.page-scenarios {
  --sc-filter-line: var(--color-line);
}

/* ===================== 首屏：深色夜景带 ===================== */
.page-scenarios .sc-hero {
  position: relative;
  overflow: hidden;
  padding-block: calc(var(--section-y) * 0.72) var(--section-y);
}

.page-scenarios .sc-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, var(--color-contrast-line) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.6;
  pointer-events: none;
}

.page-scenarios .sc-hero > .container {
  position: relative;
  z-index: 1;
}

.page-scenarios .sc-hero .breadcrumbs {
  display: block;
  margin-bottom: var(--space-4);
  color: var(--color-contrast-ink);
  opacity: 0.7;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
}

.page-scenarios .sc-hero .breadcrumbs a {
  color: var(--color-contrast-accent);
  text-decoration: none;
}

.page-scenarios .sc-hero .breadcrumbs a:hover,
.page-scenarios .sc-hero .breadcrumbs a:focus-visible {
  text-decoration: underline;
}

.page-scenarios .sc-hero__eyebrow {
  color: var(--color-contrast-accent);
}

.page-scenarios .sc-hero__title {
  margin: var(--space-2) 0 0;
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: 1.02;
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.page-scenarios .sc-hero__lead {
  max-width: 58ch;
  margin: var(--space-3) 0 0;
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  opacity: 0.84;
}

.page-scenarios .sc-hero__grid {
  margin-top: var(--space-6);
  display: grid;
  gap: var(--space-4);
}

.page-scenarios .sc-hero__index {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px dotted var(--color-contrast-line);
}

.page-scenarios .sc-hero__index li {
  border-bottom: 1px dotted var(--color-contrast-line);
}

.page-scenarios .sc-hero__index a {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  color: var(--color-contrast-ink);
  text-decoration: none;
  transition: color 140ms linear, padding-left 140ms linear;
}

.page-scenarios .sc-hero__index a:hover,
.page-scenarios .sc-hero__index a:focus-visible {
  color: var(--color-contrast-accent);
  padding-left: var(--space-1);
}

.page-scenarios .sc-hero__code {
  min-width: 4.6em;
  font-size: var(--text-lg);
  color: var(--color-contrast-accent);
}

.page-scenarios .sc-hero__label {
  font-size: var(--text-base);
}

.page-scenarios .sc-hero__figure {
  margin: 0;
}

.page-scenarios .sc-hero__figure .figure-frame__caption {
  color: var(--color-contrast-ink);
  opacity: 0.68;
}

.page-scenarios .sc-hero__stats {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: var(--space-3) 0 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
  border-top: 1px dotted var(--color-contrast-line);
}

.page-scenarios .sc-hero__statnum {
  display: block;
  font-size: var(--text-4xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-contrast-accent);
}

.page-scenarios .sc-hero__statlabel {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  line-height: 1.4;
  color: var(--color-contrast-ink);
  opacity: 0.74;
}

/* ===================== 场景矩阵 ===================== */
.page-scenarios .sc-matrix {
  background-color: var(--color-surface);
  background-image: radial-gradient(circle, var(--color-line) 1px, transparent 1px);
  background-size: 32px 32px;
  background-position: -10px -10px;
}

.page-scenarios .sc-matrix__grid {
  position: relative;
  margin-top: var(--space-6);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gutter);
}

.page-scenarios .sc-matrix__pitch {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  color: var(--color-primary);
  opacity: 0.14;
  pointer-events: none;
}

.page-scenarios .sc-cell {
  position: relative;
  z-index: 1;
  padding: var(--space-4) var(--space-3) var(--space-3);
  border: var(--border-thin) dotted var(--color-line);
  background: transparent;
  transition: border-color 160ms linear, border-style 160ms linear;
}

.page-scenarios .sc-cell:hover,
.page-scenarios .sc-cell:focus-within {
  border-style: solid;
  border-color: var(--color-primary);
}

.page-scenarios .sc-cell__coord {
  position: absolute;
  top: var(--space-1);
  right: var(--space-2);
  color: var(--color-ink-muted);
}

.page-scenarios .sc-cell__code {
  margin: 0;
  font-size: var(--text-2xl);
  line-height: 1;
  color: var(--color-primary);
}

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

.page-scenarios .sc-cell__fields {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.page-scenarios .sc-cell__fields li {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
  padding: 2px var(--space-1);
  background-color: var(--color-surface-deep);
  border-radius: var(--radius-sm);
}

.page-scenarios .sc-cell__link {
  display: inline-block;
  margin-top: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: var(--border-thin) dotted var(--color-accent);
  transition: color 140ms linear, border-color 140ms linear;
}

