.page-custom-steps {
  --cs-rail: 28px;
  --cs-dot: 9px;
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-serif);
  line-height: var(--leading-body);
  overflow-x: hidden;
}

.page-custom-steps .container {
  position: relative;
}

.page-custom-steps h1,
.page-custom-steps h2,
.page-custom-steps h3 {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin: 0;
}

.page-custom-steps .u-mono {
  font-family: var(--font-mono);
}

.page-custom-steps .section-marker {
  position: absolute;
  top: calc(-1 * var(--space-4));
  right: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}

.page-custom-steps .cs-overview .section-marker {
  color: var(--color-contrast-accent);
}

/* 面包屑 */
.page-custom-steps .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  padding-top: var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-custom-steps .breadcrumb a {
  color: var(--color-ink-soft);
  text-decoration: none;
}

.page-custom-steps .breadcrumb a:hover,
.page-custom-steps .breadcrumb a:focus-visible {
  color: var(--color-focus);
}

.page-custom-steps .breadcrumb__sep {
  color: var(--color-line);
}

/* 首屏文字区 */
.page-custom-steps .cs-intro {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-4) 0 var(--space-6);
}

.page-custom-steps .cs-intro .rule-index {
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-accent);
}

.page-custom-steps .cs-intro h1 {
  font-size: var(--text-2xl);
  max-width: 24ch;
}

.page-custom-steps .cs-intro__lead {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  color: var(--color-ink-soft);
}

.page-custom-steps .cs-intro__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
  margin: var(--space-2) 0 0;
  padding: var(--space-3) 0 0;
  list-style: none;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-custom-steps .cs-fact__n {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  line-height: 1;
  color: var(--color-accent);
}

.page-custom-steps .cs-fact__l {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

/* 窄幅氛围图 */
.page-custom-steps .cs-banner {
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: 0 0 var(--space-6);
}

/* 深色总览刻度轴 */
.page-custom-steps .cs-overview {
  position: relative;
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding: var(--space-8) 0;
}

.page-custom-steps .cs-overview h2 {
  color: var(--color-contrast-ink);
  font-size: var(--text-xl);
}

.page-custom-steps .cs-overview p {
  margin: var(--space-2) 0 0;
  max-width: var(--measure);
  color: var(--color-contrast-ink);
  opacity: 0.84;
}

.page-custom-steps .cs-overview__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  align-items: start;
}

.page-custom-steps .cs-vlabel {
  writing-mode: vertical-rl;
  text-orientation: upright;
  display: inline-block;
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  color: var(--color-primary);
  white-space: nowrap;
}

.page-custom-steps .cs-vlabel--deep {
  color: var(--color-contrast-accent);
}

.page-custom-steps .cs-axis {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
  margin: var(--space-6) 0 0;
  padding: 0;
}

.page-custom-steps .cs-axis__item {
  min-width: 0;
}

.page-custom-steps .cs-axis__btn {
  display: block;
  position: relative;
  padding: var(--space-3) var(--space-2) var(--space-2) 0;
  border-top: var(--border-thin) solid var(--color-contrast-line);
  text-decoration: none;
  color: inherit;
}

.page-custom-steps .cs-axis__btn::after {
  content: "";
  position: absolute;
  top: calc(-1 * var(--cs-dot) / 2);
  left: 0;
  width: var(--cs-dot);
  height: var(--cs-dot);
  border-radius: 50%;
  background: var(--color-contrast-accent);
}

.page-custom-steps .cs-axis__btn:hover .cs-axis__t,
.page-custom-steps .cs-axis__btn:focus-visible .cs-axis__t {
  color: var(--color-contrast-accent);
}

.page-custom-steps .cs-axis__n {
  display: block;
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-contrast-accent);
}

.page-custom-steps .cs-axis__t {
  display: block;
  margin-top: var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  color: var(--color-contrast-ink);
}

.page-custom-steps .cs-axis__m {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  opacity: 0.72;
}

/* 阶段区块 */
.page-custom-steps .cs-stage__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  align-items: start;
  margin-bottom: var(--space-6);
}

.page-custom-steps .cs-stage__head h2 {
  font-size: var(--text-xl);
  max-width: 26ch;
}

.page-custom-steps .cs-stage__head p {
  margin: var(--space-2) 0 0;
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-custom-steps .cs-spread {
  display: grid;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.page-custom-steps .cs-spread__fig {
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-custom-steps .cs-spread__text p {
  margin: 0 0 var(--space-3);
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-custom-steps .cs-stage-banner {
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: 0 0 var(--space-8);
}

.page-custom-steps .cs-figcap {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  text-align: left;
}

/* 刻度轴 + 节点 */
.page-custom-steps .cs-rail {
  position: relative;
}

.page-custom-steps .cs-rail::before {
  content: "";
  position: absolute;
  top: var(--space-2);
  bottom: var(--space-6);
  left: calc(var(--cs-rail) / 2);
  width: var(--border-thin);
  background: var(--color-line);
}

.page-custom-steps .cs-node {
  display: grid;
  grid-template-columns: var(--cs-rail) minmax(0, 1fr);
  gap: var(--space-3);
  padding-bottom: var(--space-6);
}

.page-custom-steps .cs-node:last-child {
  padding-bottom: 0;
}

.page-custom-steps .cs-node__axis {
  position: relative;
}

.page-custom-steps .cs-node__dot {
  position: absolute;
  top: var(--space-3);
  left: 50%;
  transform: translateX(-50%);
  width: var(--cs-dot);
  height: var(--cs-dot);
  border-radius: 50%;
  background: var(--color-accent);
  border: var(--border-thin) solid var(--color-surface);
}

