.op-page {
  --op-line: var(--clr-border);
}

.op-stage {
  scroll-margin-top: calc(var(--header-h) + 4.5rem);
}

.op-stage--alt {
  background: var(--clr-bg-alt);
}

.op-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(1.75rem, 4vw, 4rem);
  align-items: center;
}

.op-intro--reverse {
  direction: rtl;
}

.op-intro--reverse > * {
  direction: ltr;
}

.op-intro p {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--clr-text-body);
  max-width: 38rem;
}

.op-media {
  overflow: hidden;
  border: 1px solid var(--clr-border);
  border-radius: 0 72px 0 72px;
}

.op-media img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

.op-stage-bar {
  position: sticky;
  top: var(--header-h);
  z-index: 8;
  background: var(--clr-white);
  border-bottom: 1px solid var(--op-line);
}

.op-stage-nav {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
}

.op-stage .op-flow {
  margin-top: 2.75rem;
}

.op-stage-nav a {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.15rem 1.1rem 1.25rem;
  color: var(--clr-text);
  border-right: 1px solid var(--op-line);
  min-height: 88px;
}

.op-stage-nav a:last-child {
  border-right: none;
}

.op-stage-nav a:hover,
.op-stage-nav a:focus-visible {
  color: var(--clr-primary);
  background: var(--clr-bg-alt);
}

.op-stage-nav a.is-current {
  color: var(--clr-primary);
  box-shadow: inset 0 -3px 0 var(--clr-primary);
}

.op-stage-num {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--clr-text-light);
}

.op-stage-nav a.is-current .op-stage-num {
  color: var(--clr-primary);
}

.op-stage-label {
  font-family: 'Sora', 'Inter', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.3;
}

.op-checks {
  margin-top: 1.5rem;
  display: grid;
  gap: 0.85rem;
}

.op-check {
  display: grid;
  grid-template-columns: 10px 1fr;
  gap: 0.85rem;
  align-items: start;
  color: var(--clr-text-body);
  font-size: 0.98rem;
  line-height: 1.55;
}

.op-check::before {
  content: "";
  width: 8px;
  height: 8px;
  margin-top: 0.45rem;
  background: var(--clr-primary);
  transform: rotate(45deg);
}

.op-flow {
  border-top: 1px solid var(--op-line);
}

.op-flow-row {
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 1fr);
  gap: 1.25rem 1.75rem;
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--op-line);
  align-items: start;
}

.op-flow-row h3 {
  font-size: 1.2rem;
  margin-bottom: 0.4rem;
}

.op-flow-row p {
  color: var(--clr-text-body);
  margin: 0;
  max-width: 40rem;
}

.op-flow-index {
  font-family: 'Sora', 'Inter', sans-serif;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--clr-primary);
  line-height: 1;
}

.op-flow-link {
  justify-self: end;
  align-self: center;
  font-weight: 700;
  font-size: 0.88rem;
}

.op-pager {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--op-line);
}

.op-pager a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  font-weight: 700;
}

.op-pager .is-disabled {
  color: var(--clr-text-light);
  pointer-events: none;
}

@media (max-width: 1024px) {
  .op-stage-bar {
    position: static;
  }

  .op-intro,
  .op-intro--reverse,
  .op-flow-row {
    grid-template-columns: 1fr;
    direction: ltr;
  }

  .op-stage-nav {
    grid-template-columns: 1fr 1fr;
  }

  .op-stage-nav a:nth-child(2n) {
    border-right: none;
  }

  .op-stage-nav a:nth-child(-n+2) {
    border-bottom: 1px solid var(--op-line);
  }

  .op-media img {
    height: 260px;
  }

  .op-flow-link {
    justify-self: start;
  }
}

@media (max-width: 640px) {
  .op-stage-nav {
    grid-template-columns: 1fr;
  }

  .op-stage-nav a {
    border-right: none;
    border-bottom: 1px solid var(--op-line);
  }

  .op-stage-nav a:last-child {
    border-bottom: none;
  }

  .op-media {
    border-radius: 0 40px 0 40px;
  }
}