:root { --portfolio-max: 1200px; --portfolio-red: var(--accent); --portfolio-dark: #15191c; --portfolio-tint: var(--soft); --display-serif: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif; }
html[data-theme="dark"] { --portfolio-red: var(--accent); --portfolio-dark: #111518; --portfolio-tint: var(--soft); }

.portfolio-wrap { width: min(calc(100% - 48px), var(--portfolio-max)); margin: 0 auto; }
.portfolio-main { padding-bottom: 56px; }
.site-footer { border-top: 0; background: var(--portfolio-tint); }
.nav-links .current { color: var(--accent); font-weight: 600; }
.portfolio-hero::before { display: none; }
.eyebrow { margin: 0; color: var(--portfolio-red); font-family: inherit; font-size: .82rem; font-style: normal; font-weight: 400; letter-spacing: 0; text-transform: none; }
.portfolio-hero .eyebrow, .work-index .eyebrow { font-family: inherit; font-size: .68rem; font-style: normal; font-weight: 750; letter-spacing: .13em; text-transform: uppercase; }

.section-rail { position: fixed; z-index: 20; top: 50%; left: max(18px, calc((100vw - var(--portfolio-max)) / 2 - 208px)); display: grid; width: 190px; gap: 5px; transform: translateY(-50%); }
.section-rail::before { position: absolute; z-index: -1; top: 13px; bottom: 55px; left: 6px; width: 1px; background: rgba(143, 37, 55, .2); content: ""; }
.section-rail a { position: relative; display: grid; min-height: 33px; grid-template-columns: 22px auto; gap: 9px; align-items: center; padding: 0 7px 0 21px; border-radius: 5px; color: var(--ink); font-size: .61rem; letter-spacing: .08em; text-transform: uppercase; transition: color .18s ease, background .18s ease; }
.section-rail a::before { position: absolute; left: 3px; width: 7px; height: 7px; border: 2px solid var(--bg); border-radius: 50%; background: #c7c9cb; box-shadow: 0 0 0 1px rgba(143, 37, 55, .25); content: ""; transition: background .18s ease, transform .18s ease; }
.section-rail span { font-variant-numeric: tabular-nums; font-weight: 750; }
.section-rail strong { font-size: .66rem; font-weight: 600; letter-spacing: .07em; white-space: nowrap; }
.section-rail a:hover, .section-rail a:focus-visible { color: var(--portfolio-red); background: var(--portfolio-tint); text-decoration: none; }
.section-rail a[aria-current="location"] { color: var(--portfolio-red); background: color-mix(in srgb, var(--portfolio-red) 9%, var(--bg)); text-decoration: none; }
.section-rail a[aria-current="location"] strong { font-weight: 750; }
.section-rail a:hover::before, .section-rail a:focus-visible::before, .section-rail a[aria-current="location"]::before { background: var(--portfolio-red); transform: scale(1.22); }
.section-rail a:focus-visible { border-radius: 2px; outline: 2px solid var(--portfolio-red); outline-offset: 3px; }
.section-rail .rail-top { margin-top: 9px; color: var(--portfolio-red); letter-spacing: .03em; text-transform: none; }
.section-rail .rail-top::before { display: none; }
.section-rail .rail-top span { font-size: 1rem; line-height: 1; }
.section-rail .rail-top strong { font-size: .67rem; font-weight: 650; letter-spacing: 0; }

.portfolio-hero { position: relative; display: grid; grid-template-columns: 1fr; gap: 22px; align-items: start; padding: 58px 0 36px; }
.portfolio-hero::before { position: absolute; top: 74px; right: 0; width: 56px; border-top: 2px solid var(--portfolio-red); content: ""; }
.portfolio-hero h1 { max-width: 1100px; margin: 17px 0 0; font-family: var(--display-serif); font-size: clamp(2.15rem, 3.4vw, 3.25rem); font-weight: 500; line-height: 1.13; letter-spacing: -.03em; text-wrap: balance; }
.hero-intro { max-width: 880px; padding-bottom: 5px; }
.hero-intro p { margin: 0; color: var(--ink); font-size: 1.06rem; line-height: 1.65; }
.text-link { color: var(--ink); font-size: .84rem; font-weight: 700; }

.section-heading { margin-bottom: 24px; }
.section-heading h2 { max-width: 720px; margin: 11px 0 0; font-family: var(--display-serif); font-size: clamp(1.65rem, 2.3vw, 2.1rem); font-weight: 500; line-height: 1.2; letter-spacing: -.025em; }
.section-heading-row { display: grid; grid-template-columns: 1fr; gap: 12px; align-items: start; }
.section-heading-row > p { max-width: 850px; margin: 0; color: var(--ink); font-size: 1rem; line-height: 1.6; }

