.page-custom-steps {
  --cs-rail: calc(var(--space-8) * 2 + var(--space-2));
  --cs-dot: calc(var(--space-1) + 3px);
}

/* ---------- 首屏：左主右判断 ---------- */
.page-custom-steps .cs-head__grid {
  display: grid;
  gap: var(--space-6);
}

.page-custom-steps .cs-head h1 {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 800;
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  margin: var(--space-3) 0 0;
  max-width: 24ch;
}

.page-custom-steps .cs-head__text {
  margin: var(--space-4) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

.page-custom-steps .cs-verdict {
  border-left: 1px dotted var(--color-primary);
  padding-left: var(--space-4);
}

.page-custom-steps .cs-verdict__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.02em;
  color: var(--color-primary);
}

.page-custom-steps .cs-verdict__text {
  margin: var(--space-2) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

/* ---------- 通用小标题与导语 ---------- */
.page-custom-steps .cs-h2 {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 800;
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  margin: 0;
}

.page-custom-steps .cs-lead {
  margin: var(--space-3) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

/* ---------- 工序单 ---------- */
.page-custom-steps .cs-steps {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
  border-top: 1px dotted var(--color-line);
}

.page-custom-steps .cs-step {
  display: grid;
  gap: var(--space-2);
  padding-block: var(--space-6);
  border-bottom: 1px dotted var(--color-line);
}

.page-custom-steps .cs-step__meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
}

.page-custom-steps .cs-step__num {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--color-ink-muted);
}

.page-custom-steps .cs-step__dur {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.02em;
  color: var(--color-ink-muted);
  white-space: nowrap;
}

.page-custom-steps .cs-step__body {
  max-width: var(--measure);
}

.page-custom-steps .cs-step__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 800;
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-custom-steps .cs-step__desc {
  margin: var(--space-2) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-custom-steps .cs-facts {
  margin: var(--space-3) 0 0;
  padding: var(--space-3) 0 0;
  display: grid;
  gap: var(--space-3);
  border-top: 1px dotted var(--color-line);
}

.page-custom-steps .cs-fact dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.02em;
  color: var(--color-ink-muted);
}

.page-custom-steps .cs-fact dd {
  margin: var(--space-1) 0 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 图文错位 ---------- */
.page-custom-steps .cs-step__body--split {
  display: grid;
  gap: var(--space-4);
  max-width: none;
}

.page-custom-steps .cs-photo {
  margin: 0;
}

.page-custom-steps .cs-photo__cap {
  margin-top: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: var(--leading-body);
  letter-spacing: 0.02em;
  color: var(--color-ink-muted);
}

.page-custom-steps .figure-frame {
  position: relative;
  overflow: hidden;
}

.page-custom-steps .figure-frame img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-custom-steps .cs-photo--wide {
  margin-top: var(--space-8);
}

/* ---------- 时间线 ---------- */
.page-custom-steps .cs-timeline {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
}

.page-custom-steps .cs-tl {
  position: relative;
  padding-left: var(--space-8);
  padding-bottom: var(--space-6);
}

.page-custom-steps .cs-tl::before {
  content: "";
  position: absolute;
  left: var(--space-2);
  top: var(--space-3);
  bottom: 0;
  border-left: 1px dotted var(--color-line);
}

.page-custom-steps .cs-tl:last-child {
  padding-bottom: 0;
}

.page-custom-steps .cs-tl:last-child::before {
  bottom: auto;
  height: var(--space-3);
}

.page-custom-steps .cs-tl__dot {
  position: absolute;
  left: calc(var(--space-2) - var(--cs-dot) / 2);
  top: var(--space-1);
  width: var(--cs-dot);
  height: var(--cs-dot);
  border-radius: 50%;
  background: var(--color-line);
}

.page-custom-steps .cs-tl--end .cs-tl__dot {
  background: var(--color-primary);
}

