:root {
  color-scheme: light;
  --paper: #ece7db;
  --paper-light: #f3efe5;
  --ink: #20251f;
  --ink-soft: #64675c;
  --water: #345d6e;
  --water-light: #75939c;
  --moss: #747c6e;
  --sand: #b7a47f;
  --seal: #9d3d31;
  --line: rgba(32, 37, 31, 0.2);
  --cn: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  --en: "Caudex", Georgia, serif;
  --label: "Ysabeau", sans-serif;
}

* { box-sizing: border-box; }

html,
body {
  min-width: 320px;
  min-height: 100%;
}

body {
  margin: 0;
  overflow: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 45% 46%, rgba(255, 255, 255, .55), transparent 34rem),
    var(--paper);
  font-family: var(--cn);
}

body[data-language="en"] {
  font-family: var(--en);
}

button,
a { color: inherit; }

button { font: inherit; }

.paper-noise {
  position: fixed;
  inset: 0;
  z-index: 40;
  pointer-events: none;
  opacity: .085;
  background: url("../assets/paper-grain.svg");
  mix-blend-mode: multiply;
}

.atlas-experience {
  position: relative;
  height: 100vh;
  padding-top: 72px;
}

.atlas-intro {
  position: absolute;
  z-index: 7;
  top: 100px;
  left: 5vw;
  width: min(1000px, 90vw);
  pointer-events: none;
}

.cta-callout {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  max-width: 320px;
  margin: 22px 0 0;
  padding: 12px 16px;
  border: 1px solid rgba(157, 61, 49, .38);
  background: rgba(250, 247, 240, .94);
  transition: opacity .4s ease, transform .4s ease;
}

.cta-arrow {
  width: 26px;
  flex-shrink: 0;
  margin-top: 2px;
  fill: none;
  stroke: var(--seal);
  stroke-width: 1.3;
}

.cta-text {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.cta-text strong {
  color: var(--seal);
  font: 700 13.5px var(--label);
  font-style: normal;
  letter-spacing: .1em;
}

.cta-text em {
  color: var(--ink-soft);
  font: 13.5px var(--label);
  font-style: normal;
  letter-spacing: .07em;
}

.atlas-intro h1 {
  margin: 0;
  font-size: clamp(22px, 5.2vw, 52px);
  font-weight: 400;
  line-height: 1.18;
  letter-spacing: .06em;
  white-space: nowrap;
}

.atlas-intro h1 span { display: inline; }

.atlas-intro h1 .question-accent {
  color: var(--seal);
  position: relative;
  display: inline-block;
}

.title-fireflies { position: absolute; inset: 0; pointer-events: none; }
.chapter-label-leader {
  fill: none; stroke: #8b1820; stroke-width: 1;
  vector-effect: non-scaling-stroke; opacity: .85; pointer-events: none;
}
.title-fireflies i {
  position: absolute; width: 4px; height: 4px; border-radius: 50%;
  background: #ffe3a2; box-shadow: 0 0 6px 2px #e6b96199;
  opacity: .25; animation: title-firefly 4.8s ease-in-out infinite;
}
.title-fireflies i:nth-child(1) { left: 8%; top: 8%; animation-delay: -1s; }
.title-fireflies i:nth-child(2) { left: 68%; top: -12%; animation-delay: -3.4s; }
.title-fireflies i:nth-child(3) { left: 96%; top: 66%; animation-delay: -4.8s; }
.title-fireflies i:nth-child(4) { left: 35%; top: 95%; animation-delay: -2.2s; }
@keyframes title-firefly {
  0%, 100% { opacity: .12; transform: translate(-4px, 4px) scale(.7); }
  35% { opacity: .95; transform: translate(3px, -5px) scale(1); }
  65% { opacity: .45; transform: translate(10px, -12px) scale(.8); }
  82% { opacity: .8; transform: translate(2px, -3px) scale(1); }
}
@media (prefers-reduced-motion: reduce) {
  .atlas-intro h1 .title-fireflies { display: none; }
}

body[data-language="en"] .atlas-intro h1 {
  font-family: var(--en);
  font-size: clamp(15px, 3.2vw, 46px);
  font-weight: 400;
  font-style: normal;
  line-height: 1.05;
  letter-spacing: -.025em;
}

body[data-language="en"] .atlas-intro .question-tail::before {
  content: " ";
}

.atlas-map-stage {
  position: absolute;
  inset: 72px 0 28px;
  overflow: hidden;
}