.work-index { padding: 28px 0 36px; }
.work-index-heading { display: grid; grid-template-columns: 1fr; gap: 12px; align-items: start; }
.work-index h2 { max-width: 850px; margin: 10px 0 0; font-family: var(--display-serif); font-size: clamp(1.85rem, 2.7vw, 2.35rem); font-weight: 400; line-height: 1.15; letter-spacing: -.02em; }
.work-index-heading > p { max-width: 850px; margin: 0; color: var(--ink); font-size: 1rem; line-height: 1.6; }
/* A connected index: open space, precise lines, and outlined nodes. */
.work-index ol { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; margin: 30px 0 0; padding: 0; list-style: none; }
.work-index li { position: relative; min-width: 0; }
.work-index li::before { position: absolute; top: 7px; left: 7px; right: -7px; height: 1px; background: color-mix(in srgb, var(--portfolio-red) 32%, var(--bg)); content: ""; }
.work-index li:last-child::before { right: 0; }
.work-index a { position: relative; display: grid; height: 100%; grid-template-columns: minmax(0, 1fr) 18px; grid-template-rows: auto auto 1fr; column-gap: 10px; align-content: start; padding: 29px 22px 18px 0; color: var(--ink); transition: color .18s ease; }
.work-index a::before { position: absolute; top: 0; left: 0; width: 15px; height: 15px; box-sizing: border-box; border: 1px solid var(--portfolio-red); border-radius: 50%; background: var(--bg); box-shadow: inset 0 0 0 3px var(--bg); content: ""; transition: background .18s ease; }
.work-index a::after { position: absolute; top: 7px; left: 18px; width: 0; height: 1px; background: var(--portfolio-red); content: ""; transition: width .18s ease; }
.work-index a:hover, .work-index a:focus-visible { color: var(--portfolio-red); text-decoration: none; }
.work-index a:hover::before, .work-index a:focus-visible::before { background: var(--portfolio-red); }
.work-index a:hover::after, .work-index a:focus-visible::after { width: 46px; }
.work-index a[aria-current="location"] { color: var(--portfolio-red); }
.work-index a[aria-current="location"]::before { background: var(--portfolio-red); }
.work-index a[aria-current="location"]::after { width: 46px; }
.work-index a:focus-visible { outline: 2px solid var(--portfolio-red); outline-offset: 5px; }
.work-index span { grid-column: 1 / -1; color: var(--portfolio-red); font-size: .7rem; font-weight: 700; letter-spacing: .08em; }
.work-index strong { grid-column: 1; margin-top: 9px; font-family: var(--display-serif); font-size: 1.1rem; font-weight: 500; line-height: 1.35; }
.work-index small { grid-column: 1 / -1; margin-top: 9px; color: var(--ink); font-size: .76rem; line-height: 1.6; }
.work-index em { grid-column: 2; grid-row: 2; align-self: start; margin-top: 9px; color: var(--portfolio-red); font-size: 1rem; line-height: 1.35; font-style: normal; }

