.page-comparison {
  --cmp-tint: color-mix(in srgb, var(--color-primary) 18%, transparent);
  --cmp-tint-soft: color-mix(in srgb, var(--color-primary) 8%, transparent);
  --cmp-node-w: 170px;
}

/* ---------- 面包屑 ---------- */
.page-comparison .breadcrumb {
  padding-top: var(--space-4);
  padding-bottom: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-comparison .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-comparison .breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

.page-comparison .breadcrumb li + li::before {
  content: "/";
  color: var(--color-line);
}

.page-comparison .breadcrumb a {
  color: var(--color-ink-soft);
  text-decoration: none;
  border-bottom: var(--border-thin) solid transparent;
  transition: color 220ms ease, border-color 220ms ease;
}

.page-comparison .breadcrumb a:hover,
.page-comparison .breadcrumb a:focus-visible {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* ---------- 首屏 ---------- */
.page-comparison .cmp-hero {
  position: relative;
  overflow: hidden;
  padding-bottom: var(--space-8);
  background:
    radial-gradient(115% 78% at 86% -18%, var(--cmp-tint), transparent 62%),
    var(--color-surface);
}

.page-comparison .cmp-hero__inner {
  display: grid;
  gap: var(--space-6);
  padding-top: var(--space-4);
  padding-bottom: var(--space-6);
}

.page-comparison .cmp-hero__title {
  margin: var(--space-2) 0 var(--space-3);
  max-width: 10em;
  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);
}

.page-comparison .cmp-hero__lede {
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-comparison .cmp-hero__figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
}

.page-comparison .cmp-figure {
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-1);
}

.page-comparison .cmp-figure__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-primary);
}

.page-comparison .cmp-figure__label {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 阶段带（移动端：纵向虚线） ---------- */
.page-comparison .cmp-band {
  position: relative;
  margin-top: var(--space-4);
}

.page-comparison .cmp-band__curve {
  display: none;
}

.page-comparison .cmp-band__nodes {
  display: grid;
  gap: var(--space-4);
  margin: 0;
  padding: 0 0 0 var(--space-4);
  list-style: none;
  border-left: var(--border-thin) dashed var(--color-line);
}

.page-comparison .cmp-band__node {
  position: relative;
  display: grid;
  gap: 2px;
}

.page-comparison .cmp-band__dot {
  position: absolute;
  left: calc(var(--space-4) * -1 - 5px);
  top: 5px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 5px var(--cmp-tint-soft);
}

.page-comparison .cmp-band__idx {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  letter-spacing: 0.08em;
}

.page-comparison .cmp-band__name {
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-comparison .cmp-band__meta {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

/* ---------- 首屏图片 ---------- */
.page-comparison .cmp-hero__media {
  margin: var(--space-6) 0 0;
  overflow: hidden;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-2);
}

.page-comparison .cmp-hero__media .media-block__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 16 / 8;
  object-fit: cover;
}

.page-comparison .cmp-hero__media .media-block__body {
  position: absolute;
  inset: auto 0 0 0;
  padding: var(--space-4);
  color: var(--color-contrast-ink);
}

.page-comparison .cmp-hero__media .media-block__body p {
  margin: 0;
  max-width: 46ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
}

.page-comparison .cmp-hero__cta {
  display: flex;
  justify-content: flex-start;
  margin-top: var(--space-6);
}

/* ---------- 阶段通用 ---------- */
.page-comparison .cmp-stage__grid {
  display: grid;
  gap: var(--space-6);
  align-items: start;
}

.page-comparison .cmp-stage h2 {
  margin: var(--space-2) 0 var(--space-3);
  max-width: 22ch;
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-comparison .cmp-stage__lead {
  max-width: var(--measure);
  margin: 0 0 var(--space-4);
  color: var(--color-ink-soft);
  line-height: var(--leading-body);
}

.page-comparison .cmp-stage__lead--wide {
  max-width: 74ch;
}

.page-comparison .cmp-stage__list {
  margin: var(--space-4) 0 0;
}

.page-comparison .cmp-stage__list li {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-2) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-comparison .cmp-stage__key {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-comparison .cmp-stage__list li > span:last-child {
  color: var(--color-ink);
  line-height: var(--leading-body);
}

.page-comparison .cmp-stage__note {
  margin: var(--space-4) 0 0;
  padding: var(--space-2) var(--space-3);
  border-left: var(--border-thin) solid var(--color-primary);
  background: var(--cmp-tint-soft);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-comparison .cmp-stage__media {
  margin: 0;
}

.page-comparison .cmp-stage__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-1);
}

.page-comparison .cmp-stage__media figcaption {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
}

