:root {
  /* component sizing */
  --c-btn-height-sm: 32px;
  --c-btn-height-md: 40px;
  --c-btn-height-lg: 56px;

  --c-btn-padding-x-sm: 12px;
  --c-btn-padding-x-md: 18px;
  --c-btn-padding-x-lg: 26px;

  --c-chip-height: 32px;

  --c-pagination-size: 32px;
  --c-pagination-gap: 8px;

  --c-link-underline-offset: 2px;
}

/* =========================
   Icon System
========================= */
.icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  line-height: 1;
}

.icon svg {
  display: block;
  width: 1em;
  height: 1em;
}

/* サイズバリエーション */
.icon--sm {
  font-size: 14px;
}

.icon--md {
  font-size: 16px;
}

.icon--lg {
  font-size: 20px;
}

.icon--xl {
  font-size: 24px;
}

/* =========================
   Button Base
========================= */
.c-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  background: transparent;
  color: inherit;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition:
    color var(--transition-fast),
    background var(--transition-fast),
    border-color var(--transition-fast),
    opacity var(--transition-fast),
    box-shadow var(--transition-fast);
}

.c-btn:hover {
  opacity: 0.86;
}

.c-btn__label {
  display: inline-flex;
  align-items: baseline;
  min-width: 0;
}

.c-btn__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  line-height: 1;
}

/* =========================
   Anker link Button
========================= */
.c-btn--tab {
  justify-content: space-between;
  border: 1px solid var(--color-border);
  background: var(--color-bg-section);
  color: var(--color-text);
  font-family: var(--font-en);
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0.02em;
}

.c-btn--tab:hover {
  background: var(--color-text);
  color: var(--color-text-inverse);
  opacity: 1;
}

.c-btn--tab .c-btn__icon {
  margin-left: 12px;
}

/* M */
.c-btn--tab-m {
  padding: 16px 32px 16px 28px; /* 現状見た目優先 */
  font-size: 16px;
}

/* S */
.c-btn--tab-s {
  padding: 14px 22px 14px 26px;
  font-size: 14px;
}

/* =========================
   Footer Button
========================= */
.c-btn--footer {
  border: 1px solid var(--color-white);
  background: transparent;
  color: var(--color-text-inverse);
  font-family: var(--font-en);
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0;
}

.c-btn--footer .c-btn__icon {
  margin-left: 24px;
}

/* M */
.c-btn--footer-m {
  padding: 16px 20px 16px 24px;
  font-size: 16px;
}

/* S */
.c-btn--footer-s {
  padding: 12px 16px 12px 18px;
  font-size: 14px;
}

/* hover未決なので仮でopacityのみ */
.c-btn--footer:hover {
  opacity: 0.72;
}

/* =========================
   Floating Button
========================= */
.c-btn--floating {
  border: none;
  background: var(--color-overlay-dark);
  color: var(--color-text-inverse);
  font-family: var(--font-en);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
}

.c-btn--floating .c-btn__icon {
  margin-left: 10px;
}

/* M */
.c-btn--floating-m {
  padding: 20px 24px 20px 26px;
  font-size: 20px;
}

/* S */
.c-btn--floating-s {
  padding: 14px 16px 14px 18px;
  font-size: 16px;
}

/* hover : dropshadow 仮反映 */
.c-btn--floating:hover {
  opacity: 1;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.22);
}

/* =========================
   CTA Button Base
========================= */
.c-btn--cta {
  position: relative;
  display: block;
  border: none;
  color: var(--color-text-inverse);
  font-family: var(--font-ja);
  font-weight: 600;
  line-height: 1.8;
  letter-spacing: 0;
  text-decoration: none;
}

.c-btn--cta .c-btn__label {
  display: flex;
  align-items: baseline;
  justify-content: center;
  text-align: center;
}

.c-btn--cta .c-btn__icon {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.c-btn--rakuten {
  background: #b10303;
}

.c-btn--amazon {
  background: #cc6f13;
}

.c-btn--rakuten:hover,
.c-btn--amazon:hover {
  opacity: 0.92;
}

/* =========================
   CTA M
========================= */
.c-btn--cta-m {
  min-width: 347px;
  min-height: 56px;
  padding: 8px 32px;
}

.c-btn--cta-m .c-btn__label {
  gap: 8px;
}

.c-btn--cta-m .c-btn__main {
  font-size: 22px;
}

.c-btn--cta-m .c-btn__sub {
  font-size: 16px;
}

.c-btn--cta-m .c-btn__icon {
  right: 32px; /* 右padding内に配置 */
}

.c-btn--cta-m .c-btn__icon svg {
  width: 24px;
  height: 14px;
}

/* テキスト位置補正：
   中央基準を「ボタン幅 - 右padding - icon幅」に寄せる */
.c-btn--cta-m .c-btn__label {
  padding-right: 56px; /* 24(icon) + 32(right padding) */
}

/* =========================
   CTA S
========================= */
.c-btn--cta-s {
  min-width: 159px;
  min-height: 45px;
  padding: 8px 14px 8px 12px;
}

.c-btn--cta-s .c-btn__label {
  gap: 4px;
}

.c-btn--cta-s .c-btn__main {
  font-size: 16px;
}

.c-btn--cta-s .c-btn__sub {
  font-size: 12px;
}

.c-btn--cta-s .c-btn__icon {
  right: 14px; /* 右padding内に配置 */
}

.c-btn--cta-s .c-btn__icon svg {
  width: 24px;
  height: 14px;
}

.c-btn--cta-s .c-btn__label {
  padding-right: 38px; /* 24(icon) + 14(right padding) */
}

