:root {
  --text: #fff4d8;
  --muted: rgba(255, 244, 216, 0.72);
  --panel: rgba(4, 8, 7, 0.52);
  --line: rgba(255, 244, 216, 0.2);
  color: var(--text);
  background: #040706;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", "Noto Serif JP", serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

#field {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100dvh;
  display: block;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

body::before {
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.68), rgba(0, 0, 0, 0.06) 52%, rgba(0, 0, 0, 0.56)),
    radial-gradient(circle at 54% 44%, rgba(255, 209, 125, 0.15), transparent 28%);
}

body::after {
  opacity: 0.28;
  background-image:
    linear-gradient(rgba(255, 244, 216, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 244, 216, 0.04) 1px, transparent 1px);
  background-size: 58px 58px;
}

.deck {
  position: relative;
  z-index: 2;
  width: 100vw;
  height: 100dvh;
  display: flex;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  scrollbar-width: none;
}

.deck::-webkit-scrollbar {
  display: none;
}

.page {
  flex: 0 0 100vw;
  min-width: 100vw;
  height: 100dvh;
  scroll-snap-align: start;
  display: grid;
  align-items: center;
  padding: clamp(72px, 10vh, 110px) clamp(18px, 7vw, 96px);
}

.paper {
  width: min(760px, 72vw);
  max-height: min(72dvh, 680px);
  overflow-y: auto;
  padding: clamp(20px, 3vw, 34px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(130deg, rgba(255, 244, 216, 0.13), rgba(5, 12, 9, 0.56));
  box-shadow: 0 34px 110px rgba(0, 0, 0, 0.48);
  backdrop-filter: blur(22px);
}

.page-one .paper {
  margin-left: 0;
}

.page-two .paper {
  margin-inline: auto;
}

.page-three .paper {
  margin-left: auto;
}

.paper p {
  margin: 0 0 1em;
  color: var(--muted);
  font-size: clamp(15px, 1.35vw, 19px);
  line-height: 1.86;
  letter-spacing: 0;
}

.paper p:first-child {
  color: var(--text);
  font-size: clamp(32px, 5.5vw, 76px);
  line-height: 1.05;
  margin-bottom: 0.42em;
  text-shadow: 0 18px 58px rgba(0, 0, 0, 0.62);
}

.paper::-webkit-scrollbar {
  width: 4px;
}

.paper::-webkit-scrollbar-thumb {
  background: rgba(255, 244, 216, 0.4);
  border-radius: 99px;
}

.pager {
  position: fixed;
  left: clamp(18px, 5vw, 72px);
  right: clamp(18px, 5vw, 72px);
  bottom: max(18px, env(safe-area-inset-bottom));
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font: 700 12px/1 Inter, "Noto Sans JP", system-ui, sans-serif;
}

.line {
  position: relative;
  height: 2px;
  flex: 1;
  background: rgba(255, 244, 216, 0.17);
}

.line i {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0%;
  background: var(--text);
}

@media (max-width: 760px) {
  .page {
    align-items: end;
    padding: calc(46px + env(safe-area-inset-top)) 16px calc(58px + env(safe-area-inset-bottom));
  }

  .paper,
  .page-two .paper,
  .page-three .paper {
    width: 100%;
    max-height: 70dvh;
    margin: 0;
    padding: 18px;
  }

  .paper p {
    font-size: 13px;
    line-height: 1.68;
  }

  .paper p:first-child {
    font-size: clamp(28px, 10vw, 44px);
  }
}

@media (max-width: 370px) {
  .page {
    padding-left: 13px;
    padding-right: 13px;
  }

  .paper {
    padding: 15px;
  }

  .paper p {
    font-size: 12px;
    line-height: 1.58;
  }
}