/* ============================================================
   商品個別ページ（アンプル等）共通スタイル
   ※ hyaltive.html のインラインstyleと同一デザイン。複数ページで共有
   ============================================================ */
.product-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 600px;
  margin-top: 68px;
}
.product-hero__image {
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 40px;
}
.product-hero__content {
  padding: 80px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.product-hero__badge {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  padding: 8px 16px;
  border: 1px solid var(--color-accent);
  margin-bottom: 24px;
  width: fit-content;
}
.product-hero__name {
  font-family: var(--font-en);
  font-size: 48px;
  font-weight: 300;
  letter-spacing: 0.12em;
  margin-bottom: 4px;
}
.product-hero__name-ja { font-size: 14px; color: var(--color-grey); margin-bottom: 28px; }
.product-hero__catch {
  font-family: var(--font-jp-display);
  font-size: 24px;
  font-weight: 400;
  line-height: 1.7;
  letter-spacing: 0.06em;
  margin-bottom: 20px;
}
.product-hero__desc { font-size: 14px; color: var(--color-grey); line-height: 2; font-weight: 300; margin-bottom: 36px; }
.product-hero__buttons { display: flex; gap: 12px; }

.concerns { padding: 100px 0; background: var(--color-bg-alt); text-align: center; }
.concerns__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 48px; }
.concern-item { padding: 32px 20px; background: var(--color-bg); border-radius: 4px; text-align: center; }
.concern-item__icon { font-size: 32px; margin-bottom: 16px; }
.concern-item__text { font-size: 14px; color: var(--color-grey); line-height: 1.7; }

.features { padding: var(--section-padding) 0; }
.features__header { text-align: center; margin-bottom: 60px; }
.features__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.feature-card { padding: 48px 32px; border: 1px solid var(--color-border); border-radius: 4px; text-align: center; transition: border-color 0.3s; }
.feature-card:hover { border-color: var(--color-accent); }
.feature-card__number { font-family: var(--font-en); font-size: 48px; font-weight: 300; color: var(--color-border); margin-bottom: 24px; line-height: 1; }
.feature-card__title { font-family: var(--font-jp-display); font-size: 18px; font-weight: 500; letter-spacing: 0.06em; margin-bottom: 16px; }
.feature-card__text { font-size: 14px; color: var(--color-grey); line-height: 2; font-weight: 300; }

.ingredients { padding: var(--section-padding) 0; background: var(--color-bg-alt); }
.ingredients__header { text-align: center; margin-bottom: 60px; }
.ingredients__list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.ingredient-item { display: flex; align-items: flex-start; gap: 24px; padding: 28px; background: var(--color-bg); border-radius: 4px; }
.ingredient-item__icon { width: 48px; height: 48px; background: var(--color-bg-warm); border-radius: 50%; flex-shrink: 0; }
.ingredient-item__title { font-family: var(--font-jp-display); font-size: 15px; font-weight: 500; margin-bottom: 8px; }
.ingredient-item__text { font-size: 13px; color: var(--color-grey); line-height: 1.8; font-weight: 300; }

.howto { padding: var(--section-padding) 0; }
.howto__header { text-align: center; margin-bottom: 60px; }
.howto__steps { max-width: 800px; margin: 0 auto; }
.howto-step { display: grid; grid-template-columns: 120px 1fr; gap: 24px; padding: 32px 0; border-bottom: 1px solid var(--color-border); }
.howto-step:last-child { border-bottom: none; }
.howto-step__number { font-family: var(--font-en); font-size: 11px; font-weight: 400; letter-spacing: 0.15em; text-transform: uppercase; color: var(--color-accent); }
.howto-step__title { font-family: var(--font-jp-display); font-size: 16px; font-weight: 500; margin-bottom: 8px; }
.howto-step__text { font-size: 14px; color: var(--color-grey); line-height: 1.9; font-weight: 300; }

