/* ==========================================================
   活动周期档案 / page-scenarios
   移动优先，所有选择器限定在 .page-scenarios 作用域内
   ========================================================== */

.page-scenarios {
  background: var(--color-surface);
  color: var(--color-ink);
  overflow-x: clip;
}

.page-scenarios .section {
  padding-block: var(--section-y);
}

.page-scenarios .section--lg {
  padding-block: var(--section-y);
}

@media (min-width: 900px) {
  .page-scenarios .section,
  .page-scenarios .section--lg {
    padding-block: var(--section-y-lg);
  }
}

/* ---------- 通用：编号章节头 ---------- */
.page-scenarios .s-chapter {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-ink-muted);
}

.page-scenarios .s-chapter-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 30px;
  height: 20px;
  padding-inline: var(--space-1);
  background: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
}

.page-scenarios .s-chapter-label {
  color: var(--color-ink-soft);
}

/* ==========================================================
   A. 首屏
   ========================================================== */
.page-scenarios .s-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-scenarios .s-hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.page-scenarios .s-hero-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.34;
}

.page-scenarios .s-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
}

.page-scenarios .s-hero-slab {
  position: absolute;
  z-index: 1;
  pointer-events: none;
  display: block;
}

.page-scenarios .s-hero-slab--accent {
  top: -18%;
  right: -30%;
  width: 96%;
  height: 76%;
  background: var(--color-accent);
  clip-path: polygon(36% 0, 100% 0, 100% 100%, 0 100%);
  opacity: 0.88;
}

.page-scenarios .s-hero-slab--dark {
  right: -8%;
  bottom: -34%;
  width: 70%;
  height: 72%;
  background: var(--color-contrast-surface);
  border-left: var(--border-thin) solid var(--color-contrast-line);
  clip-path: polygon(0 6%, 100% 26%, 100% 100%, 0 100%);
}

.page-scenarios .s-hero-inner {
  position: relative;
  z-index: 2;
  padding-block: calc(var(--section-y) * 0.85) var(--section-y);
}

.page-scenarios .s-hero-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-contrast-ink);
  opacity: 0.66;
}

.page-scenarios .s-hero-crumb a {
  color: inherit;
  text-decoration: none;
  border-bottom: var(--border-thin) solid currentColor;
}

.page-scenarios .s-hero-crumb a:hover,
.page-scenarios .s-hero-crumb a:focus-visible {
  opacity: 1;
  color: var(--color-contrast-accent);
}

.page-scenarios .s-hero-grid {
  display: grid;
  gap: var(--space-6);
}

.page-scenarios .s-hero-eyebrow {
  margin: 0 0 var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  color: var(--color-contrast-accent);
}

.page-scenarios .s-hero-title {
  margin: 0 0 var(--space-4);
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
  max-width: 12ch;
  text-wrap: balance;
}

.page-scenarios .s-hero-lede {
  margin: 0;
  max-width: 48ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  opacity: 0.84;
}

.page-scenarios .s-hero-figures {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  padding: var(--space-4);
  border: var(--border-thin) solid var(--color-contrast-line);
  background: color-mix(in srgb, var(--color-contrast-surface) 82%, transparent);
}

.page-scenarios .s-figure {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-bottom: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.page-scenarios .s-figure:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-scenarios .s-figure-num {
  font-family: var(--font-heading);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 0.95;
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-accent);
}

.page-scenarios .s-figure-cap {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-contrast-ink);
  opacity: 0.7;
}

@media (min-width: 600px) and (max-width: 899px) {
  .page-scenarios .s-hero-figures {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-scenarios .s-figure {
    padding-bottom: 0;
    padding-right: var(--space-3);
    border-bottom: 0;
    border-right: var(--border-thin) solid var(--color-contrast-line);
  }

  .page-scenarios .s-figure:last-child {
    padding-right: 0;
    border-right: 0;
  }
}

@media (min-width: 900px) {
  .page-scenarios .s-hero-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--gutter);
    align-items: end;
  }

  .page-scenarios .s-hero-copy {
    grid-column: 1 / span 7;
  }

  .page-scenarios .s-hero-title {
    margin-left: calc(var(--gutter) * -1);
  }

  .page-scenarios .s-hero-figures {
    grid-column: 9 / span 4;
  }
}

/* ---------- 月份刻度带 ---------- */
.page-scenarios .s-ticks {
  position: relative;
  z-index: 2;
  border-top: var(--border-thin) solid var(--color-contrast-line);
  background: var(--color-contrast-surface);
  padding-block: var(--space-3);
}