.china-map {
  position: absolute;
  inset: 3% 1% -2% 1%;
  width: 98%;
  height: 99%;
  overflow: visible;
  transform-origin: 53% 64%;
  transition:
    transform 1.25s cubic-bezier(.72, 0, .25, 1),
    opacity .7s ease;
}

.river-skeleton path {
  fill: none;
  stroke: rgba(52, 93, 110, .44);
  stroke-linecap: round;
}

.yellow-river path { stroke-width: 4; }
.yangtze-river path { stroke-width: 6; }
.secondary-rivers path {
  stroke-width: 1.35;
  opacity: .1;
  transition: opacity 1.2s ease, stroke-width 1.2s ease;
}

body.dujiangyan-complete .secondary-rivers path[data-river="min"] {
  stroke-width: 2.5;
  opacity: .58;
}

.map-text,
.route-label {
  fill: var(--ink-soft);
  font-family: var(--cn);
  font-size: 16px;
  letter-spacing: .18em;
  paint-order: stroke;
  stroke: rgba(236, 231, 219, .94);
  stroke-width: 3px;
  stroke-linejoin: round;
}

.map-text.en,
.route-label.en {
  font-family: var(--label);
  font-size: 12px;
  letter-spacing: .16em;
}

.vertical { writing-mode: vertical-rl; }

.ancient-routes path {
  fill: none;
  stroke: rgba(92, 83, 64, .27);
  stroke-width: 1.2;
  stroke-dasharray: 2 8;
}

.route-label { font-size: 13px; }
.route-label.en { font-size: 11px; }

.story-point {
  cursor: pointer;
  outline: none;
}

.story-point .point-glow {
  fill: url("#story-glow");
  opacity: .22;
  transition: opacity .4s ease;
}

.story-point .point-core {
  fill: var(--seal);
  stroke: var(--paper);
  stroke-width: 1.5;
}

.story-point .point-pulse,
.story-point .point-orbit {
  fill: none;
  stroke: var(--seal);
  stroke-width: 1;
  transform-box: fill-box;
  transform-origin: center;
}

.point-archive-mark {
  fill: none;
  stroke: var(--seal);
  stroke-width: 1;
  pointer-events: none;
}

.story-point .point-pulse {
  animation: atlas-pulse 2.4s ease-out infinite;
}

@keyframes atlas-pulse {
  0% { opacity: .7; transform: scale(.45); }
  100% { opacity: 0; transform: scale(2.6); }
}

.point-number {
  fill: var(--seal);
  font: 10px var(--label);
  letter-spacing: .14em;
  paint-order: stroke;
  stroke: rgba(236, 231, 219, .94);
  stroke-width: 2.5px;
  stroke-linejoin: round;
}

.point-clue {
  fill: var(--ink);
  font-family: var(--cn);
  font-size: 15px;
  letter-spacing: .13em;
  paint-order: stroke;
  stroke: rgba(236, 231, 219, .96);
  stroke-width: 3px;
  stroke-linejoin: round;
}

.point-clue.en {
  font: 12px var(--label);
  letter-spacing: .15em;
}

/* One language at a time. Every paired label carries lang="zh" or lang="en"; the one for the other
   language is removed whatever else styles it, so both can never show together. */
body[data-language="zh"] [lang="en"],
body[data-language="en"] [lang="zh"] {
  display: none !important;
}

.story-point.quiet .point-clue,
.story-point.quiet .point-number {
  opacity: .18;
  transition: opacity .35s ease;
}

.story-point.quiet .point-core { opacity: .42; }

.story-point:hover .point-glow { opacity: .72; }
.story-point.quiet:hover .point-clue,
.story-point.quiet:hover .point-number { opacity: .8; }

