:root {
  --blog-title-size: clamp(1.75rem, 1.2rem + 2vw, 3rem);
  --post-title-size: clamp(1.5rem, 1.1rem + 1.4vw, 2rem);
  --post-lead-size: clamp(0.9375rem, 0.85rem + 0.45vw, 1.125rem);
  --blog-h2-size: clamp(1.25rem, 1.1rem + 0.5vw, 1.5rem);
  --blog-h3-size: clamp(1.0625rem, 1rem + 0.25vw, 1.25rem);
  --blog-meta-size: 0.8125rem;
  --blog-text-size: 1rem;
  --blog-title-leading: 1.32;
  --blog-copy-leading: 1.7;
  --blog-card-gap: 1.25rem;
  --blog-card-pad: clamp(1.25rem, 2vw, 2rem);
  --blog-breadcrumb-gap: 0.5rem;
  --blog-breadcrumb-top: 1.5rem;
  --blog-breadcrumb-bottom: 1.25rem;
  --blog-head-gap: 1rem;
  --blog-chapter-gap: 2.5rem;
  --blog-focus-width: 2px;
  --blog-focus-offset: 4px;
}

.blog-main {
  padding-top: var(--space-6);
  padding-bottom: var(--section-gap);
  color: var(--text);
}

.blog-list-intro {
  padding-block: var(--space-6);
}

.blog-list-intro h1 {
  display: block;
  max-width: 100%;
  margin-block: var(--blog-head-gap);
  color: var(--text);
  font-family: var(--font-display);
  font-size: var(--blog-title-size);
  font-weight: var(--weight-regular);
  line-height: var(--blog-title-leading);
  letter-spacing: var(--tracking-title);
  overflow-wrap: break-word;
}

.blog-list-lead {
  max-width: var(--reading);
  color: var(--text-soft);
  font-size: var(--post-lead-size);
  line-height: var(--blog-copy-leading);
}

.blog-scope {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-5);
  color: var(--text-muted);
  font-size: var(--size-small);
}

.blog-scope p {
  flex: 1 1 22rem;
  margin: 0;
}

.blog-catalog {
  margin-top: var(--section-gap);
  padding: var(--blog-card-pad);
  border: 1px solid var(--stroke-10);
  border-radius: var(--r-section);
  background: var(--bg-panel);
  box-shadow: inset 0 1px 0 var(--inner-hi);
}

.blog-catalog-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.blog-catalog-heading h2 {
  margin: 0;
  color: var(--text);
  font-family: var(--font-display);
  font-size: var(--blog-h2-size);
  font-weight: var(--weight-regular);
  letter-spacing: var(--tracking-title);
}

#blog-count {
  margin: 0;
  color: var(--text-muted);
  font-size: var(--blog-meta-size);
}

.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-block: var(--space-5);
}

.blog-filter {
  min-height: 44px;
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  background: var(--bg-panel-2);
  color: var(--text-soft);
  font-family: var(--font-body);
  font-size: var(--size-small);
  font-weight: var(--weight-regular);
  line-height: var(--blog-copy-leading);
  cursor: pointer;
  transition: border-color var(--time-fast) var(--ease), color var(--time-fast) var(--ease);
}

.blog-filter:hover {
  border-color: var(--accent);
  color: var(--text);
}

.blog-filter[aria-pressed="true"] {
  border-color: var(--accent);
  background: var(--accent-a08);
  color: var(--accent);
  box-shadow: inset 0 -2px 0 var(--accent);
}

.blog-filter:focus-visible,
.article-card a:focus-visible,
.post-nav-card:focus-visible,
.blog-skip:focus-visible {
  outline: var(--blog-focus-width) solid var(--link);
  outline-offset: var(--blog-focus-offset);
  border-radius: var(--r-focus);
}

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

.article-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: var(--blog-card-pad);
  border: 1px solid var(--stroke-10);
  border-radius: var(--r-cell);
  background: var(--bg-panel-2);
  color: var(--text);
  box-shadow: inset 0 1px 0 var(--inner-hi);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: var(--blog-meta-size);
  line-height: var(--blog-copy-leading);
}

.article-meta time,
.post-nav-date {
  font-variant-numeric: tabular-nums;
}

.article-meta .badge {
  white-space: normal;
  color: var(--text-soft);
}

.article-card h3 {
  display: block;
  max-width: 100%;
  margin-block: var(--space-4) var(--space-3);
  font-family: var(--font-display);
  font-size: var(--blog-h3-size);
  font-weight: var(--weight-regular);
  line-height: var(--blog-copy-leading);
  letter-spacing: var(--tracking-title);
  overflow-wrap: anywhere;
}

.article-card h3 a {
  color: var(--text);
  text-decoration: none;
}

.article-card h3 a:hover {
  color: var(--accent);
}

.article-summary {
  margin: 0 0 var(--space-5);
  color: var(--text-muted);
  font-size: var(--blog-text-size);
  line-height: var(--blog-copy-leading);
  overflow-wrap: anywhere;
}

