/* Original site styling; palette values are inspired by the owner-approved DavidsCockpit tokens. */
@font-face {
  font-family: "Oxanium";
  src: url("../fonts/oxanium/Oxanium-Variable.ttf") format("truetype");
  font-style: normal;
  font-weight: 200 800;
  font-display: swap;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body,
h1,
h2,
h3,
p {
  margin: 0;
}

:root {
  color-scheme: dark;
  --color-ink: #061923;
  --color-navy: #0b2b3d;
  --color-raised: #123e56;
  --color-teal: #2b7e95;
  --color-accent-text: #75c6d0;
  --color-focus: #75c6d0;
  --color-cyan: #75c6d0;
  --color-ivory: #f7f0df;
  --color-paper: #0a283b;
  --color-gold: #e9c788;
  --color-muted-on-dark: #b8d4d7;
  --color-muted-on-light: var(--color-muted-on-dark);
  --color-line-on-dark: #38677a;
  --color-line-on-light: var(--color-line-on-dark);
  --page-bg: var(--color-ink);
  --page-fg: var(--color-ivory);
  --content-muted: var(--color-muted-on-dark);
  --content-border: var(--color-line-on-dark);
  --content-accent: var(--color-cyan);
  --font-ui: "Segoe UI", Arial, sans-serif;
  --font-display: "Oxanium", var(--font-ui);
  --content-width: 74rem;
  --section-space: clamp(4rem, 8vw, 7rem);
}

body {
  background: var(--page-bg);
  color: var(--page-fg);
  font-family: var(--font-ui);
  font-size: 1rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-underline-offset: 0.2em;
}

a:hover {
  text-decoration-thickness: 0.12em;
}

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 4px;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.08;
}

h1 {
  font-size: clamp(2.7rem, 6.5vw, 5.8rem);
}

h2 {
  font-size: clamp(2.1rem, 4.2vw, 3.4rem);
}

p,
.paragraph--readable {
  max-inline-size: 68ch;
}

.paragraph--full {
  max-inline-size: none;
}

.page-layout-full,
#quarto-content,
main {
  inline-size: 100%;
}

#quarto-content {
  padding: 0;
}

.site-header {
  background: rgb(6 25 35 / 94%);
  border-block-end: 1px solid var(--color-line-on-dark);
  inset-block-start: 0;
  position: sticky;
  color: var(--color-ivory);
  z-index: 5;
}

.site-header__inner {
    align-items: center;
    display: grid;
    gap: 1rem;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    margin-inline: auto;
    max-inline-size: var(--content-width);
    min-block-size: 5rem;
    padding-inline: 1.5rem;
}

.site-wordmark {
    align-items: center;
    color: var(--color-ivory);
    display: flex;
    gap: 0.65rem;
    grid-column: 2;
    grid-row: 1;
    justify-self: center;
    text-decoration: none;
}

.site-menu-toggle {
  background: transparent;
  border: 0;
  border-radius: 0.5rem;
  color: var(--color-ivory);
  cursor: pointer;
  grid-column: 1 / -1;
  grid-row: 1;
  justify-self: center;
  padding: 0.25rem;
}

.site-menu-toggle[hidden] {
  display: none;
}

.site-header[data-compact-menu] .site-wordmark {
  display: none;
}

.site-header[data-compact-menu]:not([data-menu-open]) .site-nav {
  display: none;
}

.site-header[data-compact-menu][data-menu-open] .site-nav {
  align-items: stretch;
  display: flex;
  flex-direction: column;
  grid-column: 1 / -1;
  inline-size: 100%;
  justify-self: stretch;
  gap: 0;
}

.site-header[data-compact-menu][data-menu-open] .site-nav:not(.site-nav--right) {
  grid-row: 2;
}

.site-header[data-compact-menu][data-menu-open] .site-nav--right {
  grid-row: 3;
}

.site-header[data-compact-menu] .site-nav a {
  border-block-start: 1px solid var(--color-line-on-dark);
  font-size: 1rem;
  padding: 0.75rem 1rem;
  text-align: center;
}

.site-wordmark__mark {
  align-items: center;
  display: inline-flex;
  block-size: 3rem;
  inline-size: 3rem;
  justify-content: center;
  position: relative;
}

/* Original CSS orbit retained for the commented _backup logo spans in both page headers. */
.site-wordmark__mark--backup::after {
  border: 1px solid rgb(117 198 208 / 65%);
  border-radius: 50%;
  content: "";
  inset: 0;
  position: absolute;
  transform: rotate(-30deg) scaleX(0.72);
}

.site-wordmark__mark img {
  display: block;
  block-size: 3rem;
  inline-size: 3rem;
  position: relative;
  z-index: 1;
}

.site-nav {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem clamp(0.35rem, 1.3vw, 1.25rem);
    grid-column: 1;
    grid-row: 1;
    justify-self: start;
}

.site-nav--right {
    grid-column: 3;
    justify-self: end;
}

.site-nav a {
    color: var(--color-muted-on-dark);
    font-size: 0.84rem;
    font-weight: 600;
    min-block-size: 2.75rem;
    padding: 0.65rem 0.25rem;
    text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
    color: var(--color-ivory);
}

.site-nav a[aria-current="location"] {
color: var(--color-gold);
text-decoration: underline;
text-decoration-thickness: 2px;
text-underline-offset: 0.6rem;
}

