/* 場面1「説明動画が続かない、本当の理由」
   冒頭3秒で、文字がくっきり動くこと（＝この作り方の強み）を見せる。
   動きの層: 背景の光 → 題名 → 「やる気の問題？」に線を引く → 4つの理由 */

.scene-open {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr);
}

.scene-open > * {
  grid-area: 1 / 1;
}

.scene-open .glow {
  display: grid;
  overflow: hidden;
}

.scene-open .orb {
  grid-area: 1 / 1;
  width: 560px;
  aspect-ratio: 1;
  border-radius: 50%;
}

.scene-open .orb-warm {
  margin: -220px -140px 0 0;
  justify-self: end;
  align-self: start;
  background: radial-gradient(circle, rgba(224, 80, 58, 0.2), rgba(224, 80, 58, 0) 68%);
}

.scene-open .orb-cool {
  margin: 0 0 -300px -180px;
  width: 640px;
  justify-self: start;
  align-self: end;
  background: radial-gradient(circle, rgba(16, 128, 107, 0.16), rgba(16, 128, 107, 0) 68%);
}

.scene-open .body {
  padding: 64px 96px 72px;
  display: grid;
  align-content: center;
  justify-items: start;
  gap: 22px;
}

.scene-open .kicker {
  color: var(--ink-soft);
  font-family: var(--font-en);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.24em;
}

.scene-open .title {
  font-size: 88px;
  line-height: 1.16;
}

.scene-open .line {
  display: block;
}

.scene-open .myth {
  display: inline-grid;
  color: var(--ink-soft);
  font-size: 36px;
  font-weight: 700;
}

.scene-open .myth > * {
  grid-area: 1 / 1;
}

.scene-open .myth-strike {
  margin: 0 -8px;
  height: 6px;
  align-self: center;
  background: var(--alert);
  border-radius: 3px;
  transform-origin: left;
  scale: 0 1;
}

.scene-open .answer {
  font-size: 40px;
  font-weight: 900;
}

.scene-open .reasons {
  display: flex;
  gap: 14px;
}

.scene-open .reasons li {
  padding: 10px 24px;
  background: #fff;
  font-size: 26px;
  font-weight: 900;
  border: 3px solid var(--ink);
  border-radius: 999px;
}

/* ---- 動き（この場面が再生中のときだけ） ---- */

.scene-open.is-active .orb-warm {
  animation: fade 1.2s ease both, drift 9s ease-in-out infinite;
}

.scene-open.is-active .orb-cool {
  animation: fade 1.2s ease 0.2s both, drift 11s ease-in-out infinite reverse;
}

.scene-open.is-active .kicker {
  animation: rise 0.6s var(--ease-out) 0.05s both;
}

.scene-open.is-active .line:nth-child(1) {
  animation: rise 0.7s var(--ease-out) 0.2s both;
}

.scene-open.is-active .line:nth-child(2) {
  animation: rise 0.7s var(--ease-out) 0.45s both;
}

.scene-open.is-active .myth-text {
  animation:
    fade 0.5s ease 1.2s both,
    dim-myth 0.5s ease calc(var(--cue-0) + 3s) forwards;
}

.scene-open.is-active .myth-strike {
  animation: draw-x 0.45s var(--ease-out) calc(var(--cue-0) + 2.5s) both;
}

.scene-open.is-active .answer {
  animation: rise 0.6s var(--ease-out) calc(var(--cue-1) + 0.1s) both;
}

.scene-open.is-active .reasons li:nth-child(1) { animation: pop 0.5s var(--ease-out) calc(var(--cue-1) + 1s) both; }
.scene-open.is-active .reasons li:nth-child(2) { animation: pop 0.5s var(--ease-out) calc(var(--cue-1) + 1.25s) both; }
.scene-open.is-active .reasons li:nth-child(3) { animation: pop 0.5s var(--ease-out) calc(var(--cue-1) + 1.5s) both; }
.scene-open.is-active .reasons li:nth-child(4) { animation: pop 0.5s var(--ease-out) calc(var(--cue-1) + 1.75s) both; }

@keyframes dim-myth {
  from { opacity: 1; }
  to { opacity: 0.45; }
}