:root {
  color-scheme: dark;
  --orange-300: #ffb862;
  --orange-400: #ffa333;
  --orange-500: #ff8c00;
  --orange-700: #9c4900;
  --navy-400: #7d86ff;
  --navy-500: #000080;
  --color-bg-canvas: #0e1116;
  --color-bg-surface: #161b24;
  --color-bg-raised: #1e2531;
  --color-text-primary: #f7f3ea;
  --color-text-secondary: #c0c6d0;
  --color-text-muted: #9ba4b2;
  --color-link: var(--orange-400);
  --color-border-subtle: #2a3341;
  --color-focus-ring: #ffb04a;
  --ink: var(--color-text-primary);
  --muted: var(--color-text-secondary);
  --faint: var(--color-text-muted);
  --night: var(--color-bg-canvas);
  --navy: var(--navy-500);
  --amber: var(--color-link);
  --amber-soft: var(--orange-300);
  --signal: var(--orange-500);
  --line: var(--color-border-subtle);
  --font-display: "Familjen Grotesk", "Arial Narrow", sans-serif;
  --font-body: "Onest", "Segoe UI", sans-serif;
  --duration-fast: 120ms;
  --duration-standard: 200ms;
  --duration-deliberate: 320ms;
  --ease-standard: cubic-bezier(0.22, 1, 0.36, 1);
  --page-pad: clamp(1rem, 3vw, 2rem);
  --max: 73.75rem;
}

[data-theme="light"] {
  color-scheme: light;
  --color-bg-canvas: #f7f6f2;
  --color-bg-surface: #ffffff;
  --color-bg-raised: #eff0f2;
  --color-text-primary: #151820;
  --color-text-secondary: #4e5664;
  --color-text-muted: #666f7e;
  --color-link: var(--orange-700);
  --color-border-subtle: #d7dae0;
  --color-focus-ring: var(--navy-500);
  --amber-soft: var(--orange-700);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--night);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--night);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.58;
  text-rendering: optimizeLegibility;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: 20;
  pointer-events: none;
  content: "";
  border: 1px solid var(--line);
}

a {
  color: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

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

.skip-link {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 100;
  padding: 0.65rem 1rem;
  color: #15100a;
  background: var(--signal);
  font-weight: 700;
  transform: translateY(-180%);
  transition: transform var(--duration-fast) var(--ease-standard);
}

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

.site-header {
  position: absolute;
  inset: 0 0 auto;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.5rem var(--page-pad);
}

.monogram {
  display: inline-grid;
  place-items: center;
  width: 2.8rem;
  aspect-ratio: 1;
  color: #15100a;
  background: var(--signal);
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
}

.site-nav {
  display: flex;
  gap: clamp(1rem, 3vw, 2.5rem);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-nav a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  color: var(--muted);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-standard);
}

.site-nav a:hover {
  color: var(--amber);
}

@media (min-width: 901px) {
  [data-theme="light"] .site-nav a {
    color: #f7f3ea;
  }

  [data-theme="light"] .site-nav a:hover {
    color: var(--orange-300);
  }
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(22rem, 0.95fr);
  align-items: end;
  min-height: 100svh;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-copy {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 100%;
  padding: clamp(8rem, 15vh, 11rem) var(--page-pad) clamp(3rem, 8vh, 6rem);
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 0 0 1.25rem;
  color: var(--amber-soft);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 0.55rem;
  aspect-ratio: 1;
  content: "";
  background: var(--signal);
  border-radius: 50%;
}

.hero h1 {
  max-width: 10ch;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(3.6rem, 7vw, 5.96rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 0.96;
}

.hero h1 em {
  color: var(--amber);
  font-style: italic;
  font-weight: 500;
}

.hero-deck {
  max-width: 35rem;
  margin: clamp(2rem, 4vw, 3.5rem) 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.5vw, 1.25rem);
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-top: 2rem;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding-block: 0.25rem;
  min-height: 44px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-decoration: none;
  text-transform: uppercase;
}

.text-link::after {
  content: "↗";
  color: var(--amber);
  font-size: 1.1em;
  transition: transform var(--duration-fast) var(--ease-standard);
}

