.process-section {
  background: var(--color-white);
  padding: 100px 40px 120px;
  position: relative;
  overflow: visible;
}

.process-section__track {
  position: relative;
}

.process-section__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(40px, 6vw, 100px);
  align-items: stretch;
}

.process-section__left {
  position: relative;
  align-self: stretch;
}

.process-section__sticky {
  position: sticky;
  top: calc(var(--header-height) + 32px);
  height: fit-content;
  max-height: calc(100vh - var(--header-height) - 64px);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}

.process-section.is-scrolling .process-section__sticky {
  transform: translateY(0);
}

.process-section.is-pinned .process-section__sticky {
  transform: translateY(0);
}

.process-section__label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-services-label);
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.process-section__title {
  font-size: clamp(1.75rem, 4.5vw, 3.25rem);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.03em;
  line-height: 1.08;
  color: var(--color-services-black);
  margin-bottom: 40px;
  max-width: 520px;
}

.process-section__media {
  max-width: 480px;
}

.process-section__image-frame {
  position: relative;
  border-radius: 40px;
  overflow: hidden;
  background: var(--color-services-bg);
}

.process-section__image-frame::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 72px;
  height: 72px;
  background: var(--color-white);
  border-top-left-radius: 32px;
  z-index: 3;
  pointer-events: none;
}

.process-section__carousel {
  position: relative;
  aspect-ratio: 4 / 3.2;
  overflow: hidden;
}

.process-section__carousel img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transform: scale(1.06);
  transition: opacity 0.65s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.75s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: opacity, transform;
}

.process-section__carousel img.is-active {
  opacity: 1;
  transform: scale(1);
  z-index: 1;
}

.process-section__dots {
  display: flex;
  gap: 8px;
  margin-top: 20px;
}

.process-section__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  padding: 0;
  background: var(--color-services-divider);
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.process-section__dot.is-active {
  background: var(--color-services-accent);
  transform: scale(1.25);
}

.process-section__dot:focus-visible {
  outline: 2px solid var(--color-services-accent);
  outline-offset: 2px;
}

.process-section__right {
  position: relative;
}

.process-section__timeline {
  position: relative;
  padding-left: 56px;
}

.process-section__line {
  position: absolute;
  left: 11px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-about-border);
}

.process-section__line-fill {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 0%;
  background: var(--color-services-accent);
  transition: height 0.15s linear;
}

.process-step {
  position: relative;
  min-height: clamp(420px, 72vh, 680px);
  padding: clamp(24px, 4vw, 48px) 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  opacity: 0.38;
  transition: opacity 0.5s ease;
  cursor: pointer;
}

.process-step:first-child {
  padding-top: 0;
}

.process-step:last-child {
  padding-bottom: 0;
}

.process-step.is-active {
  opacity: 1;
}

.process-step__node {
  position: absolute;
  left: -56px;
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid var(--color-about-border);
  background: var(--color-white);
  z-index: 2;
  transition: border-color var(--transition-fast),
    background var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.process-step.is-active .process-step__node {
  border-color: var(--color-services-accent);
  background: var(--color-services-accent);
  box-shadow: 0 0 0 5px rgba(232, 67, 26, 0.15);
  transform: translateY(-50%) scale(1.12);
}

.process-step__number {
  display: block;
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1;
  color: var(--color-services-accent);
  margin-bottom: 12px;
}

.process-step__title {
  font-size: clamp(1.25rem, 2.5vw, 1.65rem);
  font-weight: 800;
  color: var(--color-services-black);
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}

.process-step__text {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--color-about-muted);
  max-width: 480px;
}

@media (max-width: 960px) {
  .process-section {
    padding: 72px 24px 88px;
  }

  .process-section__inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .process-section__sticky {
    position: relative;
    top: 0;
    max-height: none;
  }

  .process-section__title {
    max-width: none;
    margin-bottom: 28px;
  }

  .process-section__media {
    max-width: none;
  }

  .process-section__timeline {
    padding-left: 48px;
  }

  .process-step {
    min-height: auto;
    padding: clamp(32px, 5vw, 56px) 0;
    justify-content: flex-start;
  }

  .process-step__node {
    left: -48px;
    top: clamp(36px, 5vw, 60px);
    transform: none;
  }

  .process-step.is-active .process-step__node {
    transform: scale(1.08);
  }
}

@media (prefers-reduced-motion: reduce) {
  .process-section__carousel img {
    transition: opacity 0.2s ease;
    transform: none;
  }

  .process-section__carousel img.is-active {
    transform: none;
  }

  .process-section__line-fill {
    transition: none;
  }

  .process-section__sticky {
    transition: none;
  }
}