@charset "UTF-8";

.csai-campaign-page {
  padding: 0 20px 72px;
}

.csai-campaign-container {
  max-width: 1080px;
  margin: 0 auto;
}

.csai-campaign-hero {
  position: relative;
  overflow: hidden;
  padding: 30px 32px 28px;
  background-color: #123b4a;
  background-image: linear-gradient(135deg, rgba(0, 175, 204, .22) 0 1px, transparent 1px 26px);
  border-bottom: 6px solid #fbab18;
  color: #ffffff;
  text-align: center;
}

.campaign-eyebrow {
  position: relative;
  z-index: 1;
  display: inline-block;
  margin: 0 0 10px;
  padding: 5px 12px;
  border: 1px solid rgba(255, 255, 255, .55);
  color: #d5f7ff;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.csai-campaign-hero h1 {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  color: #ffffff;
  font-size: clamp(1.45rem, 2.3vw, 1.5rem);
  line-height: 1.3;
  text-wrap: balance;
}

.campaign-summary {
  max-width: 800px;
  margin: 28px auto 0;
  padding: 24px 30px;
  background: #ffffff;
  border-left: 4px solid #00afcc;
  box-shadow: 0 4px 16px rgba(31, 41, 55, .08);
  text-align: center;
}

.campaign-summary>p:first-child {
  max-width: 760px;
  margin: 0 auto;
  color: #334155;
  font-size: 1.05rem;
  line-height: 1.9;
}

.campaign-period {
  display: table;
  margin: 18px auto 0;
  padding: 9px 18px;
  background: #ffffff;
  color: #9a5400;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: .03em;
}

.campaign-introduction,
.campaign-product-card,
.campaign-ended {
  margin-top: 32px;
  padding: 32px;
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(31, 41, 55, .08);
}

.campaign-introduction h2,
.campaign-product-heading h2,
.campaign-ended h2 {
  margin: 0;
  color: #1e293b;
}

.campaign-introduction ul {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.campaign-introduction li {
  padding: 16px 0;
  border-top: 1px solid #e5e7eb;
}

.campaign-product-card+.campaign-product-card {
  margin-top: 28px;
}

.campaign-product-heading {
  padding-bottom: 18px;
  border-bottom: 3px solid #fbab18;
}

.campaign-product-heading p {
  margin: 0 0 6px;
  color: #a85b00;
  font-weight: 700;
}

.campaign-product-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(330px, .9fr);
  gap: 32px;
  margin-top: 28px;
}

.campaign-product-details h3 {
  margin: 0 0 16px;
  font-size: 1.25rem;
}

.campaign-product-details p {
  margin: 0;
}

.campaign-prices {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.campaign-prices p {
  padding: 12px 14px;
  background: #f8fafc;
  font-weight: 700;
}

.campaign-prices span {
  display: inline-block;
  min-width: 90px;
  margin-right: 10px;
  color: #64748b;
  font-size: .9rem;
}

.campaign-sale-price {
  border-left: 5px solid #e60012;
  color: #d00000;
  font-size: 1.2rem;
}

.campaign-sale-price span {
  color: #d00000;
}

.campaign-sale-price small {
  font-size: .9rem;
}

.campaign-product-images {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  align-content: start;
}

.campaign-product-images a {
  display: block;
}

.campaign-product-images img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  background: #f8fafc;
  transition: opacity .2s;
}

.campaign-product-images a:hover img {
  opacity: .8;
}

.campaign-text-link {
  display: inline-block;
  margin-top: 20px;
  color: #9a5400;
  font-weight: 700;
  text-decoration: underline;
}

.campaign-order-link,
.campaign-order-link:visited {
  display: block;
  width: fit-content;
  margin: 28px auto 0;
  padding: 13px 28px;
  background: #e60012;
  border-radius: 6px;
  color: #ffffff;
  font-weight: 700;
  text-decoration: none;
}

.campaign-order-link:hover {
  opacity: .85;
}

.campaign-ended {
  text-align: center;
}

.campaign-ended p {
  margin: 16px 0 0;
}

@media (max-width: 720px) {
  .csai-campaign-page {
    padding: 0 16px 56px;
  }

