/* ベース */
*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Noto Sans JP", "Hiragino Sans", "Meiryo", sans-serif;
  background: #fff;
  color: #111;
}

a {
  color: inherit;
  text-decoration: none;
}

#wrapper {
  max-width: 750px;
  margin: 0 auto;
  background: #fff;
}

img {
  display: block;
  width: 100%;
  height: auto;
}

.img-block {
  margin: 0;
}

.img-overlay {
  position: relative;
  margin: 0;
}

.overlay-img {
  position: absolute;
  z-index: 3;
  pointer-events: none;
}

/* 007-80.jpg の「理解度そのままに」付近に x3up を重ねる（必要ならCSS変数で微調整） */
.overlay-x3up {
  --x3up-top: 30%;
  --x3up-left: 50%;
  --x3up-width: 60%;
}

.overlay-x3up .x3up-overlay {
  top: var(--x3up-top);
  left: var(--x3up-left);
  transform: translateX(-50%) translateY(12px);
  width: var(--x3up-width);
  max-width: 520px;
  opacity: 0;
  transition: opacity 360ms ease, transform 360ms ease;
  will-change: opacity, transform;
}

.overlay-x3up.is-visible .x3up-overlay {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .overlay-x3up .x3up-overlay {
    transition: none;
    transform: translateX(-50%);
  }
}

/* 011-80.jpg の白い枠内に logo を重ねる（必要ならCSS変数で微調整） */
.overlay-logo {
  --logo-top: 18%;
  --logo-left: 50%;
  --logo-width: 78%;
}

.overlay-logo .logo-overlay {
  top: var(--logo-top);
  left: var(--logo-left);
  width: var(--logo-width);
  max-width: 560px;
  transform: translateX(-50%) translateY(12px);
  opacity: 0;
  transition: opacity 360ms ease, transform 360ms ease;
  will-change: opacity, transform;
}

.overlay-logo.is-visible .logo-overlay {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .overlay-logo .logo-overlay {
    transition: none;
    transform: translateX(-50%);
  }
}

/* 013-80.jpg の上に eye01 を重ねる（画面中央でフェードアウト：必要ならCSS変数で微調整） */
.overlay-eye {
  --eye-top: 3%;
  --eye-left: 50%;
  --eye-width: 60%;
}

.overlay-eye .eye-overlay {
  top: var(--eye-top);
  left: var(--eye-left);
  width: var(--eye-width);
  max-width: 680px;
  transform: translateX(-50%) translateY(12px);
  opacity: 0;
  transition: opacity 360ms ease, transform 360ms ease;
  will-change: opacity, transform;
}

.overlay-eye.is-visible .eye-overlay {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .overlay-eye .eye-overlay {
    transition: none;
  }
}

/* 015-80.jpg の上部55%に brain01 を重ねる（画面中央でフェードイン） */
.overlay-brain01 {
  --brain01-top: 54%;
  --brain01-left: 50%;
  --brain01-width: 45%;
}

.overlay-brain01 .brain01-overlay {
  top: var(--brain01-top);
  left: var(--brain01-left);
  width: var(--brain01-width);
  max-width: 680px;
  transform: translateX(-50%) translateY(12px);
  opacity: 0;
  transition: opacity 360ms ease, transform 360ms ease;
  will-change: opacity, transform;
}

.overlay-brain01.is-visible .brain01-overlay {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .overlay-brain01 .brain01-overlay {
    transition: none;
    transform: translateX(-50%);
  }
}

/* 016-80.jpg の上部5%に brain02 を重ねる（画面中央でフェードイン） */
.overlay-brain02 {
  --brain02-top: 2%;
  --brain02-left: 50%;
  --brain02-width: 45%;
}

.overlay-brain02 .brain02-overlay {
  top: var(--brain02-top);
  left: var(--brain02-left);
  width: var(--brain02-width);
  max-width: 680px;
  transform: translateX(-50%) translateY(12px);
  opacity: 0;
  transition: opacity 360ms ease, transform 360ms ease;
  will-change: opacity, transform;
}

.overlay-brain02.is-visible .brain02-overlay {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .overlay-brain02 .brain02-overlay {
    transition: none;
    transform: translateX(-50%);
  }
}

