/* ============================================
   home_block_4 — APK ANDROID (vertical timeline 6 nodes + connector line)
   ============================================ */

.home_block_4 {
  background: var(--bg-dark);
  padding: 10rem var(--main-padding);
  position: relative;
}

.home_block_4::before {
  content: "";
  position: absolute;
  top: 20%;
  right: -15rem;
  width: 50rem;
  height: 50rem;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 65%);
  filter: blur(80px);
  pointer-events: none;
}

.home_block_4_inner {
  display: flex;
  flex-direction: column;
  gap: 4rem;
  position: relative;
  z-index: 1;
}

.home_block_4_heading {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
  max-width: 900px;
}

.home_block_4_timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
  list-style: none;
  padding: 0;
  margin: 0 auto;
  max-width: 900px;
  width: 100%;
}

.home_block_4_timeline::before {
  content: "";
  position: absolute;
  left: 1.8rem;
  top: 1rem;
  bottom: 1rem;
  width: 2px;
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent-dark) 50%, transparent 100%);
}

.home_block_4_step {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  padding: 1.5rem 0;
  position: relative;
}

.home_block_4_num {
  flex-shrink: 0;
  width: 3.6rem;
  height: 3.6rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-surface);
  border: 2px solid var(--accent);
  color: var(--accent);
  font-weight: 800;
  font-size: 1.2rem;
  border-radius: var(--radius-full);
  position: relative;
  z-index: 1;
  box-shadow: 0 0 16px var(--accent-glow);
}

.home_block_4_step_body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  background: var(--bg-surface);
  border: 1px solid var(--accent-line-soft);
  border-radius: var(--radius);
  padding: 1.6rem 2rem;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.home_block_4_step:hover .home_block_4_step_body {
  border-color: var(--accent-border);
  transform: translateX(4px);
}

.home_block_4_step_body > h3 {
  color: var(--text);
}

.home_block_4_cta_row {
  display: flex;
  justify-content: center;
  margin-top: 1rem;
}

@media (max-width: 1024px) {
  .home_block_4 {
    padding: 14rem var(--main-padding);
  }

  .home_block_4_timeline::before {
    left: 3rem;
  }

  .home_block_4_step {
    gap: 2.4rem;
    padding: 2rem 0;
  }

  .home_block_4_num {
    width: 6rem;
    height: 6rem;
    font-size: 2.4rem;
    border-width: 3px;
  }

  .home_block_4_step_body {
    padding: 2.4rem 2.6rem;
    gap: 0.8rem;
  }
}