/*
|---------------------------------------------------------------
| qinc2026-kachinote-method.css - カチノテ DMAICメソッドセクション
|---------------------------------------------------------------
*/

/* ==========================================================================
   Section: Kachinote Method
   ========================================================================== */
.kachinote-method {
  position: relative;
  background-color: var(--color-blue01, #020441);
  padding: 120px 0;
  overflow: hidden;
}

/* Background Video
   ========================================================================== */
.kachinote-method__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.kachinote-method__bg-video {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  height: 100%;
  min-width: 100%;
  min-height: 100%;
  object-fit: cover;
}

.kachinote-method__bg-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(2, 4, 65, 0.75);
}

.kachinote-method__inner {
  position: relative;
  z-index: 1;
  max-width: 1280px;
}

/* Header
   ========================================================================== */
.kachinote-method__header {
  text-align: center;
  margin-bottom: 80px;
}

.kachinote-method__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: 1.2px;
  margin-bottom: 24px;
}

.kachinote-method__title {
  font-size: 48px;
  font-weight: 900;
  color: #fff;
  margin: 0;
  line-height: 1.2;
}

.kachinote-method__title-segment {
  display: inline-block;
}

/* Steps Container
   ========================================================================== */
.kachinote-method__steps {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 0;
}

/* Arrow
   ========================================================================== */
.kachinote-method__arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  font-size: 16px;
  font-weight: 350;
  color: rgba(255, 255, 255, 0.5);
}

/* Step Card
   ========================================================================== */
.kachinote-method__step {
  flex: 1;
  max-width: 272px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  padding: 24px;
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.kachinote-method__step:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: var(--color-gold, #c5a059);
}

.kachinote-method__step--highlight {
  background: var(--color-gold, #c5a059);
  border: 1px solid var(--color-gold, #c5a059);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.kachinote-method__step--highlight:hover {
  background: #d4ad64;
  border-color: #d4ad64;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.2), 0 8px 10px -6px rgba(0, 0, 0, 0.15);
}

/* Step Letter
   ========================================================================== */
.kachinote-method__step-letter {
  display: block;
  font-family: var(--font-family-en, "Montserrat", sans-serif);
  font-size: 49px;
  font-weight: 600;
  color: var(--color-gold, #c5a059);
  line-height: 1;
  margin-bottom: 8px;
}

.kachinote-method__step--highlight .kachinote-method__step-letter {
  color: var(--color-blue01, #020441);
}

/* Step Name
   ========================================================================== */
.kachinote-method__step-name {
  display: block;
  font-family: var(--font-family-en, "Montserrat", sans-serif);
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 8px;
}

.kachinote-method__step--highlight .kachinote-method__step-name {
  color: var(--color-blue01, #020441);
}

/* Step Description
   ========================================================================== */
.kachinote-method__step-desc {
  font-size: 14px;
  font-weight: 350;
  color: #fff;
  line-height: 1.43;
  margin: 0;
}

.kachinote-method__step--highlight .kachinote-method__step-desc {
  color: var(--color-blue01, #020441);
  font-weight: 700;
}

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

  .kachinote-method__title {
    font-size: 36px;
  }

  .kachinote-method__step {
    max-width: 220px;
    padding: 20px;
  }

  .kachinote-method__step-letter {
    font-size: 40px;
  }

  .kachinote-method__step-name {
    font-size: 16px;
  }
}

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

  .kachinote-method__header {
    margin-bottom: 40px;
  }

  .kachinote-method__title {
    font-size: 28px;
  }

  .kachinote-method__steps {
    flex-direction: column;
    align-items: center;
    gap: 0;
  }

  .kachinote-method__arrow {
    transform: rotate(90deg);
    padding: 8px 0;
  }

  .kachinote-method__step {
    max-width: 100%;
    width: 100%;
  }
}