/* Atlas: an engraved star atlas, printed as a field edition: white line on black, its marks in
   one color. Every color is a variable, so the same plates can be printed another way: see
   "Editions". tools/check-contrast.mjs checks every edition, and every position of the dial. */

@font-face {
  font-family: 'IM Fell English';
  src: url('assets/fonts/im-fell-english-roman.woff2') format('woff2');
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: 'IM Fell English';
  src: url('assets/fonts/im-fell-english-italic.woff2') format('woff2');
  font-style: italic;
  font-weight: 400;
  font-display: swap;
}

:root {
  /* Field, in color: white line on black, and the marks that matter (the planets, the stops, the
     measures, the current place) in one color. The visitor may turn its hue (editions.js); this
     is oklch(0.76 0.115 175). */
  --ink: #0c0c0b;
  --ink-deep: #040404;
  --ink-lift: #171716;
  --well: #050505;
  --line: #e2dfd8;
  --dim: rgba(226, 223, 216, 0.76);
  --faint: rgba(226, 223, 216, 0.32);
  --hair: rgba(226, 223, 216, 0.17);
  --gold: #51c9ad;
  --serif: 'IM Fell English', 'Iowan Old Style', Georgia, serif;
  --gutter: clamp(16px, 4vw, 56px);
  color-scheme: dark;
}

/* Editions: other ways an engraved atlas was printed. Field, in color is the default (:root).
   --gold is each edition's one color, whatever it is. */

/* Indigo and gilt: white line on an indigo ground, heightened with gold. */
:root[data-scheme='gilt'] {
  --ink: #0d1040;
  --ink-deep: #080a2b;
  --ink-lift: #161a5c;
  --well: #0a0c33;
  --line: #eef0ff;
  --dim: rgba(238, 240, 255, 0.72);
  --faint: rgba(238, 240, 255, 0.28);
  --hair: rgba(238, 240, 255, 0.16);
  --gold: #e8bd5a;
}

/* Plain: black ink on laid paper. Black and one color: the same sheet, its marks in one color
   the visitor may turn (oklch(0.47 0.076 25) as printed). */
:root[data-scheme='plain'],
:root[data-scheme='one-color'],
:root[data-scheme='colored'] {
  color-scheme: light;
  --ink: #f2ebd9;
  --ink-deep: #e7dec6;
  --ink-lift: #f9f4e7;
  --well: #f7f2e3;
  --line: #1c1915;
  --dim: rgba(28, 25, 21, 0.8);
  --faint: rgba(28, 25, 21, 0.36);
  --hair: rgba(28, 25, 21, 0.18);
  --gold: #1c1915;
}
:root[data-scheme='plain'] body,
:root[data-scheme='one-color'] body,
:root[data-scheme='colored'] body {
  /* The laid lines and chain lines of a hand-made sheet. */
  background:
    repeating-linear-gradient(0deg, rgba(70, 52, 20, 0.03) 0 1px, transparent 1px 3px),
    repeating-linear-gradient(90deg, rgba(70, 52, 20, 0.032) 0 1px, transparent 1px 37px),
    radial-gradient(120% 80% at 50% 0%, var(--ink-lift) 0%, var(--ink) 50%, var(--ink-deep) 100%) fixed,
    var(--ink);
}

:root[data-scheme='one-color'] {
  --gold: #804945;
}

/* Hand-colored: the same sheet, each one washed along its border in its own color, the way a
   colorist outlined the countries of a map. */
:root[data-scheme='colored'] {
  --gold: #2a6a50;
}
:root[data-scheme='colored'] #splashery {
  --gold: #9a3553;
}
:root[data-scheme='colored'] #plates {
  --gold: #845509;
}
:root[data-scheme='colored'] #interests {
  --gold: #2f4d8c;
}
:root[data-scheme='colored'] .sheet {
  box-shadow: inset 0 0 0 7px color-mix(in srgb, var(--gold) 20%, transparent);
}