/* 019-80.jpg の上部10%に reading01 を重ねる（画面中央でフェードイン） */
.overlay-reading01 {
  --reading01-top: 0.5%;
  --reading01-left: 50%;
  --reading01-width: 45%;
}

.overlay-reading01 .reading01-overlay {
  top: var(--reading01-top);
  left: var(--reading01-left);
  width: var(--reading01-width);
  max-width: 680px;
  transform: translateX(-50%) translateY(12px);
  opacity: 0;
  transition: opacity 360ms ease, transform 360ms ease;
  will-change: opacity, transform;
}

.overlay-reading01.is-visible .reading01-overlay {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .overlay-reading01 .reading01-overlay {
    transition: none;
    transform: translateX(-50%);
  }
}

/* voice01〜04（受講者の声）：左右寄せ＋画面中央でフェードイン */
.overlay-voice {
  --voice-top: 38%;
  --voice-width: 34%;
  --voice-offset: 13%;
}

/* 個別に高さ（top）を変えたい場合はここを調整 */
.overlay-voice01 {
  --voice-top: 30%;
}

.overlay-voice02 {
  --voice-top: 13%;
}

.overlay-voice03 {
  --voice-top: 15%;
}

.overlay-voice04 {
  --voice-top: 13%;
}

.overlay-voice .voice-overlay {
  top: var(--voice-top);
  width: var(--voice-width);
  max-width: 280px;
  height: auto;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 360ms ease, transform 360ms ease;
  will-change: opacity, transform;
}

.overlay-voice--left .voice-overlay {
  left: var(--voice-offset);
}

.overlay-voice--right .voice-overlay {
  right: var(--voice-offset);
}

.overlay-voice .voice-overlay.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .overlay-voice .voice-overlay {
    transition: none;
    transform: none;
    opacity: 1;
  }
}

/* 032-80.jpg 上のCTA（常時表示） */
.overlay-cta2 .cta2-overlay {
  position: absolute;
  top: 22%;
  left: 60%;
  transform: translateX(-50%);
  width: 60%;
  max-width: 520px;
  z-index: 3;
  display: block;
}

.overlay-cta2 .cta2-overlay img {
  width: 100%;
  height: auto;
}

/* 033-80.jpg 上のCTA（テキスト＋ボタン、常時表示） */
.overlay-cta33 .cta33-content {
  position: absolute;
  left: 50%;
  bottom: 5%;
  transform: translateX(-50%);
  width: 86%;
  max-width: 680px;
  z-index: 3;
  text-align: center;
}

.overlay-cta33 .cta33-text {
  width: 100%;
  max-width: 520px;
  margin: 0 auto 10px;
}

.overlay-cta33 .cta33-btn {
  display: block;
  width: 100%;
  max-width: 520px;
  margin: 0 auto;
}

.overlay-cta33 .cta33-btn img {
  width: 100%;
  height: auto;
}

/* 022-80.jpg の上に benefit01〜04 を重ねる */
.overlay-benefits .benefit01-overlay,
.overlay-benefits .benefit02-overlay,
.overlay-benefits .benefit03-overlay,
.overlay-benefits .benefit04-overlay {
  height: auto;
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  opacity: 0;
  transition: opacity 360ms ease, transform 360ms ease;
  will-change: opacity, transform;
}

.overlay-benefits .benefit01-overlay.is-visible,
.overlay-benefits .benefit02-overlay.is-visible,
.overlay-benefits .benefit03-overlay.is-visible,
.overlay-benefits .benefit04-overlay.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .overlay-benefits .benefit01-overlay,
  .overlay-benefits .benefit02-overlay,
  .overlay-benefits .benefit03-overlay,
  .overlay-benefits .benefit04-overlay {
    transition: none;
    transform: translateX(-50%);
  }
}

.overlay-benefits .benefit01-overlay {
  top: 3%;
  width: 80%;
  max-width: 620px;
}

.overlay-benefits .benefit02-overlay {
  top: 37%;
  width: 90%;
  max-width: 520px;
}

.overlay-benefits .benefit03-overlay {
  top: 62%;
  width: 80%;
  max-width: 520px;
}

.overlay-benefits .benefit04-overlay {
  top: 87%;
  width: 80%;
  max-width: 520px;
}

