:root {
  --blog-space-xs: 0.5rem;
  --blog-space-sm: 0.75rem;
  --blog-space-md: 1rem;
  --blog-space-lg: 1.25rem;
  --blog-space-xl: 1.5rem;
  --blog-space-2xl: 2rem;
  --blog-space-3xl: 2.5rem;
  --blog-space-4xl: 3rem;
  --blog-index-space: 4rem;
  --blog-card-min: 300px;
  --blog-modal-width: 30rem;
  --blog-modal-inset: 2rem;
  --blog-modal-max-height: 85dvh;
  --blog-modal-duration: 160ms;
  --blog-modal-offset: 8px;
  --blog-small: 0.8125rem;
  --blog-label: 0.875rem;
  --blog-body: 1rem;
  --blog-card-heading: 1.25rem;
  --blog-h2: 1.5rem;
  --blog-list-title: clamp(1.75rem, 1.1rem + 2.1vw, 3rem);
  --blog-article-title: clamp(1.5rem, 1.1rem + 1.4vw, 2rem);
  --blog-lead: clamp(0.9375rem, 0.85rem + 0.45vw, 1.125rem);
  --blog-body-leading: 1.85;
  --blog-heading-leading: 1.4;
  --blog-title-leading: 1.32;
  --blog-focus-width: 2px;
  --blog-focus-offset: 4px;
  --blog-stroke: 1px;
  --blog-link-offset: 0.2em;
  --blog-trail-current-width: 30ch;
  --blog-trail-link-opacity: 0.66;
  --blog-trail-separator-opacity: 0.35;
  --blog-keyword-pad: 0.12em;
  --blog-shadow: 0 16px 48px rgb(11 26 19 / 16%);
  --blog-backdrop: rgb(11 26 19 / 56%);
  --blog-code-bg: var(--bg-panel);
  --blog-code-text: var(--text);
}

.blog-skip {
  position: fixed;
  inset-block-start: var(--blog-space-sm);
  inset-inline-start: var(--blog-space-md);
  z-index: 100;
  padding: var(--blog-space-sm) var(--blog-space-md);
  border-radius: var(--r-ctl);
  background: var(--bg);
  color: var(--text);
  box-shadow: var(--blog-shadow);
  transform: translateY(-200%);
}

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

.blog-index {
  padding-block: var(--blog-index-space);
}

.blog-index__head {
  padding-block-end: var(--blog-space-3xl);
}

.blog-eyebrow {
  margin: 0 0 var(--blog-space-md);
  color: var(--text-muted);
  font-size: var(--blog-label);
  font-weight: var(--weight-strong);
}

.blog-index__head h1 {
  display: block;
  margin: 0;
  max-width: 100%;
  color: var(--text);
  font-family: var(--font-display);
  font-size: var(--blog-list-title);
  font-weight: var(--weight-display);
  line-height: var(--blog-title-leading);
}

.blog-highlight {
  padding-inline: var(--blog-keyword-pad);
  background: var(--hl);
  color: var(--text);
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.blog-index__lead {
  margin: var(--blog-space-lg) 0 0;
  color: var(--text-muted);
  font-size: var(--blog-lead);
  line-height: 1.7;
}

.blog-library {
  border-top: var(--blog-stroke) solid var(--border);
  padding-block-start: var(--blog-space-xl);
}

.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--blog-space-xs);
}

.blog-filter {
  min-height: 44px;
  padding: var(--blog-space-sm) var(--blog-space-md);
  border: var(--blog-stroke) solid var(--border);
  border-radius: var(--r-ctl);
  background: var(--bg);
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: var(--blog-label);
  font-weight: var(--weight-strong);
  cursor: pointer;
}

.blog-filter:hover {
  background: var(--bg-panel);
  color: var(--text);
}

.blog-filter[aria-pressed="true"] {
  border-color: var(--text);
  background: var(--bg-panel);
  color: var(--text);
  box-shadow: inset 0 -3px 0 var(--accent);
}

.blog-results {
  margin: var(--blog-space-lg) 0;
  color: var(--text-muted);
  font-size: var(--blog-small);
}

.blog-post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, var(--blog-card-min)), 1fr));
  gap: var(--blog-space-xl);
}

.blog-post-card,
.blog-related-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: var(--blog-space-xl);
  border: var(--blog-stroke) solid var(--border);
  border-radius: var(--r-card);
  background: var(--bg);
  color: var(--text);
}

.blog-card-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--blog-space-sm);
  color: var(--text-muted);
  font-size: var(--blog-small);
  line-height: 1.6;
}

.blog-topic {
  display: inline-block;
  padding: 0.2em 0.6em;
  border: var(--blog-stroke) solid var(--border);
  border-radius: var(--r-inner);
  background: var(--bg-panel);
  color: var(--text-muted);
}

