/* Atelier: quiet typography, cobalt accents, and responsive static layouts. */
:root {
  --blue:#1745dc;
  --ink:#1b2029;
  --muted:#545d6e;
  --border:#cbd0d9;
  --surface:#f0f2f6;
  --panel:#fff;
  --accent:var(--blue);
  --teal:#1745dc;
  --good:#217047;
  --danger:#b62b32;
  --warning:#946000;
  --warn-ink:#775000;
  --mint-fill:#eef2ff;
  --mint-fill-2:#e5ebff;
  --border-teal:#8398de;
  --border-soft:#ccd2dd;
  --wash:#f0f2f6;
}
* {
  box-sizing:border-box;
}
html {
  background:#fafbfc;
}
body {
  margin:0;
  color:var(--ink);
  font-family:Arial,Helvetica,system-ui,sans-serif;
  font-size:17px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a {
  color:inherit;
  text-decoration-thickness:1px;
  text-underline-offset:5px;
}
a:hover {
  color:var(--blue);
}
a:focus-visible,input:focus-visible,[tabindex]:focus-visible {
  outline:3px solid var(--blue);
  outline-offset:5px;
}
p,h1,h2,h3 {
  margin-top:0;
}
h1,h2,h3 {
  line-height:1.08;
  letter-spacing:-.045em;
}
h1 {
  font-weight:500;
}
h2 {
  font-weight:500;
}
img,svg {
  max-width:100%;
}
main,.site-nav,.footer,.article-hero {
  width:min(1280px,calc(100% - 112px));
  margin-inline:auto;
}
.site-nav {
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:30px;
  border-bottom:1px solid var(--border);
  padding:26px 0;
}
.site-nav a {
  text-decoration:none;
  display:inline-flex;
  align-items:center;
  min-height:44px;
}
.brand {
  font-weight:700;
  font-size:21px;
  letter-spacing:-.04em;
}
.brand-dot {
  color:var(--blue);
  font-size:12px;
  margin-left:10px;
}
.site-nav nav {
  display:flex;
  gap:32px;
  font-size:14px;
}
.site-nav [aria-current] {
  color:var(--blue);
  text-decoration:underline;
}
.skip-link {
  position:absolute;
  left:20px;
  top:-100px;
  background:white;
  padding:12px;
  z-index:10;
}
.skip-link:focus {
  top:12px;
}
.eyebrow,.article-kicker {
  text-transform:uppercase;
  letter-spacing:.09em;
  font-size:12px;
  font-weight:700;
}
.hero {
  padding:66px 0 68px;
}
.hero h1 {
  font-size:clamp(72px,9.4vw,138px);
  line-height:.93;
  letter-spacing:-.075em;
  margin:42px 0 44px;
}
.blue {
  color:var(--blue);
}
.hero-bottom {
  display:grid;
  grid-template-columns:1fr 1.15fr;
  gap:40px;
  align-items:start;
}
.hero-location {
  font-size:13px;
  color:var(--muted);
  padding-top:8px;
}
.intro {
  font-size:25px;
  line-height:1.45;
  letter-spacing:-.025em;
  max-width:560px;
  margin-bottom:25px;
}
.text-link {
  display:inline-flex;
  gap:60px;
  color:var(--blue);
  min-height:44px;
  align-items:center;
  font-size:15px;
}
.writing {
  display:grid;
  grid-template-columns:1fr 2.15fr;
  gap:60px;
  padding:42px 0 78px;
  border-top:2px solid var(--ink);
}
.section-intro h2 {
  font-size:24px;
  letter-spacing:-.03em;
}
.section-intro p,.section-intro a {
  font-size:14px;
  color:var(--muted);
}
.section-intro a {
  display:inline-flex;
  min-height:44px;
  align-items:center;
  color:var(--blue);
}
.entry {
  display:grid;
  grid-template-columns:30px 1fr;
  column-gap:18px;
  padding:28px 0 32px;
  border-bottom:1px solid var(--border);
  text-decoration:none;
}
.entry:first-child {
  padding-top:0;
}
.entry[hidden] {
  display:none;
}
.number {
  font-size:12px;
  color:var(--blue);
  padding-top:3px;
}
.entry-meta {
  font-size:11px;
  color:var(--muted);
  line-height:1.8;
  display:flex;
  gap:6px 12px;
  flex-wrap:wrap;
  margin-bottom:14px;
}
.entry-tag {
  color:var(--blue);
}
.entry h2 {
  font-size:31px;
  line-height:1.12;
  margin-bottom:15px;
}
.entry p:not(.entry-meta) {
  font-size:15px;
