/* ==========================================================================
   入会のご案内 — vertical step flow (CMP join guide)
   Mobile-first; BEM block .c-join-guide-flow
   Gradient rail matches design (102.25deg); SP 18px / PC 26px bar width.
   ========================================================================== */

:root {
  --join-flow-rail-border: 18px;
  --join-flow-rail-inset-block: var(--space-2xl);
  --join-flow-card-shadow: 0 4px 8px rgba(0, 0, 0, 0.102);
  --join-flow-image-width: 195px;
  --join-flow-image-height: 130px;
  --join-flow-image-width-md: 210px;
  --join-flow-image-height-md: 140px;
  --join-flow-gradient: linear-gradient(
    to left,
    var(--color-primary-dark) 0,
    var(--color-primary-dark) calc(100% - 2px),
    rgba(66, 96, 212, 0.82) 100%
  );
}

.c-join-guide-flow {
  padding-top: var(--space-3xl);
  padding-bottom: calc(var(--space-5xl) + var(--space-sm));
}

.c-join-guide-flow__header {
  margin-bottom: var(--space-2xl);
}

.c-join-guide-flow__layout {
  position: relative;
  margin-inline: auto;
}

/* Vertical connector: centered behind steps (below content in stacking order) */
.c-join-guide-flow__rail {
  position: absolute;
  top: var(--join-flow-rail-inset-block);
  bottom: var(--join-flow-rail-inset-block);
  left: 50%;
  z-index: var(--z-index-base);
  width: var(--join-flow-rail-border);
  pointer-events: none;
  background-image: var(--join-flow-gradient);
  border-radius: calc(var(--join-flow-rail-border) / 2);
  transform: translateX(-50%);
}

.c-join-guide-flow__main {
  position: relative;
  z-index: var(--z-index-raised);
  width: 100%;
}

.c-join-guide-flow__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.c-join-guide-flow__step {
  margin: 0 0 var(--space-xl);
}

.c-join-guide-flow__step:last-child {
  margin-bottom: 0;
}

.c-join-guide-flow__shell {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  width: 100%;
}

.c-join-guide-flow__label {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  box-sizing: border-box;
  width: fit-content;
  max-width: 100%;
  min-height: 40px;
  padding: var(--space-xs) var(--layout-padding-inline-mobile);
  font-family: var(--font-secondary);
  font-weight: var(--font-weight-bold);
  line-height: var(--space-xl);
  color: var(--color-white);
  background-color: var(--color-primary-dark);
  border-top-left-radius: var(--radius-lg);
  border-top-right-radius: var(--radius-lg);
}

.c-join-guide-flow__label-pre {
  font-size: var(--font-size-sm);
}

.c-join-guide-flow__label-num {
  font-size: var(--font-size-lg);
  color: var(--color-white);
}

.c-join-guide-flow__card {
  width: 100%;
  background-color: var(--color-white);
  border-top-right-radius: var(--radius-sm);
  border-bottom-right-radius: var(--radius-sm);
  border-bottom-left-radius: var(--radius-sm);
  border-top-left-radius: 0;
  box-shadow: var(--join-flow-card-shadow);
}

.c-join-guide-flow__card-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
  box-sizing: border-box;
  min-height: 318px;
  padding: var(--space-lg);
}

.c-join-guide-flow__figure {
  flex-shrink: 0;
  margin: 0;
}

.c-join-guide-flow__img {
  display: block;
  width: var(--join-flow-image-width);
  height: var(--join-flow-image-height);
  object-fit: contain;
}

.c-join-guide-flow__content {
  align-self: stretch;
  min-width: 0;
}

.c-join-guide-flow__card-title {
  margin: 0 0 var(--space-md);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  line-height: var(--space-xl);
  color: var(--color-accent);
}

.c-join-guide-flow__text {
  margin: 0;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  line-height: var(--space-lg);
  color: var(--color-text-primary);
  white-space: pre-line;
}

.c-join-guide-flow__text a {
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
  text-decoration: underline;
  text-decoration-style: solid;
  text-underline-offset: 2px;
}

.c-join-guide-flow__text a:hover {
  color: var(--color-primary-medium);
}

.c-join-guide-flow__text a:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus-primary);
  border-radius: calc(var(--radius-sm) / 2);
}

@media (min-width: 768px) {
  .c-join-guide-flow {
    --join-flow-rail-border: 26px;
    --join-flow-rail-inset-block: var(--space-4xl);
    padding-top: var(--space-6xl);
    padding-bottom: var(--space-6xl);
  }

  .c-join-guide-flow__layout {
    max-width: 800px;
  }

  .c-join-guide-flow__main {
    max-width: 800px;
  }

  .c-join-guide-flow__card {
    max-width: 800px;
  }

  .c-join-guide-flow__card-inner {
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    min-height: 188px;
  }

  .c-join-guide-flow__figure {
    margin: 0;
  }

  .c-join-guide-flow__img {
    width: var(--join-flow-image-width-md);
    height: var(--join-flow-image-height-md);
  }

  .c-join-guide-flow__content {
    flex: 1;
  }
}