/* ============================================================
   onsei.css — 音声ダウンロード（統合＋追加パッチ 完全版 v2）
   ============================================================ */
:root {
  --brand: #0072ba;
  --ink: #111;
  --text: #333;
  --muted: #6b7280;
  --line: #d1d5db;
  --panel: #f6faff;
  --radius: 6px;
}

/* ===== 基本 ===== */
.onsei .container {
  gap: 0;
}

/* ===== k-books準拠 見出しライン ===== */
.onsei .kbpdf-heading {
  position: relative;
  margin: 18px 0 10px;
  padding: 6px 0 6px 14px;
  font-size: 18px;
  font-weight: 800;
  color: #111;
}
.onsei .kbpdf-heading::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: #0072ba;
  border-radius: 4px;
}
.onsei .kbpdf-divider {
  height: 0;
  border: 0;
  border-bottom: 1px solid #e5e7eb;
  margin: 14px 0 22px;
}

/* 独自見出し */
.onsei-lead-heading {
  position: relative;
  margin: 18px 0 10px;
  padding: 6px 0 6px 14px;
  font-size: 18px;
  font-weight: 800;
  color: var(--ink);
}
.onsei-lead-heading::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--brand);
  border-radius: 4px;
}
.onsei-divider {
  height: 0;
  border: 0;
  border-bottom: 2px solid #d9d9d9;
  margin: 30px 0;
}

/* 注意カード（一覧） */
.onsei-intro {
  margin-bottom: 28px;
}
.onsei-notes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.kbpdf-page-subtitle {
  font-size: 30px;
  font-weight: 500;
  margin: 70px 20px 0;
  text-align: center;
}
.onsei-article__content .onsei-intro p {
  font-size: 24px;
  font-weight: 400;
}
.onsei-article__content .onsei-intro ul {
  font-size: 20px;
  font-weight: 400;
}
.onsei-article__content .onsei-intro ul li {
  font-size: inherit;
  font-weight: inherit;
}

.onsei-article__content h2 {
  font-size: 24px;
  margin-bottom: 30px;
}

.onsei-article__content ul {
  list-style: disc outside;
  padding-left: 1.2em;
}

@media (max-width: 879px) {
  .onsei-notes {
    grid-template-columns: 1fr;
  }
  .onsei-divider {
    margin: 14px 0 20px;
    border-bottom: 1px solid #d9d9d9;
  }
}
.onsei-note {
  background: #fff;
  border: 1px solid #999999;
  border-radius: var(--radius);
  overflow: hidden;
}
.onsei-note__title {
  margin: 0;
  padding: 20px 20px 30px;
  text-align: center;
  color: #111;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.4;
}
.onsei-note__body {
  padding: 0 20px 26px;
}
.onsei-note__body ul {
  list-style: disc outside;
  padding-left: 1.2em;
  margin: 0;
}
.onsei-note__body ul li {
  margin: 0 0 0.35em;
}

/* ============================================================
   タブ（onsei--tabline）
   ============================================================ */
.onsei.onsei--tabline .onsei-tabs {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.onsei.onsei--tabline .onsei-tabs::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  border-bottom: 2px solid var(--line);
  z-index: 1;
}
.onsei.onsei--tabline .onsei-tab {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100px;
  padding: 10px 16px;
  font-size: 28px;
  font-weight: 800;
  color: var(--ink);
  background: #d9d9d9;
  border: 2px solid var(--line);
  border-bottom-color: var(--line);
  border-radius: var(--radius) var(--radius) 0 0;
  transition: background 0.15s, border-color 0.15s;
}
.onsei.onsei--tabline .onsei-tab:hover,
.onsei.onsei--tabline .onsei-tab:focus-visible {
  background: #d2d2d2;
  border-color: #c7cfda;
  outline: none;
}
.onsei.onsei--tabline .onsei-tab.is-active,
.onsei.onsei--tabline .onsei-tab[aria-selected="true"] {
  background: #fff;
  color: var(--ink);
  border-color: var(--line);
  border-bottom-color: transparent;
}
.onsei.onsei--tabline .onsei-tab.is-active::after,
.onsei.onsei--tabline .onsei-tab[aria-selected="true"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: #fff;
  z-index: 4;
}
.onsei.onsei--tabline .onsei-tabpanels {
  position: relative;
}
.onsei.onsei--tabline .onsei-tabpanel {
  position: relative;
  z-index: 2;
  background: #fff;
  border: 2px solid var(--line);
  border-top: 0;
  border-radius: 0 0 var(--radius) var(--radius);
  padding: 52px 20px 0;
  margin-top: -2px;
  margin-bottom: 100px;
}
.onsei.onsei--tabline .onsei-tabpanel[hidden] {
  display: none;
}

