:root {
  --blog-fs-crumb: 0.8125rem;
  --blog-fs-small: 0.875rem;
  --blog-fs-body: 1rem;
  --blog-fs-lead: clamp(0.9375rem, 0.85rem + 0.45vw, 1.125rem);
  --blog-fs-card-title: 1.25rem;
  --blog-fs-h2: 1.5rem;
  --blog-fs-h3: 1.25rem;
  --blog-fs-article-h1: clamp(1.5rem, 1.1rem + 1.4vw, 2rem);
  --blog-fs-index-h1: clamp(2rem, 3.6vw, 3rem);
  --blog-fs-index-h1-mobile: 1.875rem;
  --blog-fs-article-h1-mobile: 1.5rem;
  --blog-fs-close: 1.5rem;
  --blog-leading-title: 1.32;
  --blog-leading-card: 1.55;
  --blog-leading-lead: 1.7;
  --blog-leading-body: 1.85;
  --blog-leading-meta: 1.6;
  --blog-leading-tight: 1;
  --blog-space-1: 0.25rem;
  --blog-space-2: 0.5rem;
  --blog-space-3: 0.75rem;
  --blog-space-4: 1rem;
  --blog-space-5: 1.25rem;
  --blog-space-6: 1.5rem;
  --blog-space-7: 2rem;
  --blog-space-8: 2.25rem;
  --blog-space-9: 2.5rem;
  --blog-space-10: 3rem;
  --blog-space-11: 4rem;
  --blog-space-12: 4.5rem;
  --blog-space-13: 5rem;
  --blog-card-min: 300px;
  --blog-dialog-width: 30rem;
  --blog-dialog-height: 88dvh;
  --blog-control-size: 44px;
  --blog-crumb-width: 30ch;
  --blog-table-cell-min: 7em;
  --blog-line-width: 1px;
  --blog-focus-width: 2px;
  --blog-focus-offset: 4px;
  --blog-dialog-shift: 8px;
  --blog-modal-duration: 180ms;
  --blog-no-motion: 0.01ms;
  --blog-layer-modal: 1000;
  --blog-layer-skip: 1100;
  --blog-opacity-link: 0.65;
  --blog-opacity-separator: 0.35;
}

.blog-index-page,
.post-intro,
.article-body {
  color: var(--c-text);
  background: var(--c-bg);
  font-family: var(--f-body);
}

.blog-skip {
  position: fixed;
  z-index: var(--blog-layer-skip);
  inset-block-start: var(--blog-space-3);
  inset-inline-start: var(--gutter);
  padding: var(--blog-space-3) var(--blog-space-4);
  border: var(--blog-line-width) solid var(--c-ink);
  border-radius: var(--r-sm);
  color: var(--c-on-ink);
  background: var(--c-ink);
  font-family: var(--f-body);
  transform: translateY(-200%);
}

.blog-skip:focus {
  transform: translateY(0);
}

.blog-index-hero {
  padding-block: var(--blog-space-12) var(--blog-space-11);
  color: var(--c-text);
  background: var(--c-bg);
}

.blog-eyebrow {
  margin: 0 0 var(--blog-space-5);
  color: var(--c-muted);
  font-family: var(--f-mono);
  font-size: var(--blog-fs-small);
  line-height: var(--blog-leading-meta);
}

.blog-index-hero h1 {
  display: block;
  max-width: 100%;
  margin: 0;
  color: var(--c-text);
  font-family: var(--f-display);
  font-size: var(--blog-fs-index-h1);
  font-weight: var(--weight-regular);
  line-height: var(--blog-leading-title);
  letter-spacing: var(--tracking-heading);
  overflow-wrap: break-word;
}

.blog-index-lead {
  max-width: var(--reading-width);
  margin: var(--blog-space-6) 0 0;
  color: var(--c-muted);
  font-size: var(--blog-fs-lead);
  line-height: var(--blog-leading-lead);
}

.blog-hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: var(--blog-space-2);
  margin-block-start: var(--blog-space-7);
}

