:root {
  --blog-card-gap: 24px;
  --blog-card-pad: 28px;
  --blog-card-min: 300px;
  --blog-index-top: 64px;
  --blog-index-bottom: 48px;
  --blog-index-h1: clamp(30px, 3.6vw, 48px);
  --blog-index-lead: clamp(16px, 1.4vw, 20px);
  --blog-article-h1: clamp(1.5rem, 1.1rem + 1.4vw, 2rem);
  --blog-article-lead: clamp(0.9375rem, 0.85rem + 0.45vw, 1.125rem);
  --blog-h2: clamp(21px, 2vw, 24px);
  --blog-h3: clamp(18px, 1.7vw, 20px);
  --blog-meta-size: 13px;
  --blog-body-leading: 1.85;
  --blog-title-leading: 1.32;
  --blog-lead-leading: 1.7;
  --blog-card-leading: 1.5;
  --blog-small-leading: 1.6;
  --blog-tight: 4px;
  --blog-small: 8px;
  --blog-medium: 12px;
  --blog-text-gap: 16px;
  --blog-head-gap: 1rem;
  --blog-trail-bottom: 1.25rem;
  --blog-trail-top: 1.5rem;
  --blog-block-gap: 24px;
  --blog-section-gap: 40px;
  --blog-section-top-limit: 2.25rem;
  --blog-radius: var(--radius-card, 8px);
  --blog-control-radius: var(--radius-btn, 6px);
  --blog-hairline: 1px;
  --blog-underline: 2px;
  --blog-underline-offset: 0.2em;
  --blog-crumb-link-opacity: 0.65;
  --blog-crumb-separator-opacity: 0.35;
  --blog-crumb-current-limit: 30ch;
  --blog-modal-width: 560px;
  --blog-modal-edge: 20px;
  --blog-modal-pad: 36px;
  --blog-close-size: 44px;
  --blog-modal-shift: 8px;
  --blog-modal-duration: 160ms;
  --blog-modal-ease: ease-out;
  --blog-layer: var(--z-float, 30);
  --blog-bg: var(--bg, #f4f7fd);
  --blog-panel: var(--bg-panel, #ffffff);
  --blog-cell: var(--bg-panel-2, #eaf0f9);
  --blog-border: var(--border, #dde4ef);
  --blog-ink: var(--text, #1f2a36);
  --blog-muted: var(--text-muted, #5a6676);
  --blog-link: var(--accent, #1f6fc5);
  --blog-link-hover: var(--accent-dark, #17569c);
  --blog-on-link: var(--on-accent, #ffffff);
  --blog-clear: var(--clear, transparent);
  --blog-veil: var(--veil, rgb(31 42 54 / 42%));
  --blog-shadow: var(--shadow-lg, 0 24px 60px -20px rgb(31 42 54 / 12%));
  --blog-focus: var(--focus-ring, 0 0 0 3px rgb(31 111 197 / 28%));
  --blog-body-font: var(--font-body, "Inter", "Noto Sans SC", sans-serif);
  --blog-title-font: var(--font-display, "Inter", "Noto Sans SC", sans-serif);
  --blog-code-font: var(--font-mono, "JetBrains Mono", monospace);
  --blog-body-weight: var(--weight-body, 400);
  --blog-ui-weight: var(--weight-ui, 600);
  --blog-bold-weight: var(--weight-bold, 700);
  --blog-display-weight: var(--weight-display, 800);
  --blog-title-tracking: var(--tracking-display, -0.03em);
  --blog-mark: var(--mark, #fde27b);
  --blog-mark-depth: var(--mark-depth, 0.45em);
}

.blog-index {
  background: var(--blog-bg);
  color: var(--blog-ink);
}

.blog-index-head {
  padding-block: var(--blog-index-top) var(--blog-index-bottom);
}

