:root {
  color-scheme: light;
  --ink: #142b3b; --paper: #f5f8fb; --surface: #fff;
  --teal: #147d83; --blue: #355ad8; --slate: #546576; --line: #d4dfe7;
  --primary: var(--paper); --accent: var(--teal);
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --ink: #e5edf4; --paper: #13232f; --surface: #1a303f;
  --teal: #7bd4d5; --blue: #a6baff; --slate: #b3c4d0; --line: #385364;
}
* { box-sizing: border-box; }
html { scroll-behavior: auto; scroll-padding-top: 7rem; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-size: 16px; line-height: 1.65; }
a { color: var(--blue); text-underline-offset: .22em; }
a:hover { text-decoration-thickness: 2px; }
button, summary, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; cursor: pointer; }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 5px; }
[hidden] { display: none !important; }
.container, .site-nav, .footer-content, .footer-bottom { width: min(1120px, calc(100% - 64px)); margin-inline: auto; }
.skip-link { position: fixed; top: -100px; left: 1rem; padding: .7rem 1rem; background: var(--surface); z-index: 20; }
.skip-link:focus { top: 1rem; }
header { position: sticky; top: 0; z-index: 10; background: var(--paper); border-bottom: 1px solid var(--line); }
.site-nav { display: flex; align-items: center; gap: 2rem; min-height: 82px; }
.logo { color: var(--ink); text-decoration: none; font-size: 1.05rem; font-weight: 700; white-space: nowrap; }
.logo span { color: var(--slate); font-weight: 400; }
.nav-links { display: flex; gap: 1.4rem; align-items: center; list-style: none; padding: 0; margin: 0 0 0 auto; }
.nav-link { color: var(--ink); text-decoration: none; font-size: .91rem; }
.site-controls { display: flex; gap: .65rem; }
.control-button, .menu-button { border: 1px solid var(--line); padding: .45rem .75rem; border-radius: 5px; background: var(--surface); color: var(--ink); font-size: .85rem; min-height: 44px; }
.menu-button { display: none; }
section { padding: 4.5rem 0; scroll-margin-top: 1rem; }
section + section { border-top: 1px solid var(--line); }
.hero { padding: 6rem 0 5rem; }
.hero-grid { display: grid; grid-template-columns: 1fr 240px; gap: 5rem; align-items: end; }
.hero-name { font-size: 1.15rem; color: var(--teal); font-weight: 600; margin: 0 0 1.5rem; }
h1 { font-size: clamp(2.7rem, 5.2vw, 4.7rem); line-height: 1.08; letter-spacing: -.055em; margin: 0 0 1.7rem; font-weight: 650; }
h1 span { display: block; }
.hero-description { color: var(--slate); font-size: 1.13rem; max-width: 61ch; margin-bottom: 2rem; }
.hero-aside { border-left: 3px solid var(--teal); padding: .2rem 0 .2rem 1.4rem; }
.hero-aside p { margin: .5rem 0; font-size: .94rem; }
.hero-aside strong { display: block; font-size: 1rem; }
.hero-aside a { display: inline-block; margin-top: .8rem; }
.cta-group { display: flex; gap: .8rem; flex-wrap: wrap; }
.btn { display: inline-block; padding: .7rem 1.25rem; border: 1px solid var(--line); border-radius: 5px; text-decoration: none; font-weight: 600; }
.btn-primary { background: var(--blue); color: var(--surface); border-color: var(--blue); }
:root[data-theme="dark"] .btn-primary { color: var(--paper); }
.btn-secondary { color: var(--ink); background: var(--surface); }
.section-title { font-size: clamp(1.8rem, 3vw, 2.4rem); line-height: 1.2; margin: 0 0 1.3rem; letter-spacing: -.035em; }
.section-intro { max-width: 70ch; color: var(--slate); margin: 0 0 2.4rem; }
.about-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 4rem; }
.about-content p { margin-top: 0; max-width: 65ch; }
h3 { font-size: 1.14rem; line-height: 1.35; margin: 0 0 .6rem; }
.skills-list { display: grid; grid-template-columns: 110px 1fr; gap: .85rem 1rem; margin: 0; font-size: .94rem; }
.skills-list dt { font-weight: 650; color: var(--teal); }
.skills-list dd { margin: 0; color: var(--slate); }
.projects-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.4rem; align-items: start; }