.blog-hero-facts .chip {
  color: var(--c-muted);
  background: var(--c-bg);
  font-family: var(--f-mono);
}

.blog-catalog {
  padding-block: var(--blog-space-9) var(--blog-space-13);
  color: var(--c-text);
  background: linear-gradient(var(--c-panel-2), var(--c-bg) var(--blog-space-13));
}

.blog-catalog-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--blog-space-3) var(--blog-space-6);
  margin-block-end: var(--blog-space-6);
}

.blog-catalog-head h2,
.blog-scope h2 {
  display: block;
  margin: 0;
  color: var(--c-text);
  font-family: var(--f-display);
  font-size: var(--blog-fs-h2);
  font-weight: var(--weight-regular);
  line-height: var(--blog-leading-title);
  letter-spacing: var(--tracking-heading);
}

.blog-count {
  margin: 0;
  color: var(--c-muted);
  font-family: var(--f-mono);
  font-size: var(--blog-fs-small);
  line-height: var(--blog-leading-meta);
}

.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--blog-space-2);
  margin-block-end: var(--blog-space-7);
}

.blog-filter {
  min-height: var(--blog-control-size);
  padding: var(--blog-space-2) var(--blog-space-5);
  border: var(--blog-line-width) solid var(--c-line);
  border-radius: var(--r-pill);
  color: var(--c-muted);
  background: var(--c-bg);
  font-family: var(--f-body);
  font-size: var(--blog-fs-small);
  font-weight: var(--weight-regular);
  line-height: var(--blog-leading-meta);
  cursor: pointer;
  transition:
    color var(--duration) var(--ease),
    border-color var(--duration) var(--ease),
    background-color var(--duration) var(--ease);
}

.blog-filter:hover {
  color: var(--c-ink);
  border-color: var(--c-ink);
}

.blog-filter[aria-pressed="true"] {
  color: var(--c-on-ink);
  background: var(--c-ink);
  border-color: var(--c-ink);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, var(--blog-card-min)), 1fr));
  gap: var(--gap);
  margin: 0;
  padding: 0;
  list-style: none;
}

.blog-grid-item,
.blog-related-item {
  min-width: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.blog-post-card,
.blog-related-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  height: 100%;
  box-sizing: border-box;
  padding: var(--space-card);
  border: var(--blog-line-width) solid var(--c-line);
  border-radius: var(--r-card);
  color: var(--c-text);
  background: var(--c-bg);
  box-shadow: var(--sh-mid);
}

.blog-card-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--blog-space-2) var(--blog-space-3);
  color: var(--c-muted);
  font-size: var(--blog-fs-crumb);
  line-height: var(--blog-leading-meta);
}

.blog-card-date {
  color: var(--c-muted);
  font-family: var(--f-mono);
  font-size: var(--blog-fs-crumb);
  line-height: var(--blog-leading-meta);
}

.blog-tag {
  display: inline-block;
  padding: var(--blog-space-1) var(--blog-space-2);
  border: var(--blog-line-width) solid var(--c-line);
  border-radius: var(--r-xs);
  color: var(--c-ink);
  background: var(--c-bg);
  font-family: var(--f-body);
  font-size: var(--blog-fs-crumb);
  line-height: var(--blog-leading-meta);
}

.blog-post-card .blog-card-title,
.blog-related-card .blog-card-title {
  display: block;
  max-width: 100%;
  margin: var(--blog-space-5) 0 var(--blog-space-3);
  color: var(--c-text);
  font-family: var(--f-display);
  font-size: var(--blog-fs-card-title);
  font-weight: var(--weight-regular);
  line-height: var(--blog-leading-card);
  letter-spacing: var(--tracking-heading);
  overflow-wrap: break-word;
}

.blog-card-title a {
  color: var(--c-text);
  text-decoration: none;
  transition: color var(--duration) var(--ease);
}

.blog-card-title a:hover {
  color: var(--c-ink);
  text-decoration: underline;
  text-underline-offset: var(--blog-space-1);
}

