@charset "UTF-8";

.folio-intro {
  position: fixed;
  z-index: 100;
  inset: 0;
  display: none;
  grid-template-rows: 72px minmax(0, 1fr) 72px;
  overflow: hidden;
  background: var(--folio-paper);
  color: var(--folio-ink);
  isolation: isolate;
}

html[data-folio-intro="pending"],
html[data-folio-intro="active"] {
  overflow: hidden;
}

html[data-folio-intro="pending"] .folio-intro,
html[data-folio-intro="active"] .folio-intro {
  display: grid;
}

.folio-intro::before {
  position: absolute;
  z-index: -1;
  inset: 0;
  background:
    linear-gradient(rgba(24, 27, 26, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(24, 27, 26, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  content: "";
  mask-image: linear-gradient(to bottom, transparent, #000 24%, #000 76%, transparent);
}

.folio-intro.is-leaving {
  animation: intro-leave 560ms cubic-bezier(0.4, 0, 0.2, 1) forwards;
  pointer-events: none;
}

.intro-topline,
.intro-footer {
  width: min(1440px, calc(100% - 48px));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin: 0 auto;
}

.intro-topline {
  border-bottom: 1px solid var(--folio-line);
}

.intro-mark {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.intro-mark span {
  font-family: "Songti SC", "STSong", serif;
  font-size: 23px;
  font-weight: 600;
}

.intro-mark b {
  color: var(--folio-accent);
  font-size: 11px;
  letter-spacing: 0;
}

.intro-skip,
.intro-enter {
  min-height: 40px;
  border: 0;
  background: transparent;
  color: var(--folio-muted);
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}

.intro-skip:hover,
.intro-enter:hover {
  color: var(--folio-ink);
}

.folio-intro:focus,
.folio-intro:focus-visible {
  outline: none;
}

.intro-skip:focus:not(:focus-visible),
.intro-enter:focus:not(:focus-visible) {
  outline: none;
}

.intro-skip:focus-visible,
.intro-enter:focus-visible {
  outline: 2px solid var(--folio-teal);
  outline-offset: 3px;
}

.intro-stage {
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px 24px 18px;
}

.intro-heading {
  position: relative;
  z-index: 2;
  margin: 0 0 clamp(22px, 4vh, 44px);
  text-align: center;
}

.intro-heading p {
  margin: 0 0 9px;
  color: var(--folio-faint);
  font-size: 10px;
  font-weight: 700;
}

.intro-heading h1 {
  margin: 0;
  font-family: "Songti SC", "STSong", serif;
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 500;
  line-height: 1.2;
}

.intro-puzzle-wrap {
  position: relative;
  flex: 0 0 auto;
}

.intro-puzzle {
  position: relative;
  width: 960px;
  height: 540px;
  transform-origin: top left;
}

.intro-slots {
  position: absolute;
  inset: 0;
  display: block;
  overflow: visible;
  pointer-events: none;
}

.intro-piece {
  position: absolute;
  width: 320px;
  height: 270px;
  will-change: transform;
}

.intro-piece > svg {
  position: absolute;
  top: -70px;
  left: -70px;
  width: 460px;
  height: 410px;
  display: block;
  overflow: visible;
  pointer-events: none;
  will-change: filter;
}

.intro-piece-side {
  will-change: opacity, transform;
}

.intro-piece-label {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-rows: auto 1fr auto;
  padding: 25px 31px 27px;
  color: #fff;
  opacity: 0;
  text-shadow: 0 1px 12px rgba(0, 0, 0, 0.48);
  will-change: opacity, transform;
}

.intro-piece-spark {
  color: rgba(255, 255, 255, 0.66);
  font: 600 38px/0.72 ui-serif, "Songti SC", serif;
}

.intro-piece-label > p {
  max-width: 238px;
  align-self: center;
  margin: 20px 0 10px;
  font-size: 14px;
  line-height: 1.65;
  text-wrap: pretty;
}

.intro-piece--right .intro-piece-label > p {
  max-width: 210px;
  margin-left: 44px;
}

.intro-piece-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.intro-piece-icon {
  width: 46px;
  height: 46px;
  flex: 0 0 46px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.2);
  text-shadow: none;
}

.intro-piece-icon-svg {
  width: 24px;
  height: 24px;
  display: block;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.intro-piece-meta > span:last-child {
  min-width: 0;
  display: grid;
  gap: 3px;
}

.intro-piece-meta strong {
  font-family: "Songti SC", "STSong", serif;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.2;
}

.intro-piece-meta small {
  overflow: hidden;
  color: rgba(255, 255, 255, 0.7);
  font-size: 10px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.intro-footer {
  border-top: 1px solid var(--folio-line);
}

.intro-footer p {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  color: var(--folio-faint);
  font: 600 10px/1 ui-monospace, "SFMono-Regular", Menlo, monospace;
}

.intro-footer p i {
  width: 54px;
  height: 1px;
  overflow: hidden;
  background: var(--folio-line);
}

.intro-footer p i::after {
  width: var(--intro-progress, 16.66%);
  height: 100%;
  display: block;
  background: var(--folio-accent);
  content: "";
  transition: width 450ms ease;
}

.intro-enter {
  display: flex;
  align-items: center;
  gap: 12px;
}

.intro-enter span {
  font-size: 18px;
}

.replay-intro {
  width: 38px;
  justify-content: center;
  padding: 0 !important;
  font-size: 18px !important;
}

@keyframes intro-leave {
  0% { opacity: 1; transform: scale(1); }
  100% { opacity: 0; transform: scale(1.012); }
}

@media (max-height: 780px) and (min-width: 701px) {
  .intro-heading { margin-bottom: 20px; }
  .intro-heading h1 { font-size: 30px; }
}

@media (max-width: 700px) {
  .folio-intro { grid-template-rows: 64px minmax(0, 1fr) 64px; }
  .folio-intro::before { background-size: 32px 32px; }
  .intro-topline, .intro-footer { width: calc(100% - 32px); }
  .intro-stage { justify-content: center; padding: 18px 16px 12px; }
  .intro-heading { width: 100%; margin-bottom: clamp(26px, 6vh, 52px); }
  .intro-heading p { font-size: 9px; }
  .intro-heading h1 { font-size: clamp(26px, 8vw, 34px); }
  .intro-piece-label { padding: 26px 30px; }
  .intro-piece-label > p { display: none; }
  .intro-piece-spark { font-size: 48px; }
  .intro-piece-meta { align-self: end; }
  .intro-piece-icon { width: 52px; height: 52px; flex-basis: 52px; }
  .intro-piece-icon-svg { width: 29px; height: 29px; }
  .intro-piece-meta strong { font-size: 32px; }
  .intro-piece-meta small { display: none; }
  .intro-footer p i { width: 42px; }
}

@media (prefers-reduced-motion: reduce) {
  .folio-intro.is-leaving { animation-duration: 1ms; }
  .intro-footer p i::after { transition: none; }
}