.hero__disciplines {
display: flex;
justify-content: center;
flex-wrap: wrap;
gap: 0.65rem;
list-style: none;
margin: 1.75rem 0 0;
padding: 0;
}

.hero__disciplines li {
border: 1px solid var(--color-line-on-dark);
border-radius: 2rem;
color: var(--color-muted-on-dark);
font-size: 0.8rem;
padding: 0.35rem 0.85rem;
}

.section-lede {
color: var(--content-muted);
font-size: 1.05rem;
margin-block-start: 1.25rem;
}

.toolkit,
.training-summary {
  border-block-start: 1px solid var(--color-line-on-dark);
  margin-block-start: 2.5rem;
  padding-block-start: 2rem;
}

.toolkit h3,
.training-summary h3 {
  font-size: 1.35rem;
  line-height: 1.4;
}

.toolkit > p,
.training-summary p {
  color: var(--content-muted);
  margin-block-start: 0.75rem;
}

.toolkit__groups {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-block-start: 1.5rem;
  margin-block-end: 0;
}

.toolkit__groups dt {
  color: var(--color-cyan);
  font-weight: 600;
  margin-block-end: 0.5rem;
}

.toolkit__groups dd {
  color: var(--content-muted);
  font-size: 0.95rem;
  margin: 0;
}

.toolkit__matrix {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2.5rem 3rem;
  margin-block-start: 2rem;
}

.toolkit__column {
  min-inline-size: 0;
  border-block-start: 2px solid var(--color-line-on-dark);
  padding-block-start: 1rem;
}

.toolkit__column h4 {
  color: var(--color-ivory);
  font-family: var(--font-display);
  font-size: 1.15rem;
  line-height: 1.5;
  margin: 0 0 1rem;
}

.toolkit__column dl {
  margin: 0;
}

.toolkit__column dl > div {
  border-block-start: 1px solid var(--color-line-on-dark);
  padding-block: 0.85rem;
}

.toolkit__column dt {
  color: var(--color-cyan);
  font-size: 0.95rem;
  font-weight: 600;
}

.toolkit__column dd {
  color: var(--content-muted);
  font-size: 0.95rem;
  line-height: 1.75;
  margin: 0.35rem 0 0;
}

.practice-focus {
  border-block-start: 1px solid var(--color-line-on-dark);
  margin-block-start: 2rem;
  padding-block-start: 1.5rem;
}

.experience-item__body {
  color: var(--content-muted);
  font-size: 0.96rem;
}

.experience-item__body ul {
  margin: 1rem 0 0;
  padding-inline-start: 1.25rem;
}

.experience-item__body li + li {
  margin-block-start: 0.65rem;
}

.profile-portrait {
inline-size: min(100%, 22rem);
margin: 0;
}

.profile-portrait img {
aspect-ratio: 1194 / 1481;
border: 1px solid var(--color-line-on-dark);
border-radius: 1rem;
display: block;
inline-size: 100%;
block-size: auto;
object-fit: contain;
}

.profile-portrait figcaption {
color: var(--color-ivory);
font-size: 0.95rem;
margin-block-start: 1rem;
}

.profile-portrait figcaption span {
color: var(--content-muted);
display: block;
font-size: 0.8rem;
margin-block-start: 0.25rem;
}

.approach-band {
background: linear-gradient(110deg, rgb(6 25 35 / 95%), rgb(10 40 59 / 91%)),
  url("../images/systems-architecture-study.svg") center / cover;
border-block: 1px solid var(--color-line-on-dark);
padding-block: var(--section-space);
}

.approach-band__lede {
color: var(--content-muted);
margin-block-start: 1.25rem;
}

.approach-steps {
display: grid;
gap: 2rem;
grid-template-columns: repeat(4, minmax(0, 1fr));
list-style: none;
margin: 3rem 0 0;
padding: 0;
}

.approach-steps li {
border-block-start: 1px solid var(--color-line-on-dark);
padding-block-start: 1.5rem;
}

.approach-steps li > span {
color: var(--color-gold);
font-family: var(--font-display);
font-size: 2rem;
}

.approach-steps h3 {
font-size: 1.15rem;
line-height: 1.4;
margin-block: 0.75rem;
}

.approach-steps p {
color: var(--content-muted);
font-size: 0.95rem;
}

.project-filters:not([hidden]) {
display: flex;
flex-wrap: wrap;
gap: 0.6rem;
margin-block-start: 2rem;
}

.project-filters button {
background: transparent;
border: 1px solid var(--color-line-on-dark);
border-radius: 2rem;
color: var(--content-muted);
cursor: pointer;
font: inherit;
font-size: 0.85rem;
min-block-size: 2.75rem;
padding: 0.55rem 1rem;
}

.project-filters button[aria-pressed="true"] {
background: var(--color-gold);
border-color: var(--color-gold);
color: var(--color-ink);
}

.project-filter-status {
color: var(--content-muted);
font-size: 0.85rem;
margin-block-start: 0.75rem;
}

.project[hidden] {
display: none;
}

.project__image {
aspect-ratio: 16 / 9;
border-radius: 0.5rem;
display: block;
margin-block-end: 1.5rem;
overflow: hidden;
position: relative;
}

.project__image img {
block-size: 100%;
inline-size: 100%;
object-fit: cover;
transition: transform 250ms ease;
}