.blog-post-card .blog-card-summary,
.blog-related-card .blog-card-summary {
  margin: 0 0 var(--blog-space-6);
  color: var(--c-muted);
  font-size: var(--blog-fs-small);
  line-height: var(--blog-leading-body);
  overflow-wrap: anywhere;
}

.blog-read-link {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  gap: var(--blog-space-3);
  min-height: var(--blog-control-size);
  margin-block-start: auto;
  color: var(--c-ink);
  font-family: var(--f-body);
  font-size: var(--blog-fs-small);
  line-height: var(--blog-leading-meta);
  text-decoration: none;
}

.blog-read-link:hover {
  color: var(--c-ink-deep);
  text-decoration: underline;
  text-underline-offset: var(--blog-space-1);
}

.blog-empty {
  grid-column: 1 / -1;
  margin: 0;
  padding: var(--blog-space-7);
  border: var(--blog-line-width) dashed var(--c-line);
  border-radius: var(--r-card);
  color: var(--c-muted);
  background: var(--c-bg);
  font-size: var(--blog-fs-body);
  line-height: var(--blog-leading-body);
  list-style: none;
}

.blog-empty a,
.blog-text-link {
  color: var(--c-ink);
  text-underline-offset: var(--blog-space-1);
}

.blog-scope {
  padding-block: var(--blog-space-10);
  color: var(--c-text);
  background: var(--c-panel);
}

.blog-scope p {
  max-width: var(--reading-width);
  margin-block: var(--blog-space-5);
  color: var(--c-muted);
  font-size: var(--blog-fs-body);
  line-height: var(--blog-leading-body);
}

.blog-text-link {
  display: inline-block;
  padding-block: var(--blog-space-2);
  font-size: var(--blog-fs-small);
  line-height: var(--blog-leading-meta);
  text-decoration: none;
}

.blog-text-link:hover {
  color: var(--c-ink-deep);
  text-decoration: underline;
}

/* 标准文章骨架的限宽与容器间距由构建系统追加，本文件提供皮肤与子元素排版。 */
.blog-breadcrumb,
nav.breadcrumb,
nav.breadcrumbs {
  display: flex;
  align-items: center;
  gap: var(--blog-space-2);
  min-width: 0;
  overflow: hidden;
  white-space: nowrap;
  color: var(--c-muted);
  font-family: var(--f-body);
  font-size: var(--blog-fs-crumb);
  line-height: var(--blog-leading-meta);
}

.blog-breadcrumb,
nav.breadcrumb {
  margin-block: var(--blog-space-6) var(--blog-space-5);
}

.blog-breadcrumb a,
nav.breadcrumb a,
nav.breadcrumbs a {
  flex: 0 0 auto;
  color: var(--c-muted);
  opacity: var(--blog-opacity-link);
  text-decoration: none;
}

.blog-breadcrumb a:hover,
nav.breadcrumb a:hover,
nav.breadcrumbs a:hover {
  color: var(--c-ink);
  opacity: 1;
  text-decoration: none;
}

.blog-breadcrumb [aria-hidden="true"],
nav.breadcrumb [aria-hidden="true"],
nav.breadcrumbs [aria-hidden="true"] {
  flex: 0 0 auto;
  color: var(--c-muted);
  opacity: var(--blog-opacity-separator);
}

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

/* 防止通用 section 的首页节奏侵入文章首屏。 */
body:has(.post-intro) main > .section:first-child {
  padding-block: var(--blog-space-6) 0;
}

body:has(.post-intro) main > .section:has(> nav.breadcrumbs),
body:has(.post-intro) main > .section:has(> nav.breadcrumb),
body:has(.post-intro) main > .section:has(> .blog-breadcrumb) {
  padding-block: var(--blog-space-6) 0;
}

body:has(.post-intro) main > .section:has(.post-intro) {
  padding-block: var(--blog-space-3) var(--blog-space-7);
}

