:root {
  --background: #f7f8fa;
  --surface: #ffffff;
  --ink: #10213b;
  --muted: #526176;
  --border: #d9e0e8;
  --accent: #1557d6;
  --accent-dark: #0b42ad;
  --accent-soft: #eaf1ff;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

html {
  scroll-padding-top: 4.5rem;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

img,
svg {
  display: block;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--accent);
  text-decoration-thickness: .09em;
  text-underline-offset: .18em;
}

a:hover {
  color: var(--accent-dark);
}

a:focus-visible,
button:focus-visible {
  border-radius: .2rem;
  outline: .2rem solid var(--accent);
  outline-offset: .2rem;
}

h1,
h2,
h3,
h4,
p,
dl,
dd,
figure {
  margin-top: 0;
}

h1,
h2,
h3,
h4 {
  letter-spacing: -.025em;
  line-height: 1.15;
}

h1 {
  max-width: 58rem;
  margin-bottom: 1.5rem;
  font-size: clamp(2.55rem, 8vw, 5.5rem);
  font-weight: 750;
}

h2 {
  margin-bottom: 1rem;
  font-size: clamp(2rem, 5vw, 3.5rem);
}

h3 {
  font-size: 1.35rem;
}

code {
  padding: .1em .3em;
  border-radius: .25rem;
  background: #edf1f5;
  color: var(--ink);
  font-family: var(--mono);
  font-size: .88em;
}

.shell {
  width: min(100% - 2rem, 68rem);
  margin-inline: auto;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  z-index: 20;
  top: .75rem;
  left: .75rem;
  padding: .65rem .9rem;
  transform: translateY(-200%);
  background: var(--ink);
  color: #fff;
  font-weight: 700;
}

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

.site-nav {
  position: sticky;
  z-index: 10;
  top: 0;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.nav-inner {
  display: flex;
  width: min(100%, 72rem);
  min-height: 3.8rem;
  margin-inline: auto;
  align-items: center;
}

.wordmark {
  display: none;
  color: var(--ink);
  font-family: var(--mono);
  font-weight: 800;
  text-decoration: none;
}

.nav-scroll {
  width: 100%;
  overflow-x: auto;
  scrollbar-width: thin;
}

.nav-links {
  display: flex;
  width: max-content;
  min-width: 100%;
  margin: 0;
  padding: 0 .75rem;
  align-items: center;
  justify-content: center;
  gap: .15rem;
  list-style: none;
}

.nav-links a {
  display: flex;
  min-height: 2.75rem;
  padding: .65rem .5rem;
  align-items: center;
  color: var(--ink);
  font-size: .76rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.nav-links a:hover {
  color: var(--accent);
}

.nav-links .icon-link {
  width: 2.5rem;
  justify-content: center;
}

.icon-link svg,
.button svg {
  width: 1.15rem;
  height: 1.15rem;
  fill: currentColor;
}

.hero {
  padding-block: clamp(4.5rem, 12vw, 8rem) 4rem;
}

.hero-grid {
  display: grid;
  margin-bottom: clamp(2.5rem, 6vw, 4rem);
  align-items: center;
  gap: 2rem;
}

.metrics-heading {
  margin-bottom: 1.5rem;
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  letter-spacing: -.01em;
}

.section-kicker,
.project-number,
.highlight-label {
  color: var(--accent);
  font-family: var(--mono);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.hero-copy {
  max-width: 46rem;
  margin-bottom: 2rem;
  color: var(--muted);
  font-size: clamp(1.08rem, 2.6vw, 1.35rem);
}

.hero-actions {
  display: flex;
  margin-bottom: 0;
  flex-wrap: wrap;
  gap: .75rem;
}

.button {
  display: inline-flex;
  min-height: 2.9rem;
  padding: .7rem 1rem;
  border: 1px solid var(--border);
  border-radius: .3rem;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  font-weight: 750;
  text-decoration: none;
  transition: border-color 150ms ease, background-color 150ms ease, color 150ms ease;
}

