/* ==========================================================
   06-about.css — ABOUTセクション
   SP基準(390px)をベースに、768px以上でPCデザイン(1440px)
   ========================================================== */

.about {
  background-color: var(--color-white);
  padding: 64px 22px;
}

.about__inner {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
}

.about__main {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

/* --- 見出しブロック --- */
.about__heading {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.about__eyebrow {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 14px;
  line-height: 20.3px;
  letter-spacing: 4px;
  color: #e0a92e;
}

.about__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 26px;
  line-height: 37.6px;
  letter-spacing: 0;
  color: var(--color-text);
}

/* --- 本文 --- */
.about__text {
  font-family: var(--font-base);
  font-weight: 400;
  font-size: 14px;
  line-height: 28px;
  letter-spacing: 0;
  color: var(--color-text);
}

.about__em {
  font-weight: 700;
  color: var(--color-gold);
}

/* --- ステップリスト --- */
.about__steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding-top: 6px;
}

/* PCと同じ「上下の罫線のみ」のスタイルに統一 */
.about__step {
  display: flex;
  gap: 16px;
  padding: 18px 0;
  border-top: 1px solid #26262a;
  border-bottom: 1px solid #26262a;
}

/* 隣接するステップ間は1本の線に重ねる */
.about__step + .about__step {
  margin-top: -1px;
}

.about__step-num {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 20px;
  line-height: 26px;
  color: var(--color-gold);
}

.about__step-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.about__step-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 18px;
  line-height: 26.1px;
  letter-spacing: 0;
  color: var(--color-gold);
  padding: 1px 0 3px;
}

.about__step-text {
  font-family: var(--font-base);
  font-weight: 400;
  font-size: 13px;
  line-height: 23px;
  letter-spacing: 0;
  color: var(--color-text);
}

/* --- 写真(PCのみ表示) --- */
.about__photo-frame {
  max-width: 470px;
  overflow: hidden;
}

.about__photo {
  width: 100%;
  object-fit: cover;
  transition: transform 1.6s cubic-bezier(0.22, 1, 0.36, 1);
}

/* スクロールインでズームがゆっくり静止する演出(JS無効時は等倍のまま) */
.about__visual.js-reveal:not(.is-visible) .about__photo {
  transform: scale(1.08);
}

@media (prefers-reduced-motion: reduce) {
  .about__photo,
  .about__visual.js-reveal:not(.is-visible) .about__photo {
    transition: none;
    transform: none;
  }
}

/* ==========================================================
   PC (768px〜)
   ========================================================== */
@media (min-width: 768px) {
  .about {
    padding: 120px 40px;
  }

  .about__inner {
    flex-direction: row;
    align-items: flex-start;
    gap: clamp(36px, 5vw, 70px);
  }

  .about__main {
    /* テキスト側が残り幅を使う */
    flex: 1 1 0;
    min-width: 0;
    gap: 34px;
  }

  .about__heading {
    gap: 0;
  }

  .about__eyebrow {
    font-weight: 800;
    font-size: 20px;
    line-height: 33.3px;
    letter-spacing: 0;
    color: var(--color-gold);
  }

  .about__title {
    width: fit-content;
    font-size: clamp(34px, 4.6vw, 46px);
    line-height: 1.45;
    color: #000000;
    background-image: linear-gradient(
      to bottom,
      rgba(201, 162, 75, 0) 78%,
      rgba(201, 162, 75, 0.55) 78%
    );
  }

  .about__text {
    font-size: 17px;
    line-height: 33.3px;
    color: #000000;
  }

  .about__steps {
    gap: 0;
    padding-top: 10px;
  }

  .about__step {
    align-items: flex-start;
    gap: 22px;
    padding: 27px 0 26px;
  }

  .about__step-num {
    flex: 0 0 64px;
    text-align: center;
    font-weight: 600;
    font-size: 30px;
    line-height: 43.4px;
  }

  .about__step-body {
    gap: 8px;
  }

  .about__step-title {
    font-weight: 800;
    font-size: 22px;
    line-height: 31.9px;
    padding: 0;
  }

  .about__step-text {
    font-size: 15px;
    line-height: 26px;
    color: #000000;
  }

  .about__visual {
    /* 画像側は470pxを上限に、狭い画面では40%まで縮む */
    flex: 0 1 min(470px, 40%);
    min-width: 0;
    padding-top: 110px;
  }
}