.blog-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(4.5rem, 9vw, 7.5rem);
  color: var(--color-text);
  background:
    radial-gradient(circle at 78% 28%, color-mix(in srgb, var(--color-cyan) 24%, transparent), transparent 34%),
    linear-gradient(135deg, var(--color-night), var(--color-panel));
  border-bottom: 1px solid var(--color-border);
}

.blog-hero::after {
  position: absolute;
  right: -8rem;
  bottom: -13rem;
  width: 34rem;
  height: 34rem;
  border: 1px solid color-mix(in srgb, var(--color-cyan) 38%, transparent);
  border-radius: 50%;
  content: "";
  pointer-events: none;
}

.blog-hero-layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(16rem, 0.65fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: end;
}

.blog-hero-copy {
  max-width: 50rem;
}

.blog-hero h1 {
  max-width: 12ch;
  margin-block: 0.55rem 1.25rem;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 1.75rem + 2vw, 3rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.045em;
}

.blog-hero-copy > p:last-child {
  max-width: 42rem;
  margin: 0;
  color: var(--color-text-muted);
  font-size: clamp(1rem, 0.94rem + 0.3vw, 1.2rem);
  line-height: 1.8;
}

.blog-hero-index {
  display: grid;
  gap: 0.65rem;
  padding: 0.9rem;
  background: color-mix(in srgb, var(--color-panel-raised) 82%, transparent);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: 0 1.2rem 3.5rem color-mix(in srgb, var(--color-night) 42%, transparent);
  backdrop-filter: blur(0.8rem);
}

.blog-hero-index span {
  display: flex;
  gap: 0.9rem;
  align-items: center;
  min-height: 3.25rem;
  padding-inline: 1rem;
  color: var(--color-text-muted);
  background: color-mix(in srgb, var(--color-panel) 78%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-border) 74%, transparent);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
}

.blog-hero-index strong {
  color: var(--color-lime);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
}

.blog-list-section {
  padding-block: var(--section-space);
  color: var(--color-ink);
  background: var(--color-surface);
}

.blog-list-heading {
  display: flex;
  gap: 2rem;
  align-items: end;
  justify-content: space-between;
  margin-bottom: 1.7rem;
}

.blog-list-heading h2 {
  margin: 0.35rem 0 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(2rem, 1.65rem + 1.5vw, 3rem);
  line-height: 1.15;
}

.blog-result-count {
  margin: 0;
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.blog-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid color-mix(in srgb, var(--color-border) 48%, transparent);
}

.blog-filter-button {
  position: relative;
  min-height: 2.55rem;
  padding: 0.55rem 1rem;
  color: var(--color-ink-muted);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  background: var(--color-surface-pure);
  border: 1px solid color-mix(in srgb, var(--color-border) 62%, transparent);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition:
    color 160ms ease,
    border-color 160ms ease,
    box-shadow 160ms ease,
    transform 160ms ease;
}

.blog-filter-button::after {
  position: absolute;
  right: 0.8rem;
  bottom: 0.28rem;
  left: 0.8rem;
  height: 2px;
  background: var(--color-lime);
  border-radius: var(--radius-xs);
  content: "";
  opacity: 0;
  transform: scaleX(0.45);
  transition:
    opacity 160ms ease,
    transform 160ms ease;
}

.blog-filter-button:hover,
.blog-filter-button:focus-visible,
.blog-filter-button.is-active {
  color: var(--color-text);
  border-color: var(--color-accent);
  box-shadow: 0 0.5rem 1.5rem color-mix(in srgb, var(--color-accent) 12%, transparent);
  transform: translateY(-1px);
}

.blog-filter-button.is-active::after {
  opacity: 1;
  transform: scaleX(1);
}

.blog-filter-button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.blog-card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.article-card,
.related-post-card {
  min-width: 0;
  color: var(--color-ink);
  background: var(--color-surface-pure);
  border: 1px solid color-mix(in srgb, var(--color-border) 58%, transparent);
  border-radius: var(--radius-md);
  box-shadow: 0 0.8rem 2.4rem color-mix(in srgb, var(--color-night) 8%, transparent);
}

.blog-list-card {
  display: flex;
  flex-direction: column;
  min-height: 21rem;
  padding: clamp(1.25rem, 2.5vw, 1.8rem);
  transition:
    border-color 180ms ease,
    box-shadow 180ms ease,
    transform 180ms ease;
}

