:root {
  color-scheme: dark;
  --night: #171713;
  --night-raised: #1c1b16;
  --paper: #eee8dc;
  --paper-muted: #aaa394;
  --rule: #454239;
  --rule-lit: #695746;
  --ember: #cf8953;
  --ember-soft: #e0ad78;
  --glow: rgba(211, 145, 81, 0.14);
  --measure: 42rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 18rem;
  background:
    linear-gradient(90deg, transparent 0, transparent 7vw, var(--rule) 7vw, var(--rule) calc(7vw + 1px), transparent calc(7vw + 1px)),
    var(--night);
  color: var(--paper);
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  font-size: 1.0625rem;
  line-height: 1.68;
  transition: background 700ms ease, color 350ms ease;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: radial-gradient(circle at 30% 16rem, transparent 0, transparent 8rem, rgba(0, 0, 0, 0.28) 42rem);
  content: "";
  pointer-events: none;
}

body[data-lamp="lit"] {
  background:
    radial-gradient(circle at 30% 16rem, var(--glow), transparent 31rem),
    linear-gradient(90deg, transparent 0, transparent 7vw, var(--rule-lit) 7vw, var(--rule-lit) calc(7vw + 1px), transparent calc(7vw + 1px)),
    var(--night-raised);
}

a {
  color: inherit;
  text-decoration-color: var(--ember);
  text-underline-offset: 0.24em;
}

a:hover {
  color: var(--ember-soft);
}

a:focus-visible,
button:focus-visible,
[tabindex="-1"]:focus-visible {
  outline: 2px solid var(--ember);
  outline-offset: 5px;
}

[tabindex="-1"]:focus-visible {
  outline-color: transparent;
}

.skip-link {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 20;
  padding: 0.55rem 0.8rem;
  background: var(--paper);
  color: var(--night);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.8125rem;
  transform: translateY(-200%);
}

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

.site-header,
main,
footer {
  width: min(72rem, calc(100% - 12vw));
  margin-inline: auto;
}

.site-header {
  min-height: 7rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  border-bottom: 1px solid var(--rule);
}

.identity {
  display: inline-flex;
  align-items: baseline;
  gap: 0.65rem;
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.025em;
}

.identity-note,
.where,
.eyebrow,
.door,
.footing,
.source-return,
.doors span,
footer,
.noscript-note {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.identity-note,
.where,
.eyebrow,
.doors span,
footer {
  text-transform: uppercase;
  letter-spacing: 0.13em;
}

.identity-note,
.where {
  color: var(--paper-muted);
  font-size: 0.6875rem;
  font-weight: 500;
}

.where {
  margin: 0;
}

.where span:first-child {
  margin-right: 0.55rem;
  color: var(--ember);
}

.passage {
  max-width: 51rem;
  min-height: 78svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(5rem, 11vw, 9rem) 0;
  border-bottom: 1px solid var(--rule);
}

.threshold {
  min-height: calc(100svh - 7rem);
}

.js [data-step]:not(.is-revealed) {
  display: none;
}

.js [data-step].is-revealed {
  animation: arrive 520ms ease both;
}

.eyebrow {
  margin: 0 0 1.25rem;
  color: var(--ember);
  font-size: 0.72rem;
  font-weight: 700;
}

h1,
h2,
p {
  margin-top: 0;
}

h1,
.passage h2,
.practice > h2 {
  max-width: 18ch;
  margin-bottom: 2.25rem;
  font-size: clamp(2.3rem, 4.2vw, 3.75rem);
  font-weight: 400;
  letter-spacing: -0.036em;
  line-height: 1.04;
}

.passage h2,
.practice > h2 {
  font-size: clamp(1.95rem, 3.6vw, 3.15rem);
}

.threshold-line,
.plain-copy,
.first-person-view,
.stop-line {
  max-width: var(--measure);
}

.threshold-line {
  margin-bottom: 1.8rem;
  color: var(--paper-muted);
  font-size: clamp(1.15rem, 2vw, 1.35rem);
}

.plain-copy {
  margin-bottom: 2rem;
}

.plain-copy p {
  margin-bottom: 0.8rem;
}

.door {
  width: fit-content;
  display: inline-flex;
  gap: 0.72rem;
  align-items: baseline;
  padding: 0.35rem 0;
  border: 0;
  border-bottom: 1px solid transparent;
  background: transparent;
  color: var(--paper);
  font-size: 0.9rem;
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
}

.door:hover {
  border-bottom-color: var(--ember);
  color: var(--ember-soft);
}

.door-mark {
  color: var(--ember);
  transition: transform 180ms ease;
}

.door:hover .door-mark {
  transform: translateX(0.2rem);
}

.lamp-control[aria-pressed="true"] .door-mark {
  color: #f0b678;
  text-shadow: 0 0 1.2rem rgba(240, 182, 120, 0.72);
}