.project__image:hover img {
transform: scale(1.04);
}

.project__image span {
background: var(--color-ink);
border: 1px solid var(--color-line-on-dark);
border-radius: 2rem;
bottom: 0.75rem;
color: var(--color-ivory);
font-size: 0.8rem;
padding: 0.4rem 0.75rem;
position: absolute;
right: 0.75rem;
}

.image-viewer {
background: var(--color-ink);
border: 1px solid var(--color-line-on-dark);
border-radius: 1rem;
color: var(--color-ivory);
inline-size: min(64rem, calc(100% - 2rem));
max-block-size: 90vh;
padding: 3.5rem 1.5rem 1.5rem;
}

.image-viewer::backdrop {
background: rgb(0 0 0 / 85%);
}

.image-viewer figure {
margin: 0;
}

.image-viewer img {
display: block;
inline-size: 100%;
max-block-size: 68vh;
object-fit: contain;
}

.image-viewer figcaption {
margin-block-start: 1rem;
}

.image-viewer__close {
background: var(--color-paper);
border: 1px solid var(--color-line-on-dark);
border-radius: 50%;
color: var(--color-ivory);
cursor: pointer;
font-size: 1.5rem;
block-size: 2.75rem;
inline-size: 2.75rem;
position: absolute;
right: 0.75rem;
top: 0.5rem;
}

.site-wordmark:hover .site-wordmark__mark--backup::after {
    transform: rotate(30deg) scaleX(0.72);
    transition: transform 250ms ease-out;
}

.testimonial-controls:not([hidden]) {
  align-items: center;
  display: grid;
  gap: 1rem;
  grid-template-columns: 3rem auto 3rem;
  justify-content: center;
  margin-block-start: 2rem;
}

.testimonial-control {
  background: var(--color-paper);
  border: 1px solid var(--color-line-on-dark);
  border-radius: 50%;
  color: var(--color-cyan);
  cursor: pointer;
  font: inherit;
  block-size: 3rem;
  inline-size: 3rem;
}

.testimonial-control:hover {
  border-color: var(--color-cyan);
}

.testimonial-playback {
  background: var(--color-paper);
  border: 1px solid var(--color-line-on-dark);
  border-radius: 0.5rem;
  color: var(--color-cyan);
  cursor: pointer;
  font: inherit;
  min-block-size: 3rem;
  padding: 0.65rem;
  inline-size: 3rem;
  grid-column: 1 / -1;
  justify-self: center;
}

.playback-icon {
  display: block;
  inline-size: 1.5rem;
  block-size: 1.5rem;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.playback-icon[hidden] {
  display: none;
}

.testimonial-playback:disabled {
  color: var(--content-muted);
  cursor: default;
}

.institution-identity {
  align-items: center;
  display: flex;
  gap: 0.75rem;
  margin-block-end: 1rem;
  color: var(--color-ivory);
  font-weight: 600;
}

.institution-identity img {
  block-size: 3.5rem;
  inline-size: 3.5rem;
  flex: 0 0 3.5rem;
  border-radius: 0.5rem;
  object-fit: contain;
}

.institution-identity .institution-logo--wide {
  inline-size: 7rem;
  flex-basis: 7rem;
  background: white;
  padding: 0.3rem;
}

.institution-pair {
  display: flex;
  align-items: start;
  gap: 1rem;
}

.institution-pair .institution-identity {
  align-items: start;
  flex: 1;
  min-inline-size: 0;
}

.institution-pair .institution-identity span {
  overflow-wrap: anywhere;
}

.project-video {
  display: block;
  inline-size: 100%;
  max-inline-size: 100%;
  block-size: auto;
  background: var(--color-ink);
  border-radius: 0.5rem;
}

.testimonial-grid[data-carousel] {
  align-items: start;
  block-size: var(--testimonial-height, auto);
  display: flex;
  gap: 1.5rem;
  overflow-x: auto;
  padding-block: 0.5rem 1rem;
  scroll-snap-type: x mandatory;
}

.testimonial-grid[data-carousel] .testimonial {
  flex: 0 0 100%;
  min-block-size: 0;
  scroll-snap-align: start;
}

.testimonial-grid[data-carousel] .testimonial blockquote {
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  inline-size: 100%;
  max-inline-size: none;
  text-align: center;
}

.testimonial-grid[data-carousel] .testimonial figcaption {
  justify-content: center;
}

.experience-item,
.project,
.testimonial,
.skill {
  scroll-margin-block-start: 5rem;
}

.experience-list {
  border-inline-start: 1px solid var(--color-line-on-dark);
  margin-inline-start: 0.45rem;
  padding-inline-start: clamp(1.1rem, 3vw, 2.25rem);
}

.education {
  align-items: start;
}

.experience-item {
  border-block-start: 1px solid var(--color-line-on-dark);
  position: relative;
}

.experience-item::before {
  background: var(--color-gold);
  border: 3px solid var(--color-navy);
  border-radius: 50%;
  block-size: 0.7rem;
  content: "";
  inline-size: 0.7rem;
  inset-block-start: 2rem;
  inset-inline-start: calc(-1 * clamp(1.1rem, 3vw, 2.25rem) - 0.45rem);
  position: absolute;
}

.testimonials {
    padding-block: clamp(4rem, 9vw, 8rem);
    scroll-margin-block-start: 5rem;
}

