/* Field notebook: warm paper, ink, quiet rules, generous reading space. */
@font-face {
  font-family:'Noto Sans';
  src:url('assets/fonts/NotoSans.woff2') format('woff2');
  font-style:normal;
  font-weight:100 900;
  font-display:swap;
}
@font-face {
  font-family:'Noto Serif';
  src:url('assets/fonts/NotoSerif.woff2') format('woff2');
  font-style:normal;
  font-weight:100 900;
  font-display:swap;
}
.article-content .abstract h2 {
  font:.72rem var(--mono);
  text-transform:uppercase;
  letter-spacing:.08em;
  color:var(--accent);
}
.case-content,.case-toc,.case-facts>div {
  min-width:0;
}
.case-facts strong {
  overflow-wrap:anywhere;
}
:root {
  color-scheme:light;
  --paper:#f8f7f3;
  --ink:#222722;
  --muted:#60665e;
  --line:#d9dcd2;
  --accent:#405d47;
  --wash:#eeefe8;
  --serif:'Noto Serif',Georgia,serif;
  --sans:'Noto Sans','Segoe UI',Arial,sans-serif;
  --mono:'SFMono-Regular',Consolas,monospace;
}
* {
  box-sizing:border-box;
}
body {
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font:16px/1.7 var(--sans);
  -webkit-font-smoothing:antialiased;
}
a {
  color:inherit;
  text-underline-offset:5px;
  text-decoration-thickness:1px;
}
a:hover {
  color:var(--accent);
}
:focus-visible {
  outline:2px solid var(--accent);
  outline-offset:5px;
}
::selection {
  background:#d9e2d3;
}
h1,h2,h3,p,figure {
  margin:0;
}
h1,h2,h3 {
  font-weight:400;
  line-height:1.15;
}
h1 {
  font:400 clamp(2.7rem,5.2vw,4.65rem)/1.08 var(--serif);
  letter-spacing:-.045em;
  text-wrap:balance;
  overflow-wrap:normal;
  word-break:normal;
}
[lang="vi"] h1,
[lang="vi"] h2,
[lang="vi"] h3 {
  letter-spacing:-.015em;
  line-height:1.3;
  word-break:normal;
  overflow-wrap:normal;
  hyphens:none;
}
h2 {
  font:400 clamp(1.8rem,3vw,2.5rem)/1.2 var(--serif);
  letter-spacing:-.025em;
}
h3 {
  font:400 1.5rem/1.3 var(--serif);
  letter-spacing:-.015em;
}
p {
  margin-block:0 1.2em;
}
p:last-child {
  margin-bottom:0;
}
img,svg {
  max-width:100%;
  height:auto;
}
button,input {
  font:inherit;
}
button {
  cursor:pointer;
}
button,a {
  -webkit-tap-highlight-color:transparent;
}
[hidden] {
  display:none!important;
}
code {
  font:.88em var(--mono);
  overflow-wrap:anywhere;
}
pre {
  position:relative;
  padding:22px;
  background:var(--wash);
  border:1px solid var(--line);
  overflow:auto;
  font:.82rem/1.8 var(--mono);
}
pre code {
  font:inherit;
  overflow-wrap:normal;
}
ul,ol {
  padding-left:1.3em;
}
li {
  padding-left:.2em;
  margin-bottom:.65em;
}
strong {
  font-weight:600;
}
table {
  width:100%;
  border-collapse:collapse;
  text-align:left;
  font-size:.9rem;
}
th,td {
  padding:14px 15px;
  border-bottom:1px solid var(--line);
  vertical-align:top;
}
th {
  font-weight:600;
  background:var(--wash);
}
figcaption {
  margin-top:12px;
  font-size:.82rem;
  line-height:1.65;
  color:var(--muted);
}
.shell {
  width:min(1120px,calc(100% - 96px));
  margin-inline:auto;
}
.site-header {
  border-bottom:1px solid var(--line);
}
.nav-wrap {
  min-height:108px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:28px;
}
.brand {
  display:flex;
  align-items:center;
  gap:15px;
  text-decoration:none;
  font-weight:600;
  font-size:.87rem;
  white-space:nowrap;
}
.brand-mark {
  font:italic 2.15rem var(--serif);
  letter-spacing:-.12em;
  border-right:1px solid var(--line);
  padding-right:21px;
}
.brand small {
  display:block;
  font:400 .68rem var(--mono);
  color:var(--muted);
  margin-top:4px;
}
.primary-nav {
  display:flex;
  gap:26px;
  align-items:center;
}
.primary-nav a {
  position:relative;
  padding:9px 0;
  text-decoration:none;
  font-size:.84rem;
}
.primary-nav a[aria-current]::after {
  content:'';
  position:absolute;
  bottom:0;
