:root {
  color-scheme: dark;
  --ink:#050a0e;
  --silver:#d8dfdf;
  --muted:#9caeb4;
  --line:rgba(183,206,216,.19);
}
* {
  box-sizing: border-box;
}
html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--ink);
  color: var(--silver);
  font-family:
    "PingFang TC",
    "Heiti TC",
    sans-serif;
}
body {
  padding: 0 0 max(32px, env(safe-area-inset-bottom));
  background:
    linear-gradient(
      180deg,
      #09131b 0,
      #050a0e 650px);
}
#brand-mark {
  display: block;
  width: 130px;
  height: auto;
  margin: 28px auto 0;
  opacity: .88;
}
main {
  width: min(100%, 660px);
  margin: auto;
  padding: 44px 28px 0;
  text-align: center;
}
.eyebrow {
  font-size: 10px;
  letter-spacing: .3em;
  color: var(--muted);
}
h1 {
  font-family:
    "Songti TC",
    "PMingLiU",
    serif;
  font-weight: 400;
  font-size: 34px;
  line-height: 1.6;
  letter-spacing: .18em;
  margin: 22px 0 24px;
}
.no {
  font-size: 11px;
  letter-spacing: .18em;
  color: #acc3cd;
  font-variant-numeric: tabular-nums;
}
.desc {
  font-size: 14px;
  line-height: 1.9;
  letter-spacing: .08em;
  margin: 12px 0 28px;
  min-height: 27px;
}
#stage-wrap {
  width: 100%;
  aspect-ratio: 1;
  position: relative;
  background: #020609;
  border: 1px solid var(--line);
  overflow: hidden;
}
#stage {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
  opacity: 0;
  transition: opacity 1.2s ease;
}
.ready #stage {
  opacity: 1;
}
#stage-status {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  background: #050a0e;
  pointer-events: none;
  transition: opacity .7s ease;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: .18em;
}
#stage-status button {
  pointer-events: auto;
}
.ready #stage-status {
  opacity: 0;
  visibility: hidden;
}
.hint {
  font-size: 11px;
  line-height: 1.9;
  color: var(--muted);
  margin: 16px 0 24px;
  letter-spacing: .04em;
}
.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 46px;
  max-width: 100%;
  padding: 12px 19px;
  border: 1px solid #acbec7;
  border-radius: 2px;
  background: #c9d7dc;
  color: #111d23;
  font: inherit;
  font-size: 13px;
  line-height: 1.6;
  letter-spacing: .08em;
  text-decoration: none;
  cursor: pointer;
  transition:
    background .2s,
    color .2s,
    border-color .2s;
  -webkit-tap-highlight-color: transparent;
}
.btn.ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--silver);
}
.btn:hover {
  background: #e2e9ec;
}
.btn.ghost:hover {
  background: rgba(183, 206, 216, .08);
  border-color: #8ca2ad;
}
.btn:disabled {
  cursor: wait;
  opacity: .55;
}
.btn[hidden] {
  display: none;
}
.btn[aria-pressed=true] {
  border-color: #abc8d5;
  color: #d9edf5;
}
button:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 2px solid #c7e2ed;
  outline-offset: 5px;
}
.listen {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.listen span {
  font-size: 10px;
  color: var(--muted);
  letter-spacing: .12em;
}
.takeaway {
  border-top: 1px solid var(--line);
  margin-top: 40px;
  padding-top: 30px;
}
h2 {
  font-family:
    "Songti TC",
    "PMingLiU",
    serif;
  font-size: 19px;
  font-weight: 400;
  letter-spacing: .16em;
  margin: 0 0 22px;
}
.row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}
.row > .btn {
  flex: 1;
}
details {
  margin-top: 10px;
}
summary {
  cursor: pointer;
  font-size: 12px;
  color: var(--muted);
  min-height: 44px;
  display: list-item;
  list-style-position: inside;
  padding: 13px 0;
}
.secondary {
  padding: 4px 0 12px;
}
.cta {
  margin-top: 32px;
  padding: 30px 0;
  border-top: 1px solid var(--line);
}
.cta p {
  font-size: 13px;
  line-height: 1.9;
  color: var(--muted);
  margin: 0 0 20px;
  letter-spacing: .04em;
}
.cta a {
  background: transparent;
  color: var(--silver);
  border-color: #7f98a3;
  padding-left: 32px;
  padding-right: 32px;
}
.cta a:hover {
  color: var(--ink);
}
.foot {
  font-size: 10px;
  line-height: 1.9;
  letter-spacing: .07em;
  color: #879ba5;
  margin-top: 12px;
}
.missing {
  padding: 100px 0;
  line-height: 2.2;
  color: var(--muted);
}
#notice {
  position: fixed;
  bottom: max(24px, env(safe-area-inset-bottom));
  left: 50%;
  transform: translate(-50%, 8px);
  width: max-content;
  max-width: calc(100% - 40px);
  padding: 14px 20px;
  background: #16252e;
  border: 1px solid var(--line);
  font-size: 13px;
  color: var(--silver);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s, transform .2s;
  z-index: 80;
}
#notice.visible {
  opacity: 1;
  transform: translate(-50%, 0);
}
@media (min-width: 900px) {
  #brand-mark {
    margin: 32px 0 0 40px;
    width: 150px;
  }
  main {
    padding-top: 12px;
  }
  h1 {
    font-size: 40px;
    margin-top: 18px;
  }
  h1 br {
    display: none;
  }
  #stage-wrap {
    max-width: 560px;
    margin: auto;
  }
  .takeaway {
    margin-top: 44px;
  }
}
@media (max-width: 374px) {
  main {
    padding-left: 20px;
    padding-right: 20px;
  }
  h1 {
    font-size: 30px;
  }
  .btn {
    padding: 11px 12px;
    font-size: 12px;
  }
  .hint {
    font-size: 10px;
  }
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
    scroll-behavior: auto !important;
  }
}