.page-certification-standards .stdx-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-top: var(--space-4);
}

.page-certification-standards .stdx-h1 {
  margin: var(--space-2) 0 var(--space-3);
  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-certification-standards .stdx-h2 {
  margin: var(--space-2) 0 var(--space-4);
  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-standards .stdx-hero__media {
  margin: 0;
}

.page-certification-standards .stdx-hero__media img,
.page-certification-standards .stdx-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: var(--border-thin) solid var(--color-line);
}

.page-certification-standards .stdx-hero__caption {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-soft);
}

/* ---------- 六项标准总览 ---------- */

.page-certification-standards .stdx-overview {
  position: relative;
  margin-top: var(--space-8);
  padding: var(--space-4) 0;
  border-top: var(--border-thick) solid var(--color-primary);
  border-bottom: var(--border-thick) solid var(--color-primary);
}

.page-certification-standards .stdx-overview::before,
.page-certification-standards .stdx-overview::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: var(--border-thin);
  background: var(--color-primary);
}

.page-certification-standards .stdx-overview::before {
  top: 4px;
}

.page-certification-standards .stdx-overview::after {
  bottom: 4px;
}

.page-certification-standards .stdx-overview__caption {
  margin: 0 0 var(--space-3);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-ink-soft);
}

.page-certification-standards .stdx-overview__list {
  display: grid;
  grid-template-columns: 1fr;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-certification-standards .stdx-ov__link {
  display: grid;
  grid-template-columns: 2.75rem minmax(0, 1fr);
  gap: var(--space-1) var(--space-2);
  align-items: baseline;
  min-height: 44px;
  padding: var(--space-3) var(--space-1);
  border-bottom: var(--border-thin) solid var(--color-line);
  color: var(--color-ink);
  text-decoration: none;
  transition: background-color 240ms ease;
}

.page-certification-standards .stdx-overview__list > li:last-child .stdx-ov__link {
  border-bottom: 0;
}

.page-certification-standards .stdx-ov__no {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  color: var(--color-primary);
}

.page-certification-standards .stdx-ov__name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: 0.02em;
}

.page-certification-standards .stdx-ov__scope {
  grid-column: 2;
  font-size: var(--text-sm);
  line-height: 1.65;
  color: var(--color-ink-soft);
}

.page-certification-standards .stdx-ov__link:hover {
  background: var(--color-primary-soft);
}

.page-certification-standards .stdx-ov__link:hover .stdx-ov__no {
  color: var(--color-accent);
}

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

/* ---------- 分组 ---------- */

.page-certification-standards .stdx-head__body {
  min-width: 0;
}

.page-certification-standards .stdx-figure {
  margin: var(--space-6) 0 0;
}

.page-certification-standards .stdx-list {
  margin-top: var(--space-6);
  border-top: var(--border-thick) solid var(--color-line);
}

.page-certification-standards .stdx-std {
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-certification-standards .stdx-std__summary {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr);
  gap: var(--space-1) var(--space-2);
  align-items: baseline;
  min-height: 44px;
  padding: var(--space-4) var(--space-2);
  list-style: none;
  cursor: pointer;
  transition: background-color 240ms ease;
}

.page-certification-standards .stdx-std__summary::-webkit-details-marker {
  display: none;
}

.page-certification-standards .stdx-std__summary:hover {
  background: var(--color-surface-alt);
}

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

.page-certification-standards .stdx-std[open] > .stdx-std__summary {
  background: var(--color-highlight);
}

.page-certification-standards .stdx-std__no {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  color: var(--color-primary);
}

.page-certification-standards .stdx-std[open] > .stdx-std__summary .stdx-std__no {
  color: var(--color-accent);
}

.page-certification-standards .stdx-std__name {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: 0.02em;
  color: var(--color-ink);
}

.page-certification-standards .stdx-std__hint {
  grid-column: 2;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-soft);
}

.page-certification-standards .stdx-std__body {
  padding: var(--space-2) var(--space-2) var(--space-6);
}

