.page-certification {
  --cert-id-w: 96px;
  --cert-ref-w: 176px;
  --cert-rule: color-mix(in srgb, var(--color-ink-muted) 34%, transparent);
  --cert-sub: var(--color-ink-soft);
  --cert-link: var(--color-primary);
  --cert-hover: var(--color-highlight);
  --cert-tag-bg: var(--color-primary-soft);
  --cert-tag-ink: var(--color-primary);
  background-color: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  line-height: var(--leading-body);
  overflow-x: hidden;
}

/* ---------- 首屏号牌区 ---------- */

.page-certification .cert-hero {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  padding-block: var(--space-4) var(--space-8);
}

.page-certification .cert-hero__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.page-certification .cert-hero .breadcrumb {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: color-mix(in srgb, var(--color-primary-ink) 72%, transparent);
}

.page-certification .cert-hero .breadcrumb a {
  color: inherit;
  text-decoration: none;
}

.page-certification .cert-hero .breadcrumb a:hover,
.page-certification .cert-hero .breadcrumb a:focus-visible {
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

.page-certification .cert-hero__scale {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: color-mix(in srgb, var(--color-primary-ink) 68%, transparent);
}

.page-certification .cert-hero__main {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  min-width: 0;
}

.page-certification .cert-hero__eyebrow {
  margin: 0;
  color: color-mix(in srgb, var(--color-primary-ink) 80%, transparent);
}

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

.page-certification .cert-hero__title span {
  display: block;
}

.page-certification .cert-hero__lede {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-primary-ink) 88%, transparent);
}

.page-certification .cert-hero__figures {
  list-style: none;
  margin: var(--space-2) 0 0;
  padding: var(--space-3) 0 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
  border-top: var(--border-thin) solid color-mix(in srgb, var(--color-primary-ink) 34%, transparent);
}

.page-certification .cert-hero__figure {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--text-figure);
  line-height: 0.9;
  letter-spacing: -0.02em;
}

.page-certification .cert-hero__figure-label {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: color-mix(in srgb, var(--color-primary-ink) 78%, transparent);
}

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

.page-certification .cert-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  max-height: 236px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

/* ---------- 分类筛选 ---------- */

.page-certification .cert-filter {
  background-color: var(--color-surface-alt);
  padding-block: var(--space-3);
}

.page-certification .cert-filter__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.page-certification .cert-filter .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-2);
}

.page-certification .cert-filter .filter-chip {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: var(--space-1) var(--space-2);
  border: 0;
  border-radius: var(--radius-sm);
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  cursor: pointer;
  transition: background-color 200ms ease, color 200ms ease;
}

.page-certification .cert-filter .filter-chip:hover {
  background-color: var(--color-highlight);
  color: var(--color-ink);
}

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

.page-certification .cert-filter .filter-chip[aria-pressed="true"],
.page-certification .cert-filter .filter-chip.is-active {
  background-color: var(--color-accent);
  color: var(--color-accent-ink);
}

.page-certification .cert-filter .filter-count {
  font-weight: 700;
  opacity: 0.7;
}

.page-certification .cert-filter .filter-empty {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

/* ---------- 分组色块 ---------- */

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

.page-certification .cert-group--paper {
  background-color: var(--color-surface);
  color: var(--color-ink);
}

.page-certification .cert-group--paper-deep {
  background-color: var(--color-surface-deep);
  color: var(--color-ink);
}

.page-certification .cert-group--deep {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  --cert-rule: var(--color-contrast-line);
  --cert-sub: color-mix(in srgb, var(--color-contrast-ink) 76%, transparent);
  --cert-link: var(--color-contrast-accent);
  --cert-hover: color-mix(in srgb, var(--color-contrast-accent) 16%, transparent);
  --cert-tag-bg: color-mix(in srgb, var(--color-contrast-accent) 24%, transparent);
  --cert-tag-ink: color-mix(in srgb, var(--color-contrast-accent) 80%, var(--color-contrast-ink));
}