.page-scenarios .sc-cell__link:hover,
.page-scenarios .sc-cell__link:focus-visible {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* ===================== 场景分组 ===================== */
.page-scenarios .sc-group {
  scroll-margin-top: 96px;
}

.page-scenarios .sc-group--tinted {
  background-color: var(--color-surface-alt);
}

.page-scenarios .sc-group__head {
  display: grid;
  gap: var(--space-2);
}

.page-scenarios .sc-group__code {
  margin: 0;
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 0.86;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.page-scenarios .sc-group__title {
  margin: var(--space-1) 0 0;
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

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

.page-scenarios .sc-group__body {
  margin-top: var(--space-4);
  display: grid;
  gap: var(--space-4);
}

.page-scenarios .sc-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-scenarios .sc-list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-1);
  padding: var(--space-2) 0;
  border-bottom: 1px dotted var(--color-line);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-scenarios .sc-list__key {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

.page-scenarios .sc-fold {
  margin-top: var(--space-3);
  padding-left: var(--space-2);
  border-left: var(--border-thin) solid var(--color-primary);
}

.page-scenarios .sc-fold > summary {
  cursor: pointer;
  list-style: none;
  padding: var(--space-1) 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-primary);
  transition: color 140ms linear;
}

.page-scenarios .sc-fold > summary::-webkit-details-marker {
  display: none;
}

.page-scenarios .sc-fold > summary::before {
  content: "＋ ";
  color: var(--color-accent);
}

.page-scenarios .sc-fold[open] > summary::before {
  content: "－ ";
}

.page-scenarios .sc-fold > summary:hover,
.page-scenarios .sc-fold > summary:focus-visible {
  color: var(--color-accent);
}

.page-scenarios .sc-fold__body {
  list-style: none;
  margin: var(--space-1) 0 0;
  padding: 0 0 var(--space-2);
}

.page-scenarios .sc-fold__body li {
  padding: var(--space-1) 0;
  border-bottom: 1px dotted var(--color-line);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-scenarios .sc-entries {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-primary);
}

.page-scenarios .sc-entries__label {
  color: var(--color-ink-muted);
}

.page-scenarios .sc-entries ul {
  list-style: none;
  margin: var(--space-2) 0 0;
  padding: 0;
}

.page-scenarios .sc-entries li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-1) var(--space-2);
  padding: var(--space-2) 0;
  border-bottom: 1px dotted var(--color-line);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
}

.page-scenarios .sc-entries__code {
  min-width: 4.8em;
  color: var(--color-primary);
}

.page-scenarios .sc-entries__name {
  flex: 1 1 12em;
  color: var(--color-ink);
}

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

.page-scenarios .sc-inline-link {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: var(--border-thin) dotted var(--color-accent);
  transition: color 140ms linear, border-color 140ms linear;
}

.page-scenarios .sc-inline-link:hover,
.page-scenarios .sc-inline-link:focus-visible {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  border-bottom-style: solid;
}

.page-scenarios .sc-group__figure {
  margin: 0;
}

/* 刻度尺（SC-01 视觉） */
.page-scenarios .sc-ruler {
  padding: var(--space-3);
  background-color: var(--color-highlight);
  border: var(--border-thin) dotted var(--color-primary);
}

.page-scenarios .sc-ruler__label {
  color: var(--color-primary);
  margin: 0;
}

.page-scenarios .sc-ruler__ticks {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
}

.page-scenarios .sc-ruler__ticks li {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink);
}

.page-scenarios .sc-ruler__tick {
  display: inline-block;
  width: 10px;
  height: 1px;
  background-color: var(--color-accent);
}

.page-scenarios .sc-ruler__name {
  white-space: nowrap;
}

.page-scenarios .sc-ruler__note {
  margin: var(--space-3) 0 0;
  padding-top: var(--space-2);
  border-top: 1px dotted var(--color-primary);
  font-size: var(--text-xs);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ===================== 对照表与筛选 ===================== */
.page-scenarios .sc-map {
  scroll-margin-top: 96px;
}

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

.page-scenarios .sc-filter input[type="radio"] {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-scenarios .sc-filter__bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin-bottom: var(--space-3);
}

.page-scenarios .sc-filter__bar label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  padding: var(--space-1) var(--space-2);
  border: var(--border-thin) dotted var(--sc-filter-line);
  color: var(--color-ink-muted);
  cursor: pointer;
  transition: color 140ms linear, border-color 140ms linear, background-color 140ms linear;
}