  .csai-campaign-hero,
  .campaign-summary,
  .campaign-introduction,
  .campaign-product-card,
  .campaign-ended {
    padding: 32px 20px;
  }

  .csai-campaign-hero h1 {
    font-size: 1.45rem;
  }

  .campaign-summary>p:first-child {
    font-size: 1rem;
  }

  .campaign-product-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .campaign-product-images {
    max-width: 500px;
    margin: 0 auto;
  }

  .campaign-order-link {
    width: 100%;
    text-align: center;
  }
}

/* =========================================================
   ワークブック訴求・5ステップ統合セクション
   既存の商品カード用スタイルは下部で継続使用
   ========================================================= */
.csai-new-content {
  --csai-navy: #24415a;
  --csai-blue: #2878d0;
  --csai-light-blue: #77bdf2;
  --csai-orange: #f29a3f;
  --csai-purple: #8267c7;
  --csai-green: #49a86b;
  --csai-yellow: #f2c94c;
  --csai-muted: #526879;
  --csai-pale: #f2f8fc;
  --csai-line: #dbe7ef;
  --csai-shadow: 0 8px 24px rgba(36, 65, 90, .11);
  color: #173247;
  line-height: 1.75;
}

.csai-new-content * {
  box-sizing: border-box;
}

.csai-new-content img {
  display: block;
  max-width: 100%;
  height: auto;
}

.csai-campaign-hero {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 34px;
  align-items: center;
  padding: 36px 30px 46px;
  color: #173247;
  text-align: left;
  background: linear-gradient(135deg, #edf7ff 0%, #fff 55%, #f5fbff 100%);
  border-bottom: 6px solid var(--csai-yellow);
}

.csai-hero-visual {
  min-height: 320px;
  display: grid;
  place-items: center;
  padding: 22px;
  border-radius: 24px;
  background: #fff;
  box-shadow: var(--csai-shadow);
}

.csai-hero-products {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  align-items: end;
}

.csai-hero-products img {
  width: 100%;
  max-height: 250px;
  object-fit: contain;
}

.csai-campaign-hero .campaign-eyebrow {
  margin: 0 0 6px;
  padding: 0;
  border: 0;
  color: var(--csai-blue);
  font-weight: 900;
  letter-spacing: .1em;
}

.csai-main-catch {
  margin: 0 0 10px;
  color: var(--csai-blue);
  font-size: clamp(1rem, 2.2vw, 1.3rem);
  font-weight: 900;
  letter-spacing: .08em;
}

.csai-campaign-hero h1 {
  max-width: none;
  margin: 0 0 18px;
  color: var(--csai-navy);
  font-size: clamp(2rem, 4.7vw, 1.5rem);
  line-height: 1.22;
  text-align: left;
}

.csai-campaign-offer {
  margin: 18px 0 10px;
  padding: 15px 17px;
  border-left: 6px solid var(--csai-yellow);
  border-radius: 11px;
  background: #fff6c7;
  font-size: 1.08rem;
  font-weight: 900;
}

.csai-hero-subcopy {
  margin: 0 0 15px;
  color: var(--csai-navy);
  font-weight: 900;
}

.csai-new-content .campaign-period {
  display: inline-block;
  margin: 0 0 20px;
  padding: 6px 13px;
  color: #fff;
  background: var(--csai-navy);
  border-radius: 999px;
}

.csai-button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.csai-action-button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 10px 21px;
  border: 2px solid var(--csai-blue);
  border-radius: 999px;
  text-decoration: none;
  font-weight: 900;
  transition: .2s;
}

.csai-action-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 7px 18px rgba(40, 120, 208, .2);
}

.csai-action-button--primary {
  color: #fff;
  background: var(--csai-blue);
}

.csai-action-button--secondary {
  color: var(--csai-blue);
  background: #fff;
}

.csai-section {
  padding: 62px 28px;
}

.csai-section--soft {
  background: var(--csai-pale);
}

.csai-section-title {
  margin: 0 0 14px;
  color: var(--csai-navy);
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  line-height: 1.35;
  text-align: center;
}