.page-certification .cert-group--primary {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  --cert-rule: color-mix(in srgb, var(--color-primary-ink) 32%, transparent);
  --cert-sub: color-mix(in srgb, var(--color-primary-ink) 80%, transparent);
  --cert-link: var(--color-primary-ink);
  --cert-hover: color-mix(in srgb, var(--color-primary-ink) 16%, transparent);
  --cert-tag-bg: color-mix(in srgb, var(--color-primary-ink) 20%, transparent);
  --cert-tag-ink: var(--color-primary-ink);
}

.page-certification .cert-group__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.page-certification .cert-group__index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--cert-sub);
}

.page-certification .cert-group__title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-2xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: inherit;
}

.page-certification .cert-group__note {
  margin: 0;
  max-width: 44ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--cert-sub);
}

/* ---------- 目录条目 ---------- */

.page-certification .cert-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-certification .cert-entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2);
  padding-block: var(--space-4);
  border-top: var(--border-thin) solid var(--cert-rule);
  transition: background-color 220ms ease;
}

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

.page-certification .cert-entry__id {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--text-lg);
  line-height: 1.1;
  letter-spacing: 0.04em;
  color: var(--cert-link);
}

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

.page-certification .cert-entry__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-2);
}

.page-certification .cert-tag {
  display: inline-block;
  padding: 2px var(--space-1);
  border-radius: var(--radius-sm);
  background-color: var(--cert-tag-bg);
  color: var(--cert-tag-ink);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
}

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

.page-certification .cert-entry__title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: 1.3;
  color: inherit;
}

.page-certification .cert-entry__desc {
  margin: 0 0 var(--space-2);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: inherit;
}

.page-certification .cert-entry__note {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--cert-sub);
}

.page-certification .cert-entry__ref {
  font-size: var(--text-sm);
  line-height: 1.6;
}

.page-certification .cert-entry__ref-label {
  display: block;
  margin-bottom: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--cert-sub);
}

.page-certification .cert-entry__ref a {
  display: block;
  color: var(--cert-link);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-certification .cert-entry__ref a:hover,
.page-certification .cert-entry__ref a:focus-visible {
  text-decoration-thickness: 2px;
}

.page-certification .cert-entry.is-hit,
.page-certification .cert-entry:hover,
.page-certification .cert-entry:focus-within {
  background-color: var(--cert-hover);
}

/* ---------- 图版与收束句 ---------- */

.page-certification .cert-plate {
  margin: var(--space-6) 0 0;
  max-width: 340px;
}

.page-certification .cert-plate--wide {
  max-width: 400px;
}

.page-certification .cert-plate img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.page-certification .cert-plate figcaption {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--cert-sub);
}

.page-certification .cert-outro {
  margin: var(--space-6) 0 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--cert-sub);
}

.page-certification .cert-outro a {
  color: var(--cert-link);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 断点 ---------- */

@media (min-width: 720px) {
  .page-certification .cert-group__head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 44ch);
    column-gap: var(--space-6);
    row-gap: var(--space-2);
    align-items: end;
  }

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

@media (min-width: 880px) {
  .page-certification .cert-hero {
    padding-block: var(--space-6) var(--section-y-lg);
  }

  .page-certification .cert-hero__grid {
    grid-template-columns: var(--cert-id-w) minmax(0, 1fr);
    gap: var(--space-6);
    align-items: start;
  }

  .page-certification .cert-hero__scale {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: var(--space-1);
    padding-left: var(--space-2);
    border-left: var(--border-thin) solid color-mix(in srgb, var(--color-primary-ink) 32%, transparent);
  }

  .page-certification .cert-hero__media img {
    max-height: 268px;
  }

  .page-certification .cert-entry {
    grid-template-columns: var(--cert-id-w) minmax(0, 1fr) var(--cert-ref-w);
    gap: var(--space-4);
    align-items: start;
    padding-inline: var(--space-3);
    margin-inline: calc(var(--space-3) * -1);
  }

  .page-certification .cert-entry__ref {
    padding-top: var(--space-1);
  }

  .page-certification .cert-plate {
    margin-top: var(--space-8);
  }
}

@media (min-width: 1040px) {
  .page-certification .cert-group {
    padding-block: var(--section-y-lg);
  }
}