@font-face {
  font-family: "EA GuYin Wordmark";
  src: url("./guyin-wordmark.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  unicode-range: U+0041-005A, U+4E1C, U+4E9A, U+5236, U+9020;
}

/* D-027: oversized globe cover; halftone is a globe material, not a newspaper layout. */
.observatory[data-cover="true"] {
  --cover-paper: #f1e8d4;
  --cover-ink: #211e18;
  --focus: #263fbd;
  background: var(--cover-paper);
  color: var(--cover-ink);
}
.observatory[data-cover="true"] .ambient,
.observatory[data-cover="true"] .app-header,
.observatory[data-cover="true"] #workspace > :not(.research-layout),
.observatory[data-cover="true"] .research-feed,
.observatory[data-cover="true"] .atlas-heading,
.observatory[data-cover="true"] .atlas-caption {
  display: none;
}
.observatory[data-cover="true"] .page {
  max-width: none;
  padding: 0;
}
.observatory[data-cover="true"] .research-layout {
  display: block;
  max-width: none;
}
.observatory[data-cover="true"] .atlas-panel {
  position: relative;
  top: auto;
  border: 0;
  background: transparent;
}
.observatory[data-cover="true"] .atlas-stage {
  height: max(720px, 100svh);
  overflow: hidden;
}
.observatory[data-cover="true"] #atlas-frame {
  width: 100%;
  height: 100%;
  border: 0;
  background: var(--cover-paper);
}
.atlas-cover {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  color: var(--cover-ink);
  font-family: var(--ui-font);
}

.cover-copy {
  position: absolute;
  top: clamp(150px, 21vh, 260px);
  left: clamp(32px, 7vw, 130px);
  width: min(34vw, 480px);
}

#cover-title {
  display: grid;
  gap: 18px;
  margin: 0 0 28px;
  color: var(--cover-ink);
}
.cover-title-zh {
  font:
    400 clamp(50px, 5.5vw, 84px)/1.18 "EA GuYin Wordmark",
    "Songti SC",
    "STSong",
    serif;
  letter-spacing: 0.08em;
  font-synthesis: none;
}
.cover-title-en {
  display: grid;
  font:
    400 clamp(58px, 5.5vw, 86px)/0.98 "EA GuYin Wordmark",
    "Iowan Old Style",
    "Times New Roman",
    serif;
  letter-spacing: 0.012em;
  font-synthesis: none;
  text-transform: uppercase;
}
.cover-title-en > span:last-child {
  font-size: 0.54em;
  line-height: 1.35;
  letter-spacing: 0.045em;
}
.cover-enter {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  min-height: 54px;
  padding: 8px 10px 8px 22px;
  border: 1px solid var(--cover-ink);
  border-radius: 999px;
  background: var(--cover-ink);
  color: var(--cover-paper);
  font: 500 16px/1.5 var(--ui-font);
  cursor: pointer;
  pointer-events: auto;
  transition: background 160ms ease;
}
.cover-enter > span {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid #f1e8d470;
  border-radius: 50%;
  font-size: 23px;
  transition: transform 180ms ease;
}
.cover-enter:hover {
  background: #40392c;
}
.cover-enter:hover > span {
  transform: rotate(45deg);
}
.cover-enter:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 5px;
}
.observatory[data-cover="true"] .atlas-fallback {
  inset: auto 30px 110px auto;
  z-index: 3;
  width: min(400px, calc(100% - 60px));
  padding: 24px;
  border: 1px solid #b2a995;
  background: var(--cover-paper);
  color: var(--cover-ink);
  font: 14px/1.8 var(--ui-font);
}
#atlas-cover-return {
  margin-left: auto;
  font-size: 12px;
  min-height: 44px;
}
@media (min-width: 761px) and (aspect-ratio > 1/1) {
  .observatory[data-cover-title="sculpture"] .cover-copy {
    top: auto;
    bottom: max(clamp(30px, 5vh, 72px), calc(720px - 100svh + 30px));
    left: clamp(28px, 4.5vw, 80px);
    width: min(38vw, 560px);
  }
  .observatory[data-cover-title="sculpture"] #cover-title {
    gap: 12px;
    margin-bottom: 24px;
  }
  .observatory[data-cover-title="sculpture"] .cover-title-zh {
    display: block;
    height: max(270px, calc(100svh - 230px));
    line-height: 1.4;
    pointer-events: none;
  }
  .observatory[data-cover-title="sculpture"][data-sculpture-ready="true"]
    .cover-title-zh {
    color: transparent;
  }
  .observatory[data-cover-title="sculpture"] .cover-title-en {
    display: flex;
    flex-wrap: wrap;
    gap: 0 0.55em;
    max-width: 220px;
    align-self: start;
    background: var(--cover-paper);
    font: 500 clamp(12px, 1.08vw, 18px)/1.5 var(--ui-font);
    letter-spacing: 0.14em;
  }
  .observatory[data-cover-title="sculpture"] .cover-title-en > span:last-child {
    font-size: 1em;
    line-height: inherit;
    letter-spacing: inherit;
  }
  .cover-copy {
    width: min(38vw, 540px);
  }
  #cover-title {
    gap: 20px;
    margin-bottom: 30px;
  }
  .cover-title-zh {
    font-size: clamp(54px, 6.8vw, 116px);
  }
  .cover-title-en {
    font-size: clamp(34px, 4vw, 68px);
    line-height: 1.08;
  }
  .cover-title-en > span:last-child {
    font-size: 0.57em;
    line-height: 1.45;
  }
}
@media (min-width: 761px) and (aspect-ratio > 1/1) and (hover: hover) and (pointer: fine) and (prefers-reduced-motion: no-preference) {
}
@media (max-width: 760px), (max-aspect-ratio: 1/1) {
  .observatory[data-cover="true"] .atlas-stage {
    height: max(780px, 100svh);
  }

