:root {
  --page-width: 1080px;
  --text: #333;
  --muted: #666;
  --line: #e5e5e5;
  --blue: #92daf4;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: #fff;
  font-family: "Noto Sans JP", sans-serif;
}

img {
  display: block;
  max-width: 100%;
}

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

.store-yahoo header a,
.store-yahoo header img {
  display: inline-block;
}

.store-fs header {
  width: min(20%, 204.8px);
  margin: 0 auto 20px;
}

.store-fs header a {
  display: inline;
}

.store-fs header img {
  display: inline;
  width: 100%;
}

.site-header {
  width: min(100% - 32px, var(--page-width));
  margin: 0 auto;
  padding: 24px 0 20px;
}

.site-header img {
  width: 150px;
  height: auto;
}

.site-header--fs {
  display: flex;
  justify-content: center;
}

.site-header--fs img {
  width: 190px;
}

.hero,
.fair-contents {
  width: min(100%, var(--page-width));
  margin: 0 auto;
}

#top {
  margin-bottom: 0;
}

.hero img,
.campaign-image img,
.section-title img,
.coupon-banner img {
  width: 100%;
  height: auto;
}

.campaign-image {
  margin: 44px 0 52px;
}

.fair-section {
  margin: 0 0 76px;
  scroll-margin-top: 16px;
}

.section-title {
  margin-bottom: 26px;
}

.coupon-banner {
  width: 94%;
  margin: 0 auto 32px;
}

.coupon-note {
  margin: 8px 0 0;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.5;
  text-align: center;
}

.campaign-block + .campaign-block {
  margin-top: 46px;
}

.mystery-product {
  width: 25%;
  margin: 0;
  padding: 0;
  list-style: none;
}

.product-list-wrap {
  width: calc(100% - 48px);
  margin: 0 auto;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.product-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  padding: 0;
  margin: 0;
  list-style: none;
}

.product-card {
  min-width: 0;
  padding: 0 12px;
}

.product-card__link {
  display: block;
}

.product-card__image {
  width: 100%;
  aspect-ratio: 1;
  overflow: hidden;
  background: #fff;
}

.product-card__image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: opacity 0.2s ease;
}

.product-card__link:hover .product-card__image img {
  opacity: 0.78;
}

.product-card__name {
  display: -webkit-box;
  min-height: 3.9em;
  margin: 12px 0 0;
  overflow: hidden;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.55;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.product-list-toggle {
  display: block;
  width: min(320px, calc(100% - 48px));
  margin: 28px auto 0;
  padding: 13px 24px;
  border: 1px solid #333;
  background: #fff;
  color: #333;
  cursor: pointer;
  font: inherit;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.product-list-toggle::after {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin: 0 0 3px 10px;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  content: "";
  transform: rotate(45deg);
}

.product-list-toggle:hover {
  background: #333;
  color: #fff;
}

.product-list-toggle[aria-expanded="true"]::after {
  margin-bottom: -2px;
  transform: rotate(225deg);
}

.back-to-top {
  width: min(100%, var(--page-width));
  margin: 0 auto 48px;
}

.back-to-top img {
  width: 100%;
}

.site-footer {
  margin-top: 40px;
  padding: 42px 20px 24px;
  border-top: 1px solid var(--line);
  background: #fff;
}

.site-footer__instagram {
  width: 30px;
  margin: 0 auto 24px;
}

.site-footer__nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px 28px;
  max-width: var(--page-width);
  margin: 0 auto;
  padding: 0;
  list-style: none;
  font-size: 13px;
}

.site-footer__nav a:hover {
  text-decoration: underline;
}

.site-footer__copyright {
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 11px;
  text-align: center;
}

@media (max-width: 820px) {
  .store-fs header {
    width: 40%;
  }

  .site-header {
    padding: 16px 0;
  }

  .site-header img {
    width: 112px;
  }

  .site-header--fs img {
    width: 150px;
  }

  .campaign-image {
    margin: 24px 0 34px;
  }

  .fair-section {
    margin-bottom: 52px;
  }

  .section-title {
    margin-bottom: 18px;
  }

  .coupon-banner {
    width: 96%;
    margin-bottom: 24px;
  }

  .coupon-note {
    margin-top: 6px;
    font-size: 3.2vw;
  }

  .campaign-block + .campaign-block {
    margin-top: 34px;
  }

  .mystery-product {
    width: 50%;
  }

  .product-list-wrap {
    width: calc(100% - 28px);
  }

  .product-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .product-card {
    padding: 0 8px;
  }

  .product-card__name {
    margin-top: 8px;
    font-size: 3.2vw;
  }

  .product-list-toggle {
    width: min(320px, calc(100% - 28px));
    margin-top: 22px;
    padding: 12px 20px;
    font-size: 3.6vw;
  }

  .site-footer {
    margin-top: 20px;
    padding-top: 32px;
  }

  .site-footer__nav {
    gap: 10px 18px;
    font-size: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .product-card__image img {
    transition: none;
  }
}