/* =========================================================
   Business page（business/index.html）
   ヒーローと「写真と文章の交互ブロック」は work-environment.css を使い、
   ここでは考え方・強み・導入事例・支援の流れを定義
========================================================= */

/* ---------- 共通の見出し（左に見出し、右に説明文） ---------- */
.biz-head {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: end;
  gap: 64px;
}

.biz-head__title {
  margin-top: 24px;
  font-family: var(--font-heading);
  font-size: clamp(30px, 2.8vw, 40px);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.04em;
}

.biz-head__lead {
  font-size: 16px;
  line-height: 2;
  letter-spacing: 0.06em;
  color: var(--color-text-sub);
}

/* ---------- 私たちの考え方 ---------- */
.biz-intro {
  padding-block: 128px;
  background: var(--color-white);
}

.biz-intro__inner {
  display: grid;
  grid-template-columns: 5fr 6fr;
  align-items: end;
  gap: 80px;
}

.biz-intro__text {
  font-size: 16px;
  line-height: 2.1;
  letter-spacing: 0.05em;
  color: var(--color-text-sub);
  word-break: auto-phrase;
}

.biz-intro__text p + p {
  margin-top: 1.2em;
}

/* ---------- エヌイチの強み（濃いネイビーでメリハリ） ---------- */
.biz-strength {
  position: relative;
  overflow: hidden;
  padding-block: 128px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
}

.biz-strength::before {
  content: "";
  position: absolute;
  top: -240px;
  left: -200px;
  width: 620px;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0) 70%);
  pointer-events: none;
}

.biz-strength .container {
  position: relative;
}

.biz-strength .section-label {
  color: var(--color-accent);
}

.biz-strength .biz-head__lead {
  color: rgba(255, 255, 255, 0.8);
}

.biz-strength__list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 64px;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.biz-strength__item {
  padding: 40px 36px 8px 0;
}

.biz-strength__item + .biz-strength__item {
  padding-left: 36px;
  border-left: 1px solid rgba(255, 255, 255, 0.2);
}

.biz-strength__num {
  font-family: var(--font-heading);
  font-size: 44px;
  font-weight: 700;
  line-height: 1;
  color: var(--color-accent);
}

.biz-strength__name {
  margin-top: 20px;
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.04em;
}

.biz-strength__text {
  margin-top: 14px;
  font-size: 15px;
  line-height: 1.95;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.82);
  word-break: auto-phrase;
}

/* ---------- 導入事例 ---------- */
.biz-case {
  padding-block: 128px;
  background: var(--color-white);
}

.biz-case__list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 48px;
  margin-top: 64px;
}

.biz-case__photo {
  margin: 0;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border-radius: 28px;
  background: var(--color-sub);
}

.biz-case__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.biz-case__body {
  padding: 32px 4px 0;
}

.biz-case__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.biz-case__tags li {
  padding: 5px 14px;
  border: 1px solid var(--color-accent);
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-primary);
}

.biz-case__title {
  margin-top: 20px;
  font-family: var(--font-heading);
  font-size: clamp(19px, 1.6vw, 22px);
  font-weight: 700;
  line-height: 1.6;
  letter-spacing: 0.03em;
  word-break: auto-phrase;
}

.biz-case__text {
  margin-top: 14px;
  font-size: 15px;
  line-height: 1.95;
  letter-spacing: 0.04em;
  color: var(--color-text-sub);
  word-break: auto-phrase;
}

/* 成果：数字を大きく */
.biz-case__result {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 4px 14px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--color-accent);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.biz-case__result-label {
  padding: 3px 10px;
  border-radius: 4px;
  background: var(--color-primary);
  font-size: 11px;
  color: var(--color-white);
  letter-spacing: 0.1em;
  align-self: center;
}

.biz-case__result-num {
  font-family: var(--font-heading);
  font-size: 40px;
  line-height: 1;
  color: var(--color-primary);
}

.biz-case__result-num small {
  margin-left: 2px;
  font-size: 18px;
}

.biz-case__note {
  margin-top: 32px;
  font-size: 12px;
  color: var(--color-text-sub);
  text-align: right;
}

/* ---------- 支援の流れ ---------- */
.biz-process {
  padding-block: 128px;
  background: var(--color-bg);
}

.biz-process__list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  margin-top: 64px;
}

.biz-process__step {
  position: relative;
  padding: 32px 28px 36px;
  border-radius: 24px;
  background: var(--color-white);
}

/* ステップ間の矢印 */
.biz-process__step + .biz-process__step::before {
  content: "";
  position: absolute;
  top: 50%;
  left: -19px;
  width: 9px;
  height: 9px;
  border-top: 1.5px solid var(--color-primary);
  border-right: 1.5px solid var(--color-primary);
  transform: translateY(-50%) rotate(45deg);
}

.biz-process__num {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-primary);
}

.biz-process__name {
  margin-top: 12px;
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.04em;
}

.biz-process__text {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.9;
  letter-spacing: 0.04em;
  color: var(--color-text-sub);
  word-break: auto-phrase;
}

/* ---------- CTA ---------- */
.biz-cta {
  padding-top: 120px;
}

/* ---------- Tablet ---------- */
@media (max-width: 960px) {
  .biz-head,
  .biz-intro__inner {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .biz-intro,
  .biz-strength,
  .biz-case,
  .biz-process {
    padding-block: 96px;
  }

  .biz-strength__list {
    grid-template-columns: 1fr;
    margin-top: 48px;
  }

  .biz-strength__item,
  .biz-strength__item + .biz-strength__item {
    padding: 32px 0;
    border-left: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  }

  .biz-case__list {
    grid-template-columns: 1fr;
    gap: 56px;
    margin-top: 48px;
  }

  /* 支援の流れ：縦並び・下向き矢印 */
  .biz-process__list {
    grid-template-columns: 1fr;
    gap: 28px;
    margin-top: 48px;
  }

  .biz-process__step + .biz-process__step::before {
    top: -19px;
    left: 50%;
    transform: translateX(-50%) rotate(135deg);
  }

  .biz-cta {
    padding-top: 96px;
  }
}

/* ---------- SP ---------- */
@media (max-width: 767px) {
  .biz-intro,
  .biz-strength,
  .biz-case,
  .biz-process {
    padding-block: 72px;
  }

  .biz-head__title {
    margin-top: 18px;
    font-size: clamp(24px, 6.6vw, 28px);
  }

  .biz-head__lead,
  .biz-intro__text {
    font-size: 15px;
    letter-spacing: 0.04em;
  }

  .biz-strength__num {
    font-size: 36px;
  }

  .biz-strength__name {
    font-size: 19px;
  }

  .biz-strength__text,
  .biz-case__text {
    font-size: 14px;
  }

  .biz-case__photo {
    border-radius: 20px;
  }

  .biz-case__body {
    padding-top: 24px;
  }

  .biz-case__result-num {
    font-size: 34px;
  }

  .biz-process__step {
    padding: 24px 22px 26px;
    border-radius: 20px;
  }

  .biz-process__name {
    font-size: 18px;
  }

  .biz-cta {
    padding-top: 72px;
  }
}