.portfolio-group { padding: 56px 0 62px; scroll-margin-top: 24px; }
.portfolio-group + .portfolio-group { margin-top: 12px; }
.research-case { display: grid; width: 100%; grid-template-columns: minmax(280px, .94fr) minmax(0, 1.06fr); min-height: 320px; margin-top: 24px; overflow: hidden; background: var(--portfolio-tint); }
.research-case-reverse { grid-template-columns: minmax(0, 1.06fr) minmax(280px, .94fr); }
.research-case > *, .research-pipeline > *, .field-card > *, .product-card > * { min-width: 0; }
.research-case-reverse .case-cover { order: 2; }
.research-case-reverse .research-body { order: 1; }
.case-cover { display: flex; min-width: 0; overflow: hidden; align-items: center; padding: 16px; background: transparent; }
.case-cover img { display: block; max-width: 100%; width: 100%; height: auto; object-fit: contain; border-radius: 3px; transition: transform .32s ease; }
.case-cover:hover img { transform: scale(1.018); }
.research-body { display: flex; flex-direction: column; justify-content: center; padding: 22px 27px; }
.research-body, .field-body, .product-card > div:last-child, .archive-links a { min-width: 0; }
.research-body h3, .research-body p, .field-body h3, .field-body p, .product-card h3, .product-card p, .archive-links strong, .archive-links small { overflow-wrap: break-word; }
.case-index { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; color: var(--ink); font-size: .66rem; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; }
.case-index span:first-child { color: var(--ink); font-family: var(--display-serif); font-size: .82rem; font-weight: 400; letter-spacing: 0; }
.case-index time { color: var(--portfolio-red); font-variant-numeric: tabular-nums; letter-spacing: .035em; }
.research-body h3 { margin: 11px 0 8px; font-family: var(--display-serif); font-size: clamp(1.27rem, 1.55vw, 1.45rem); font-weight: 500; line-height: 1.22; letter-spacing: -.018em; text-wrap: balance; }
.case-thesis { margin: 0; color: var(--ink); font-size: .84rem; line-height: 1.5; }
.evidence-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 15px; }
.evidence-grid > div { padding: 13px 0 0; }
.evidence-grid > div + div { padding-left: 0; }
.evidence-grid strong { display: block; margin-bottom: 6px; color: var(--ink); font-size: .68rem; letter-spacing: .07em; text-transform: uppercase; }
.evidence-grid p { margin: 0; color: var(--muted); font-size: .77rem; line-height: 1.48; }
.contribution-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 16px; counter-reset: contribution; }
.contribution-grid > div { position: relative; min-width: 0; padding-top: 18px; counter-increment: contribution; }
.contribution-grid > div::before { position: absolute; top: 0; left: 0; color: var(--portfolio-red); content: counter(contribution, decimal-leading-zero); font-size: .56rem; font-weight: 750; letter-spacing: .08em; }
.contribution-grid strong { display: block; margin-bottom: 5px; color: var(--ink); font-size: .65rem; letter-spacing: .045em; text-transform: uppercase; }
.contribution-grid p { margin: 0; overflow-wrap: anywhere; color: color-mix(in srgb, var(--ink) 78%, var(--bg)); font-size: .7rem; line-height: 1.43; }
.signal-list { display: flex; flex-wrap: wrap; gap: 6px 15px; margin: 12px 0 0; padding: 0; list-style: none; color: var(--ink); font-size: .69rem; font-weight: 600; }
.signal-list li::before { content: "◆"; margin-right: 7px; color: var(--portfolio-red); font-size: .49rem; vertical-align: 1px; }
.metric-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 15px; }
.metric-row div { padding: 14px 0 0; }
.metric-row div + div { padding-left: 0; }
.metric-row strong, .metric-row span { display: block; }
.metric-row strong { font-family: var(--display-serif); font-size: 1.52rem; font-weight: 400; }
.metric-row span { margin-top: 4px; color: var(--muted); font-size: .68rem; }
.claim-note { margin: 13px 0 0; color: var(--muted); font-size: .75rem; line-height: 1.46; }
.claim-note strong { color: var(--ink); }
.case-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 18px; margin-top: auto; padding-top: 14px; font-size: .75rem; font-weight: 700; }
.case-actions a { color: var(--ink); }
.case-actions a::after { content: " ↗"; }
.case-actions .primary-link { padding: 4px 0; border: 0; border-bottom: 1px solid var(--ink); border-radius: 0; }
.case-actions .primary-link:hover { color: var(--portfolio-red); background: transparent; border-color: var(--portfolio-red); text-decoration: none; }
.research-pipeline { display: grid; grid-template-columns: minmax(250px, .75fr) minmax(0, 1.25fr) auto; gap: 28px; align-items: center; margin-top: 18px; padding: 22px 24px; background: var(--portfolio-tint); }
.research-pipeline h3 { margin: 10px 0 0; font-family: var(--display-serif); font-size: 1.25rem; font-weight: 400; line-height: 1.16; }
.pipeline-contributions { display: grid; gap: 8px; color: var(--muted); font-size: .7rem; line-height: 1.43; }
.pipeline-contributions span { display: block; }
.pipeline-contributions strong { margin-right: 5px; color: var(--ink); }
.research-pipeline > a { color: var(--ink); font-size: .72rem; font-weight: 700; white-space: nowrap; }