.article-card .article-read {
  align-self: flex-start;
  margin-top: auto;
  color: var(--link);
  font-size: var(--size-small);
  text-underline-offset: var(--blog-focus-offset);
}

.blog-empty {
  grid-column: 1 / -1;
  margin: 0;
  padding-block: var(--space-5);
  color: var(--text-muted);
  line-height: var(--blog-copy-leading);
}

.blog-empty a {
  color: var(--link);
}

.blog-skip {
  position: absolute;
  z-index: 100;
  top: var(--space-3);
  left: var(--gutter);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--r-btn);
  background: var(--bg-panel-2);
  color: var(--text);
  clip-path: inset(50%);
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  white-space: nowrap;
}

.blog-skip:focus {
  clip-path: none;
  width: auto;
  height: auto;
  padding: var(--space-3) var(--space-4);
  white-space: normal;
}

/* 标准骨架的几何规则由构建追加；此处只定义其皮肤。 */
.crumbs,
.post-info {
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: var(--blog-meta-size);
  line-height: var(--blog-copy-leading);
}

.crumbs a {
  color: var(--text-muted);
  text-decoration: none;
}

.crumbs a:hover {
  color: var(--accent);
}

.crumbs [aria-hidden="true"] {
  color: var(--text-dim);
}

.crumbs [aria-current="page"] {
  color: var(--text-muted);
}

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

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

.post-lead {
  color: var(--text-soft);
  font-family: var(--font-body);
  font-size: var(--post-lead-size);
  line-height: var(--blog-copy-leading);
}

.article-prose {
  color: var(--text-soft);
  font-family: var(--font-body);
  font-size: var(--blog-text-size);
  line-height: var(--blog-copy-leading);
}

/* 兼容逐篇生成时的非标准面包屑命名。 */
.blog-breadcrumb,
nav.breadcrumb,
nav.breadcrumbs {
  display: flex;
  align-items: center;
  gap: var(--blog-breadcrumb-gap);
  margin-top: var(--blog-breadcrumb-top);
  margin-bottom: var(--blog-breadcrumb-bottom);
  overflow: hidden;
  white-space: nowrap;
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: var(--blog-meta-size);
  line-height: var(--blog-copy-leading);
}

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

.blog-breadcrumb a:hover,
nav.breadcrumb a:hover,
nav.breadcrumbs a:hover {
  color: var(--accent);
}

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

.blog-breadcrumb [aria-current="page"],
nav.breadcrumb [aria-current="page"],
nav.breadcrumbs [aria-current="page"] {
  flex: 0 1 auto;
  min-width: 0;
  max-width: 30ch;
  overflow: hidden;
  text-overflow: ellipsis;
}

.section:has(> .crumbs),
.section:has(> .blog-breadcrumb),
.section:has(> nav.breadcrumb),
.section:has(> nav.breadcrumbs) {
  margin-top: 0;
  padding-block: var(--space-3);
}

.article-hero {
  padding-block: var(--space-2) var(--space-5);
}

.article-hero h1 {
  display: block;
  max-width: 100%;
  margin-block: var(--blog-head-gap);
  color: var(--text);
  font-family: var(--font-display);
  font-size: var(--post-title-size);
  font-weight: var(--weight-regular);
  line-height: var(--blog-title-leading);
  letter-spacing: var(--tracking-title);
}

.article-hero .article-meta {
  margin-bottom: var(--blog-head-gap);
}

.article-hero .article-lead {
  margin-top: var(--blog-head-gap);
  color: var(--text-soft);
  font-size: var(--post-lead-size);
  line-height: var(--blog-copy-leading);
}

.article-prose h2,
.article-body h2 {
  display: block;
  margin-block: var(--blog-chapter-gap) var(--space-4);
  color: var(--text);
  font-family: var(--font-display);
  font-size: var(--blog-h2-size);
  font-weight: var(--weight-regular);
  line-height: var(--blog-title-leading);
  letter-spacing: var(--tracking-title);
}

.article-prose h3,
.article-body h3 {
  display: block;
  margin-block: var(--space-5) var(--space-3);
  color: var(--text);
  font-family: var(--font-display);
  font-size: var(--blog-h3-size);
  font-weight: var(--weight-regular);
  line-height: var(--blog-title-leading);
}

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

.article-prose section,
.article-body section {
  margin-block: 0;
  padding-block: 0;
}

.article-prose section + section,
.article-body section + section {
  margin-top: var(--blog-chapter-gap);
}

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

.article-prose p,
.article-body p {
  margin-block: 0 var(--space-4);
  line-height: var(--blog-copy-leading);
  overflow-wrap: break-word;
}

.article-prose ul,
.article-prose ol,
.article-body ul,
.article-body ol {
  margin-block: var(--space-4);
  padding-inline-start: var(--space-5);
}

