/* ===== ebook-page.css — ホワイトペーパー一覧・詳細 ===== */

/* ----- 共通 ----- */
.ebook-archive-page,
.ebook-single-page {
  width: 100%;
}

/* ===== スムーススクロール ===== */
html {
  scroll-behavior: smooth;
}

/* アンカー到達時のオフセット: PC = ヘッダー(86px) + セクションナビ(57px) + 余白(16px) */
#section-set,
#section-service,
#section-know {
  scroll-margin-top: 160px;
}

@media (max-width: 860px) {
  /* SP = ヘッダー(60px) + 余白(20px)（セクションナビは static のため不要） */
  #section-set,
  #section-service,
  #section-know {
    scroll-margin-top: 80px;
  }
}

/* ===== HERO ===== */
.ebook-hero {
  background: var(--color-gray, #F2F2F2);
  padding: 72px 20px;
  text-align: center;
}

.ebook-hero__inner {
  max-width: 680px;
  margin: 0 auto;
}

.ebook-hero__title {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-color-1);
  margin: 0 0 20px;
}

.ebook-hero__lead {
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-color-1);
  margin: 0;
}

@media (max-width: 860px) {
  .ebook-hero { padding: 48px 20px; }
  .ebook-hero__title { font-size: 26px; }
  .ebook-hero__lead { font-size: 15px; }
}

/* ===== SECTION NAV ===== */
.ebook-section-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  background: #fff;
  border-bottom: 1px solid #E8E8E8;
  padding: 0 20px;
  flex-wrap: wrap;
  position: sticky;
  top: 0;
  z-index: 10;
}

.ebook-section-nav__item {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 18px 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-color-1, #3C3C3C);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
  white-space: nowrap;
}

.ebook-section-nav__item:hover {
  color: var(--color-primary, #FC599B);
  border-bottom-color: var(--color-primary, #FC599B);
}

.ebook-section-nav__sep {
  color: #D0D0D0;
  font-size: 14px;
  padding: 0 4px;
}

@media (max-width: 860px) {
  .ebook-section-nav { position: static; }
  .ebook-section-nav__item { padding: 14px 12px; font-size: 12px; }
  .ebook-section-nav__sep { padding: 0; }
}

/* ===== SECTION 共通 ===== */
.ebook-section {
  padding: 64px 0;
}

.ebook-section + .ebook-section {
  border-top: 1px solid #F0F0F0;
}

.ebook-section__inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
}

.ebook-section__heading {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-color-1);
  margin: 0 0 32px;
  padding-bottom: 14px;
  position: relative;
}

.ebook-section__heading::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: #E8E8E8;
}

.ebook-section__heading::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 80px;
  height: 2px;
  background: linear-gradient(92.16deg, #F6877E 30.24%, #E857D8 100%);
  z-index: 1;
}

.ebook-section__empty {
  color: #888;
  font-size: 14px;
  padding: 40px 0;
  text-align: center;
}

@media (max-width: 860px) {
  .ebook-section { padding: 48px 0; }
  .ebook-section__heading { font-size: 18px; margin-bottom: 24px; }
}

/* ===== SET BANNER ===== */
.ebook-set-banner {
  display: grid;
  grid-template-columns: 1fr 160px;
  gap: 32px;
  align-items: center;
  background: var(--color-liner, linear-gradient(90deg, #F2E8F6 0%, #FFBDD0 100%));
  border-radius: 16px;
  padding: 48px 48px;
}

.ebook-set-banner__label {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-primary, #FC599B);
  background: rgba(252, 89, 155, 0.10);
  padding: 4px 10px;
  border-radius: 99px;
  margin: 0 0 14px;
}

.ebook-set-banner__title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-color-1);
  margin: 0 0 14px;
  line-height: 1.4;
}

.ebook-set-banner__desc {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-color-1);
  margin: 0 0 28px;
}

.ebook-set-banner__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 36px;
  border-radius: 6px;
  background: linear-gradient(92.16deg, #F6877E 30.24%, #E857D8 100%);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  transition: opacity 0.2s;
  box-shadow: 0 2px 8px rgba(232, 87, 216, 0.25);
}

.ebook-set-banner__cta:hover {
  opacity: 0.85;
}

.ebook-set-banner__deco {
  display: flex;
  align-items: center;
  justify-content: center;
}

.ebook-set-banner__deco svg {
  width: 140px;
  height: 140px;
}

@media (max-width: 860px) {
  .ebook-set-banner {
    grid-template-columns: 1fr;
    padding: 32px 24px;
    gap: 0;
  }
  .ebook-set-banner__deco { display: none; }
  .ebook-set-banner__title { font-size: 20px; }
  .ebook-set-banner__cta { width: 100%; justify-content: center; }
}

/* ----- ページヘッダー ----- */
/* .page-header / .page-back / .page-title は既存 style.css を流用 */

