.page-scenarios {
  --sc-rail: 76px;
  background: var(--color-surface);
  color: var(--color-ink);
  overflow-x: hidden;
}

.page-scenarios .breadcrumbs {
  padding-top: var(--space-3);
}

/* ---------- 首屏 ---------- */
.page-scenarios .sc-hero {
  padding: var(--space-6) 0 var(--space-4);
  background:
    radial-gradient(115% 88% at 6% -8%, color-mix(in srgb, var(--color-primary-soft) 88%, transparent) 0%, transparent 64%),
    radial-gradient(85% 72% at 98% 4%, color-mix(in srgb, var(--color-highlight) 76%, transparent) 0%, transparent 62%),
    var(--color-surface);
}

.page-scenarios .sc-hero__inner {
  position: relative;
}

.page-scenarios .sc-hero__title {
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: 1.12;
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  margin: var(--space-2) 0 var(--space-3);
  max-width: 11em;
}

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

.page-scenarios .sc-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.page-scenarios .sc-figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
  margin-top: var(--space-6);
}

.page-scenarios .sc-figure {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-surface-alt) 62%, var(--color-primary-soft));
  box-shadow: var(--shadow-1);
}

.page-scenarios .sc-figure .figure {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.page-scenarios .sc-figure__label {
  font-size: var(--text-sm);
  line-height: 1.55;
  color: var(--color-ink-soft);
}

/* ---------- 分组导航 ---------- */
.page-scenarios .sc-overview {
  padding-bottom: 0;
}

.page-scenarios .sc-jump {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
}

.page-scenarios .sc-jump__item {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: var(--space-3) var(--space-3) var(--space-3) var(--space-4);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-surface-alt);
  text-decoration: none;
  transition: transform .24s ease, box-shadow .24s ease, border-color .24s ease;
}

.page-scenarios .sc-jump__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: var(--space-3);
  bottom: var(--space-3);
  width: 4px;
  border-radius: var(--radius-pill);
  background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-accent) 100%);
  opacity: .45;
  transition: opacity .24s ease;
}

.page-scenarios .sc-jump__item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
  border-color: color-mix(in srgb, var(--color-primary) 30%, var(--color-line));
}

.page-scenarios .sc-jump__item:hover::before,
.page-scenarios .sc-jump__item[aria-current="true"]::before {
  opacity: 1;
}

.page-scenarios .sc-jump__item:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

.page-scenarios .sc-jump__no {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: .14em;
  color: var(--color-accent);
}

.page-scenarios .sc-jump__name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  line-height: var(--leading-heading);
}

.page-scenarios .sc-jump__desc {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

/* ---------- 图片块 ---------- */
.page-scenarios .sc-shot {
  margin-top: var(--space-6);
}

.page-scenarios .sc-shot figure {
  margin: 0;
}

.page-scenarios .sc-shot--inset {
  margin-top: var(--space-4);
}

.page-scenarios .sc-shot--side {
  margin-top: var(--space-4);
}

.page-scenarios .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 分组 ---------- */
.page-scenarios .sc-group {
  padding-top: var(--section-y);
}

.page-scenarios .sc-band {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-1) var(--space-3);
  padding: var(--space-3) var(--space-4);
  border: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 18%, transparent);
  border-radius: var(--radius-lg);
  background: linear-gradient(100deg, var(--color-primary-soft) 0%, var(--color-highlight) 100%);
  box-shadow: var(--shadow-1);
}

.page-scenarios .sc-band__no {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: .14em;
  color: var(--color-accent);
  background: color-mix(in srgb, var(--color-surface) 74%, transparent);
  border-radius: var(--radius-pill);
  padding: 4px 12px;
}

.page-scenarios .sc-band__title {
  flex: 1 1 auto;
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-scenarios .sc-band__range {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-scenarios .sc-group__intro {
  margin: var(--space-3) 0 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  padding-left: var(--space-3);
  border-left: 3px solid var(--color-primary);
}

/* ---------- 步骤 ---------- */
.page-scenarios .sc-steps {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
}

.page-scenarios .sc-step {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-1);
  padding: var(--space-4) 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-scenarios .sc-step:last-child {
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-scenarios .sc-step__rail {
  position: relative;
  padding-left: var(--space-3);
}

.page-scenarios .sc-step__rail::before {
  content: "";
  position: absolute;
  left: 0;
  top: 3px;
  width: 3px;
  height: 34px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  transition: background-color .24s ease, height .24s ease;
}

.page-scenarios .sc-step:hover .sc-step__rail::before {
  height: 48px;
  background: var(--color-focus);
}

.page-scenarios .sc-step__no {
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-primary);
  transition: color .24s ease;
}

.page-scenarios .sc-step:hover .sc-step__no {
  color: var(--color-focus);
}

.page-scenarios .sc-step__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-scenarios .sc-step__fields {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-1);
  margin: 0;
}

.page-scenarios .sc-step__fields dt {
  justify-self: start;
  align-self: start;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: .12em;
  color: var(--color-accent);
  background: var(--color-primary-soft);
  border-radius: var(--radius-pill);
  padding: 3px 12px;
  white-space: nowrap;
}

.page-scenarios .sc-step__fields dd {
  margin: 0 0 var(--space-2);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
  max-width: var(--measure);
}

.page-scenarios .sc-step__fields dd:last-child {
  margin-bottom: 0;
}

/* ---------- 区块头 ---------- */
.page-scenarios .sc-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-1) var(--space-3);
  margin-bottom: var(--space-3);
}

