.coupon-page,
.coupon-page * {
  box-sizing: border-box;
  color: #585756;
}

.coupon-page {
  font-family: "Noto Sans JP", sans-serif;
  line-height: 1.7;
}

.coupon-page a,
.coupon-page a:visited,
.coupon-page a:hover {
  color: #585756;
}

/* ページ上部 */
.coupon-page__hero {
  position: relative;
  overflow: hidden;
  border-top: 4px solid #085A9B;
  border-bottom: 1px solid #d9e3ea;
  background: linear-gradient(115deg, #f5f8fa 0%, #edf4f8 100%);
}

.coupon-page__hero:before {
  position: absolute;
  top: -230px;
  right: -120px;
  width: 440px;
  height: 440px;
  border: 1px solid rgba(8, 90, 155, 0.14);
  border-radius: 50%;
  content: "";
}

.coupon-page__hero-inner {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 290px;
  padding: 54px 20px;
}

.coupon-page__hero-copy {
  position: relative;
  z-index: 2;
  max-width: 690px;
  padding-left: 18px;
  border-left: 4px solid #085A9B;
}

.coupon-page__eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 15px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.coupon-page__eyebrow:before {
  display: inline-block;
  width: 26px;
  height: 1px;
  background: #085A9B;
  content: "";
}

.coupon-page .coupon-page__title {
  margin: 0;
  font-size: 40px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0.04em;
}

.coupon-page__lead {
  max-width: 680px;
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.9;
}

/* 右側の装飾 */
.coupon-page__hero-art {
  position: absolute;
  top: 50%;
  right: 5%;
  width: 190px;
  height: 122px;
  border: 1px solid rgba(8, 90, 155, 0.38);
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 10px 10px 0 rgba(8, 90, 155, 0.06);
  transform: translateY(-50%) rotate(5deg);
}

.coupon-page__hero-art:before {
  position: absolute;
  top: 13px;
  bottom: 13px;
  left: 68%;
  border-left: 1px dashed rgba(8, 90, 155, 0.42);
  content: "";
}

.coupon-page__hero-art-line {
  position: absolute;
  top: 32px;
  left: 23px;
  width: 52px;
  height: 2px;
  background: #085A9B;
  box-shadow:
    0 13px 0 rgba(8, 90, 155, 0.38),
    0 26px 0 rgba(8, 90, 155, 0.2);
}

.coupon-page__hero-art-notch {
  position: absolute;
  top: 50%;
  left: calc(68% - 7px);
  width: 14px;
  height: 14px;
  border: 1px solid rgba(8, 90, 155, 0.42);
  border-radius: 50%;
  background: #edf4f8;
  transform: translateY(-50%);
}

/* キャンペーン一覧 */
.coupon-page__listing {
  background: #f8fafb;
}

.coupon-page__content {
  padding: 46px 20px 64px;
}

.coupon-page__section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin: 0 0 23px;
  padding-bottom: 14px;
  border-bottom: 1px solid #d9e3ea;
}

.coupon-page .coupon-page__section-heading h2 {
  position: relative;
  margin: 0;
  padding-left: 13px;
  font-size: 22px;
  font-weight: 500;
  line-height: 1.5;
}

.coupon-page .coupon-page__section-heading h2:before {
  position: absolute;
  top: 4px;
  bottom: 4px;
  left: 0;
  width: 3px;
  background: #085A9B;
  content: "";
}

.coupon-page__section-heading p {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
}

/* カード一覧 */
.coupon-cards {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  justify-content: center;
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.coupon-cards__item {
  display: flex;
  flex: 1 1 300px;
  max-width: 360px;
  min-width: 0;
}

.coupon-card {
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border: 1px solid #d9e3ea;
  border-radius: 4px;
  background: #fff;
  box-shadow: 0 5px 18px rgba(8, 90, 155, 0.05);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.coupon-card:hover {
  transform: translateY(-3px);
  border-color: #b8cbd8;
  box-shadow: 0 10px 24px rgba(8, 90, 155, 0.1);
}

