.page-strength {
  display: block;
}

/* ============ 首屏 ============ */
.page-strength .st-hero {
  padding-block: var(--space-6) var(--section-y);
}

.page-strength .st-hero__title {
  margin: var(--space-4) 0 0;
  max-width: 12ch;
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.015em;
  color: var(--color-ink);
}

.page-strength .st-hero__lede {
  margin: var(--space-4) 0 0;
  max-width: var(--measure);
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-strength .st-hero__meta {
  margin: var(--space-3) 0 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
}

/* 四个数字面板（全站浅底出现得最重的一处） */
.page-strength .st-metrics {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-block-start: var(--space-8);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-strength .st-metric {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-1);
  padding: var(--space-6) var(--space-4);
  text-decoration: none;
  border-block-start: 1px dotted var(--color-contrast-line);
  border-inline-start: 1px dotted var(--color-contrast-line);
  transition: background-color 140ms ease;
}

.page-strength .st-metric:hover,
.page-strength .st-metric:focus-visible {
  background-color: color-mix(in srgb, var(--color-contrast-accent) 9%, var(--color-contrast-surface));
}

.page-strength .st-metric__num {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: var(--text-figure);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-contrast-accent);
  font-variant-numeric: tabular-nums;
  box-shadow: inset 0 -2px 0 var(--color-contrast-accent);
}

.page-strength .st-metric__pct {
  font-size: 0.6em;
}

.page-strength .st-metric__unit {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
}

.page-strength .st-metric__cap {
  flex-basis: 100%;
  margin-block-start: var(--space-2);
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-contrast-ink);
}

.page-strength .st-metrics__note {
  margin-block-start: var(--space-4);
  max-width: 80ch;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.7;
  color: var(--color-ink-muted);
}

/* 横向刻度线 */
.page-strength .st-scale {
  height: 10px;
  margin-block-start: var(--space-6);
  background-image: repeating-linear-gradient(
    to right,
    var(--color-line) 0,
    var(--color-line) 1px,
    transparent 1px,
    transparent 36px
  );
  background-size: 100% 100%;
  background-repeat: no-repeat;
}

.page-strength .st-hero__shot {
  margin: var(--space-6) 0 0;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-strength .st-hero__shot img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-strength .st-cap {
  margin: var(--space-2) 0 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.02em;
  color: var(--color-ink-muted);
}

/* ============ 通用小标题 ============ */
.page-strength .st-head {
  padding-block-end: var(--space-4);
  margin-block-end: var(--space-6);
  border-block-end: 1px dotted var(--color-line);
}

.page-strength .st-h2 {
  margin: var(--space-3) 0 0;
  max-width: 26ch;
  font-family: var(--font-heading);
  font-size: clamp(var(--text-2xl), 3.4vw, var(--text-3xl));
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-strength .st-head__note {
  margin-block-start: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

/* ============ 六段实证 ============ */
.page-strength .st-cases {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.page-strength .st-case {
  padding-block: var(--space-6) var(--space-8);
  padding-inline: 0;
  border-block-start: 1px dotted var(--color-line);
}

.page-strength .st-case--lift {
  padding-block-start: var(--space-8);
}

.page-strength .st-case:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 4px;
}

.page-strength .st-case__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.page-strength .st-case__idx {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-strength .st-case__title {
  margin: var(--space-3) 0 var(--space-4);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1.35;
  color: var(--color-ink);
}

.page-strength .st-steps {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-strength .st-step {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: var(--space-3);
  padding-block: var(--space-3);
  border-block-start: 1px dotted var(--color-line);
}

.page-strength .st-step:first-child {
  border-block-start: 0;
  padding-block-start: 0;
}

.page-strength .st-step__key {
  padding-block-start: 4px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-strength .st-step__val {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-strength .st-step--result .st-step__key {
  color: var(--color-primary);
}

.page-strength .st-step--result .st-step__val {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-3);
}

.page-strength .st-step__text {
  flex: 1 1 16ch;
  min-width: 0;
}

.page-strength .st-step__num {
  flex: 0 0 auto;
  padding-block-end: 2px;
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: 800;
  line-height: 1.1;
  white-space: nowrap;
  color: var(--color-ink);
  box-shadow: inset 0 -2px 0 var(--color-primary);
  font-variant-numeric: tabular-nums;
}

.page-strength .st-case__more {
  margin: 0;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  padding-block: 0;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-soft);
  border-block-start: 1px dotted transparent;
  transition: max-height 220ms ease, opacity 180ms ease, padding-block 220ms ease,
    border-color 180ms ease;
}

.page-strength .st-case:hover .st-case__more,
.page-strength .st-case:focus .st-case__more,
.page-strength .st-case:focus-within .st-case__more {
  max-height: 200px;
  opacity: 1;
  padding-block: var(--space-3) 0;
  border-block-start-color: var(--color-line);
}

/* 案例区配图 */
.page-strength .st-shot {
  margin: 0;
  padding-block: var(--space-6);
  border-block-start: 1px dotted var(--color-line);
}

