/* ============================================================
   KNOWLEDGE Page — M&Aナレッジ
   Hero は共通 .page-hero を使用（main.css）
   ============================================================ */

/* ============================================================
   共通
   ============================================================ */
.kn-inner {
  max-width: 980px;
  margin: 0 auto;
}

.kn-section {
  padding: 80px var(--gutter-width);
}

.kn-section__header {
  margin-bottom: 30px;
}

.kn-section__label {
  display: inline-block;
  font-family: var(--font-en);
  font-weight: var(--font-weight-demi);
  font-size: 36px;
  line-height: 58px;
  letter-spacing: 0.16em;
  color: #145393;
}

/* ============================================================
   M&Aとは
   ============================================================ */
.kn-section.kn-about {
  padding: 80px var(--gutter-width) 60px;
}

.kn-about__body {
  line-height: 28px;
  letter-spacing: 0.12em;
}

.kn-about__body p {
  margin: 0 0 16px;
}

/* 2タイプのカード */
.kn-about__types {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  margin-top: 40px;
}

.kn-type-card {
  background: #fff;
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  overflow: hidden;
}

.kn-type-card__header {
  background: linear-gradient(93.12deg, #145393 0%, #3c75ac 75%);
  padding: 22px 24px;
  text-align: center;
}

.kn-type-card__header.growth {
  background: linear-gradient(315deg, #1d4055 15.14%, #2a5c7a 84.58%);
  mix-blend-mode: multiply;
  border-radius: 3px;
}

.kn-type-card__title {
  font-family: var(--font-ja);
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.12em;
  line-height: 1.4;
  margin: 0;
}

.kn-type-card__body {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 30px;
}

.kn-type-card__icon {
  flex-shrink: 0;
  width: 150px;
  height: 150px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.kn-type-card__icon img {
  width: 100%;
  object-fit: contain;
}

.kn-type-card__text {
  flex: 1;
  font-size: 15px;
  line-height: 26px;
  letter-spacing: 0.12em;
}

/* ============================================================
   M&Aと事業承継との違い
   ============================================================ */
.kn-diff {
  padding-top: 0;
}

.kn-diff__title {
  font-family: var(--font-ja);
  font-size: 24px;
  font-weight: 700;
  line-height: 40px;
  letter-spacing: 0.16em;
  margin-bottom: 20px;
}

.kn-diff__content {
  display: flex;
  align-items: center;
  gap: 40px;
}

.kn-diff__icon {
  flex-shrink: 0;
  width: 200px;
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.kn-diff__icon img {
  width: 100%;
  object-fit: contain;
}

.kn-diff__body {
  flex: 1;
  line-height: 28px;
}

.kn-diff__body p:last-child {
  margin-bottom: 0;
}

/* ============================================================
   M&Aの市場規模
   ============================================================ */
.kn-market__body {
  line-height: 28px;
  letter-spacing: 0.12em;
  margin-bottom: 40px;
}

.kn-market__body p {
  margin: 0 0 16px;
}

.kn-market__body p:last-child {
  margin-bottom: 0;
}

/* チャート（画像） */
.kn-chart {
  margin: 0;
}

.kn-chart img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
}

/* ============================================================
   M&Aが増えている背景
   ============================================================ */
.kn-background {
  padding-top: 40px;
}

.kn-background__title {
  font-family: var(--font-ja);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-bottom: 49px;
}

.kn-background__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 60px;
}

.kn-bg-item {
  display: flex;
  align-items: flex-start;
  gap: 30px;
}

.kn-bg-item__icon {
  flex-shrink: 0;
  width: 130px;
  height: 130px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.kn-bg-item__icon img {
  width: 100%;
  object-fit: contain;
}

.kn-bg-item__body {
  flex: 1;
  min-width: 0;
}

.kn-bg-item__title {
  font-family: var(--font-ja);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.16em;
  line-height: 32px;
  margin-bottom: 10px;
}

.kn-bg-item__text {
  line-height: 28px;
  letter-spacing: 0.12em;
  text-wrap-style: auto;
}

/* ============================================================
   M&Aを活用するメリット
   ============================================================ */
.kn-merit__group {
  margin-bottom: 0;
}

.kn-merit__group-title {
  font-family: var(--font-ja);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-bottom: 30px;
}