.testimonials__intro {
    align-items: end;
    display: grid;
    gap: 2rem;
    grid-template-columns: minmax(0, 1.1fr) minmax(15rem, 0.7fr);
    margin-block-start: 2rem;
}

.testimonials__intro h2 {
    max-inline-size: 17ch;
}

.testimonials__intro > p {
    color: var(--content-muted);
    font-size: 1.05rem;
  grid-column: 1 / -1;
}

.testimonial-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-block-start: 3rem;
}

.testimonial {
    background: linear-gradient(145deg, rgb(18 62 86 / 38%), transparent 78%), var(--color-paper);
    border: 1px solid var(--color-line-on-dark);
    border-radius: 0.8rem;
    display: flex;
    flex-direction: column;
    margin: 0;
    min-inline-size: 0;
    padding: clamp(1.25rem, 3vw, 2rem);
}

.testimonial blockquote {
    color: var(--color-ivory);
    font-family: var(--font-ui);
    font-size: clamp(1rem, 1.35vw, 1.15rem);
    line-height: 1.55;
    margin: 0 0 1.5rem;
    max-inline-size: 58ch;
}

.testimonial figcaption {
    align-items: center;
    border-block-start: 1px solid var(--color-line-on-dark);
    display: flex;
    gap: 0.85rem;
    margin-block-start: 0;
    padding-block-start: 1rem;
}

.testimonial figcaption > img {
    aspect-ratio: 1;
    border: 1px solid var(--color-line-on-dark);
    border-radius: 50%;
    flex: 0 0 5rem;
    inline-size: 5rem;
    block-size: 5rem;
    min-inline-size: 5rem;
    max-inline-size: 5rem;
    object-fit: cover;
}

.testimonial figcaption > span {
    display: grid;
    gap: 0.2rem;
}

.testimonial figcaption > .testimonial__organization {
  background: white;
  object-fit: contain;
  padding: 0.2rem;
}

.testimonial figcaption > .testimonial__organization--wide {
  aspect-ratio: auto;
  border-radius: 0.5rem;
  flex-basis: 7rem;
  inline-size: 7rem;
  min-inline-size: 7rem;
  max-inline-size: 7rem;
  block-size: 4rem;
}

.testimonial figcaption strong {
    font-size: 0.94rem;
}

.testimonial figcaption span span {
    color: var(--color-gold);
    font-size: 0.82rem;
}

[data-reveal] {
    transition: opacity 480ms ease, transform 480ms ease;
}

[data-reveal-pending] {
    opacity: 0;
    transform: translateY(0.75rem);
}

[data-reveal-pending]:focus-within {
  opacity: 1;
  transform: none;
}

[data-revealed] {
    opacity: 1;
    transform: translateY(0);
}

@keyframes wordmark-orbit {
    to { transform: rotate(330deg) scaleX(0.72); }
}

@media (prefers-reduced-motion: no-preference) {
    .site-wordmark__mark--backup::after {
      animation: wordmark-orbit 16s linear infinite;
    }
}

@media (max-width: 760px) {
    .toolkit__groups {
      grid-template-columns: 1fr;
    }
    .approach-steps {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .site-header__inner {
      gap: 0.4rem 0.75rem;
      grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
      padding-block: 0.65rem;
    }

    .site-wordmark {
      grid-column: 1 / -1;
      grid-row: 1;
    }

    .site-nav,
    .site-nav--right {
      grid-row: 2;
      justify-self: center;
      max-inline-size: 100%;
      min-inline-size: 0;
    }

    .site-nav {
      grid-column: 1;
    }

    .site-nav--right {
      grid-column: 2;
    }

    .site-nav a {
      font-size: 0.8rem;
      padding-inline: 0.2rem;
    }

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

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

    .experience-item,
    .project,
    .testimonial {
      scroll-margin-block-start: 1rem;
    }
}

@media (max-width: 480px) {
    .site-header__inner {
      gap: 0.25rem;
      padding-inline: 0.55rem;
    }

    .site-nav {
      gap: 0.1rem;
    }

    .site-nav a {
      font-size: 0.75rem;
      padding-inline: 0.15rem;
    }

}

@media (prefers-reduced-motion: reduce) {
    .site-wordmark__mark--backup::after {
      animation: none;
    }

    .site-wordmark:hover .site-wordmark__mark--backup::after {
      transition: none;
    }

    [data-reveal] {
      transition: none;
    }
}

@media (forced-colors: active) {
    .testimonial {
      background: Canvas;
      border-color: CanvasText;
      color: CanvasText;
    }

    .testimonial blockquote,
    .testimonial figcaption strong {
      color: CanvasText;
    }
}

.site-footer {
    background: var(--color-ink);
    border-block-start: 1px solid var(--color-line-on-dark);
    color: var(--color-muted-on-dark);
    font-size: 0.82rem;
    padding-block: 1.35rem;
  }

  .site-footer__inner {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 1.5rem;
    justify-content: space-between;
  }

  .site-footer a {
    color: var(--color-ivory);
  }

  .section-wrap {
    inline-size: min(var(--content-width), calc(100% - 3rem));
    margin-inline: auto;
  }

  .hero {
    align-items: center;
    background: linear-gradient(120deg, var(--color-ink), var(--color-navy));
    color: var(--color-ivory);
    display: grid;
    isolation: isolate;
    min-block-size: min(52rem, calc(100svh - 4.5rem));
    overflow: hidden;
    padding: clamp(4rem, 10vw, 8rem) max(1.5rem, calc((100% - var(--content-width)) / 2));
    position: relative;
    scroll-margin-block-start: 5rem;
  }

