.blog-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(3.5rem, 8vw, 6.5rem);
  background:
    radial-gradient(circle at 18% 28%, var(--color-brand-wash), var(--color-sky-top) 42%, var(--color-sky-bottom));
  border-bottom: 1px solid var(--color-line);
}

.blog-hero::before,
.blog-hero::after {
  position: absolute;
  content: "";
  border-radius: var(--radius-pill);
  pointer-events: none;
}

.blog-hero::before {
  width: min(32rem, 58vw);
  height: min(12rem, 24vw);
  right: -5rem;
  bottom: -5rem;
  background: var(--color-hill-light);
  transform: rotate(-7deg);
}

.blog-hero::after {
  width: min(22rem, 42vw);
  height: min(8rem, 18vw);
  right: 18%;
  bottom: -4rem;
  background: var(--color-hill-pale);
  transform: rotate(5deg);
}

.blog-hero .wrap {
  position: relative;
  z-index: 1;
}

.blog-hero__eyebrow,
.section-kicker {
  margin: 0 0 0.75rem;
  color: var(--color-success-deep);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.blog-hero h1 {
  max-width: 18ch;
  margin: 0;
  color: var(--color-brand-deep);
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.6vw, 3rem);
  font-weight: 500;
  line-height: 1.16;
  letter-spacing: -0.035em;
}

.blog-hero__lead {
  max-width: 44rem;
  margin: 1.25rem 0 0;
  color: var(--color-ink-muted);
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  line-height: 1.8;
}

.blog-browser {
  padding-block: clamp(3.5rem, 7vw, 6.5rem);
  background: var(--color-surface);
}

.blog-browser__head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 1.25rem;
}

.blog-browser__head h2 {
  margin: 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 3vw, 2.25rem);
  font-weight: 500;
  line-height: 1.25;
}

.blog-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
}

.blog-filter button {
  min-height: 2.5rem;
  padding: 0.55rem 1rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-surface-muted);
  color: var(--color-ink-muted);
  font: 600 0.875rem/1 var(--font-body);
  cursor: pointer;
  transition:
    color 160ms ease,
    background-color 160ms ease,
    border-color 160ms ease,
    transform 160ms ease;
}

.blog-filter button:hover {
  border-color: var(--color-brand);
  color: var(--color-brand-deep);
  transform: translateY(-1px);
}

.blog-filter button[aria-pressed="true"] {
  border-color: var(--color-brand);
  background: var(--color-brand);
  color: var(--color-surface);
}

.blog-filter button:focus-visible,
.article-card:focus-visible,
.related-card:focus-visible,
.post-nav__card:focus-visible {
  outline: 3px solid var(--color-warning);
  outline-offset: 3px;
}

.blog-result-count {
  min-height: 1.5rem;
  margin: 0 0 1.25rem;
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}

.blog-card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.article-card {
  display: flex;
  min-width: 0;
  min-height: 20rem;
  flex-direction: column;
  padding: clamp(1.35rem, 3vw, 2rem);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-canvas);
  color: var(--color-ink);
  text-decoration: none;
  transition:
    border-color 180ms ease,
    transform 180ms ease,
    background-color 180ms ease;
}

.article-card:hover {
  border-color: var(--color-brand);
  background: var(--color-surface);
  transform: translateY(-3px);
}

.article-card__meta,
.related-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.4;
}

.article-card__tag,
.related-card__meta span {
  padding: 0.28rem 0.6rem;
  border-radius: var(--radius-pill);
  background: var(--color-brand-wash);
  color: var(--color-brand-deep);
}

.article-card__title {
  margin: 1.25rem 0 0;
  color: var(--color-ink);
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  font-weight: 600;
  line-height: 1.5;
}

.article-card__summary {
  margin: 0.9rem 0 1.5rem;
  color: var(--color-ink-muted);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.article-card__more,
.related-card__more {
  margin-top: auto;
  color: var(--color-brand-deep);
  font-size: 0.875rem;
  font-weight: 700;
}

.blog-empty {
  grid-column: 1 / -1;
  margin: 0;
  padding: 2.5rem;
  border: 1px dashed var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-surface-muted);
  color: var(--color-ink-muted);
  text-align: center;
}

/* 文章页纯皮肤 */
.post-intro {
  background:
    linear-gradient(180deg, var(--color-sky-top), var(--color-surface));
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-line);
}