.page-scenarios .s-ticks-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2) var(--space-3);
}

.page-scenarios .s-ticks-cap,
.page-scenarios .s-ticks-latest {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-contrast-ink);
  opacity: 0.66;
}

.page-scenarios .s-ticks-track {
  flex: 1 1 100%;
  order: 3;
  height: 20px;
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
  background-image: repeating-linear-gradient(
    to right,
    var(--color-contrast-line) 0 1px,
    transparent 1px calc(100% / 34)
  );
}

@media (min-width: 900px) {
  .page-scenarios .s-ticks-track {
    flex: 1 1 auto;
    order: 0;
  }
}

/* ==========================================================
   B. 归档口径
   ========================================================== */
.page-scenarios .s-scope {
  background: var(--color-surface-alt);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-scenarios .s-scope-grid {
  display: grid;
  gap: var(--space-6);
}

.page-scenarios .s-scope-title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
}

.page-scenarios .s-scope-note {
  margin: 0;
  padding-left: var(--space-3);
  border-left: 2px solid var(--color-primary);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-scenarios .s-scope-lede {
  margin: 0;
  max-width: 62ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-scenarios .s-rules {
  position: relative;
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-scenarios .s-rule {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  padding-block: var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-scenarios .s-rule-no {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-primary);
  padding-top: 4px;
}

.page-scenarios .s-rule-title {
  margin: 0 0 4px;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.3;
  letter-spacing: var(--tracking-heading);
}

.page-scenarios .s-rule-body p {
  margin: 0;
  max-width: 62ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

@media (min-width: 900px) {
  .page-scenarios .s-scope-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--gutter);
  }

  .page-scenarios .s-scope-head {
    grid-column: 1 / span 4;
  }

  .page-scenarios .s-scope-body {
    grid-column: 6 / span 7;
  }
}

/* ==========================================================
   C. 阶段专题
   ========================================================== */
.page-scenarios .s-stages {
  background: var(--color-surface);
}

.page-scenarios .s-stages-head {
  max-width: 64ch;
  margin-bottom: var(--space-8);
}

.page-scenarios .s-stages-title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
}

.page-scenarios .s-stages-lede {
  margin: 0;
  max-width: 62ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

@media (min-width: 900px) {
  .page-scenarios .s-stages-title {
    font-size: var(--text-3xl);
  }
}

/* 阶段块 */
.page-scenarios .s-stage {
  position: relative;
  padding: var(--space-6) var(--space-4) var(--space-6) var(--space-6);
  margin-bottom: var(--space-6);
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface);
}

.page-scenarios .s-stage-rail {
  position: absolute;
  left: 0;
  top: var(--space-6);
  width: 2px;
  height: 46px;
  background: var(--color-primary);
}

.page-scenarios .s-stage-tag {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-primary);
}

.page-scenarios .s-stage-title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1.3;
  letter-spacing: var(--tracking-heading);
}

.page-scenarios .s-stage-lede {
  margin: 0 0 var(--space-4);
  max-width: 58ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-scenarios .s-stage-points {
  list-style: none;
  margin: 0 0 var(--space-4);
  padding: 0;
  max-width: 58ch;
}

.page-scenarios .s-stage-points li {
  position: relative;
  padding-left: var(--space-4);
  margin-bottom: var(--space-2);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-scenarios .s-stage-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: calc(var(--leading-body) * 0.55em);
  width: 8px;
  height: 1px;
  background: var(--color-primary);
}

.page-scenarios .s-stage-rel {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-scenarios .s-stage-rel-cap {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}

.page-scenarios .s-rel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-scenarios .s-rel-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-1) var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-left: 2px solid var(--color-primary);
  background: color-mix(in srgb, var(--color-primary-soft) 55%, transparent);
}

.page-scenarios .s-rel-month {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-scenarios .s-rel-text {
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink);
}

.page-scenarios .s-stage-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
  padding: var(--space-2) var(--space-3);
  border: var(--border-thin) solid var(--color-primary);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-primary);
  text-decoration: none;
  transition: background-color 0.18s var(--ease-out), color 0.18s var(--ease-out);
}