.project-card { padding: 1.6rem; background: var(--surface); border: 1px solid var(--line); border-radius: 7px; min-width: 0; }
.project-header { display: flex; gap: 1rem; align-items: center; margin-bottom: .9rem; }
.project-icon { color: var(--teal); font-size: 1.3rem; width: 27px; flex-shrink: 0; }
.project-icon img { width: 27px; height: 27px; }
.project-title { font-size: 1.25rem; margin-bottom: .3rem; }
.project-meta { display: flex; flex-wrap: wrap; gap: .2rem .65rem; color: var(--slate); font-size: .8rem; }
.project-description { font-size: .93rem; margin: .8rem 0; }
.project-tags { display: flex; flex-wrap: wrap; gap: .35rem .8rem; margin: .9rem 0; }
.project-tag { color: var(--teal); font-size: .78rem; }
.project-links { display: flex; flex-wrap: wrap; gap: .6rem 1.1rem; margin: 1rem 0; font-size: .86rem; }
.project-link { text-decoration: none; }
.project-link:hover { text-decoration: underline; }
.project-link i { margin-right: .3rem; }
.project-details { border-top: 1px solid var(--line); padding-top: .8rem; font-size: .88rem; }
summary { color: var(--blue); cursor: pointer; font-weight: 600; padding: .2rem 0; }
.project-details ul { padding-left: 1.2rem; }
.project-details li { margin: .45rem 0; }
.project-details > :not(summary) { margin-top: 1rem; }
.timeline { display: grid; gap: 1.8rem; }
.timeline-item { border-left: 2px solid var(--line); padding: 0 0 0 1.5rem; }
.timeline-content { display: grid; grid-template-columns: 260px 1fr; column-gap: 2.5rem; }
.timeline-title, .timeline-org, .timeline-date { grid-column: 1; margin: 0 0 .5rem; }
.timeline-org { color: var(--teal); font-size: .93rem; }
.timeline-date { color: var(--slate); font-size: .82rem; }
.timeline-description { grid-column: 2; grid-row: 1 / span 3; margin: 0; font-size: .94rem; max-width: 75ch; }
.education-grid, .principles-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem 3rem; }
.education-school { color: var(--teal); margin: .3rem 0; }
.education-year { color: var(--slate); font-size: .85rem; margin: .3rem 0; }
.education-description, .principles-grid p { font-size: .94rem; margin-bottom: 0; }
.credentials-details { margin-top: 1rem; border-top: 1px solid var(--line); padding-top: .6rem; font-size: .9rem; overflow-wrap: anywhere; }
.credentials-details summary { min-height: 44px; padding-block: .5rem; }
.credentials-list { margin: .8rem 0 0; padding-left: 1.2rem; }
.credentials-list li { margin-block: .65rem; }
.writing-list { display: grid; gap: 1rem; }
.writing-item { display: grid; grid-template-columns: 1fr 2fr; gap: 2rem; border-bottom: 1px solid var(--line); padding: .7rem 0 1.4rem; }
.writing-item h3 { margin: 0; }
.writing-item p { margin: 0; color: var(--slate); }
.contact-container { display: grid; grid-template-columns: 1.2fr 1fr; gap: 4rem; }
.contact-description { font-size: 1.1rem; margin: 0; max-width: 55ch; }
.contact-methods { display: grid; gap: .6rem; }
.contact-method { display: flex; gap: 1rem; align-items: baseline; }
.contact-label { width: 65px; margin: 0; font-weight: 600; }
.contact-link { overflow-wrap: anywhere; font-size: .88rem; }
.contact-icon, .contact-cta { display: none; }
.institution-note { color: var(--slate); font-size: .8rem; max-width: 80ch; margin-top: 2rem; }
footer { border-top: 1px solid var(--line); padding: 2rem 0; color: var(--slate); font-size: .85rem; }
.footer-content { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem; }
.footer-links { display: flex; gap: 1rem; flex-wrap: wrap; }
code { font-family: ui-monospace, monospace; font-size: .9em; overflow-wrap: anywhere; }
@media (max-width: 1000px) {
  .site-nav { gap: 1rem; flex-wrap: wrap; padding-block: .8rem; }
  .logo span { display: none; }
  .nav-links { gap: 1rem; }
  .hero-grid { grid-template-columns: 1fr 210px; gap: 2rem; }
}
@media (max-width: 760px) {
  .container, .site-nav, .footer-content { width: calc(100% - 36px); }
  .site-nav { min-height: 70px; gap: .6rem; }
  .site-controls { margin-left: auto; }