/* Field edition: white line on black, as a chart is printed for use in the dark, and no color. */
:root[data-scheme='field'] {
  --ink: #0c0c0b;
  --ink-deep: #040404;
  --ink-lift: #171716;
  --well: #050505;
  --line: #d6d3cb;
  --dim: rgba(214, 211, 203, 0.76);
  --faint: rgba(214, 211, 203, 0.32);
  --hair: rgba(214, 211, 203, 0.17);
  --gold: #ffffff;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  background: radial-gradient(120% 80% at 50% 0%, var(--ink-lift) 0%, var(--ink) 46%, var(--ink-deep) 100%) fixed, var(--ink);
  color: var(--line);
  font-family: var(--serif);
  font-size: clamp(1.05rem, 0.98rem + 0.3vw, 1.22rem);
  line-height: 1.55;
  overflow-x: hidden;
}
a {
  color: var(--line);
  text-decoration-color: var(--gold);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}
a:hover {
  color: var(--gold);
  text-decoration-thickness: 2px;
}
:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}
p {
  margin: 0 0 0.9em;
  text-wrap: pretty;
}
h1,
h2,
h3 {
  font-weight: 400;
  margin: 0;
  text-wrap: balance;
}
.sc {
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 0.82em;
}
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
.skip {
  position: absolute;
  left: -999px;
  top: 8px;
  background: var(--gold);
  color: var(--ink);
  padding: 6px 12px;
  z-index: 5;
}
.skip:focus {
  left: 8px;
}

/* The top margin of the sheet */
.top {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 28px;
  align-items: center;
  padding: 18px var(--gutter) 14px;
  border-bottom: 1px solid var(--hair);
}
.top-mark {
  margin: 0 auto 0 0;
}
/* The press: which edition, and the dial that turns its one color. */
.press {
  position: relative;
  font-size: 0.92em;
}
.press[hidden] {
  display: none;
}
.press summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  cursor: pointer;
  white-space: nowrap;
}
.press summary::-webkit-details-marker {
  display: none;
}
.press summary i {
  color: var(--dim);
}
.press summary .swatch {
  width: 16px;
  height: 16px;
}
.press summary::after {
  content: '';
  width: 6px;
  height: 6px;
  margin: 0 2px 3px 2px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transform: rotate(45deg);
}
.press[open] summary::after {
  margin-bottom: -3px;
  transform: rotate(225deg);
}
.press-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  z-index: 10;
  width: min(370px, calc(100vw - 2 * var(--gutter)));
  padding: 12px 14px 14px;
  background: var(--ink);
  border: 1px solid var(--faint);
  outline: 1px solid var(--hair);
  outline-offset: 3px;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.4);
  white-space: normal;
}
.press-list {
  display: grid;
  gap: 2px;
}
.press-list button {
  all: unset;
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  column-gap: 12px;
  align-items: center;
  min-height: 44px;
  padding: 3px 8px;
  border-radius: 2px;
  cursor: pointer;
}
.press-list button .swatch {
  grid-row: span 2;
}
.press-name {
  line-height: 1.2;
}
.press-note {
  font-size: 0.84em;
  font-style: italic;
  line-height: 1.25;
  color: var(--dim);
}
.press-list button[aria-pressed='true'] {
  box-shadow: inset 0 0 0 1px var(--gold);
}
.press-list button:hover .press-name {
  color: var(--gold);
}
.press-list button:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 1px;
}
.dial {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px 12px;
  align-items: center;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--hair);
}
.dial label {
  grid-column: 1 / -1;
}
.dial label span {
  color: var(--gold);
}
.dial input[type='range'] {
  height: 30px;
  cursor: pointer;
}
.dial input[type='range']::-webkit-slider-runnable-track {
  height: 10px;
  border-radius: 5px;
  background: var(--track, var(--faint));
}
.dial input[type='range']::-moz-range-track {
  height: 10px;
  border-radius: 5px;
  background: var(--track, var(--faint));
}
.dial input[type='range']::-webkit-slider-thumb {
  width: 20px;
  height: 20px;
  margin-top: -5px;
  border-radius: 50%;
  border: 2px solid var(--line);
  background: var(--gold);
  clip-path: none;
}
.dial input[type='range']::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid var(--line);
  background: var(--gold);
  clip-path: none;
}
.dial button {
  font: inherit;
  font-size: 0.92em;
  color: var(--line);
  background: transparent;
  border: 1px solid var(--faint);
  border-radius: 2px;
  min-height: 36px;
  padding: 4px 10px;
  cursor: pointer;
}
.dial button:hover {
  border-color: var(--gold);
}
.dial.off input,
.dial.off button {
  opacity: 0.35;
  cursor: default;
}
.press-fine {
  grid-column: 1 / -1;
  margin: 0;
  font-size: 0.82em;
  font-style: italic;
  line-height: 1.35;
  color: var(--dim);
}
.swatch {
  position: relative;
  display: block;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1px solid #8a8778;
  overflow: hidden;
}
.swatch::after {
  content: '';
  position: absolute;
  inset: 58% 0 0;
  background: var(--swatch, #fff);
}
.s-field-color,
.s-field {
  background: #0c0c0b;
}
.s-field-color {
  --swatch: #51c9ad;
}
.s-gilt {
  background: #0d1040;
  --swatch: #e8bd5a;
}
.s-plain,
.s-one-color,
.s-colored {
  background: #f2ebd9;
}
.s-plain {
  --swatch: #1c1915;
}
.s-one-color {
  --swatch: #804945;
}
.s-colored::after {
  background: linear-gradient(90deg, #2a6a50 0 34%, #9a3553 34% 67%, #845509 67%);
}
@media (max-width: 560px) {
  .top {
    gap: 0 24px;
    padding-top: 14px;
    padding-bottom: 6px;
  }
  .press {
    flex-basis: 100%;
  }
  .press-panel {
    position: static;
    width: auto;
    margin: 4px 0 10px;
  }
}
.top-mark i {
  color: var(--dim);
}
.top nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 22px;
  font-style: italic;
}
.top nav a {
  text-decoration: none;
  padding: 10px 0;
}