.csai-section-lead {
  max-width: 760px;
  margin: 0 auto 34px;
  color: var(--csai-muted);
  text-align: center;
}

.csai-introduction {
  max-width: 820px;
  margin: 32px auto 0;
  padding: 26px;
  border: 1px solid var(--csai-line);
  border-radius: 20px;
  background: #fff;
  box-shadow: var(--csai-shadow);
}

.csai-introduction p {
  margin: 0 0 10px;
}

.csai-introduction p:last-child {
  margin-bottom: 0;
}

.csai-steps {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.csai-step {
  position: relative;
  padding: 20px 10px;
  border: 1px solid var(--csai-line);
  border-radius: 18px;
  background: #fff;
  box-shadow: var(--csai-shadow);
  text-align: center;
}

.csai-step:not(:last-child)::after {
  content: "›";
  position: absolute;
  top: 82px;
  right: -12px;
  z-index: 2;
  color: var(--csai-blue);
  font-size: 1.8rem;
  font-weight: 900;
}

.csai-step>span {
  display: inline-block;
  margin-bottom: 7px;
  padding: 3px 10px;
  border-radius: 999px;
  color: #fff;
  background: var(--csai-navy);
  font-size: .75rem;
  font-weight: 900;
}

.csai-step img {
  width: 122px;
  height: 122px;
  margin: 0 auto 6px;
  object-fit: contain;
}

.csai-step h3 {
  margin: 0 0 5px;
  color: var(--csai-navy);
  font-size: 1.02rem;
}

.csai-step p {
  margin: 0;
  color: var(--csai-muted);
  font-size: .86rem;
  line-height: 1.55;
}

.csai-learning-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.csai-learning-grid article {
  padding: 19px;
  border-radius: 15px;
  background: #fff;
  box-shadow: var(--csai-shadow);
}

.csai-learning-grid strong {
  display: block;
  margin-bottom: 3px;
  color: var(--csai-blue);
  font-size: 1.03rem;
}

.csai-learning-grid p {
  margin: 0;
  color: var(--csai-muted);
  font-size: .91rem;
}

.csai-age-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.csai-age-grid article {
  padding: 27px;
  border: 1px solid var(--csai-line);
  border-radius: 20px;
  background: #fff;
  box-shadow: var(--csai-shadow);
}

.csai-age-grid span {
  display: inline-block;
  margin-bottom: 10px;
  padding: 4px 12px;
  border-radius: 999px;
  color: #fff;
  background: var(--csai-blue);
  font-weight: 900;
}

.csai-age-grid article:nth-child(2) span {
  background: var(--csai-purple);
}

.csai-age-grid h3 {
  margin: 0 0 8px;
  color: var(--csai-navy);
  font-size: 1.25rem;
}

.csai-age-grid p {
  margin: 0 0 12px;
  color: var(--csai-muted);
}

.csai-age-grid a {
  color: var(--csai-blue);
  font-weight: 900;
}

.csai-support-grid {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 30px;
  align-items: center;
}

.csai-workbook-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  padding: 18px;
  border-radius: 20px;
  background: #f7fafc;
}

.csai-workbook-images img {
  width: 100%;
  min-height: 185px;
  object-fit: contain;
}

.csai-support-list {
  display: grid;
  gap: 10px;
}

.csai-support-list article {
  padding: 15px 17px;
  border-left: 6px solid var(--csai-blue);
  border-radius: 11px;
  background: #fff;
  box-shadow: var(--csai-shadow);
}

.csai-support-list article:nth-child(2) {
  border-color: var(--csai-orange)
}

.csai-support-list article:nth-child(3) {
  border-color: var(--csai-purple)
}

.csai-support-list article:nth-child(4) {
  border-color: var(--csai-green)
}

.csai-support-list article:nth-child(5) {
  border-color: var(--csai-yellow)
}

.csai-support-list h3 {
  margin: 0 0 2px;
  color: var(--csai-navy);
  font-size: 1rem;
}

.csai-support-list p {
  margin: 0;
  color: var(--csai-muted);
  font-size: .9rem;
}