/* トレーニング：背景つきアコーディオン */
.training-accordion {
  background-image: url(../img/back2-80.jpg);
  /* coverだと要素高さで拡大率/トリミングが変わるため、幅は合わせて縦方向に延長する */
  background-repeat: repeat-y;
  background-position: center top;
  /* back2-80.jpg(751x1453) を縦に継ぎ足し。高さをpx固定して継ぎ目の白線も出にくくする */
  background-size: 100% 1453px;
  background-color: #fff;
  padding: 20px 0 28px;
}

.training-accordion__toggle {
  display: block;
  width: min(720px, 88%);
  margin: 0 auto;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.training-accordion__toggle:focus-visible {
  outline: 3px solid rgba(11, 53, 100, 0.5);
  outline-offset: 4px;
}

.training-accordion__toggle-img {
  display: block;
  width: 100%;
  height: auto;
}

.training-accordion__toggle-img--open {
  display: none;
}

.training-accordion.is-open .training-accordion__toggle-img--close {
  display: none;
}

.training-accordion.is-open .training-accordion__toggle-img--open {
  display: block;
}

.training-accordion__panel {
  width: min(720px, 88%);
  margin: 0 auto;
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: max-height 320ms ease, opacity 240ms ease;
}

.training-accordion.is-open .training-accordion__panel {
  opacity: 1;
}

@media (prefers-reduced-motion: reduce) {
  .training-accordion__panel {
    transition: none;
  }
}

.img-overlay .cta-overlay {
  position: absolute;
  top: auto;
  left: 50%;
  transform: translateX(-50%);
  bottom: 7%;
  width: 78%;
  max-width: 580px;
  z-index: 2;
  display: block;
}

.cta-overlay img {
  width: 100%;
}

.cta-overlay-inner {
  display: block;
  width: 100%;
  line-height: 0;
}

.shiny-btn {
  cursor: pointer;
  position: relative;
  overflow: hidden;
  text-align: center;
  display: block;
}

.shiny-btn::before {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 10px;
  top: 0;
  left: -100%;
  background-image: linear-gradient(130deg, rgba(255, 255, 255, 0) 25%, rgba(255, 255, 255, 0.5) 50%, rgba(255, 255, 255, 0) 75%);
  animation: shine 1s infinite;
  z-index: 2;
  pointer-events: none;
}

.shiny-btn img {
  position: relative;
  z-index: 1;
}

@keyframes shine {
  100% {
    left: 100%;
  }
}

@keyframes pulse {
  from {
    transform: scale3d(1, 1, 1);
  }
  50% {
    transform: scale3d(1.075, 1.075, 1.075);
  }
  to {
    transform: scale3d(1, 1, 1);
  }
}

.pulse {
  animation: pulse 1.4s ease 0s infinite normal;
  transform-origin: center;
}

/* CTA */
.cta-block {
  padding: 24px 16px 32px;
  background: #f4fbff;
  text-align: center;
}

.cta-inner {
  max-width: 680px;
  margin: 0 auto;
}

.cta-btn {
  display: block;
  margin: 12px auto 0;
  width: 100%;
  max-width: 640px;
}

.cta-btn img {
  width: 100%;
}

/* フッター */
footer {
  padding: 32px 16px 48px;
  background: #0B3564;
  color: #fff;
  text-align: center;
  font-size: 12px;
  letter-spacing: 0.04em;
}

footer ul {
  display: flex;
  justify-content: center;
  gap: 16px;
  padding: 0;
  margin: 0 0 12px;
  list-style: none;
}

footer a {
  color: #fff;
  text-decoration: underline;
}

/* 追従CTA */
.fixed-cta {
  position: fixed;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%) translateY(8px);
  width: 90vw;
  max-width: 750px;
  display: block;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  z-index: 50;
  filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.25));
  transition: opacity 240ms ease, transform 240ms ease, visibility 0s linear 240ms;
}

.fixed-cta.show {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
  transition: opacity 240ms ease, transform 240ms ease, visibility 0s linear 0s;
}

.fixed-cta.is-hidden-by-footer {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateX(-50%) translateY(8px);
  transition: opacity 240ms ease, transform 240ms ease, visibility 0s linear 240ms;
}

.fixed-cta img {
  width: 100%;
  height: auto;
}

@media (min-width: 768px) {
  body {
    background: #e9eff3;
  }

  #wrapper {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  }
}