.plate-no {
  margin: 0 0 0.5em;
  color: var(--gold);
  letter-spacing: 0.04em;
}
.plate-no i {
  color: var(--dim);
}

/* Plate I */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  grid-template-areas: 'text plate' 'stops plate';
  gap: 28px clamp(28px, 5vw, 80px);
  align-items: start;
  padding: clamp(28px, 5vw, 64px) var(--gutter) clamp(40px, 6vw, 80px);
  max-width: 1500px;
  margin: 0 auto;
}
.cartouche {
  grid-area: text;
}
.plate-wrap {
  grid-area: plate;
  position: sticky;
  top: 16px;
}
.stops-wrap {
  grid-area: stops;
}
h1 {
  font-size: clamp(3rem, 2rem + 6vw, 7rem);
  line-height: 0.95;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin: 0.1em 0 0.18em -0.03em;
}
.sub {
  font-size: 1.3em;
  color: var(--gold);
  margin-bottom: 1.1em;
}
.cartouche p:not(.sub):not(.plate-no) {
  max-width: 34em;
  color: var(--dim);
}
.how {
  color: var(--line) !important;
  font-style: italic;
}

.plate {
  display: block;
  width: min(100%, 60vh);
  aspect-ratio: 1;
  margin: 0 auto;
  border-radius: 50%;
  cursor: ns-resize;
  touch-action: pan-y;
}
.plate-hint {
  position: absolute;
  left: 50%;
  top: 14px;
  transform: translateX(-50%);
  margin: 0;
  padding: 4px 12px;
  background: var(--ink-deep);
  border: 1px solid var(--gold);
  color: var(--gold);
  font-style: italic;
  font-size: 0.9em;
  white-space: nowrap;
  pointer-events: none;
}
.plate-hint[hidden] {
  display: none;
}
.readout {
  text-align: center;
  margin-top: 8px;
  min-height: 6.1em;
}
.stop-source {
  font-size: 0.86em;
  font-style: italic;
  color: var(--dim);
  margin: 0.2em auto 0;
  max-width: 36em;
  min-height: 1.5em;
}
.stop-name {
  font-size: 1.35em;
  font-style: italic;
  margin: 0 0 0.1em;
  color: var(--gold);
}
.stop-measure {
  color: var(--dim);
  margin: 0;
  font-variant-numeric: tabular-nums;
}
.stop-measure span {
  display: inline-block;
}

