:root {
  --paper: #ededea;
  --ink: #111;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  font-family: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  font-weight: 400;
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 64px 32px 120px;
}

a { color: var(--ink); }

h1 {
  font-family: "IBM Plex Mono", monospace;
  font-weight: 600;
  font-size: 22px;
  letter-spacing: 0;
  line-height: 1.3;
  margin: 40px 0 14px;
}

.article-head,
.experiment-head,
.investigation-head { margin: 56px 0 28px; }

.article-head h1,
.experiment-head h1,
.investigation-head h1 {
  font-size: 24px;
  margin: 0 0 12px;
}

.subtitle,
.summary {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.6;
  max-width: 62ch;
}

.index-bar,
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--paper);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  padding: 8px 0;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.index-bar {
  margin-top: 48px;
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
}

.index-bar a,
.nav a {
  text-decoration: none;
  color: var(--ink);
}

.index-bar a:hover,
.nav a:hover { text-decoration: underline; }

.index-bar .num,
.nav .num { margin-right: 6px; opacity: 0.55; }

.nav {
  display: flex;
  justify-content: space-between;
}

.nav .crumbs {
  display: flex;
  gap: 18px;
}

section { margin-top: 64px; }
section.body { margin-top: 56px; }

.section-head {
  border-bottom: 1px solid var(--ink);
  padding-bottom: 6px;
  margin-bottom: 20px;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
}

.section-intro {
  margin: -8px 0 22px;
  font-size: 13px;
  line-height: 1.6;
  max-width: 62ch;
  opacity: 0.85;
}

.intro p,
section.body p {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.65;
  text-wrap: pretty;
  max-width: 62ch;
}

.intro p:last-child,
section.body p:last-child { margin-bottom: 0; }

section.body ul {
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
}

section.body ul li,
.stack-row li {
  padding-left: 16px;
  position: relative;
}

section.body ul li {
  padding-top: 3px;
  padding-bottom: 3px;
  font-size: 13px;
  line-height: 1.6;
  max-width: 62ch;
}

section.body ul li::before,
.stack-row li::before {
  content: "-";
  position: absolute;
  left: 0;
  opacity: 0.6;
}

section.body h3 {
  font-family: "IBM Plex Mono", monospace;
  font-weight: 500;
  font-size: 14px;
  margin: 18px 0 8px;
}

.papers { display: grid; }

.paper-row {
  display: grid;
  grid-template-columns: 56px 1fr 130px;
  gap: 20px;
  padding: 12px 0;
  border-bottom: 1px solid var(--ink);
  align-items: baseline;
}

.paper-row:first-child { border-top: 1px solid var(--ink); }
.paper-row .yr { font-weight: 500; }
.paper-row .ttl { line-height: 1.45; }

.paper-row .ttl .auth {
  display: block;
  font-size: 12px;
  opacity: 0.65;
  margin-top: 2px;
}

.paper-row .venue {
  font-size: 11px;
  text-align: right;
  opacity: 0.7;
}

.paper-row .venue a {
  display: inline-block;
  margin-top: 2px;
}

.card-item {
  display: grid;
  grid-template-columns: 70px 1fr auto;
  column-gap: 20px;
  row-gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--ink);
}

.card-item:first-child { border-top: 1px solid var(--ink); }

.card-item .yr {
  grid-column: 1;
  grid-row: 1;
  font-weight: 500;
  font-size: 13px;
}

.card-item .title {
  grid-column: 2;
  grid-row: 1;
  font-weight: 500;
  font-size: 14px;
  line-height: 1.4;
}

.card-item .status {
  grid-column: 3;
  grid-row: 1;
  text-align: right;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.7;
  align-self: baseline;
}

.card-item .desc {
  grid-column: 2 / span 2;
  grid-row: 2;
  font-size: 13px;
  line-height: 1.55;
  max-width: 62ch;
}

.card-item .meta {
  grid-column: 2;
  grid-row: 3;
  font-size: 11px;
  letter-spacing: 0.04em;
  opacity: 0.7;
  margin-top: 2px;
}

.card-item .open {
  grid-column: 3;
  grid-row: 3;
  text-align: right;
  font-size: 12px;
  align-self: end;
}

.essay {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 24px;
  padding: 16px 0;
  border-bottom: 1px solid var(--ink);
}

.essay:first-child { border-top: 1px solid var(--ink); }
.essay .date { font-size: 12px; opacity: 0.7; }

.essay h3,
.project h3 {
  font-family: "IBM Plex Mono", monospace;
  font-weight: 500;
  font-size: 15px;
  margin: 0 0 6px;
  line-height: 1.4;
}

.essay h3 a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.essay p,
.project p,
.note p {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  max-width: 62ch;
  text-wrap: pretty;
}

.notes {
  display: grid;
  gap: 0;
}

.note {
  padding: 14px 0;
  border-bottom: 1px solid var(--ink);
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 20px;
}