  left:0;
  right:0;
  height:2px;
  background:var(--accent);
}
.article-figure {margin:32px 0}
.article-figure>p {margin:0}
.copy-code {
  float:right;
  margin:-10px -10px 8px 14px;
  border:1px solid var(--line);
  background:var(--paper);
  color:var(--muted);
  padding:5px 9px;
  font:.68rem var(--mono);
}
.proof-block,.latest-writing,.related-posts {
  padding:48px 0;
  border-bottom:1px solid var(--line);
}
.proof-grid {
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
  border-left:1px solid var(--line);
}
.proof-grid>div {
  min-height:145px;
  padding:23px;
  border-right:1px solid var(--line);
  border-bottom:1px solid var(--line);
  display:flex;
  flex-direction:column;
  justify-content:space-between;
}
.proof-grid strong {font:400 1.7rem var(--serif)}
.proof-grid span {color:var(--muted);font-size:.82rem}
.research-filters {
  display:grid;
  grid-template-columns:minmax(220px,2fr) repeat(4,1fr) auto;
  gap:12px;
  align-items:end;
  padding:20px;
  margin-bottom:28px;
  border:1px solid var(--line);
}
.research-filters label {display:grid;gap:7px;font:.7rem var(--mono);text-transform:uppercase;letter-spacing:.05em}
.research-filters input,.research-filters select {min-height:44px;padding:8px 10px;border:1px solid var(--line);background:white;color:var(--ink)}
.research-results {border-top:1px solid var(--line)}
.pagination {display:flex;justify-content:center;gap:30px;align-items:center;padding:30px 0;font-size:.82rem}
.tag-list {display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 35px}
.tag-list a {border:1px solid var(--line);padding:5px 9px;text-decoration:none;font:.68rem var(--mono)}
.article-summary {font-size:1.08rem;color:var(--muted);border-left:2px solid var(--accent);padding-left:18px}
.related-posts {margin-top:60px}
.loading-note {color:var(--muted)}
.primary-nav .language-switch {
  min-width: 34px;
  padding: 7px 9px;
  border: 1px solid var(--line);
  text-align: center;
  font: 0.68rem var(--mono);
  letter-spacing: 0.06em;
}
.primary-nav .language-switch::after {
  display: none;
}
.menu-toggle {
  display:none;
}
main {
  min-height:55vh;
}
.page-head {
  padding:76px 0 52px;
  max-width:850px;
}
.page-head .intro {
  margin-top:24px;
  max-width:670px;
}
.page-section {
  padding-bottom:80px;
}
.home-hero {
  display:grid;
  grid-template-columns:1fr 245px;
  column-gap:100px;
  padding:86px 0 72px;
}
.home-hero h1 {
  max-width:720px;
}
.home-hero .intro {
  max-width:610px;
  margin-top:28px;
}
.margin-note {
  border-left:1px solid var(--line);
  padding-left:27px;
  align-self:end;
  font-size:.87rem;
}
.margin-note dl {
  margin:24px 0 0;
}
.margin-note dt {
  font:.64rem var(--mono);
  color:var(--muted);
  text-transform:uppercase;
  letter-spacing:.08em;
  margin-top:20px;
}
.margin-note dd {
  margin:7px 0 0;
  line-height:1.6;
}
.home-work {
  padding-block:38px 65px;
  border-top:1px solid var(--line);
}
.section-top {
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  gap:20px;
  margin-bottom:29px;
}
.section-top h2 {
  font-size:1.9rem;
}
.home-research {
  border-top:1px solid var(--line);
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:70px;
  padding:52px 0 80px;
}
.home-research h2 {
  max-width:430px;
  margin-bottom:20px;
}
.home-research .intro {
  font-size:1rem;
}
.about-layout {
  display:grid;
  grid-template-columns:minmax(0,2fr) minmax(200px,1fr);
  gap:90px;
}
.about-layout h2 {
  margin:35px 0 20px;
}
.about-layout aside {
  border-top:1px solid var(--line);
  padding-top:20px;
}
.site-footer {
  border-top:1px solid var(--line);
  padding-block:35px 30px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
  font-size:.76rem;
  color:var(--muted);
}
.footer-name {