.article-prose li + li,
.article-body li + li {
  margin-top: var(--space-2);
}

.prose a:not([class*="btn"]):not([class*="button"]):not(.app-store):not(.post-nav-card),
.article-prose a:not([class*="btn"]):not([class*="button"]):not(.app-store):not(.post-nav-card),
.article-body a:not([class*="btn"]):not([class*="button"]):not(.app-store):not(.post-nav-card) {
  color: var(--link);
  text-underline-offset: var(--blog-focus-offset);
}

.article-prose :not(pre) > code,
.article-body :not(pre) > code {
  border-radius: var(--r-focus);
  background: var(--veil-1);
  color: var(--text);
  font-family: var(--font-mono-cjk);
  font-size: var(--size-small);
  overflow-wrap: anywhere;
}

.article-prose pre,
.article-body pre {
  max-width: 100%;
  margin-block: var(--space-5);
  padding: var(--space-4);
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--r-panel);
  background: var(--bg-panel);
  color: var(--text);
  font-family: var(--font-mono-cjk);
  font-size: var(--size-small);
  line-height: var(--blog-copy-leading);
}

.article-prose pre code,
.article-body pre code {
  font-family: inherit;
  white-space: pre;
  overflow-wrap: normal;
  word-break: normal;
}

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

.article-prose table,
.article-body table,
.prose table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
  color: var(--text-soft);
  font-size: var(--size-small);
}

.article-prose th,
.article-prose td,
.article-body th,
.article-body td {
  min-width: 7em;
  padding: var(--space-3);
  border-bottom: 1px solid var(--border);
  text-align: start;
  vertical-align: top;
  word-break: normal;
  overflow-wrap: normal;
}

.article-prose th,
.article-body th {
  background: var(--bg-panel-2);
  color: var(--text);
  font-weight: var(--weight-medium);
}

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

.article-prose .store-endnote,
.article-body .store-endnote {
  margin-block: var(--blog-chapter-gap);
  padding: var(--blog-card-pad);
  border: 1px solid var(--stroke-16);
  border-radius: var(--r-cell);
  background: var(--bg-panel);
  color: var(--text-soft);
  box-shadow: inset 0 1px 0 var(--inner-hi);
}

.store-endnote h3 {
  margin-top: 0;
  color: var(--text);
  font-family: var(--font-display);
  font-size: var(--blog-h3-size);
  font-weight: var(--weight-regular);
}

#related-posts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
  gap: var(--blog-card-gap);
  max-width: var(--reading);
  margin-block: var(--space-5);
}

#related-posts .article-card h3 a {
  color: var(--text);
  text-decoration: none;
}

#related-posts .article-card h3 a:hover {
  color: var(--accent);
}

#post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--blog-card-gap);
  margin-block: var(--space-5) var(--blog-chapter-gap);
}

.post-nav-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  min-width: 0;
  padding: var(--blog-card-pad);
  border: 1px solid var(--border);
  border-radius: var(--r-panel);
  background: var(--bg-panel);
  color: var(--text);
  text-decoration: none;
}

.post-nav-card:hover {
  border-color: var(--accent);
}

.post-nav-card--next {
  grid-column: 2;
}

.post-nav-label {
  color: var(--link);
  font-size: var(--blog-meta-size);
}

.post-nav-title {
  color: var(--text);
  font-family: var(--font-display);
  font-size: var(--blog-text-size);
  line-height: var(--blog-copy-leading);
  overflow-wrap: anywhere;
}

.post-nav-date {
  margin-top: auto;
  color: var(--text-muted);
  font-size: var(--blog-meta-size);
}

@media (max-width: 640px) {
  .blog-list-intro h1 {
    font-size: clamp(1.5rem, 5vw, 1.875rem);
  }

  .post-intro h1,
  .article-hero h1 {
    font-size: 1.5rem;
  }

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

  .post-nav-card--next {
    grid-column: auto;
  }

  .blog-catalog {
    border-radius: var(--r-cell);
  }
}

@media (prefers-reduced-motion: reduce) {
  .blog-filter {
    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 ═══ */
.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 ═══ */
.crumbs, 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;
}
.crumbs a, nav.breadcrumb a, nav.breadcrumbs a { text-decoration: none; color: inherit; opacity: 0.62; }
.crumbs a:hover, nav.breadcrumb a:hover, nav.breadcrumbs a:hover { opacity: 1; }
.crumbs [aria-hidden], nav.breadcrumb [aria-hidden], nav.breadcrumbs [aria-hidden] { opacity: 0.35; }
.crumbs [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 1.5rem; }
.intro-inner { max-width: 660px; margin-inline: auto; padding-inline: clamp(16px, 4vw, 24px); }
.post-info { 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); }
.post-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-prose { max-width: 660px; margin-inline: auto; padding-inline: clamp(16px, 4vw, 24px); padding-block: 0.25rem 3rem; }
.article-prose > h2:first-of-type { margin-top: 0; }