.page-scenarios .s-stage-link:hover,
.page-scenarios .s-stage-link:focus-visible {
  background: var(--color-primary);
  color: var(--color-primary-ink);
}

/* 阶段底色：相邻必须不同 */
.page-scenarios .s-stage--a { background: var(--color-surface-alt); }
.page-scenarios .s-stage--b { background: var(--color-surface-deep); }
.page-scenarios .s-stage--c { background: var(--color-surface); }
.page-scenarios .s-stage--d {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
}
.page-scenarios .s-stage--e {
  background: var(--color-contrast-surface);
  border-color: var(--color-contrast-line);
  color: var(--color-contrast-ink);
}
.page-scenarios .s-stage--e .s-stage-title { color: var(--color-contrast-ink); }
.page-scenarios .s-stage--e .s-stage-tag { color: var(--color-contrast-accent); }
.page-scenarios .s-stage--e .s-stage-rail { background: var(--color-contrast-accent); }
.page-scenarios .s-stage--e .s-stage-lede,
.page-scenarios .s-stage--e .s-stage-points li { color: var(--color-contrast-ink); opacity: 0.85; }
.page-scenarios .s-stage--e .s-stage-points li::before { background: var(--color-contrast-accent); }
.page-scenarios .s-stage--e .s-stage-rel { border-top-color: var(--color-contrast-line); }
.page-scenarios .s-stage--e .s-stage-rel-cap { color: var(--color-contrast-ink); opacity: 0.6; }
.page-scenarios .s-stage--e .s-rel-item {
  border-left-color: var(--color-contrast-accent);
  background: color-mix(in srgb, var(--color-contrast-line) 40%, transparent);
}
.page-scenarios .s-stage--e .s-rel-month { color: var(--color-contrast-ink); opacity: 0.6; }
.page-scenarios .s-stage--e .s-rel-text { color: var(--color-contrast-ink); }
.page-scenarios .s-stage--e .s-stage-link {
  border-color: var(--color-contrast-accent);
  color: var(--color-contrast-accent);
}
.page-scenarios .s-stage--e .s-stage-link:hover,
.page-scenarios .s-stage--e .s-stage-link:focus-visible {
  background: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
}

/* 桌面：块面尺寸与位置错落 */
@media (min-width: 900px) {
  .page-scenarios .s-stage {
    padding: var(--space-8) var(--space-6) var(--space-8) calc(var(--space-8) + var(--space-3));
  }

  .page-scenarios .s-stage--a { width: 100%; }
  .page-scenarios .s-stage--b { width: 70%; margin-left: 30%; }
  .page-scenarios .s-stage--c { width: 56%; }
  .page-scenarios .s-stage--d { width: 86%; margin-left: 14%; }
  .page-scenarios .s-stage--e { width: 64%; margin-left: 24%; }

  .page-scenarios .s-stage-rel {
    display: grid;
    grid-template-columns: 132px minmax(0, 1fr);
    gap: var(--space-3);
    align-items: start;
  }

  .page-scenarios .s-stage-rel-cap {
    margin: 0;
    padding-top: var(--space-2);
  }
}

/* ---------- 阶段之间的图文咬合 ---------- */
.page-scenarios .s-break {
  position: relative;
  z-index: 2;
  margin: 0 0 var(--space-6);
  border: var(--border-thin) solid var(--color-contrast-line);
  background: var(--color-contrast-surface);
}

.page-scenarios .s-break img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 900 / 620;
  object-fit: cover;
  opacity: 0.9;
}

.page-scenarios .s-break--b img {
  aspect-ratio: 860 / 580;
}

.page-scenarios .s-break-cap {
  display: block;
  padding: var(--space-2) var(--space-3);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  line-height: 1.7;
  color: var(--color-contrast-ink);
  opacity: 0.72;
}

@media (min-width: 900px) {
  .page-scenarios .s-break--a {
    width: 64%;
    margin-left: auto;
    margin-right: calc(var(--gutter) * -1);
    margin-top: calc(var(--space-8) * -1);
    margin-bottom: calc(var(--space-6) * -0.4);
  }

  .page-scenarios .s-break--b {
    width: 54%;
    margin-left: calc(var(--gutter) * -1);
    margin-top: calc(var(--space-8) * -0.6);
    margin-bottom: calc(var(--space-6) * -0.2);
  }
}