  color:var(--muted);
  line-height:1.6;
  margin-bottom:16px;
  max-width:670px;
}
.read-link {
  grid-column:2;
  font-size:12px;
  color:var(--blue);
}
.read-link:after {
  content:' ↗';
}
.practice {
  display:grid;
  grid-template-columns:1fr 2.15fr;
  gap:60px;
  border-top:1px solid var(--border);
  padding:45px 0 80px;
}
.practice h2 {
  font-size:clamp(32px,4vw,58px);
  line-height:1.07;
  margin-bottom:30px;
}
.tracks {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:4px 25px;
}
.tracks a {
  font-size:14px;
  min-height:48px;
  display:flex;
  align-items:center;
  border-bottom:1px solid var(--border);
  text-decoration:none;
}
.footer {
  border-top:2px solid var(--ink);
  display:flex;
  justify-content:space-between;
  gap:30px;
  padding:35px 0 55px;
  font-size:13px;
}
.footer p {
  margin:0;
}
.footer span {
  color:var(--muted);
}
.footer div {
  display:flex;
  gap:24px;
}
.footer a {
  min-height:44px;
}
.archive-head {
  padding:65px 0 55px;
  max-width:770px;
}
.archive-head h1 {
  font-size:clamp(66px,10vw,120px);
  margin:20px 0 25px;
  letter-spacing:-.075em;
}
.archive-head>p:last-child {
  font-size:22px;
  max-width:590px;
}
.archive {
  display:grid;
  grid-template-columns:1fr 2.15fr;
  gap:60px;
  border-top:2px solid var(--ink);
  padding:35px 0 65px;
}
.search-row label {
  display:block;
  font-size:14px;
  margin-bottom:12px;
}
.search-row input {
  font:inherit;
  font-size:14px;
  width:100%;
  padding:14px;
  border:1px solid #9ba4b5;
  background:white;
  border-radius:0;
  min-height:48px;
}
.search-row span {
  font-size:12px;
  color:var(--muted);
  display:block;
  margin-top:12px;
}
.section-block {
  border-top:1px solid var(--border);
  padding:30px 0 60px;
}
.section-label {
  font-size:12px;
  text-transform:uppercase;
  letter-spacing:.08em;
}
.roadmap-list {
  list-style:none;
  padding:0;
  margin:0 0 0 34%;
}
.roadmap-list li {
  display:grid;
  grid-template-columns:110px 1fr;
  gap:20px;
  padding:20px 0;
  border-bottom:1px solid var(--border);
  font-size:15px;
}
.when {
  color:var(--blue);
  font-size:12px;
}
.roadmap-list p {
  margin:0;
}
.article-hero {
  padding:60px 0 45px;
  max-width:940px;
}
.article-title {
  font-size:clamp(48px,6.6vw,88px);
  max-width:800px;
  margin:24px 0;
  letter-spacing:-.06em;
}
.article-subtitle {
  font-size:22px;
  line-height:1.5;
  max-width:780px;
}
.article-byline {
  font-size:13px;
  color:var(--muted);
  margin-top:28px;
}
.article {
  max-width:760px;
  font-size:18px;
  line-height:1.8;
  padding-bottom:60px;
}
.article>section {
  margin-bottom:56px;
}
.article h2 {
  font-size:31px;
  line-height:1.22;
  margin:0 0 22px;
}
.article h3 {
  font-size:21px;
  line-height:1.3;
}
.article p {
  margin-bottom:22px;
}
.article a {
  color:var(--blue);
}
.article ul,.article ol {
  padding-left:25px;
}
.article li {
  margin-bottom:10px;
}
.section-head {
  border-top:1px solid var(--border);
  padding-top:28px;
}
.section-head>p {
  color:var(--muted);
}
.note {
  font-size:13px;
  line-height:1.7;
  padding:20px 24px;
  background:var(--surface);
  border-left:3px solid var(--blue);
}
.callout {
  font-size:19px;
}
.paper-fig {
  margin:30px 0;
}
.diagram-scroll {
  overflow-x:auto;
  border:1px solid var(--border);
  padding:12px;
  background:white;
}
.diagram-scroll svg {
  display:block;
  width:100%;
  min-width:680px;
  max-width:none;
  height:auto;
}
.figcap {
  font-size:13px;
  color:var(--muted);
  line-height:1.6;
  margin-top:12px;
}
.figcap strong {
  color:var(--blue);
}