.rule {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  margin-top: 6px;
}
.step,
.control button {
  font: inherit;
  color: var(--line);
  background: transparent;
  border: 1px solid var(--faint);
  border-radius: 2px;
  padding: 6px 12px;
  min-height: 44px;
  cursor: pointer;
}
.step:hover,
.control button:hover {
  border-color: var(--gold);
  color: var(--gold);
}
.rule-track {
  position: relative;
  padding-top: 4px;
}
input[type='range'] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 32px;
  margin: 0;
  background: transparent;
  cursor: ew-resize;
  touch-action: none;
}
input[type='range']::-webkit-slider-runnable-track {
  height: 1px;
  background: var(--line);
}
input[type='range']::-moz-range-track {
  height: 1px;
  background: var(--line);
}
input[type='range']::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 13px;
  height: 27px;
  margin-top: -13px;
  background: var(--gold);
  border: 0;
  clip-path: polygon(50% 100%, 0 62%, 0 0, 100% 0, 100% 62%);
}
input[type='range']::-moz-range-thumb {
  width: 13px;
  height: 27px;
  background: var(--gold);
  border: 0;
  border-radius: 0;
  clip-path: polygon(50% 100%, 0 62%, 0 0, 100% 0, 100% 62%);
}
.ticks {
  position: relative;
  height: 14px;
  margin: 0 6px;
}
.ticks i {
  position: absolute;
  top: 0;
  width: 1px;
  height: 7px;
  background: var(--dim);
}
.ticks i.on {
  height: 13px;
  background: var(--gold);
  width: 2px;
  margin-left: -0.5px;
}

.minor {
  font-size: 1em;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--dim);
  margin: 0 0 0.8em;
}
.stops {
  list-style: none;
  margin: 0 0 1em;
  padding: 0;
  border-top: 1px solid var(--hair);
  font-size: 0.92em;
}
.stops li {
  position: relative;
  padding: 0.42em 0.4em 0.42em 1.5em;
  border-bottom: 1px solid var(--hair);
  color: var(--dim);
  cursor: pointer;
}
.stops li b {
  font-weight: 400;
  color: var(--line);
}
.stops li::before {
  content: '';
  position: absolute;
  left: 0.3em;
  top: 0.95em;
  width: 7px;
  height: 7px;
  border: 1px solid var(--faint);
  border-radius: 50%;
}
.stops li.on::before {
  background: var(--gold);
  border-color: var(--gold);
}
.stops li.on b {
  color: var(--gold);
}
.stops li:hover b {
  color: var(--gold);
}
.stops button {
  all: unset;
  cursor: pointer;
}
.stops button:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}
.fine {
  font-size: 0.88em;
  font-style: italic;
  color: var(--dim);
}

/* A sheet of the atlas: a double rule all round */
.sheet {
  position: relative;
  max-width: 1380px;
  margin: 0 auto clamp(28px, 5vw, 64px);
  padding: clamp(24px, 4vw, 56px) clamp(18px, 4vw, 56px);
  width: calc(100% - 2 * var(--gutter));
  border: 1px solid var(--faint);
  outline: 1px solid var(--hair);
  outline-offset: 5px;
}
.sheet-head {
  text-align: center;
  margin-bottom: clamp(20px, 3vw, 40px);
}
.sheet-head.left {
  text-align: left;
  margin-bottom: 18px;
}
.sheet-head h2 {
  font-size: clamp(2rem, 1.4rem + 3vw, 4rem);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  line-height: 1.05;
}
.sheet-head.left h2 {
  font-size: clamp(1.5rem, 1.2rem + 1.4vw, 2.3rem);
}
.dates {
  color: var(--dim);
  margin: 0.2em 0 0.5em;
}
.lede {
  max-width: 44em;
  margin: 0 auto clamp(24px, 4vw, 48px);
  text-align: center;
  font-size: 1.1em;
}
.links {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 20px;
  margin: 0.4em 0 0;
  font-style: italic;
}
.links a {
  padding: 5px 0;
}
.lede .links {
  justify-content: center;
}