.blog-index-head h1 {
  margin-block: var(--blog-text-gap);
  color: var(--blog-ink);
  font-family: var(--blog-title-font);
  font-size: var(--blog-index-h1);
  font-weight: var(--blog-display-weight);
  line-height: var(--blog-title-leading);
  letter-spacing: var(--blog-title-tracking);
  overflow-wrap: anywhere;
}

.blog-index-head .hl {
  background: linear-gradient(var(--blog-clear), var(--blog-clear)) no-repeat;
  box-shadow: inset 0 calc(-1 * var(--blog-mark-depth)) var(--blog-mark);
}

.blog-index-lead {
  max-width: 48em;
  margin-block: var(--blog-text-gap) 0;
  color: var(--blog-muted);
  font-size: var(--blog-index-lead);
  line-height: var(--blog-lead-leading);
}

.blog-topic-strip {
  display: flex;
  flex-wrap: wrap;
  gap: var(--blog-small) var(--blog-block-gap);
  margin-top: var(--blog-card-gap);
  color: var(--blog-muted);
  font-size: var(--blog-meta-size);
}

.blog-topic-strip span {
  padding-bottom: var(--blog-small);
  border-bottom: var(--blog-hairline) solid var(--blog-border);
}

.blog-catalog {
  padding-bottom: var(--section-space, 160px);
}

.blog-catalog-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--blog-medium) var(--blog-block-gap);
  margin-bottom: var(--blog-card-gap);
}

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

.blog-catalog-heading p {
  margin: 0;
  font-size: var(--blog-meta-size);
}

.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--blog-small);
  margin-bottom: var(--blog-card-gap);
}

.blog-filters button {
  min-height: var(--blog-close-size);
  padding: var(--blog-small) var(--blog-text-gap);
  border: var(--blog-hairline) solid var(--blog-border);
  border-radius: var(--blog-control-radius);
  background: var(--blog-clear);
  color: var(--blog-link);
  font-family: var(--blog-body-font);
  font-size: var(--size-small, 14px);
  font-weight: var(--blog-bold-weight);
  line-height: var(--blog-small-leading);
  cursor: pointer;
  transition: background var(--blog-modal-duration) var(--blog-modal-ease),
    color var(--blog-modal-duration) var(--blog-modal-ease);
}

.blog-filters button:hover {
  border-color: var(--blog-link);
}

.blog-filters button[aria-pressed="true"] {
  border-color: var(--blog-link);
  background: var(--blog-link);
  color: var(--blog-on-link);
}

.blog-filters button:focus-visible,
.blog-download-close:focus-visible,
.blog-download-dialog a:focus-visible,
.blog-nav-card:focus-visible {
  outline: var(--blog-underline) solid var(--blog-link);
  outline-offset: var(--blog-tight);
  box-shadow: var(--blog-focus);
}

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

.blog-post-card,
.blog-related-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: var(--blog-card-pad);
  border: var(--blog-hairline) solid var(--blog-border);
  border-radius: var(--blog-radius);
  background: var(--blog-panel);
  color: var(--blog-ink);
  box-shadow: var(--blog-shadow);
}

.blog-card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--blog-small) var(--blog-medium);
  margin-bottom: var(--blog-text-gap);
  color: var(--blog-muted);
  font-size: var(--blog-meta-size);
  line-height: var(--blog-small-leading);
}

.blog-card-meta .tag {
  border: var(--blog-hairline) solid var(--blog-border);
  border-radius: var(--blog-control-radius);
  padding: var(--blog-tight) var(--blog-small);
  background: var(--blog-panel);
  color: var(--blog-muted);
  font-size: var(--blog-meta-size);
}

.blog-card-title {
  margin: 0 0 var(--blog-medium);
  font-family: var(--blog-title-font);
  font-size: var(--blog-h3);
  font-weight: var(--blog-display-weight);
  line-height: var(--blog-card-leading);
  letter-spacing: var(--blog-title-tracking);
  overflow-wrap: anywhere;
}