  .control-button { font-size: 0; width: 44px; padding: 0; }
  .control-button::before { content: '◐'; font-size: 1.25rem; }
  .nav-links { order: 3; flex-basis: 100%; flex-wrap: wrap; justify-content: space-between; margin: .5rem 0 0; }
  :root[data-enhanced="true"] .menu-button { display: block; }
  :root[data-enhanced="true"] .nav-links[data-open="false"] { display: none; }
  .nav-link { display: block; padding: .5rem .3rem; }
  .hero { padding: 3.5rem 0; }
  .hero-grid, .about-grid, .contact-container { grid-template-columns: 1fr; gap: 2rem; }
  .hero-aside { margin-top: .4rem; }
  .hero-aside strong { display: block; }
  .hero-aside p { margin: .2rem 0; }
  section { padding: 3rem 0; }
  .projects-grid, .education-grid, .principles-grid { grid-template-columns: 1fr; }
  .project-card { padding: 1.2rem; }
  .timeline-content { display: block; }
  .timeline-description { margin-top: .8rem; }
  .writing-item { grid-template-columns: 1fr; gap: .5rem; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

.portfolio-subheading { margin-top: 2.8rem; margin-bottom: 1.2rem; }
.architecture-cases { margin-top: 1.2rem; }
.architecture-case .institution-note { margin-top: 1rem; }

/* Connected paths and case-study reading views. */
:root { --decision: #9a6700; }
:root[data-theme="dark"] { --decision: #e8bb6b; }
.paths-heading { display: grid; grid-template-columns: 1fr 1fr; column-gap: 3rem; align-items: start; }
.path-navigation { display: flex; flex-wrap: wrap; gap: .65rem; margin: .5rem 0 1rem; }
.path-choice { display: inline-block; padding: .6rem .9rem; min-height: 44px; border: 1px solid var(--line); background: var(--surface); border-radius: 5px; color: var(--ink); font-size: .91rem; text-decoration: none; }
.path-choice[aria-current="location"] { border-color: var(--teal); background: var(--teal); color: var(--surface); }
:root[data-theme="dark"] .path-choice[aria-current="location"] { color: var(--paper); }
.path-status { color: var(--slate); font-size: .9rem; margin: 1rem 0; }
.map-viewport { overflow-x: auto; padding: .4rem 0; }
.portfolio-map { width: 100%; min-width: 860px; height: auto; display: block; }
.portfolio-map text { font: 19px -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; fill: var(--ink); }
.map-path-node { fill: var(--surface); stroke: var(--teal); stroke-width: 1.5; }
.map-project-node { fill: var(--surface); stroke: var(--line); stroke-width: 1.5; }
.map-connection { fill: none; stroke: var(--line); stroke-width: 1.2; }
.portfolio-map a:hover rect, .portfolio-map a:focus rect { stroke: var(--blue); stroke-width: 2.5; }
.map-connection[data-path-match="true"] { stroke: var(--teal); stroke-width: 3; }
.portfolio-map a[data-path-match="true"] rect { stroke: var(--teal); stroke-width: 2.5; }
.path-index { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2rem; margin-top: 2rem; }
.path-route { border-top: 2px solid var(--line); padding-top: 1rem; scroll-margin-top: 8rem; }
.path-route[data-selected="true"] { border-color: var(--teal); }
.path-route h3 { font-size: 1.05rem; }
.path-route p { color: var(--slate); font-size: .88rem; }
.path-route ul { padding-left: 1rem; font-size: .86rem; }
.path-route li { margin: .35rem 0; }
.project-card[data-path-match="true"] { border-color: var(--teal); border-left-width: 4px; }
.case-directory { margin: 0 0 3rem; border-left: 3px solid var(--teal); padding-left: 1.5rem; }
.case-directory p { max-width: 70ch; }
.case-directory ul { display: grid; grid-template-columns: 1fr 1fr; column-gap: 3rem; padding: 0; list-style: none; }
.case-directory li { margin: .6rem 0; }
.case-directory li span { display: block; color: var(--slate); font-size: .78rem; }
.case-entry-link { margin: .35rem 0; font-size: .86rem; }
.case-heading { padding-block: 3rem 2.5rem; }
.breadcrumbs { color: var(--slate); font-size: .87rem; margin-bottom: 2rem; overflow-wrap: anywhere; }
.case-heading h1 { font-size: clamp(2.2rem, 4.5vw, 3.6rem); max-width: 24ch; letter-spacing: -.04em; }