/* ============================================================
   一覧レイアウト（ブロック/カード）
   ============================================================ */
.onsei-block {
  background: #f1f8ff;
  border-radius: var(--radius);
  padding: 30px;
  margin-bottom: 50px;
}
.onsei-outer-title {
  position: relative;
  font-size: 28px;
  font-weight: 700;
  line-height: 1.3;
  padding: 0 0 30px;
  margin-bottom: 0;
}
.onsei-outer-title::after {
  content: "";
  position: absolute;
  left: -30px;
  right: -30px;
  bottom: 0;
  height: 2px;
  background: #d9d9d9;
}
.onsei-group__title {
  position: relative;
  margin: 0 0 14px;
  padding: 6px 0 8px 14px;
  font-size: 20px;
  line-height: 1.35;
  color: var(--ink);
}
.onsei-group__title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--brand);
  border-radius: 4px;
}
.onsei-index__container .kp-lead-heading {
  margin: 30px 0 20px;
}
.onsei.onsei--tabline .onsei-group {
  background: transparent;
  border: 0;
}

.onsei-items {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 50px 30px;
}

.onsei-download__container {
  margin-bottom: 100px;
}

@media (max-width: 879px) {
  .onsei-items {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .onsei-index__container .kp-lead-heading {
    margin: 0;
  }
  .onsei-index__container .onsei-card h3 {
    font-size: 14px;
    margin: 12px 0 14px;
  }
  .onsei.onsei--tabline .onsei-tabpanel {
    padding: 34px 16px 0;
    margin-bottom: 40px;
  }
  .onsei-block {
    padding: 12px 12px 0;
    margin-bottom: 32px;
  }
  .onsei-outer-title {
    padding: 0 0 12px;
  }
  .onsei-outer-title::after {
    left: -12px;
    right: -12px;
  }
}
.onsei-card {
  display: block;
}

/* 一覧の大きいカード */
.onsei-item {
  display: grid;
  grid-template-columns: minmax(240px, 50%) 1fr;
  gap: 15px;
  background: transparent;
  border: 0;
  min-height: 260px;
  align-items: start;
}
@media (max-width: 879px) {
  .onsei-item {
    grid-template-columns: 1fr;
    gap: 0;
  }
}

.onsei-item__covers {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(5, 1fr);
  background: transparent;
  border-right: none;
  align-self: start;
}
@media (max-width: 879px) {
  .onsei-item__covers {
    padding: 0;
    gap: 5px;
  }
}

.onsei-item__cover--main {
  grid-column: 1 / -1;
}

/* === 追加パッチ統合：メイン書影は “非トリミング・中央” を常時適用（サムネ除外） === */
.onsei-item__cover--main img {
  width: 100%;
  height: 100%;
  display: block;
  background: #f6f7f9;
  border: 1px solid #d9d9d9;
  object-fit: contain;
  object-position: center;
  aspect-ratio: 3/4;
}

/* サムネイル */
.onsei-item__thumbs {
  grid-column: 1 / -1;
  background: #fff;
  border: 1px solid #d9d9d9;
  border-radius: 2px;
  padding: 6px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
  height: auto;
}
.onsei-thumb {
  flex: 0 0 auto;
  height: 60px;
  cursor: pointer;
}
.onsei-thumb img {
  height: 100%;
  width: auto;
  object-fit: contain;
  display: block;
  background: #d9d9d9;
  border: 1px solid #d9d9d9;
  border-radius: 4px;
  filter: brightness(0.85);
  transition: filter 0.2s, border-color 0.2s;
}
.onsei-thumb.is-active img {
  filter: none;
  border-color: var(--brand);
}