.csai-open-ended {
  display: grid;
  grid-template-columns: .6fr 1.4fr;
  gap: 28px;
  align-items: center;
  padding: 38px;
  border-radius: 26px;
  color: #fff;
  background: linear-gradient(135deg, var(--csai-navy), #315f7d);
  box-shadow: var(--csai-shadow);
}

.csai-open-ended>div {
  color: var(--csai-yellow);
  font-size: 5.8rem;
  font-weight: 900;
  line-height: 1;
  text-align: center;
}

.csai-open-ended h2 {
  margin: 0 0 10px;
  color: #fff;
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  line-height: 1.3;
}

.csai-open-ended p {
  margin: 0 0 8px;
  color: #e7f2f9;
}

.csai-education-note {
  text-align: center;
}

.csai-education-note h3 {
  margin: 0 0 7px;
  color: var(--csai-navy);
}

.csai-education-note p {
  margin: 0;
  color: var(--csai-muted);
}

@media(max-width:900px) {
  .csai-campaign-hero {
    grid-template-columns: 1fr;
  }

  .csai-steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .csai-step:last-child {
    grid-column: 1/-1;
    width: 100%;
    max-width: 420px;
    justify-self: center;
  }

  .csai-step::after {
    display: none;
  }

  .csai-learning-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .csai-support-grid {
    grid-template-columns: 1fr;
  }
}

@media(max-width:720px) {

  .csai-campaign-hero,
  .csai-section {
    padding: 40px 18px;
  }

  .csai-campaign-hero h1 {
    font-size: 1.5rem;
  }

  .csai-steps,
  .csai-learning-grid,
  .csai-age-grid,
  .csai-open-ended {
    grid-template-columns: 1fr;
  }

  .csai-step:last-child {
    grid-column: auto;
    max-width: none;
  }

  .csai-step {
    display: grid;
    grid-template-columns: 88px 1fr;
    column-gap: 12px;
    align-items: center;
    text-align: left;
  }

  .csai-step>span {
    grid-column: 1/-1;
    justify-self: start;
  }

  .csai-step img {
    width: 88px;
    height: 88px;
    margin: 0;
    grid-row: span 2;
  }

  .csai-button-row {
    flex-direction: column;
  }

  .csai-action-button {
    width: 100%;
  }

  .csai-open-ended {
    padding: 28px 20px;
    text-align: center;
  }

  .csai-open-ended>div {
    font-size: 4rem;
  }
}


/* =========================================================
   5ステップ画像サイズ調整 v3
   アイコンの透明余白を考慮し、表示枠を小さく固定する
   ========================================================= */
.csai-new-content .csai-step {
  padding: 16px 8px 18px;
}

.csai-new-content .csai-step img {
  display: block;
  width: 88px !important;
  height: 88px !important;
  max-width: 88px !important;
  margin: 4px auto 8px !important;
  object-fit: contain;
}

.csai-new-content .csai-step:not(:last-child)::after {
  top: 70px;
}

@media (max-width: 900px) {
  .csai-new-content .csai-step img {
    width: 78px !important;
    height: 78px !important;
    max-width: 78px !important;
  }
}

@media (max-width: 720px) {
  .csai-new-content .csai-steps {
    gap: 10px;
  }

  .csai-new-content .csai-step {
    display: grid;
    grid-template-columns: 64px minmax(0, 1fr);
    grid-template-rows: auto auto auto;
    column-gap: 14px;
    align-items: center;
    padding: 12px 14px;
    min-height: 98px;
  }

  .csai-new-content .csai-step>span {
    grid-column: 2;
    grid-row: 1;
    justify-self: start;
    margin: 0 0 2px;
    padding: 2px 9px;
    font-size: .68rem;
  }

  .csai-new-content .csai-step img {
    grid-column: 1;
    grid-row: 1 / 4;
    width: 58px !important;
    height: 58px !important;
    max-width: 58px !important;
    margin: 0 !important;
  }

  .csai-new-content .csai-step h3 {
    grid-column: 2;
    grid-row: 2;
    margin: 0 0 1px;
    font-size: .96rem;
    line-height: 1.35;
  }

  .csai-new-content .csai-step p {
    grid-column: 2;
    grid-row: 3;
    font-size: .82rem;
    line-height: 1.45;
  }
}