.note[hidden] { display: none; }

.notes .note:first-child { border-top: 1px solid var(--ink); }
.note .num { font-size: 12px; opacity: 0.6; }

.note h4 {
  margin: 0 0 4px;
  font-size: 14px;
  font-weight: 500;
}

.notes-nav {
  margin-top: 14px;
  padding-top: 12px;
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.notes-nav a,
.notes-nav button {
  color: var(--ink);
  text-decoration: none;
}

.notes-nav button {
  border: 0;
  padding: 0;
  background: transparent;
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  cursor: pointer;
}

.notes-nav a:hover,
.notes-nav button:hover { text-decoration: underline; }
.notes-nav .disabled { opacity: 0.35; pointer-events: none; }

.project {
  padding: 14px 0;
  border-bottom: 1px solid var(--ink);
  display: grid;
  grid-template-columns: 1fr 110px;
  gap: 20px;
  align-items: baseline;
}

.projects .project:first-child { border-top: 1px solid var(--ink); }

.project h3 {
  margin: 0 0 4px;
}

.project .right {
  font-size: 11px;
  text-align: right;
  opacity: 0.7;
}

.stack-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 24px;
  padding: 14px 0;
  border-bottom: 1px solid var(--ink);
}

.stack .stack-row:first-child { border-top: 1px solid var(--ink); }

.stack-row h3 {
  font-family: "IBM Plex Mono", monospace;
  font-weight: 500;
  font-size: 14px;
  margin: 0;
  line-height: 1.4;
}

.stack-row ul {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 13px;
  line-height: 1.7;
}

.stack-row li { padding-left: 14px; }

.contact ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.contact li {
  display: grid;
  grid-template-columns: 80px 1fr;
  padding: 8px 0;
  border-bottom: 1px solid var(--ink);
  font-size: 13px;
}

.contact li:first-child { border-top: 1px solid var(--ink); }

.contact li b {
  font-weight: 500;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.06em;
  opacity: 0.7;
}

.meta-grid {
  display: grid;
  grid-template-columns: 120px 1fr;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  font-size: 12px;
}

.meta-grid dt {
  padding: 8px 0;
  border-bottom: 1px solid var(--ink);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 10px;
  font-weight: 500;
  opacity: 0.7;
  align-self: center;
}

.meta-grid dd {
  padding: 8px 0;
  border-bottom: 1px solid var(--ink);
  margin: 0;
}

.meta-grid dt:last-of-type,
.meta-grid dd:last-of-type { border-bottom: 0; }

.meta-date {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.7;
}

.toc {
  margin: 36px 0;
  padding: 14px 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.toc .label {
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 500;
  opacity: 0.7;
  margin-bottom: 8px;
}

.toc ul {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 13px;
}

.toc li { padding: 3px 0; }

.toc a {
  text-decoration: none;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 1px;
}

.diagram {
  margin: 28px 0;
  max-width: 100%;
}

.diagram-open {
  display: block;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: zoom-in;
}

.diagram img {
  display: block;
  width: min(100%, 900px);
  height: auto;
  border: 1px solid var(--ink);
  background: #08090f;
}

.diagram-open:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 4px;
}

.diagram figcaption {
  margin-top: 8px;
  max-width: 62ch;
  font-size: 11px;
  line-height: 1.5;
  opacity: 0.7;
}

body.lightbox-active {
  overflow: hidden;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 28px;
  background: rgba(0, 0, 0, 0.88);
}

.lightbox[hidden] {
  display: none;
}

.lightbox img {
  display: block;
  width: auto;
  max-width: min(1200px, 96vw);
  max-height: 88vh;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: #08090f;
}

.lightbox-close {
  position: fixed;
  top: 18px;
  right: 22px;
  padding: 6px 8px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  color: #fff;
  background: rgba(0, 0, 0, 0.35);
  font: inherit;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}

.lightbox-close:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
}

.colophon {
  margin-top: 80px;
  padding-top: 12px;
  border-top: 1px solid var(--ink);
  font-size: 11px;
  opacity: 0.6;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

@media (max-width: 640px) {
  main { padding: 36px 20px 80px; }
  .paper-row { grid-template-columns: 50px 1fr; }
  .paper-row .venue {
    grid-column: 2;
    text-align: left;
  }
  .essay {
    grid-template-columns: 1fr;
    gap: 4px;
  }
  .project { grid-template-columns: 1fr; }
  .project .right { text-align: left; }
  .stack-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .card-item {
    grid-template-columns: 50px 1fr auto;
    column-gap: 12px;
  }
  .card-item .desc { grid-column: 1 / -1; }
  .card-item .meta { grid-column: 1 / span 2; }
  .meta-grid { grid-template-columns: 100px 1fr; }
  .nav .crumbs { gap: 12px; }
}