.page-certification {
  background-color: var(--color-surface);
  background-image: radial-gradient(circle, var(--color-line) 0.75px, transparent 0.75px);
  background-size: 21px 21px;
  background-position: 0 0;
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  overflow-x: hidden;
}

.page-certification *,
.page-certification *::before,
.page-certification *::after {
  box-sizing: border-box;
}

.page-certification .wrap {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.page-certification .sec {
  padding-block: var(--section-y);
}

.page-certification .sec--lg {
  padding-block: var(--section-y-lg);
}

.page-certification .prose {
  max-width: var(--measure);
}

.page-certification .prose p {
  margin: 0 0 var(--space-3);
}

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

.page-certification a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px solid var(--color-primary-soft);
  transition: border-color 140ms linear, color 140ms linear;
}

.page-certification a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.page-certification :focus-visible {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: 2px;
}

/* ---------- 面包屑 ---------- */
.page-certification .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  margin-bottom: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-certification .crumbs a {
  border-bottom: 1px dotted var(--color-line);
}

.page-certification .crumbs__sep {
  color: var(--color-ink-muted);
}

/* ---------- 刻度装饰 ---------- */
.page-certification .cert-ruler {
  height: 9px;
  border-top: var(--border-thin) solid var(--color-primary);
  background-image: repeating-linear-gradient(
    to right,
    var(--color-primary) 0 1px,
    transparent 1px 7px
  );
  background-size: 100% 5px;
  background-repeat: repeat-x;
}

/* ---------- 首屏 ---------- */
.page-certification .cert-hero {
  padding-block: var(--section-y-lg) var(--section-y);
  background: transparent;
}

.page-certification .cert-hero__frame {
  position: relative;
  border: var(--border-thin) solid var(--color-primary);
  background: var(--color-surface);
  padding: var(--space-4) var(--space-3) var(--space-3);
}

.page-certification .cert-hero__frame .cert-ruler {
  height: 5px;
  border-top-color: var(--color-primary);
  background-image: repeating-linear-gradient(
    to right,
    var(--color-line) 0 1px,
    transparent 1px 7px
  );
  background-size: 100% 5px;
}

.page-certification .cert-hero__top {
  padding-block: var(--space-4) var(--space-3);
}

.page-certification .cert-hero__kicker {
  margin: 0 0 var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.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: 1.06;
  letter-spacing: -0.015em;
  color: var(--color-ink);
  max-width: 15ch;
}

.page-certification .cert-hero__lede {
  margin: 0;
  max-width: 46ch;
  font-size: var(--text-lg);
  line-height: 1.55;
  color: var(--color-ink-soft);
}

.page-certification .cert-hero__figures {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: var(--border-thin) solid var(--color-line);
  border-left: var(--border-thin) solid var(--color-line);
}

.page-certification .cert-fig {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: var(--space-3) var(--space-2);
  border-right: var(--border-thin) solid var(--color-line);
  border-bottom: var(--border-thin) solid var(--color-line);
  min-width: 0;
}

.page-certification .cert-fig__num {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-primary);
}

.page-certification .cert-fig:nth-child(3) .cert-fig__num,
.page-certification .cert-fig:nth-child(4) .cert-fig__num {
  color: var(--color-accent);
}

.page-certification .cert-fig__unit {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  color: var(--color-ink);
}

.page-certification .cert-fig__note {
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
}

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

.page-certification .figure {
  margin: 0;
}

.page-certification .figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface-alt);
}

.page-certification .figure__cap {
  margin-top: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.05em;
  color: var(--color-ink-muted);
}

/* ---------- 区块标记 ---------- */
.page-certification .sec-mark {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.page-certification .sec-mark__no {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  letter-spacing: 0.1em;
  color: var(--color-primary);
}

.page-certification .sec-mark__rule {
  flex: 1 1 auto;
  min-width: var(--space-6);
  height: 0;
  border-top: var(--border-thin) dotted var(--color-line);
}

.page-certification .sec-mark__label {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
  white-space: nowrap;
}

.page-certification .sec-title {
  margin: 0 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-certification .sec-lede {
  margin: 0 0 var(--space-4);
  max-width: 60ch;
  color: var(--color-ink-soft);
}

/* ---------- 旅程刻度与环节面板 ---------- */
.page-certification .cert-track {
  background: transparent;
}