.story-point.primary .point-clue {
  font-size: 17px;
}

.story-point.available .point-clue {
  font-size: 16px;
}

.story-point.available .point-glow {
  opacity: .34;
}

.story-point .complete { display: none; }

body.my-hometown-complete .story-point[data-story="my-hometown"] .unread {
  display: none;
}

body.my-hometown-complete .story-point[data-story="my-hometown"] .complete {
  display: block;
}

body.dujiangyan-complete .story-point[data-story="dujiangyan"] .unread {
  display: none;
}

body.dujiangyan-complete .story-point[data-story="dujiangyan"] .complete {
  display: block;
}

body.secret-spring-complete .story-point[data-story="secret-spring"] .unread {
  display: none;
}

body.secret-spring-complete .story-point[data-story="secret-spring"] .complete {
  display: block;
}

body.taoist-tower-complete .story-point[data-story="taoist-tower"] .unread {
  display: none;
}

body.taoist-tower-complete .story-point[data-story="taoist-tower"] .complete {
  display: block;
}

body.chengde-complete .story-point[data-story="chengde"] .unread {
  display: none;
}

body.chengde-complete .story-point[data-story="chengde"] .complete {
  display: block;
}

body.yangguan-complete .story-point[data-story="yangguan"] .unread {
  display: none;
}

body.yangguan-complete .story-point[data-story="yangguan"] .complete {
  display: block;
}

body.mogao-caves-complete .story-point[data-story="mogao-caves"] .unread {
  display: none;
}

body.mogao-caves-complete .story-point[data-story="mogao-caves"] .complete {
  display: block;
}

body.fish-tail-lodge-complete .story-point[data-story="fish-tail-lodge"] .unread {
  display: none;
}

body.fish-tail-lodge-complete .story-point[data-story="fish-tail-lodge"] .complete {
  display: block;
}

/* Chapter callout: placed next to the hovered dot by atlas.js (left/top, data-side, --tip). It takes no layout space. */
.chapter-preview {
  --callout-bg: rgba(243, 239, 229, .97);
  --callout-line: rgba(157, 61, 49, .38);
  position: absolute;
  z-index: 9;
  left: 0;
  top: 0;
  width: min(280px, calc(100% - 24px));
  padding: 14px 18px 12px;
  border: 1px solid var(--callout-line);
  background: var(--callout-bg);
  box-shadow: 0 16px 44px rgba(41, 38, 29, .14);
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  pointer-events: none;
  transition:
    opacity .28s ease,
    transform .28s ease,
    visibility .28s;
}

.chapter-preview[data-side="above"] { transform: translateY(-6px); }
.chapter-preview[data-side="left"] { transform: translateX(6px); }
.chapter-preview[data-side="right"] { transform: translateX(-6px); }

.chapter-preview.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
  pointer-events: auto;
}

/* touch: a card may sit on top of a neighbouring dot, so only its button captures taps */
@media (hover: none) {
  .chapter-preview.is-visible { pointer-events: none; }
  .chapter-preview.is-visible .enter-story { pointer-events: auto; }
}

/* pointer toward the dot: a rotated square showing two borders */
.chapter-preview::before {
  content: "";
  position: absolute;
  width: 11px;
  height: 11px;
  background: var(--callout-bg);
  border: 0 solid var(--callout-line);
  transform: rotate(45deg);
}

.chapter-preview[data-side="below"]::before {
  top: -6px;
  left: var(--tip, 50%);
  margin-left: -6px;
  border-width: 1px 0 0 1px;
}

.chapter-preview[data-side="above"]::before {
  bottom: -6px;
  left: var(--tip, 50%);
  margin-left: -6px;
  border-width: 0 1px 1px 0;
}

.chapter-preview[data-side="left"]::before {
  right: -6px;
  top: var(--tip, 50%);
  margin-top: -6px;
  border-width: 1px 1px 0 0;
}

.chapter-preview[data-side="right"]::before {
  left: -6px;
  top: var(--tip, 50%);
  margin-top: -6px;
  border-width: 0 0 1px 1px;
}

/* dotted leader from the pointer to the dot, only when the card sits farther off (--lead > 0) */
.chapter-preview::after {
  content: "";
  position: absolute;
  border: 0 dotted var(--callout-line);
}

.chapter-preview[data-side="below"]::after {
  left: var(--tip, 50%);
  bottom: 100%;
  height: var(--lead, 0px);
  margin-bottom: 6px;
  border-left-width: 1px;
}

.chapter-preview[data-side="above"]::after {
  left: var(--tip, 50%);
  top: 100%;
  height: var(--lead, 0px);
  margin-top: 6px;
  border-left-width: 1px;
}

.chapter-preview[data-side="left"]::after {
  top: var(--tip, 50%);
  left: 100%;
  width: var(--lead, 0px);
  margin-left: 6px;
  border-top-width: 1px;
}