/* 各キャンペーン画像 */
.coupon-card__image-link {
  display: block;
  overflow: hidden;
  border-bottom: 3px solid #085A9B;
  background: #edf3f7;
  line-height: 0;
}

.coupon-page .coupon-card__image-link:focus {
  outline: 2px solid #085A9B;
  outline-offset: -3px;
}

.coupon-card__image {
  display: block;
  width: 100%;
  height: auto;
}

/* カード本文 */
.coupon-card__body {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  padding: 21px 22px 0;
}

.coupon-card__status {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 15px;
  font-size: 12px;
  font-weight: 700;
}

.coupon-card__status-dot {
  display: inline-block;
  flex: 0 0 7px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #085A9B;
}

.coupon-card__category {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 7px;
  font-size: 12px;
  font-weight: 500;
}

.coupon-card__category:before {
  display: inline-block;
  width: 14px;
  height: 1px;
  background: #085A9B;
  content: "";
}

.coupon-page .coupon-card h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 500;
  line-height: 1.55;
}

.coupon-card__description {
  margin: 0;
  font-size: 13px;
  line-height: 1.85;
}

/* 詳細リンク */
.coupon-card__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 58px;
  margin: auto -22px 0;
  padding: 12px 18px 12px 19px;
  border-top: 1px solid #d9e3ea;
  border-left: 3px solid #085A9B;
  background: #f1f6f9;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.6;
  text-decoration: none;
  transition: background-color 0.2s ease;
}

.coupon-card__link:hover {
  background: #e8f0f5;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.coupon-page .coupon-card__link:focus {
  outline: 2px solid #085A9B;
  outline-offset: -3px;
}

.coupon-card__arrow {
  position: relative;
  display: inline-block;
  flex: 0 0 30px;
  width: 30px;
  height: 30px;
  border: 1px solid rgba(8, 90, 155, 0.55);
  border-radius: 50%;
  transition: transform 0.2s ease;
}

.coupon-card__arrow:before {
  position: absolute;
  top: 14px;
  left: 6px;
  width: 14px;
  height: 1px;
  background: #085A9B;
  content: "";
}

.coupon-card__arrow:after {
  position: absolute;
  top: 10px;
  right: 6px;
  width: 7px;
  height: 7px;
  border-top: 1px solid #085A9B;
  border-right: 1px solid #085A9B;
  transform: rotate(45deg);
  content: "";
}

.coupon-card__link:hover .coupon-card__arrow {
  transform: translateX(3px);
}

.coupon-page__note {
  margin: 20px 0 0;
  padding-left: 11px;
  border-left: 2px solid #085A9B;
  font-size: 12px;
  line-height: 1.8;
}

/* スマートフォン */
@media screen and (max-width: 767px) {
  .coupon-page__hero-inner {
    min-height: 0;
    padding: 42px 18px;
  }

  .coupon-page__hero-copy {
    max-width: none;
  }

  .coupon-page__hero-art {
    display: none;
  }

  .coupon-page .coupon-page__title {
    font-size: 31px;
  }

  .coupon-page__lead {
    font-size: 14px;
  }

  .coupon-page__content {
    padding: 33px 18px 48px;
  }

  .coupon-page__section-heading {
    display: block;
    margin-bottom: 19px;
  }

  .coupon-page .coupon-page__section-heading h2 {
    font-size: 20px;
  }

  .coupon-page__section-heading p {
    margin-top: 6px;
  }

  .coupon-cards__item {
    flex-basis: 100%;
    max-width: 520px;
  }

  .coupon-card__body {
    padding: 20px 20px 0;
  }

  .coupon-card__link {
    margin-right: -20px;
    margin-left: -20px;
  }
}

@media screen and (max-width: 400px) {
  .coupon-page .coupon-page__title {
    font-size: 27px;
  }
}