/* ==========================================================
   D. 相关条目索引
   ========================================================== */
.page-scenarios .s-index {
  position: relative;
  overflow: hidden;
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-scenarios .s-index-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-scenarios .s-index-bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.14;
}

.page-scenarios .s-index-inner {
  position: relative;
  z-index: 1;
}

.page-scenarios .s-index-head {
  max-width: 62ch;
}

.page-scenarios .s-index-head .s-chapter {
  color: var(--color-contrast-ink);
  opacity: 0.62;
}

.page-scenarios .s-index-head .s-chapter-label {
  color: var(--color-contrast-ink);
}

.page-scenarios .s-index-title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.page-scenarios .s-index-lede {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  opacity: 0.82;
}

@media (min-width: 900px) {
  .page-scenarios .s-index-title {
    font-size: var(--text-3xl);
  }
}

.page-scenarios .s-index-cols {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-8);
}

.page-scenarios .s-entries {
  list-style: none;
  margin: 0;
  padding: var(--space-2) var(--space-4);
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface);
  color: var(--color-ink);
}

.page-scenarios .s-entries--b {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
}

.page-scenarios .s-entry {
  padding-block: var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-scenarios .s-entries--b .s-entry {
  border-bottom-color: color-mix(in srgb, var(--color-primary) 35%, transparent);
}

.page-scenarios .s-entry:last-child {
  border-bottom: 0;
}

.page-scenarios .s-entry-head {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
}

.page-scenarios .s-entry-no {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.page-scenarios .s-entry-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  line-height: 1.45;
  letter-spacing: var(--tracking-heading);
}

.page-scenarios .s-entry-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 2px var(--space-3);
  margin: var(--space-2) 0 0;
  padding-left: calc(var(--space-3) + var(--space-2));
}

.page-scenarios .s-entry-pair {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.page-scenarios .s-entry-pair dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-scenarios .s-entry-pair dd {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-soft);
}

.page-scenarios .s-entry-pair dd.mono {
  font-family: var(--font-mono);
  color: var(--color-ink);
}

@media (min-width: 900px) {
  .page-scenarios .s-index-cols {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--gutter);
    align-items: start;
  }

  .page-scenarios .s-entries--a {
    grid-column: 1 / span 6;
  }

  .page-scenarios .s-entries--b {
    grid-column: 8 / span 5;
    margin-top: calc(var(--space-8) * 1.6);
  }
}

/* ==========================================================
   E. 延伸入口
   ========================================================== */
.page-scenarios .s-next {
  background: var(--color-surface-alt);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-scenarios .s-next-head {
  max-width: 58ch;
  margin-bottom: var(--space-6);
}

.page-scenarios .s-next-title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
}

.page-scenarios .s-next-lede {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-scenarios .s-next-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-scenarios .s-next-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 2px var(--space-3);
  padding: var(--space-3) var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-line);
  text-decoration: none;
  color: var(--color-ink);
  transition: background-color 0.18s var(--ease-out);
}

.page-scenarios .s-next-item:hover,
.page-scenarios .s-next-item:focus-visible {
  background: var(--color-highlight);
}

.page-scenarios .s-next-num {
  grid-row: 1 / span 2;
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.page-scenarios .s-next-name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.3;
  letter-spacing: var(--tracking-heading);
}

.page-scenarios .s-next-desc {
  max-width: 56ch;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-muted);
  transition: color 0.18s var(--ease-out);
}

.page-scenarios .s-next-item:hover .s-next-desc,
.page-scenarios .s-next-item:focus-visible .s-next-desc {
  color: var(--color-ink-soft);
}

@media (min-width: 760px) {
  .page-scenarios .s-next-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--gutter);
  }
}

/* ==========================================================
   F. 交互与动效降级
   ========================================================== */
.page-scenarios [data-reveal] {
  opacity: 1;
}

@media (prefers-reduced-motion: reduce) {
  .page-scenarios .s-stage-link,
  .page-scenarios .s-next-item,
  .page-scenarios .s-next-desc {
    transition: none;
  }
}
</main>

/* ==========================================================
   活动周期档案 / page-scenarios
   移动优先；所有选择器限定在 .page-scenarios 作用域内
   ========================================================== */