.ebook-archive-lead {
  margin-top: 8px;
  font-size: 15px;
  color: var(--text-color-1);
  line-height: 1.7;
}

/* ===== ARCHIVE — カードグリッド ===== */
.ebook-archive-wrap {
  padding: 40px 0 80px;
}

.ebook-archive-inner {
  max-width: 960px;
  margin: 0 auto;
}

.ebook-card-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  list-style: none;
  padding: 0;
  margin: 0;
}

@media (max-width: 860px) {
  .ebook-card-list {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
}

@media (max-width: 560px) {
  .ebook-card-list {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

.ebook-card {
  border: 1px solid #E8E8E8;
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
  transition: box-shadow 0.2s;
}

.ebook-card:hover {
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.10);
}

.ebook-card__link {
  display: flex;
  flex-direction: column;
  height: 100%;
  text-decoration: none;
  color: inherit;
}

.ebook-card__thumb {
  aspect-ratio: 21 / 11;
  overflow: hidden;
  background: var(--color-gray);
}

.ebook-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.ebook-card__thumb--noimg {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: #bbb;
}

.ebook-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 16px;
  gap: 8px;
}

.ebook-card__title {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text-color-1);
  margin: 0;
}

.ebook-card__summary {
  font-size: 13px;
  color: #666;
  line-height: 1.6;
  margin: 0;
}

.ebook-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  padding: 0;
  margin: 0 0 4px;
}

.ebook-card__tag {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 99px;
  background: var(--color-primary-pale, #F2E8F6);
  color: var(--color-accent, #30349B);
  white-space: nowrap;
}

.ebook-card__cta {
  margin-top: auto;
  display: block;
  text-align: center;
  padding: 11px 16px;
  border-radius: 6px;
  background: linear-gradient(92.16deg, #F6877E 30.24%, #E857D8 100%);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

/* 空状態 */
.ebook-archive-empty {
  text-align: center;
  color: #888;
  padding: 60px 0;
}

/* ページネーション */
.ebook-pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 48px;
}

.ebook-pagination .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 6px;
  border: 1px solid #E8E8E8;
  font-size: 14px;
  text-decoration: none;
  color: var(--text-color-1);
}

.ebook-pagination .page-numbers.current {
  background: var(--color-primary, #FC599B);
  color: #fff;
  border-color: var(--color-primary, #FC599B);
}

/* ===== SINGLE — 詳細ページ ===== */
.ebook-single-article {
  padding: 40px 0 80px;
}

.ebook-single-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 48px;
  align-items: start;
  max-width: 960px;
  margin: 0 auto;
}

@media (max-width: 860px) {
  .ebook-single-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

/* カバー画像 */
.ebook-single-cover {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.10);
  position: sticky;
  top: 100px;
}

@media (max-width: 860px) {
  .ebook-single-cover {
    position: static;
    max-width: 340px;
    margin: 0 auto;
  }
}

.ebook-single-cover img {
  width: 100%;
  height: auto;
  display: block;
}

/* 本文 */
.ebook-single-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.ebook-single-title {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-color-1);
  margin: 0;
}

@media (max-width: 860px) {
  .ebook-single-title {
    font-size: 22px;
  }
}

.ebook-single-excerpt {
  font-size: 15px;
  line-height: 1.75;
  color: #555;
  margin: 0;
}

.ebook-single-body {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-color-1);
}

.ebook-single-body p {
  margin: 0 0 1em;
}

/* こんな方におすすめ */
.ebook-single-recommend {
  background: var(--color-gray, #F2F2F2);
  border-radius: 12px;
  padding: 24px 28px;
}

.ebook-single-recommend__heading {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-color-1);
  margin: 0 0 16px;
}

.ebook-single-recommend__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.ebook-single-recommend__item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-color-1);
  line-height: 1.5;
}

.ebook-single-recommend__icon {
  flex-shrink: 0;
}

/* CTA */
.ebook-single-cta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.ebook-single-cta__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 40px;
  border-radius: 99px;
  background: var(--color-liner-main, linear-gradient(92.16deg, #F6877E 30.24%, #E857D8 100%));
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  transition: opacity 0.2s;
  min-width: 260px;
  text-align: center;
}

.ebook-single-cta__btn:hover {
  opacity: 0.85;
}

@media (max-width: 560px) {
  .ebook-single-cta__btn {
    width: 100%;
    min-width: 0;
  }
}

.ebook-single-cta__note {
  font-size: 13px;
  color: #888;
  margin: 0;
}

/* ===== 外部媒体記事カード ===== */
.ebook-card--media .ebook-card__tag--media {
  background: #f3f4f6;
  color: #374151;
  border: 1px solid #e5e7eb;
}

.earnedmedia-card__read-more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  color: var(--color-primary, #FC599B);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.earnedmedia-card__read-more svg {
  flex-shrink: 0;
}