.page-strength .strength-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  padding-top: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-strength .strength-crumb a {
  color: var(--color-ink);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-strength .strength-crumb a:hover,
.page-strength .strength-crumb a:focus-visible {
  color: var(--color-primary);
  text-decoration-thickness: 2px;
}

.page-strength .strength-h2 {
  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);
  margin: var(--space-2) 0 0;
  max-width: 22ch;
}

.page-strength .strength-lede {
  max-width: var(--measure);
  margin: var(--space-3) 0 0;
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 首屏 ---------- */

.page-strength .strength-hero {
  position: relative;
  padding: var(--space-6) 0 var(--space-8);
  background-image: linear-gradient(
    160deg,
    color-mix(in srgb, var(--color-primary-soft) 70%, transparent) 0%,
    transparent 52%
  );
}

.page-strength .strength-hero__grid {
  display: grid;
  gap: var(--space-6);
}

.page-strength .strength-hero__lead {
  position: relative;
}

.page-strength .strength-hero__eyebrow {
  margin: 0;
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  letter-spacing: 0.18em;
  color: var(--color-primary);
}

.page-strength .strength-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: 14ch;
}

.page-strength .strength-hero__intro {
  max-width: var(--measure);
  margin: var(--space-3) 0 0;
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-strength .strength-hero__points {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-3);
  max-width: var(--measure);
}

.page-strength .strength-hero__points li {
  padding-left: var(--space-3);
  border-left: var(--border-thin) solid var(--color-primary);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-strength .strength-hero__points strong {
  color: var(--color-ink);
  font-weight: var(--weight-heading);
}

.page-strength .strength-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-6);
}

.page-strength .strength-hero__panel {
  position: relative;
  overflow: hidden;
  min-height: 400px;
  display: flex;
  background: var(--color-contrast-surface);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-md);
}

.page-strength .strength-hero__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-strength .strength-hero__scrim {
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
}

.page-strength .strength-hero__figures {
  position: relative;
  z-index: 1;
  width: 100%;
  list-style: none;
  margin: 0;
  padding: var(--space-6) var(--space-3);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-4);
}

.page-strength .strength-hero__figure {
  display: block;
  padding: var(--space-2) var(--space-3);
  border: var(--border-thin) solid transparent;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--color-contrast-ink);
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.page-strength .strength-hero__figure:hover {
  border-color: var(--color-contrast-accent);
  background-color: color-mix(in srgb, var(--color-contrast-accent) 16%, transparent);
}

.page-strength .strength-hero__figure-value {
  display: flex;
  align-items: baseline;
  gap: var(--space-1);
}

.page-strength .strength-hero__figure-num {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-contrast-accent);
}

.page-strength .strength-hero__figure-unit {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  color: var(--color-contrast-accent);
}

.page-strength .strength-hero__figure-label {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  max-width: 34ch;
}

/* ---------- 时效 ---------- */

.page-strength .strength-timing__grid {
  display: grid;
  gap: var(--space-6);
}

.page-strength .timeline {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
  counter-reset: none;
}

.page-strength .timeline__item {
  position: relative;
  display: grid;
  gap: var(--space-1);
  padding: var(--space-4) 0 var(--space-4) var(--space-4);
  border-left: var(--border-thin) solid var(--color-line);
}

.page-strength .timeline__item::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--border-thin) - 3px);
  top: var(--space-4);
  width: 8px;
  height: 8px;
  background: var(--color-primary);
}

.page-strength .timeline__mark {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1.1;
  color: var(--color-primary);
}

.page-strength .timeline__name {
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

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

.page-strength .strength-timing__fallback {
  max-width: var(--measure);
  margin: var(--space-6) 0 0;
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-strength .strength-timing__figure {
  margin: 0;
}

/* ---------- 覆盖 ---------- */

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

.page-strength .coverage-scroll {
  margin-top: var(--space-6);
  overflow-x: auto;
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface);
}

.page-strength .coverage-table {
  width: 100%;
  min-width: 660px;
  border-collapse: collapse;
  font-size: var(--text-base);
}

.page-strength .coverage-table caption {
  caption-side: top;
  text-align: left;
  padding: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  border-bottom: var(--border-thin) solid var(--color-line);
  background: var(--color-surface-deep);
}

.page-strength .coverage-table th,
.page-strength .coverage-table td {
  text-align: left;
  padding: var(--space-3) var(--space-3);
  border-bottom: 1px solid var(--color-line);
  border-left: 4px solid transparent;
  vertical-align: top;
  line-height: 1.5;
  color: var(--color-ink);
}

.page-strength .coverage-table thead th {
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  color: var(--color-ink-soft);
  background: var(--color-surface-alt);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-strength .coverage-table tbody th {
  font-weight: var(--weight-heading);
  white-space: nowrap;
}