.blog-list-card:hover {
  border-color: color-mix(in srgb, var(--color-accent) 64%, var(--color-border));
  box-shadow:
    0 1rem 2.8rem color-mix(in srgb, var(--color-night) 11%, transparent),
    0 0 1.4rem color-mix(in srgb, var(--color-cyan) 9%, transparent);
  transform: translateY(-3px);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
  color: var(--color-ink-muted);
  font-size: 0.8125rem;
  line-height: 1.4;
}

.article-meta time {
  font-family: var(--font-mono);
}

.reading-wrap > .article-meta + h1 {
  margin-top: 0.875rem;
  margin-bottom: 0.75rem;
}

.article-meta .tag,
.tag {
  display: inline-flex;
  align-items: center;
  min-height: 1.6rem;
  padding-inline: 0.55rem;
  color: var(--color-code-key);
  background: color-mix(in srgb, var(--color-accent) 10%, var(--color-surface-pure));
  border: 1px solid color-mix(in srgb, var(--color-accent) 32%, transparent);
  border-radius: var(--radius-xs);
  font-size: 0.75rem;
  font-weight: 700;
}

.blog-list-card h3,
.related-post-card h3 {
  margin-block: 1rem 0.8rem;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 1.08rem + 0.35vw, 1.4rem);
  line-height: 1.45;
}

.blog-list-card h3 a,
.related-post-card h3 a {
  color: inherit;
  text-decoration: none;
}

.blog-list-card h3 a:hover,
.blog-list-card h3 a:focus-visible,
.related-post-card h3 a:hover,
.related-post-card h3 a:focus-visible {
  color: var(--color-code-key);
}

.blog-list-card > p {
  margin: 0 0 1.25rem;
  color: var(--color-ink-muted);
  line-height: 1.78;
}

.article-more {
  display: inline-flex;
  gap: 0.45rem;
  align-items: center;
  align-self: flex-start;
  margin-top: auto;
  color: var(--color-code-key);
  font-weight: 750;
  text-decoration: none;
}

.article-more::after {
  content: "→";
  transition: transform 160ms ease;
}

.article-more:hover::after,
.article-more:focus-visible::after {
  transform: translateX(0.25rem);
}

.blog-empty,
.blog-noscript {
  grid-column: 1 / -1;
  margin: 0;
  padding: 1.5rem;
  color: var(--color-ink-muted);
  background: var(--color-surface-pure);
  border: 1px solid color-mix(in srgb, var(--color-border) 55%, transparent);
  border-radius: var(--radius-sm);
  text-align: center;
}

.article-breadcrumb-section,
.blog-breadcrumb-section {
  padding: 1.25rem var(--gutter) 0;
  color: var(--color-ink);
  background: var(--color-surface);
}

.blog-breadcrumb,
nav.breadcrumb,
nav.breadcrumbs,
main > .wrap:first-child > nav {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  max-width: var(--reading-width);
  margin: 0 auto 1.25rem;
  padding-top: 1.5rem;
  overflow: hidden;
  color: color-mix(in srgb, var(--color-ink-muted) 60%, transparent);
  font-size: 0.8125rem;
  line-height: 1.5;
  white-space: nowrap;
}

.blog-breadcrumb a,
nav.breadcrumb a,
nav.breadcrumbs a {
  flex: 0 0 auto;
  color: color-mix(in srgb, var(--color-ink-muted) 60%, transparent);
  text-decoration: none;
}

.blog-breadcrumb a:hover,
.blog-breadcrumb a:focus-visible,
nav.breadcrumb a:hover,
nav.breadcrumb a:focus-visible,
nav.breadcrumbs a:hover,
nav.breadcrumbs a:focus-visible {
  color: var(--color-code-key);
}

.blog-breadcrumb .separator,
.blog-breadcrumb [aria-hidden="true"],
nav.breadcrumb .separator,
nav.breadcrumb [aria-hidden="true"],
nav.breadcrumbs .separator,
nav.breadcrumbs [aria-hidden="true"] {
  flex: 0 0 auto;
  color: color-mix(in srgb, var(--color-ink-muted) 35%, transparent);
}