.page-scenarios {
  background: var(--color-surface);
  color: var(--color-ink);
  overflow-x: clip;
}

.page-scenarios .s-section-pad {
  padding-block: var(--section-y);
}

/* ---------- 编号章节头 ---------- */
.page-scenarios .s-chapter {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-ink-muted);
}

.page-scenarios .s-chapter-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 30px;
  height: 20px;
  padding-inline: var(--space-1);
  background: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
}

.page-scenarios .s-chapter-label {
  color: var(--color-ink-soft);
}

/* ==========================================================
   A. 首屏
   ========================================================== */
.page-scenarios .s-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-scenarios .s-hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.page-scenarios .s-hero-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-width: 100%;
  opacity: 0.34;
}

.page-scenarios .s-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
}

.page-scenarios .s-hero-slab {
  position: absolute;
  z-index: 1;
  display: block;
  pointer-events: none;
}

.page-scenarios .s-hero-slab--accent {
  top: -16%;
  right: -28%;
  width: 94%;
  height: 74%;
  background: var(--color-accent);
  clip-path: polygon(36% 0, 100% 0, 100% 100%, 0 100%);
  opacity: 0.9;
}

.page-scenarios .s-hero-slab--dark {
  right: -6%;
  bottom: -32%;
  width: 68%;
  height: 70%;
  background: var(--color-contrast-surface);
  border-left: var(--border-thin) solid var(--color-contrast-line);
  clip-path: polygon(0 8%, 100% 28%, 100% 100%, 0 100%);
}

.page-scenarios .s-hero-inner {
  position: relative;
  z-index: 2;
  padding-block: calc(var(--section-y) * 0.9) var(--section-y);
}

.page-scenarios .s-hero-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-contrast-ink);
  opacity: 0.68;
}

.page-scenarios .s-hero-crumb a {
  color: inherit;
  text-decoration: none;
  border-bottom: var(--border-thin) solid currentColor;
}

.page-scenarios .s-hero-crumb a:hover,
.page-scenarios .s-hero-crumb a:focus-visible {
  opacity: 1;
  color: var(--color-contrast-accent);
}

.page-scenarios .s-hero-grid {
  display: grid;
  gap: var(--space-6);
}

.page-scenarios .s-hero-eyebrow {
  margin: 0 0 var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  color: var(--color-contrast-accent);
}

.page-scenarios .s-hero-title {
  margin: 0 0 var(--space-4);
  max-width: 12ch;
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.page-scenarios .s-hero-lede {
  margin: 0;
  max-width: 48ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  opacity: 0.86;
}

.page-scenarios .s-hero-figures {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  padding: var(--space-4);
  border: var(--border-thin) solid var(--color-contrast-line);
  background: color-mix(in srgb, var(--color-contrast-surface) 82%, transparent);
}

.page-scenarios .s-figure {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-bottom: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.page-scenarios .s-figure:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-scenarios .s-figure-num {
  font-family: var(--font-heading);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-accent);
}

.page-scenarios .s-figure-cap {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-contrast-ink);
  opacity: 0.72;
}

@media (min-width: 600px) and (max-width: 899px) {
  .page-scenarios .s-hero-figures {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-scenarios .s-figure {
    padding-bottom: 0;
    padding-right: var(--space-3);
    border-bottom: 0;
    border-right: var(--border-thin) solid var(--color-contrast-line);
  }

  .page-scenarios .s-figure:last-child {
    padding-right: 0;
    border-right: 0;
  }
}

@media (min-width: 900px) {
  .page-scenarios .s-hero-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--gutter);
    align-items: end;
  }

  .page-scenarios .s-hero-copy {
    grid-column: 1 / span 7;
  }

  .page-scenarios .s-hero-title {
    margin-left: calc(var(--gutter) * -1);
  }

  .page-scenarios .s-hero-figures {
    grid-column: 9 / span 4;
  }
}

/* ---------- 月份刻度带 ---------- */
.page-scenarios .s-ticks {
  position: relative;
  z-index: 2;
  padding-block: var(--space-3);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  background: var(--color-contrast-surface);
}

.page-scenarios .s-ticks-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2) var(--space-3);
}

.page-scenarios .s-ticks-cap,
.page-scenarios .s-ticks-latest {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-contrast-ink);
  opacity: 0.68;
}