.field-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.field-card { display: flex; min-width: 0; overflow: hidden; flex-direction: column; background: var(--portfolio-tint); }
.field-cover { display: block; overflow: hidden; padding: 12px 12px 0; }
.field-cover img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: contain; transition: transform .3s ease; }
.field-cover:hover img { transform: scale(1.018); }
.field-body { display: flex; flex: 1; flex-direction: column; padding: 18px 20px 20px; }
.field-body h3 { margin: 11px 0 7px; font-family: var(--display-serif); font-size: 1.34rem; font-weight: 500; line-height: 1.16; letter-spacing: -.015em; }
.field-body > p { margin: 0; color: var(--ink); font-size: .77rem; line-height: 1.47; }
.project-core { display: grid; gap: 8px; margin: 14px 0 0; padding: 0; list-style: none; }
.project-core li { display: grid; grid-template-columns: 100px minmax(0, 1fr); gap: 11px; align-items: start; }
.project-core strong { min-width: 0; overflow-wrap: anywhere; color: var(--portfolio-red); font-size: .62rem; line-height: 1.38; letter-spacing: .035em; text-transform: uppercase; }
.project-core span { min-width: 0; overflow-wrap: anywhere; color: color-mix(in srgb, var(--ink) 78%, var(--bg)); font-size: .7rem; line-height: 1.42; }
.field-body details { margin-top: 17px; }
.field-body summary { padding: 10px 0; color: var(--ink); font-size: .7rem; font-weight: 750; cursor: pointer; }
.field-body details p { margin: 0; padding: 0 0 12px; color: var(--muted); font-size: .72rem; line-height: 1.5; }

.product-grid { display: grid; grid-template-columns: 1fr; gap: 18px; }
.product-card { display: grid; min-width: 0; grid-template-columns: minmax(220px, 300px) minmax(0, 1fr); gap: clamp(20px, 2.5vw, 32px); align-items: center; padding: 18px 24px; overflow: hidden; background: var(--portfolio-tint); }
.product-card:nth-child(even) { grid-template-columns: minmax(0, 1fr) minmax(220px, 300px); }
.product-card:nth-child(even) .product-visual { order: 2; }
.product-card:nth-child(even) > div:last-child { order: 1; }
.product-card:hover { background: var(--portfolio-tint); }
.product-visual { display: grid; width: 100%; max-width: 300px; aspect-ratio: 14 / 9; place-items: center; justify-self: center; overflow: hidden; background: #f7f7f4; }
.product-visual img { display: block; max-width: 100%; width: 100%; height: 100%; object-fit: contain; transition: transform .3s ease; }
.product-card:hover .product-visual img { transform: scale(1.025); }
.product-card h3 { margin: 11px 0 7px; font-family: var(--display-serif); font-size: 1.32rem; font-weight: 500; line-height: 1.16; }
.product-card p { margin: 0; color: var(--muted); font-size: .79rem; line-height: 1.52; }
.system-core { display: flex; flex-wrap: wrap; gap: 5px 12px; margin: 10px 0 0; padding: 0; list-style: none; color: var(--ink); font-size: .66rem; font-weight: 600; line-height: 1.35; }
.system-core li::before { margin-right: 6px; color: var(--portfolio-red); content: "◆"; font-size: .44rem; vertical-align: 1px; }
.system-core li { min-width: 0; overflow-wrap: anywhere; }

.archive-group { display: grid; grid-template-columns: 190px minmax(0, 1fr); align-items: start; }
.archive-group + .archive-group { margin-top: 18px; }
.archive-label { padding: 19px 26px 18px 0; }
.archive-label span { color: var(--portfolio-red); font-family: var(--display-serif); font-size: .76rem; }
.archive-label h3 { margin: 17px 0 0; font-family: var(--display-serif); font-size: 1.27rem; font-weight: 400; line-height: 1.12; }
.archive-links { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
.archive-links-three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.archive-links-two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.archive-links a { position: relative; display: flex; min-height: 204px; min-width: 0; height: auto; overflow: visible; flex-direction: column; padding: 20px 24px 18px 18px; color: var(--ink); background: var(--portfolio-tint); }
.archive-links a > * { flex-shrink: 0; }
.archive-links a::after { position: absolute; top: 18px; right: 11px; color: var(--portfolio-red); content: "↗"; font-size: .72rem; }
.archive-links a:hover { color: var(--portfolio-red); background: var(--portfolio-tint); text-decoration: none; }
.archive-links a.archive-featured { box-shadow: inset 3px 0 0 var(--portfolio-red); }
.archive-links strong, .archive-links small, .archive-links em, .archive-year { display: block; }
.archive-year { margin-bottom: 10px; color: var(--portfolio-red); font-size: .62rem; font-weight: 750; letter-spacing: .08em; }
.archive-links strong { padding-right: 4px; font-family: var(--display-serif); font-size: .94rem; font-weight: 500; line-height: 1.2; }
.archive-links small { margin-top: 11px; color: color-mix(in srgb, var(--ink) 74%, var(--bg)); font-size: .66rem; line-height: 1.45; }
.archive-links em { margin-top: auto; padding-top: 12px; color: var(--portfolio-red); font-size: .6rem; font-style: normal; font-weight: 750; letter-spacing: .06em; text-transform: uppercase; }
.evidence-timeline { display: inline-block; margin-top: 18px; }

