:root {
  --paper: #ffffff;
  --ink: #101010;
  --muted: #555;
  --faint: #8a8a8a;
  --line: #d8d8d8;
  --soft: #f6f4ef;
  --soft2: #eeeeea;
  --max: 1180px;
  --measure: 760px;
  --serif: Georgia, "Iowan Old Style", "Palatino Linotype", Palatino, "Times New Roman", serif;
  --sans: "Arial Narrow", "Aptos Narrow", "Liberation Sans Narrow", Arial, sans-serif;
  --mono: "Courier New", Courier, monospace;
}

html[data-theme="dark"] {
  --paper: #0f0f0f;
  --ink: #f4f1e8;
  --muted: #beb9ad;
  --faint: #8e887c;
  --line: #333;
  --soft: #171717;
  --soft2: #202020;
}

* {
  box-sizing: border-box
}

html {
  scroll-behavior: smooth
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.55;
  letter-spacing: .005em;
}

a {
  color: inherit;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px
}

.container {
  width: min(var(--max), calc(100% - 44px));
  margin: 0 auto
}

.measure {
  max-width: var(--measure)
}

.skip {
  position: absolute;
  left: -9999px
}

.skip:focus {
  left: 1rem;
  top: 1rem;
  background: var(--ink);
  color: var(--paper);
  z-index: 999;
  padding: .5rem .75rem
}

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav {
  height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem
}

.brand {
  display: flex;
  align-items: center;
  gap: .8rem;
  text-decoration: none
}

.brand img {
  width: 34px;
  height: 34px;
  object-fit: contain;
  filter: grayscale(1) contrast(1.2)
}

html[data-theme="dark"] .brand img {
  filter: invert(1) grayscale(1) contrast(1.2)
}

.wordmark {
  font-family: var(--serif);
  font-weight: 700;
  letter-spacing: .19em;
  font-size: 18px
}

.links {
  display: flex;
  align-items: center;
  gap: 1.35rem;
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .09em
}

.links a {
  text-decoration: none;
  color: var(--muted)
}

.links a:hover,
.links a.active {
  color: var(--ink)
}

.theme,
.menu {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 12px;
  padding: .45rem .6rem;
  cursor: pointer;
}

.menu {
  display: none
}

.hero {
  padding: clamp(5rem, 10vw, 10rem) 0 4.5rem;
  border-bottom: 1px solid var(--line)
}

.kicker {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--faint);
  margin-bottom: 1.2rem
}

h1,
h2,
h3 {
  font-family: var(--serif);
  font-weight: 300;
  line-height: 1.04;
  letter-spacing: -.025em;
  margin: 0
}

h1 {
  font-size: clamp(3rem, 4vw, 5rem);
  max-width: 1040px
}

h2 {
  font-size: clamp(2rem, 3vw, 3.5rem);
  margin-bottom: 1.3rem
}

h3 {
  font-size: clamp(1.35rem, 2vw, 2rem);
  margin-bottom: .7rem
}

.lede {
  font-family: var(--serif);
  font-size: clamp(1.2rem, 2vw, 1.55rem);
  line-height: 1.55;
  color: var(--muted);
  margin-top: 2rem;
  max-width: 820px
}

.section {
  padding: 4.8rem 0;
  border-bottom: 1px solid var(--line)
}

.two {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem
}

.three {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.2rem
}

.block {
  border-top: 1px solid var(--ink);
  padding-top: 1.25rem
}

.block p,
.muted {
  color: var(--muted)
}

.more {
  display: inline-block;
  margin-top: 1rem;
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .08em
}

.notice {
  border: 1px solid var(--line);
  padding: 1rem;
  background: var(--soft);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted)
}

.timeline-wrap {
  margin-top: 2rem
}

.timeline {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(250px, 1fr);
  overflow-x: auto;
  border: 1px solid var(--line);
  background: var(--line)
}

.node {
  min-height: 250px;
  padding: 1.15rem;
  background: var(--paper);
  border: 0;
  border-right: 1px solid var(--line);
  color: var(--ink);
  text-align: left;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.node:hover,
.node[aria-expanded="true"] {
  background: var(--soft)
}