  color:var(--ink);
  text-decoration:none;
  font-weight:600;
  font-size:.87rem;
}
.site-footer p {
  margin:5px 0 0;
}
.site-footer nav {
  display:flex;
  flex-wrap:wrap;
  gap:13px 22px;
  justify-content:flex-end;
  align-self:start;
}
.site-footer nav a {
  text-decoration:none;
}
.colophon {
  grid-column:1/-1;
  font-size:.68rem;
  line-height:1.8;
}
.eyebrow,.section-index,.case-label,.article-kicker {
  font:.67rem/1.6 var(--mono);
  text-transform:uppercase;
  letter-spacing:.1em;
  color:var(--accent);
  margin-bottom:23px;
}
.intro,.lead {
  font-size:1.1rem;
  line-height:1.85;
  color:var(--muted);
}
.hero-links {
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:26px;
  margin-top:31px;
  font-size:.87rem;
}
.button {
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:11px 20px;
  border:1px solid var(--line);
  text-decoration:none;
  font-size:.86rem;
  background:transparent;
  color:var(--ink);
}
.button-primary {
  background:var(--ink);
  border-color:var(--ink);
  color:var(--paper);
}
.button-primary:hover {
  background:var(--accent);
  color:var(--paper);
}
.text-link {
  font-size:.87rem;
}
.work-row {
  display:grid;
  grid-template-columns:52px minmax(0,1fr) 190px 24px;
  gap:20px;
  padding:27px 0;
  border-top:1px solid var(--line);
  text-decoration:none;
  align-items:center;
}
.work-row:last-child {
  border-bottom:1px solid var(--line);
}
.work-row .number {
  font:.72rem var(--mono);
  color:var(--muted);
  align-self:start;
  padding-top:8px;
}
.work-row h3 {
  font-size:1.45rem;
  margin-bottom:8px;
}
.work-row p {
  font-size:.88rem;
  color:var(--muted);
  max-width:620px;
  margin:0;
}
.work-meta {
  color:var(--muted);
  font:.69rem/1.9 var(--mono);
}
.work-row:hover h3,.research-card:hover h2 {
  text-decoration:underline;
  text-underline-offset:5px;
}
.arrow {
  justify-self:end;
  font-size:1.25rem;
}
.note {
  padding:21px 24px;
  background:var(--wash);
  border-left:2px solid var(--accent);
  font-size:.88rem;
  color:var(--muted);
}
.note strong {
  color:var(--ink);
}
.project-extra {
  margin-top:38px;
  max-width:740px;
}
.project-extra h3 {
  margin-bottom:13px;
}
.research-card {
  display:grid;
  grid-template-columns:275px 1fr;
  gap:38px;
  align-items:center;
  padding:35px 0;
  border-top:1px solid var(--line);
  text-decoration:none;
}
.research-card .article-kicker {
  margin-bottom:12px;
}
.research-card h2 {
  font-size:1.9rem;
  margin-bottom:14px;
}
.research-card p {
  color:var(--muted);
  font-size:.93rem;
}
.research-card img {
  width:100%;
  border:1px solid var(--line);
}
.research-card small {
  color:var(--muted);
  font:.67rem var(--mono);
}
.filter-bar {
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  padding-block:0 25px;
}
.filter-bar button {
  background:transparent;
  padding:7px 16px;
  border:1px solid var(--line);
  font-size:.81rem;
}
.filter-bar button[aria-pressed=true] {
  color:var(--paper);
  background:var(--ink);
  border-color:var(--ink);
}
.credential {
  display:grid;
  grid-template-columns:170px 1fr;
  gap:36px;
  border-top:1px solid var(--line);
  padding:32px 0;
}
.credential h2 {
  font-size:1.65rem;
  margin-bottom:13px;
}
.credential p {
  color:var(--muted);
  font-size:.94rem;
}
.credential time,.credential .record-type {
  font:.72rem/1.8 var(--mono);
  color:var(--muted);
}
.record-status {
  margin-top:15px;
  font-size:.82rem!important;
}
.contact-layout {
  display:grid;
  grid-template-columns:1.3fr 1fr;
  gap:80px;
}
.contact-email {
  display:block;
  font:clamp(1.15rem,2.8vw,2rem) var(--serif);
  margin:20px 0;
  overflow-wrap:anywhere;
}
.copy-button {
  background:none;
  border:1px solid var(--line);
  padding:8px 15px;