.post-intro {
  color: var(--c-text);
  background: var(--c-bg);
}

.head-col {
  color: var(--c-text);
  font-family: var(--f-body);
}

.byline-row {
  color: var(--c-muted);
  font-family: var(--f-mono);
  font-size: var(--blog-fs-crumb);
  font-weight: var(--weight-regular);
  line-height: var(--blog-leading-meta);
}

.byline-row time {
  font-variant-numeric: tabular-nums;
}

.post-intro h1 {
  display: block;
  max-width: 100%;
  margin-block: var(--blog-space-4);
  color: var(--c-text);
  font-family: var(--f-display);
  font-size: var(--blog-fs-article-h1);
  font-weight: var(--weight-regular);
  line-height: var(--blog-leading-title);
  letter-spacing: var(--tracking-heading);
  overflow-wrap: break-word;
}

.entry-lead {
  color: var(--c-muted);
  font-family: var(--f-body);
  font-size: var(--blog-fs-lead);
  font-weight: var(--weight-regular);
  line-height: var(--blog-leading-lead);
}

.article-body {
  font-size: var(--blog-fs-body);
  line-height: var(--blog-leading-body);
  overflow-wrap: break-word;
}

.article-body > section,
.article-body section.section {
  display: block;
  margin-block: 0 var(--blog-space-7);
  padding-block: 0;
}

.article-body section > section {
  margin-block: var(--blog-space-6);
  padding-block: 0;
}

.article-body h2,
.article-body h3 {
  display: block;
  max-width: 100%;
  color: var(--c-text);
  font-family: var(--f-display);
  font-weight: var(--weight-regular);
  line-height: var(--blog-leading-card);
  letter-spacing: var(--tracking-heading);
  scroll-margin-top: calc(var(--header-height) + var(--blog-space-6));
}

.article-body h2 {
  margin-block: var(--blog-space-7) var(--blog-space-4);
  font-size: var(--blog-fs-h2);
}

.article-body h2:first-of-type {
  margin-block-start: 0;
}

.article-body h3 {
  margin-block: var(--blog-space-6) var(--blog-space-3);
  font-size: var(--blog-fs-h3);
}

.article-body p,
.article-body ul,
.article-body ol,
.article-body dl {
  margin-block: 0 var(--blog-space-5);
}

.article-body ul,
.article-body ol {
  padding-inline-start: var(--blog-space-6);
}

.article-body li + li {
  margin-block-start: var(--blog-space-2);
}

.article-body li > p:last-child,
.article-body blockquote > :last-child {
  margin-block-end: 0;
}

.article-body a:not([class*="btn"]):not([class*="button"]):not(.app-store),
.prose a:not([class*="btn"]):not([class*="button"]):not(.app-store) {
  color: var(--c-ink);
  text-underline-offset: var(--blog-space-1);
}

.article-body a:not([class*="btn"]):not([class*="button"]):not(.app-store):hover,
.prose a:not([class*="btn"]):not([class*="button"]):not(.app-store):hover {
  color: var(--c-ink-deep);
}

.article-body code,
.article-body kbd,
.article-body pre {
  font-family: var(--f-mono);
  font-size: var(--blog-fs-small);
}

.article-body :not(pre) > code {
  padding: var(--blog-space-1) var(--blog-space-2);
  border-radius: var(--r-xs);
  color: var(--c-ink);
  background: var(--c-panel);
  overflow-wrap: anywhere;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.article-body pre {
  max-width: 100%;
  box-sizing: border-box;
  margin-block: var(--blog-space-5);
  padding: var(--blog-space-5);
  overflow-x: auto;
  border: var(--blog-line-width) solid var(--c-line);
  border-radius: var(--r-sm);
  color: var(--c-text);
  background: var(--c-panel);
  line-height: var(--blog-leading-body);
  white-space: pre;
  overflow-wrap: normal;
  word-break: normal;
}