.kn-merit__cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.kn-merit__card {
  background: #fff;
  padding: 20px;
  box-shadow: 0px 2px 3px rgba(0, 0, 0, 0.08);
}

.kn-merit__card-title {
  font-family: var(--font-ja);
  font-size: 19px;
  font-weight: 700;
  color: #145393;
  letter-spacing: 0.12em;
  line-height: 32px;
  margin-bottom: 10px;
}

.kn-merit__card-text {
  font-size: 14px;
  line-height: 22px;
  letter-spacing: 0.12em;
}

@media (max-width: 1024px) {
  .kn-merit__cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ============================================================
   M&A支援機関
   ============================================================ */
.kn-support {
  background: #6a818f;
}

/* セクション見出し（ボックス外） */
.kn-support__header {
  text-align: center;
  margin-bottom: 30px;
  color: #fff;
}

.kn-support__title {
  font-family: var(--font-en);
  font-size: 32px;
  font-weight: var(--font-weight-demi);
  letter-spacing: 0.16em;
  margin-bottom: 20px;
}

.kn-support__lead {
  font-family: var(--font-ja);
  font-weight: 500;
  line-height: 28px;
  letter-spacing: 0.12em;
  margin: 0;
}

/* 白いボックス */
.kn-support__box {
  background: #fff;
  padding: 60px 78px;
  border-radius: 4px;
  max-width: 1000px;
  margin: 0 auto;
}

.kn-support__logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  margin-bottom: 30px;
}

.kn-support__logo {
  /* height: 64px;
  width: auto; */
}

.kn-support__text {
  font-family: var(--font-ja);
  line-height: 28px;
  letter-spacing: 0.12em;
  margin-bottom: 30px;
}

/* チェックリスト（薄グレー背景） */
.kn-support__list {
  list-style: none;
  background: #f2f2f2;
  padding: 30px 80px;
  margin: 0 auto 30px;
  max-width: 588px;
}

.kn-support__list li {
  font-family: var(--font-ja);
  line-height: 28px;
  letter-spacing: 0.12em;
  position: relative;
  padding-left: 18px;
}

.kn-support__list li::before {
  content: '・';
  position: absolute;
  left: 0;
  top: 0;
}

.kn-support__closing {
  font-family: var(--font-ja);
  line-height: 28px;
  letter-spacing: 0.12em;
  text-align: center;
}

/* ============================================================
   M&Aの手法
   ============================================================ */
.kn-method__intro {
  line-height: 28px;
  letter-spacing: 0.12em;
  margin-bottom: 30px;
}

.kn-method__intro p {
  margin: 0;
}

.kn-method__chart {
  margin-bottom: 30px;
}

.kn-method__chart img {
  display: block;
  width: 100%;
  height: auto;
}

.kn-method__block {
  margin-top: 80px;
}

.kn-method__block:last-child {
  margin-bottom: 0;
}

.kn-method__heading {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-bottom: 30px;
}

.kn-method__number {
  font-family: var(--font-ja);
  font-size: 40px;
  font-weight: var(--font-weight-demi);
  color: #145393;
  letter-spacing: 0.08em;
  line-height: 1;
  flex-shrink: 0;
}

.kn-method__title {
  font-family: var(--font-ja);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.16em;
  line-height: 48px;
  color: #145393;
}

.kn-method__desc {
  line-height: 28px;
  letter-spacing: 0.12em;
  margin: 0 0 32px;
}

.kn-method__image {
  margin-bottom: 30px;
}

.kn-method__image img {
  display: block;
  width: 100%;
  height: auto;
}

/* 特徴・メリット・注意点 */
.kn-method__points {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.kn-method__points-title {
  font-family: var(--font-ja);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-bottom: 10px;
  position: relative;
  padding-left: 28px;
}

.kn-method__points-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #6e94bc;
}

.kn-method__points-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.kn-method__points-list li {
  font-family: var(--font-ja);
  line-height: 28px;
  font-weight: 500;
  letter-spacing: 0.11em;
  position: relative;
  padding-left: 18px;
}

.kn-method__points-list li::before {
  content: '・';
  position: absolute;
  left: 0;
  top: 0;
}

/* ============================================================
   Q&A（アコーディオン）
   ============================================================ */
.kn-faq__header {
  text-align: center;
  margin-bottom: 40px;
}