/* ---------- 阶段二：新老并置 ---------- */
.page-comparison .cmp-split {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.page-comparison .cmp-split__col {
  padding: var(--space-4);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-1);
}

.page-comparison .cmp-split__col--deep {
  border-color: var(--color-contrast-line);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  box-shadow: var(--shadow-1);
}

.page-comparison .cmp-split__title {
  margin: var(--space-3) 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: inherit;
}

.page-comparison .cmp-split__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-comparison .cmp-split__list li {
  position: relative;
  padding-left: var(--space-3);
  margin-bottom: var(--space-2);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-comparison .cmp-split__col--deep .cmp-split__list li {
  color: var(--color-contrast-ink);
  opacity: 0.86;
}

.page-comparison .cmp-split__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 1px;
  background: var(--color-primary);
}

.page-comparison .cmp-split__col--deep .cmp-split__list li::before {
  background: var(--color-contrast-accent);
}

.page-comparison .cmp-split__foot {
  margin: var(--space-3) 0 0;
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid currentColor;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  opacity: 0.78;
}

.page-comparison .cmp-inline-link {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-accent);
  transition: color 220ms ease;
}

.page-comparison .cmp-inline-link:hover,
.page-comparison .cmp-inline-link:focus-visible {
  color: var(--color-focus);
  border-bottom-color: var(--color-focus);
}

.page-comparison .cmp-split__col--deep .cmp-inline-link {
  color: var(--color-contrast-accent);
  border-bottom-color: var(--color-contrast-accent);
}

/* ---------- 阶段二：换类条件 ---------- */
.page-comparison .cmp-switch {
  margin-top: var(--space-6);
  padding: var(--space-4);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface-deep);
}

.page-comparison .cmp-switch__title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-comparison .cmp-switch__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-comparison .cmp-switch__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-1);
  padding: var(--space-3) 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-comparison .cmp-switch__cond {
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  line-height: var(--leading-body);
}

.page-comparison .cmp-switch__arrow {
  color: var(--color-primary);
  font-family: var(--font-mono);
  line-height: 1;
}

.page-comparison .cmp-switch__to {
  color: var(--color-ink-soft);
  line-height: var(--leading-body);
}

.page-comparison .cmp-switch__note {
  margin: var(--space-3) 0 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 阶段三：深色 ---------- */
.page-comparison .cmp-stage__deep {
  color: var(--color-contrast-ink);
}

.page-comparison .cmp-eyebrow--deep {
  color: var(--color-contrast-accent);
}

.page-comparison .cmp-stage__deep-title {
  margin: var(--space-2) 0 var(--space-3);
  max-width: 20ch;
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.page-comparison .cmp-stage__deep-lead {
  max-width: 62ch;
  margin: 0 0 var(--space-4);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  opacity: 0.82;
}

.page-comparison .cmp-deep-grid {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.page-comparison .cmp-deep-cell {
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-contrast-ink) 6%, transparent);
}

.page-comparison .cmp-deep-cell__num {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-contrast-accent);
}

.page-comparison .cmp-deep-cell h3 {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-contrast-ink);
}

.page-comparison .cmp-deep-cell p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  opacity: 0.78;
}

.page-comparison .cmp-stage__deep-foot {
  margin: var(--space-4) 0;
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  opacity: 0.82;
}

.page-comparison .btn--deep {
  background: var(--color-contrast-accent);
  color: var(--color-primary-ink);
  border-color: var(--color-contrast-accent);
}

/* ---------- 阶段四：复核 ---------- */
.page-comparison .cmp-stage__media--tall img {
  box-shadow: var(--shadow-2);
}

.page-comparison .cmp-stage__callout {
  margin-top: var(--space-4);
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.page-comparison .cmp-stage__callout h3 {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-comparison .cmp-stage__callout p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 七个环节 ---------- */
.page-comparison .cmp-steps__lead {
  max-width: 62ch;
  margin: 0;
  color: var(--color-ink-soft);
  line-height: var(--leading-body);
}

.page-comparison .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin: var(--space-4) 0 var(--space-1);
}

.page-comparison .filter-status {
  margin: 0 0 var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-comparison .cmp-steps__list {
  margin: var(--space-4) 0 0;
  padding: 0;
  list-style: none;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-comparison .cmp-step {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-3) var(--space-4) var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-line);
  border-left: 3px solid transparent;
  transition: border-color 240ms ease, background-color 240ms ease, transform 240ms ease;
}

.page-comparison .cmp-step[hidden] {
  display: none;
}

.page-comparison .cmp-step:hover,
.page-comparison .cmp-step:focus-within {
  border-left-color: var(--color-primary);
  background: var(--cmp-tint-soft);
}