.chapter-preview[data-side="right"]::after {
  top: var(--tip, 50%);
  right: 100%;
  width: var(--lead, 0px);
  margin-right: 6px;
  border-top-width: 1px;
}

.preview-index {
  margin: 0;
  color: var(--seal);
  font: 13.5px var(--label);
  letter-spacing: .16em;
}

.chapter-preview h2 {
  margin: 8px 0 7px;
  font-size: 24px;
  font-weight: 400;
  letter-spacing: .1em;
}

body[data-language="en"] .chapter-preview h2 {
  font: 21px var(--en);
  letter-spacing: -.02em;
}

.chapter-preview > p:not(.preview-index) {
  margin: 0 0 12px;
  color: var(--ink-soft);
  font-size: 13.5px;
  line-height: 1.8;
  letter-spacing: .08em;
}

body[data-language="en"] .chapter-preview > p:not(.preview-index) {
  font: 14px/1.55 var(--en);
  letter-spacing: 0;
}

.enter-story {
  appearance: none;
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 8px 0;
  border: 0;
  border-bottom: 1px solid var(--ink);
  background: none;
  font-size: 13.5px;
  letter-spacing: .15em;
  cursor: pointer;
}

.enter-story svg {
  width: 45px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1;
}

.unavailable-note {
  position: absolute;
  z-index: 12;
  left: 50%;
  bottom: 65px;
  padding: 10px 16px;
  color: var(--paper);
  background: var(--ink);
  font-size: 13.5px;
  letter-spacing: .14em;
  opacity: 0;
  transform: translate(-50%, 8px);
  pointer-events: none;
  transition: opacity .25s ease, transform .25s ease;
}

.unavailable-note.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.reveal-receipt {
  position: fixed;
  z-index: 55;
  top: calc(var(--site-header-height, 72px) + 22px);
  right: 30px;
  display: grid;
  grid-template-columns: 54px minmax(190px, 1fr);
  gap: 14px;
  align-items: center;
  width: min(390px, calc(100vw - 40px));
  min-height: 86px;
  padding: 14px 20px 14px 16px;
  border: 1px solid rgba(118, 75, 53, .72);
  border-radius: 3px 12px 12px 3px;
  background:
    radial-gradient(circle at 16% 22%, rgba(255,255,255,.38), transparent 24%),
    repeating-linear-gradient(0deg, rgba(114,76,53,.045) 0 1px, transparent 1px 4px),
    #e8ddc5;
  box-shadow: 0 18px 32px rgba(25, 28, 25, .22), inset 0 0 0 2px rgba(255,255,255,.18), inset 0 0 22px rgba(105, 70, 44, .17);
  opacity: 0;
  transform: translateX(0) scaleX(1);
  transform-origin: right center;
  pointer-events: none;
  overflow: visible;
  will-change: transform, opacity;
  transition: opacity .35s ease;
}

.reveal-receipt::before,
.reveal-receipt::after {
  content: "";
  position: absolute;
  top: -7px;
  bottom: -7px;
  width: 17px;
  border: 1px solid rgba(104, 65, 43, .65);
  background: linear-gradient(90deg, #b78a62, #ead9ba 48%, #9a6848);
  box-shadow: 0 5px 9px rgba(45, 34, 27, .2);
  z-index: -1;
}

.reveal-receipt::before {
  left: -9px;
  border-radius: 50% 4px 4px 50%;
  transform: rotate(-1deg);
}

.reveal-receipt::after {
  right: -9px;
  border-radius: 4px 50% 50% 4px;
  transform: rotate(1deg);
}

body.is-returning .reveal-receipt {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
  animation: scroll-unfurl 1s cubic-bezier(.2,.78,.22,1) both;
}

@keyframes scroll-unfurl {
  0% { opacity: 0; transform: translateX(115%) scaleX(.18); }
  58% { opacity: 1; transform: translateX(-3%) scaleX(1.035); }
  78% { transform: translateX(1%) scaleX(.985); }
  100% { opacity: 1; transform: translateX(0) scaleX(1); }
}

.receipt-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 2px solid var(--seal);
  color: var(--seal);
  font-size: 25px;
}

.reveal-receipt p {
  margin: 0 0 5px;
  color: var(--seal);
  font-size: 14px;
  letter-spacing: .15em;
}