.blog-breadcrumb [aria-current="page"],
nav.breadcrumb [aria-current="page"],
nav.breadcrumbs [aria-current="page"] {
  flex: 0 1 auto;
  min-width: 0;
  max-width: min(30ch, 195px);
  overflow: hidden;
  color: var(--color-ink-muted);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.article-page,
.blog-article {
  color: var(--color-ink);
  background: var(--color-surface);
}

body:has(.reading-wrap.prose) {
  overflow-x: hidden;
}

.article-hero {
  padding: 0.75rem var(--gutter);
  color: var(--color-ink);
  background: var(--color-surface);
}

.article-hero > .wrap,
.wrap > .article-hero {
  width: min(100%, var(--reading-width));
  margin-inline: auto;
  padding-inline: 0;
}

.article-hero-inner {
  width: min(100%, var(--reading-width));
  margin-inline: auto;
}

.article-hero .article-meta {
  margin: 0;
  font-size: 0.8125rem;
}

.article-hero h1 {
  max-width: 100%;
  margin-block: 0.875rem 0.75rem;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 1.1rem + 1.4vw, 2rem);
  font-weight: 800;
  line-height: 1.32;
  letter-spacing: -0.025em;
}

.article-lead,
.article-hero .lead {
  max-width: 100%;
  margin: 0.9rem 0 0;
  color: var(--color-ink-muted);
  font-size: clamp(0.9375rem, 0.85rem + 0.45vw, 1.125rem);
  line-height: 1.7;
}

.article-body {
  padding: 0 var(--gutter) 3.5rem;
  color: var(--color-ink);
  background: var(--color-surface);
}

.reading-wrap {
  width: 100%;
  max-width: calc(var(--reading-width) + var(--gutter) + var(--gutter));
  margin-inline: auto;
  overflow-x: hidden;
}

.prose {
  min-width: 0;
  color: var(--color-ink);
  font-size: 1rem;
  line-height: 1.85;
  overflow-wrap: anywhere;
}

.prose > :first-child {
  margin-top: 0;
}

.prose > * {
  max-width: 100%;
}

.prose .field-note-row,
.prose .field-detail,
.prose .bc-config__card,
.prose .bc-compare__item {
  min-width: 0;
  overflow-wrap: anywhere;
}

.prose p,
.prose ul,
.prose ol,
.prose pre,
.prose table,
.prose blockquote {
  margin-block: 0 1.1rem;
}

.prose h2 {
  margin-block: 2.5rem 1rem;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 1.18rem + 0.55vw, 1.5rem);
  line-height: 1.35;
}

.prose h2:first-of-type {
  margin-top: 0;
}

.prose h3 {
  margin-block: 1.8rem 0.75rem;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(1.125rem, 1.06rem + 0.3vw, 1.25rem);
  line-height: 1.4;
}

.prose > section {
  margin: 0 0 2.5rem;
  padding: 0;
}

.prose > section + section {
  margin-top: 0;
}

.prose > section > h2:first-child {
  margin-top: 0;
}

.prose ul,
.prose ol {
  padding-left: 1.35rem;
}

.prose li + li {
  margin-top: 0.45rem;
}

.prose code {
  padding: 0.12em 0.35em;
  color: var(--color-code-key);
  background: color-mix(in srgb, var(--color-accent) 9%, var(--color-surface-pure));
  border: 1px solid color-mix(in srgb, var(--color-border) 44%, transparent);
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.prose pre {
  overflow-x: auto;
  padding: 1.15rem;
  color: var(--color-text);
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  line-height: 1.65;
}

.prose pre code {
  padding: 0;
  color: inherit;
  background: transparent;
  border: 0;
}

.prose a:not([class*="btn"]):not([class*="button"]) {
  color: var(--color-code-key);
  text-decoration-color: color-mix(in srgb, var(--color-code-key) 42%, transparent);
  text-underline-offset: 0.2em;
}

.prose a:not([class*="btn"]):not([class*="button"]):hover,
.prose a:not([class*="btn"]):not([class*="button"]):focus-visible {
  color: var(--color-ink);
  text-decoration-color: var(--color-lime);
}

.prose blockquote {
  padding: 1rem 1.1rem;
  color: var(--color-ink-muted);
  background: var(--color-surface-pure);
  border-left: 3px solid var(--color-cyan);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface-pure);
}

.prose th,
.prose td {
  padding: 0.75rem;
  border: 1px solid color-mix(in srgb, var(--color-border) 52%, transparent);
  text-align: left;
  vertical-align: top;
}