.article-body pre code {
  padding: 0;
  border: 0;
  color: inherit;
  background: inherit;
  white-space: inherit;
  overflow-wrap: normal;
  word-break: normal;
}

.article-body blockquote {
  margin: var(--blog-space-5) 0;
  padding: var(--blog-space-4) var(--blog-space-5);
  border-inline-start: var(--blog-focus-width) solid var(--c-ink);
  color: var(--c-text);
  background: var(--c-panel);
}

.article-body .table-scroll {
  max-width: 100%;
  margin-block: var(--blog-space-5);
  overflow-x: auto;
}

.article-body table,
.prose table {
  display: block;
  width: 100%;
  max-width: 100%;
  margin-block: var(--blog-space-5);
  overflow-x: auto;
  border-collapse: collapse;
  color: var(--c-text);
  background: var(--c-bg);
  font-size: var(--blog-fs-small);
  line-height: var(--blog-leading-lead);
}

.article-body .table-scroll table,
.prose .table-scroll table {
  margin-block: 0;
}

.article-body caption,
.prose caption {
  padding-block-end: var(--blog-space-3);
  color: var(--c-muted);
  font-size: var(--blog-fs-small);
  text-align: start;
}

.article-body th,
.article-body td,
.prose th,
.prose td {
  min-width: var(--blog-table-cell-min);
  padding: var(--blog-space-3) var(--blog-space-4);
  border: var(--blog-line-width) solid var(--c-line);
  vertical-align: top;
  text-align: start;
  word-break: normal;
  overflow-wrap: normal;
}

.article-body th,
.prose th {
  color: var(--c-text);
  background: var(--c-panel);
  font-weight: var(--weight-medium);
}

.article-body img {
  max-width: 100%;
  height: auto;
}

.dl-card {
  box-sizing: border-box;
  margin-block: var(--blog-space-7);
  padding: var(--space-card);
  border: var(--blog-line-width) solid var(--c-line);
  border-radius: var(--r-card);
  color: var(--c-text);
  background: var(--c-panel);
  box-shadow: var(--sh-near);
}

.dl-card h2,
.dl-card h3 {
  display: block;
  margin-block: 0 var(--blog-space-3);
  color: var(--c-text);
  font-family: var(--f-display);
  font-size: var(--blog-fs-h2);
  font-weight: var(--weight-regular);
  line-height: var(--blog-leading-card);
  letter-spacing: var(--tracking-heading);
}

.dl-card p {
  margin-block: 0 var(--blog-space-5);
  color: var(--c-muted);
  font-size: var(--blog-fs-body);
  line-height: var(--blog-leading-lead);
}

/* 按钮及常驻浮层使用 components.css 的完整皮肤，不在此处覆写。 */
#related-posts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, var(--blog-card-min)), 1fr));
  gap: var(--blog-space-6);
  width: 100%;
  max-width: var(--reading-width);
  box-sizing: border-box;
  margin-block: var(--blog-space-5) var(--blog-space-7);
  padding: 0;
  list-style: none;
}

.blog-related-card {
  padding: var(--blog-space-6);
}

#post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--blog-space-5);
  margin-block: var(--blog-space-7);
  padding: 0;
  list-style: none;
}

.post-step {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--blog-space-3);
  min-width: 0;
  height: 100%;
  box-sizing: border-box;
  padding: var(--blog-space-6);
  border: var(--blog-line-width) solid var(--c-line);
  border-radius: var(--r-card);
  color: var(--c-text);
  background: var(--c-bg);
  text-decoration: none;
  transition:
    border-color var(--duration) var(--ease),
    box-shadow var(--duration) var(--ease);
}

.post-step--previous {
  grid-column: 1;
}

.post-step--next {
  grid-column: 2;
}

.post-step:hover {
  border-color: var(--c-ink);
  color: var(--c-ink);
  box-shadow: var(--sh-near);
}

.post-step-label {
  color: var(--c-ink);
  font-family: var(--f-body);
  font-size: var(--blog-fs-small);
  line-height: var(--blog-leading-meta);
}