.page-strength .coverage-table tbody td:nth-child(3) {
  color: var(--color-ink-soft);
}

.page-strength .coverage-table tbody tr:nth-child(3n) th,
.page-strength .coverage-table tbody tr:nth-child(3n) td {
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
}

.page-strength .coverage-table tbody tr.is-key {
  background: var(--color-highlight);
}

.page-strength .coverage-table tbody tr:hover {
  background: var(--color-primary-soft);
}

.page-strength .coverage-table tbody tr:hover th:first-child {
  border-left-color: var(--color-primary);
}

.page-strength .coverage-table tbody tr:last-child th,
.page-strength .coverage-table tbody tr:last-child td {
  border-bottom: none;
}

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

.page-strength .strength-coverage__banner {
  margin: var(--space-6) 0 0;
}

/* ---------- 体验 ---------- */

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

.page-strength .strength-mobile__grid {
  display: grid;
  gap: var(--space-6);
}

.page-strength .strength-mobile__shot {
  margin: 0;
}

.page-strength .strength-mobile__list {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-4);
}

.page-strength .strength-mobile__list li {
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-strength .strength-mobile__list strong {
  display: block;
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-strength .strength-mobile__list span {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

.page-strength .measure-demo {
  margin-top: var(--space-6);
  padding: var(--space-4);
  background: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
}

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

.page-strength .measure-demo__note {
  margin: var(--space-2) 0 0;
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-line);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

/* ---------- 边界（深色） ---------- */

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

.page-strength .strength-limits__grid {
  display: grid;
  gap: var(--space-6);
}

.page-strength .strength-limits .chapter__num {
  color: var(--color-contrast-accent);
}

.page-strength .strength-limits .strength-h2 {
  color: var(--color-contrast-ink);
}

.page-strength .strength-limits .strength-lede {
  color: var(--color-contrast-ink);
}

.page-strength .limit-item {
  border-bottom: 1px solid var(--color-contrast-line);
}

.page-strength .limit-item:first-of-type {
  border-top: 1px solid var(--color-contrast-line);
  margin-top: var(--space-6);
}

.page-strength .limit-item summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  cursor: pointer;
  list-style: none;
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-contrast-ink);
}

.page-strength .limit-item summary::-webkit-details-marker {
  display: none;
}

.page-strength .limit-item summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  line-height: 1;
  color: var(--color-contrast-accent);
}

.page-strength .limit-item[open] summary::after {
  content: "–";
}

.page-strength .limit-item summary:hover {
  color: var(--color-contrast-accent);
}

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

.page-strength .strength-limits__figure {
  margin: 0;
}

/* ---------- 长期 ---------- */

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

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

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

/* ---------- 行动出口 ---------- */

.page-strength .strength-check {
  padding-block: var(--section-y) var(--space-8);
  background: var(--color-surface-alt);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-strength .strength-check__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-6);
}

.page-strength .contact-inline {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  margin: var(--space-6) 0 0;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-line);
}

.page-strength .contact-inline__item {
  display: grid;
  gap: var(--space-1);
}

.page-strength .contact-inline dt {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-strength .contact-inline dd {
  margin: 0;
}

.page-strength .copytext {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  color: var(--color-ink);
  word-break: break-all;
  user-select: all;
  border-bottom: var(--border-thin) solid var(--color-primary);
}

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

/* ---------- 桌面端 ---------- */

@media (min-width: 900px) {
  .page-strength .strength-hero {
    padding: var(--space-6) 0 var(--space-8);
  }

  .page-strength .strength-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-8);
    align-items: stretch;
  }

  .page-strength .strength-hero__lead {
    padding-right: var(--space-8);
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .page-strength .strength-hero__lead::after {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    right: 0;
    width: 2px;
    background-image: repeating-linear-gradient(
      to bottom,
      var(--color-line) 0,
      var(--color-line) 6px,
      transparent 6px,
      transparent 16px
    );
  }

  .page-strength .strength-hero__figures {
    padding: var(--space-8) var(--space-4);
  }

  .page-strength .strength-timing__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-strength .strength-mobile__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-strength .strength-limits__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-strength .strength-limits .strength-lede {
    max-width: 48ch;
  }

  .page-strength .strength-record__inner {
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--space-3) var(--space-8);
    align-items: start;
  }

  .page-strength .strength-record__inner .chapter {
    grid-column: 1 / -1;
  }

  .page-strength .strength-record__inner .strength-h2 {
    grid-column: 1;
    margin-top: 0;
  }

  .page-strength .strength-record__text {
    grid-column: 2;
    margin-top: 0;
  }
}

@media (min-width: 1140px) {
  .page-strength .strength-hero__panel {
    min-height: 520px;
  }
}