/*
|---------------------------------------------------------------
| qinc2026-btob-overview.css - BtoB EC・DX支援 サービス概要
|---------------------------------------------------------------
*/

/* ==========================================================================
   Section: BtoB Overview
   ========================================================================== */
.btob-overview {
  padding: 120px 0;
}

.btob-overview__inner {
  max-width: 1174px;
  margin: 0 auto;
  padding: 0 var(--container-padding-x);
  text-align: center;
}

/* Label */
.btob-overview__label {
  display: block;
  font-family: var(--font-family-en, "Montserrat", sans-serif);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-gold, #c5a059);
  letter-spacing: 1.4px;
  text-transform: uppercase;
}

/* Title */
.btob-overview__title {
  margin: 16px 0 0;
  /* 48px @1920 → 28px @768 */
  font-size: clamp(28px, calc(14.63px + 1.74vw), 48px);
  font-weight: 900;
  color: var(--color-blue01, #020441);
  line-height: 1.2;
  font-feature-settings: "palt" 1;
}

/* Description */
.btob-overview__desc {
  margin: 40px auto 0;
  max-width: 1059px;
  font-size: 16px;
  font-weight: 400;
  color: var(--color-blue01, #020441);
  line-height: 1.83;
}

/* ==========================================================================
   Nav Cards
   ========================================================================== */
.btob-overview__nav {
  display: flex;
  justify-content: center;
  gap: 30px;
  max-width: calc(960px + var(--container-padding-x) * 2);
  margin: 54px auto 0;
  padding: 0 var(--container-padding-x);
}

.btob-overview__nav-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 300px;
  height: 150px;
  border: 1px solid var(--color-blue01, #020441);
  border-radius: 12px;
  background: #fff;
  text-decoration: none;
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

.btob-overview__nav-card:hover {
  background-color: #f1f5f9;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.btob-overview__nav-num {
  font-family: "Oswald", sans-serif;
  font-size: 18px;
  font-weight: 600;
  color: var(--color-blue01, #020441);
  letter-spacing: 0.9px;
  font-feature-settings: "palt" 1;
}

.btob-overview__nav-name {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-blue01, #020441);
  letter-spacing: 1.1px;
  font-feature-settings: "palt" 1;
}

.btob-overview__nav-arrow {
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.btob-overview__nav-card:hover .btob-overview__nav-arrow {
  transform: translateY(3px);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1024px) {
  .btob-overview {
    padding: 80px 0;
  }
}

@media (max-width: 768px) {
  .btob-overview {
    padding: 64px 0;
  }

  .btob-overview__desc br {
    display: none;
  }

  .btob-overview__nav {
    flex-direction: column;
    align-items: center;
    gap: 16px;
    margin-top: 40px;
  }

  .btob-overview__nav-card {
    width: 100%;
    max-width: 300px;
    height: 120px;
  }

  .btob-overview__nav-name {
    font-size: 18px;
  }
}