.post-step-title {
  color: var(--c-text);
  font-family: var(--f-display);
  font-size: var(--blog-fs-body);
  font-weight: var(--weight-regular);
  line-height: var(--blog-leading-lead);
  overflow-wrap: break-word;
}

.post-step-tag {
  margin-block-start: auto;
  color: var(--c-muted);
  font-family: var(--f-body);
  font-size: var(--blog-fs-crumb);
  line-height: var(--blog-leading-meta);
}

.blog-modal-open {
  overflow: hidden;
}

.blog-download-overlay {
  position: fixed;
  z-index: var(--blog-layer-modal);
  inset: 0;
  display: grid;
  place-items: center;
  box-sizing: border-box;
  padding: var(--gutter);
  overflow-y: auto;
  overscroll-behavior: contain;
  color: var(--c-text);
  background: var(--c-veil);
  opacity: 0;
  transition: opacity var(--blog-modal-duration) var(--ease);
}

.blog-download-dialog {
  position: relative;
  width: min(100%, var(--blog-dialog-width));
  max-height: var(--blog-dialog-height);
  box-sizing: border-box;
  padding: var(--blog-space-9);
  overflow-y: auto;
  border: var(--blog-line-width) solid var(--c-line);
  border-radius: var(--r-card);
  color: var(--c-text);
  background: var(--c-bg);
  box-shadow: var(--sh-float);
  font-family: var(--f-body);
  transform: translateY(var(--blog-dialog-shift));
  transition: transform var(--blog-modal-duration) var(--ease);
}

.blog-download-overlay.is-open {
  opacity: 1;
}

.blog-download-overlay.is-open .blog-download-dialog {
  transform: translateY(0);
}

.blog-download-close {
  position: absolute;
  inset-block-start: var(--blog-space-3);
  inset-inline-end: var(--blog-space-3);
  display: grid;
  place-items: center;
  width: var(--blog-control-size);
  height: var(--blog-control-size);
  padding: 0;
  border: var(--blog-line-width) solid var(--c-line);
  border-radius: var(--r-round);
  color: var(--c-text);
  background: var(--c-bg);
  font-family: var(--f-body);
  font-size: var(--blog-fs-close);
  font-weight: var(--weight-regular);
  line-height: var(--blog-leading-tight);
  cursor: pointer;
}

.blog-download-close:hover {
  border-color: var(--c-ink);
  color: var(--c-ink);
}

.blog-download-eyebrow {
  margin: 0 var(--blog-space-7) var(--blog-space-6) 0;
  color: var(--c-muted);
  font-family: var(--f-body);
  font-size: var(--blog-fs-crumb);
  line-height: var(--blog-leading-meta);
}

.blog-download-title {
  display: block;
  margin: 0 0 var(--blog-space-4);
  color: var(--c-text);
  font-family: var(--f-display);
  font-size: var(--blog-fs-h2);
  font-weight: var(--weight-regular);
  line-height: var(--blog-leading-title);
  letter-spacing: var(--tracking-heading);
}

.blog-download-description {
  margin: 0 0 var(--blog-space-4);
  color: var(--c-text);
  font-size: var(--blog-fs-body);
  line-height: var(--blog-leading-lead);
  overflow-wrap: break-word;
}

.blog-download-note {
  margin: 0 0 var(--blog-space-6);
  color: var(--c-muted);
  font-size: var(--blog-fs-small);
  line-height: var(--blog-leading-lead);
}

.blog-filter:focus-visible,
.blog-skip:focus-visible,
.blog-read-link:focus-visible,
.blog-card-title a:focus-visible,
.blog-text-link:focus-visible,
.blog-empty a:focus-visible,
.blog-breadcrumb a:focus-visible,
nav.breadcrumb a:focus-visible,
nav.breadcrumbs a:focus-visible,
.post-step:focus-visible,
.blog-download-close:focus-visible,
.blog-download-dialog a:focus-visible {
  outline: var(--blog-focus-width) solid var(--c-ink);
  outline-offset: var(--blog-focus-offset);
}