  .hero__content {
    inline-size: min(100%, 58rem);
    margin-inline: auto;
    text-align: center;
    position: relative;
    z-index: 2;
  }

  .hero__name {
    color: var(--color-ivory);
    font-family: var(--font-display);
    font-size: clamp(1rem, 1.8vw, 1.35rem);
    font-weight: 600;
    margin-block-end: 0.5rem;
    text-align: center;
    inline-size: 100%;
    max-inline-size: none;
    margin-inline: auto;
  }

  .hero__art {
    background-image: url("../images/hero-systems-field.svg");
    background-position: center right;
    background-size: cover;
    inset: -1rem;
    opacity: 0.84;
    position: absolute;
    transform: scale(1.02);
    z-index: 0;
  }

  .hero::after {
    background: radial-gradient(ellipse at center, rgb(6 25 35 / 94%) 0%, rgb(6 25 35 / 80%) 55%, rgb(6 25 35 / 60%) 100%);
    content: "";
    inset: 0;
    pointer-events: none;
    position: absolute;
    z-index: 1;
  }

  .hero__art[data-parallax-active] {
    transform: translate3d(0, var(--hero-parallax-y, 0px), 0) scale(1.02);
    will-change: transform;
  }

  .hero__scroll {
    align-items: center;
    bottom: 2rem;
    color: var(--color-muted-on-dark);
    display: flex;
    font-size: 0.78rem;
    gap: 0.65rem;
    inset-inline-start: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
    letter-spacing: 0.08em;
    position: absolute;
    text-decoration: none;
    text-transform: uppercase;
    z-index: 2;
  }

  .hero__scroll span {
    color: var(--color-gold);
    font-size: 1.2rem;
  }

  .intro {
    scroll-margin-block-start: 5rem;
    padding-block: clamp(5rem, 10vw, 9rem) clamp(2.5rem, 5vw, 4rem);
  }

  .intro__grid {
    align-items: start;
    display: grid;
    gap: 2rem clamp(2rem, 6vw, 6rem);
    grid-template-columns: minmax(0, 22rem) minmax(0, 1fr);
    margin-block-start: 2.5rem;
  }

  .intro__heading {
    grid-column: 1 / -1;
  }

  .intro__copy {
    color: var(--content-muted);
    font-size: 1.1rem;
    padding-block-start: 0;
  }

  .intro__copy p + p {
    margin-block-start: 1rem;
  }

  .skills {
    margin-block-start: clamp(4rem, 8vw, 7rem);
  }

  .skills > h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-block: 1.5rem;
  }

  .skill-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-block-start: 2rem;
  }

  .skill {
    background: linear-gradient(135deg, rgb(18 62 86 / 45%), transparent 75%);
    border: 1px solid var(--color-line-on-dark);
    border-radius: 0.75rem;
    padding: 1.5rem;
  }

  .skill h3 {
    font-family: var(--font-ui);
    font-size: 1rem;
    letter-spacing: 0;
    line-height: 1.4;
  }

  .skill p {
    color: var(--content-muted);
    font-size: 0.94rem;
    margin-block-start: 0.65rem;
  }

  .experience-band {
    background:
      linear-gradient(135deg, rgb(18 62 86 / 35%), transparent 55%),
      var(--color-navy);
    scroll-margin-block-start: 5rem;
    color: var(--color-ivory);
    padding-block: clamp(4rem, 8vw, 7rem);
  }

  .experience {
    padding-block: 0;
    scroll-margin-block-start: 5rem;
  }

  .experience > h2 {
    margin-block-start: 1.5rem;
    max-inline-size: 18ch;
  }

  .experience-list {
    margin-block-start: 2.5rem;
  }

  .experience-item {
    border-block-start: 1px solid var(--color-line-on-dark);
    display: grid;
    gap: 1rem clamp(1.5rem, 5vw, 5rem);
    grid-template-columns: minmax(0, 10rem) minmax(0, 1fr);
    padding-block: 1.75rem;
  }

  .experience-item__body {
    grid-column: 2;
  }

  .timeline-date,
  .education-list .timeline-date {
    color: var(--color-gold);
    font-size: 0.84rem;
    font-variant-numeric: tabular-nums;
    grid-column: 1;
    line-height: 1.7;
    padding-block-start: 0.5rem;
  }

  .timeline-date time {
    display: inline-block;
  }

  .experience-item__heading h3 {
    font-family: var(--font-ui);
    font-size: 1.05rem;
    letter-spacing: 0;
    line-height: 1.45;
  }

  .experience-item__heading h3 span {
    color: var(--content-muted);
    font-size: 0.88rem;
    font-weight: 400;
  }

  .experience-item__heading p {
    color: var(--color-gold);
    font-size: 0.84rem;
    margin-block-start: 0.45rem;
  }

  .experience-item > p {
    color: var(--content-muted);
    font-size: 0.96rem;
  }

  .education {
    border-block-start: 1px solid var(--color-line-on-dark);
    display: grid;
    gap: 2rem clamp(1.5rem, 5vw, 5rem);
    grid-template-columns: minmax(0, 1fr);
    margin-block-start: 2rem;
    padding-block-start: 2.5rem;
    scroll-margin-block-start: 5rem;
  }