.button-primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.button-primary:hover {
  border-color: var(--accent-dark);
  background: var(--accent-dark);
  color: #fff;
}

.button-secondary {
  background: var(--surface);
  color: var(--ink);
}

.button-secondary:hover {
  border-color: var(--accent);
  color: var(--accent-dark);
}

.metrics {
  display: grid;
  margin-bottom: 0;
  gap: 1.5rem;
}

.metric {
  padding-top: 1rem;
  border-top: 2px solid var(--ink);
}

.metric dt {
  margin-bottom: .35rem;
  font-family: var(--mono);
  font-size: clamp(1.7rem, 5vw, 2.5rem);
  font-weight: 750;
  letter-spacing: -.04em;
  line-height: 1.1;
}

.metric dd {
  max-width: 18rem;
  margin: 0;
  color: var(--muted);
  font-size: .94rem;
}

.section {
  padding-block: clamp(4.5rem, 10vw, 7rem);
  scroll-margin-top: 3.5rem;
}

.section-band {
  border-block: 1px solid var(--border);
  background: var(--surface);
}

.section-heading {
  max-width: 42rem;
  margin-bottom: clamp(2.5rem, 7vw, 4rem);
}

.section-heading > p:last-child {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.section-kicker {
  margin-bottom: 1rem;
}

.project-grid,
.contribution-grid,
.highlight-grid {
  display: grid;
  gap: 1rem;
}

.project-card,
.contribution-card {
  border: 1px solid var(--border);
  border-radius: .35rem;
  background: var(--surface);
}

.project-card {
  display: flex;
  min-width: 0;
  padding: clamp(1.25rem, 4vw, 2rem);
  flex-direction: column;
  transition: border-color 150ms ease, transform 150ms ease;
}

.project-card:hover {
  border-color: #9eb8e9;
  transform: translateY(-2px);
}

.project-card h3 {
  margin-bottom: .9rem;
  font-family: var(--mono);
  overflow-wrap: anywhere;
}

.project-card > p:not(.project-number) {
  color: var(--muted);
}

.project-number {
  margin-bottom: 2rem;
}

.tags {
  display: flex;
  margin: auto 0 1.5rem;
  padding: 1rem 0 0;
  flex-wrap: wrap;
  gap: .45rem;
  list-style: none;
}

.tags li {
  padding: .25rem .48rem;
  border: 1px solid #cbd8ef;
  border-radius: .25rem;
  background: var(--accent-soft);
  color: #29466f;
  font-family: var(--mono);
  font-size: .72rem;
}

.text-link {
  width: fit-content;
  font-weight: 750;
}

.contribution-card {
  padding: clamp(1.25rem, 4vw, 1.75rem);
  background: var(--background);
}

.contribution-card h3 {
  margin-bottom: .75rem;
  font-family: var(--mono);
  font-size: 1.05rem;
  overflow-wrap: anywhere;
}

.contribution-card h3 a {
  color: var(--ink);
}

.contribution-card > p:last-child {
  margin-bottom: 0;
  color: var(--muted);
}

.status {
  display: inline-block;
  padding: .22rem .48rem;
  border-radius: .2rem;
  font-family: var(--mono);
  font-size: .7rem;
  font-weight: 800;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.status-review {
  background: var(--accent);
  color: #fff;
}

.status-merged {
  background: #dfe5ec;
  color: #253950;
}

.highlight-grid {
  margin-bottom: clamp(4rem, 9vw, 6rem);
}

.highlight {
  padding-top: 1.5rem;
  border-top: 1px solid var(--ink);
}

.highlight h3 {
  margin-bottom: .8rem;
}

.highlight > p:last-child {
  margin-bottom: 0;
  color: var(--muted);
}

.highlight-label {
  margin-bottom: 1.5rem;
}

.chronology {
  max-width: 54rem;
}

.chronology > h3 {
  margin-bottom: 1.25rem;
}

.chronology ol {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--border);
  list-style: none;
}