  .cover-copy {
    top: 122px;
    left: 28px;
    width: calc(100% - 56px);
  }
  #cover-title {
    gap: 14px;
    margin-bottom: 24px;
  }
  .cover-title-zh {
    font-size: clamp(44px, 11.5vw, 60px);
  }
  .cover-title-en {
    font-size: clamp(46px, 12.4vw, 66px);
  }
  .cover-enter {
    min-height: 48px;
    padding-block: 7px;
  }
  .cover-enter > span {
    width: 30px;
    height: 30px;
  }
  .observatory[data-cover="true"][data-cover-title="sculpture"] .atlas-stage {
    height: 100svh;
  }
  .observatory[data-cover-title="sculpture"] .cover-copy {
    top: auto;
    bottom: max(20px, env(safe-area-inset-bottom));
    left: max(24px, env(safe-area-inset-left));
    width: calc(100% - 48px);
  }
  .observatory[data-cover-title="sculpture"] #cover-title {
    gap: 12px;
    margin-bottom: 16px;
  }
  .observatory[data-cover-title="sculpture"] .cover-title-zh {
    font-size: clamp(38px, 10vw, 54px);
    pointer-events: none;
  }
  /* Keep an accessible title, but do not repeat the rendered glyph sculpture. */
  .observatory[data-cover-title="sculpture"][data-sculpture-ready="true"]
    .cover-title-zh {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
  }
  .observatory[data-cover-title="sculpture"] .cover-title-en,
  .observatory[data-cover-title="sculpture"] .cover-enter {
    display: none;
  }
}
@media (prefers-reduced-motion: reduce) {
  .cover-enter,
  .cover-enter > span {
    transition: none;
  }
  .cover-enter:hover > span {
    transform: none;
  }
}
html,
body {
  margin: 0;
}
* {
  box-sizing: border-box;
}
body {
  --ui-font:
    -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC",
    "Microsoft YaHei", sans-serif;
}
.atlas-panel {
  position: relative;
}
#atlas-frame {
  display: block;
}
/* Keep the complete stage rendering at full size, but reveal it as one unit
   only after the original bridge accepts a current rendered acknowledgement. */
body[data-cover-state="ready"] .atlas-stage {
  opacity: 1;
  pointer-events: auto;
  transition: opacity 650ms ease-out;
}
@media (prefers-reduced-motion: reduce) {
  body[data-cover-state="ready"] .atlas-stage {
    transition: none;
  }
}
.cover-enter {
  text-decoration: none;
}
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 10;
  padding: 12px;
  color: #211e18;
  background: #f1e8d4;
  transform: translateY(-200%);
}
.skip-link:focus {
  transform: none;
}
.cover-error {
  position: absolute;
  z-index: 4;
  left: 24px;
  bottom: 24px;
  max-width: calc(100% - 48px);
  padding: 18px;
  background: #f1e8d4;
  color: #211e18;
  font: 16px/1.7 var(--ui-font);
}
.cover-error a {
  color: inherit;
}