/* 能达批注：文章阅读列与通栏纸色带 */
:root {
  --blog-column: 56rem;
  --blog-ink: var(--chrome, var(--text));
}

.blog-index,
.article-page {
  overflow-x: clip;
}

.reading-wrap,
.article-hero > .reading-wrap {
  box-sizing: border-box;
  width: 100%;
  max-width: calc(var(--blog-column) + 2 * var(--gutter));
  padding-inline: var(--gutter);
  margin-inline: auto;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .55rem;
  padding-top: 1.5rem;
  padding-bottom: 1.25rem;
  color: var(--muted);
  font-size: .88rem;
}

.breadcrumb a {
  color: var(--text);
  text-decoration-color: var(--border);
  text-underline-offset: .2em;
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: var(--accent);
}

.article-hero {
  box-sizing: border-box;
  width: 100vw;
  margin-left: calc(50% - 50vw);
  padding-block: clamp(2.25rem, 5vw, 4rem);
  padding-inline: 1.5rem;
  border-block: 1px solid var(--border);
  background-color: var(--panel-2);
  background-image: radial-gradient(
    color-mix(in srgb, var(--accent) 9%, transparent) 1px,
    transparent 1px
  );
  background-size: 1.3rem 1.3rem;
}

.article-hero > .reading-wrap {
  padding-inline: var(--gutter);
}

.article-hero h1,
.blog-list-hero h1,
.article-card h3,
.related-card h3,
.prose h2,
.prose h3 {
  text-wrap: pretty;
  letter-spacing: -.015em;
}

.article-hero h1,
.blog-list-hero h1 {
  max-width: 18em;
  margin: .8rem 0 .9rem;
  color: var(--text);
  font-family: var(--f-display);
  font-weight: 900;
  line-height: 1.2;
}

.article-hero h1 {
  font-size: clamp(1.9rem, 4vw, 2.6rem);
}

.blog-list-hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
}

.article-hero p {
  max-width: 46rem;
  margin: 0;
  color: var(--textMuted, var(--muted));
  line-height: 1.75;
}

.article-hero .hero-overline {
  color: var(--accent);
  font-family: var(--f-mono);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .06em;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-start;
  gap: .35rem .55rem;
  color: var(--muted);
  font-size: .86rem;
}

.article-meta .article-category {
  color: var(--accent-dark);
  font-weight: 700;
}

.blog-catalog {
  padding-block: 2.75rem 4rem;
}

.blog-catalog > h2,
#related-posts > h2 {
  margin: 0 0 1.25rem;
  font-family: var(--f-display);
  font-size: clamp(1.4rem, 3vw, 1.8rem);
  color: var(--text);
}

.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
  margin-bottom: 1.7rem;
}

.blog-filters button {
  cursor: pointer;
  padding: .55rem .9rem;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  background: var(--panel);
  color: var(--text);
  font: inherit;
  font-size: .88rem;
  transition: border-color .2s ease, background-color .2s ease, color .2s ease;
}

.blog-filters button:hover,
.blog-filters button:focus-visible {
  border-color: var(--accent);
}

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

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

.article-card,
.related-card,
.post-nav-card {
  position: relative;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--panel);
  box-shadow: inset 0 1px var(--hi), 0 12px 32px var(--accent-halo);
  transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}

.article-card:hover,
.article-card:focus-within,
.related-card:hover,
.related-card:focus-within,
.post-nav-card:hover,
.post-nav-card:focus-visible {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: inset 0 1px var(--hi), 0 16px 36px var(--accent-shadow);
}

.article-card {
  display: flex;
  flex-direction: column;
  padding: 1.35rem;
}

.article-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  color: var(--muted);
  font-family: var(--f-mono);
  font-size: .76rem;
}

.article-card-meta .article-category,
.related-label {
  color: var(--accent-dark);
  font-family: var(--f-body);
  font-weight: 700;
}

.article-card h3,
.related-card h3 {
  margin: .85rem 0 .6rem;
  font-size: 1.17rem;
  line-height: 1.5;
}

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

.article-card h3 a::after,
.related-card h3 a::after {
  position: absolute;
  inset: 0;
  content: "";
}

.article-card p,
.related-card p {
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-size: .91rem;
  line-height: 1.75;
}

.article-read-link {
  align-self: flex-start;
  margin-top: auto;
  color: var(--accent-dark);
  font-size: .87rem;
  font-weight: 700;
  text-decoration: none;
}

.article-card:focus-within,
.related-card:focus-within {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.blog-empty {
  padding: 1.5rem;
  border-radius: var(--r-sm);
  background: var(--panel);
  color: var(--muted);
}

