:root {
  --ink:    #1A1A1A;
  --raised: #232323;
  --lemon:  #F6EB61;
  --amber:  #F9C74F;
  --grey:   #A8A8A8;
  --paper:  #F9F9F9;

  --measure: 66ch;
  --edge: clamp(1.5rem, 6vw, 7.5rem);
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: Archivo, system-ui, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--lemon);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--lemon);
  color: var(--ink);
  padding: .75rem 1.25rem;
  font-weight: 600;
  z-index: 10;
}
.skip:focus { left: 0; }

/* ---------- masthead ---------- */

.masthead {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  padding: clamp(1.75rem, 4vw, 2.75rem) var(--edge) 0;
}

.wordmark {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -.02em;
  text-decoration: none;
}
.wordmark::after {
  content: "";
  display: inline-block;
  width: .375rem;
  height: .375rem;
  margin-left: .3125rem;
  border-radius: 50%;
  background: var(--lemon);
  vertical-align: .0625em;
}

.masthead nav a {
  font-size: .9375rem;
  font-weight: 500;
  color: var(--grey);
  text-decoration: none;
  text-underline-offset: .3em;
}
.masthead nav a:hover { color: var(--paper); text-decoration: underline; }
.masthead nav a[aria-current="page"] { color: var(--lemon); }

/* ---------- page shell ---------- */

main {
  padding: clamp(2.5rem, 7vh, 4.5rem) var(--edge) clamp(3.5rem, 9vh, 6rem);
}

.page-title {
  margin: 0 0 clamp(1.25rem, 3vw, 2rem);
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 600;
  line-height: .95;
  letter-spacing: -.035em;
}

.standfirst {
  max-width: var(--measure);
  margin: 0;
  font-family: Newsreader, Georgia, serif;
  font-size: clamp(1.0625rem, 1.35vw, 1.25rem);
  font-weight: 300;
  line-height: 1.72;
  color: #E4E4E4;
}

/* ---------- notes index ---------- */

.note-list {
  list-style: none;
  max-width: var(--measure);
  margin: clamp(2.5rem, 5vw, 3.5rem) 0 0;
  padding: 0;
}

.note-list li { border-top: 1px solid #333; }
.note-list li:last-child { border-bottom: 1px solid #333; }

.note-link {
  display: block;
  padding: 1.5rem 0;
  text-decoration: none;
}
.note-link:hover h2 { color: var(--lemon); }

.note-link .kicker {
  display: block;
  margin-bottom: .4375rem;
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--grey);
}

.note-link h2 {
  margin: 0 0 .5rem;
  font-size: clamp(1.375rem, 2.6vw, 1.75rem);
  font-weight: 600;
  line-height: 1.22;
  letter-spacing: -.02em;
  transition: color .18s ease;
}

.note-link p {
  margin: 0;
  max-width: 54ch;
  font-size: .9375rem;
  color: var(--grey);
  line-height: 1.6;
}

/* ---------- article ---------- */

.note-meta {
  margin: 0 0 clamp(1.5rem, 3vw, 2rem);
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--grey);
}

.prose { max-width: var(--measure); }

.prose h2 {
  margin: clamp(2.75rem, 6vw, 3.75rem) 0 .875rem;
  font-size: clamp(1.3125rem, 2.4vw, 1.625rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -.02em;
}
.prose h2::before {
  content: "";
  display: block;
  width: 2.25rem;
  height: 3px;
  margin-bottom: 1.125rem;
  background: var(--lemon);
}

.prose h3 {
  margin: 2rem 0 .5rem;
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -.01em;
}

.prose p, .prose li {
  font-family: Newsreader, Georgia, serif;
  font-size: 1.125rem;
  font-weight: 300;
  line-height: 1.75;
  color: #E4E4E4;
}

.prose p { margin: 0 0 1.25rem; }

.prose ul, .prose ol { margin: 0 0 1.25rem; padding-left: 1.25rem; }
.prose li { margin-bottom: .625rem; }
.prose li::marker { color: var(--lemon); }

.prose strong { color: var(--paper); font-weight: 500; }

.prose code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .9375em;
  padding: .1em .35em;
  border-radius: .25rem;
  background: var(--raised);
  color: var(--lemon);
}

.prose a { text-decoration: underline; text-underline-offset: .22em; }
.prose a:hover { color: var(--lemon); }

.todo {
  background: var(--raised);
  border-left: 3px solid var(--amber);
  padding: .125rem 1.25rem;
  margin: 0 0 1.25rem;
  border-radius: 0 .375rem .375rem 0;
}
.todo p { margin: 1.125rem 0; font-size: 1rem; }

.fill {
  background: rgba(249, 199, 79, .16);
  color: var(--amber);
  padding: .05em .35em;
  border-radius: .25rem;
  font-family: Archivo, system-ui, sans-serif;
  font-size: .9375rem;
  font-weight: 500;
}

.checks { list-style: none; padding-left: 0; }
.checks li {
  position: relative;
  padding-left: 1.875rem;
  font-size: 1.0625rem;
}
.checks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .5rem;
  width: 1rem;
  height: 1rem;
  border: 2px solid #555;
  border-radius: .1875rem;
}
.checks li.done::before {
  border-color: var(--lemon);
  background: var(--lemon);
}
.checks li.done::after {
  content: "";
  position: absolute;
  left: .28rem;
  top: .72rem;
  width: .4375rem;
  height: .25rem;
  border-left: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(-45deg);
}

.back {
  display: inline-block;
  margin-top: clamp(2.75rem, 6vw, 4rem);
  font-size: .9375rem;
  font-weight: 600;
  color: var(--lemon);
  text-decoration: none;
}
.back:hover { text-decoration: underline; text-underline-offset: .3em; }

/* ---------- footer ---------- */

.colophon {
  padding: 2.25rem var(--edge) 2.75rem;
  background: var(--amber);
  color: var(--ink);
  font-size: .875rem;
  font-weight: 500;
}

.disclaimer {
  max-width: 54ch;
  margin: 0 0 1.375rem;
  font-size: 1rem;
  line-height: 1.55;
}

.colophon-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.5rem;
  justify-content: space-between;
  padding-top: 1.125rem;
  border-top: 1px solid rgba(26,26,26,.25);
}

/* ---------- empty state ---------- */

.empty {
  max-width: var(--measure);
  margin: clamp(2.5rem, 5vw, 3.5rem) 0 0;
  padding: clamp(1.75rem, 4vw, 2.5rem);
  background: var(--raised);
  border-radius: .75rem;
  border-left: 3px solid var(--lemon);
}

.empty h2 {
  margin: 0 0 .875rem;
  font-size: clamp(1.25rem, 2.4vw, 1.5rem);
  font-weight: 600;
  letter-spacing: -.02em;
}

.empty p {
  margin: 0 0 1.125rem;
  font-family: Newsreader, Georgia, serif;
  font-size: 1.0625rem;
  font-weight: 300;
  line-height: 1.72;
  color: #E4E4E4;
}
.empty p:last-of-type { margin-bottom: 0; }

.empty .next {
  margin: 1.5rem 0 0;
  padding-top: 1.25rem;
  border-top: 1px solid #343434;
  font-family: Archivo, system-ui, sans-serif;
  font-size: .9375rem;
  color: var(--grey);
}
.empty .next strong { color: var(--lemon); font-weight: 600; }