  font-size:.81rem;
}
.social-list {
  display:grid;
}
.social-list a {
  padding:16px 0;
  border-bottom:1px solid var(--line);
  text-decoration:none;
  display:flex;
  justify-content:space-between;
}
.skip-link {
  position:fixed;
  z-index:10;
  left:12px;
  top:-100px;
  background:var(--ink);
  color:white;
  padding:12px;
}
.skip-link:focus {
  top:12px;
}
.toast {
  position:fixed;
  bottom:24px;
  left:50%;
  transform:translateX(-50%);
  padding:0;
  background:var(--ink);
  color:white;
  font-size:.85rem;
  z-index:5;
}
.toast:not(:empty) {
  padding:12px 23px;
}
/* Case studies retain their evidence and adopt the same reading system. */
.case-hero {
  padding:55px 0 45px;
}
.case-breadcrumb {
  display:flex;
  gap:12px;
  color:var(--muted);
  font-size:.8rem;
  margin-bottom:37px;
}
.case-hero h1 {
  max-width:920px;
}
.case-summary {
  max-width:800px;
  color:var(--muted);
  font-size:1.12rem;
  margin-top:27px;
}
.case-facts {
  display:grid;
  grid-template-columns:repeat(4,1fr);
  margin-top:42px;
  border-block:1px solid var(--line);
}
.case-facts div {
  padding:20px 18px 20px 0;
}
.case-facts span {
  display:block;
  color:var(--muted);
  font:.68rem var(--mono);
  margin-bottom:10px;
}
.case-facts strong {
  font-size:.88rem;
}
.case-layout {
  display:grid;
  grid-template-columns:190px minmax(0,1fr);
  gap:65px;
}
.case-toc {
  align-self:start;
  position:sticky;
  top:35px;
  display:grid;
  gap:10px;
  font-size:.8rem;
}
.case-toc span {
  font:.68rem var(--mono);
  text-transform:uppercase;
  color:var(--muted);
  margin-bottom:12px;
}
.case-toc a {
  text-decoration:none;
}
.case-block {
  margin-bottom:55px;
  scroll-margin-top:30px;
}
.case-block h2 {
  margin-bottom:22px;
}
.case-block h3 {
  margin-bottom:12px;
}
.case-content p {
  color:#454c43;
}
.case-callout {
  background:var(--wash);
  border-left:2px solid var(--accent);
  padding:24px;
  margin:25px 0;
}
.case-callout>span {
  font:.68rem var(--mono);
  display:block;
  text-transform:uppercase;
  color:var(--accent);
  margin-bottom:10px;
}
.case-callout p {
  font-size:.91rem;
}
.architecture {
  padding:25px;
  border:1px solid var(--line);
  margin:26px 0;
}
.architecture-flow {
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  align-items:center;
  font:.8rem/1.7 var(--mono);
}
.architecture-flow span {
  padding:8px 11px;
  background:var(--wash);
}
.architecture-flow i {
  font-style:normal;
}
.case-metrics,.decision-grid {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
  margin:28px 0;
}
.case-metrics article {
  border-top:1px solid var(--line);
  padding-top:18px;
}
.case-metrics strong {
  display:block;
  font:2.4rem var(--serif);
  margin-bottom:10px;
}
.case-metrics span,.decision-grid span {
  font-size:.8rem;
  color:var(--muted);
}
.decision-grid {
  grid-template-columns:repeat(2,1fr);
}
.decision-grid article {
  padding:22px;
  background:var(--wash);
}
.decision-grid h3 {
  font-size:1.3rem;
  margin-top:12px;
}
.decision-grid p {
  font-size:.9rem;
}
.case-table-wrap {
  overflow:auto;
  margin:26px 0;
}
.case-next {
  border-top:1px solid var(--line);
  padding-block:35px 60px;
  display:flex;
  justify-content:space-between;
  gap:25px;
  align-items:center;
}
.case-next p {
  font-size:.8rem;
  color:var(--muted);
}
.section {
  padding-block:65px;
}
.section-heading {
  margin-bottom:35px;
}
.section-heading-split>p {
  margin-top:18px;
  max-width:720px;
}
.timeline-item {
  display:grid;
  grid-template-columns:190px minmax(0,1fr);
  gap:35px;
  padding:35px 0;
  border-top:1px solid var(--line);
}
.timeline-line {
  display:none;
}
.timeline-date,.role-type {
  font:.72rem/1.8 var(--mono);
  color:var(--muted);
