/* v0.9 live: "無理なく始められる通勤ラン" chapter (03 cover + 06-11 new pages). */

/* ---- 共通 ---- */
.er-label {
  display: block;
  margin-bottom: 1rem;
  font-size: .67rem;
  font-weight: 700;
  letter-spacing: .26em;
  color: rgba(23, 23, 22, .44);
}

.er-label--light { color: rgba(255, 255, 255, .56); }

.er-title {
  margin: 0;
  font-family: "M PLUS 1", var(--font-sans);
  font-size: clamp(2.6rem, 4.2vw, 4rem);
  font-weight: 800;
  letter-spacing: .01em;
  line-height: 1.22;
}

.er-title--xl {
  font-size: clamp(2.9rem, 5.2vw, 5rem);
}

.er-body {
  margin: 1.25rem 0 0;
  font-size: clamp(.9rem, 1.15vw, 1rem);
  line-height: 1.9;
}

.er-page {
  position: relative;
  min-height: calc(100svh - var(--swipe-ui-rail));
  overflow: hidden;
}

@supports (min-height: 100dvh) {
  .er-page { min-height: calc(100dvh - var(--swipe-ui-rail)); }
}

/* ---- 03 章扉（s2-visual を拡張） ---- */
.er-cover { position: relative; }

.er-cover__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 10, 10, .52) 0%, rgba(10, 10, 10, .18) 34%, rgba(10, 10, 10, 0) 60%);
  pointer-events: none;
}

.er-cover__copy {
  position: absolute;
  left: max(3rem, calc((100vw - var(--content-wide)) / 2));
  bottom: clamp(2.5rem, 7vh, 4.5rem);
  color: #fff;
}

.er-cover__copy .er-label { color: rgba(255, 255, 255, .62); }

.er-cover__title {
  margin: 0;
  font-family: "M PLUS 1", var(--font-sans);
  font-size: clamp(2.8rem, 4.8vw, 4.6rem);
  font-weight: 800;
  letter-spacing: .01em;
  line-height: 1.24;
  text-shadow: 0 2px 26px rgba(0, 0, 0, .35);
}

/* ---- クロージング ---- */
.er-closing {
  background: #101010;
  color: #fff;
}

.er-closing__media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
}

.er-closing__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 10, 10, .58) 0%, rgba(10, 10, 10, .2) 36%, rgba(10, 10, 10, 0) 62%);
  pointer-events: none;
}

.er-closing__copy {
  position: absolute;
  z-index: 2;
  left: max(3rem, calc((100vw - var(--content-wide)) / 2));
  bottom: clamp(2.5rem, 7vh, 4.5rem);
  color: #fff;
}

.er-closing__title {
  margin: 0;
  font-family: "M PLUS 1", var(--font-sans);
  font-size: clamp(2.8rem, 4.8vw, 4.6rem);
  font-weight: 800;
  letter-spacing: .01em;
  line-height: 1.24;
  text-shadow: 0 2px 26px rgba(0, 0, 0, .35);
}

/* ---- フルブリード型（06 / 11） ---- */
.er-full__media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.er-walk picture { position: absolute; inset: 0; }

.er-full__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 10, 10, .55) 0%, rgba(10, 10, 10, .16) 38%, rgba(10, 10, 10, 0) 62%);
  pointer-events: none;
}

.er-full__copy {
  position: absolute;
  z-index: 2;
  max-width: 36rem;
}

.er-full__copy--top-left {
  top: clamp(3rem, 9vh, 5.5rem);
  left: max(3rem, calc((100vw - var(--content-wide)) / 2));
}

.er-full__copy--bottom-left {
  left: max(3rem, calc((100vw - var(--content-wide)) / 2));
  bottom: clamp(2.5rem, 7vh, 4.5rem);
  color: #fff;
}

.er-full__copy--dark { color: #171716; }
.er-full__copy--dark .er-body { color: rgba(23, 23, 22, .72); }

/* 06: 画像は右側に人物、左上が明るい空 */
.er-station .er-full__media { object-position: 68% center; }

/* 11: 人物は中央 */
.er-walk .er-full__media { object-position: center 30%; }

/* ---- スプリット型（07 / 09） ---- */
.er-split { background: #fafaf7; color: #171716; }