.blog-card-title,
.blog-related-title {
  display: block;
  margin: var(--blog-space-md) 0 var(--blog-space-sm);
  color: var(--text);
  font-family: var(--font-display);
  font-size: var(--blog-card-heading);
  font-weight: var(--weight-strong);
  line-height: 1.6;
  overflow-wrap: anywhere;
}

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

.blog-card-title a:hover,
.blog-related-title a:hover {
  text-decoration: underline;
  text-underline-offset: var(--blog-link-offset);
}

.blog-card-summary {
  margin: 0 0 var(--blog-space-lg);
  color: var(--text-muted);
  font-size: var(--blog-label);
  line-height: 1.8;
  overflow-wrap: anywhere;
}

.blog-read-link {
  align-self: flex-start;
  margin-top: auto;
  color: var(--text);
  font-size: var(--blog-label);
  font-weight: var(--weight-strong);
  text-decoration: underline;
  text-underline-offset: var(--blog-link-offset);
}

.blog-empty {
  grid-column: 1 / -1;
  padding: var(--blog-space-xl);
  border-radius: var(--r-card);
  background: var(--bg-panel);
  color: var(--text-muted);
  line-height: 1.8;
}

.blog-empty a {
  color: var(--accent-dark);
  text-underline-offset: var(--blog-link-offset);
}

/* 标准文章骨架的限宽与间距由构建面板追加；这里只提供皮肤。 */
.trail-nav,
.article-head,
.intro-inner {
  color: var(--text);
  font-family: var(--font-body);
}

.article-head {
  background: var(--bg);
}

.article-head h1 {
  display: block;
  max-width: 100%;
  color: var(--text);
  font-family: var(--font-display);
  font-size: var(--blog-article-title);
  font-weight: var(--weight-display);
  line-height: var(--blog-title-leading);
  overflow-wrap: anywhere;
}

.meta-row {
  color: var(--text-muted);
  font-size: var(--blog-small);
  line-height: 1.6;
}

.intro-lead {
  color: var(--text-muted);
  font-size: var(--blog-lead);
  line-height: 1.7;
}

/* 为非标准文章骨架接住常见面包屑别名。 */
.blog-breadcrumb,
nav.breadcrumb,
nav.breadcrumbs {
  display: flex;
  align-items: center;
  gap: var(--blog-space-xs);
  margin-top: var(--blog-space-lg);
  margin-bottom: var(--blog-space-lg);
  white-space: nowrap;
  overflow: hidden;
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: var(--blog-small);
  line-height: 1.6;
}

.trail-nav {
  font-size: var(--blog-small);
  line-height: 1.6;
  white-space: nowrap;
  overflow: hidden;
}

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

:is(.trail-nav, .blog-breadcrumb, nav.breadcrumb, nav.breadcrumbs) a:hover {
  color: var(--accent-dark);
  opacity: 1;
}

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

:is(.blog-breadcrumb, nav.breadcrumb, nav.breadcrumbs) [aria-current="page"] {
  flex: 0 1 auto;
  min-width: 0;
  max-width: var(--blog-trail-current-width);
  overflow: hidden;
  text-overflow: ellipsis;
}

.trail-nav [aria-current="page"] {
  overflow: hidden;
  text-overflow: ellipsis;
}

.section:has(> .blog-breadcrumb),
.section:has(> nav.breadcrumb),
.section:has(> nav.breadcrumbs) {
  padding-block: var(--blog-space-xl);
}

.prose {
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--blog-body);
  line-height: var(--blog-body-leading);
  overflow-wrap: anywhere;
}

.prose h2,
.prose h3 {
  display: block;
  color: var(--text);
  font-family: var(--font-display);
  font-weight: var(--weight-strong);
  line-height: var(--blog-heading-leading);
  scroll-margin-top: calc(var(--header-height) + var(--blog-space-md));
}

.prose h2 {
  margin-block: var(--blog-space-2xl) var(--blog-space-md);
  font-size: var(--blog-h2);
}

.prose h3 {
  margin-block: var(--blog-space-xl) var(--blog-space-sm);
  font-size: var(--blog-card-heading);
}

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

.prose p,
.prose ul,
.prose ol,
.prose blockquote,
.prose pre,
.prose figure,
.prose .table-scroll,
.prose details {
  margin-block: var(--blog-space-md);
}

.prose li + li {
  margin-top: var(--blog-space-xs);
}

.prose section,
.prose section.section {
  padding-block: 0;
  margin-block: var(--blog-space-xl);
}

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

.prose a:not([class*="btn"]):not([class*="button"]) {
  color: var(--accent-dark);
  text-decoration: underline;
  text-underline-offset: var(--blog-link-offset);
}