.page-custom-steps .cs-tl__day {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.02em;
  color: var(--color-ink-muted);
}

.page-custom-steps .cs-tl--end .cs-tl__day {
  color: var(--color-primary);
}

.page-custom-steps .cs-tl__title {
  margin: var(--space-1) 0 0;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 800;
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-custom-steps .cs-tl__text {
  margin: var(--space-2) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

/* ---------- 卡点区：唯一一次明暗反转 ---------- */
.page-custom-steps .cs-blocks__lead {
  margin: var(--space-3) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

.page-custom-steps .cs-blocks__grid {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-6);
}

.page-custom-steps .cs-block {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-custom-steps .cs-block + .cs-block {
  margin-top: var(--space-2);
}

.page-custom-steps .cs-block__sum {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
  list-style: none;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 800;
  line-height: var(--leading-heading);
  color: var(--color-contrast-ink);
}

.page-custom-steps .cs-block__sum::-webkit-details-marker {
  display: none;
}

.page-custom-steps .cs-block__sum:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-custom-steps .cs-block__dot {
  width: var(--cs-dot);
  height: var(--cs-dot);
  border-radius: 50%;
  background: var(--color-contrast-line);
}

.page-custom-steps .cs-block[open] .cs-block__dot {
  background: var(--color-contrast-accent);
}

.page-custom-steps .cs-block__sign::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  color: var(--color-contrast-accent);
}

.page-custom-steps .cs-block[open] .cs-block__sign::before {
  content: "−";
}

.page-custom-steps .cs-block__body {
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px dotted var(--color-contrast-line);
}

.page-custom-steps .cs-block__body p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
}

/* ---------- 从这里继续 ---------- */
.page-custom-steps .cs-next__list {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
  border-top: 1px dotted var(--color-line);
}

.page-custom-steps .cs-next__item {
  display: grid;
  gap: var(--space-1);
  padding-block: var(--space-4);
  border-bottom: 1px dotted var(--color-line);
}

.page-custom-steps .cs-next__idx {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.02em;
  color: var(--color-ink-muted);
}

.page-custom-steps .cs-next__link {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 800;
  line-height: var(--leading-heading);
  color: var(--color-ink);
  text-decoration: none;
  border-bottom: 1px dotted var(--color-line);
}

.page-custom-steps .cs-next__link:hover,
.page-custom-steps .cs-next__link:focus-visible {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.page-custom-steps .cs-next__link:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-custom-steps .cs-next__desc {
  margin: var(--space-1) 0 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

.page-custom-steps .cs-outro {
  margin: var(--space-6) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
  max-width: var(--measure);
  border-left: 1px dotted var(--color-primary);
  padding-left: var(--space-4);
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 700px) {
  .page-custom-steps .cs-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-custom-steps .cs-step {
    grid-template-columns: var(--cs-rail) minmax(0, 1fr);
    gap: var(--space-6);
  }

  .page-custom-steps .cs-step__meta {
    display: block;
    text-align: right;
  }

  .page-custom-steps .cs-step__dur {
    display: block;
    margin-top: var(--space-2);
  }

  .page-custom-steps .cs-next__item {
    grid-template-columns: var(--cs-rail) minmax(0, 1fr);
    gap: var(--space-6);
    align-items: baseline;
  }

  .page-custom-steps .cs-next__idx {
    text-align: right;
  }
}

@media (min-width: 900px) {
  .page-custom-steps .cs-head__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: var(--space-8);
    align-items: end;
  }

  .page-custom-steps .cs-head h1 {
    font-size: var(--text-4xl);
  }

  .page-custom-steps .cs-step__body--split {
    grid-template-columns: minmax(0, 1fr) calc(var(--space-8) * 5);
    gap: var(--space-6);
    align-items: start;
  }

  .page-custom-steps .cs-blocks__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-custom-steps .cs-next__desc {
    max-width: 60ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-custom-steps .cs-block__sum {
    transition: none;
  }
}