}
.role-top h3 {
  margin-bottom:12px;
}
.tag {
  font-size:.75rem;
  color:var(--muted);
}
.timeline-content>p {
  margin-top:20px;
}
.tech-row {
  display:flex;
  gap:15px;
  flex-wrap:wrap;
  font:.7rem var(--mono);
  color:var(--muted);
}
.skills-grid,.lab-grid {
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:35px;
}
.skills-grid article,.lab-grid article {
  border-top:1px solid var(--line);
  padding-top:22px;
}
.skill-number,.lab-status,.lab-icon {
  color:var(--muted);
  font:.75rem var(--mono);
  margin-bottom:15px;
  display:block;
}
.skills-grid h3,.lab-grid h3 {
  margin-bottom:15px;
}
.skills-grid small,.text-note {
  color:var(--muted);
  font-size:.8rem;
}
.lab-section {
  background:var(--wash);
}
.article-head {
  padding:60px 0 45px;
  max-width:920px;
}
.article-head h1 {
  font-size:clamp(2.35rem,4.7vw,3.8rem);
  line-height:1.16;
}
.article-meta {
  font-size:.8rem;
  color:var(--muted);
  margin-top:25px;
}
.article-layout {
  display:grid;
  grid-template-columns:180px minmax(0,760px);
  gap:65px;
  padding-bottom:60px;
}
.article-content {
  min-width:0;
}
.article-content section {
  margin-bottom:43px;
  scroll-margin-top:25px;
}
.article-content h2 {
  font-size:1.85rem;
  margin:0 0 22px;
  line-height:1.3;
}
.article-content h3 {
  font-size:1.3rem;
  margin:25px 0 14px;
}
.article-content p {
  line-height:1.9;
}
.article-content figure {
  margin:30px 0;
}
.article-content figure img {
  display:block;
  width:100%;
  border:1px solid var(--line);
}
.abstract {
  padding:28px;
  border-block:1px solid var(--line);
}
.abstract h2 {
  font:.72rem var(--mono);
  text-transform:uppercase;
  letter-spacing:.08em;
  color:var(--accent);
}
.abstract p {
  font-size:.97rem;
  color:var(--muted);
}
.references {
  font-size:.85rem;
  overflow-wrap:anywhere;
}
.artifact-links {
  display:flex;
  flex-wrap:wrap;
  gap:12px 22px;
  font-size:.85rem;
  margin:20px 0;
}
.learning-line {
  display:flex;
  flex-wrap:wrap;
  gap:12px 35px;
  padding:22px 0;
  border-block:1px solid var(--line);
  font-size:.86rem;
  color:var(--muted);
}
.learning-line p { margin:0; }
.learning-line strong { color:var(--ink); }
.certificate-preview {
  display:block;
  max-width:660px;
  margin:26px 0 14px;
}
.certificate-preview img {
  display:block;
  width:100%;
  border:1px solid var(--line);
  background:white;
}
.study-goals {
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:28px;
  margin-block:28px 45px;
}
.study-goals article {
  border-top:1px solid var(--line);
  padding-top:20px;
}
.study-goals h3 { margin-bottom:10px; }
.study-goals p { font-size:.9rem; color:var(--muted); }
.study-goals small { color:var(--accent); }
.lab-map {
  border:1px solid var(--line);
  padding:26px;
  background:var(--wash);
}
.lab-map ol {
  display:grid;
  gap:14px;
  margin:0;
  padding-left:24px;
}
.lab-map li { padding-left:8px; }
.lab-map strong { display:block; }
.lab-map span { font-size:.88rem; color:var(--muted); }
.article-content .evidence-note { font-size:.87rem; color:var(--muted); }
.research-card .writeup-cover {
  min-height:170px;
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  padding:22px;
  border:1px solid var(--line);
  background:var(--wash);
}
.writeup-cover strong { font:1.65rem var(--serif); }
.writeup-cover span { font:.72rem var(--mono); color:var(--muted); }
@media(max-width:1000px) {
  .shell {
    width:calc(100% - 56px);
  }
  .primary-nav {
    gap:18px;
  }
  .brand small {
    display:none;
  }
  .home-hero {
    grid-template-columns:1fr 200px;
    gap:40px;
  }
  .case-layout,.article-layout {
    gap:35px;
    grid-template-columns:155px minmax(0,1fr);
  }
  .work-row {
    grid-template-columns:35px 1fr 140px 20px;