.chronology li {
  display: grid;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--border);
  gap: .25rem 1.5rem;
}

.chronology p,
.chronology h4 {
  margin-bottom: 0;
}

.chronology h4 {
  font-size: 1rem;
  letter-spacing: -.01em;
}

.chronology li div p,
.chronology-date {
  color: var(--muted);
  font-size: .88rem;
}

.chronology-date {
  font-family: var(--mono);
}

.about-grid {
  max-width: 46rem;
  margin-bottom: clamp(3rem, 7vw, 5rem);
}

.portrait {
  width: min(100%, 28rem);
}

.portrait img,
.cat-gallery img {
  width: 100%;
  border-radius: .35rem;
  object-fit: cover;
}

.portrait img {
  aspect-ratio: 9 / 7;
}

.about-copy {
  max-width: 39rem;
}

.about-copy p {
  color: var(--muted);
}

.about-copy p:last-child {
  margin-bottom: 0;
}

.about-lede {
  color: var(--ink) !important;
  font-size: clamp(1.2rem, 3vw, 1.55rem);
  line-height: 1.5;
}

.cat-gallery {
  display: grid;
  gap: 1rem;
}

.cat-gallery figure {
  margin-bottom: 0;
}

.cat-gallery img {
  aspect-ratio: 3 / 4;
}

.cat-gallery figcaption {
  padding-top: .55rem;
  color: var(--ink);
  font-family: var(--mono);
  font-size: .8rem;
  font-weight: 700;
}

.site-footer {
  padding-block: 2rem;
  border-top: 1px solid var(--border);
  background: var(--background);
}

.footer-inner,
.site-footer ul {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

.footer-inner {
  justify-content: space-between;
}

.footer-inner p {
  margin-bottom: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: .8rem;
}

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

.site-footer a {
  color: var(--ink);
  font-size: .9rem;
  font-weight: 700;
}

.error-page {
  display: grid;
  min-height: 100vh;
  place-items: center;
}

.error-content {
  max-width: 38rem;
  padding-block: 4rem;
}

.error-code {
  margin-bottom: 1rem;
  color: var(--accent);
  font-family: var(--mono);
  font-weight: 800;
}

.error-content h1 {
  font-size: clamp(2.5rem, 10vw, 4.5rem);
}

.error-content > p:not(.error-code) {
  max-width: 30rem;
  margin-bottom: 2rem;
  color: var(--muted);
  font-size: 1.1rem;
}

@media (min-width: 36rem) {
  .metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .chronology li {
    grid-template-columns: minmax(11rem, .8fr) 1.5fr;
  }

  .cat-gallery {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 48rem) {
  .shell {
    width: min(100% - 3rem, 68rem);
  }

  .nav-inner {
    padding-inline: 1.5rem;
  }

  .wordmark {
    display: block;
    margin-right: auto;
    padding: .5rem;
  }

  .nav-scroll {
    width: auto;
    overflow: visible;
  }

  .nav-links {
    min-width: 0;
    padding: 0;
    gap: .3rem;
  }

  .nav-links a {
    padding-inline: .7rem;
    font-size: .82rem;
  }

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

  .hero-grid {
    grid-template-columns: minmax(0, 1fr) clamp(16rem, 32vw, 24rem);
    gap: clamp(2rem, 5vw, 4rem);
  }

  .hero-portrait {
    width: 100%;
    justify-self: end;
  }
}

@media (min-width: 60rem) {
  .metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .highlight-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }
}

@media print {
  .site-nav,
  .hero-actions,
  .cat-gallery,
  .site-footer {
    display: none;
  }

  body,
  .section-band,
  .project-card,
  .contribution-card {
    background: #fff;
  }

  .section,
  .hero {
    padding-block: 2rem;
  }
}