.prose code {
  border-radius: var(--r-inner);
  background: var(--blog-code-bg);
  color: var(--blog-code-text);
  font-family: var(--font-mono);
  font-size: 0.9em;
  overflow-wrap: anywhere;
}

.prose pre {
  max-width: 100%;
  padding: var(--blog-space-lg);
  border: var(--blog-stroke) solid var(--border);
  border-radius: var(--r-card);
  overflow-x: auto;
  background: var(--blog-code-bg);
  color: var(--blog-code-text);
  font-family: var(--font-mono);
  font-size: var(--blog-label);
  line-height: 1.7;
  white-space: pre;
}

.prose pre code {
  font-size: inherit;
  overflow-wrap: normal;
}

.prose blockquote {
  padding: var(--blog-space-md) var(--blog-space-lg);
  border-inline-start: 3px solid var(--border-strong);
  background: var(--bg-panel);
  color: var(--text-muted);
}

.prose img,
.prose svg {
  max-width: 100%;
}

.prose img {
  height: auto;
}

.prose .table-scroll {
  max-width: 100%;
  overflow-x: auto;
}

.prose table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
  color: var(--text);
  font-size: var(--blog-label);
}

.prose th,
.prose td {
  min-width: 7em;
  padding: var(--blog-space-sm) var(--blog-space-md);
  border: var(--blog-stroke) solid var(--border);
  text-align: start;
  vertical-align: top;
  word-break: normal;
  overflow-wrap: normal;
}

.prose th {
  background: var(--bg-panel);
  font-weight: var(--weight-strong);
}

.dl-card {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--blog-space-lg);
  margin-block: var(--blog-space-2xl);
  padding: var(--blog-space-xl);
  border: var(--blog-stroke) solid var(--border);
  border-radius: var(--r-card);
  background: var(--bg-panel);
  color: var(--text);
}

.dl-card > div {
  flex: 1 1 16rem;
  min-width: 0;
}

.dl-card h2,
.dl-card h3 {
  display: block;
  margin: 0 0 var(--blog-space-xs);
  font-size: var(--blog-card-heading);
}

.dl-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: var(--blog-label);
}

.blog-related-section,
.blog-post-navigation {
  margin-block: var(--blog-space-2xl);
}

.blog-related-section > h2 {
  display: block;
  margin: 0 0 var(--blog-space-lg);
  color: var(--text);
  font-size: var(--blog-h2);
  font-weight: var(--weight-strong);
}

#related-posts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--blog-space-md);
  container-type: inline-size;
}

.prose #related-posts {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, var(--blog-card-min)), 1fr));
}

#post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--blog-space-md);
  margin-block: var(--blog-space-2xl);
}

.blog-neighbor {
  display: block;
  min-width: 0;
  padding: var(--blog-space-lg);
  border: var(--blog-stroke) solid var(--border);
  border-radius: var(--r-card);
  background: var(--bg);
  color: var(--text);
  text-decoration: none;
}

.blog-neighbor--next {
  grid-column: 2;
}

.blog-neighbor:hover {
  background: var(--bg-panel);
}

.blog-neighbor-label {
  display: block;
  margin-bottom: var(--blog-space-xs);
  color: var(--text-muted);
  font-size: var(--blog-small);
}

.blog-neighbor-title {
  display: block;
  color: var(--text);
  font-size: var(--blog-body);
  font-weight: var(--weight-strong);
  line-height: 1.7;
  overflow-wrap: anywhere;
}

.blog-download-dialog {
  width: min(var(--blog-modal-width), calc(100% - var(--blog-modal-inset)));
  max-height: var(--blog-modal-max-height);
  margin: auto;
  padding: 0;
  overflow: auto;
  border: var(--blog-stroke) solid var(--border);
  border-radius: var(--r-field);
  background: var(--bg);
  color: var(--text);
  box-shadow: var(--blog-shadow);
  font-family: var(--font-body);
}

.blog-download-dialog::backdrop {
  background: var(--blog-backdrop);
}

.blog-download-dialog[open] {
  animation: blog-dialog-enter var(--blog-modal-duration) ease-out both;
}

.blog-download-dialog[open]::backdrop {
  animation: blog-backdrop-enter var(--blog-modal-duration) ease-out both;
}

.blog-download-dialog.is-closing {
  animation: blog-dialog-exit var(--blog-modal-duration) ease-in both;
}

.blog-download-dialog.is-closing::backdrop {
  animation: blog-backdrop-exit var(--blog-modal-duration) ease-in both;
}