.grid-2,.grid-3,.grid-4,.sources {
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
  margin:28px 0;
}
.card {
  padding:20px;
  background:var(--surface);
  font-size:15px;
  line-height:1.65;
}
.card p:last-child {
  margin-bottom:0;
}
.scorecard {
  overflow-x:auto;
  margin:28px 0;
}
table {
  border-collapse:collapse;
  font-size:14px;
  line-height:1.6;
  width:100%;
  min-width:540px;
}
th,td {
  text-align:left;
  padding:14px;
  border:1px solid var(--border);
  vertical-align:top;
}
th {
  background:var(--surface);
}
pre {
  overflow-x:auto;
  background:var(--surface);
  padding:20px;
  font-size:13px;
}
code {
  font-family:ui-monospace,monospace;
  font-size:.85em;
  overflow-wrap:anywhere;
}
.blueprint-row {
  border-bottom:1px solid var(--border);
  padding:20px 0;
}
.blueprint-row p {
  margin:10px 0 0;
}
.explore-grid {
  display:grid;
  gap:20px;
}
.hub-card {
  display:block;
  border-bottom:1px solid var(--border);
  padding:20px 0;
  text-decoration:none;
}
.article .hub-card h2 {
  font-size:23px;
  margin-bottom:12px;
}
.hub-card p {
  color:var(--muted);
  font-size:15px;
}
@media(max-width:800px) {
  main,.site-nav,.footer,.article-hero {
    width:calc(100% - 48px);
  }
  .site-nav {
    align-items:flex-start;
    gap:10px;
    flex-direction:column;
    padding:18px 0;
  }
  .site-nav nav {
    gap:24px;
  }
  .hero {
    padding:42px 0;
  }
  .hero h1 {
    margin:30px 0 35px;
  }
  .hero-bottom {
    grid-template-columns:1fr 2fr;
    gap:25px;
  }
  .intro {
    font-size:22px;
  }
  .writing,.practice,.archive {
    grid-template-columns:1fr;
    gap:28px;
  }
  .section-intro p {
    display:none;
  }
  .section-intro {
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:10px;
  }
  .section-intro h2 {
    margin:0;
  }
  .practice {
    padding-bottom:50px;
  }
  .practice h2 {
    font-size:46px;
  }
  .roadmap-list {
    margin:0;
  }
  .footer {
    flex-wrap:wrap;
  }
  .footer div {
    gap:20px;
  }
  .article-hero {
    padding-top:40px;
  }
  .article-subtitle {
    font-size:20px;
  }
  .archive-head {
    padding:40px 0 25px;
  }
  .search-row {
    max-width:440px;
  }
  .article {
    font-size:17px;
  }
}
@media(max-width:480px) {
  main,.site-nav,.footer,.article-hero {
    width:calc(100% - 36px);
  }
  .site-nav nav {
    gap:19px;
    font-size:12px;
  }
  .hero .eyebrow {
    font-size:10px;
  }
  .hero h1 {
    font-size:70px;
  }
  .hero-bottom {
    grid-template-columns:1fr;
    gap:8px;
  }
  .hero-location {
    margin-bottom:14px;
    font-size:11px;
  }
  .intro {
    font-size:22px;
  }
  .entry {
    grid-template-columns:22px 1fr;
    gap:10px;
  }
  .entry h2 {
    font-size:26px;
  }
  .entry-meta {
    font-size:10px;
  }
  .entry p:not(.entry-meta) {
    font-size:14px;
  }
  .entry .read-link {
    font-size:12px;
  }
  .writing {
    padding-bottom:45px;
  }
  .practice h2 {
    font-size:37px;
  }
  .tracks {
    grid-template-columns:1fr;
  }
  .footer {
    font-size:12px;
    gap:22px;
  }
  .footer div {
    flex-wrap:wrap;
    gap:18px;
  }
  .footer>p:last-child {
    width:100%;
  }
  .archive-head>p:last-child {
    font-size:19px;
  }
  .roadmap-list li {
    grid-template-columns:1fr;
    gap:8px;
  }
  .article-title {
    font-size:47px;
  }
  .article-subtitle {
    font-size:19px;
  }
  .article h2 {
    font-size:27px;
  }
  .grid-2,.grid-3,.grid-4,.sources {
    grid-template-columns:1fr;
  }
  .note {
    padding:16px;
  }
  .article>section {
    margin-bottom:42px;
  }
  .diagram-scroll {
    padding:6px;
  }
}

