.page-certification {
  --cert-rule: color-mix(in srgb, var(--color-ink-muted) 26%, transparent);
  --cert-rule-dark: color-mix(in srgb, var(--color-contrast-ink) 18%, transparent);
  --cert-accent-soft: color-mix(in srgb, var(--color-accent) 12%, transparent);
  --cert-primary-soft: color-mix(in srgb, var(--color-primary) 12%, transparent);
}

/* ---------- 首屏 ---------- */
.page-certification .cert-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding-block: var(--space-6) var(--space-8);
}

.page-certification .cert-hero::before {
  content: "";
  position: absolute;
  inset: -30% -12% -10% -12%;
  z-index: -1;
  background:
    radial-gradient(58% 52% at 6% 4%, color-mix(in srgb, var(--color-primary) 62%, transparent) 0%, transparent 68%),
    radial-gradient(52% 46% at 98% 92%, color-mix(in srgb, var(--color-accent) 50%, transparent) 0%, transparent 70%);
  pointer-events: none;
}

.page-certification .cert-hero__panel {
  position: relative;
  padding: var(--space-3);
  border: var(--border-thin) solid color-mix(in srgb, var(--color-contrast-accent) 30%, transparent);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--color-contrast-surface) 58%, transparent);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-2);
}

.page-certification .cert-hero .breadcrumb,
.page-certification .cert-hero .breadcrumb a {
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
  font-size: var(--text-xs);
}

.page-certification .cert-hero .breadcrumb {
  margin-bottom: var(--space-4);
}

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

.page-certification .cert-hero__eyebrow {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-2);
  font-size: var(--text-sm);
  letter-spacing: 0.14em;
  color: var(--color-contrast-accent);
}

.page-certification .cert-hero__eyebrow-num {
  display: inline-block;
  padding: calc(var(--space-1) / 2) var(--space-1);
  border: var(--border-thin) solid color-mix(in srgb, var(--color-contrast-accent) 42%, transparent);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
}

.page-certification .cert-hero__title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: 0.92;
  letter-spacing: -0.03em;
  color: var(--color-contrast-ink);
}

.page-certification .cert-hero__lede {
  margin: 0;
  max-width: 54ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 84%, transparent);
}

.page-certification .cert-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: var(--space-4) 0 0;
  padding: 0;
  list-style: none;
}

.page-certification .cert-tag {
  display: inline-flex;
  align-items: center;
  padding: calc(var(--space-1) / 2) var(--space-2);
  border: var(--border-thin) solid var(--cert-rule-dark);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: color-mix(in srgb, var(--color-contrast-ink) 86%, transparent);
}

/* 关键数字 */
.page-certification .cert-figures {
  --text-figure: clamp(38px, 7vw, 66px);
  display: grid;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
}

.page-certification .cert-figures__item {
  display: flex;
  flex-direction: row-reverse;
  align-items: baseline;
  justify-content: flex-end;
  gap: var(--space-3);
  margin: 0;
  padding: var(--space-2) var(--space-3);
  border: var(--border-thin) solid var(--cert-rule-dark);
  border-left: 2px solid var(--color-contrast-accent);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--color-contrast-surface) 74%, transparent);
}

.page-certification .cert-figures__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 0.86;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--color-contrast-accent);
}

.page-certification .cert-figures__label {
  margin: 0;
  font-size: var(--text-sm);
  color: color-mix(in srgb, var(--color-contrast-ink) 70%, transparent);
}

/* 首屏横向时间轴 */
.page-certification .cert-axis-wrap {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--cert-rule-dark);
}

.page-certification .cert-axis {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-certification .cert-axis__node {
  border-top: var(--border-thin) solid var(--cert-rule-dark);
}

.page-certification .cert-axis__node:first-child {
  border-top: 0;
}

.page-certification .cert-axis__link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  color: inherit;
  text-decoration: none;
  transition: color 220ms ease;
}

.page-certification .cert-axis__link:hover,
.page-certification .cert-axis__link:focus-visible {
  color: var(--color-contrast-accent);
  outline: none;
}

.page-certification .cert-axis__dot {
  flex: none;
  width: var(--space-2);
  height: var(--space-2);
  border-radius: 50%;
  background: color-mix(in srgb, var(--color-contrast-accent) 45%, var(--color-contrast-surface));
}

.page-certification .cert-axis__num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-contrast-accent);
}

.page-certification .cert-axis__name {
  font-size: var(--text-sm);
  line-height: 1.3;
  color: color-mix(in srgb, var(--color-contrast-ink) 84%, transparent);
}