.selected-chronology { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 48px; margin: 14px 0 56px; padding: 38px 40px; background: var(--portfolio-tint); }
.chronology-heading h2 { margin: 10px 0 0; font-family: var(--display-serif); font-size: 1.66rem; font-weight: 400; line-height: 1.1; letter-spacing: -.015em; }
.chronology-track { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; }
.chronology-track div { position: relative; min-width: 0; padding-top: 17px; }
.chronology-track div::before { position: absolute; top: 0; left: 0; width: 7px; height: 7px; border-radius: 50%; background: var(--portfolio-red); content: ""; }
.chronology-track time, .chronology-track strong, .chronology-track span { display: block; }
.chronology-track time { color: var(--portfolio-red); font-family: var(--display-serif); font-size: .83rem; font-variant-numeric: tabular-nums; }
.chronology-track strong { margin-top: 8px; font-size: .72rem; line-height: 1.35; }
.chronology-track span { margin-top: 6px; overflow-wrap: anywhere; color: var(--muted); font-size: .66rem; line-height: 1.45; }

.closing-band { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, .85fr); gap: 56px; align-items: center; padding: 36px 46px; color: #fff; background: var(--portfolio-dark); }
.closing-kicker { margin: 0 0 12px; color: #d9dddf; font-size: .68rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.closing-band h2 { max-width: 520px; margin: 0; color: #fff; font-size: clamp(1.75rem, 2.7vw, 2.35rem); font-weight: 500; letter-spacing: -.035em; line-height: 1.18; }
.closing-details p { margin: 0 0 16px; color: #e3e6e8; font-size: .88rem; line-height: 1.65; }
.closing-details a { display: inline-block; padding-bottom: 4px; border-bottom: 1px solid #fff; color: #fff; font-size: .83rem; font-weight: 600; text-decoration: none; }
.closing-details a:hover { border-bottom-width: 2px; }
.closing-details a span { margin-left: 6px; }
.site-footer .portfolio-wrap { display: flex; justify-content: space-between; gap: 20px; }

@media (min-width: 981px) and (max-width: 1663px) {
  .portfolio-main { width: calc(100% - 256px); margin-left: 232px; margin-right: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  .section-rail a, .section-rail a::before { transition: none; }
}

@media (max-width: 1400px) {
  .archive-group { grid-template-columns: minmax(0, 1fr); }
  .archive-label { padding: 0 0 18px; }
  .archive-label h3 { margin-top: 8px; }
  .archive-links, .archive-links-three, .archive-links-two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 980px) {
  .section-rail { display: none; }
  .portfolio-hero { grid-template-columns: 1fr; gap: 24px; padding-top: 50px; }
  .portfolio-hero::before { top: 50px; }
  .hero-intro { max-width: 700px; }
  .section-heading-row { grid-template-columns: 1fr; gap: 16px; }
  .work-index-heading { grid-template-columns: 1fr; gap: 14px; }
  .work-index h2 { max-width: 720px; }
  .work-index-heading > p { max-width: 620px; }
  .research-case { grid-template-columns: minmax(250px, .94fr) minmax(0, 1.06fr); }
  .research-case-reverse { grid-template-columns: minmax(0, 1.06fr) minmax(250px, .94fr); }
  .contribution-grid { grid-template-columns: 1fr 1fr; }
  .contribution-grid > div:last-child:nth-child(odd) { grid-column: 1 / -1; }
  .research-pipeline { grid-template-columns: 1fr; gap: 14px; }
  .field-grid { grid-template-columns: 1fr 1fr; }
  .field-card:last-child:nth-child(odd) { grid-column: 1 / -1; }
  .product-grid { grid-template-columns: 1fr; }
  .product-card:last-child:nth-child(odd) { grid-column: auto; }
  .archive-group { grid-template-columns: 1fr; }
  .archive-label { padding-right: 0; }
  .archive-links { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .archive-links-three { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .archive-links-two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .archive-links-three a:last-child:nth-child(odd) { grid-column: 1 / -1; }
  .selected-chronology { grid-template-columns: 1fr; gap: 24px; }
  .chronology-track { grid-template-columns: 1fr 1fr; }
  .closing-band { column-gap: 36px; }
}