.blog-card-title a,
.blog-read-link {
  color: var(--blog-link);
  font-weight: var(--blog-bold-weight);
  text-decoration-line: underline;
  text-decoration-thickness: var(--blog-underline);
  text-underline-offset: var(--blog-underline-offset);
}

.blog-card-title a:hover,
.blog-read-link:hover {
  color: var(--blog-link-hover);
}

.blog-card-summary {
  margin: 0 0 var(--blog-card-gap);
  color: var(--blog-muted);
  font-size: var(--size-body, 16px);
  line-height: var(--blog-lead-leading);
  overflow-wrap: anywhere;
}

.blog-read-link {
  align-self: flex-start;
  margin-top: auto;
  font-size: var(--size-small, 14px);
}

.blog-empty {
  grid-column: 1 / -1;
  margin: 0;
  padding: var(--blog-card-pad);
  border: var(--blog-hairline) solid var(--blog-border);
  border-radius: var(--blog-radius);
  color: var(--blog-muted);
  line-height: var(--blog-lead-leading);
}

.blog-breadcrumb,
nav.breadcrumb,
nav.breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: var(--blog-small);
  margin-top: var(--blog-trail-top);
  margin-bottom: var(--blog-trail-bottom);
  overflow: hidden;
  white-space: nowrap;
  color: var(--blog-muted);
  font-family: var(--blog-body-font);
  font-size: var(--blog-meta-size);
  line-height: var(--blog-small-leading);
}

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

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

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

.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-current-limit);
  overflow: hidden;
  text-overflow: ellipsis;
}

.trail-nav {
  color: var(--blog-muted);
  font-family: var(--blog-body-font);
  font-size: var(--blog-meta-size);
  line-height: var(--blog-small-leading);
}

.article-head,
.head-col {
  background: var(--blog-clear);
  color: var(--blog-ink);
}

.post-meta {
  color: var(--blog-muted);
  font-family: var(--blog-body-font);
  font-size: var(--blog-meta-size);
  line-height: var(--blog-small-leading);
}

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

.article-lead {
  color: var(--blog-muted);
  font-family: var(--blog-body-font);
  font-size: var(--blog-article-lead);
  line-height: var(--blog-lead-leading);
}

.post-body {
  color: var(--blog-ink);
  font-family: var(--blog-body-font);
  font-size: var(--size-body, 16px);
  font-weight: var(--blog-body-weight);
  line-height: var(--blog-body-leading);
}

.post-body h2 {
  margin-block: var(--blog-section-gap) var(--blog-text-gap);
  color: var(--blog-ink);
  font-family: var(--blog-title-font);
  font-size: var(--blog-h2);
  font-weight: var(--blog-display-weight);
  line-height: var(--blog-title-leading);
  letter-spacing: var(--blog-title-tracking);
  scroll-margin-top: calc(var(--nav-h, 80px) + var(--blog-block-gap));
}

.post-body h3 {
  margin-block: var(--blog-block-gap) var(--blog-medium);
  color: var(--blog-ink);
  font-family: var(--blog-title-font);
  font-size: var(--blog-h3);
  font-weight: var(--blog-bold-weight);
  line-height: var(--blog-card-leading);
  scroll-margin-top: calc(var(--nav-h, 80px) + var(--blog-block-gap));
}

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

.post-body > section,
.post-body section.section {
  margin-block: var(--blog-section-gap) 0;
  padding-block: 0;
}

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

.post-body p,
.post-body ul,
.post-body ol,
.post-body blockquote,
.post-body figure,
.post-body pre,
.post-body .table-scroll {
  margin-block: 0 var(--blog-text-gap);
}

.post-body ul,
.post-body ol {
  padding-inline-start: var(--blog-card-pad);
}

.post-body li + li {
  margin-top: var(--blog-small);
}

.post-body.prose a:not([class*="btn"]):not([class*="button"]),
.post-body a:not([class*="btn"]):not([class*="button"]) {
  color: var(--blog-link);
  font-weight: var(--blog-bold-weight);
  text-decoration-line: underline;
  text-decoration-thickness: var(--blog-underline);
  text-underline-offset: var(--blog-underline-offset);
}