.text-link:hover::after {
  transform: translate(2px, -2px);
}

.contribution-ledger {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 100%;
  margin: 0;
  padding: clamp(7rem, 13vh, 9rem) clamp(1.5rem, 4vw, 4rem) clamp(2rem, 6vh, 4rem);
  border: 1px solid var(--navy-400);
  color: #f7f3ea;
  background: var(--navy);
}

.ledger-header {
  display: grid;
  gap: 0.65rem;
}

.ledger-kicker {
  margin: 0;
  color: var(--orange-300);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ledger-header h2 {
  max-width: 10ch;
  margin: 0;
  color: #f7f3ea;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.75rem);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 0.96;
}

.ledger-header h2 span {
  color: var(--orange-300);
  font-variant-numeric: tabular-nums;
}

.ledger-list {
  display: grid;
  gap: clamp(0.65rem, 1.7vh, 1.15rem);
  margin: clamp(1.5rem, 4vh, 3rem) 0;
  padding: 0;
  list-style: none;
}

.ledger-list a {
  display: grid;
  gap: 0.45rem;
  min-height: 44px;
  align-content: center;
  color: #f7f3ea;
  text-decoration: none;
}

.ledger-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}

.ledger-repo {
  overflow: hidden;
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  font-weight: 600;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: color var(--duration-fast) var(--ease-standard);
}

.ledger-count {
  color: var(--orange-300);
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
}

.ledger-bar {
  display: block;
  height: 4px;
  overflow: hidden;
  border: 1px solid var(--navy-400);
}

.ledger-fill {
  display: block;
  width: max(4px, var(--share));
  height: 100%;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: left;
  animation: ledger-in var(--duration-deliberate) var(--ease-standard) var(--delay) forwards;
  transition: background-color var(--duration-fast) var(--ease-standard);
}

.ledger-list a:hover .ledger-repo,
.ledger-list a:focus-visible .ledger-repo {
  color: var(--orange-300);
}

.ledger-list a:hover .ledger-fill,
.ledger-list a:focus-visible .ledger-fill {
  background: var(--orange-300);
}

.ledger-note {
  margin: 0;
  color: var(--orange-300);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

@keyframes ledger-in {
  to { transform: scaleX(1); }
}

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(3rem, 8vw, 6rem) var(--page-pad);
}

.contribution-section {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(28rem, 0.95fr);
  gap: clamp(3rem, 8vw, 6rem);
  align-items: end;
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(3rem, 8vw, 6rem) var(--page-pad);
  border-bottom: 1px solid var(--line);
}

.contribution-copy h2 {
  max-width: 14ch;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 5vw, 5.8rem);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 0.96;
}

.contribution-copy h2 span {
  color: var(--amber);
}

.contribution-copy > p:last-child {
  max-width: 58ch;
  margin: 2rem 0 0;
  color: var(--muted);
}

.contribution-stats {
  margin: 0;
  border-top: 1px solid var(--line);
}

.contribution-stats div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 2rem;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--line);
}

.contribution-stats dt {
  color: var(--muted);
  font-size: 0.82rem;
}

.contribution-stats dd {
  margin: 0;
  color: var(--amber-soft);
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 600;
  letter-spacing: -0.025em;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(8rem, 0.35fr) minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
  margin-bottom: clamp(3rem, 7vw, 6rem);
}

.section-number {
  color: var(--amber);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.section h2 {
  max-width: 13ch;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 5.96rem);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 0.96;
}

.project-list {
  border-top: 1px solid var(--line);
}

.project {
  position: relative;
  display: grid;
  grid-template-columns: 4rem minmax(12rem, 0.65fr) minmax(18rem, 1.1fr) 7rem auto;
  gap: clamp(1rem, 3vw, 3rem);
  align-items: baseline;
  padding: clamp(1.75rem, 3vw, 2.75rem) 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  transition: color var(--duration-standard) var(--ease-standard), transform var(--duration-standard) var(--ease-standard);
}

.project-stat {
  color: var(--faint);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
}

.project-stat strong {
  color: var(--amber-soft);
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.project::before {
  position: absolute;
  inset: 0 calc(var(--page-pad) * -0.45);
  z-index: -1;
  content: "";
  background: var(--color-bg-raised);
  opacity: 0;
  transform: scaleY(0.72);
  transition: opacity var(--duration-standard) var(--ease-standard), transform var(--duration-standard) var(--ease-standard);
}