.page-custom-steps .cs-stage--b .cs-node__dot {
  border-color: var(--color-surface-alt);
}

.page-custom-steps .cs-node__body {
  min-width: 0;
}

.page-custom-steps .cs-stage--a .cs-node__body {
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.page-custom-steps .cs-stage--b .cs-node__body {
  padding: 0 0 var(--space-4);
}

.page-custom-steps .cs-stage--b .cs-node__body::before {
  content: "";
  display: block;
  width: var(--space-8);
  height: var(--border-thick);
  background: var(--color-primary);
  margin-bottom: var(--space-3);
}

.page-custom-steps .cs-node__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.page-custom-steps .cs-node__n {
  font-size: var(--text-sm);
  letter-spacing: 0.14em;
  color: var(--color-accent);
}

.page-custom-steps .cs-node h3 {
  font-size: var(--text-lg);
}

.page-custom-steps .cs-stage--b .cs-node h3 {
  font-size: var(--text-xl);
}

.page-custom-steps .cs-node__body > p {
  margin: 0;
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-custom-steps .cs-node__io {
  display: grid;
  gap: var(--space-2);
  margin: var(--space-3) 0 0;
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-custom-steps .cs-io dt {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-primary);
}

.page-custom-steps .cs-io--done dt {
  color: var(--color-accent);
}

.page-custom-steps .cs-io dd {
  margin: var(--space-1) 0 0;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

/* 两种走法对照 */
.page-custom-steps .cs-table-wrap {
  overflow-x: auto;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-custom-steps .cs-compare {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  text-align: left;
}

.page-custom-steps .cs-compare caption {
  padding: var(--space-2) 0;
}

.page-custom-steps .cs-compare th,
.page-custom-steps .cs-compare td {
  padding: var(--space-2) var(--space-2) var(--space-2) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
  vertical-align: top;
  font-size: var(--text-sm);
}

.page-custom-steps .cs-compare thead th {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  color: var(--color-ink);
  border-bottom-color: var(--color-primary);
}

.page-custom-steps .cs-compare tbody th {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  color: var(--color-primary);
  width: 18%;
}

.page-custom-steps .cs-compare td {
  color: var(--color-ink-soft);
  padding-right: var(--space-3);
}

.page-custom-steps .cs-compare__more {
  margin: var(--space-4) 0 0;
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

/* 卡点 */
.page-custom-steps .cs-traps {
  display: grid;
  gap: var(--space-2);
}

.page-custom-steps .cs-trap {
  background: var(--color-highlight);
  border-left: var(--border-thick) solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--space-3);
}

.page-custom-steps .cs-trap:hover,
.page-custom-steps .cs-trap:focus-within {
  border-left-color: var(--color-primary);
}

.page-custom-steps .cs-trap summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
  cursor: pointer;
  list-style: none;
}

.page-custom-steps .cs-trap summary::-webkit-details-marker {
  display: none;
}

.page-custom-steps .cs-trap__q {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  color: var(--color-ink);
}

.page-custom-steps .cs-trap[open] .cs-trap__q {
  color: var(--color-accent);
}

.page-custom-steps .cs-trap__hint {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}

.page-custom-steps .cs-trap__fix {
  margin: var(--space-2) 0 0;
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

/* 行动出口 */
.page-custom-steps .cs-exit__panel {
  background: var(--color-primary-soft);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-3);
}

.page-custom-steps .cs-exit__panel h2 {
  font-size: var(--text-xl);
  max-width: 24ch;
}

.page-custom-steps .cs-exit__panel p {
  margin: var(--space-2) 0 0;
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-custom-steps .cs-exit__panel a {
  color: var(--color-primary);
}

.page-custom-steps .cs-exit__panel a:hover,
.page-custom-steps .cs-exit__panel a:focus-visible {
  color: var(--color-focus);
}

.page-custom-steps .cs-exit__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

/* 桌面 */
@media (min-width: 760px) {
  .page-custom-steps {
    --cs-rail: 40px;
  }

  .page-custom-steps .cs-intro h1 {
    font-size: var(--text-3xl);
  }

  .page-custom-steps .cs-intro__lead {
    font-size: var(--text-lg);
  }

  .page-custom-steps .cs-intro__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-custom-steps .cs-overview {
    padding: var(--section-y) 0;
  }

  .page-custom-steps .cs-overview h2,
  .page-custom-steps .cs-stage__head h2,
  .page-custom-steps .cs-exit__panel h2 {
    font-size: var(--text-2xl);
  }

  .page-custom-steps .cs-axis {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: var(--space-2);
  }

  .page-custom-steps .cs-axis__t {
    font-size: var(--text-base);
  }

  .page-custom-steps .cs-spread {
    grid-template-columns: 5fr 7fr;
    align-items: center;
    gap: var(--space-6);
  }

  .page-custom-steps .cs-node__io {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-3);
  }

  .page-custom-steps .cs-node {
    padding-bottom: var(--space-8);
  }

  .page-custom-steps .cs-exit__panel {
    padding: var(--space-8);
  }
}

@media (min-width: 1000px) {
  .page-custom-steps .cs-axis__m {
    font-size: var(--text-xs);
  }

  .page-custom-steps .cs-intro {
    padding-top: var(--space-6);
  }
}