.kn-faq__label {
  font-family: var(--font-en);
  font-weight: var(--font-weight-demi);
  font-size: 80px;
  color: #145393;
  letter-spacing: 0.16em;
}

.kn-faq__title {
  font-family: var(--font-ja);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.kn-faq__list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.kn-faq__item {
  background: #fff;
  border-radius: 4px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
  overflow: hidden;
}

.kn-faq__question {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 30px;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-ja);
  gap: 24px;
}

.kn-faq__q-icon {
  font-family: var(--font-en);
  font-size: 30px;
  font-weight: var(--font-weight-demi);
  color: #145393;
  letter-spacing: 0.08em;
  line-height: 34px;
  flex-shrink: 0;
}

.kn-faq__q-text {
  flex: 1;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 26px;
}

.kn-faq__toggle {
  position: relative;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.kn-faq__toggle::before,
.kn-faq__toggle::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  background: #333;
  transition: transform 0.3s;
}

.kn-faq__toggle::before {
  width: 16px;
  height: 1.5px;
  transform: translate(-50%, -50%);
}

.kn-faq__toggle::after {
  width: 1.5px;
  height: 16px;
  transform: translate(-50%, -50%);
}

.kn-faq__item.is-open .kn-faq__toggle::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.kn-faq__answer {
  display: none;
  padding: 0 80px 28px 80px;
  margin-top: -20px;
}

.kn-faq__item.is-open .kn-faq__answer {
  display: block;
}

.kn-faq__answer p {
  font-family: var(--font-ja);
  font-size: 14px;
  line-height: 1.9;
  letter-spacing: 0.08em;
  color: #555;
  margin: 0;
}

/* ============================================================
   CTA
   ============================================================ */
.kn-cta {
  background: linear-gradient(135deg, #1a3a5c 0%, #2a6496 100%);
  padding: 80px 0;
}

.kn-cta__content {
  text-align: center;
  color: #fff;
}

.kn-cta__label {
  display: block;
  font-family: var(--font-en);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: 0.12em;
  opacity: 0.8;
  margin-bottom: 8px;
}

.kn-cta__title {
  font-family: var(--font-ja);
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 24px;
}

.kn-cta__tel-label {
  font-size: 14px;
  margin-bottom: 4px;
  opacity: 0.8;
}

.kn-cta__tel {
  display: block;
  font-family: var(--font-en);
  font-weight: 600;
  font-size: 42px;
  color: #fff;
  text-decoration: none;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.kn-cta__note {
  font-size: 13px;
  opacity: 0.7;
  margin-bottom: 32px;
}

/* ============================================================
   M&A関連コンテンツ・サービス
   ============================================================ */
.kn-related {
  padding: 64px 0 80px;
}

.kn-related__header {
  text-align: center;
  margin-bottom: 32px;
}

.kn-related__title {
  font-family: var(--font-ja);
  font-size: 20px;
  font-weight: 700;
  color: #222;
}

.kn-related__title::after {
  content: '';
  display: block;
  width: 80px;
  height: 2px;
  background: #222;
  margin: 16px auto 0;
}

.kn-related__cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 800px;
  margin: 0 auto;
}

.kn-related__card {
  display: block;
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  text-decoration: none;
}

.kn-related__card-thumb {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.kn-related__card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s;
}

.kn-related__card:hover .kn-related__card-thumb img {
  transform: scale(1.05);
}

.kn-related__card-title {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #fff;
  font-family: var(--font-ja);
  font-weight: 700;
  font-size: 16px;
  text-align: center;
  white-space: nowrap;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
  z-index: 1;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 768px) {
  /* 共通 */
  .kn-section.kn-about {
    padding: 60px var(--gutter-width);
  }

  .kn-section__header {
    margin-bottom: 20px;
  }

  .kn-section__label {
    font-size: 24px;
    line-height: 34px;
    letter-spacing: 0.12em;
  }

  .kn-about__body {
    font-size: 15px;
    line-height: 26px;
  }

  /* M&Aとは — 2タイプカード */
  .kn-about__types {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 32px;
  }

  .kn-type-card__header {
    padding: 16px 20px;
  }

  .kn-type-card__title {
    font-size: 17px;
  }

  .kn-type-card__body {
    flex-direction: column;
    align-items: center;
    gap: 16px;
    padding: 24px 20px;
    text-align: center;
  }