.blog-download-dialog__panel {
  padding: var(--blog-space-2xl);
}

.blog-download-dialog__close {
  display: block;
  min-height: 44px;
  margin: 0 0 var(--blog-space-md) auto;
  padding: var(--blog-space-xs) var(--blog-space-sm);
  border: var(--blog-stroke) solid var(--border);
  border-radius: var(--r-ctl);
  background: var(--bg);
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: var(--blog-label);
  cursor: pointer;
}

.blog-download-dialog__close:hover {
  background: var(--bg-panel);
  color: var(--text);
}

.blog-download-dialog__eyebrow {
  margin: 0 0 var(--blog-space-sm);
  color: var(--text-muted);
  font-size: var(--blog-small);
}

.blog-download-dialog__title {
  display: block;
  margin: 0;
  color: var(--text);
  font-family: var(--font-display);
  font-size: var(--blog-h2);
  font-weight: var(--weight-strong);
  line-height: var(--blog-heading-leading);
}

.blog-download-dialog__description {
  margin: var(--blog-space-md) 0 var(--blog-space-xl);
  color: var(--text-muted);
  font-size: var(--blog-body);
  line-height: 1.7;
}

:is(.blog-index, .blog-download-dialog, #related-posts, #post-nav) :focus-visible {
  outline: var(--blog-focus-width) solid var(--text);
  outline-offset: var(--blog-focus-offset);
}

body:has(.article-head) {
  padding-bottom: calc(var(--blog-space-4xl) + var(--blog-space-4xl));
}

@keyframes blog-dialog-enter {
  from {
    opacity: 0;
    transform: translateY(var(--blog-modal-offset));
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes blog-dialog-exit {
  from {
    opacity: 1;
    transform: translateY(0);
  }
  to {
    opacity: 0;
    transform: translateY(var(--blog-modal-offset));
  }
}

@keyframes blog-backdrop-enter {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes blog-backdrop-exit {
  from { opacity: 1; }
  to { opacity: 0; }
}

@media (max-width: 700px) {
  .blog-index {
    padding-block: var(--blog-space-2xl);
  }

  .blog-index__head h1 {
    font-size: 1.875rem;
  }

  .blog-index__head {
    padding-block-end: var(--blog-space-2xl);
  }

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

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

  .blog-neighbor--next {
    grid-column: auto;
  }

  .blog-download-dialog__panel {
    padding: var(--blog-space-xl);
  }
}

@media (max-width: 480px) {
  .article-head h1 {
    font-size: 1.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .blog-download-dialog[open],
  .blog-download-dialog.is-closing,
  .blog-download-dialog[open]::backdrop,
  .blog-download-dialog.is-closing::backdrop {
    animation: 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 ═══ */
.sec-summary, .sec-stats, .sec-steps, .sec-compare, .sec-faq, .sec-errors,
.sec-config, .sec-scheme, .sec-insight, .sec-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"], .sec-tone-a { --sec-tone: var(--color-primary, #4f7cff); }
[data-tone="b"], .sec-tone-b { --sec-tone: var(--color-accent, var(--color-primary, #7c5cff)); }
[data-tone="c"], .sec-tone-c { --sec-tone: #0e9f8a; }
[data-tone="d"], .sec-tone-d { --sec-tone: #d97706; }
[data-tone="e"], .sec-tone-e { --sec-tone: #e11d48; }

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

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

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

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

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

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

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

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

@media (max-width: 720px) {
  .sec-stats, .sec-stats[data-cols="4"] { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sec-config, .sec-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 ═══ */
.trail-nav, nav.breadcrumb, nav.breadcrumbs {
  max-width: 620px; 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;
}
.trail-nav a, nav.breadcrumb a, nav.breadcrumbs a { text-decoration: none; color: inherit; opacity: 0.62; }
.trail-nav a:hover, nav.breadcrumb a:hover, nav.breadcrumbs a:hover { opacity: 1; }
.trail-nav [aria-hidden], nav.breadcrumb [aria-hidden], nav.breadcrumbs [aria-hidden] { opacity: 0.35; }
.trail-nav [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;
}
.article-head { padding-block: 0.75rem 1.5rem; }
.intro-inner { max-width: 620px; margin-inline: auto; padding-inline: clamp(16px, 4vw, 24px); }
.meta-row { margin: 0 0 1.1rem; font-size: 13px; line-height: 1.6; opacity: 0.72; }
.intro-inner h1 { margin: 0; max-width: 100%; line-height: 1.28; font-size: clamp(1.5rem, 1.1rem + 1.4vw, 2rem); }
.intro-lead { margin: 1.2rem 0 0; font-size: clamp(0.9375rem, 0.85rem + 0.45vw, 1.125rem); line-height: 1.7; opacity: 0.82; }
.prose { max-width: 620px; margin-inline: auto; padding-inline: clamp(16px, 4vw, 24px); padding-block: 0.25rem 3rem; }
.prose > h2:first-of-type { margin-top: 0; }