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

.post-body code {
  font-family: var(--blog-code-font);
  font-size: inherit;
  color: var(--blog-ink);
  overflow-wrap: anywhere;
}

.post-body pre {
  max-width: 100%;
  overflow-x: auto;
  padding: var(--blog-text-gap);
  border: var(--blog-hairline) solid var(--blog-border);
  border-radius: var(--blog-radius);
  background: var(--blog-panel);
  color: var(--blog-ink);
  box-shadow: var(--blog-shadow);
  font-family: var(--blog-code-font);
  font-size: var(--size-small, 14px);
  line-height: var(--blog-lead-leading);
  white-space: pre;
}

.post-body pre code {
  white-space: inherit;
  overflow-wrap: normal;
}

.post-body blockquote {
  padding: var(--blog-text-gap) var(--blog-card-gap);
  border-inline-start: var(--blog-underline) solid var(--blog-link);
  color: var(--blog-muted);
}

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

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

.post-body table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
  font-size: var(--size-small, 14px);
}

.post-body th,
.post-body td {
  min-width: 7em;
  padding: var(--blog-medium);
  border: var(--blog-hairline) solid var(--blog-border);
  text-align: start;
  vertical-align: top;
  word-break: normal;
  overflow-wrap: normal;
}

.post-body th {
  background: var(--blog-panel);
  font-weight: var(--blog-bold-weight);
}

.dl-card {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--blog-card-gap);
  margin-block: var(--blog-section-gap);
  padding: var(--blog-card-pad);
  border: var(--blog-hairline) solid var(--blog-border);
  border-radius: var(--blog-radius);
  background: var(--blog-panel);
  color: var(--blog-ink);
  box-shadow: var(--blog-shadow);
}

.dl-card > div {
  flex: 1 1 var(--blog-card-min);
  min-width: 0;
}

.dl-card h2,
.post-body .dl-card h2 {
  margin-block: 0 var(--blog-medium);
  font-family: var(--blog-title-font);
  font-size: var(--blog-h3);
  font-weight: var(--blog-display-weight);
  line-height: var(--blog-title-leading);
}

.dl-card p:last-child {
  margin-bottom: 0;
}

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

.blog-related > h2,
.blog-post-navigation > h2 {
  margin-block: 0 var(--blog-card-gap);
  font-family: var(--blog-title-font);
  font-size: var(--blog-h2);
  font-weight: var(--blog-display-weight);
  line-height: var(--blog-title-leading);
}

#related-posts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, var(--blog-card-min)), 1fr));
  gap: var(--blog-card-gap);
  container-type: inline-size;
}

#related-posts .blog-related-card {
  min-width: 0;
}

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

.blog-nav-card {
  display: flex;
  flex-direction: column;
  gap: var(--blog-medium);
  min-width: 0;
  padding: var(--blog-card-pad);
  border: var(--blog-hairline) solid var(--blog-border);
  border-radius: var(--blog-radius);
  background: var(--blog-panel);
  color: var(--blog-link);
  box-shadow: var(--blog-shadow);
  font-weight: var(--blog-bold-weight);
  text-decoration-line: underline;
  text-decoration-thickness: var(--blog-underline);
  text-underline-offset: var(--blog-underline-offset);
}

.blog-nav-card--previous {
  grid-column: 1;
}

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

.blog-nav-card:hover {
  border-color: var(--blog-link);
  color: var(--blog-link-hover);
}

.blog-nav-label,
.blog-nav-date {
  font-size: var(--blog-meta-size);
  line-height: var(--blog-small-leading);
}

.blog-nav-date {
  color: var(--blog-muted);
  font-weight: var(--blog-body-weight);
}