.page-scenarios .sc-filter__bar label:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.page-scenarios #scf-all:checked ~ .sc-filter__bar label[for="scf-all"],
.page-scenarios #scf-01:checked ~ .sc-filter__bar label[for="scf-01"],
.page-scenarios #scf-02:checked ~ .sc-filter__bar label[for="scf-02"],
.page-scenarios #scf-03:checked ~ .sc-filter__bar label[for="scf-03"],
.page-scenarios #scf-04:checked ~ .sc-filter__bar label[for="scf-04"] {
  background-color: var(--color-primary-soft);
  border-style: solid;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.page-scenarios #scf-all:focus-visible ~ .sc-filter__bar label[for="scf-all"],
.page-scenarios #scf-01:focus-visible ~ .sc-filter__bar label[for="scf-01"],
.page-scenarios #scf-02:focus-visible ~ .sc-filter__bar label[for="scf-02"],
.page-scenarios #scf-03:focus-visible ~ .sc-filter__bar label[for="scf-03"],
.page-scenarios #scf-04:focus-visible ~ .sc-filter__bar label[for="scf-04"] {
  outline: 2px solid var(--color-focus);
  outline-offset: 1px;
}

.page-scenarios #scf-01:checked ~ .sc-tablewrap .sc-map__row:not(.sc-map__row--01),
.page-scenarios #scf-02:checked ~ .sc-tablewrap .sc-map__row:not(.sc-map__row--02),
.page-scenarios #scf-03:checked ~ .sc-tablewrap .sc-map__row:not(.sc-map__row--03),
.page-scenarios #scf-04:checked ~ .sc-tablewrap .sc-map__row:not(.sc-map__row--04) {
  display: none;
}

.page-scenarios .sc-tablewrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-top: 1px solid var(--color-primary);
}

.page-scenarios .sc-map__table {
  width: 100%;
  min-width: 34rem;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.page-scenarios .sc-map__caption {
  caption-side: top;
  text-align: left;
  padding: var(--space-2) 0;
  color: var(--color-ink-muted);
}

.page-scenarios .sc-map__table th,
.page-scenarios .sc-map__table td {
  text-align: left;
  padding: var(--space-2) var(--space-2) var(--space-2) 0;
  border-bottom: 1px dotted var(--color-line);
  vertical-align: baseline;
  line-height: var(--leading-body);
}

.page-scenarios .sc-map__table thead th {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-body);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
  border-bottom: 1px solid var(--color-line);
}

.page-scenarios .sc-map__table tbody tr:nth-child(even) {
  background-color: var(--color-surface-alt);
}

.page-scenarios .sc-map__table tbody tr {
  transition: background-color 140ms linear;
}

.page-scenarios .sc-map__table tbody tr:hover {
  background-color: var(--color-primary-soft);
}

.page-scenarios .sc-map__table tbody td:first-child {
  font-family: var(--font-mono);
  color: var(--color-ink-muted);
  transition: color 140ms linear;
}

.page-scenarios .sc-map__table tbody tr:hover td:first-child {
  color: var(--color-primary);
}

/* ===================== 收束说明 ===================== */
.page-scenarios .sc-tail {
  margin-top: var(--space-6);
  display: grid;
  gap: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px dotted var(--color-line);
}

.page-scenarios .sc-tail__label {
  color: var(--color-accent);
  margin: 0 0 var(--space-1);
}

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

/* ===================== 响应式 ===================== */
@media (min-width: 640px) {
  .page-scenarios .sc-list li {
    grid-template-columns: 7.2em minmax(0, 1fr);
    gap: var(--space-2);
  }

  .page-scenarios .sc-list__key {
    text-align: left;
  }

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

@media (min-width: 900px) {
  .page-scenarios .sc-hero__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--space-6);
    align-items: start;
  }

  .page-scenarios .sc-hero__index {
    margin-top: var(--space-1);
  }

  .page-scenarios .sc-matrix__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .page-scenarios .sc-cell--a { grid-column: span 7; }
  .page-scenarios .sc-cell--b { grid-column: span 5; }
  .page-scenarios .sc-cell--c { grid-column: span 5; }
  .page-scenarios .sc-cell--d { grid-column: span 7; }

  .page-scenarios .sc-group__head {
    grid-template-columns: minmax(0, auto) minmax(0, 1fr);
    gap: var(--space-4);
    align-items: start;
  }

  .page-scenarios .sc-group__headtext {
    padding-top: var(--space-1);
  }

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

  .page-scenarios .sc-group__body--flip > :first-child { order: 2; }
  .page-scenarios .sc-group__body--flip > :last-child { order: 1; }

  .page-scenarios .sc-tail {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--space-6);
  }
}

@media (min-width: 1180px) {
  .page-scenarios .sc-group__head {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 3fr);
  }

  .page-scenarios .sc-ruler {
    padding: var(--space-4);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-scenarios *,
  .page-scenarios *::before,
  .page-scenarios *::after {
    transition-duration: 0ms !important;
    animation-duration: 0ms !important;
  }
}