.er-split__inner {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  align-items: center;
  gap: clamp(2rem, 4vw, 4rem);
  width: min(calc(100% - 3rem), var(--content-wide));
  min-height: inherit;
  margin-inline: auto;
  padding-block: clamp(2rem, 5vh, 3.5rem);
}

.er-split--reverse .er-split__inner {
  grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
}

.er-split--reverse .er-split__copy { order: 2; }
.er-split--reverse .er-split__media { order: 1; }

.er-split__media {
  margin: 0;
}

.er-split__media img {
  display: block;
  width: 100%;
  height: min(68vh, 640px);
  object-fit: cover;
  object-position: center;
}

.er-split__copy .er-body { color: rgba(23, 23, 22, .68); }

/* ---- 08 タイポグラフィ主役（続けるコツは、減らすこと。） ---- */
.er-less {
  display: flex;
  align-items: center;
  background: #f2f2ee;
  color: #171716;
}

.er-less__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  align-items: center;
  gap: clamp(2rem, 4vw, 4rem);
  width: min(calc(100% - 3rem), var(--content-wide));
  margin-inline: auto;
}

.er-less__product {
  display: block;
  width: min(100%, 520px);
  aspect-ratio: 4 / 5;
  height: auto;
  justify-self: center;
  object-fit: cover;
  object-position: center;
}

/* ---- 10 ダーク（走れるところまででいい。） ---- */
.er-dark {
  background: #0f0f0e;
  color: #fff;
}

.er-dark__inner {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  align-items: center;
  gap: clamp(2rem, 4vw, 4rem);
  width: min(calc(100% - 3rem), var(--content-wide));
  min-height: inherit;
  margin-inline: auto;
  padding-block: clamp(2rem, 5vh, 3.5rem);
}

.er-dark__media {
  margin: 0;
}

.er-dark__media img {
  display: block;
  width: 100%;
  height: min(78vh, 700px);
  object-fit: cover;
  object-position: center;
}

/* ---- SP ---- */
@media (max-width: 900px) {
  .er-label { margin-bottom: .75rem; }

  .er-title { font-size: clamp(2.1rem, 9vw, 2.8rem); }
  .er-title--xl { font-size: clamp(2.3rem, 10vw, 3rem); }

  .er-body { font-size: .9rem; }

  .er-cover__copy,
  .er-closing__copy,
  .er-full__copy--top-left,
  .er-full__copy--bottom-left {
    left: clamp(1rem, 4.6vw, 1.25rem);
    right: clamp(1rem, 4.6vw, 1.25rem);
  }

  /* 「無理なく始められる、」が1行に収まるサイズ */
  .er-cover__title { font-size: clamp(1.85rem, 8.2vw, 2.5rem); }

  .er-closing__media { object-position: 40% center; }
  .er-closing__title { font-size: clamp(1.85rem, 8.2vw, 2.5rem); }

  .er-station .er-full__media { object-position: 62% center; }

  /* SPでは上部に白のスクリムを敷いてコピーの可読性を確保 */
  .er-station::after {
    content: "";
    position: absolute;
    z-index: 1;
    inset: 0 0 auto 0;
    height: 44%;
    background: linear-gradient(to bottom, rgba(250, 250, 247, .9) 0%, rgba(250, 250, 247, .55) 55%, rgba(250, 250, 247, 0) 100%);
    pointer-events: none;
  }

  .er-split__inner,
  .er-less__inner,
  .er-dark__inner {
    grid-template-columns: 1fr;
    width: 100%;
    gap: 0;
    padding-block: 0 clamp(2rem, 7vw, 3rem);
  }

  .er-split__copy,
  .er-less__copy,
  .er-dark__copy {
    order: 2;
    padding: 1.4rem clamp(1rem, 4.6vw, 1.25rem) 0;
  }

  .er-split__media,
  .er-dark__media {
    order: 1;
  }

  .er-split__media img {
    height: clamp(320px, 92vw, 420px);
  }

  .er-dark__media img {
    height: clamp(360px, 104vw, 480px);
  }

  .er-less { display: block; }

  .er-less__product {
    order: 2;
    width: min(calc(100% - 2rem), 440px);
    margin: 1.5rem auto 0;
  }

  .er-less__copy {
    order: 1;
    padding-top: clamp(2.5rem, 9vw, 3.5rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .er-page [data-reveal],
  .er-cover__copy[data-reveal],
  .er-closing__copy[data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}