#related-posts[hidden],
#post-nav[hidden],
.blog-download-overlay[hidden] {
  display: none;
}

@media (max-width: 640px) {
  .blog-index-hero {
    padding-block: var(--blog-space-9) var(--blog-space-7);
  }

  .blog-index-hero h1 {
    font-size: var(--blog-fs-index-h1-mobile);
  }

  .post-intro h1 {
    font-size: var(--blog-fs-article-h1-mobile);
  }

  .blog-catalog {
    padding-block: var(--blog-space-7) var(--blog-space-10);
  }

  .blog-catalog-head {
    align-items: flex-start;
    flex-direction: column;
    gap: var(--blog-space-3);
  }

  .blog-filters {
    gap: var(--blog-space-2);
  }

  .blog-filter {
    padding-inline: var(--blog-space-4);
  }

  .blog-post-card,
  .blog-related-card,
  .dl-card {
    padding: var(--blog-space-6);
  }

  #post-nav {
    grid-template-columns: minmax(0, 1fr);
  }

  .post-step--previous,
  .post-step--next {
    grid-column: 1;
  }

  .blog-download-dialog {
    padding: var(--blog-space-7) var(--blog-space-6);
  }

  .blog-download-eyebrow {
    margin-inline-end: var(--blog-space-9);
  }

  .article-body .tilt,
  .article-body [data-tilt] {
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .blog-filter,
  .blog-card-title a,
  .post-step,
  .blog-download-overlay,
  .blog-download-dialog {
    transition-duration: var(--blog-no-motion);
  }

  .blog-download-dialog {
    transform: 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 ═══ */
.blk-summary, .blk-stats, .blk-steps, .blk-compare, .blk-faq, .blk-errors,
.blk-config, .blk-scheme, .blk-insight, .blk-flow { margin: 1.25rem 0; }

/* 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"], .blk-tone-a { --blk-tone: var(--color-primary, #4f7cff); }
[data-tone="b"], .blk-tone-b { --blk-tone: var(--color-accent, var(--color-primary, #7c5cff)); }
[data-tone="c"], .blk-tone-c { --blk-tone: #0e9f8a; }
[data-tone="d"], .blk-tone-d { --blk-tone: #d97706; }
[data-tone="e"], .blk-tone-e { --blk-tone: #e11d48; }

/* 本文速览卡 */
.blk-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;
}
.blk-summary strong { display: block; font-size: 0.8125rem; letter-spacing: 0.02em; opacity: 0.75; margin-bottom: 0.25rem; }
.blk-summary p { margin: 0; font-size: inherit !important; }

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

/* 编号步骤卡 */
.blk-steps { list-style: none; counter-reset: bcstep; padding: 0; display: grid; gap: 0.75rem; }
.blk-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);
}
.blk-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));
}
.blk-step h4 { margin: 0 0 0.25rem; font-size: 0.9375rem !important; line-height: 1.5; }
.blk-step p { margin: 0; font-size: 0.875rem; line-height: 1.65; opacity: 0.88; }

/* 对比卡组 */
.blk-compare { display: grid; gap: 0.75rem; }
.blk-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);
}
.blk-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);
}
.blk-compare__item > header { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.375rem; }
.blk-compare__item h4 { margin: 0; font-size: 0.9375rem !important; line-height: 1.5; }
.blk-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));
}
.blk-compare__item p { margin: 0 0 0.375rem; font-size: 0.875rem; line-height: 1.65; opacity: 0.88; }
.blk-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 */
.blk-faq { display: grid; gap: 0.75rem; }
.blk-faq__item {
  --blk-tone: var(--color-primary, #4f7cff);
  border: 1px solid color-mix(in srgb, var(--blk-tone) 26%, transparent);
  background: color-mix(in srgb, var(--blk-tone) 6%, transparent);
  border-radius: 12px;
  padding: 0.875rem 1rem;
}
.blk-faq__item h4 { margin: 0 0 0.3125rem; font-size: 0.9375rem !important; line-height: 1.5; }
.blk-faq__item h4::before { content: "Q "; font-weight: 800; color: color-mix(in srgb, var(--blk-tone) 62%, var(--color-text, currentColor)); }
.blk-faq__item p { margin: 0; font-size: 0.875rem; line-height: 1.65; opacity: 0.88; }