/* 本文側 */
.onsei-item__body {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.onsei-item__title {
  display: none !important;
}

/* 帯リンク */
.onsei-links__section {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
}
.onsei-section {
  display: block;
  padding: 10px;
  min-height: 43px;
  background: #0072ba;
  color: #fff;
  border: 1px solid #0072ba;
  border-radius: 5px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1;
}
.onsei-section.onsei-section--link {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: flex-start;
  white-space: nowrap;
  text-decoration: none;
}
.onsei-section__label {
  overflow: hidden;
  text-overflow: ellipsis;
}
.onsei-section__icon {
  margin-left: auto;
  width: 24px;
  height: auto;
  display: block;
}

/* リストリンク */
.onsei-links {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 0;
  padding: 0;
}
.onsei-links__item {
  padding: 16px 10px;
  border-bottom: 1px solid #0072ba;
}
.onsei-link {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}
.onsei-link__title {
  font-size: 16px;
  font-weight: 700;
  padding-left: 15px;
  color: var(--brand);
}
.onsei-link__icon {
  width: 24px;
  height: auto;
  display: block;
}
.onsei-link__desc {
  font-size: 14px;
  padding: 15px 0 0 15px;
}

.onsei-link__desc p {
  margin-bottom: 15px;
}

.onsei-link__desc p:last-child {
  margin-bottom: 0;
}

.onsei-link__desc span {
  color: #0072ba;
  font-weight: 500;
}

/* Utility */
.onsei-items__empty,
.onsei-links__empty,
.onsei-groups__empty {
  color: #9ca3af;
  padding: 6px 2px;
}

/* アクセシビリティ */
.onsei a:focus-visible,
.onsei button:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 114, 186, 0.25);
  border-radius: 8px;
}

/* 印刷 */
@media print {
  .onsei-tabs {
    display: none !important;
  }
  .onsei-group {
    break-inside: avoid;
  }
}

/* ============================================================
   ▼ onsei-dl（詳細）
   ============================================================ */
.onsei.onsei--detail .onsei-head {
  text-align: center;
  margin: 22px 0 16px;
}
.onsei.onsei--detail .onsei-head .info-title {
  font-size: 28px;
  font-weight: 800;
  margin: 0;
}

.onsei-dl-block {
  background: transparent !important;
  margin: 0 0 100px;
}
@media (max-width: 879px) {
  .onsei-dl-block {
    padding-left: 0;
    padding-right: 0;
    max-width: none;
  }
  .onsei-thumb {
    height: 48px;
  }
  .onsei-item__thumbs {
    gap: 4px;
    padding: 4px;
  }
  .onsei-section {
    padding: 8px;
  }
  .onsei-link__title {
    font-size: 14px;
    padding-left: 14px;
  }
  .onsei-links__item {
    padding: 10px 8px 10px 0;
  }
  .onsei-link__icon {
    width: 20px;
  }
  .onsei-links__section {
    margin: 0 0 14px;
  }
  .onsei-section__icon {
    width: 20px;
  }

  .onsei-link__desc {
    font-size: 12px;
    padding: 0 0 0 14px;
  }

  .onsei-link__desc p {
    margin-bottom: 14px;
  }
}

.onsei-dl-grid {
  display: grid;
  grid-template-columns: repeat(3, 425px);
  column-gap: 56px;
  row-gap: 16px;
  justify-content: start;
  align-items: start;
}
@media (max-width: 879px) {
  .onsei-dl-grid {
    grid-template-columns: 1fr;
    justify-content: center;
    justify-items: center;
  }
}

.onsei-dl-card {
  border: 0;
  background: transparent;
}
.onsei-dl-card__box {
  --dl-bottom-gap: 20px;
  width: 425px;
  height: 154px;
  box-sizing: border-box;
  padding: 12px 16px 0;
  display: flex;
  flex-direction: column;
  text-align: left;
  font-size: 20px;
  border-bottom: 1px solid #0072ba;
  position: relative;
}
@media (max-width: 599px) {
  .onsei-dl-card__box {
    width: 100%;
    max-width: 425px;
  }
}
.onsei-dl-title {
  flex: 0 0 auto;
  height: calc(1.5em * 2);
  line-height: 1.5;
  font-weight: 400;
  margin: 0;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}
.onsei-dl-link {
  margin-top: 30px;
  margin-bottom: var(--dl-bottom-gap);
  align-self: stretch;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  text-decoration: none;
  color: inherit;
  transition: opacity 0.3s ease;
}