.page-certification .cert-tabs {
  margin-top: var(--space-4);
}

.page-certification .cert-rail {
  display: flex;
  border-top: var(--border-thin) solid var(--color-primary);
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-certification .cert-node {
  position: relative;
  flex: 1 1 0;
  min-width: 158px;
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: var(--space-3) var(--space-2) var(--space-3);
  border: 0;
  border-left: var(--border-thin) dotted var(--color-line);
  border-radius: 0;
  background: transparent;
  text-align: left;
  cursor: pointer;
  scroll-snap-align: start;
  transition: background-color 140ms linear, color 140ms linear;
}

.page-certification .cert-node:last-child {
  border-right: var(--border-thin) dotted var(--color-line);
}

.page-certification .cert-node::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: var(--border-thick);
  height: 7px;
  background: var(--color-line);
}

.page-certification .cert-node:hover {
  background: var(--color-surface-alt);
}

.page-certification .cert-node[aria-selected="true"] {
  background: var(--color-primary-soft);
  outline: var(--border-thin) solid var(--color-focus);
  outline-offset: -1px;
}

.page-certification .cert-node[aria-selected="true"]::before {
  height: 14px;
  background: var(--color-accent);
}

.page-certification .cert-node__no {
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  color: var(--color-primary);
}

.page-certification .cert-node[aria-selected="true"] .cert-node__no {
  color: var(--color-accent);
}

.page-certification .cert-node__name {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  line-height: 1.35;
  color: var(--color-ink);
}

.page-certification .cert-node__phase {
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}

.page-certification .cert-panel {
  margin-top: var(--space-4);
  padding-left: var(--space-3);
  border-left: var(--border-thick) solid var(--color-accent);
  background: transparent;
}

.page-certification .cert-panel__facts {
  display: grid;
  gap: 0;
  margin-bottom: var(--space-4);
  border-top: var(--border-thin) dotted var(--color-line);
}

.page-certification .cert-fact {
  display: grid;
  grid-template-columns: minmax(88px, 120px) 1fr;
  gap: var(--space-2);
  align-items: baseline;
  margin: 0;
  padding: var(--space-2) 0;
  border-bottom: var(--border-thin) dotted var(--color-line);
}

.page-certification .cert-fact__k {
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
}

.page-certification .cert-fact__v {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

/* ---------- 结算节点（深色对比区） ---------- */
.page-certification .cert-cycle {
  background: transparent;
}

.page-certification .cert-cycle__frame {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border: var(--border-thin) solid var(--color-contrast-line);
  padding: var(--space-4) var(--space-3) var(--space-4);
  background-image: linear-gradient(180deg, rgba(141, 104, 228, 0.14) 0%, rgba(15, 18, 24, 0) 42%);
}

.page-certification .cert-cycle__frame .sec-mark__no {
  color: var(--color-contrast-accent);
}

.page-certification .cert-cycle__frame .sec-mark__rule {
  border-top-color: var(--color-contrast-line);
}

.page-certification .cert-cycle__frame .sec-mark__label {
  color: var(--color-contrast-accent);
}

.page-certification .cert-cycle__frame .sec-title {
  color: var(--color-contrast-ink);
}

.page-certification .cert-cycle__lede {
  margin: 0 0 var(--space-4);
  max-width: 58ch;
  color: var(--color-contrast-ink);
  opacity: 0.82;
}

.page-certification .cert-nodes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-4);
}

.page-certification .cert-nodes__item {
  border-top: var(--border-thin) solid var(--color-contrast-line);
  padding-top: var(--space-2);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.page-certification .cert-nodes__item.is-current {
  border-top: var(--border-thick) solid var(--color-contrast-accent);
}

.page-certification .cert-nodes__idx {
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-contrast-line);
}

.page-certification .cert-nodes__item.is-current .cert-nodes__idx {
  color: var(--color-contrast-accent);
}

.page-certification .cert-nodes__day {
  font-size: var(--text-lg);
  letter-spacing: 0.04em;
  color: var(--color-contrast-ink);
}

.page-certification .cert-nodes__title {
  margin: var(--space-1) 0 0;
  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-certification .cert-nodes__desc {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.72;
  color: var(--color-contrast-ink);
  opacity: 0.78;
}

.page-certification .cert-cycle__fig {
  margin-top: var(--space-4);
}

.page-certification .cert-cycle__frame .figure img {
  border-color: var(--color-contrast-line);
  background: var(--color-contrast-surface);
}

.page-certification .cert-cycle__frame .figure__cap {
  color: var(--color-contrast-ink);
  opacity: 0.66;
}

/* ---------- 责任角色 ---------- */
.page-certification .cert-roles-sec {
  background: transparent;
}