  .kn-type-card__text {
    text-align: left;
  }

  /* M&Aと事業承継との違い */
  .kn-diff {
    padding: 0 var(--gutter-width);
  }

  .kn-diff__title {
    font-size: 18px;
  }

  .kn-diff__content {
    flex-direction: column;
    align-items: center;
    gap: 20px;
  }

  .kn-diff__body {
    font-size: 15px;
    line-height: 26px;
  }

  /* M&Aが増えている背景 */
  .kn-background {
    padding-top: 24px;
  }

  .kn-background__title {
    font-size: 18px;
    line-height: 1.5;
    margin-bottom: 28px;
  }

  .kn-background__grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .kn-bg-item {
    gap: 16px;
  }

  .kn-bg-item__icon {
    width: 80px;
    height: 80px;
  }

  .kn-bg-item__title {
    font-size: 15px;
    margin-bottom: 8px;
  }

  .kn-bg-item__text {
    font-size: 13px;
  }

  .kn-merit__group-title {
    font-size: 16px;
    margin-bottom: 16px;
  }

  .kn-merit__cards {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .kn-merit__card {
    padding: 22px 20px;
  }

  .kn-merit__card-title {
    font-size: 15px;
    margin-bottom: 10px;
  }

  .kn-merit__card-text {
    font-size: 13px;
  }

  /* M&A支援機関 */
  .kn-support__header {
    margin-bottom: 28px;
  }

  .kn-support__title {
    font-size: 19px;
    letter-spacing: 0.08em;
  }

  .kn-support__lead {
    font-size: 13px;
    text-align: left;
  }

  .kn-support__lead br {
    display: none;
  }

  .kn-support__box {
    padding: 32px 20px 28px;
  }

  .kn-support__logos {
    flex-direction: column;
    gap: 20px;
    margin-bottom: 28px;
  }

  .kn-support__logo {
    /* height: 48px; */
    width: 60%;
  }

  .kn-support__text {
    font-size: 13px;
    margin-bottom: 20px;
  }

  .kn-support__list {
    padding: 20px 24px;
    margin-bottom: 20px;
  }

  .kn-support__list li {
    font-size: 13px;
  }

  .kn-support__closing {
    font-size: 13px;
    text-align: left;
  }

  .kn-support__closing br {
    display: none;
  }

  /* M&Aの手法 */
  .kn-method__intro {
    margin-bottom: 28px;
    line-height: 1.9;
  }

  .kn-method__chart {
    margin-bottom: 28px;
  }

  .kn-method__block {
    margin-top: 48px;
  }

  .kn-method__heading {
    gap: 14px;
    margin-bottom: 12px;
  }

  .kn-method__number {
    font-size: 26px;
  }

  .kn-method__title {
    font-size: 17px;
    line-height: 1.5;
  }

  .kn-method__desc {
    line-height: 1.9;
    margin-bottom: 24px;
  }

  .kn-method__image {
    margin-bottom: 28px;
  }

  .kn-method__points {
    gap: 22px;
  }

  .kn-method__points-title {
    font-size: 16px;
    padding-left: 20px;
  }

  .kn-method__points-title::before {
    width: 12px;
    height: 12px;
  }

  .kn-method__points-list li {
    font-size: 13px;
    line-height: 1.8;
  }

  /* FAQ */
  .kn-faq__header {
    margin-bottom: 28px;
  }

  .kn-faq__label {
    font-size: 36px;
  }

  .kn-faq__title {
    font-size: 14px;
  }

  .kn-faq__question {
    padding: 20px 20px;
    gap: 14px;
  }

  .kn-faq__q-icon {
    font-size: 20px;
  }

  .kn-faq__q-text {
    font-size: 14px;
  }

  .kn-faq__answer {
    padding: 0 20px 22px 54px;
  }

  .kn-faq__answer p {
    font-size: 13px;
  }

  /* CTA */
  .kn-cta {
    padding: 48px 0;
  }

  .kn-cta__title {
    font-size: 22px;
  }

  .kn-cta__tel {
    font-size: 30px;
  }

  /* 関連 */
  .kn-related__cards {
    grid-template-columns: 1fr;
  }
}