.onsei-dl-link--disabled {
  pointer-events: none;
  opacity: 0.6;
}
.onsei-dl-filename {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: #0072ba;
  font-weight: 700;
  line-height: 1.4;
}
.onsei-dl-size {
  margin-left: 0.5em;
  color: inherit;
  font-weight: normal;
}
.onsei-dl-icon {
  width: 24px;
  height: auto;
  justify-self: end;
}

.onsei-dl-notes {
  margin: 12px auto 16px;
  padding: 16px 18px;
  border-radius: 6px;
  background: #fff;
  border: 1px solid #dde8f5;
  max-width: 930px;
}

/* 戻るボタン */
.onsei .kbpdf-back {
  text-align: center;
  margin-top: 28px;
}
.onsei .kbpdf-back .kbpdf-cta__btn {
  display: inline-block;
  width: 376px;
  height: 60px;
  line-height: 60px;
  background: #0072ba;
  color: #fff;
  font-size: 24px;
  font-weight: bold;
  border-radius: 9999px;
  text-decoration: none;
  margin: 20px 0;
  transition: width 0.3s ease;
}
@media (hover: hover) and (pointer: fine) {
  .onsei .kbpdf-back .kbpdf-cta__btn:hover {
    width: 416px;
  }
}
@media (max-width: 879px) {
  .onsei .kbpdf-back .kbpdf-cta__btn {
    width: 300px;
    min-width: 300px;
    height: 48px;
    line-height: 48px;
    font-size: 18px;
    transition: width 0.3s ease !important;
  }
}
@media (max-width: 879px) and (hover: hover) {
  .onsei .kbpdf-back .kbpdf-cta__btn:hover {
    width: 340px;
  }
}

/* SP：左右余白を k-books と同じに */
@media (max-width: 879px) {
  main.onsei.onsei--detail > .container {
    padding-left: 0 !important;
    padding-right: 0 !important;
  }
  .onsei.onsei--detail .onsei-dl-grid {
    grid-template-columns: 1fr;
  }
  .onsei.onsei--detail .onsei-dl-card__box {
    width: 100%;
    max-width: 425px;
  }
}

/* DLカード中身は常に100%幅 */
.onsei .onsei-dl-card {
  width: 100%;
}
.onsei .onsei-dl-card__box {
  width: 100%;
  max-width: 425px;
}

/* notes：930px中央寄せ＋左右20px（SPは margin を調整） */
.onsei .onsei-dl-notes {
  max-width: 930px;
  margin: 0 auto 50px;
  padding: 20px;
  box-sizing: border-box;
}
@media (max-width: 879px) {
  .onsei.onsei--detail .onsei-dl-notes {
    margin: 12px 0 16px;
  }
}

/* =========================================================
   kbpdfページ除外（スコープ強化）
   ========================================================= */
.onsei:not(.kbpdf).onsei--tabline .onsei-tab {
  min-height: 100px;
  padding: 10px 16px;
  font-size: 28px;
  font-weight: 800;
}
.onsei:not(.kbpdf).onsei--detail .onsei-head .info-eyebrow {
  font-size: 18px;
}
.onsei:not(.kbpdf).onsei--detail .onsei-head .info-title {
  font-size: 28px;
  font-weight: 800;
}

/* ============================================================
   SP調整（≤879px）
   ============================================================ */
@media (max-width: 879px) {
  /* 詳細ヘッダ */
  .onsei.onsei--detail .onsei-head .info-eyebrow {
    font-weight: 400;
    color: #0072ba;
    font-size: 12px;
  }
  .onsei.onsei--detail .onsei-head .info-title {
    font-weight: 500;
    font-size: 22px;
  }

  /* リード見出し/注意ボックス */
  .onsei-lead-heading {
    font-weight: 700;
    font-size: 16px;
  }
  h3.onsei-note__title {
    font-weight: 700;
    font-size: 14px;
    padding: 16px;
  }
  .onsei-note__body {
    font-size: 12px;
    padding: 0 16px 16px;
  }