/* 正文：编号标题、资料面板与墨版代码 */
.prose {
  counter-reset: blog-section;
  padding-block: 2rem 1rem;
  color: var(--text);
  font-size: 1rem;
  line-height: 1.85;
  overflow-wrap: break-word;
}

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

.prose h2,
.prose h3 {
  display: block;
  color: var(--text);
  font-family: var(--f-display);
  line-height: 1.4;
}

.prose h2 {
  counter-increment: blog-section;
  margin: 2.5rem 0 .85rem;
  font-size: clamp(1.3rem, 2.5vw, 1.6rem);
}

.prose h2::before {
  display: inline-block;
  margin-right: .65em;
  color: var(--accent);
  content: counter(blog-section, decimal-leading-zero) " /";
  font-family: var(--f-mono);
  font-size: .68em;
  vertical-align: .12em;
}

.prose h3 {
  margin: 1.8rem 0 .65rem;
  font-size: clamp(1.12rem, 2vw, 1.3rem);
}

.prose p,
.prose ul,
.prose ol,
.prose blockquote {
  margin-block: 0 1.15rem;
}

.prose a {
  color: var(--accent-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: .2em;
}

.prose li {
  margin-block: .45rem;
}

.prose blockquote {
  padding: .85rem 1.3rem;
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--r-xs) var(--r-xs) 0;
  background: var(--panel);
  color: var(--muted);
}

.prose .table-scroll {
  max-width: 100%;
  margin-block: 1.5rem;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: .9rem;
  line-height: 1.6;
}

.prose th,
.prose td {
  padding: .78rem .95rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.prose thead {
  background: var(--blog-ink);
  color: var(--panel);
}

.prose tbody tr:nth-child(even) {
  background: var(--panel);
}

.prose tbody tr:hover {
  background: var(--accent-soft);
}

.prose tbody tr:last-child > * {
  border-bottom: 0;
}

.prose pre {
  position: relative;
  max-width: 100%;
  margin-block: 1.5rem;
  padding: 2.6rem 1.25rem 1.2rem;
  overflow-x: auto;
  border-radius: var(--r-sm);
  background: var(--blog-ink);
  color: var(--cream);
  font-family: var(--f-mono);
  font-size: .87rem;
  line-height: 1.7;
}

.prose pre::before {
  position: absolute;
  top: .85rem;
  left: 1.2rem;
  color: var(--accent);
  content: "●  ●  ●";
  font-size: .72rem;
  letter-spacing: .12em;
}

.prose pre code {
  padding: 0;
  background: transparent;
  color: inherit;
}

.prose :not(pre) > code {
  padding: .12em .33em;
  border-radius: var(--r-xs);
  background: var(--accent-soft);
  font-family: var(--f-mono);
  font-size: .88em;
}

.prose .callout {
  position: relative;
  margin-block: 1.5rem;
  padding: 1rem 1.15rem 1rem 3.1rem;
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: var(--accent-soft);
}

.prose .callout::before {
  position: absolute;
  top: 1rem;
  left: .95rem;
  display: grid;
  width: 1.35rem;
  height: 1.35rem;
  place-items: center;
  border-radius: var(--r-xs);
  background: var(--accent);
  color: var(--panel);
  content: "i";
  font-family: var(--f-mono);
  font-size: .8rem;
  font-weight: 700;
}

.prose .callout.warning {
  border-color: var(--warn);
  background: color-mix(in srgb, var(--warn) 12%, var(--panel));
}

.prose .callout.warning::before {
  background: var(--warn);
  color: var(--text);
  content: "!";
}

.prose .callout.success {
  border-color: var(--success);
  background: color-mix(in srgb, var(--success) 12%, var(--panel));
}

.prose .callout.success::before {
  background: var(--success);
  content: "✓";
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 11rem), 1fr));
  gap: .8rem;
  margin-block: 1.5rem;
}

.stat-card {
  display: flex;
  flex-direction: column;
  gap: .35rem;
  padding: 1.1rem;
  border-top: 3px solid var(--accent);
  border-radius: var(--r-sm);
  background: var(--accent-soft);
}

.stat-card:nth-child(even) {
  border-top-color: var(--text);
  background: var(--panel-2);
}

.stat-num {
  color: var(--text);
  font-family: var(--f-mono);
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  font-weight: 700;
  line-height: 1.25;
}

.stat-label {
  color: var(--muted);
  font-size: .85rem;
  line-height: 1.55;
}

.check-list {
  margin-block: 1.5rem;
  padding: 0;
  list-style: none;
}

.check-list li {
  margin: .55rem 0;
  padding: .7rem .95rem;
  border: 1px solid var(--border);
  border-radius: var(--r-xs);
  background: var(--panel);
  list-style: none;
}