  }
}
@media(max-width:760px) {
  .shell {
    width:calc(100% - 40px);
  }
  .nav-wrap {
    min-height:85px;
    flex-wrap:wrap;
    gap:0;
    padding-block:18px;
  }
  .brand {
    font-size:.8rem;
  }
  .brand-mark {
    font-size:1.9rem;
    padding-right:17px;
  }
  .menu-toggle {
    display:block;
    padding:7px 0 7px 17px;
    border:0;
    background:none;
    font-size:.84rem;
  }
  .menu-toggle span {
    margin-left:10px;
  }
  .primary-nav {
    width:100%;
    flex-wrap:wrap;
    gap:7px 25px;
    padding-top:18px;
  }
  .js .primary-nav:not(.is-open) {
    display:none;
  }
  .primary-nav a {
    padding-block:10px;
  }
  .page-head {
    padding:50px 0 35px;
  }
  .home-hero {
    padding:52px 0 45px;
    grid-template-columns:1fr;
  }
  .home-hero h1 {
    font-size:clamp(2.85rem,9vw,4.4rem);
  }
  .home-hero .intro {
    font-size:1rem;
    margin-top:22px;
  }
  .margin-note {
    padding:22px 0 0;
    border-left:0;
    border-top:1px solid var(--line);
  }
  .margin-note .eyebrow {
    margin-bottom:0;
  }
  .margin-note dl {
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:10px 20px;
    margin-top:0;
  }
  .margin-note dl>div:last-child {
    grid-column:1/-1;
  }
  .home-work {
    padding:28px 0 40px;
  }
  .section-top h2 {
    font-size:1.6rem;
  }
  .section-top .text-link {
    font-size:.77rem;
  }
  .work-row {
    grid-template-columns:25px 1fr 18px;
    gap:12px;
    padding-block:24px;
  }
  .work-row h3 {
    font-size:1.3rem;
  }
  .work-meta {
    grid-column:2;
    grid-row:2;
  }
  .work-row .arrow {
    grid-column:3;
    grid-row:1;
  }
  .home-research,.about-layout,.contact-layout {
    grid-template-columns:1fr;
    gap:30px;
  }
  .home-research {
    padding:35px 0 50px;
  }
  .research-card {
    grid-template-columns:1fr;
    gap:22px;
  }
  .research-card img {
    max-width:420px;
  }
  .research-card h2 {
    font-size:1.65rem;
  }
  .credential {
    grid-template-columns:1fr;
    gap:10px;
  }
  .site-footer {
    grid-template-columns:1fr;
  }
  .site-footer nav {
    justify-content:flex-start;
  }
  .page-section {
    padding-bottom:50px;
  }
  .case-layout,.article-layout {
    grid-template-columns:1fr;
    gap:30px;
  }
  .case-toc {
    position:static;
    display:flex;
    flex-wrap:wrap;
    gap:12px 20px;
    padding-bottom:22px;
    border-bottom:1px solid var(--line);
  }
  .case-toc span {
    flex-basis:100%;
    margin:0;
  }
  .case-facts {
    grid-template-columns:repeat(2,1fr);
  }
  .case-facts div {
    border-bottom:1px solid var(--line);
  }
  .case-metrics,.decision-grid {
    grid-template-columns:1fr;
  }
  .case-next {
    flex-direction:column;
    align-items:flex-start;
  }
  .timeline-item {
    grid-template-columns:1fr;
    gap:15px;
  }
  .skills-grid,.lab-grid {
    grid-template-columns:1fr;
  }
  .proof-grid {grid-template-columns:1fr 1fr}
  .research-filters {grid-template-columns:1fr 1fr}
  .study-goals { grid-template-columns:1fr; gap:22px; }
  .article-head {
    padding:35px 0;
  }
  .article-head h1 {
    font-size:2.4rem;
  }
  .article-content h2 {
    font-size:1.65rem;
  }
  .abstract {
    padding:23px 0;
  }
  .section {
    padding-block:45px;
  }
}
@media (max-width:520px) {
  .proof-grid,.research-filters {grid-template-columns:1fr}
}
@media print {
  .site-header,.site-footer,.case-toc,.filter-bar,.skip-link,.toast {
    display:none;
  }
  body {
    background:white;
    font-size:11pt;
  }
  .shell {
    width:100%;
  }
  .article-layout,.case-layout {
    display:block;
  }
  h1 {
    font-size:30pt;
  }
  h2,h3 {
    break-after:avoid;
  }
  figure,pre {
    break-inside:avoid;
  }
  a {
    text-decoration:none;
  }
}