  /* タブ（切替） */
  .onsei.onsei--tabline .onsei-tab {
    min-height: 48px;
    padding: 8px 12px;
    font-weight: 700;
    font-size: 16px;
    cursor: pointer;
  }
  .onsei .onsei-tabs[role="tablist"] {
    min-height: 48px;
  }

  /* 外側タイトル/本文パディング */
  .onsei-outer-title {
    font-weight: 700;
    font-size: 16px;
  }
  .onsei-item__body {
    padding: 14px 0 0;
  }

  /* 帯リンクラベル */
  .onsei-section__label {
    font-size: 14px;
  }

  /* タップ時の視覚効果を無効化 */
  .onsei a,
  .onsei button,
  .onsei .onsei-dl-link {
    transition: none !important;
  }
  .onsei a:hover,
  .onsei button:hover,
  .onsei .onsei-dl-link:hover {
    opacity: 1 !important;
    filter: none !important;
    transform: none !important;
  }
  .onsei a:active,
  .onsei button:active,
  .onsei .onsei-dl-link:active {
    transform: none !important;
  }

  /* グループ見出し */
  h3.onsei-group__title {
    font-weight: 700;
    font-size: 16px;
  }

  /* カバー領域（中央寄せ/幅調整） */
  .onsei-item__covers {
    width: 60%;
    min-width: 200px;
    margin-left: auto;
    margin-right: auto;
  }
}

/* ============================================================
   SP（≤879px）— 最優先上書き（一覧の見出しサイズ/タブ高さ固定 等）
   ============================================================ */
@media (max-width: 879px) {
  .onsei.onsei--tabline .onsei-tabs a.onsei-tab[role="tab"] {
    height: 48px !important;
    min-height: 48px !important;
    padding: 0 12px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-weight: 700 !important;
    font-size: 16px !important;
    line-height: 1.2 !important;
    white-space: nowrap;
    cursor: pointer;
  }

  /* サブタイトル/リンク間隔/カード文字/イントロ余白 */
  .kbpdf-page-subtitle {
    font-size: 18px;
    margin: 48px 36px 0;
  }
  html body .onsei.onsei--detail .onsei-dl-link {
    margin: 10px 0 !important;
  }
  html body .onsei.onsei--detail .onsei-dl-card__box {
    font-size: 12px !important;
    height: auto !important;
    min-height: 0;
  }
  .onsei-intro {
    margin-bottom: 40px;
  }

  .onsei-article__content h2,
  .onsei-article__content h3 {
    font-size: 14px;
    margin: 16px 0;
  }

  .onsei-article__content .onsei-dl-block h2,
  .onsei-article__content .onsei-dl-block h3 {
    margin: 0;
  }

  .onsei-article__content p {
    font-size: 14px;
  }
  .onsei-article__content ul {
    font-size: 12px;
  }
  .onsei-download__container .page-header {
    margin: 48px 0 40px;
  }
  .onsei-dl-card__box {
    font-size: 12px;
  }
  .onsei-dl-card__box {
    padding: 0 12px;
    height: auto;
  }

  .onsei-dl-block {
    background: transparent !important;
    margin: 0 0 40px;
  }
  .onsei-dl-title {
    height: auto;
  }
  .onsei-dl-icon {
    width: 20px;
    flex: 0 0 auto;
  }

  .onsei-dl-link {
    display: inline-flex;
    align-items: center;
    gap: 20px;
    width: auto;
    margin: 10px 0;
    align-self: flex-start;
  }
  .onsei-dl-filename {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .onsei-dl-notes {
    margin: 0 auto 40px;
    padding: 0 16px 16px;
  }
  .onsei-dl-notes h2,
  .onsei-dl-notes h3 {
    font-size: 14px;
    margin: 0 0 16px;
  }
  .onsei-dl-notes p {
    font-size: 12px;
  }
  .onsei-dl-notes ul {
    font-size: 12px;
  }
  .onsei-dl-notes p:last-child {
    margin-bottom: 0;
  }
  .kbpdf-back {
    margin-top: 0;
  }
  .onsei-download__container {
    margin-bottom: 40px;
  }
}