/* Shared palette for the existing research figures and content components. */
:root {
  color-scheme: light;
  --paper: #fafbfc;
  --line: var(--border);
  --link: var(--blue);
  --talk: var(--blue);
  --mint-0: #f0f2f6;
  --mint-1: #e9eefc;
  --mint-2: #b6c5ee;
  --ramp-0: #1745dc;
  --slate-1: #545d6e;
  --slate-2: #1b2029;
  --tag-ink: #1745dc;
  --warn-bg: #fff2d9;
  --path-danger: #9c3540;
  --header-bg: #fafbfc;
  --wash-strong: #e5ebff;
  --border-soft-2: var(--border);
  --border-soft-3: var(--border);
  --border-soft-4: var(--border);
  --border-teal-hover: #1745dc;
  --mint-fill-3: #e9eefc;
  --mint-fill-4: #f3f5fa;
  --mint-chip: #e9eefc;
  --on-strong: #fff;
  --on-teal: #fff;
  --font-display: Arial, Helvetica, system-ui, sans-serif;
}

::selection {
  background: var(--blue);
  color: #fff;
}

/* Catalogues and track indexes share the same page grid as the homepage. */
.site-shell,
.site-footer {
  width: min(1280px, calc(100% - 112px));
  margin-inline: auto;
}

.site-shell > main {
  width: 100%;
}

.page-head {
  padding: 65px 0 48px;
  max-width: 900px;
}

.page-head h1 {
  font-size: clamp(48px, 6.5vw, 88px);
  letter-spacing: -.065em;
  margin: 20px 0 25px;
  overflow-wrap: break-word;
}

.page-head > p:last-child {
  max-width: 720px;
  font-size: 21px;
  color: var(--muted);
}

.section-main {
  padding-bottom: 55px;
}

.section-main .section-block {
  margin: 0;
  padding: 35px 0 55px;
}

.section-main .entry:not(:has(.number)) {
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: start;
}

.section-main .entry:not(:has(.number)) .read-link {
  grid-column: 2;
  align-self: center;
}

.entry > div,
.card-grid > *,
.compact-row > *,
.scenario > *,
.blueprint > * {
  min-width: 0;
}

.entry-meta .tag {
  text-transform: none;
}

.article-date {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 12px;
}

.tag,
.chip {
  display: inline-flex;
  padding: 4px 9px;
  color: var(--blue);
  background: var(--mint-1);
  font-size: 12px;
  line-height: 1.5;
}

.tag.warn {
  color: var(--warn-ink);
  background: var(--warn-bg);
}

.talk-recording {
  font-size: 13px;
  color: var(--muted);
  margin: 0 0 22px;
  padding: 12px 18px;
  background: var(--surface);
}

.inline-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 25px;
  font-size: 14px;
  margin-top: 28px;
}

.inline-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--blue);
}

.roadmap > h2 {
  font-size: 25px;
}

.roadmap > p,
.empty-note {
  color: var(--muted);
}

.empty-note {
  padding: 24px;
  background: var(--surface);
}

.empty-note strong {
  display: block;
  color: var(--ink);
  margin-bottom: 8px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.work-card {
  display: flex;
  flex-direction: column;
  gap: 15px;
  text-decoration: none;
  padding: 28px;
  border-top: 2px solid var(--ink);
  background: var(--surface);
}

.work-card:hover {
  border-color: var(--blue);
}

.work-card h2 {
  margin-bottom: 0;
  font-size: 26px;
  overflow-wrap: anywhere;
}

.work-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.card-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}

.compact-list {
  display: grid;
}

.compact-row {
  display: grid;
  grid-template-columns: minmax(180px, .6fr) minmax(0, 1fr);
  gap: 24px;
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
  font-size: 15px;
}

.compact-row a {
  color: var(--blue);
  overflow-wrap: anywhere;
}

.compact-row span {
  color: var(--muted);
}

/* Long-form pages retained from the original site. */
.article-header {
  width: min(940px, calc(100% - 112px));
  margin-inline: auto;
  padding: 60px 0 45px;
}

.article-wide {
  width: min(1040px, calc(100vw - 112px));
  margin-left: calc((100% - min(1040px, 100vw - 112px)) / 2);
}