.reveal-receipt strong {
  font-size: 13.5px;
  font-weight: 400;
  letter-spacing: .07em;
}

body[data-seal-collection="flying"] .site-progress {
  animation: seal-target-pulse .45s ease-in-out infinite alternate;
}

@keyframes seal-target-pulse {
  from { transform: translateX(0); }
  to { transform: translateX(3px); }
}

.stamp-overlay {
  position: fixed;
  z-index: 60;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(32, 37, 31, .55);
  backdrop-filter: blur(2px);
  opacity: 0;
  transition: opacity .26s ease;
}

.stamp-overlay:not(.is-visible) { pointer-events: none; }

.stamp-overlay.is-visible { opacity: 1; }

.stamp-modal {
  position: relative;
  width: min(560px, 100%);
  min-width: 0;
  max-height: 82vh;
  overflow-y: auto;
  padding: 34px 30px 30px;
  border: 1px solid var(--line);
  background: var(--paper-light);
  box-shadow: 0 24px 70px rgba(41, 38, 29, .25);
  transform: translateY(14px) scale(.98);
  transition: transform .3s ease;
}

.stamp-overlay.is-visible .stamp-modal {
  transform: none;
}

.stamp-close {
  position: absolute;
  top: 16px;
  right: 16px;
  appearance: none;
  padding: 4px;
  border: 0;
  background: none;
  color: var(--ink-soft);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}

.stamp-close:hover,
.stamp-close:focus-visible {
  color: var(--seal);
}

.stamp-kicker {
  margin: 0 0 10px;
  color: var(--seal);
  font: 600 13.5px var(--label);
  letter-spacing: .16em;
}

.stamp-modal h2 {
  margin: 0 0 12px;
  font-size: 26px;
  font-weight: 400;
  letter-spacing: .12em;
}

.stamp-desc {
  max-width: 40em;
  margin: 0 0 6px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.8;
  letter-spacing: .06em;
}

.stamp-count {
  margin: 0 0 22px;
  color: var(--ink-soft);
  font: 600 13.5px var(--label);
  letter-spacing: .12em;
}

.stamp-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px 18px;
}

.stamp-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  text-align: center;
}

.stamp-mark {
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  border: 2px dashed var(--line);
  color: var(--ink-soft);
  font-size: 26px;
}

.stamp-card.is-unlocked .stamp-mark {
  border-style: solid;
  border-color: var(--seal);
  background: rgba(157, 61, 49, .06);
  color: var(--seal);
}

.stamp-name {
  font-size: 14px;
  letter-spacing: .1em;
  color: var(--ink);
}

.stamp-card:not(.is-unlocked) .stamp-name {
  color: var(--ink-soft);
}

.stamp-line {
  font-size: 13.5px;
  line-height: 1.6;
  letter-spacing: .05em;
  color: var(--ink-soft);
}

.stamp-card:not(.is-unlocked) .stamp-line {
  font-style: italic;
  opacity: .9;
}

.view-stamps {
  display: none;
}

.atlas-footer {
  position: fixed;
  inset: auto 0 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 26px;
  height: 38px;
  padding: 0 38px;
  border-top: 1px solid var(--line);
  background: rgba(236, 231, 219, .9);
  color: var(--ink-soft);
  font: 13.5px var(--label);
  letter-spacing: .07em;
}

.atlas-citation {
  margin-right: auto;
}

.atlas-map-source {
  color: var(--ink-soft);
  font-family: var(--label);
  font-size: 11px;
  letter-spacing: 0.04em;
}

.reset-progress {
  appearance: none;
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  cursor: pointer;
}

@media (max-width: 900px) {
  body { overflow-y: auto; }

  .atlas-experience {
    height: auto;
    min-height: 100vh;
    padding-top: 64px;
  }

  .atlas-intro {
    position: relative;
    top: auto;
    left: auto;
    width: auto;
    padding: 25px 22px 0;
  }

  .atlas-map-stage {
    position: relative;
    inset: auto;
    height: 76vh;
    min-height: 560px;
    margin-top: -10px;
    overflow-x: auto;
    overflow-y: hidden;
    overscroll-behavior-x: contain;
    scrollbar-color: var(--ink-soft) transparent;
    scrollbar-width: thin;
  }