  .education h3 {
    font-family: var(--font-ui);
    font-size: 1.15rem;
    letter-spacing: 0;
    line-height: 1.45;
    margin-block-start: 1.2rem;
  }

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

  .education-list li {
    border-block-start: 1px solid var(--color-line-on-dark);
    display: grid;
    gap: 0.35rem 1rem;
    grid-template-columns: minmax(0, 10rem) minmax(0, 1fr);
    padding-block: 1rem;
  }

  .education-list li:first-child {
    border-block-start: 0;
  }

  .education-list strong {
    font-size: 0.98rem;
  }

  .education-entry p {
    color: var(--content-muted);
    font-size: 0.92rem;
    margin-block-start: 0.75rem;
  }

  .projects {
    padding-block: clamp(4rem, 9vw, 8rem);
    scroll-margin-block-start: 5rem;
  }

  .projects__intro {
    align-items: end;
    display: grid;
    gap: 2rem;
    grid-template-columns: minmax(0, 1.1fr) minmax(15rem, 0.7fr);
    margin-block-start: 2rem;
  }

  .projects__intro h2 {
    max-inline-size: 17ch;
  }

  .projects__lede {
    color: var(--content-muted);
    font-size: 1.05rem;
    margin-block-start: 1.25rem;
  }

  .project-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-block-start: 3rem;
  }

  .project {
    background: var(--color-paper);
    border: 1px solid var(--color-line-on-dark);
    border-radius: 0.75rem;
    display: flex;
    flex-direction: column;
    min-inline-size: 0;
    overflow: hidden;
    padding: clamp(1.25rem, 3vw, 2rem);
    position: relative;
    isolation: isolate;
  }

  .project--architecture {
    background-image:
      linear-gradient(90deg, var(--color-paper) 0%, rgb(10 40 59 / 96%) 42%, rgb(10 40 59 / 55%) 100%),
      url("../images/systems-architecture-study.svg");
    background-position: center, right center;
    background-size: cover;
  }

  .project--traceability {
    background-image:
      linear-gradient(90deg, var(--color-paper) 0%, rgb(10 40 59 / 96%) 42%, rgb(10 40 59 / 55%) 100%),
      url("../images/model-trace-lines.svg");
    background-position: center, right center;
    background-size: cover;
  }

  .project__number {
    color: var(--color-cyan);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
  }

  .project h3 {
    font-size: clamp(1.45rem, 2.5vw, 2rem);
    margin-block: 1.1rem 0.8rem;
    max-inline-size: 23ch;
  }

  .project > p:not(.project__status) {
    color: var(--content-muted);
    font-size: 0.95rem;
  }

  .project__status {
    border-block-start: 1px solid var(--color-line-on-dark);
    color: var(--color-gold);
    font-size: 0.82rem;
    margin-block-start: auto;
    padding-block-start: 1.25rem;
  }

  .writing-intro {
    background:
      radial-gradient(ellipse at 0% 50%, rgb(18 62 86 / 35%), transparent 34rem),
      var(--color-navy);
    padding-block: clamp(4rem, 8vw, 7rem);
    scroll-margin-block-start: 5rem;
  }

  .writing-intro__grid {
    display: grid;
    gap: clamp(2rem, 7vw, 7rem);
    grid-template-columns: minmax(0, 1fr) minmax(16rem, 0.8fr);
    margin-block-start: 2rem;
  }

  .writing-intro__grid h2 {
    max-inline-size: 14ch;
  }

  .writing-intro__grid > div > p {
    color: var(--content-muted);
    font-size: 1.05rem;
  }

  .writing-intro .text-link {
    color: var(--color-cyan);
  }

  .closing {
    align-items: start;
    background:
      radial-gradient(ellipse at 100% 35%, rgb(18 62 86 / 42%), transparent 36rem);
    display: flex;
    flex-direction: column;
    scroll-margin-block-start: 5rem;
    padding-block: clamp(5rem, 10vw, 9rem);
  }

  .closing > p:not(.eyebrow) {
    color: var(--content-muted);
    margin-block: 1.5rem 2rem;
    inline-size: min(100% - 2rem, 54rem);
    margin-inline: auto;
    max-inline-size: none;
    text-align: center;
  }

  .contact-form {
    background: var(--color-navy);
    border: 1px solid var(--color-line-on-dark);
    border-radius: 1rem;
    display: grid;
    gap: 1.25rem;
    inline-size: min(100% - 2rem, 54rem);
    margin-inline: auto;
    margin-block: 0.5rem 1.5rem;
    padding: clamp(1.1rem, 4vw, 2rem);
  }

  .writing-page {
    min-block-size: 70vh;
    padding-block: clamp(3rem, 7vw, 6rem);
  }

  .writing-page h1 {
    margin-block-start: 1rem;
  }

  .writing-page__lede {
    color: var(--content-muted);
    font-size: 1.1rem;
    margin-block-start: 1.5rem;
  }

  .skip-link {
    background: var(--color-raised);
    border: 2px solid currentColor;
    border-radius: 0.5rem;
    inset-block-start: 0.75rem;
    inset-inline-start: 0.75rem;
    padding: 0.75rem 1rem;
    position: fixed;
    transform: translateY(-150%);
    z-index: 10;
  }

  .skip-link:focus {
    transform: translateY(0);
  }

  .eyebrow {
    color: var(--color-cyan);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    line-height: 1.4;
    margin-block-end: 1rem;
  }