.page-certification .cert-axis__link:hover .cert-axis__name,
.page-certification .cert-axis__link:focus-visible .cert-axis__name {
  color: var(--color-contrast-accent);
}

/* ---------- 四类节点 ---------- */
.page-certification .cert-cats__title,
.page-certification .cert-stages__title,
.page-certification .cert-links__head h2 {
  margin: 0 0 var(--space-3);
  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-certification .cert-cats__intro,
.page-certification .cert-stages__intro,
.page-certification .cert-links__head p,
.page-certification .cert-check__main .section-head p {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-certification .cert-cats__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.page-certification .cert-cat {
  position: relative;
  padding: var(--space-4);
  border: var(--border-thin) solid var(--cert-rule);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-surface) 80%, transparent);
  box-shadow: var(--shadow-1);
  transition: border-color 220ms ease;
}

.page-certification .cert-cat:hover {
  border-color: color-mix(in srgb, var(--color-primary) 42%, transparent);
}

.page-certification .cert-cat__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--space-4);
  height: var(--space-4);
  margin-bottom: var(--space-3);
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-heading);
}

.page-certification .cert-cat--b .cert-cat__num,
.page-certification .cert-cat--d .cert-cat__num {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

.page-certification .cert-cat__name {
  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-certification .cert-cat__desc {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-certification .cert-cat__stat {
  margin: var(--space-3) 0 0;
  padding-top: var(--space-2);
  border-top: var(--border-thin) dashed var(--cert-rule);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
}

.page-certification .cert-cat__stat-num {
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-primary);
}

/* ---------- 阶段节点时间线 ---------- */
.page-certification .cert-stages__list {
  display: grid;
  gap: var(--space-8);
  margin-top: var(--space-8);
}

.page-certification .cert-band {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-certification .cert-band--mid {
  border-left: 2px solid color-mix(in srgb, var(--color-accent) 46%, transparent);
  padding-left: var(--space-2);
}

.page-certification .cert-stage {
  position: relative;
  padding-left: var(--space-3);
  border-left: 2px solid color-mix(in srgb, var(--color-primary) 30%, transparent);
}

.page-certification .cert-stage__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: var(--border-thin) solid var(--cert-rule);
}

.page-certification .cert-stage__num {
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.02em;
  color: color-mix(in srgb, var(--color-primary) 72%, transparent);
  font-variant-numeric: tabular-nums;
}

.page-certification .cert-stage__name {
  margin: 0;
  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-certification .cert-stage__count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
}

.page-certification .cert-stage__nodes {
  display: grid;
  gap: var(--space-3);
}

.page-certification .cert-node {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-3);
  border: var(--border-thin) solid var(--cert-rule);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-surface) 86%, transparent);
  transition: border-color 220ms ease, background-color 220ms ease;
}

.page-certification .cert-node:hover {
  border-color: color-mix(in srgb, var(--color-accent) 46%, transparent);
  background: color-mix(in srgb, var(--color-surface) 96%, transparent);
}

.page-certification .cert-node--current {
  border-color: color-mix(in srgb, var(--color-accent) 40%, transparent);
  background: color-mix(in srgb, var(--color-highlight) 52%, var(--color-surface));
}

.page-certification .cert-node__side {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.page-certification .cert-node__num {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
}

.page-certification .cert-node__cat {
  display: inline-block;
  padding: calc(var(--space-1) / 2) var(--space-2);
  border-radius: var(--radius-sm);
  background: var(--cert-accent-soft);
  color: var(--color-accent);
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
}

.page-certification .cert-node__title {
  margin: 0;
  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-certification .cert-node__change {
  margin: var(--space-2) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-certification .cert-node__result {
  margin: var(--space-3) 0 0;
  padding-top: var(--space-2);
  border-top: var(--border-thin) dashed var(--cert-rule);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
}

.page-certification .cert-node__label {
  display: inline-block;
  margin-right: var(--space-1);
  padding: calc(var(--space-1) / 4) var(--space-1);
  border-radius: var(--radius-sm);
  background: var(--color-highlight);
  color: color-mix(in srgb, var(--color-accent) 78%, var(--color-ink));
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
}

/* ---------- 口径核对 ---------- */
.page-certification .cert-check__grid {
  align-items: start;
  row-gap: var(--space-6);
}

.page-certification .cert-check__list {
  margin: var(--space-6) 0 0;
  padding: 0;
  border-top: var(--border-thin) solid var(--cert-rule);
}

.page-certification .cert-check__row {
  display: grid;
  gap: var(--space-1);
  margin: 0;
  padding: var(--space-3) 0;
  border-bottom: var(--border-thin) solid var(--cert-rule);
}

.page-certification .cert-check__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  color: var(--color-primary);
}