/* ---------- 定义列表 ---------- */

.page-certification-standards .stdx-defs {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 0;
}

.page-certification-standards .stdx-defs dt {
  margin-top: var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.page-certification-standards .stdx-defs dt:first-child {
  margin-top: 0;
}

.page-certification-standards .stdx-defs dd {
  margin: var(--space-1) 0 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-certification-standards .stdx-steps {
  display: grid;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-certification-standards .stdx-steps li {
  line-height: 1.7;
}

.page-certification-standards .stdx-mark {
  margin-right: 0.35em;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.02em;
  color: var(--color-accent);
}

.page-certification-standards .stdx-defs dd.stdx-fail {
  border: var(--border-thin) solid var(--color-primary);
  border-left-width: var(--border-thick);
  padding: var(--space-2) var(--space-3);
  background: var(--color-primary-soft);
  color: var(--color-ink);
}

/* ---------- 衔接区 ---------- */

.page-certification-standards .stdx-bridge {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.page-certification-standards .stdx-bridge__text p {
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-certification-standards .stdx-link {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-accent);
}

.page-certification-standards .stdx-link:hover {
  border-bottom-width: var(--border-thick);
}

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

.page-certification-standards .stdx-side__list {
  display: grid;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-certification-standards .stdx-side__list li {
  display: grid;
  gap: var(--space-1);
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
  line-height: 1.65;
  color: var(--color-ink-soft);
}

.page-certification-standards .stdx-side__list li:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-certification-standards .stdx-side__list a {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-primary);
}

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

/* ---------- 行动出口 ---------- */

.page-certification-standards .stdx-out__inner {
  max-width: var(--measure);
}

.page-certification-standards .stdx-out .kicker {
  color: var(--color-contrast-accent);
}

.page-certification-standards .stdx-out__title {
  color: var(--color-contrast-ink);
}

.page-certification-standards .stdx-out__lede {
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
}

.page-certification-standards .stdx-out__tags {
  margin-top: var(--space-4);
}

.page-certification-standards .stdx-out__note {
  margin: var(--space-3) 0 var(--space-4);
  font-size: var(--text-sm);
  line-height: 1.65;
  color: var(--color-ink-muted);
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-certification-standards .stdx-overview__list {
    grid-template-columns: 1fr 1fr;
    column-gap: var(--space-6);
  }

  .page-certification-standards .stdx-overview__list > li:nth-last-child(2) .stdx-ov__link {
    border-bottom: 0;
  }

  .page-certification-standards .stdx-std__summary {
    grid-template-columns: 2.5rem minmax(0, 1fr) auto;
    padding: var(--space-4) var(--space-3);
  }

  .page-certification-standards .stdx-std__hint {
    grid-column: 3;
    align-self: baseline;
  }

  .page-certification-standards .stdx-std__body {
    padding: var(--space-3) var(--space-3) var(--space-6);
  }

  .page-certification-standards .stdx-defs {
    grid-template-columns: 7.5rem minmax(0, 1fr);
    column-gap: var(--space-4);
    row-gap: var(--space-4);
  }

  .page-certification-standards .stdx-defs dt,
  .page-certification-standards .stdx-defs dt:first-child {
    margin-top: 0;
    padding-top: 4px;
  }

  .page-certification-standards .stdx-defs dd {
    margin-top: 0;
  }

  .page-certification-standards .stdx-steps {
    gap: var(--space-2);
  }
}

@media (min-width: 900px) {
  .page-certification-standards .stdx-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-certification-standards .stdx-h1 {
    font-size: var(--text-4xl);
  }

  .page-certification-standards .stdx-head {
    align-items: start;
  }

  .page-certification-standards .stdx-bridge {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-certification-standards .stdx-ov__link {
    padding: var(--space-3) var(--space-2);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-certification-standards .stdx-ov__link,
  .page-certification-standards .stdx-std__summary {
    transition: none;
  }
}