@media (max-width: 900px) {
  .closing-band { grid-template-columns: 1fr; gap: 20px; }
  .research-case, .research-case-reverse { grid-template-columns: 1fr; }
  .research-case-reverse .case-cover, .research-case-reverse .research-body { order: initial; }
  .case-cover { width: min(100%, 540px); justify-self: center; padding: 20px 20px 4px; }
  .research-body { padding-top: 22px; }
}

@media (max-width: 700px) {
  .portfolio-wrap { width: min(calc(100% - 30px), var(--portfolio-max)); }
  .portfolio-hero { padding: 38px 0 31px; }
  .portfolio-hero h1 { font-size: clamp(2rem, 7.8vw, 2.7rem); line-height: 1.15; }
  .portfolio-group { padding: 44px 0 50px; }
  .research-case, .research-case-reverse { grid-template-columns: 1fr; }
  .research-case-reverse .case-cover, .research-case-reverse .research-body { order: initial; }
  .case-cover { width: 100%; max-width: 520px; justify-self: center; }
  .research-body { padding: 27px 21px 25px; }
  .research-body h3 { font-size: 1.4rem; }
  .evidence-grid { grid-template-columns: 1fr; }
  .evidence-grid > div { padding: 13px 0; }
  .evidence-grid > div + div { padding-left: 0; }
  .metric-row strong { font-size: 1.3rem; }
  .contribution-grid { grid-template-columns: 1fr; gap: 12px; }
  .contribution-grid > div { padding-top: 18px; }
  .field-grid { grid-template-columns: 1fr; }
  .field-card:last-child:nth-child(odd) { grid-column: auto; }
  .field-cover img { height: auto; }
  .project-core li { grid-template-columns: 92px minmax(0, 1fr); gap: 10px; }
  .product-grid { grid-template-columns: 1fr; }
  .product-card, .product-card:nth-child(even), .product-card:last-child:nth-child(odd) { grid-column: auto; grid-template-columns: 1fr; gap: 12px; padding: 16px 17px; }
  .product-card:nth-child(even) .product-visual, .product-card:nth-child(even) > div:last-child { order: initial; }
  .product-visual { width: min(100%, 280px); justify-self: center; }
  .product-card h3 { font-size: 1.28rem; }
  .archive-links, .archive-links-three, .archive-links-two { grid-template-columns: 1fr; }
  .archive-links-three a:last-child:nth-child(odd) { grid-column: auto; }
  .archive-links a { min-height: 0; }
  .chronology-track { grid-template-columns: 1fr; gap: 18px; }
  .selected-chronology { padding: 30px 24px; }
  .closing-band { padding: 26px 24px; }
  .site-footer .portfolio-wrap { display: block; }
}

@media (max-width: 520px) {
  .portfolio-hero::before { width: 34px; }

}

@media (prefers-reduced-motion: reduce) { .case-cover img, .field-cover img, .product-visual img, .work-index a { transition: none; } }
@media (hover: none) { .case-cover:hover img, .field-cover:hover img, .product-card:hover .product-visual img { transform: none; } }

/* Institution context is a label, not a separate control. */
.project-affiliations { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 10px; margin: 9px 0 12px; }
.affiliation-tag { display: inline-flex; flex-wrap: wrap; align-items: baseline; gap: 3px 7px; max-width: 100%; padding: 4px 8px; border-radius: 3px; background: color-mix(in srgb, var(--portfolio-red) 5%, var(--bg)); color: var(--ink); font-size: .7rem; line-height: 1.45; }
.affiliation-tag b { font-weight: 600; }
.affiliation-tag > span { font-size: .65rem; color: var(--muted); }
.archive-links .project-affiliations { display: flex; margin: 5px 0 9px; }
.archive-links .affiliation-tag { display: inline-flex; }