.prose th {
  color: var(--color-ink);
  background: color-mix(in srgb, var(--color-accent) 8%, var(--color-surface-pure));
}

.end-download-card,
.dl-card {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  justify-content: space-between;
  margin-block: 2.5rem 0;
  padding: clamp(1.25rem, 3vw, 1.8rem);
  color: var(--color-text);
  background: linear-gradient(135deg, var(--color-panel), var(--color-panel-raised));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow:
    0 1rem 2.5rem color-mix(in srgb, var(--color-night) 18%, transparent),
    inset 0 1px color-mix(in srgb, var(--color-cyan) 20%, transparent);
}

.end-download-card h2,
.dl-card h2 {
  margin: 0 0 0.5rem;
  color: var(--color-text);
  font-size: clamp(1.25rem, 1.13rem + 0.55vw, 1.5rem);
}

.end-download-card p,
.dl-card p {
  margin: 0;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.article-related-section {
  padding: 2.5rem var(--gutter) 4rem;
  color: var(--color-ink);
  background: var(--color-surface);
  border-top: 1px solid color-mix(in srgb, var(--color-border) 44%, transparent);
}

.article-related-inner {
  width: min(100%, var(--reading-width));
  margin-inline: auto;
}

.article-related-section h2 {
  margin-block: 0 1.25rem;
  color: var(--color-ink);
  font-size: clamp(1.35rem, 1.22rem + 0.55vw, 1.6rem);
}

#related-posts {
  display: grid;
  grid-template-columns: repeat(2, minmax(18.75rem, 1fr));
  gap: 1rem;
}

.related-post-card {
  padding: 1.2rem;
}

.related-post-card h3 {
  margin-top: 0.8rem;
  font-size: 1.05rem;
}

.related-post-card p {
  display: -webkit-box;
  margin: 0;
  overflow: hidden;
  color: var(--color-ink-muted);
  font-size: 0.9rem;
  line-height: 1.7;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

#post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2.5rem;
}

.post-nav-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-width: 0;
  padding: 1.1rem;
  color: var(--color-ink);
  background: var(--color-surface-pure);
  border: 1px solid color-mix(in srgb, var(--color-border) 58%, transparent);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition:
    color 160ms ease,
    border-color 160ms ease,
    transform 160ms ease;
}

.post-nav-card:hover,
.post-nav-card:focus-visible {
  color: var(--color-code-key);
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.post-nav-card.is-next {
  text-align: right;
}

.post-nav-label {
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.post-nav-card strong {
  overflow: hidden;
  font-size: 0.95rem;
  line-height: 1.55;
  text-overflow: ellipsis;
}

.post-nav-spacer {
  min-width: 0;
}

.has-blog-dialog {
  overflow: hidden;
}

.blog-download-dialog {
  position: fixed;
  z-index: 1000;
  inset: 0;
  display: grid;
  place-items: center;
  padding: var(--gutter);
  visibility: hidden;
  opacity: 0;
  transition:
    opacity 200ms ease,
    visibility 200ms ease;
}

.blog-download-dialog.is-open {
  visibility: visible;
  opacity: 1;
}

.blog-download-dialog-backdrop {
  position: absolute;
  inset: 0;
  background: color-mix(in srgb, var(--color-night) 78%, transparent);
  backdrop-filter: blur(0.35rem);
}

.blog-download-dialog-panel {
  position: relative;
  z-index: 1;
  width: min(100%, 31rem);
  padding: clamp(1.5rem, 5vw, 2.3rem);
  color: var(--color-ink);
  background: var(--color-surface-pure);
  border: 1px solid color-mix(in srgb, var(--color-accent) 48%, var(--color-border));
  border-radius: var(--radius-md);
  box-shadow:
    0 1.8rem 5rem color-mix(in srgb, var(--color-night) 45%, transparent),
    0 0 2.5rem color-mix(in srgb, var(--color-cyan) 15%, transparent);
  opacity: 0;
  transform: translateY(0.8rem) scale(0.98);
  transition:
    opacity 200ms ease,
    transform 200ms ease;
}

.blog-download-dialog.is-open .blog-download-dialog-panel {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.blog-download-dialog-close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  display: grid;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  place-items: center;
  color: var(--color-ink);
  background: var(--color-surface);
  border: 1px solid color-mix(in srgb, var(--color-border) 55%, transparent);
  border-radius: var(--radius-xs);
  font: inherit;
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
}