.project:hover::before,
.project:focus-visible::before {
  opacity: 1;
  transform: scaleY(1);
}

.project:hover,
.project:focus-visible {
  transform: translateY(-2px);
}

.project-index {
  color: var(--faint);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
}

.project-name {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.5vw, 2.35rem);
  font-weight: 600;
  letter-spacing: -0.025em;
}

.project-description {
  max-width: 52ch;
  color: var(--muted);
  font-size: 0.96rem;
}

.project-arrow {
  color: var(--amber);
  font-size: 1.35rem;
  transition: transform var(--duration-fast) var(--ease-standard);
}

.project:hover .project-arrow,
.project:focus-visible .project-arrow {
  transform: translate(2px, -2px);
}

.method-section {
  border-block: 1px solid var(--line);
  background: var(--color-bg-surface);
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  max-width: var(--max);
  margin: 0 auto;
  background: var(--line);
}

.method {
  min-height: 25rem;
  padding: clamp(2rem, 5vw, 4.5rem);
  background: var(--color-bg-surface);
}

.method h3 {
  display: block;
  max-width: 9ch;
  margin: 3rem 0 1.5rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.7vw, 4rem);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 0.96;
}

.method p {
  max-width: 33ch;
  margin: 0;
  color: var(--muted);
}

.method-marker {
  color: var(--amber);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.closing {
  position: relative;
  min-height: 82svh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(3rem, 8vw, 6rem) var(--page-pad) 2rem;
}

.closing h2 {
  max-width: 11ch;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(3.6rem, 7vw, 5.96rem);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 0.96;
}

.closing h2 span {
  color: var(--amber);
}

.closing-footer {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  padding-top: 5rem;
  color: var(--muted);
  font-size: 0.78rem;
}

.closing-footer p {
  max-width: 45ch;
  margin: 0;
}

.reveal {
  opacity: 0;
  transform: translateY(1.5rem);
  transition: opacity var(--duration-deliberate) var(--ease-standard), transform var(--duration-deliberate) var(--ease-standard);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.hero-copy > * {
  opacity: 0;
  transform: translateY(1.25rem);
  animation: hero-in var(--duration-deliberate) var(--ease-standard) forwards;
}

.hero-copy > :nth-child(2) { animation-delay: 40ms; }
.hero-copy > :nth-child(3) { animation-delay: 80ms; }
.hero-copy > :nth-child(4) { animation-delay: 120ms; }

@keyframes hero-in {
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-copy {
    min-height: 78svh;
  }

  .contribution-ledger {
    min-height: 46rem;
    padding-top: 5rem;
  }

  .contribution-section {
    grid-template-columns: 1fr;
  }

  .project {
    grid-template-columns: 2.5rem minmax(0, 1fr) 6rem auto;
  }

  .project-description {
    grid-column: 2 / 4;
  }

  .project-arrow {
    grid-column: 4;
    grid-row: 1;
  }

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

  .method {
    min-height: 0;
  }
}

@media (max-width: 560px) {
  .site-header {
    padding-top: 1rem;
  }

  .site-nav a:first-child {
    display: none;
  }

  .hero-copy {
    min-height: 74svh;
    padding-top: 7rem;
  }

  .hero h1 {
    font-size: clamp(3.6rem, 18vw, 5.96rem);
  }

  .contribution-ledger {
    min-height: 44rem;
    padding: 4.5rem 1.5rem 2rem;
  }

  .ledger-header h2 {
    font-size: clamp(2.35rem, 12vw, 3.5rem);
  }

  .ledger-list {
    gap: 0.55rem;
    margin-block: 1.25rem;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

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

  .project-stat {
    grid-column: 2;
  }

  .project-description {
    grid-column: 2 / -1;
  }

  .project-arrow {
    grid-column: 3;
  }

  .closing-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .reveal,
  .hero-copy > * {
    opacity: 1;
    transform: none;
  }
}

@media (forced-colors: active) {
  :focus-visible {
    outline-color: Highlight;
  }

  .ledger-bar,
  .ledger-fill {
    forced-color-adjust: auto;
  }
}