.figs {
  display: grid;
  gap: clamp(32px, 5vw, 72px);
}
.fig {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(20px, 4vw, 56px);
  align-items: center;
}
.fig.flip .fig-art {
  order: 2;
}
.fig.text-only {
  align-items: start;
  border-top: 1px solid var(--hair);
  padding-top: clamp(20px, 3vw, 36px);
}
.fig-no {
  color: var(--gold);
  font-style: italic;
  margin: 0 0 0.2em;
}
.fig h3,
.chart h3,
.index h3 {
  font-size: 1.55em;
  line-height: 1.15;
  margin-bottom: 0.4em;
}
.fig-text p {
  color: var(--dim);
  max-width: 34em;
}
.fig-text .fig-no {
  color: var(--gold);
}
.fig-read {
  color: var(--line) !important;
  font-style: italic;
  min-height: 3.2em;
}
.sky,
.helens {
  display: block;
  width: min(100%, 560px);
  aspect-ratio: 1;
  margin: 0 auto;
}
.sky {
  border-radius: 50%;
  cursor: ew-resize;
  touch-action: pan-y;
}
.helens {
  border: 1px solid var(--faint);
  outline: 1px solid var(--hair);
  outline-offset: 4px;
}
.control {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  margin: 0.6em 0 0.8em;
  max-width: 30em;
}
.control.seg {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.control button[aria-pressed='true'] {
  border-color: var(--gold);
  color: var(--ink);
  background: var(--gold);
}

.real {
  margin-top: 0.8em;
}
.real button {
  font: inherit;
  color: var(--ink);
  background: var(--gold);
  border: 1px solid var(--gold);
  border-radius: 2px;
  padding: 8px 16px;
  min-height: 44px;
  cursor: pointer;
}
.real button:hover {
  background: transparent;
  color: var(--gold);
}
.real-frame {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--faint);
  background: #000;
}
.real .fine {
  margin-top: 0.7em;
}

/* Plates III to VI */
.charts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(24px, 4vw, 48px);
}
.chart {
  border-top: 1px solid var(--hair);
  padding-top: 20px;
}
.chart.wide {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(20px, 4vw, 56px);
  align-items: center;
}
.chart-text p:not(.plate-no) {
  color: var(--dim);
  max-width: 34em;
}
.art {
  display: block;
  width: 100%;
  max-width: 520px;
  height: auto;
  margin: 0 auto 10px;
  overflow: visible;
}
.art text {
  font-family: var(--serif);
  font-style: italic;
  font-size: 11px;
  fill: var(--dim);
}
.art .tiny {
  font-size: 9.5px;
}
.con-lines path,
.meteors path,
.logrule line,
.survey-dupes path {
  fill: none;
  stroke: var(--line);
  stroke-width: 0.8;
  stroke-opacity: 0.75;
}
.con-lines .gold-line {
  stroke: var(--gold);
  stroke-dasharray: 2 3;
}
.con-stars circle,
.survey-stars circle {
  fill: var(--line);
}
.gold-star {
  fill: var(--gold) !important;
}
.gold-text {
  fill: var(--gold) !important;
}
.runner {
  fill: var(--gold);
  offset-path: path('M60 140 L150 60 L250 90 L190 160 L60 140 L150 60 L250 90 L292 40');
  offset-distance: 100%;
  animation: run 9s linear infinite;
}
@keyframes run {
  from {
    offset-distance: 0%;
  }
  86%,
  to {
    offset-distance: 100%;
  }
}
.meteors path {
  stroke-dasharray: 46 400;
  stroke-dashoffset: 46;
  animation: fall 3.6s ease-in infinite;
}
.meteors path:nth-child(2) {
  animation-delay: 0.7s;
}
.meteors path:nth-child(3) {
  animation-delay: 1.5s;
}
.meteors path:nth-child(4) {
  animation-delay: 2.1s;
}
.meteors path:nth-child(5) {
  animation-delay: 2.8s;
}
@keyframes fall {
  0% {
    stroke-dashoffset: 46;
    stroke-opacity: 0;
  }
  10% {
    stroke-opacity: 0.9;
  }
  60%,
  100% {
    stroke-dashoffset: -200;
    stroke-opacity: 0;
  }
}
.fields rect {
  fill: none;
  stroke: var(--gold);
  stroke-width: 0.8;
}
.fields text {
  font-size: 9.5px;
  fill: var(--line);
}
.log-names text {
  text-anchor: middle;
  font-style: normal;
}
#log-ticks line {
  stroke-opacity: 0.6;
}
.log-index line {
  stroke: var(--gold);
  stroke-width: 1.4;
}
.log-index text {
  fill: var(--gold);
  text-anchor: end;
  font-size: 12px;
}
.log-index {
  animation: slide 2.4s cubic-bezier(0.2, 0.7, 0.2, 1) both;
  animation-timeline: view();
  animation-range: entry 0% cover 45%;
}
@keyframes slide {
  from {
    transform: translateX(-258px);
  }
  to {
    transform: none;
  }
}
.survey-dupes path {
  stroke: var(--gold);
  stroke-opacity: 1;
}
.sweep {
  stroke: var(--gold);
  stroke-width: 0.8;
  animation: sweep 7s linear infinite;
}
@keyframes sweep {
  from {
    transform: translateX(8px);
  }
  to {
    transform: translateX(312px);
  }
}

