .split-heading {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .split-heading .section-intro {
    max-width: 620px;
  }

  .threshold-strip {
    grid-template-columns: 1fr 1fr;
    gap: 25px 0;
    padding-block: 24px;
    margin-block: 30px;
  }

  .threshold-strip>div {
    padding-inline: 20px;
  }

  .threshold-strip>div:nth-child(odd) {
    padding-left: 0;
    border-left: 0;
  }

  .threshold-strip strong {
    font-size: 28px;
  }

  .threshold-strip span {
    font-size: 10px;
  }

  .signal-notes {
    grid-template-columns: 1fr;
    gap: 18px;
    margin-top: 24px;
  }

  .preview-columns {
    grid-template-columns: 1fr;
    gap: 30px;
    margin-top: 30px;
  }

  .preview-columns li {
    font-size: 12px;
  }

  .preview-links {
    gap: 18px;
  }

  .contribute-inner {
    grid-template-columns: 1fr;
    padding-block: 50px;
    gap: 27px;
  }

  .contribute-actions {
    justify-self: start;
  }

  .site-footer {
    flex-direction: column;
    gap: 25px;
    padding-block: 35px;
  }

  .site-footer nav {
    gap: 24px;
    flex-wrap: wrap;
  }

  .eyebrow {
    font-size: 10px;
    margin-bottom: 18px;
  }
}

@media(max-width:390px) {
  .wrap {
    width: calc(100% - 32px);
  }

  .site-header nav {
    width: 100%;
    justify-content: space-between;
    gap: 12px;
  }

  .hero h1 {
    font-size: 43px;
  }

  .actions {
    gap: 10px;
  }

  .button {
    padding: 12px 14px;
    gap: 10px;
    font-size: 11px;
  }

  .hero-note {
    font-size: 8px;
  }

  .hero-art figcaption {
    font-size: 10px;
  }

  .hero-art .mono {
    font-size: 8px;
  }

  h2 {
    font-size: 32px;
  }

  .terminal pre {
    font-size: 10px;
    padding-inline: 14px;
  }

  .terminal-header,.terminal-footer {
    padding-inline: 14px;
  }

  .terminal-header {
    gap: 7px;
  }

  .terminal-header .mono {
    font-size: 8px;
  }

  .terminal-footer {
    font-size: 8px;
  }

  .copy-button {
    font-size: 8px;
  }

  .principles {
    gap: 12px;
  }

  .figure-links {
    gap: 13px;
    font-size: 9px;
  }

  .site-footer nav {
    gap: 19px;
  }
}

@media(prefers-reduced-motion:reduce) {
  html {
    scroll-behavior: auto;
  }

  *,*::before,*::after {
    transition: none!important;
    animation: none!important;
  }
}