.page-scenarios .s-ticks-track {
  order: 3;
  flex: 1 1 100%;
  height: 20px;
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
  background-image: repeating-linear-gradient(
    to right,
    var(--color-contrast-line) 0 1px,
    transparent 1px calc(100% / 34)
  );
}

@media (min-width: 900px) {
  .page-scenarios .s-ticks-track {
    order: 0;
    flex: 1 1 auto;
  }
}

/* ==========================================================
   B. 归档口径
   ========================================================== */
.page-scenarios .s-scope {
  padding-block: var(--section-y);
  background: var(--color-surface-alt);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-scenarios .s-scope-grid {
  display: grid;
  gap: var(--space-6);
}

.page-scenarios .s-scope-title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
}

.page-scenarios .s-scope-note {
  margin: 0;
  padding-left: var(--space-3);
  border-left: 2px solid var(--color-primary);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  line-height: 1.8;
  color: var(--color-ink-muted);
}

.page-scenarios .s-scope-lede {
  margin: 0;
  max-width: 62ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-scenarios .s-rules {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-scenarios .s-rule {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  padding-block: var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-scenarios .s-rule-no {
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.page-scenarios .s-rule-title {
  margin: 0 0 4px;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.32;
  letter-spacing: var(--tracking-heading);
}

.page-scenarios .s-rule-body p {
  margin: 0;
  max-width: 62ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

@media (min-width: 900px) {
  .page-scenarios .s-scope {
    padding-block: var(--section-y-lg);
  }

  .page-scenarios .s-scope-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--gutter);
  }

  .page-scenarios .s-scope-head {
    grid-column: 1 / span 4;
    position: sticky;
    top: var(--space-8);
    align-self: start;
  }

  .page-scenarios .s-scope-body {
    grid-column: 6 / span 7;
  }
}

/* ==========================================================
   C. 阶段专题
   ========================================================== */
.page-scenarios .s-stages {
  padding-block: var(--section-y);
  background: var(--color-surface);
}

.page-scenarios .s-stages-head {
  max-width: 64ch;
  margin-bottom: var(--space-8);
}

.page-scenarios .s-stages-title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
}

.page-scenarios .s-stages-lede {
  margin: 0;
  max-width: 62ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-scenarios .s-stage {
  position: relative;
  margin-bottom: var(--space-6);
  padding: var(--space-6) var(--space-4) var(--space-6) var(--space-6);
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface);
}

.page-scenarios .s-stage-rail {
  position: absolute;
  left: 0;
  top: var(--space-6);
  width: 2px;
  height: 46px;
  background: var(--color-primary);
}

.page-scenarios .s-stage-tag {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-primary);
}

.page-scenarios .s-stage-title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1.32;
  letter-spacing: var(--tracking-heading);
}

.page-scenarios .s-stage-lede {
  margin: 0 0 var(--space-4);
  max-width: 58ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-scenarios .s-stage-points {
  list-style: none;
  margin: 0 0 var(--space-4);
  padding: 0;
  max-width: 58ch;
}

.page-scenarios .s-stage-points li {
  position: relative;
  margin-bottom: var(--space-2);
  padding-left: var(--space-4);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-scenarios .s-stage-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 9px;
  height: 1px;
  background: var(--color-primary);
}

.page-scenarios .s-stage-rel {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-scenarios .s-stage-rel-cap {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}

.page-scenarios .s-rel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-scenarios .s-rel-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-1) var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-left: 2px solid var(--color-primary);
  background: color-mix(in srgb, var(--color-primary-soft) 60%, transparent);
}

.page-scenarios .s-rel-month {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-scenarios .s-rel-text {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink);
}

.page-scenarios .s-stage-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
  padding: var(--space-2) var(--space-3);
  border: var(--border-thin) solid var(--color-primary);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-primary);
  text-decoration: none;
  transition: background-color 0.18s var(--ease-out), color 0.18s var(--ease-out);
}

.page-scenarios .s-stage-link:hover,
.page-scenarios .s-stage-link:focus-visible {
  background: var(--color-primary);
  color: var(--color-primary-ink);
}

/* 相邻阶段底色必须不同 */
.page-scenarios .s-stage--a {
  background: var(--color-surface-alt);
}