.blog-download-dialog-close:hover,
.blog-download-dialog-close:focus-visible {
  color: var(--color-code-key);
  border-color: var(--color-accent);
}

.blog-download-dialog-kicker {
  margin: 0 3rem 0.65rem 0;
  color: var(--color-code-key);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.blog-download-dialog-panel h2 {
  margin: 0 2.5rem 0.75rem 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 1.3rem + 0.7vw, 1.8rem);
  line-height: 1.25;
}

.blog-download-dialog-panel > p:not(.blog-download-dialog-kicker) {
  margin: 0;
  color: var(--color-ink-muted);
  line-height: 1.75;
}

.blog-download-dialog-actions {
  display: flex;
  margin-top: 1.4rem;
}

@media (max-width: 820px) {
  .blog-hero-layout {
    grid-template-columns: 1fr;
  }

  .blog-hero-index {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .blog-hero-index span {
    flex-direction: column;
    gap: 0.3rem;
    align-items: flex-start;
    justify-content: center;
    min-height: 4.5rem;
  }

  #related-posts {
    grid-template-columns: repeat(2, minmax(18.75rem, 1fr));
    overflow-x: auto;
    padding-bottom: 0.5rem;
  }
}

@media (max-width: 680px) {
  .blog-hero {
    padding-block: 4rem;
  }

  .blog-hero h1 {
    font-size: clamp(1.5rem, 7vw, 1.875rem);
  }

  .blog-hero-index,
  .blog-card-grid {
    grid-template-columns: 1fr;
  }

  .blog-hero-index span {
    flex-direction: row;
    align-items: center;
    min-height: 3rem;
  }

  .blog-list-heading {
    align-items: flex-start;
  }

  .blog-list-card {
    min-height: auto;
  }

  .end-download-card,
  .dl-card {
    align-items: flex-start;
    flex-direction: column;
  }

  #related-posts,
  #post-nav {
    grid-template-columns: 1fr;
    overflow: visible;
  }

  .post-nav-spacer {
    display: none;
  }

  .post-nav-card.is-next {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  .blog-filter-button,
  .blog-filter-button::after,
  .blog-list-card,
  .article-more::after,
  .post-nav-card,
  .blog-download-dialog,
  .blog-download-dialog-panel {
    transition: none;
  }
}

/* ═══ blog-components v1(2026-08-18 面板统一追加,勿手改;色调全部 color-mix 吃站点令牌,
   明暗主题自适应)——文章富文本组件词汇表,写作端只填内容不写样式 ═══ */
.bc-summary, .bc-stats, .bc-steps, .bc-compare, .bc-faq, .bc-errors,
.bc-config, .bc-scheme, .bc-insight, .bc-flow { margin: 1.25rem 0; }

/* Narrative cards split long explanations into scannable blocks. */
.bc-copy {
  margin: 0.875rem 0;
  padding: 0.75rem 1rem;
  border-left: 3px solid color-mix(in srgb, var(--color-primary, #4f7cff) 55%, transparent);
  border-radius: 0 10px 10px 0;
  background: color-mix(in srgb, var(--color-primary, #4f7cff) 5%, transparent);
}

/* 色调系统:a=品牌主色 b=品牌强调色 c=青 d=琥珀 e=玫红(低饱和淡染,任何主题都压得住) */
[data-tone="a"], .bc-tone-a { --bc-tone: var(--color-primary, #4f7cff); }
[data-tone="b"], .bc-tone-b { --bc-tone: var(--color-accent, var(--color-primary, #7c5cff)); }
[data-tone="c"], .bc-tone-c { --bc-tone: #0e9f8a; }
[data-tone="d"], .bc-tone-d { --bc-tone: #d97706; }
[data-tone="e"], .bc-tone-e { --bc-tone: #e11d48; }

/* 本文速览卡 */
.bc-summary {
  border: 1px solid color-mix(in srgb, var(--color-primary, #4f7cff) 28%, transparent);
  background: color-mix(in srgb, var(--color-primary, #4f7cff) 7%, transparent);
  border-radius: 12px;
  padding: 0.875rem 1.125rem;
  font-size: 0.9375rem;
  line-height: 1.7;
}
.bc-summary strong { display: block; font-size: 0.8125rem; letter-spacing: 0.02em; opacity: 0.75; margin-bottom: 0.25rem; }
.bc-summary p { margin: 0; font-size: inherit !important; }