.byline-row {
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.5;
}

.post-intro h1,
.article-hero h1 {
  max-width: 100%;
  margin-block: 0.875rem 0.75rem;
  color: var(--color-brand-deep);
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 1.1rem + 1.4vw, 2rem);
  font-weight: 600;
  line-height: 1.32;
  letter-spacing: -0.02em;
}

.post-lead,
.article-lead {
  color: var(--color-ink-muted);
  font-size: clamp(0.9375rem, 0.85rem + 0.45vw, 1.125rem);
  line-height: 1.7;
}

.post-body,
.prose {
  color: var(--color-ink);
  font-size: 1rem;
  line-height: 1.85;
}

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

.post-body p,
.prose p {
  margin-block: 0 1.25rem;
}

.post-body > .grid--3 {
  grid-template-columns: 1fr;
}

.post-body h2,
.prose h2 {
  margin: 2.5rem 0 1rem;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 1.1rem + 0.75vw, 1.5rem);
  font-weight: 600;
  line-height: 1.4;
}

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

.post-body h3,
.prose h3 {
  margin: 2rem 0 0.8rem;
  color: var(--color-ink);
  font-size: clamp(1.125rem, 1rem + 0.4vw, 1.25rem);
  font-weight: 600;
  line-height: 1.5;
}

.post-body section,
.prose section {
  margin-block: 0 2.5rem;
  padding-block: 0;
}

.post-body ul,
.post-body ol,
.prose ul,
.prose ol {
  margin: 0 0 1.4rem;
  padding-inline-start: 1.4rem;
}

.post-body li + li,
.prose li + li {
  margin-top: 0.55rem;
}

.post-body a:not([class*="btn"]):not([class*="button"]),
.prose a:not([class*="btn"]):not([class*="button"]) {
  color: var(--color-brand-deep);
  text-decoration-color: var(--color-brand);
  text-underline-offset: 0.2em;
}

.post-body a:not([class*="btn"]):not([class*="button"]):hover,
.prose a:not([class*="btn"]):not([class*="button"]):hover {
  color: var(--color-success-deep);
  text-decoration-color: var(--color-success);
}

.post-body code,
.prose code {
  overflow-wrap: anywhere;
  padding: 0.14em 0.36em;
  border-radius: var(--radius-sm);
  background: var(--color-surface-muted);
  color: var(--color-brand-deep);
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.post-body pre,
.prose pre,
.data-table {
  max-width: 100%;
  overflow-x: auto;
}

.post-body pre,
.prose pre {
  margin: 1.5rem 0;
  padding: 1.25rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-ink);
  color: var(--color-surface);
  font: 0.875rem/1.75 var(--font-mono);
}

.post-body pre code,
.prose pre code {
  padding: 0;
  background: inherit;
  color: inherit;
}

/* 面包屑通用兜底 */
.blog-breadcrumb,
nav.breadcrumb,
nav.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
  margin-top: 1.25rem;
  margin-bottom: 1.25rem;
  overflow: hidden;
  color: var(--color-ink-muted);
  font-size: 0.8125rem;
  line-height: 1.4;
  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%, var(--color-surface));
  text-decoration: none;
}

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

.blog-breadcrumb .separator,
nav.breadcrumb .separator,
nav.breadcrumbs .separator {
  flex: 0 0 auto;
  color: color-mix(in srgb, var(--color-ink-muted) 35%, var(--color-surface));
}

.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;
  color: var(--color-ink-muted);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.article-hero {
  padding-block: 0.75rem 2.5rem;
}

.article-hero__meta {
  margin-bottom: 0.9rem;
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}

.article-hero__lead {
  margin-top: 0.9rem;
}

/* 文末下载引导 */
.end-download-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  margin-top: 2.5rem;
  padding: clamp(1.4rem, 4vw, 2.25rem);
  border-radius: var(--radius-lg);
  background: var(--color-brand);
  color: var(--color-surface);
}

.end-download-card h2 {
  margin: 0 0 0.55rem;
  color: var(--color-surface);
  font-size: clamp(1.3rem, 2.5vw, 1.75rem);
  line-height: 1.35;
}

.end-download-card p {
  margin: 0;
  color: var(--color-surface);
  line-height: 1.7;
}