.case-meta { color: var(--slate); font-size: .9rem; margin: 0 0 .7rem; }
.case-role { font-weight: 600; max-width: 75ch; }
.case-summary { font-size: 1.15rem; line-height: 1.65; max-width: 70ch; color: var(--slate); }
.path-labels, .case-actions { display: flex; flex-wrap: wrap; gap: .65rem 1rem; margin-top: 1.5rem; }
.path-label { font-size: .85rem; }
.case-actions .btn { min-height: 44px; }
.case-toc { display: flex; flex-wrap: wrap; gap: .75rem 1.25rem; padding-block: 1.2rem; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); font-size: .9rem; }
.case-section { padding: 3.5rem 0; }
.case-section h2, .case-support h2, .related-cases h2 { max-width: 42ch; font-size: clamp(1.65rem, 3vw, 2.1rem); line-height: 1.25; letter-spacing: -.025em; margin-top: 0; }
.case-prose { max-width: 75ch; font-size: 1.03rem; }
.case-prose li { margin: .6rem 0; }
#decisions .case-prose li::marker { color: var(--decision); }
.case-prose p { margin-block: 1rem; }
.case-support { padding: 3rem 0; border-top: 1px solid var(--line); }
.case-question { max-width: 75ch; padding: 1rem 0; border-bottom: 1px solid var(--line); }
.case-question p { margin: .9rem 0; }
.source-list { padding-left: 1.2rem; max-width: 78ch; }
.source-list li { margin: 1rem 0; overflow-wrap: anywhere; }
.source-note { color: var(--slate); font-size: .88rem; margin: .3rem 0; }
.related-cases { padding-block: 2rem 3rem; display: flex; flex-wrap: wrap; gap: 1rem 2rem; }
.related-cases h2 { width: 100%; margin-bottom: 0; }
.diagram-view-nav { display: flex; flex-wrap: wrap; gap: .7rem 1.2rem; margin-block: 1.6rem; font-size: .9rem; }
.architecture-diagram { margin: 2rem 0 2.5rem; scroll-margin-top: 8rem; }
.architecture-diagram figcaption { max-width: 80ch; }
.architecture-diagram figcaption p { color: var(--slate); font-size: .95rem; }
.diagram-controls { display: flex; align-items: center; flex-wrap: wrap; gap: .5rem; margin: 1rem 0; }
.diagram-controls button, .presenter-controls button { min-height: 44px; padding: .5rem .8rem; background: var(--surface); border: 1px solid var(--line); border-radius: 4px; color: var(--ink); font-size: .9rem; }
.diagram-controls button[aria-pressed="true"] { border-color: var(--teal); }
.diagram-controls [data-zoom-status] { color: var(--slate); font-size: .85rem; }
.diagram-viewport { overflow: auto; border: 1px solid var(--line); background: #fff; max-height: 80vh; }
.diagram-canvas { width: 100%; min-width: 1160px; }
.diagram-canvas svg, .diagram-canvas img { display: block; width: 100%; height: auto; }
.diagram-download { font-size: .86rem; }
.architecture-diagram[data-highlight-flows="true"] svg [data-flow], .architecture-diagram[data-highlight-flows="true"] svg path[marker-end], .architecture-diagram[data-highlight-flows="true"] svg line[marker-end], .architecture-diagram[data-highlight-flows="true"] svg polyline[marker-end] { filter: drop-shadow(0 0 2px #147d83); stroke-width: 4px; }
.presenter-controls { position: sticky; top: 82px; z-index: 8; background: var(--paper); border-bottom: 1px solid var(--line); padding: .8rem max(18px, calc((100vw - 1120px) / 2)); display: flex; align-items: center; flex-wrap: wrap; gap: .6rem; }
.presenter-controls [data-presenter-status] { flex: 1; min-width: 150px; padding-inline: .6rem; font-size: .9rem; }
.presenter-controls button:disabled { opacity: .5; cursor: default; }
body[data-presenting="true"] .case-heading, body[data-presenting="true"] .case-toc, body[data-presenting="true"] .case-support, body[data-presenting="true"] .related-cases, body[data-presenting="true"] footer { display: none; }
body[data-presenting="true"] .case-section { border: 0; min-height: calc(100vh - 170px); padding-top: 2.5rem; }
.library-list { padding-bottom: 3rem; }
.library-document { display: grid; grid-template-columns: 1fr 1.5fr; gap: 3rem; padding: 2rem 0; border-top: 1px solid var(--line); }
.library-document h2 { font-size: 1.35rem; line-height: 1.4; }
