.page-strength {
  --sw-node: 46px;
  --sw-glow-soft: 0 0 22px color-mix(in srgb, var(--color-accent) 14%, transparent);
  --sw-glow-strong: 0 0 30px color-mix(in srgb, var(--color-accent) 26%, transparent);
}

.page-strength [id] {
  scroll-margin-top: 96px;
}

/* ============ 首屏 ============ */

.page-strength .journey-hero {
  position: relative;
  padding-block: var(--space-6) var(--space-8);
  background:
    radial-gradient(120% 90% at 8% -20%, color-mix(in srgb, var(--color-primary) 24%, transparent) 0%, transparent 62%),
    linear-gradient(180deg, var(--color-surface) 0%, var(--color-surface-alt) 100%);
  border-bottom: var(--border-thin) solid var(--color-line);
  overflow: hidden;
}

.page-strength .journey-hero .breadcrumb {
  margin-bottom: var(--space-6);
}

.page-strength .journey-hero__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  color: var(--color-primary);
}

.page-strength .journey-hero__title {
  margin: var(--space-3) 0 0;
  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-ink);
  max-width: 22ch;
}

.page-strength .journey-hero__lede {
  margin: var(--space-4) 0 0;
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-strength .journey-hero__figures {
  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-strength .hero-figure {
  min-width: 0;
}

.page-strength .hero-figure .display-figure {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 0.94;
  letter-spacing: -0.035em;
  color: var(--color-accent);
}

.page-strength .hero-figure__label {
  margin: var(--space-2) 0 0;
  max-width: 28ch;
  font-size: var(--text-sm);
  line-height: 1.55;
  color: var(--color-ink-soft);
}

/* 横向时间轴 */

.page-strength .track {
  display: flex;
  margin: var(--space-6) 0 0;
  padding: 0 0 var(--space-2);
  list-style: none;
  overflow-x: auto;
  overscroll-behavior-x: contain;
}

.page-strength .track__item {
  position: relative;
  flex: 1 0 168px;
  min-width: 0;
}

.page-strength .track__item:not(:last-child)::after {
  content: "";
  position: absolute;
  top: calc(var(--sw-node) / 2);
  left: calc(var(--sw-node) + 12px);
  right: 12px;
  height: var(--border-thin);
  background: var(--color-line);
}

.page-strength .track__node {
  display: block;
  padding-right: var(--space-3);
  text-decoration: none;
  color: inherit;
}

.page-strength .track__num {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--sw-node);
  height: var(--sw-node);
  border-radius: var(--radius-sm);
  border: var(--border-thin) solid color-mix(in srgb, var(--color-accent) 44%, transparent);
  background: var(--color-surface-deep);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  box-shadow: var(--sw-glow-soft);
  transition: border-color 0.22s ease, box-shadow 0.22s ease, color 0.22s ease;
}

.page-strength .track__node:hover .track__num,
.page-strength .track__node:focus-visible .track__num {
  border-color: var(--color-focus);
  box-shadow: var(--sw-glow-strong);
  color: var(--color-focus);
}

.page-strength .track__node:focus-visible {
  outline: none;
}

.page-strength .track__label {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  line-height: 1.45;
  color: var(--color-ink);
}

.page-strength .track__phase {
  display: inline-block;
  margin-top: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
}

/* ============ 图片 ============ */

.page-strength .sw-lead {
  margin-top: var(--space-8);
}

.page-strength .sw-shot {
  margin: 0;
}

.page-strength .sw-shot img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface-alt);
}

.page-strength .sw-shot__cap {
  margin-top: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.6;
  color: var(--color-ink-muted);
}

.page-strength .sw-pair {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

/* ============ 阶段 ============ */

.page-strength .stage {
  padding-block: var(--space-8);
}

.page-strength .stage:first-of-type {
  padding-top: var(--space-8);
}

.page-strength .stage__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.page-strength .stage__index {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  color: var(--color-primary);
}

.page-strength .stage__title {
  margin: 0;
  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-ink);
}

.page-strength .stage__time {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: var(--space-3) 0 0;
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-strength .stage__time-num {
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--color-accent);
}

.page-strength .stage__time-unit {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-strength .stage__owner {
  margin: var(--space-3) 0 0;
  font-size: var(--text-sm);
  line-height: 1.65;
  color: var(--color-ink-muted);
  max-width: 32ch;
}

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

.page-strength .stage__intro--tight {
  margin-bottom: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

/* ============ 环节 ============ */

.page-strength .step {
  padding-block: var(--space-4);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-strength .step:last-of-type {
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-strength .step__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2) var(--space-3);
}