.page-comparison .cmp-step__head {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
}

.page-comparison .cmp-step__num {
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  color: var(--color-primary);
  line-height: 1;
}

.page-comparison .cmp-step__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-comparison .cmp-step__desc {
  margin: 0;
  max-width: 60ch;
  color: var(--color-ink-soft);
  line-height: var(--leading-body);
}

.page-comparison .cmp-step__meta {
  display: grid;
  gap: var(--space-1);
  margin: 0;
  padding: var(--space-2);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
}

.page-comparison .cmp-step__meta-item {
  display: grid;
  gap: 2px;
  padding: var(--space-1) 0;
}

.page-comparison .cmp-step__meta-item + .cmp-step__meta-item {
  border-top: var(--border-thin) solid var(--color-line);
}

.page-comparison .cmp-step__meta dt {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

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

/* ---------- 行动出口 ---------- */
.page-comparison .cmp-exit__inner {
  display: grid;
  gap: var(--space-4);
  align-items: start;
}

.page-comparison .cmp-exit__copy h2 {
  margin: var(--space-2) 0 var(--space-2);
  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-comparison .cmp-exit__copy p {
  margin: 0;
  max-width: 62ch;
  color: var(--color-ink-soft);
  line-height: var(--leading-body);
}

.page-comparison .cmp-exit__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ---------- 中等屏幕 ---------- */
@media (min-width: 700px) {
  .page-comparison .cmp-hero__figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-comparison .cmp-split {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-comparison .cmp-switch__item {
    grid-template-columns: minmax(0, 1.1fr) auto minmax(0, 1.4fr);
    align-items: baseline;
    gap: var(--space-3);
  }

  .page-comparison .cmp-deep-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-comparison .cmp-step__meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-3);
  }

  .page-comparison .cmp-step__meta-item + .cmp-step__meta-item {
    border-top: 0;
    border-left: var(--border-thin) solid var(--color-line);
    padding-left: var(--space-3);
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-comparison .cmp-hero__inner {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    align-items: end;
    gap: var(--space-8);
  }

  .page-comparison .cmp-hero__figures {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-comparison .cmp-band {
    min-height: 300px;
  }

  .page-comparison .cmp-band__curve {
    display: block;
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
  }

  .page-comparison .cmp-band__path {
    fill: none;
    stroke: var(--color-primary);
    stroke-width: 1.4;
    stroke-dasharray: 3 9;
    stroke-linecap: round;
    opacity: 0.55;
  }

  .page-comparison .cmp-band__nodes {
    position: relative;
    display: block;
    height: 300px;
    padding: 0;
    border-left: 0;
  }

  .page-comparison .cmp-band__node {
    position: absolute;
    width: var(--cmp-node-w);
    gap: 2px;
  }

  .page-comparison .cmp-band__node:nth-child(1) { left: 7%; top: 62%; }
  .page-comparison .cmp-band__node:nth-child(2) { left: 30%; top: 30%; }
  .page-comparison .cmp-band__node:nth-child(3) { left: 58%; top: 64%; }
  .page-comparison .cmp-band__node:nth-child(4) { left: 82%; top: 22%; }

  .page-comparison .cmp-band__dot {
    position: static;
    display: block;
    margin-bottom: var(--space-2);
    box-shadow: 0 0 0 6px var(--cmp-tint-soft);
  }

  .page-comparison .cmp-band__node:nth-child(4) .cmp-band__dot {
    background: var(--color-accent);
    box-shadow: 0 0 0 8px color-mix(in srgb, var(--color-accent) 20%, transparent);
  }

  .page-comparison .cmp-stage__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: var(--space-8);
  }

  .page-comparison .cmp-stage__grid--flip {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.35fr);
  }

  .page-comparison .cmp-step {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1.15fr);
    align-items: start;
    gap: var(--space-4) var(--space-6);
    padding: var(--space-6) var(--space-4);
  }

  .page-comparison .cmp-step__head {
    grid-column: 1;
  }

  .page-comparison .cmp-step__desc {
    grid-column: 1;
  }

  .page-comparison .cmp-step__meta {
    grid-column: 2;
    grid-row: 1 / span 2;
  }

  .page-comparison .cmp-step:nth-child(even) {
    margin-inline-start: 5%;
  }

  .page-comparison .cmp-exit__inner {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    align-items: center;
    gap: var(--space-8);
  }
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-comparison .cmp-step,
  .page-comparison .breadcrumb a,
  .page-comparison .cmp-inline-link {
    transition: none;
  }
}