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

.page-certification .cert-roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-certification .cert-role {
  padding: var(--space-3) var(--space-3);
  border-bottom: var(--border-thin) dotted var(--color-line);
  border-left: var(--border-thin) dotted var(--color-line);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.page-certification .cert-role__code {
  font-size: var(--text-sm);
  letter-spacing: 0.16em;
  color: var(--color-accent);
}

.page-certification .cert-role__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-role__desc {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.72;
  color: var(--color-ink-soft);
}

/* ---------- 口径偏差 ---------- */
.page-certification .cert-handling {
  background: transparent;
}

.page-certification .cert-acc {
  border-top: var(--border-thin) solid var(--color-line);
}

.page-certification .cert-acc__title {
  flex: 1 1 auto;
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  line-height: 1.45;
  color: var(--color-ink);
  text-align: left;
}

.page-certification .acc__item {
  border-bottom: var(--border-thin) dotted var(--color-line);
}

.page-certification .acc__item .acc__btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  cursor: pointer;
  transition: background-color 140ms linear;
}

.page-certification .acc__item .acc__btn:hover {
  background: var(--color-surface-alt);
}

.page-certification .acc__item .acc__no {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
  transition: color 140ms linear;
}

.page-certification .acc__item .acc__btn[aria-expanded="true"] .acc__no {
  color: var(--color-accent);
}

.page-certification .acc__panel {
  padding: 0 0 var(--space-4) var(--space-4);
  max-width: var(--measure);
  color: var(--color-ink-soft);
  font-size: var(--text-sm);
  line-height: 1.78;
}

.page-certification .acc__panel p {
  margin: 0;
}

/* ---------- 交付物 ---------- */
.page-certification .cert-deliver {
  background: var(--color-surface-alt);
  border-top: var(--border-thin) solid var(--color-line);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-certification .cert-deliver__list {
  list-style: none;
  margin: 0 0 var(--space-4);
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-certification .cert-deliver__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-1) var(--space-3);
  align-items: baseline;
  padding: var(--space-3) 0;
  border-bottom: var(--border-thin) dotted var(--color-line);
}

.page-certification .cert-deliver__no {
  font-size: var(--text-sm);
  letter-spacing: 0.12em;
  color: var(--color-primary);
}

.page-certification .cert-deliver__name {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-certification .cert-deliver__desc {
  grid-column: 2 / -1;
  font-size: var(--text-sm);
  line-height: 1.72;
  color: var(--color-ink-soft);
}

.page-certification .cert-out {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-3) 0 0;
  border-top: var(--border-thick) solid var(--color-primary);
}

.page-certification .cert-out__text {
  margin: 0;
  max-width: 68ch;
  color: var(--color-ink);
}

.page-certification .cert-out__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.page-certification .cert-out__links .btn {
  border-bottom: var(--border-thin) solid transparent;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-certification .cert-hero__frame {
    padding: var(--space-4) var(--space-4) var(--space-3);
  }

  .page-certification .cert-hero__figures {
    margin-top: 0;
  }

  .page-certification .cert-cycle__frame {
    padding: var(--space-6) var(--space-4);
  }

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

  .page-certification .cert-roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-certification .cert-deliver__item {
    grid-template-columns: auto minmax(200px, 22ch) 1fr;
    align-items: start;
  }

  .page-certification .cert-deliver__desc {
    grid-column: 3 / -1;
  }

  .page-certification .cert-out {
    flex-direction: row;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-4);
  }

  .page-certification .cert-out__text {
    flex: 1 1 auto;
  }

  .page-certification .cert-out__links {
    flex: 0 0 auto;
    flex-direction: column;
    align-items: stretch;
  }
}

@media (min-width: 1024px) {
  .page-certification .cert-hero__top {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(300px, 420px);
    gap: var(--space-6);
    align-items: end;
    padding-block: var(--space-4) var(--space-4);
  }

  .page-certification .cert-hero__figures {
    margin-top: 0;
  }

  .page-certification .cert-node {
    min-width: 0;
  }

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

  .page-certification .cert-roles {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-certification .cert-role:nth-child(2) {
    padding-top: var(--space-4);
  }

  .page-certification .cert-role:nth-child(3) {
    padding-top: var(--space-2);
  }
}

@media (max-width: 420px) {
  .page-certification .cert-hero__figures {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-certification .cert-fact {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-certification a,
  .page-certification .cert-node,
  .page-certification .acc__item .acc__btn,
  .page-certification .acc__item .acc__no {
    transition: none;
  }
}