  .china-map {
    inset: 0;
    width: 100%;
    height: 100%;
  }

  .atlas-footer {
    position: static;
    justify-content: flex-end;
    gap: 16px;
    height: 40px;
    padding: 0 18px;
    font-size: 13.5px;
  }

  .atlas-citation {
    display: none;
  }

  .view-stamps {
    display: block;
    appearance: none;
    padding: 0;
    border: 0;
    background: none;
    color: var(--seal);
    cursor: pointer;
  }

  .reveal-receipt {
    position: fixed;
    top: calc(var(--site-header-height, 64px) + 16px);
    right: 14px;
    bottom: auto;
    width: min(360px, calc(100vw - 28px));
    grid-template-columns: 44px minmax(0, 1fr);
    padding: 12px 15px 12px 12px;
  }

  .stamp-modal {
    padding: 28px 20px 24px;
  }
}

@media (max-width: 520px) {

  .atlas-map-stage {
    height: 66vh;
    min-height: 480px;
  }

  /* A phone keeps the map near the desktop scale, so its labels stay at 10pt without crowding,
     and the map scrolls sideways (atlas.js starts it centred on the chapters). */
  .atlas-map-stage {
    overflow-x: auto;
    overflow-y: hidden;
    overscroll-behavior-x: contain;
    scrollbar-width: none;
  }

  .atlas-map-stage::-webkit-scrollbar { display: none; }

  .china-map {
    inset: 0 auto 0 0;
    width: 880px;
  }

  .chapter-preview {
    width: min(232px, calc(100% - 24px));
    padding: 12px 14px 10px;
  }

  .chapter-preview h2 {
    margin: 6px 0 5px;
    font-size: 21px;
  }

  body[data-language="en"] .chapter-preview h2 { font-size: 19px; }

  .reset-progress,
  .view-stamps { font-size: 13.5px; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}

/* English typography: Caudex for editorial text, Ysabeau for interface text. */
body[data-language="en"] :is(
  .enter-story,
  .unavailable-note,
  .reset-progress,
  .reveal-receipt button,
  .view-stamps,
  .stamp-kicker,
  .stamp-count,
  .stamp-close
) {
  font-family: var(--label);
  font-weight: 600;
}

body[data-language="en"] :is(
  .atlas-progress,
  .atlas-language,
  .map-text.en,
  .route-label.en,
  .point-number,
  .point-clue.en,
  .preview-index,
  .enter-story,
  .unavailable-note,
  .atlas-footer
) {
  letter-spacing: .08em;
}

/* Readable type scale based on Material's label/body hierarchy. */
.route-label.en {
  font-size: 13px;
}

.point-number {
  font-size: 12px;
}

.point-clue.en {
  font-size: 14px;
  font-weight: 600;
}

.preview-index,
.unavailable-note {
  font-size: 14px;
  line-height: 1.4;
}

.chapter-preview > p:not(.preview-index) {
  font-size: 14px;
  line-height: 1.65;
}

body[data-language="en"] .chapter-preview > p:not(.preview-index) {
  font: 15px/1.6 var(--en);
}

.enter-story {
  min-height: 40px;
  font-size: 14px;
}

.reveal-receipt p,
.reveal-receipt strong {
  font-size: 14px;
  line-height: 1.4;
}

.atlas-footer {
  font-size: 14px;
}

@media (max-width: 900px) {
  .atlas-intro {
    width: 100%;
  }

  .atlas-footer {
    font-size: 14px;
  }
}

@media (max-width: 520px) {
  .reset-progress,
  .view-stamps {
    font-size: 14px;
  }
}

/* Kashgar remains visible after reading. */
body.kashgar-complete [data-story="kashgar"] .point-core { fill: var(--cinnabar, #944b39); r: 6px; }
body.kashgar-complete [data-story="kashgar"] .point-glow { opacity: .3; }

[data-story="kashgar"] .complete,body.kashgar-complete [data-story="kashgar"] .unread{display:none}
body.kashgar-complete[data-language="zh"] [data-story="kashgar"] .complete.cn,body.kashgar-complete[data-language="en"] [data-story="kashgar"] .complete.en{display:block}

.receipt-mark.has-seal{border:0;background:none;flex-shrink:0}.receipt-mark.has-seal img{width:50px;height:50px;display:block}