/* 报错排查卡 */
.blk-errors { display: grid; gap: 0.75rem; }
.blk-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);
}
.blk-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;
}
.blk-error p { margin: 0; font-size: 0.875rem; line-height: 1.65; opacity: 0.88; }

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

/* 双栏方案面板 */
.blk-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;
}
.blk-scheme__title { margin: 0 0 0.75rem; font-size: 1rem !important; line-height: 1.5; }
.blk-scheme__cols { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.blk-scheme__col h5 { margin: 0 0 0.375rem; font-size: 0.875rem; line-height: 1.5; opacity: 0.92; }
.blk-scheme__col ul { margin: 0; padding-left: 1.125rem; font-size: 0.875rem; line-height: 1.7; }
.blk-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 */
.blk-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;
}
.blk-insight h4 { margin: 0 0 0.25rem; font-size: 0.9375rem !important; line-height: 1.5; }
.blk-insight h4::before { content: "💡 "; }
.blk-insight p { margin: 0; font-size: 0.875rem; line-height: 1.68; opacity: 0.9; }

/* 流程链 */
.blk-flow { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; }
.blk-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);
}
.blk-flow span:not(:last-child)::after {
  content: "→";
  margin-left: 0.5rem; margin-right: -0.25rem;
  opacity: 0.45;
}

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

/* ═══ article-shell v1(面板统一追加,勿手改;文章页骨架几何——限宽/对齐/节奏由此钉死,
   上方站点自有样式只负责这些类的皮肤:颜色/字体/背景/边框 ═══ */
.breadcrumbs, nav.breadcrumb, nav.breadcrumbs {
  max-width: 660px; margin-inline: auto; padding-inline: clamp(16px, 4vw, 24px);
  display: flex; align-items: center; gap: 0.5rem;
  white-space: nowrap; overflow: hidden;
  font-size: 13px; line-height: 1.5;
  margin-top: 1.5rem; margin-bottom: 1.25rem;
}
.breadcrumbs a, nav.breadcrumb a, nav.breadcrumbs a { text-decoration: none; color: inherit; opacity: 0.62; }
.breadcrumbs a:hover, nav.breadcrumb a:hover, nav.breadcrumbs a:hover { opacity: 1; }
.breadcrumbs [aria-hidden], nav.breadcrumb [aria-hidden], nav.breadcrumbs [aria-hidden] { opacity: 0.35; }
.breadcrumbs [aria-current="page"], nav.breadcrumb [aria-current="page"], nav.breadcrumbs [aria-current="page"] {
  max-width: 30ch; overflow: hidden; text-overflow: ellipsis; flex: 0 1 auto; min-width: 0; opacity: 0.85;
}
.post-intro { padding-block: 0.75rem 2rem; }
.head-col { max-width: 660px; margin-inline: auto; padding-inline: clamp(16px, 4vw, 24px); }
.byline-row { margin: 0 0 1.1rem; font-size: 13px; line-height: 1.6; opacity: 0.72; }
.head-col h1 { margin: 0; max-width: 100%; line-height: 1.28; font-size: clamp(1.5rem, 1.1rem + 1.4vw, 2rem); }
.entry-lead { margin: 1.2rem 0 0; font-size: clamp(0.9375rem, 0.85rem + 0.45vw, 1.125rem); line-height: 1.7; opacity: 0.82; }
.article-body { max-width: 660px; margin-inline: auto; padding-inline: clamp(16px, 4vw, 24px); padding-block: 0.25rem 3rem; }
.article-body > h2:first-of-type { margin-top: 0; }