  .eyebrow--ink {
    color: var(--color-accent-text);
  }

  .hero h1 {
    max-inline-size: 20ch;
    margin-inline: auto;
  }

  .hero__content > .eyebrow {
    inline-size: 100%;
    max-inline-size: none;
    margin-inline: auto;
    text-align: center;
  }

  .hero h1 span {
    color: var(--color-gold);
  }

  .hero__lede {
    color: var(--color-muted-on-dark);
    font-size: clamp(1rem, 1.7vw, 1.2rem);
    margin-block-start: 1.5rem;
    max-inline-size: 60ch;
    margin-inline: auto;
  }

  .hero__actions {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    justify-content: center;
    margin-block-start: 2rem;
  }

  .hero__note {
    align-items: center;
    color: var(--color-muted-on-dark);
    display: flex;
    font-size: 0.85rem;
    gap: 0.6rem;
    justify-content: center;
    margin-block-start: 3.25rem;
  }

  .status-dot {
    background: var(--color-cyan);
    border-radius: 50%;
    block-size: 0.5rem;
    inline-size: 0.5rem;
  }

  .button {
    align-items: center;
    border: 1px solid transparent;
    border-radius: 0.9rem;
    display: inline-flex;
    font-size: 0.93rem;
    font-weight: 650;
    gap: 0.65rem;
    justify-content: center;
    min-block-size: 3rem;
    padding: 0.7rem 1.15rem;
    text-decoration: none;
    transition: background-color 180ms ease-out, color 180ms ease-out, transform 180ms ease-out;
  }

  .button:hover {
    transform: translateY(-1px);
  }

  .button:active {
    transform: translateY(0);
  }

  .button--light {
    background: var(--color-gold);
    color: var(--color-ink);
  }

  .button--light:hover {
    background: var(--color-ivory);
  }

  .button--quiet {
    border-color: var(--color-cyan);
    color: var(--color-ivory);
  }

  .button--quiet:hover {
    background: var(--color-raised);
  }

  .button--dark {
    background: var(--color-gold);
    color: var(--color-ink);
  }

  .button--dark:hover {
    background: var(--color-ivory);
  }

  .section-index {
    align-items: center;
    color: var(--content-muted);
    display: flex;
    font-size: 0.73rem;
    font-weight: 650;
    gap: 0.85rem;
    letter-spacing: 0.12em;
  }

  .section-index > span:first-child {
    color: var(--color-accent-text);
    font-variant-numeric: tabular-nums;
  }

  .section-index__line {
    background: var(--color-gold);
    block-size: 1px;
    inline-size: 2.5rem;
  }

  .text-link {
    display: inline-block;
    font-size: 0.9rem;
    font-weight: 650;
    margin-block-start: 1.25rem;
    text-decoration-thickness: 1px;
  }

  .text-link {
    color: var(--content-accent);
  }

  .text-link:hover {
    text-decoration-thickness: 0.14em;
  }

  .linkedin-link {
    align-items: center;
    display: inline-flex;
    gap: 0.75rem;
    justify-content: center;
  }

  .linkedin-link img {
    block-size: 1.5rem;
    inline-size: auto;
    flex-shrink: 0;
  }

  .closing__mark {
    display: block;
    inline-size: 4rem;
    block-size: 4rem;
    margin-block-end: 2rem;
  }

  .contact-form__field {
    display: grid;
    gap: 0.45rem;
  }

  .contact-form__field label {
    font-size: 0.9rem;
    font-weight: 650;
  }

  .contact-form__field label span {
    color: var(--content-muted);
    font-weight: 400;
  }

  .contact-form__field input,
  .contact-form__field textarea {
    background: var(--color-paper);
    border: 1px solid var(--color-cyan);
    border-radius: 0.55rem;
    color: var(--color-ivory);
    font: inherit;
    inline-size: 100%;
    padding: 0.75rem 0.85rem;
  }

  .contact-form__field textarea {
    min-block-size: 8rem;
    resize: vertical;
  }

  .contact-form__field input:focus-visible,
  .contact-form__field textarea:focus-visible {
    outline-color: var(--color-focus);
    outline-offset: 2px;
  }

  .contact-form__field input::placeholder,
  .contact-form__field textarea::placeholder {
    color: var(--color-muted-on-dark);
  }

  .contact-form__notice,
  .contact-form__status {
    color: var(--content-muted);
    font-size: 0.85rem;
    margin: 0;
    max-inline-size: none;
    inline-size: 100%;
  }

  .contact-form__status:empty {
    display: none;
  }

  .contact-form__trap {
    block-size: 1px;
    clip-path: inset(50%);
    inline-size: 1px;
    overflow: hidden;
    position: absolute;
    white-space: nowrap;
  }

  .empty-state {
    border-block: 1px solid var(--content-border);
    margin-block-start: 4rem;
    padding-block: 2.5rem;
  }

  .empty-state__symbol {
    color: var(--color-gold);
    font-family: var(--font-display);
    font-size: 2.5rem;
  }

  .empty-state h2 {
    font-size: 1.8rem;
    margin-block: 0.75rem 0.5rem;
  }

  .empty-state p {
    color: var(--content-muted);
  }

  #quarto-footer {
    border-block-start: 1px solid var(--color-line-on-dark);
    color: var(--color-muted-on-dark);
    font-size: 0.82rem;
    padding-block: 1.5rem;
  }

