.page-strength {
  --strength-band-pad: var(--space-3);
  background: var(--color-surface);
  color: var(--color-ink);
}

/* ---------- 首屏 ---------- */
.page-strength .strength-hero {
  padding-top: var(--space-6);
  padding-bottom: 0;
}

.page-strength .strength-hero__title {
  margin: var(--space-3) 0 var(--space-3);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-display);
  line-height: 1.02;
  letter-spacing: var(--tracking-heading);
  transform: skewX(-2deg);
  transform-origin: left bottom;
}

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

/* 四段不等宽色块带 */
.page-strength .strength-hero__bands {
  position: relative;
  margin-top: var(--space-6);
  overflow: hidden;
  background: var(--color-contrast-surface);
}

.page-strength .strength-hero__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.34;
}

.page-strength .strength-hero__bands::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
  pointer-events: none;
}

.page-strength .strength-bands {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
}

.page-strength .strength-band {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-2);
  min-height: 124px;
  padding: var(--strength-band-pad);
  color: var(--color-primary-ink);
  text-decoration: none;
  border-top: var(--border-thick) solid rgba(255, 255, 255, 0.26);
  transition: flex-grow 0.35s ease, background-color 0.35s ease, padding-left 0.35s ease;
}

.page-strength .strength-band--supply {
  background: color-mix(in srgb, var(--color-primary) 88%, transparent);
}

.page-strength .strength-band--latency {
  background: color-mix(in srgb, var(--color-accent) 88%, transparent);
}

.page-strength .strength-band--records {
  background: color-mix(in srgb, var(--color-contrast-surface) 82%, transparent);
}

.page-strength .strength-band--service {
  background: color-mix(in srgb, var(--color-primary) 44%, transparent);
}

.page-strength .strength-band__num {
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-primary-ink);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.page-strength .strength-band__name {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  letter-spacing: var(--tracking-heading);
}

.page-strength .strength-band__hint {
  font-size: var(--text-sm);
  color: color-mix(in srgb, var(--color-primary-ink) 76%, transparent);
}

.page-strength .strength-band:hover .strength-band__num,
.page-strength .strength-band:focus-visible .strength-band__num {
  opacity: 1;
}

.page-strength .strength-band:focus-visible {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: -4px;
}

/* ---------- 差异点条目 ---------- */
.page-strength .reason {
  border-top: var(--border-thick) solid var(--color-line);
  padding-top: var(--space-4);
}

.page-strength .reason + .reason {
  margin-top: var(--space-8);
}

.page-strength .reason__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.page-strength .reason__index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 64px;
  height: 64px;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: var(--color-primary-ink);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1;
}

.page-strength .reason__title {
  flex: 1 1 320px;
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
}

.page-strength .reason--green .reason__index {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

.page-strength .reason--night .reason__index {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-accent);
}

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

.page-strength .reason__pain,
.page-strength .reason__fix {
  padding: var(--strength-band-pad);
}

.page-strength .reason__pain {
  background: var(--color-surface-alt);
  border-left: var(--border-thick) solid var(--color-ink-soft);
}

.page-strength .reason__pain p:last-child,
.page-strength .reason__fix p:last-child {
  margin-bottom: 0;
}

.page-strength .reason__fix {
  background: var(--color-primary-soft);
  border-left: var(--border-thick) solid var(--color-primary);
}

.page-strength .reason--green .reason__fix {
  background: var(--color-highlight);
  border-left-color: var(--color-accent);
}

.page-strength .reason--night .reason__fix {
  background: var(--color-surface-deep);
  border-left-color: var(--color-contrast-surface);
}

.page-strength .reason__figure {
  margin: var(--space-3) 0 0;
}

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

/* 事实数字行 */
.page-strength .reason__facts {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: var(--space-3) var(--space-4);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-3);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-strength .reason__fact {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding-left: var(--space-2);
  border-left: var(--border-thin) solid var(--color-contrast-line);
}

.page-strength .reason__fact .num {
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.1;
  letter-spacing: 0;
  color: var(--color-contrast-accent);
}

.page-strength .reason__fact span:last-child {
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-contrast-ink);
}

.page-strength .reason__next {
  margin: var(--space-3) 0 0;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

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

/* ---------- 深色建议区 ---------- */
.page-strength .strength-outro .eyebrow {
  color: var(--color-contrast-accent);
}

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

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

.page-strength .strength-outro__cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-top: var(--space-4);
}

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

.page-strength .strength-outro__sub {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  color: var(--color-contrast-ink);
}

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

.page-strength .strength-outro__contact {
  font-family: var(--font-mono);
  color: var(--color-contrast-accent);
  word-break: break-all;
}

.page-strength .strength-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-strength .strength-bands {
    flex-direction: row;
    align-items: stretch;
    min-height: 380px;
  }

  .page-strength .strength-band {
    flex: 1 1 0;
    min-height: auto;
    border-top: 0;
    border-right: var(--border-thin) solid rgba(255, 255, 255, 0.2);
  }

  .page-strength .strength-band:nth-child(1) { flex-grow: 1.45; }
  .page-strength .strength-band:nth-child(2) { flex-grow: 1.2; }
  .page-strength .strength-band:nth-child(3) { flex-grow: 1; }
  .page-strength .strength-band:nth-child(4) { flex-grow: 0.8; }

  .page-strength .strength-band:hover,
  .page-strength .strength-band:focus-visible {
    flex-grow: 2.4;
    padding-left: var(--space-4);
  }

  .page-strength .strength-outro__cols {
    grid-template-columns: 1.1fr 0.9fr;
    gap: var(--space-8);
  }
}

@media (min-width: 900px) {
  .page-strength .reason__body {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.62fr);
    gap: var(--space-6);
  }
}

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

  .page-strength .strength-band:hover,
  .page-strength .strength-band:focus-visible {
    flex-grow: inherit;
    padding-left: var(--strength-band-pad);
  }

  .page-strength .strength-band__num {
    opacity: 1;
  }
}