.first-person-view {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 1rem;
  margin: 0 0 1.1rem;
  padding: 1.45rem 0;
  color: #e3ddcf;
  font-size: clamp(1.08rem, 1.7vw, 1.24rem);
}

.first-person-view p {
  margin-bottom: 0.5rem;
}

.first-person-view p:last-child {
  margin-bottom: 0;
}

.bracket {
  color: var(--ember);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.bracket-close {
  align-self: end;
}

.footing {
  margin: 0 0 2.25rem;
  padding: 0;
  color: var(--paper-muted);
  font-size: 0.72rem;
  line-height: 1.7;
  list-style: none;
}

.footing li {
  counter-increment: footing;
}

.footing li::before {
  content: "[" counter(footing) "] ";
  color: var(--ember);
}

.footing {
  counter-reset: footing;
}

.stop-line {
  margin: 0 0 1.8rem;
  color: var(--paper-muted);
}

.source-return {
  margin: 2rem 0 0;
  color: var(--paper-muted);
  font-size: 0.7rem;
}

.practice {
  padding: clamp(7rem, 14vw, 12rem) 0;
  border-top: 1px solid var(--rule);
}

.practice-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(3rem, 8vw, 7rem);
  margin-bottom: clamp(4rem, 9vw, 7rem);
}

.practice-grid p {
  max-width: 37rem;
}

.practice-lede {
  font-size: clamp(1.25rem, 2.1vw, 1.7rem);
  line-height: 1.48;
}

.doors {
  max-width: 62rem;
  border-top: 1px solid var(--rule);
}

.doors a {
  display: grid;
  grid-template-columns: minmax(8rem, 0.45fr) 1fr auto;
  gap: 1.5rem;
  align-items: baseline;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--rule);
  text-decoration: none;
}

.doors a::after {
  content: "\2197";
  color: var(--paper-muted);
  font-family: system-ui, sans-serif;
}

.doors a:first-child::after {
  content: "\2192";
}

.doors span {
  color: var(--paper-muted);
  font-size: 0.6875rem;
}

.doors strong {
  overflow-wrap: anywhere;
  font-size: clamp(1rem, 2vw, 1.2rem);
  font-weight: 400;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  padding: 1.6rem 0 3rem;
  border-top: 1px solid var(--rule);
  color: var(--paper-muted);
  font-size: 0.6875rem;
}

footer p {
  margin: 0;
}

.noscript-note {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  max-width: 24rem;
  padding: 0.75rem 1rem;
  background: var(--paper);
  color: var(--night);
  font-size: 0.75rem;
}

@keyframes arrive {
  from {
    opacity: 0;
    transform: translateY(1.1rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 46rem) {
  body {
    background:
      linear-gradient(90deg, transparent 0, transparent 1.35rem, var(--rule) 1.35rem, var(--rule) calc(1.35rem + 1px), transparent calc(1.35rem + 1px)),
      var(--night);
    font-size: 1rem;
  }

  body[data-lamp="lit"] {
    background:
      radial-gradient(circle at 45% 12rem, var(--glow), transparent 24rem),
      linear-gradient(90deg, transparent 0, transparent 1.35rem, var(--rule-lit) 1.35rem, var(--rule-lit) calc(1.35rem + 1px), transparent calc(1.35rem + 1px)),
      var(--night-raised);
  }

  .site-header,
  main,
  footer {
    width: calc(100% - 4rem);
    margin-left: 2.8rem;
    margin-right: 1.2rem;
  }

  .site-header {
    min-height: 5.5rem;
  }

  .identity-note {
    display: none;
  }

  .passage {
    min-height: 72svh;
    padding: 4.75rem 0;
  }

  .threshold {
    min-height: calc(100svh - 5.5rem);
  }

  h1 {
    font-size: clamp(2.2rem, 10.5vw, 2.8rem);
  }

  .passage h2,
  .practice > h2 {
    font-size: clamp(1.85rem, 8.5vw, 2.5rem);
  }

  .first-person-view {
    gap: 0.65rem;
    font-size: 1.02rem;
  }

  .practice-grid {
    display: block;
  }

  .practice-grid > * + * {
    margin-top: 2.5rem;
  }

  .doors a {
    grid-template-columns: 1fr auto;
    gap: 0.35rem 1rem;
  }

  .doors span,
  .doors strong {
    grid-column: 1;
  }

  .doors a::after {
    grid-column: 2;
    grid-row: 1 / 3;
    align-self: center;
  }
}

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

  body,
  .door-mark {
    transition: none;
  }

  .js [data-step].is-revealed {
    animation: none;
  }
}