  #quarto-footer a {
    color: var(--color-ivory);
  }

  #title-block-header {
    display: none;
  }

  #quarto-document-content {
    color: var(--page-fg);
    margin-inline: auto;
    max-inline-size: var(--content-width);
    padding: clamp(2rem, 6vw, 5rem) 1.5rem;
  }

  #quarto-document-content a {
    color: var(--color-cyan);
  }

  #quarto-document-content pre,
  #quarto-document-content table {
    background: var(--color-navy);
    border: 1px solid var(--color-line-on-dark);
    border-radius: 0.5rem;
    color: var(--page-fg);
  }

  #quarto-document-content pre {
    overflow-x: auto;
    padding: 1rem;
  }

  #quarto-document-content blockquote {
    border-inline-start: 3px solid var(--color-gold);
    color: var(--content-muted);
    padding-inline-start: 1rem;
  }

  @media (max-width: 760px) {
    .site-header {
      position: static;
    }

    .hero {
      min-block-size: min(48rem, calc(100svh - 4rem));
    }

    .hero::after {
      background: linear-gradient(rgb(6 25 35 / 85%), rgb(6 25 35 / 80%));
    }

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

    .profile-portrait {
      justify-self: center;
      text-align: center;
    }

    .experience-item,
    .education {
      grid-template-columns: 1fr;
    }

    .experience-item__body {
      grid-column: 1;
    }

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

    .education-list {
      margin-block-start: 0.5rem;
    }

    .education-list li {
      grid-template-columns: minmax(0, 1fr);
    }

    .education-list span {
      text-align: start;
    }

    .projects__intro,
    .writing-intro__grid {
      grid-template-columns: 1fr;
    }

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

    .site-header__inner {
      gap: 0.25rem 1rem;
      padding-block: 0.5rem;
    }

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

  @media (max-width: 480px) {
    .section-wrap {
      inline-size: min(100% - 2rem, var(--content-width));
    }

    .hero {
      padding-inline: 1rem;
    }

    .hero h1 {
      font-size: clamp(2.7rem, 12vw, 3.5rem);
    }

    .hero__actions {
      align-items: stretch;
      flex-direction: column;
    }

    .hero__actions .button {
      inline-size: 100%;
    }

    .hero__scroll {
      inset-inline-start: 50%;
    }
  }

  @media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
      scroll-behavior: auto !important;
      transition-duration: 0.01ms !important;
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
    }

    .hero__art {
      transform: none;
      will-change: auto;
    }
  }

  @media (forced-colors: active) {
    :root {
      --color-ink: CanvasText;
      --color-navy: Canvas;
      --color-raised: Canvas;
      --color-paper: Canvas;
      --color-ivory: CanvasText;
      --color-cyan: LinkText;
      --color-gold: CanvasText;
      --color-accent-text: LinkText;
      --color-focus: Highlight;
      --color-muted-on-dark: CanvasText;
      --color-muted-on-light: CanvasText;
      --color-line-on-dark: CanvasText;
      --color-line-on-light: CanvasText;
      --page-bg: Canvas;
      --page-fg: CanvasText;
      --content-muted: CanvasText;
      --content-border: CanvasText;
      --content-accent: LinkText;
    }

    .hero__art {
      display: none;
    }

    .hero::after {
      display: none;
    }

    .button,
    .testimonial-control {
      background: ButtonFace;
      color: ButtonText;
    }

    body,
    .site-header,
    .site-footer,
    .hero,
    .intro,
    .experience-band,
    .projects,
    .writing-intro,
    .closing,
    .project,
    .contact-form {
      background: Canvas;
      color: CanvasText;
    }

    .button,
    .project,
    .empty-state,
    .contact-form,
    .contact-form__field input,
    .contact-form__field textarea,
    #quarto-document-content pre,
    #quarto-document-content table {
      border: 1px solid CanvasText;
    }

    .site-header a,
    .site-footer a,
    .hero a,
    .experience-band a,
    .closing a {
      color: LinkText;
    }

    .contact-form__field input,
    .contact-form__field textarea {
      background: Field;
      color: FieldText;
    }

    :focus-visible {
      outline: 3px solid Highlight;
    }
  }

  @media print {
    :root {
      --color-ink: black;
      --color-navy: white;
      --color-paper: white;
      --color-raised: white;
      --color-ivory: black;
      --color-cyan: black;
      --color-gold: black;
      --color-accent-text: black;
      --color-muted-on-dark: black;
      --content-muted: black;
      --content-accent: black;
      --content-border: black;
      --color-line-on-dark: black;
    }

    .site-header,
    .testimonial-controls,
    .project-filters,
    .contact-form {
      display: none;
    }

    .testimonial-grid[data-carousel] {
      display: grid;
      overflow: visible;
    }

    [data-reveal-pending] {
      opacity: 1;
      transform: none;
    }

    #quarto-header,
    .hero__art,
    .hero__scroll {
      display: none;
    }

    body,
    .hero,
    .experience-band {
      background: white;
      color: black;
    }

    .hero {
      min-block-size: auto;
      padding: 2rem 0;
    }

    a {
      text-decoration: underline;
    }
  }

  @media (prefers-contrast: more) {
    :root {
      --color-line-on-dark: #75c6d0;
      --content-border: #75c6d0;
    }

    .site-header {
      background: var(--color-ink);
    }
  }