.node h3 {
  font-size: 1.32rem;
  margin: 1.3rem 0 .7rem
}

.node-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem
}

.num,
.cat {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--faint);
  text-transform: uppercase;
  letter-spacing: .08em
}

.status {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  border: 1px solid var(--line);
  padding: .2rem .45rem;
  white-space: nowrap
}

.status.in-progress {
  border-color: var(--ink);
  color: var(--ink)
}

.status.live {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink)
}

.status.planned {
  color: var(--faint)
}

.summary {
  display: none;
  border: 1px solid var(--line);
  border-top: 0;
  background: var(--soft);
  padding: 1.25rem
}

.summary.active {
  display: block
}

.summary p {
  max-width: 800px;
  color: var(--muted);
  margin: 0
}

.milestone {
  margin: 2rem 0;
  border-top: 3px double var(--ink);
  border-bottom: 3px double var(--ink);
  padding: 1rem 0;
  text-align: center;
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .1em
}

.doc {
  display: grid;
  grid-template-columns: 270px 1fr;
  gap: 4rem;
  align-items: start
}

.toc {
  position: sticky;
  top: 100px;
  border-right: 1px solid var(--line);
  padding-right: 1rem;
  max-height: calc(100vh - 120px);
  overflow: auto
}

.toc a {
  display: block;
  text-decoration: none;
  color: var(--muted);
  font-size: 13px;
  padding: .34rem 0
}

.toc a:hover {
  color: var(--ink)
}

.prose {
  max-width: 780px;
  font-family: var(--serif);
  font-size: 1.08rem;
  line-height: 1.78
}

.prose h2 {
  margin: 3rem 0 1rem
}

.prose h3 {
  margin: 2rem 0 .8rem
}

.prose p {
  margin: 0 0 1.25rem
}

.rows {
  border: 1px solid var(--line);
  background: var(--line);
  display: grid;
  gap: 1px
}

.row {
  display: grid;
  grid-template-columns: 80px 1fr 160px 130px;
  gap: 1rem;
  background: var(--paper);
  padding: 1.2rem;
  text-decoration: none
}

.row:hover {
  background: var(--soft)
}

.row-title {
  font-family: var(--serif);
  font-size: 1.34rem
}

.bloggrid {
  display: grid;
  grid-template-columns: 220px 1fr 230px;
  gap: 3.4rem
}

.side {
  position: sticky;
  top: 100px;
  border-top: 1px solid var(--ink);
  padding-top: 1rem
}

.post {
  border-bottom: 1px solid var(--line);
  padding: 1.5rem 0
}

.post a {
  text-decoration: none
}

.meta {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--faint);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: .4rem
}

.footer {
  border-top: 1px solid var(--line);
  padding: 3rem 0
}

.footergrid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 2rem
}

.footer a {
  display: block;
  text-decoration: none;
  color: var(--muted);
  margin: .25rem 0
}

.disclaimer {
  margin-top: 2rem;
  color: var(--faint);
  font-size: 12px;
  max-width: 980px
}

.print {
  font-family: var(--mono);
  font-size: 12px;
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  padding: .55rem .75rem;
  cursor: pointer
}

@media(max-width:900px) {
  .nav {
    height: auto;
    min-height: 74px;
    position: relative
  }

  .menu {
    display: inline-block
  }

  .links {
    display: none;
    position: absolute;
    top: 74px;
    left: 0;
    right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 1rem 22px;
    flex-direction: column;
    align-items: flex-start
  }

  .links.open {
    display: flex
  }

  .two,
  .three,
  .doc,
  .bloggrid,
  .footergrid {
    grid-template-columns: 1fr
  }

  .toc,
  .side {
    position: static;
    border-right: 0;
    border-top: 1px solid var(--line);
    padding-top: 1rem;
    max-height: none
  }

  .timeline {
    grid-auto-flow: row;
    grid-auto-columns: auto;
    overflow: visible
  }

  .node {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line)
  }

  .row {
    grid-template-columns: 1fr
  }
}

@media print {

  .header,
  .footer,
  .print {
    display: none !important
  }

  body {
    background: white;
    color: black
  }

  .container {
    width: 100%
  }
}