.page-certification-standards {
  --std-rail: 88px;
  --std-band-odd: var(--color-surface);
  --std-band-even: var(--color-surface-alt);
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-certification-standards .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  padding-top: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.page-certification-standards .breadcrumb a {
  color: var(--color-ink-muted);
  text-decoration: none;
  border-bottom: var(--border-thin) solid transparent;
}

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

/* ---------- 首屏 ---------- */
.page-certification-standards .std-hero {
  padding: var(--space-6) 0 var(--space-4);
}

.page-certification-standards .std-hero__kicker {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.page-certification-standards .std-hero h1 {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  max-width: 26ch;
  text-wrap: balance;
}

.page-certification-standards .std-hero__lede {
  margin: 0;
  max-width: 58ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 顶部窄横幅 ---------- */
.page-certification-standards .std-banner {
  position: relative;
  margin: 0;
  background: var(--color-surface-deep);
  overflow: hidden;
}

.page-certification-standards .std-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 1;
  object-fit: cover;
}

.page-certification-standards .std-banner__scrim {
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
  pointer-events: none;
}

.page-certification-standards .std-banner__cap {
  position: absolute;
  right: var(--space-3);
  bottom: var(--space-3);
  left: var(--space-3);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: baseline;
  color: var(--color-contrast-ink);
}

.page-certification-standards .std-banner__cap-k {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-contrast-accent);
}

.page-certification-standards .std-banner__cap-v {
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
}

/* ---------- 定位说明 ---------- */
.page-certification-standards .std-position {
  padding: var(--section-y) 0;
  background: var(--color-surface-alt);
}

.page-certification-standards .std-position__inner {
  display: grid;
  gap: var(--space-6);
}

.page-certification-standards .std-position h2 {
  margin: var(--space-2) 0 var(--space-4);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
}

.page-certification-standards .std-position__body p {
  margin: 0 0 var(--space-3);
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-certification-standards .std-position__body p:last-child {
  margin-bottom: 0;
}

.page-certification-standards .std-position__aside {
  padding: var(--space-4);
  background: var(--color-surface-deep);
}

.page-certification-standards .std-position__aside-title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}

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

.page-certification-standards .std-position__steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-2);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-certification-standards .std-position__steps .mono {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-primary);
  letter-spacing: 0.06em;
}

/* ---------- 六条清单 ---------- */
.page-certification-standards .std-list {
  padding: 0;
}

.page-certification-standards .std-band {
  background: var(--std-band-odd);
}

.page-certification-standards .std-band--alt {
  background: var(--std-band-even);
}

.page-certification-standards .std-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3);
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
}

.page-certification-standards .std-item__rail {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.page-certification-standards .std-item__num {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-primary);
}

.page-certification-standards .std-item__scale {
  flex: 1;
  height: var(--border-thick);
  background: var(--color-line);
}

.page-certification-standards .std-item__head {
  margin-bottom: var(--space-2);
}

.page-certification-standards .std-item__name {
  margin: var(--space-2) 0 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
}

.page-certification-standards .std-item__req {
  margin: 0 0 var(--space-4);
  max-width: var(--measure);
  color: var(--color-ink);
}

.page-certification-standards .std-item__meta {
  display: grid;
  gap: var(--space-3);
  margin: 0;
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-certification-standards .std-item__meta dt {
  margin-bottom: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.page-certification-standards .std-item__meta dd {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-certification-standards .std-item__meta div:first-child dd::before,
.page-certification-standards .std-item__meta div:nth-child(2) dd::before {
  content: "";
  display: inline-block;
  width: var(--space-1);
  height: var(--space-1);
  margin-right: var(--space-1);
  vertical-align: 0.12em;
}

.page-certification-standards .std-item__meta div:first-child dd::before {
  background: var(--color-primary);
}

.page-certification-standards .std-item__meta div:nth-child(2) dd::before {
  background: var(--color-accent);
}

/* ---------- 组间过渡 ---------- */
.page-certification-standards .std-interlude {
  background: var(--color-surface-deep);
  padding: var(--space-6) 0;
}

.page-certification-standards .std-interlude__inner {
  display: grid;
  gap: var(--space-4);
  align-items: center;
}

.page-certification-standards .std-interlude__copy p:last-child {
  margin: 0;
  max-width: 46ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-certification-standards .std-interlude__media {
  margin: 0;
  background: var(--color-contrast-surface);
}

.page-certification-standards .std-interlude__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 5;
}

/* ---------- 依赖关系 ---------- */
.page-certification-standards .std-deps {
  padding: var(--section-y) 0;
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-certification-standards .std-deps .eyebrow {
  display: block;
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-contrast-accent);
}

.page-certification-standards .std-deps h2 {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.page-certification-standards .std-deps__lede {
  margin: 0 0 var(--space-6);
  max-width: 62ch;
  color: var(--color-contrast-ink);
  opacity: 0.82;
}

.page-certification-standards .std-deps__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
}

.page-certification-standards .std-deps__item {
  position: relative;
  padding: 0 0 var(--space-6) var(--space-6);
  margin: 0;
}

.page-certification-standards .std-deps__item::before {
  content: "";
  position: absolute;
  left: 5px;
  top: var(--space-3);
  bottom: 0;
  width: var(--border-thin);
  background: var(--color-contrast-line);
}

.page-certification-standards .std-deps__item::after {
  content: "";
  position: absolute;
  left: 0;
  top: var(--space-1);
  width: 11px;
  height: 11px;
  background: var(--color-contrast-accent);
}