.page-scenarios .s-stage--b {
  background: var(--color-surface-deep);
}

.page-scenarios .s-stage--c {
  background: var(--color-surface);
}

.page-scenarios .s-stage--d {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
}

.page-scenarios .s-stage--e {
  background: var(--color-contrast-surface);
  border-color: var(--color-contrast-line);
  color: var(--color-contrast-ink);
}

.page-scenarios .s-stage--e .s-stage-title {
  color: var(--color-contrast-ink);
}

.page-scenarios .s-stage--e .s-stage-tag {
  color: var(--color-contrast-accent);
}

.page-scenarios .s-stage--e .s-stage-rail {
  background: var(--color-contrast-accent);
}

.page-scenarios .s-stage--e .s-stage-lede,
.page-scenarios .s-stage--e .s-stage-points li {
  color: var(--color-contrast-ink);
  opacity: 0.86;
}

.page-scenarios .s-stage--e .s-stage-points li::before {
  background: var(--color-contrast-accent);
}

.page-scenarios .s-stage--e .s-stage-rel {
  border-top-color: var(--color-contrast-line);
}

.page-scenarios .s-stage--e .s-stage-rel-cap {
  color: var(--color-contrast-ink);
  opacity: 0.62;
}

.page-scenarios .s-stage--e .s-rel-item {
  border-left-color: var(--color-contrast-accent);
  background: color-mix(in srgb, var(--color-contrast-line) 45%, transparent);
}

.page-scenarios .s-stage--e .s-rel-month {
  color: var(--color-contrast-ink);
  opacity: 0.62;
}

.page-scenarios .s-stage--e .s-rel-text {
  color: var(--color-contrast-ink);
}

.page-scenarios .s-stage--e .s-stage-link {
  border-color: var(--color-contrast-accent);
  color: var(--color-contrast-accent);
}

.page-scenarios .s-stage--e .s-stage-link:hover,
.page-scenarios .s-stage--e .s-stage-link:focus-visible {
  background: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
}

@media (min-width: 900px) {
  .page-scenarios .s-stages {
    padding-block: var(--section-y-lg);
  }

  .page-scenarios .s-stages-title {
    font-size: var(--text-3xl);
  }

  .page-scenarios .s-stage {
    padding: var(--space-8) var(--space-6) var(--space-8) calc(var(--space-8) + var(--space-3));
  }

  .page-scenarios .s-stage--a { width: 100%; }
  .page-scenarios .s-stage--b { width: 70%; margin-left: 30%; }
  .page-scenarios .s-stage--c { width: 56%; }
  .page-scenarios .s-stage--d { width: 86%; margin-left: 14%; }
  .page-scenarios .s-stage--e { width: 64%; margin-left: 24%; }

  .page-scenarios .s-stage-rel {
    display: grid;
    grid-template-columns: 128px minmax(0, 1fr);
    gap: var(--space-3);
    align-items: start;
  }

  .page-scenarios .s-stage-rel-cap {
    margin: 0;
    padding-top: var(--space-2);
  }
}

/* ---------- 阶段之间的图文咬合 ---------- */
.page-scenarios .s-break {
  position: relative;
  z-index: 2;
  margin: 0 0 var(--space-6);
  border: var(--border-thin) solid var(--color-contrast-line);
  background: var(--color-contrast-surface);
}

.page-scenarios .s-break img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 900 / 620;
  object-fit: cover;
  opacity: 0.92;
}

.page-scenarios .s-break--b img {
  aspect-ratio: 860 / 580;
}

.page-scenarios .s-break-cap {
  display: block;
  padding: var(--space-2) var(--space-3);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  line-height: 1.75;
  color: var(--color-contrast-ink);
  opacity: 0.74;
}

@media (min-width: 900px) {
  .page-scenarios .s-break--a {
    width: 64%;
    margin-left: auto;
    margin-right: calc(var(--gutter) * -1);
    margin-top: calc(var(--space-8) * -1);
    margin-bottom: calc(var(--space-6) * -0.5);
  }

  .page-scenarios .s-break--b {
    width: 54%;
    margin-left: calc(var(--gutter) * -1);
    margin-top: calc(var(--space-8) * -0.5);
    margin-bottom: calc(var(--space-6) * -0.2);
  }
}