.article .definition,
.article .timeline,
.article .comparison,
.article .failure-grid,
.article .scenario,
.article .blueprint {
  display: grid;
  gap: 20px;
  margin-top: 28px;
  margin-bottom: 28px;
}

.definition,
.timeline {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.comparison {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.failure-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.scenario,
.blueprint {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.panel {
  background: var(--surface);
  padding: 24px;
  min-width: 0;
}

.ticket-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 20px 0;
}

.meta {
  padding: 12px;
  background: var(--panel);
  font-size: 14px;
}

.meta span,
.meta strong {
  display: block;
}

.meta span {
  color: var(--muted);
  font-size: 12px;
}

.artifact {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  align-items: center;
  gap: 15px;
  padding: 15px;
  border: 1px solid var(--border);
  font-size: 14px;
}

.thumb {
  display: grid;
  place-items: center;
  height: 54px;
  color: #fff;
  background: var(--blue);
}

.path {
  padding: 0;
  display: flex;
  flex-direction: column;
}

.path-head {
  padding: 22px;
  background: var(--slate-1);
  color: #fff;
}

.path-head.no-km {
  background: var(--path-danger);
}

.path-head.km {
  background: var(--blue);
}

.path-head h3,
.path-head p {
  margin-bottom: 8px;
}

.path-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 18px;
  padding: 22px;
}

.output {
  padding-left: 14px;
  border-left: 2px solid var(--border-teal);
}

.output strong,
.risk strong {
  display: block;
  margin-bottom: 8px;
}

.risk {
  margin-top: auto;
  padding: 15px;
  background: var(--mint-fill);
}

.failure .num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin-bottom: 15px;
  background: var(--blue);
  color: #fff;
  font-size: 14px;
}

.step {
  border-top: 3px solid var(--blue);
}

.step > span {
  display: block;
  margin-bottom: 12px;
  color: var(--blue);
  font-weight: bold;
}

.mark {
  display: inline-flex;
  padding: 4px 10px;
  color: #fff;
  font-size: 12px;
  line-height: 1.5;
}

.mark.low {
  background: var(--danger);
}

.mark.mid {
  background: var(--warning);
}

.mark.high {
  background: var(--good);
}

/* Shared legacy footer, using the same restrained rules as the Atelier footer. */
.site-footer {
  border-top: 2px solid var(--ink);
  margin-top: 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding: 35px 0 25px;
}

.footer-grid h2 {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -.02em;
}

.footer-grid p {
  max-width: 350px;
  font-size: 14px;
  color: var(--muted);
}

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

.footer-grid a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 14px;
}

.footer-base {
  border-top: 1px solid var(--border);
  padding: 20px 0 35px;
  color: var(--muted);
  font-size: 12px;
}

.footer-base p {
  margin: 0;
}

@media (max-width: 1050px) {
  .definition,
  .timeline,
  .failure-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .comparison {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 800px) {
  .site-shell,
  .site-footer,
  .article-header {
    width: calc(100% - 48px);
  }

  .article-wide {
    width: 100%;
    margin-left: 0;
  }

  .article-header {
    padding-top: 40px;
  }

  .page-head {
    padding: 40px 0 30px;
  }

  .page-head > p:last-child {
    font-size: 19px;
  }

  .scenario,
  .blueprint,
  .card-grid {
    grid-template-columns: 1fr;
  }

  .section-main .entry:not(:has(.number)) {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .section-main .entry:not(:has(.number)) .read-link {
    grid-column: 1;
    justify-self: start;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 25px;
  }

  .footer-grid > div:first-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 480px) {
  .site-shell,
  .site-footer,
  .article-header {
    width: calc(100% - 36px);
  }

  .page-head h1 {
    font-size: 46px;
  }

  .definition,
  .timeline,
  .failure-grid,
  .meta-grid,
  .compact-row {
    grid-template-columns: 1fr;
  }

  .compact-row {
    gap: 8px;
  }

  .panel,
  .work-card {
    padding: 20px;
  }

  .work-card h2 {
    font-size: 24px;
  }

  .artifact {
    grid-template-columns: 1fr;
  }

  .thumb {
    width: 64px;
  }

  .footer-grid {
    gap: 20px;
  }
}

/* Six profile links fit naturally without widening the footer on phones. */
.footer .footer-socials {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  max-width: 520px;
  min-width: 0;
}

.footer .footer-socials a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

/* Research sequences may contain four or five steps; fit the actual content. */
.article .timeline {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 180px), 1fr));
}