.library-document p { margin-top: 0; max-width: 70ch; }
@media (max-width: 1000px) {
  .path-index { grid-template-columns: 1fr 1fr; }
  .presenter-controls { top: 90px; }
}
@media (max-width: 760px) {
  .paths-heading, .path-index, .case-directory ul, .library-document { grid-template-columns: 1fr; gap: 1rem; }
  .map-viewport { margin-inline: -18px; padding-inline: 18px; }
  .path-index { margin-top: 1rem; }
  .case-heading { padding-block: 2rem; }
  .case-summary { font-size: 1.05rem; }
  .case-toc { gap: .8rem 1rem; }
  .case-section, .case-support { padding-block: 2.5rem; }
  .presenter-controls { top: 70px; }
  .presenter-controls [data-presenter-status] { flex-basis: 100%; order: -1; padding: 0; }
  .diagram-viewport { max-height: 70vh; }
  .library-document { padding-block: 1.5rem; }
}
@media print {
  :root, :root[data-theme="dark"] { --ink: #142b3b; --paper: #fff; --surface: #fff; --slate: #546576; --line: #d4dfe7; --teal: #147d83; --blue: #355ad8; }
  header, .skip-link, .site-controls, .case-actions, .case-toc, .presenter-controls, .diagram-controls, .diagram-view-nav, .diagram-download, .path-navigation, [data-path-reset], footer { display: none !important; }
  .container { width: 100%; }
  body[data-presenting="true"] .case-heading, body[data-presenting="true"] .case-support, body[data-presenting="true"] .related-cases, [data-case-section][hidden] { display: block !important; }
  body[data-presenting="true"] .case-section, .case-section, .case-support { min-height: 0; padding-block: 1.2rem; }
  .case-heading { padding-block: 0 1rem; }
  .case-heading h1 { font-size: 26pt; }
  .case-section h2 { font-size: 19pt; }
  .diagram-viewport { overflow: visible; max-height: none; border: 0; }
  .diagram-canvas { min-width: 0 !important; width: 100% !important; }
  .architecture-diagram { break-inside: avoid; }
  .map-viewport { overflow: visible; }
  .portfolio-map { min-width: 0; }
  .case-question > * { display: block; }
  a { color: var(--ink); }
}

body[data-presenting="true"] .case-section > .container { display: flex; flex-direction: column; }
body[data-presenting="true"] .case-section .case-prose { order: 5; }
body[data-presenting="true"] .diagram-view-nav { order: 1; margin-block: .3rem .7rem; }
body[data-presenting="true"] .architecture-diagram { order: 2; margin-block: .5rem 1.5rem; display: flex; flex-direction: column; }
body[data-presenting="true"] .architecture-diagram figcaption { display: contents; }
body[data-presenting="true"] .architecture-diagram figcaption h3 { order: 0; margin-bottom: .3rem; }
body[data-presenting="true"] .architecture-diagram figcaption p { order: 3; max-width: 80ch; }
body[data-presenting="true"] .architecture-diagram .diagram-controls { order: 1; margin-block: .4rem .7rem; }
body[data-presenting="true"] .architecture-diagram .diagram-viewport { order: 2; max-height: calc(100vh - 290px); }
body[data-presenting="true"] .architecture-diagram .diagram-download { order: 4; }
@media print {
  body[data-presenting="true"] .case-section > .container { display: block; }
  body[data-presenting="true"] .architecture-diagram { display: block; }
  body[data-presenting="true"] .architecture-diagram figcaption { display: block; }
  body[data-presenting="true"] .architecture-diagram .diagram-viewport { max-height: none; }
}
.diagram-actions { display: flex; flex-wrap: wrap; align-items: center; gap: .6rem 1.1rem; margin-block: .7rem; }
.diagram-actions .diagram-controls { margin: 0; }
.diagram-open { font-size: .87rem; }
body[data-presenting="true"] .diagram-view-nav[data-view-count="1"] { display: none; }
body[data-presenting="true"] .architecture-diagram .diagram-actions { order: 1; margin-block: .3rem .7rem; }
body[data-presenting="true"] .case-section { padding-top: 1.5rem; }
@media print { .diagram-actions { display: none !important; } }

.path-reset-button { min-height: 44px; font-size: .9rem; margin-block: .5rem; }