/* ==========================================================
   D. 相关条目索引
   ========================================================== */
.page-scenarios .s-index {
  position: relative;
  overflow: hidden;
  padding-block: var(--section-y);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-scenarios .s-index-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-scenarios .s-index-bg img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.15;
}

.page-scenarios .s-index-inner {
  position: relative;
  z-index: 1;
}

.page-scenarios .s-index-head {
  max-width: 62ch;
}

.page-scenarios .s-index-head .s-chapter {
  color: var(--color-contrast-ink);
  opacity: 0.66;
}

.page-scenarios .s-index-head .s-chapter-label {
  color: var(--color-contrast-ink);
}

.page-scenarios .s-index-title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.page-scenarios .s-index-lede {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  opacity: 0.84;
}

.page-scenarios .s-index-cols {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-8);
}

.page-scenarios .s-entries {
  list-style: none;
  margin: 0;
  padding: var(--space-2) var(--space-4);
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface);
  color: var(--color-ink);
}

.page-scenarios .s-entries--b {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
}

.page-scenarios .s-entry {
  padding-block: var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-scenarios .s-entries--b .s-entry {
  border-bottom-color: color-mix(in srgb, var(--color-primary) 34%, transparent);
}

.page-scenarios .s-entry:last-child {
  border-bottom: 0;
}

.page-scenarios .s-entry-head {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
}

.page-scenarios .s-entry-no {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.page-scenarios .s-entry-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  line-height: 1.48;
  letter-spacing: var(--tracking-heading);
}

.page-scenarios .s-entry-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 2px var(--space-3);
  margin: var(--space-2) 0 0;
  padding-left: calc(var(--space-3) + var(--space-2));
}

.page-scenarios .s-entry-pair {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.page-scenarios .s-entry-pair dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-scenarios .s-entry-pair dd {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.65;
  color: var(--color-ink-soft);
}

.page-scenarios .s-entry-pair dd.mono {
  font-family: var(--font-mono);
  color: var(--color-ink);
}

@media (min-width: 900px) {
  .page-scenarios .s-index {
    padding-block: var(--section-y-lg);
  }

  .page-scenarios .s-index-title {
    font-size: var(--text-3xl);
  }

  .page-scenarios .s-index-cols {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--gutter);
    align-items: start;
  }

  .page-scenarios .s-entries--a {
    grid-column: 1 / span 6;
  }

  .page-scenarios .s-entries--b {
    grid-column: 8 / span 5;
    margin-top: calc(var(--space-8) * 1.6);
  }
}

/* ==========================================================
   E. 延伸入口
   ========================================================== */
.page-scenarios .s-next {
  padding-block: var(--section-y);
  border-top: var(--border-thin) solid var(--color-line);
  background: var(--color-surface-alt);
}

.page-scenarios .s-next-head {
  max-width: 58ch;
  margin-bottom: var(--space-6);
}

.page-scenarios .s-next-title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
}

.page-scenarios .s-next-lede {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-scenarios .s-next-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-scenarios .s-next-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 2px var(--space-3);
  padding: var(--space-3) var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-line);
  text-decoration: none;
  color: var(--color-ink);
  transition: background-color 0.18s var(--ease-out);
}

.page-scenarios .s-next-item:hover,
.page-scenarios .s-next-item:focus-visible {
  background: var(--color-highlight);
}

.page-scenarios .s-next-num {
  grid-row: 1 / span 2;
  padding-top: 6px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.page-scenarios .s-next-name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.32;
  letter-spacing: var(--tracking-heading);
}

.page-scenarios .s-next-desc {
  max-width: 56ch;
  font-size: var(--text-sm);
  line-height: 1.72;
  color: var(--color-ink-muted);
  transition: color 0.18s var(--ease-out);
}

.page-scenarios .s-next-item:hover .s-next-desc,
.page-scenarios .s-next-item:focus-visible .s-next-desc {
  color: var(--color-ink-soft);
}

@media (min-width: 760px) {
  .page-scenarios .s-next-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--gutter);
  }
}

@media (min-width: 900px) {
  .page-scenarios .s-next {
    padding-block: var(--section-y-lg);
  }
}

/* ==========================================================
   F. 动效降级
   ========================================================== */
@media (prefers-reduced-motion: reduce) {
  .page-scenarios .s-stage-link,
  .page-scenarios .s-next-item,
  .page-scenarios .s-next-desc {
    transition: none;
  }
}