/* Project names stay subordinate to the four permanent section links. */
.section-rail { max-height: calc(100dvh - 160px); overflow-y: auto; scrollbar-width: thin; }
.rail-projects { display: grid; gap: 2px; padding: 1px 0 10px 22px; }
.rail-projects[hidden] { display: none; }
.section-rail .rail-projects a { display: block; min-height: 0; padding: 6px 3px 6px 10px; border-radius: 0; font-size: .66rem; line-height: 1.4; font-weight: 400; letter-spacing: 0; text-transform: none; overflow-wrap: break-word; }
.section-rail .rail-projects a::before { left: 0; top: 12px; width: 4px; height: 4px; border: 0; box-shadow: none; background: transparent; }
.section-rail .rail-projects a[aria-current="location"] { background: transparent; font-weight: 650; }
.section-rail .rail-projects a[aria-current="location"]::before { background: var(--portfolio-red); }
.portfolio-group article, .archive-links > a { scroll-margin-top: 110px; }

@media (min-width: 701px) and (max-width: 1250px) {
  .work-index ol { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 22px; }
  .work-index li:nth-child(even)::before { right: 0; }
}
@media (max-width: 700px) {
  .work-index ol { grid-template-columns: 1fr; }
  .work-index li::before { top: 7px; bottom: -7px; left: 7px; right: auto; width: 1px; height: auto; }
  .work-index li:last-child::before { display: none; }
  .work-index a { padding: 0 4px 28px 33px; }
  .work-index a::after { display: none; }
  .work-index strong, .work-index em { margin-top: 6px; }
}
@media (prefers-reduced-motion: reduce) {
  .work-index a::before, .work-index a::after { transition: none; }
}

/* Editorial project rhythm: one separator, open typography, distinct figures. */
.research-case, .field-card, .product-card, .archive-links > a {
  position: relative;
  border: 0;
}
.research-case, .product-card {
  border-top: 1px solid var(--line);
  background: transparent;
}
.research-case { margin-top: 30px; padding-top: 28px; }
.research-body { padding: 12px 0 12px 30px; }
.research-case-reverse .research-body { padding: 12px 30px 12px 0; }
.case-cover { background: var(--portfolio-tint); padding: 10px; align-self: center; }
.case-cover img { border-radius: 0; }
.research-body h3, .field-body h3, .product-card h3, .archive-links strong {
  font-weight: 600;
  line-height: 1.25;
}
.case-index { gap: 8px 12px; font-size: .61rem; color: var(--muted); letter-spacing: .075em; }
.case-index span:first-child { color: var(--portfolio-red); font-size: .76rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.case-index time { color: var(--muted); font-weight: 500; }
.project-affiliations { gap: 5px 14px; margin: 10px 0 14px; }
.affiliation-tag { gap: 3px 6px; padding: 0; border-radius: 0; background: transparent; }
.affiliation-tag b { font-size: .7rem; }
.affiliation-tag > span { font-size: .64rem; }
.research-body h3 { font-size: clamp(1.2rem, 1.4vw, 1.35rem); }
.case-thesis { font-size: .84rem; line-height: 1.6; }
/* Keep method explanations readable beside the larger research figures. */
.contribution-grid { grid-template-columns: 1fr; gap: 12px; margin-top: 20px; }
.contribution-grid > div { display: grid; grid-template-columns: 128px minmax(0, 1fr); gap: 12px; padding: 0 0 0 24px; }
.contribution-grid > div::before { top: 2px; }
.contribution-grid > div:last-child:nth-child(odd) { grid-column: auto; }
.contribution-grid strong { margin-bottom: 0; line-height: 1.5; }
.contribution-grid p { font-size: .74rem; line-height: 1.55; }
.signal-list { margin-top: 18px; gap: 8px 16px; font-weight: 500; line-height: 1.5; }
.field-grid { gap: 32px; }
.field-card { background: transparent; }
.field-cover { padding: 14px; background: var(--portfolio-tint); }
.field-body { padding: 22px 0 18px; }
.field-body > p { line-height: 1.6; }
.project-core { gap: 12px; margin-top: 20px; }
.project-core span { font-size: .74rem; line-height: 1.5; }
.product-grid { gap: 0; }
.product-card { grid-template-columns: minmax(260px, 1.08fr) minmax(0, 1.42fr); gap: 26px; padding: 22px 0; }
.product-card:nth-child(even) { grid-template-columns: minmax(0, 1.42fr) minmax(260px, 1.08fr); }
.product-card:hover { background: transparent; }
.product-visual { max-width: none; aspect-ratio: 16 / 9; background: #f7f7f4; }
.product-visual img { transform: none; }
.product-card:hover .product-visual img { transform: none; }
.product-card h3 { font-size: 1.25rem; letter-spacing: -.02em; }
.product-card p { color: color-mix(in srgb, var(--ink) 82%, var(--bg)); font-size: .82rem; line-height: 1.6; }
.system-core { margin-top: 14px; gap: 8px 16px; line-height: 1.5; font-weight: 500; }
.case-actions { padding-top: 18px; gap: 8px 20px; font-weight: 600; }
.case-actions a { display: inline-flex; align-items: center; gap: 4px; }
.case-actions .primary-link { color: var(--portfolio-red); border: 0; padding: 4px 0; }
.case-actions a:hover { text-decoration: underline; text-underline-offset: 5px; }
.case-actions a:focus-visible, .field-body summary:focus-visible, .archive-links > a:focus-visible {
  outline: 2px solid var(--portfolio-red); outline-offset: 4px;
}
.archive-links { gap: 16px; }
.archive-links > a { padding: 24px; }
.archive-links a.archive-featured { box-shadow: none; }
.archive-links a:hover { background: color-mix(in srgb, var(--portfolio-red) 4%, var(--portfolio-tint)); }
.archive-links strong { font-size: 1rem; }
.archive-links small { font-size: .73rem; line-height: 1.55; }
.archive-links em { padding-top: 22px; }
@media (max-width: 900px) {
  .research-body, .research-case-reverse .research-body { padding: 24px 0 8px; }
  .case-cover { width: 100%; max-width: 580px; padding: 10px; }
  .product-card, .product-card:nth-child(even) { gap: 24px; }
}
@media (max-width: 700px) {
  .research-case { margin-top: 32px; padding-top: 24px; }
  .contribution-grid > div { grid-template-columns: 1fr; gap: 4px; }
  .field-grid { gap: 32px; }
  .product-card, .product-card:nth-child(even), .product-card:last-child:nth-child(odd) {
    grid-template-columns: 1fr; gap: 22px; padding: 26px 0;
  }
  .product-visual { width: 100%; max-width: 420px; }
  .case-index { gap: 7px 10px; }
  .case-index > span:last-child { flex-basis: 100%; font-size: .64rem; line-height: 1.5; }
  .research-body h3, .field-body h3, .product-card h3 { text-wrap: pretty; }
  .signal-list, .system-core { display: grid; gap: 8px; font-size: .76rem; line-height: 1.5; }
  .signal-list li, .system-core li { position: relative; padding-left: 13px; }
  .signal-list li::before, .system-core li::before { position: absolute; left: 0; top: .25em; margin: 0; }
  .case-actions { gap: 4px 18px; }
  .case-actions a { min-height: 44px; }
  .contribution-grid p, .project-core span, .archive-links small { font-size: .8rem; line-height: 1.55; }
}