.page-strength .st-shot img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.page-strength .st-shot--tall img {
  max-width: 260px;
  aspect-ratio: 2 / 3;
  object-fit: cover;
}

.page-strength .st-shot--band img {
  max-width: 860px;
}

.page-strength .st-shot--wide img {
  max-width: 1080px;
}

/* ============ 三类来客 ============ */
.page-strength .st-tabbar {
  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-block-end: var(--space-3);
  border-block-end: 1px dotted var(--color-line);
  -webkit-overflow-scrolling: touch;
}

.page-strength .st-tabbar .tab {
  flex: 0 0 auto;
  scroll-snap-align: start;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.02em;
}

.page-strength .st-panel-body {
  padding-block: var(--space-6);
}

.page-strength .st-faq {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-strength .st-faq__row {
  display: grid;
  gap: var(--space-1);
  padding-block: var(--space-4);
  border-block-start: 1px dotted var(--color-line);
}

.page-strength .st-faq__row:first-child {
  border-block-start: 0;
  padding-block-start: 0;
}

.page-strength .st-faq__row dt {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-ink);
}

.page-strength .st-faq__row dd {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-strength .st-panel-link {
  margin-block-start: var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-strength .st-panel-link a {
  color: var(--color-primary);
  text-decoration: none;
  border-block-end: 1px dotted var(--color-primary);
  padding-block-end: 1px;
}

.page-strength .st-panel-link a:hover,
.page-strength .st-panel-link a:focus-visible {
  color: var(--color-focus);
  border-block-end-color: var(--color-focus);
}

/* ============ 支撑体系 ============ */
.page-strength .st-support {
  display: grid;
  gap: var(--space-8);
}

.page-strength .st-support .prose {
  margin-block-start: var(--space-4);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-strength .st-pillars {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-strength .st-pillar {
  position: relative;
  padding: var(--space-4) 0 var(--space-4) 56px;
  border-block-start: 1px dotted var(--color-line);
}

.page-strength .st-pillar__num {
  position: absolute;
  inset-inline-start: 0;
  inset-block-start: calc(var(--space-4) + 4px);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.page-strength .st-pillar__title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-ink);
}

.page-strength .st-pillar p {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-strength .st-support__aside figure {
  margin: 0;
}

.page-strength .st-support__aside img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-strength .st-support__note {
  margin-block-start: var(--space-4);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

.page-strength .st-support__link {
  margin-block-start: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

.page-strength .st-support__link a {
  color: var(--color-primary);
  text-decoration: none;
  border-block-end: 1px dotted var(--color-primary);
}

.page-strength .st-support__link a:hover,
.page-strength .st-support__link a:focus-visible {
  color: var(--color-focus);
  border-block-end-color: var(--color-focus);
}

/* ============ 出口 ============ */
.page-strength .st-next__lede {
  margin: var(--space-4) 0 0;
  max-width: var(--measure);
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-strength .st-exits {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-block-start: var(--space-6);
}

.page-strength .st-exit {
  display: block;
  padding: var(--space-6);
  border: 1px dotted var(--color-line);
  border-radius: var(--radius-md);
  background-color: var(--color-surface-alt);
  text-decoration: none;
  transition: border-color 140ms ease, background-color 140ms ease, transform 140ms ease;
}

.page-strength .st-exit:hover,
.page-strength .st-exit:focus-visible {
  border-color: var(--color-primary);
  background-color: var(--color-highlight);
  transform: translateY(-2px);
}

.page-strength .st-exit__tag {
  display: inline-block;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-primary);
  border: 1px dotted var(--color-primary);
  border-radius: var(--radius-sm);
}

.page-strength .st-exit__title {
  display: block;
  margin-block: var(--space-3) var(--space-2);
  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-strength .st-exit__desc {
  display: block;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ============ 响应式 ============ */
@media (min-width: 640px) {
  .page-strength .st-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-strength .st-exits {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-6);
  }
}

@media (min-width: 820px) {
  .page-strength .st-cases {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-strength .st-case {
    padding-inline: var(--space-4);
  }

  .page-strength .st-shot {
    padding-inline: var(--space-4);
  }

  .page-strength .st-shot--band,
  .page-strength .st-shot--wide {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .page-strength .st-shot--band img,
  .page-strength .st-shot--wide img {
    width: 100%;
  }

  .page-strength .st-faq__row {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.5fr);
    gap: var(--space-6);
    align-items: baseline;
  }
}

@media (min-width: 1000px) {
  .page-strength .st-support {
    grid-template-columns: minmax(0, 1.65fr) minmax(280px, 0.9fr);
    gap: var(--space-8);
    align-items: start;
  }
}

/* 触屏设备上补充细节直接展示，不依赖悬停 */
@media (hover: none) {
  .page-strength .st-case__more {
    max-height: none;
    opacity: 1;
    padding-block: var(--space-3) 0;
    border-block-start-color: var(--color-line);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-strength *,
  .page-strength *::before,
  .page-strength *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .page-strength .st-exit:hover,
  .page-strength .st-exit:focus-visible {
    transform: none;
  }
}