/* 数据瓦片行 */
.bc-stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.75rem; }
.bc-stats[data-cols="2"] { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.bc-stats[data-cols="4"] { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.bc-stat {
  --bc-tone: var(--color-primary, #4f7cff);
  text-align: center;
  padding: 0.75rem 0.5rem;
  border-radius: 12px;
  border: 1px solid color-mix(in srgb, var(--bc-tone) 26%, transparent);
  background: color-mix(in srgb, var(--bc-tone) 7%, transparent);
}
.bc-stat__num { font-size: 1.375rem; font-weight: 800; line-height: 1.2; color: color-mix(in srgb, var(--bc-tone) 62%, var(--color-text, currentColor)); }
.bc-stat__label { font-size: 0.75rem; opacity: 0.72; margin-top: 0.125rem; line-height: 1.45; }

/* 编号步骤卡 */
.bc-steps { list-style: none; counter-reset: bcstep; padding: 0; display: grid; gap: 0.75rem; }
.bc-step {
  counter-increment: bcstep;
  position: relative;
  padding: 0.875rem 1rem 0.875rem 3.25rem;
  border: 1px solid color-mix(in srgb, var(--color-text, #888) 14%, transparent);
  border-radius: 12px;
  background: color-mix(in srgb, var(--color-text, #888) 3%, transparent);
}
.bc-step::before {
  content: counter(bcstep);
  position: absolute; left: 0.875rem; top: 0.875rem;
  width: 1.75rem; height: 1.75rem; border-radius: 50%;
  display: grid; place-items: center;
  font-size: 0.875rem; font-weight: 700;
  background: var(--color-primary, #4f7cff);
  color: var(--color-bg, var(--color-canvas, #fff));
}
.bc-step h4 { margin: 0 0 0.25rem; font-size: 0.9375rem !important; line-height: 1.5; }
.bc-step p { margin: 0; font-size: 0.875rem; line-height: 1.65; opacity: 0.88; }

/* 对比卡组 */
.bc-compare { display: grid; gap: 0.75rem; }
.bc-compare__item {
  border: 1px solid color-mix(in srgb, var(--color-text, #888) 14%, transparent);
  border-radius: 12px;
  padding: 0.875rem 1rem;
  background: color-mix(in srgb, var(--color-text, #888) 3%, transparent);
}
.bc-compare__item.is-best {
  border: 2px solid color-mix(in srgb, var(--color-primary, #4f7cff) 55%, transparent);
  background: color-mix(in srgb, var(--color-primary, #4f7cff) 6%, transparent);
}
.bc-compare__item > header { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.375rem; }
.bc-compare__item h4 { margin: 0; font-size: 0.9375rem !important; line-height: 1.5; }
.bc-compare__tag {
  font-size: 0.6875rem; font-weight: 700; line-height: 1;
  padding: 0.25rem 0.5rem; border-radius: 999px;
  background: var(--color-primary, #4f7cff);
  color: var(--color-bg, var(--color-canvas, #fff));
}
.bc-compare__item p { margin: 0 0 0.375rem; font-size: 0.875rem; line-height: 1.65; opacity: 0.88; }
.bc-compare__scene {
  font-size: 0.8125rem !important; opacity: 1 !important;
  padding: 0.375rem 0.625rem; border-radius: 8px; margin: 0 !important;
  background: color-mix(in srgb, var(--color-primary, #4f7cff) 9%, transparent);
}

/* 问答彩卡 */
.bc-faq { display: grid; gap: 0.75rem; }
.bc-faq__item {
  --bc-tone: var(--color-primary, #4f7cff);
  border: 1px solid color-mix(in srgb, var(--bc-tone) 26%, transparent);
  background: color-mix(in srgb, var(--bc-tone) 6%, transparent);
  border-radius: 12px;
  padding: 0.875rem 1rem;
}
.bc-faq__item h4 { margin: 0 0 0.3125rem; font-size: 0.9375rem !important; line-height: 1.5; }
.bc-faq__item h4::before { content: "Q "; font-weight: 800; color: color-mix(in srgb, var(--bc-tone) 62%, var(--color-text, currentColor)); }
.bc-faq__item p { margin: 0; font-size: 0.875rem; line-height: 1.65; opacity: 0.88; }