.faq { padding: var(--section-padding) 0; background: var(--color-bg-alt); }
.faq__header { text-align: center; margin-bottom: 60px; }
.faq__list { max-width: 800px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--color-border); }
.faq-item__question { display: flex; justify-content: space-between; align-items: center; padding: 28px 0; cursor: pointer; gap: 16px; }
.faq-item__question h4 { font-family: var(--font-jp-display); font-size: 15px; font-weight: 500; line-height: 1.6; }
.faq-item__icon { font-family: var(--font-en); font-size: 24px; font-weight: 300; color: var(--color-light-grey); flex-shrink: 0; transition: transform 0.3s; }
.faq-item.is-active .faq-item__icon { transform: rotate(45deg); }
.faq-item__answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-item__answer-inner { padding: 0 0 28px; font-size: 14px; color: var(--color-grey); line-height: 2; font-weight: 300; }

.related { padding: var(--section-padding) 0; }
.related__header { text-align: center; margin-bottom: 60px; }
.related__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.related-card { background: var(--color-bg-alt); padding: 32px; text-align: center; transition: all 0.3s; }
.related-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,0.06); }
.related-card__image { height: 140px; background: var(--color-bg-warm); margin-bottom: 20px; border-radius: 4px; overflow: hidden; }
.related-card__image img { width: 100%; height: 100%; object-fit: cover; }
.related-card__name { font-family: var(--font-en); font-size: 14px; font-weight: 500; letter-spacing: 0.1em; margin-bottom: 8px; }
.related-card__desc { font-size: 13px; color: var(--color-grey); }

.legal-note-detail { font-size: 11px; color: var(--color-light-grey); line-height: 1.8; }

/* ===== 商品ヒーロー画像スライダー ===== */
.hero-slider { position: relative; width: 100%; max-width: 380px; margin: 0 auto; }
.hero-slider__viewport { overflow: hidden; width: 100%; }
.hero-slider__track {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.hero-slider__slide {
  flex: 0 0 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 380px;
}
.hero-slider__slide img { max-width: 100%; max-height: 100%; object-fit: contain; }
.hero-slider__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-family: var(--font-en);
  font-size: 20px;
  line-height: 1;
  color: var(--color-dark);
  transition: all 0.3s;
  z-index: 2;
  padding: 0;
}
.hero-slider__arrow:hover { background: #fff; border-color: var(--color-accent); color: var(--color-accent); }
.hero-slider__arrow--prev { left: -6px; }
.hero-slider__arrow--next { right: -6px; }
.hero-slider__dots { display: flex; justify-content: center; gap: 8px; margin-top: 24px; }
.hero-slider__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-border);
  border: none;
  padding: 0;
  cursor: pointer;
  transition: all 0.3s;
}
.hero-slider__dot.is-active { background: var(--color-accent); transform: scale(1.35); }
@media (max-width: 768px) {
  .hero-slider { max-width: 100%; }
  .hero-slider__slide { height: 300px; }
  /* スマホはスワイプ＋ドットで操作。矢印は隠して見やすく */
  .hero-slider__arrow { display: none; }
}
/* 印刷・PDFでは操作UIを隠し1枚目のみ表示 */
@media print {
  .hero-slider__arrow, .hero-slider__dots { display: none !important; }
  .hero-slider__track { transform: none !important; }
  .hero-slider__slide:not(:first-child) { display: none !important; }
}

@media (max-width: 1024px) {
  .product-hero { grid-template-columns: 1fr; }
  .features__grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .product-hero { margin-top: 52px; }
  .product-hero__image { padding: 40px 20px; }
  .product-hero__content { padding: 40px 20px; }
  .product-hero__name { font-size: 32px; }
  .product-hero__catch { font-size: 20px; }
  .product-hero__buttons { flex-direction: column; }
  .product-hero__buttons .btn-primary, .product-hero__buttons .btn-outline { width: 100%; text-align: center; }
  .concerns { padding: 60px 0; }
  .concerns__grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .concern-item { padding: 20px 12px; }
  .concern-item__icon { font-size: 24px; margin-bottom: 8px; }
  .concern-item__text { font-size: 12px; }
  .features__grid { gap: 16px; }
  .feature-card { padding: 32px 20px; }
  .howto-step { grid-template-columns: 1fr; gap: 8px; }
  .related__grid { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .related-card { padding: 12px 8px; min-width: 0; }
  .related-card__image { height: 90px; }
  .related-card__name { font-size: 11px; letter-spacing: 0.04em; overflow-wrap: anywhere; }
  .related-card__desc { font-size: 10px; }
}