.page-scenarios .sc-head__title {
  flex: 1 1 auto;
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-scenarios .sc-head__note {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

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

/* ---------- 确认清单 ---------- */
.page-scenarios .sc-check {
  padding-top: var(--section-y);
}

.page-scenarios .sc-check__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-scenarios .sc-check__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-line);
  background: var(--color-surface-alt);
  transition: background-color .24s ease;
}

.page-scenarios .sc-check__item:hover {
  background: color-mix(in srgb, var(--color-primary-soft) 55%, var(--color-surface-alt));
}

.page-scenarios .sc-check__box {
  appearance: none;
  -webkit-appearance: none;
  position: relative;
  flex: none;
  width: 20px;
  height: 20px;
  margin: 0;
  border: var(--border-thin) solid var(--color-line);
  border-radius: calc(var(--radius-sm) / 2);
  background: var(--color-surface);
  cursor: pointer;
  transition: background-color .2s ease, border-color .2s ease;
}

.page-scenarios .sc-check__box:checked {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.page-scenarios .sc-check__box:checked::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--color-primary-ink);
  border-bottom: 2px solid var(--color-primary-ink);
  transform: rotate(42deg);
}

.page-scenarios .sc-check__box:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-scenarios .sc-check__label {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-ink);
}

.page-scenarios .sc-check__no {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: .1em;
  color: var(--color-ink-muted);
  transition: color .2s ease;
}

.page-scenarios .sc-check__box:checked ~ .sc-check__label .sc-check__no,
.page-scenarios .sc-check__box:checked ~ .sc-check__label .sc-check__text {
  color: var(--color-ink-muted);
}

.page-scenarios .sc-check__box:checked ~ .sc-check__label .sc-check__text {
  text-decoration: line-through;
  text-decoration-color: var(--color-accent);
  text-decoration-thickness: 1px;
}

/* ---------- 偏航 ---------- */
.page-scenarios .sc-drift {
  padding-top: var(--section-y);
  padding-bottom: var(--section-y-lg);
}

.page-scenarios .sc-drift__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.page-scenarios .sc-drift__item {
  padding: var(--space-3) var(--space-3) var(--space-3) var(--space-4);
  border: var(--border-thin) solid var(--color-line);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-1);
  transition: border-left-color .24s ease, box-shadow .24s ease;
}

.page-scenarios .sc-drift__item:hover {
  border-left-color: var(--color-focus);
  box-shadow: var(--shadow-2);
}

.page-scenarios .sc-drift__no {
  display: block;
  margin-bottom: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: .14em;
  color: var(--color-accent);
}

.page-scenarios .sc-drift__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-scenarios .sc-drift__fix {
  margin: 0 0 var(--space-2);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-scenarios .sc-drift__esc {
  margin: 0;
  padding-top: var(--space-2);
  border-top: var(--border-thin) dashed var(--color-line);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-muted);
}

/* ---------- 收口 ---------- */
.page-scenarios .sc-closing {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-scenarios .sc-closing figure {
  margin: 0;
}

.page-scenarios .sc-closing__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-scenarios .sc-closing__text p {
  margin: 0 0 var(--space-3);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

.page-scenarios .sc-closing__note {
  padding-left: var(--space-3);
  border-left: 3px solid var(--color-primary);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-scenarios .sc-mono {
  font-family: var(--font-mono);
  color: var(--color-ink);
}

.page-scenarios .sc-link {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color .2s ease;
}

.page-scenarios .sc-link:hover {
  color: var(--color-focus);
}

.page-scenarios .sc-link:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-scenarios .sc-step__fields {
    grid-template-columns: auto minmax(0, 1fr);
    gap: var(--space-2) var(--space-3);
    align-items: start;
  }

  .page-scenarios .sc-step__fields dd {
    margin-bottom: 0;
  }

  .page-scenarios .sc-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-scenarios .sc-check__item {
    padding: var(--space-3) var(--space-3);
  }
}

@media (min-width: 820px) {
  .page-scenarios .sc-jump {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-scenarios .sc-step {
    grid-template-columns: var(--sc-rail) minmax(0, 1fr);
    gap: var(--space-4);
    padding: var(--space-4) 0;
  }

  .page-scenarios .sc-step__rail {
    padding-left: var(--space-2);
  }

  .page-scenarios .sc-hero {
    padding: var(--space-8) 0 var(--space-4);
  }

  .page-scenarios .sc-hero__lead {
    font-size: var(--text-lg);
  }

  .page-scenarios .sc-shot--side {
    max-width: 720px;
    margin-left: auto;
  }

  .page-scenarios .sc-drift__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-scenarios .sc-closing {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
    gap: var(--space-6);
  }
}

@media (min-width: 1024px) {
  .page-scenarios .sc-hero__inner {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    grid-template-areas:
      "eyebrow figures"
      "title   figures"
      "lead    figures"
      "actions figures";
    column-gap: var(--space-6);
    align-items: end;
  }

  .page-scenarios .sc-hero__inner .eyebrow {
    grid-area: eyebrow;
  }

  .page-scenarios .sc-hero__title {
    grid-area: title;
  }

  .page-scenarios .sc-hero__lead {
    grid-area: lead;
  }

  .page-scenarios .sc-hero__actions {
    grid-area: actions;
  }

  .page-scenarios .sc-figures {
    grid-area: figures;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 0;
    align-self: end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-scenarios *,
  .page-scenarios *::before,
  .page-scenarios *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    transform: none !important;
  }
}