.page-strength .step__num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.14em;
  color: var(--color-primary);
}

.page-strength .step__title {
  flex: 1 1 220px;
  min-width: 0;
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.35;
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-strength .step__meta {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
  margin: var(--space-3) 0 0;
}

.page-strength .step__meta-row {
  display: grid;
  grid-template-columns: minmax(58px, auto) minmax(0, 1fr);
  gap: var(--space-3);
  align-items: start;
}

.page-strength .step__meta dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  line-height: 1.9;
  color: var(--color-ink-muted);
}

.page-strength .step__meta dd {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

/* ============ 亮底结论带 ============ */

.page-strength .contrast-band {
  padding-block: var(--space-6);
  background: var(--color-contrast-surface);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.page-strength .sw-band__kicker {
  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-strength .sw-band__text {
  margin: 0;
  max-width: 46ch;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

/* ============ 青训台阶 ============ */

.page-strength .sw-subhead {
  margin: var(--space-6) 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-strength .ladder {
  display: grid;
  gap: var(--space-2);
  margin: var(--space-3) 0 0;
  padding: 0;
  list-style: none;
}

.page-strength .ladder__rung {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-1);
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background: linear-gradient(90deg, var(--color-surface-alt) 0%, var(--color-surface) 100%);
}

.page-strength .ladder__level {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.page-strength .ladder__desc {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-strength .ladder__rung:last-child {
  border-color: color-mix(in srgb, var(--color-accent) 42%, transparent);
  box-shadow: var(--sw-glow-soft);
}

.page-strength .ladder__rung:last-child .ladder__level {
  color: var(--color-accent);
}

/* ============ 动作出口 ============ */

.page-strength .next {
  padding-block: var(--section-y);
  border-top: var(--border-thin) solid var(--color-line);
  background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-surface-alt) 100%);
}

.page-strength .next__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.page-strength .next__card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, var(--color-surface-deep) 0%, var(--color-surface-alt) 100%);
  text-decoration: none;
  color: var(--color-ink);
  transition: border-color 0.22s ease, box-shadow 0.22s ease;
}

.page-strength .next__card:hover,
.page-strength .next__card:focus-visible {
  border-color: color-mix(in srgb, var(--color-accent) 46%, transparent);
  box-shadow: var(--sw-glow-soft);
  outline: none;
}

.page-strength .next__card-key {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-primary);
}

.page-strength .next__card-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
}

.page-strength .next__card-text {
  flex: 1 1 auto;
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-strength .next__card-go {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-accent);
}

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

.page-strength .next__foot a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-strength .next__foot a:hover,
.page-strength .next__foot a:focus-visible {
  color: var(--color-accent);
}

/* ============ 响应式 ============ */

@media (min-width: 600px) {
  .page-strength .step__meta-row {
    grid-template-columns: 68px minmax(0, 1fr);
  }

  .page-strength .ladder__rung {
    grid-template-columns: minmax(120px, auto) minmax(0, 1fr);
    align-items: baseline;
    gap: var(--space-3);
  }
}

@media (min-width: 720px) {
  .page-strength .journey-hero__figures {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-6);
  }

  .page-strength .sw-pair {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: var(--space-4);
    align-items: start;
  }

  .page-strength .next__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
  }
}

@media (min-width: 900px) {
  .page-strength .journey-hero {
    padding-block: var(--space-8) var(--section-y);
  }

  .page-strength .stage__grid {
    grid-template-columns: minmax(210px, 3fr) minmax(0, 7fr);
    gap: var(--space-6);
  }

  .page-strength .stage__title {
    font-size: var(--text-3xl);
  }

  .page-strength .stage__time-num {
    font-size: var(--text-3xl);
  }

  .page-strength .step__title {
    font-size: var(--text-xl);
  }

  .page-strength .sw-band__text {
    font-size: var(--text-2xl);
  }

  .page-strength .ladder__rung:nth-child(1) {
    margin-inline-end: 34%;
  }

  .page-strength .ladder__rung:nth-child(2) {
    margin-inline-end: 22%;
  }

  .page-strength .ladder__rung:nth-child(3) {
    margin-inline-end: 11%;
  }

  .page-strength .ladder__rung:nth-child(4) {
    margin-inline-end: 0;
  }
}

@media (min-width: 1100px) {
  .page-strength .stage {
    padding-block: var(--section-y);
  }

  .page-strength .stage__body {
    padding-left: var(--space-6);
    border-left: var(--border-thin) solid var(--color-line);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-strength .track__num,
  .page-strength .next__card {
    transition: none;
  }
}