.page-certification-standards .std-deps__item:last-child {
  padding-bottom: 0;
}

.page-certification-standards .std-deps__item:last-child::before {
  display: none;
}

.page-certification-standards .std-deps__pair {
  display: block;
  margin-bottom: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-contrast-accent);
  white-space: nowrap;
}

.page-certification-standards .std-deps__item p {
  margin: 0;
  max-width: 64ch;
  color: var(--color-contrast-ink);
  opacity: 0.86;
}

/* ---------- 检查与记录 ---------- */
.page-certification-standards .std-audit {
  background: var(--color-surface);
}

.page-certification-standards .std-audit__banner {
  position: relative;
  margin: 0;
  background: var(--color-surface-deep);
  overflow: hidden;
}

.page-certification-standards .std-audit__banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1260 / 520;
  object-fit: cover;
}

.page-certification-standards .std-audit__banner figcaption {
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
  background: var(--color-surface-deep);
}

.page-certification-standards .std-audit__inner {
  padding-top: var(--section-y);
  padding-bottom: var(--section-y);
}

.page-certification-standards .std-audit__head h2 {
  margin: var(--space-2) 0 var(--space-3);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
}

.page-certification-standards .std-audit__head p:last-child {
  margin: 0 0 var(--space-6);
  max-width: 66ch;
  color: var(--color-ink-soft);
}

.page-certification-standards .std-audit__grid {
  display: grid;
  gap: var(--space-3);
}

.page-certification-standards .std-audit__cell {
  padding: var(--space-4);
  background: var(--color-primary-soft);
  border-top: var(--border-thick) solid var(--color-primary);
}

.page-certification-standards .std-audit__cell--accent {
  background: var(--color-highlight);
  border-top-color: var(--color-accent);
}

.page-certification-standards .std-audit__cell-num {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  line-height: 1;
  color: var(--color-primary);
}

.page-certification-standards .std-audit__cell--accent .std-audit__cell-num {
  color: var(--color-accent);
}

.page-certification-standards .std-audit__cell h3 {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  letter-spacing: 0.02em;
}

.page-certification-standards .std-audit__cell p:last-child {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-certification-standards .std-audit__note {
  margin: var(--space-6) 0 0;
  padding-left: var(--space-3);
  border-left: var(--border-thick) solid var(--color-accent);
  max-width: 68ch;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 相邻入口 ---------- */
.page-certification-standards .std-related {
  padding: var(--section-y) 0 var(--section-y-lg);
  background: var(--color-surface-alt);
}

.page-certification-standards .std-related h2 {
  margin: var(--space-2) 0 var(--space-3);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
}

.page-certification-standards .std-related__lede {
  margin: 0 0 var(--space-6);
  max-width: 62ch;
  color: var(--color-ink-soft);
}

.page-certification-standards .std-related__grid {
  display: grid;
  gap: var(--space-2);
}

.page-certification-standards .std-related__link {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: var(--space-3);
  row-gap: var(--space-1);
  padding: var(--space-4) var(--space-3);
  background: var(--color-surface);
  text-decoration: none;
  color: var(--color-ink);
  border-left: var(--border-thick) solid var(--color-primary);
}

.page-certification-standards .std-related__link:hover,
.page-certification-standards .std-related__link:focus-visible {
  background: var(--color-primary-soft);
  border-left-color: var(--color-accent);
}

.page-certification-standards .std-related__link-idx {
  grid-row: 1 / span 2;
  align-self: start;
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  line-height: 1;
  color: var(--color-ink-muted);
}

.page-certification-standards .std-related__link-title {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  letter-spacing: 0.02em;
}

.page-certification-standards .std-related__link-desc {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-certification-standards {
    --std-rail: 104px;
  }

  .page-certification-standards .std-item {
    grid-template-columns: var(--std-rail) minmax(0, 1fr);
    gap: var(--space-6);
    padding-top: var(--space-8);
    padding-bottom: var(--space-8);
  }

  .page-certification-standards .std-item__rail {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
    align-self: stretch;
  }

  .page-certification-standards .std-item__scale {
    flex: 1;
    width: var(--border-thick);
    height: auto;
    min-height: var(--space-6);
  }

  .page-certification-standards .std-item__meta {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4) var(--space-6);
  }

  .page-certification-standards .std-interlude__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 4fr);
    gap: var(--space-8);
  }

  .page-certification-standards .std-position__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: var(--space-8);
  }

  .page-certification-standards .std-audit__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-3);
  }

  .page-certification-standards .std-related__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-certification-standards .std-related__link {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: auto auto auto;
    row-gap: var(--space-2);
  }

  .page-certification-standards .std-related__link-idx {
    grid-row: auto;
  }
}

@media (min-width: 1100px) {
  .page-certification-standards {
    --std-rail: 132px;
  }

  .page-certification-standards .std-hero {
    padding-top: var(--section-y);
  }

  .page-certification-standards .std-hero h1 {
    font-size: var(--text-2xl);
    max-width: 22ch;
  }

  .page-certification-standards .std-hero__lede {
    font-size: var(--text-lg);
    max-width: 48ch;
  }

  .page-certification-standards .std-item__name {
    font-size: var(--text-xl);
  }

  .page-certification-standards .std-banner__cap {
    left: var(--space-6);
    right: var(--space-6);
    bottom: var(--space-4);
  }
}

@media (min-width: 1400px) {
  .page-certification-standards .std-banner img,
  .page-certification-standards .std-audit__banner img {
    max-height: 560px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-certification-standards .std-related__link {
    transition: none;
  }
}