/* =========================================
   LAYOUT — 左右2カラム
   ========================================= */
.dc-section {
  padding: 80px 0;
}

.dc-layout {
  display: flex;
  align-items: flex-start;
  gap: 60px;
}

.dc-left {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-width: 0;
}

.dc-right {
  flex: 0 0 440px;
}


/* =========================================
   LEFT — 資料紹介
   ========================================= */
/* =========================================
   LEFT — 資料紹介（スライダー用にアップデート）
   ========================================= */
.dc-intro__image {
  border-radius: 4px;
  overflow: hidden;
  position: relative; /* ページネーション配置用 */
  padding-bottom: 20px; /* ドットを置くスペース */
}

/* 横スクロール対応のコンテナ */
.dc-slider-container {
  overflow-x: auto;
  scroll-snap-type: x mandatory; /* スナップさせてピタッと止まるようにする */
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch; /* iOSでのスワイプを滑らかにする */
}

/* ラッパー（横並び） */
.dc-slider-wrapper {
  display: flex;
  width: 100%;
}

/* 各スライド（横幅100%固定） */
.dc-slide {
  flex: 0 0 100%;
  width: 100%;
  scroll-snap-align: start; /* スナップの基準位置 */
}

.dc-intro__image img {
  width: 100%;
  height: auto;
  display: block;
}

/* スライダーの不要なスクロールバーを非表示にする */
.dc-slider-container::-webkit-scrollbar {
  display: none;
}
.dc-slider-container {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

/* ページネーション（ドットエリア） */
.dc-slider-pagination {
  position: absolute;
  bottom: 2px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  gap: 8px;
  z-index: 10;

}

/* ドットの見た目 */
.dc-dot {

  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.2); /* 通常時の薄いグレー */
  transition: background 0.3s, transform 0.3s;
  cursor: pointer;
}

/* アクティブ（現在表示中）のドット */
.dc-dot.active {
  background: var(--color-blue, #008cbb); /* サイトのメインカラー */
  transform: scale(1.2);
}


.email_txt {
  font-size: 12px;
  color: #e90202;
  font-weight: 700;
}

.email_txt .tiny {
  font-size: 11px;
  font-weight: 500;
}


/* 矢印ナビゲーションボタン */
.dc-slider-prev,
.dc-slider-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  border: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-dark);
  transition: background 0.2s, box-shadow 0.2s;
}

.dc-slider-prev svg,
.dc-slider-next svg {
width: 10px;
height: 16px;
}


.dc-slider-prev { left: 10px; }
.dc-slider-next { right: 10px; }

.dc-slider-prev:hover,
.dc-slider-next:hover {
  background: #fff;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
}
.dc-intro__label {
  display: flex;
  align-items: center;
  gap: 10px;
}

.dc-intro__label-line {
  display: block;
  width: 30px;
  height: 2px;
  background: var(--color-blue);
}

.dc-intro__label-text {
  font-family: var(--font-poppins);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--color-blue);
  text-transform: uppercase;
}

.dc-intro__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 28px;
  line-height: 1.45;
  color: var(--color-blue);
}

.dc-intro__catch {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-blue);
}

.dc-intro__desc {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 16px;
  line-height: 1.85;
  color: var(--color-dark);
}

.dc-intro__features {
  display: flex;
  flex-direction: column;
  gap: 15px;
  padding: 20px;
  background: var(--color-blue-light);
  border-left: 4px solid var(--color-blue);
  border-radius: 0 4px 4px 0;
}

.dc-intro__features-heading {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 21px;
  letter-spacing: 0.5px;
  color: var(--color-blue);
}

.dc-intro__list_ttl {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.5px;
  line-height: 1.75;
  color: var(--color-dark);
}

.dc-intro__list_etc {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.5px;
  color: var(--color-dark);
  text-align: right;
}

.dc-intro__features-list {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding-left: 4px;
}

.dc-intro__features-list li {
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-dark);
  padding-left: 18px;
  position: relative;
  font-weight: 500;
}

.list_wrap {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.dc-intro__features-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-blue);
}


/* =========================================
   RIGHT — フォームカード
   ========================================= */
.dc-form-card {
  background: var(--color-white);
  border-radius: 8px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  padding: 40px 36px;
  position: sticky;
  top: 100px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.dc-form-heading {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 24px;
  line-height: 1.5;
  color: var(--color-dark);
}

.dc-form-heading__en {
  font-family: var(--font-poppins);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 2.5px;
  color: var(--color-blue);
  text-transform: uppercase;
}

.dc-form-desc {
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.8;
  color: var(--color-muted);
  margin-bottom: 8px;
}

.dc-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.dc-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.dc-field__label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 13px;
  color: var(--color-dark);
}

.dc-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px 7px;
  border-radius: 2px;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 10px;
  letter-spacing: 0.5px;
  line-height: 1.4;
}

.dc-badge--required {
  background: var(--color-orange);
  color: var(--color-white);
}

.dc-badge--optional {
  background: var(--color-border);
  color: var(--color-muted);
}

.dc-field__input,
.dc-field__textarea {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--color-dark);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 10px 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
  box-sizing: border-box;
}

.dc-field__input::placeholder,
.dc-field__textarea::placeholder {
  color: #bbbbbb;
}

.dc-field__textarea::placeholder {
  font-size: 12px;
}

.dc-field__input:focus,
.dc-field__textarea:focus {
  border-color: var(--color-blue);
  box-shadow: 0 0 0 3px rgba(0, 140, 187, 0.12);
}

.dc-field__textarea {
  resize: vertical;
  min-height: 100px;
  line-height: 1.8;
}

.dc-field__note {
  font-family: var(--font-sans);
  font-size: 11px;
  color: var(--color-muted);
  line-height: 1.6;
}

.dc-submit {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  margin-top: 4px;
}

.dc-submit__privacy {
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--color-muted);
  text-align: center;
  line-height: 1.8;
}

.dc-submit__privacy a {
  color: var(--color-blue);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.dc-submit__privacy a:hover {
  opacity: 0.75;
}

.dc-submit__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: fit-content;
  padding: 16px 50px;
  background: var(--color-orange);
  color: var(--color-white);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.5px;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.15s;
}

.dc-submit__btn:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

.dc-submit__icon {
  width: 18px;
  height: 18px;
  filter: brightness(0) invert(1);
}


/* =========================================
   レスポンシブ
   ========================================= */
@media (max-width: 1170px) {
  .dc-right {
    flex: 0 0 380px;
  }

  .dc-layout {
    gap: 48px;
  }
}

@media (max-width: 840px) {
  .dc-section {
    padding: 50px 0;
  }

  .dc-layout {
    flex-direction: column;
    gap: 48px;
  }

  .dc-right {
    flex: none;
    width: 100%;
  }

  .dc-form-card {
    position: static;
    padding: 32px 24px;
  }

  .dc-intro__title {
    font-size: 24px;
  }
  .dc-intro__desc {
    line-height: 1.75;
  }
}

@media (max-width: 640px) {
  .dc-section {
    padding: 40px 0;
  }

  .dc-form-card {
    padding: 24px 16px;
  }

  .dc-intro__features-heading {
    font-size: 18px;
  }
  /* 矢印ナビゲーションボタン */
.dc-slider-prev,
.dc-slider-next {

  width: 28px;
  height: 28px;
}

.dc-slider-prev svg,
.dc-slider-next svg {
width: 8px;
height: 13px;
}
.dc-slider-prev svg {
  margin-right: 2px;
}
.dc-slider-next svg {
  margin-left: 2px;
}
.dc-slider-prev, .dc-slider-next {
  top: 46%;
}

}