/* 延伸阅读 */
.related-section {
  margin-top: 3rem;
}

.related-section > h2,
.post-navigation-section > h2 {
  margin: 0 0 1.25rem;
  color: var(--color-ink);
  font-size: clamp(1.35rem, 2.5vw, 1.75rem);
  line-height: 1.35;
}

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

.related-card {
  display: flex;
  min-width: 18.75rem;
  min-height: 15.5rem;
  flex-direction: column;
  padding: 1.35rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  color: var(--color-ink);
  text-decoration: none;
  transition:
    border-color 180ms ease,
    transform 180ms ease;
}

.related-card:hover {
  border-color: var(--color-brand);
  transform: translateY(-2px);
}

.related-card__title {
  margin: 1rem 0 0;
  color: var(--color-ink);
  font-size: 1.0625rem;
  line-height: 1.55;
}

.related-card__summary {
  display: -webkit-box;
  margin: 0.7rem 0 1.2rem;
  overflow: hidden;
  color: var(--color-ink-muted);
  font-size: 0.875rem;
  line-height: 1.7;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

/* 上一篇与下一篇 */
.post-navigation-section {
  margin-top: 2.5rem;
}

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

.post-nav__card {
  display: flex;
  min-width: 0;
  min-height: 8rem;
  flex-direction: column;
  justify-content: center;
  padding: 1.25rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface-muted);
  color: var(--color-ink);
  text-decoration: none;
}

.post-nav__card--next {
  grid-column: 2;
  text-align: right;
}

.post-nav__card:hover {
  border-color: var(--color-success);
  background: var(--color-surface);
}

.post-nav__label {
  margin-bottom: 0.55rem;
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.post-nav__card strong {
  color: var(--color-ink);
  font-size: 0.9375rem;
  line-height: 1.6;
}

@media (max-width: 52rem) {
  .blog-browser__head {
    align-items: flex-start;
    flex-direction: column;
    gap: 1.25rem;
  }

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

  .article-card {
    min-height: 0;
  }
}

@media (max-width: 43rem) {
  .blog-hero {
    padding-block: 3.25rem 4.5rem;
  }

  .blog-hero h1 {
    max-width: 100%;
    font-size: clamp(1.75rem, 8vw, 1.875rem);
  }

  .blog-browser {
    padding-block: 3rem;
  }

  .blog-filter {
    width: 100%;
  }

  .blog-filter button {
    flex: 1 1 auto;
  }

  .end-download-card {
    align-items: stretch;
    flex-direction: column;
  }

  #related-posts {
    grid-template-columns: 1fr;
  }

  .related-card {
    min-width: 0;
  }

  #post-nav {
    grid-template-columns: 1fr;
  }

  .post-nav__card--next {
    grid-column: 1;
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  .blog-filter button,
  .article-card,
  .related-card {
    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 ═══ */
.feat-summary, .feat-stats, .feat-steps, .feat-compare, .feat-faq, .feat-errors,
.feat-config, .feat-scheme, .feat-insight, .feat-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"], .feat-tone-a { --feat-tone: var(--color-primary, #4f7cff); }
[data-tone="b"], .feat-tone-b { --feat-tone: var(--color-accent, var(--color-primary, #7c5cff)); }
[data-tone="c"], .feat-tone-c { --feat-tone: #0e9f8a; }
[data-tone="d"], .feat-tone-d { --feat-tone: #d97706; }
[data-tone="e"], .feat-tone-e { --feat-tone: #e11d48; }

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

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

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

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

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

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

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

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

@media (max-width: 720px) {
  .feat-stats, .feat-stats[data-cols="4"] { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feat-config, .feat-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 ═══ */
.page-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;
}
.page-crumbs a, nav.breadcrumb a, nav.breadcrumbs a { text-decoration: none; color: inherit; opacity: 0.62; }
.page-crumbs a:hover, nav.breadcrumb a:hover, nav.breadcrumbs a:hover { opacity: 1; }
.page-crumbs [aria-hidden], nav.breadcrumb [aria-hidden], nav.breadcrumbs [aria-hidden] { opacity: 0.35; }
.page-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 1.75rem; }
.intro-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; }
.intro-col 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; }
.post-body { max-width: 660px; margin-inline: auto; padding-inline: clamp(16px, 4vw, 24px); padding-block: 0.25rem 3rem; }
.post-body > h2:first-of-type { margin-top: 0; }