/* Homepage previews contain only a question and its invitation. */
.chapter-preview > p[data-copy="preview-text"] { font-size: 17px; line-height: 1.75; letter-spacing: .025em; margin: 0 0 22px; }
body[data-language="en"] .chapter-preview > p[data-copy="preview-text"] { font-size: 19px; line-height: 1.5; }
.stamp-mark.has-seal { border: 0; background: none; }
.stamp-mark.has-seal img { display: block; width: 52px; height: 52px; }

.stamp-overlay[hidden] { display: none; }

/* 阳关雪: the drawn seal stays on the map after reading, as with Kashgar. */

/* A read chapter's dot settles like Kashgar's: a larger, still cinnabar dot, no pulse. */
body.my-hometown-complete [data-story="my-hometown"] .point-core,
body.dujiangyan-complete [data-story="dujiangyan"] .point-core,
body.secret-spring-complete [data-story="secret-spring"] .point-core,
body.taoist-tower-complete [data-story="taoist-tower"] .point-core,
body.chengde-complete [data-story="chengde"] .point-core,
body.yangguan-complete [data-story="yangguan"] .point-core,
body.fish-tail-lodge-complete [data-story="fish-tail-lodge"] .point-core,
body.mogao-caves-complete [data-story="mogao-caves"] .point-core {
  fill: var(--cinnabar, #944b39);
  r: 6px;
}
body.my-hometown-complete [data-story="my-hometown"] .point-glow,
body.dujiangyan-complete [data-story="dujiangyan"] .point-glow,
body.secret-spring-complete [data-story="secret-spring"] .point-glow,
body.taoist-tower-complete [data-story="taoist-tower"] .point-glow,
body.chengde-complete [data-story="chengde"] .point-glow,
body.yangguan-complete [data-story="yangguan"] .point-glow,
body.fish-tail-lodge-complete [data-story="fish-tail-lodge"] .point-glow,
body.mogao-caves-complete [data-story="mogao-caves"] .point-glow {
  opacity: .3;
}
body.my-hometown-complete [data-story="my-hometown"] .point-pulse,
body.kashgar-complete [data-story="kashgar"] .point-pulse,
body.dujiangyan-complete [data-story="dujiangyan"] .point-pulse,
body.secret-spring-complete [data-story="secret-spring"] .point-pulse,
body.taoist-tower-complete [data-story="taoist-tower"] .point-pulse,
body.chengde-complete [data-story="chengde"] .point-pulse,
body.yangguan-complete [data-story="yangguan"] .point-pulse,
body.fish-tail-lodge-complete [data-story="fish-tail-lodge"] .point-pulse,
body.dujiangyan-complete [data-story="dujiangyan"] .point-orbit,
body.secret-spring-complete [data-story="secret-spring"] .point-orbit,
body.taoist-tower-complete [data-story="taoist-tower"] .point-orbit,
body.chengde-complete [data-story="chengde"] .point-orbit,
body.yangguan-complete [data-story="yangguan"] .point-orbit,
body.fish-tail-lodge-complete [data-story="fish-tail-lodge"] .point-orbit,
body.dujiangyan-complete [data-story="dujiangyan"] .point-archive-mark,
body.secret-spring-complete [data-story="secret-spring"] .point-archive-mark,
body.taoist-tower-complete [data-story="taoist-tower"] .point-archive-mark,
body.chengde-complete [data-story="chengde"] .point-archive-mark,
body.yangguan-complete [data-story="yangguan"] .point-archive-mark,
body.fish-tail-lodge-complete [data-story="fish-tail-lodge"] .point-archive-mark,
body.mogao-caves-complete [data-story="mogao-caves"] .point-pulse,
body.mogao-caves-complete [data-story="mogao-caves"] .point-orbit {
  display: none;
  animation: none;
}

/* 莫高窟 */

/* 鱼尾山屋 */


/* One seal per read chapter (docs/map-guidance.md M-4, M-7): the same image seal the chapter uses, placed by
   atlas.js next to its dot where it covers no label, dot or other seal; stamped in when the reader returns. */
.chapter-seal { opacity: 0; pointer-events: none; transition: opacity 1.3s; }
.chapter-seal.is-shown { opacity: .9; }

.chapter-seal { transform-box:fill-box; transform-origin:center; }
.chapter-seal.is-reveal-pending { opacity:0; transition:none; }
.chapter-seal.is-stamping { transition:none; }