.index-head {
  margin-top: clamp(32px, 5vw, 56px);
}
.index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 clamp(24px, 4vw, 48px);
}
.index li {
  border-top: 1px solid var(--hair);
  padding: 18px 0 20px;
}
.index li p {
  color: var(--dim);
}
.index li.last {
  grid-column: 1 / -1;
}
.index li.last h3 {
  font-size: 1.15em;
  font-style: italic;
}
.index li.last p {
  font-size: 0.92em;
  max-width: 46em;
}

.sheet.two {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(28px, 5vw, 72px);
}
.sheet.two p {
  color: var(--dim);
  max-width: 34em;
}
.legend,
.bearings {
  list-style: none;
  margin: 0 0 1.2em;
  padding: 0;
  font-size: 1.2em;
}
.legend li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 3px 0;
}
.legend .first {
  color: var(--gold);
}
.mag {
  flex: none;
  width: 18px;
  display: inline-grid;
  place-items: center;
}
.mag::before {
  content: '';
  border-radius: 50%;
  background: currentColor;
}
.m1::before {
  width: 14px;
  height: 14px;
}
.m2::before {
  width: 11px;
  height: 11px;
}
.m3::before {
  width: 8px;
  height: 8px;
}
.m4::before {
  width: 6px;
  height: 6px;
}
.m5::before {
  width: 4px;
  height: 4px;
}
.bearings {
  columns: 2;
  column-gap: 28px;
  font-style: italic;
}
.bearings a {
  display: inline-block;
  padding: 5px 0;
}

.colophon {
  max-width: 60em;
  margin: 0 auto;
  padding: 8px var(--gutter) 56px;
  text-align: center;
  font-size: 0.86em;
  color: var(--dim);
}
.colophon .sc {
  color: var(--gold);
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas: none;
    gap: 0;
  }
  /* The plate comes straight after the name; the prose follows it. */
  .cartouche {
    display: contents;
  }
  .cartouche > *,
  .plate-wrap,
  .stops-wrap {
    grid-area: auto;
  }
  .cartouche > p:not(.plate-no):not(.sub):not(.how) {
    order: 2;
  }
  .cartouche > .how {
    margin-bottom: 14px;
  }
  .stops-wrap {
    order: 3;
    margin-top: 20px;
  }
  .plate-wrap {
    position: relative;
    top: auto;
    order: 1;
    margin-bottom: 28px;
  }
  .plate {
    width: min(100%, 70vh);
  }
}
@media (max-width: 760px) {
  .fig,
  .chart.wide,
  .charts,
  .index,
  .sheet.two {
    grid-template-columns: minmax(0, 1fr);
  }
  .fig.flip .fig-art {
    order: 0;
  }
  .sheet {
    outline-offset: 3px;
  }
  .rule {
    gap: 8px;
  }
  .step {
    padding: 6px 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .runner,
  .meteors path,
  .log-index,
  .sweep {
    animation: none;
  }
  .meteors path {
    stroke-dasharray: none;
    stroke-dashoffset: 0;
  }
  .sweep {
    transform: translateX(160px);
  }
}