/* Keep the headline’s two ideas together on wider screens. */
.hero-title-line { display: block; }
@media (min-width: 701px) {
  .hero-title-line:first-child { white-space: nowrap; }
}

/* Institution badges use the original LinkedIn marks, separate from the diagram. */
.case-cover, .field-cover, .product-visual { position: relative; display: block; padding: 54px 10px 10px; }
.product-visual { aspect-ratio: auto; }
.product-visual > img { height: auto; aspect-ratio: 16 / 9; }
.cover-organizations { position: absolute; top: 8px; right: 12px; display: flex; align-items: center; gap: 7px; }
.org-badge { display: grid; place-items: center; width: 42px; height: 42px; padding: 2px; background: #fff; border: 1px solid #e2e5e6; border-radius: 5px; box-shadow: 0 2px 5px rgb(20 25 28 / 5%); }
.case-cover .org-logo, .field-cover .org-logo, .product-visual .org-logo,
.affiliation-tag .org-logo { display: block; width: 100%; height: 100%; max-width: 100%; aspect-ratio: 1; object-fit: contain; border-radius: 2px; transform: none; transition: none; }
.affiliation-tag.affiliation-with-logo { display: grid; grid-template-columns: 40px minmax(0, 1fr); gap: 3px 10px; align-items: center; }
.affiliation-with-logo .org-logo { grid-column: 1; grid-row: 1 / 3; width: 40px; height: 40px; background: #fff; border: 1px solid #e2e5e6; border-radius: 4px; }
.affiliation-with-logo b, .affiliation-with-logo > span { grid-column: 2; }
@media (max-width: 700px) {
  .case-cover, .field-cover, .product-visual { padding: 47px 6px 6px; }
  .cover-organizations { top: 7px; right: 9px; gap: 6px; }
  .org-badge { width: 36px; height: 36px; padding: 1px; }
}

.case-cover:hover .org-logo, .field-cover:hover .org-logo, .product-card:hover .org-logo { transform: none; }