.blog-nav-title {
  font-size: var(--size-body, 16px);
  line-height: var(--blog-card-leading);
  overflow-wrap: anywhere;
}

body.blog-dialog-open {
  overflow: hidden;
}

.blog-download-dialog {
  position: fixed;
  inset: 0;
  width: min(var(--blog-modal-width), calc(100% - var(--blog-modal-edge) * 2));
  max-width: calc(100% - var(--blog-modal-edge) * 2);
  max-height: calc(100% - var(--blog-modal-edge) * 2);
  margin: auto;
  padding: 0;
  overflow: auto;
  border: var(--blog-hairline) solid var(--blog-border);
  border-radius: var(--blog-radius);
  background: var(--blog-panel);
  color: var(--blog-ink);
  box-shadow: var(--blog-shadow);
  font-family: var(--blog-body-font);
  z-index: var(--blog-layer);
}

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

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

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

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

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

.blog-download-panel {
  position: relative;
  padding: var(--blog-modal-pad);
}

.blog-download-close {
  position: absolute;
  top: var(--blog-small);
  right: var(--blog-small);
  display: grid;
  place-items: center;
  width: var(--blog-close-size);
  height: var(--blog-close-size);
  padding: 0;
  border: var(--blog-hairline) solid var(--blog-clear);
  border-radius: var(--blog-control-radius);
  background: var(--blog-panel);
  color: var(--blog-ink);
  font-family: var(--blog-body-font);
  font-size: var(--blog-h2);
  font-weight: var(--blog-ui-weight);
  line-height: var(--blog-title-leading);
  cursor: pointer;
}

.blog-download-close:hover {
  border-color: var(--blog-border);
  background: var(--blog-cell);
  color: var(--blog-link);
}

.blog-download-brand {
  margin: 0 0 var(--blog-card-gap);
  padding-right: var(--blog-card-gap);
  color: var(--blog-muted);
  font-size: var(--blog-meta-size);
  font-weight: var(--blog-ui-weight);
  line-height: var(--blog-small-leading);
}

.blog-download-title {
  margin: 0 0 var(--blog-text-gap);
  color: var(--blog-ink);
  font-family: var(--blog-title-font);
  font-size: var(--blog-h2);
  font-weight: var(--blog-display-weight);
  line-height: var(--blog-title-leading);
  letter-spacing: var(--blog-title-tracking);
}

.blog-download-copy {
  margin: 0 0 var(--blog-card-gap);
  color: var(--blog-ink);
  font-size: var(--size-body, 16px);
  line-height: var(--blog-lead-leading);
}

.blog-download-note {
  margin: var(--blog-text-gap) 0 0;
  color: var(--blog-muted);
  font-size: var(--blog-meta-size);
  line-height: var(--blog-small-leading);
}

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

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

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

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

@media (max-width: 700px) {
  :root {
    --blog-index-top: 36px;
    --blog-index-h1: clamp(26px, 5vw, 30px);
    --blog-article-h1: 1.5rem;
    --blog-card-pad: 20px;
    --blog-modal-pad: 28px;
  }

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

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

  .blog-nav-card--previous,
  .blog-nav-card--next {
    grid-column: 1;
  }

  .blog-download-panel {
    padding-top: calc(var(--blog-modal-pad) + var(--blog-text-gap));
  }
}

@media (prefers-reduced-motion: reduce) {
  .blog-filters button {
    transition: none;
  }

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

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

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

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

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

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

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

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

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

@media (max-width: 720px) {
  .seg-stats, .seg-stats[data-cols="4"] { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .seg-config, .seg-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; }
.head-col { max-width: 620px; margin-inline: auto; padding-inline: clamp(16px, 4vw, 24px); }
.post-meta { 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); }
.article-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: 620px; margin-inline: auto; padding-inline: clamp(16px, 4vw, 24px); padding-block: 0.25rem 3rem; }
.post-body > h2:first-of-type { margin-top: 0; }