/* 报错排查卡 */
.bc-errors { display: grid; gap: 0.75rem; }
.bc-error {
  border: 1px solid color-mix(in srgb, #e11d48 22%, transparent);
  border-left: 4px solid color-mix(in srgb, #e11d48 62%, transparent);
  border-radius: 10px;
  padding: 0.875rem 1rem;
  background: color-mix(in srgb, #e11d48 5%, transparent);
}
.bc-error h4 {
  margin: 0 0 0.3125rem; font-size: 0.875rem !important; line-height: 1.5;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.bc-error p { margin: 0; font-size: 0.875rem; line-height: 1.65; opacity: 0.88; }

/* 键值配置卡 */
.bc-config { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.75rem; }
.bc-config__card {
  --bc-tone: var(--color-primary, #4f7cff);
  border: 1px solid color-mix(in srgb, var(--bc-tone) 26%, transparent);
  background: color-mix(in srgb, var(--bc-tone) 6%, transparent);
  border-radius: 12px;
  padding: 0.875rem 1rem;
}
.bc-config__card h4 { margin: 0 0 0.5rem; font-size: 0.9375rem !important; line-height: 1.5; color: color-mix(in srgb, var(--bc-tone) 58%, var(--color-text, currentColor)); }
.bc-config__card dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 0.25rem 0.75rem; font-size: 0.8125rem; line-height: 1.6; }
.bc-config__card dt { font-weight: 600; opacity: 0.7; }
.bc-config__card dd { margin: 0; }
.bc-config__note {
  margin: 0.625rem 0 0 !important; padding: 0.375rem 0.625rem; border-radius: 8px;
  font-size: 0.75rem !important; line-height: 1.55;
  background: color-mix(in srgb, var(--bc-tone) 11%, transparent);
}

/* 双栏方案面板 */
.bc-scheme {
  border: 1px solid color-mix(in srgb, var(--color-primary, #4f7cff) 24%, transparent);
  background: color-mix(in srgb, var(--color-primary, #4f7cff) 4%, transparent);
  border-radius: 14px;
  padding: 1rem 1.125rem;
}
.bc-scheme__title { margin: 0 0 0.75rem; font-size: 1rem !important; line-height: 1.5; }
.bc-scheme__cols { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.bc-scheme__col h5 { margin: 0 0 0.375rem; font-size: 0.875rem; line-height: 1.5; opacity: 0.92; }
.bc-scheme__col ul { margin: 0; padding-left: 1.125rem; font-size: 0.875rem; line-height: 1.7; }
.bc-scheme__note {
  margin: 0.875rem 0 0 !important; padding: 0.5rem 0.75rem; border-radius: 8px;
  font-size: 0.8125rem !important; line-height: 1.6;
  background: color-mix(in srgb, var(--color-primary, #4f7cff) 10%, transparent);
}

/* 洞察结论卡 */
.bc-insight {
  border: 1px solid color-mix(in srgb, #0e9f8a 30%, transparent);
  background: linear-gradient(135deg,
    color-mix(in srgb, #0e9f8a 8%, transparent),
    color-mix(in srgb, var(--color-primary, #4f7cff) 7%, transparent));
  border-radius: 12px;
  padding: 0.875rem 1.125rem;
}
.bc-insight h4 { margin: 0 0 0.25rem; font-size: 0.9375rem !important; line-height: 1.5; }
.bc-insight h4::before { content: "💡 "; }
.bc-insight p { margin: 0; font-size: 0.875rem; line-height: 1.68; opacity: 0.9; }

/* 流程链 */
.bc-flow { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; }
.bc-flow span {
  font-size: 0.8125rem; line-height: 1.5;
  padding: 0.375rem 0.75rem; border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--color-primary, #4f7cff) 30%, transparent);
  background: color-mix(in srgb, var(--color-primary, #4f7cff) 7%, transparent);
}
.bc-flow span:not(:last-child)::after {
  content: "→";
  margin-left: 0.5rem; margin-right: -0.25rem;
  opacity: 0.45;
}

@media (max-width: 720px) {
  .bc-stats, .bc-stats[data-cols="4"] { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bc-config, .bc-scheme__cols { grid-template-columns: 1fr; }

  .prose table {
    table-layout: fixed;
    overflow-wrap: anywhere;
  }

  .prose th,
  .prose td {
    padding: 0.5rem;
  }
}