.page-certification .cert-check__val {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-certification .cert-check__figure {
  margin: 0 0 var(--space-4);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-certification .cert-check__note {
  margin: 0;
}

.page-certification .cert-check__note p {
  margin: 0 0 var(--space-2);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-certification .cert-check__note p:last-child {
  margin-bottom: 0;
}

/* ---------- 交叉链接 ---------- */
.page-certification .cert-links__panel {
  padding: var(--space-4);
  border: var(--border-thin) solid var(--cert-rule);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--color-surface) 82%, transparent);
  box-shadow: var(--shadow-1);
}

.page-certification .cert-links__head {
  margin-bottom: var(--space-4);
}

.page-certification .cert-links__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 0;
  padding: 0;
  border-top: var(--border-thin) solid var(--cert-rule);
  list-style: none;
}

.page-certification .cert-links__item {
  border-bottom: var(--border-thin) solid var(--cert-rule);
}

.page-certification .cert-links__anchor {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-3) 0;
  color: inherit;
  text-decoration: none;
  transition: color 220ms ease;
}

.page-certification .cert-links__num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

.page-certification .cert-links__text {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--color-accent) 45%, transparent);
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
  transition: text-decoration-color 220ms ease;
}

.page-certification .cert-links__desc {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
}

.page-certification .cert-links__anchor:hover .cert-links__text,
.page-certification .cert-links__anchor:focus-visible .cert-links__text {
  text-decoration-color: var(--color-accent);
}

.page-certification .cert-links__anchor:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 4px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-certification .cert-hero__panel {
    padding: var(--space-4);
  }

  .page-certification .cert-node {
    grid-template-columns: minmax(0, 1fr) minmax(0, 3fr);
    gap: var(--space-4);
    align-items: start;
  }

  .page-certification .cert-node__side {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-1);
  }

  .page-certification .cert-check__row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 2.4fr);
    gap: var(--space-4);
    align-items: baseline;
  }

  .page-certification .cert-links__anchor {
    grid-template-columns: auto minmax(0, 1fr);
    gap: var(--space-1) var(--space-3);
    align-items: baseline;
  }

  .page-certification .cert-links__num {
    grid-row: 1 / span 2;
  }

  .page-certification .cert-links__desc {
    grid-column: 2;
  }
}

@media (min-width: 760px) {
  .page-certification .cert-hero {
    padding-block: var(--space-8) var(--section-y);
  }

  .page-certification .cert-axis {
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: var(--space-1);
  }

  .page-certification .cert-axis__node {
    border-top: 0;
  }

  .page-certification .cert-axis__link {
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    padding: 0;
    text-align: center;
  }

  .page-certification .cert-axis::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: calc(var(--space-2) / 2);
    height: 1px;
    background: linear-gradient(
      90deg,
      transparent 0%,
      color-mix(in srgb, var(--color-contrast-accent) 52%, transparent) 7%,
      color-mix(in srgb, var(--color-contrast-accent) 52%, transparent) 93%,
      transparent 100%
    );
  }

  .page-certification .cert-axis__node:last-child .cert-axis__dot {
    background: var(--color-contrast-accent);
    box-shadow:
      0 0 0 5px color-mix(in srgb, var(--color-contrast-accent) 20%, transparent),
      0 0 0 9px color-mix(in srgb, var(--color-contrast-accent) 8%, transparent);
  }

  .page-certification .cert-cats__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--space-4);
  }

  .page-certification .cert-cat--a { grid-column: span 5; }
  .page-certification .cert-cat--b { grid-column: span 7; }
  .page-certification .cert-cat--c { grid-column: span 7; }
  .page-certification .cert-cat--d { grid-column: span 5; }

  .page-certification .cert-stage {
    display: grid;
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: var(--space-6);
    align-items: start;
    padding-left: 0;
    border-left: 0;
  }

  .page-certification .cert-stage__head {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-1);
    margin-bottom: 0;
    padding-bottom: 0;
    padding-right: var(--space-4);
    border-bottom: 0;
    border-right: var(--border-thin) solid var(--cert-rule);
  }

  .page-certification .cert-stage__count {
    margin-left: 0;
  }
}

@media (min-width: 900px) {
  .page-certification .cert-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.9fr);
    align-items: end;
    gap: var(--space-8);
  }

  .page-certification .cert-hero__panel {
    padding: var(--space-6);
  }

  .page-certification .cert-stages__list {
    gap: var(--section-y);
  }

  .page-certification .cert-cats__grid {
    gap: var(--space-4) var(--space-4);
  }
}

.page-certification img {
  display: block;
  max-width: 100%;
  height: auto;
}