/* =========================
   Responsive
========================= */
@media (max-width: 768px) {
  .c-btn--tab {
    width: 100%;
  }

  .c-btn--cta-m,
  .c-btn--cta-s {
    width: 100%;
    min-width: 0;
  }
}

/* =========================
   Link Base
========================= */
.c-link {
  display: inline-flex;
  align-items: center;
  color: inherit;
  text-decoration: none;
  transition:
    color var(--transition-fast),
    opacity var(--transition-fast);
}

.c-link:hover {
  opacity: 0.72;
}

.c-link__label {
  display: inline-flex;
  align-items: center;
  min-width: 0;
}

.c-link__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  line-height: 1;
}

/* =========================
   Navigation link
========================= */
.c-link--nav-trigger {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-en);
  font-size: 16px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0;
  color: var(--color-text);
}

.c-link--nav-trigger:hover {
  opacity: 0.5;
}

.c-link--nav-trigger .c-link__icon {
  font-size: 16px;
}

/* dropdown内リンク */
.c-link--nav-item {
  display: block;
  padding: 8px 0;
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: 0.04em;
  color: var(--color-text);
}

.c-link--nav-item:hover {
  opacity: 0.5;
}

/* =========================
   Text link
========================= */
.c-link--text {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-ja);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: 0;
  color: var(--color-text);
  text-decoration: none;
}

.c-link--text .c-link__icon {
  font-size: 16px;
}

/* hover未定なので仮でopacity */
.c-link--text:hover {
  opacity: 0.72;
}

/* =========================
   Back link
========================= */
.c-link--back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-en);
  font-size: 16px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0;
  color: var(--color-text);
  text-decoration: none;
}

.c-link--back .c-link__icon {
  font-size: 16px;
}

.c-link--back:hover {
  opacity: 0.72;
}

/* =========================
   External link
========================= */
.c-link--external {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  font-family: var(--font-ja);
  font-weight: 400;
  letter-spacing: 0;
  color: var(--color-text);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
}

.c-link--external .c-link__icon {
  font-size: 1em;
  line-height: 1;
}

/* M */
.c-link--external-m {
  font-size: 15px;
  line-height: 1.2;
}

/* S */
.c-link--external-s {
  font-size: 12px;
  line-height: 1.2;
}

.c-link--external:hover {
  opacity: 0.72;
}

/* =========================
   Label Base
========================= */
.c-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text);
  line-height: 1;
  white-space: nowrap;
}

.c-label__text {
  display: inline-block;
  min-width: 0;
}

/* =========================
   Label : Size
========================= */
.c-label--size {
  font-family: var(--font-en);
  font-weight: 400;
  letter-spacing: 0;
}

/* M */
.c-label--size-m {
  padding: 4px 8px;
  font-size: 14px;
}

/* S */
.c-label--size-s {
  padding: 4px 6px;
  font-size: 11px;
}

/* =========================
   Label : News
========================= */
.c-label--news {
  font-family: var(--font-ja);
  font-weight: 400;
  letter-spacing: 0;
}

/* M */
.c-label--news-m {
  padding: 4px 4px;
  font-size: 12px;
}

/* S */
.c-label--news-s {
  padding: 4px 4px;
  font-size: 11px;
}

/* =========================
   Price Base
========================= */
.c-price {
  margin: 0;
  display: inline-flex;
  align-items: flex-end;
  gap: 2px;
  line-height: 1;
  white-space: nowrap;
}

.c-price__yen,
.c-price__number {
  font-family: var(--font-en);
  font-weight: 400;
  line-height: 1;
}

.c-price__tax {
  font-family: var(--font-ja);
  font-weight: 400;
  line-height: 1;
}

/* =========================
   Price : M
========================= */
.c-price--m .c-price__yen {
  font-size: 20px;
}

.c-price--m .c-price__number {
  font-size: 26px;
}

.c-price--m .c-price__tax {
  font-size: 11px;
}

/* =========================
   Price : S
========================= */
.c-price--s .c-price__yen {
  font-size: 14px;
}

.c-price--s .c-price__number {
  font-size: 20px;
}

.c-price--s .c-price__tax {
  font-size: 10px;
}

/* =========================
   Pagination Base
========================= */
.c-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: var(--font-en);
  font-weight: 400;
  letter-spacing: 0;
}

.c-pagination__list {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.c-pagination__item {
  display: flex;
}

.c-pagination__link,
.c-pagination__current,
.c-pagination__text {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  padding: 10px;
  color: var(--color-text);
  line-height: 1;
  text-decoration: none;
  transition:
    color var(--transition-fast),
    opacity var(--transition-fast);
}

.c-pagination__link:hover,
.c-pagination__item.is-current .c-pagination__current {
  color: var(--color-neutral-500);
}

.c-pagination__link:hover {
  opacity: 1;
}

.c-pagination__item.is-disabled .c-pagination__link {
  opacity: 0.35;
  pointer-events: none;
}

.c-pagination__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

/* =========================
   Pagination M
========================= */
.c-pagination--m {
  font-size: 16px;
}

.c-pagination--m .c-pagination__list {
  gap: 8px;
}

.c-pagination--m .c-pagination__icon {
  font-size: 16px;
}

/* =========================
   Pagination S
========================= */
.c-pagination--s {
  font-size: 14px;
}

.c-pagination--s .c-pagination__list {
  gap: 4px;
}

.c-pagination--s .c-pagination__icon {
  font-size: 14px;
}