.verdict {
  margin-block: 1.5rem;
  padding: 1rem 1.2rem;
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--r-xs) var(--r-xs) 0;
  background: var(--panel-2);
}

.verdict strong:first-child {
  color: var(--accent-dark);
}

.prose .faq-item {
  margin-block: .65rem;
  padding: .8rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--panel);
}

.prose .faq-item summary {
  cursor: pointer;
  font-weight: 700;
}

.prose .faq-item > div {
  padding-top: .8rem;
}

/* 文末唯一推广块与动态关联内容 */
.promo-block {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  margin-block: 2rem 1.5rem;
  padding: clamp(1.5rem, 4vw, 2.25rem);
  overflow: hidden;
  border: 1px solid var(--accent-dark);
  border-radius: var(--r-md);
  background: linear-gradient(125deg, var(--accent), var(--accent-dark));
  box-shadow: 0 18px 38px var(--accent-shadow);
  color: var(--panel);
}

.promo-block::after {
  position: absolute;
  right: 1rem;
  bottom: -2rem;
  width: 8rem;
  height: 8rem;
  border: 2px solid color-mix(in srgb, var(--panel) 35%, transparent);
  border-radius: 50%;
  content: "";
  pointer-events: none;
}

.promo-block > * {
  position: relative;
  z-index: 1;
}

.promo-block h2 {
  margin: 0 0 .35rem;
  color: var(--panel);
  font-family: var(--f-display);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
}

.promo-block p {
  margin: 0;
  color: var(--panel);
  line-height: 1.65;
}

.promo-block .btn-primary {
  flex: none;
  border-color: var(--panel);
  background: var(--panel);
  color: var(--accent-dark);
}

.promo-block .btn-soft {
  border-color: var(--panel);
  background: transparent;
  color: var(--panel);
}

#related-posts {
  padding-block: 1.25rem 0;
}

.related-card {
  padding: 1.2rem;
}

.related-label {
  font-size: .78rem;
}

.related-card h3 {
  font-size: 1.05rem;
}

.related-card p {
  margin-bottom: 0;
  font-size: .86rem;
}

#post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  padding-block: 1.5rem 2.5rem;
}

.post-nav-card {
  display: flex;
  flex-direction: column;
  gap: .55rem;
  padding: 1.15rem;
  color: var(--text);
  text-decoration: none;
}

.post-nav-card > span {
  color: var(--accent-dark);
  font-size: .78rem;
  font-weight: 700;
}

.post-nav-card strong {
  font-size: .95rem;
  line-height: 1.55;
}

/* 搜索落地文章可使用；列表页不输出此组件 */
.float-cta {
  position: fixed;
  z-index: 20;
  right: max(1rem, var(--gutter));
  bottom: 1.25rem;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  max-width: calc(100vw - 2rem);
  padding: .75rem 1.1rem;
  border-radius: var(--r-pill);
  background: var(--accent);
  box-shadow: 0 10px 28px var(--accent-shadow-strong);
  color: var(--panel);
  font-size: .88rem;
  font-weight: 700;
  text-decoration: none;
}

.float-cta svg {
  width: 1.1rem;
  height: 1.1rem;
  flex: none;
}

.float-cta:hover,
.float-cta:focus-visible {
  background: var(--accent-dark);
}

/* 文章文末触发的单次注册引导 */
body.blog-modal-open {
  overflow: hidden;
}

.blog-modal-backdrop {
  position: fixed;
  z-index: 100;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 1.25rem;
  background: color-mix(in srgb, var(--text) 72%, transparent);
  opacity: 0;
  transition: opacity .2s ease;
}

.blog-modal-backdrop.is-visible {
  opacity: 1;
}

.blog-modal {
  position: relative;
  box-sizing: border-box;
  width: min(100%, 27rem);
  padding: 2.1rem;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--panel);
  box-shadow: 0 24px 64px var(--umber-shadow);
  color: var(--text);
  transform: translateY(.6rem);
  transition: transform .2s ease;
}

.blog-modal-backdrop.is-visible .blog-modal {
  transform: translateY(0);
}

.blog-modal-close {
  position: absolute;
  top: .7rem;
  right: .75rem;
  display: grid;
  width: 2.2rem;
  height: 2.2rem;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
  font: inherit;
  font-size: 1.4rem;
}

.blog-modal-close:hover,
.blog-modal-close:focus-visible {
  border-color: var(--accent);
  color: var(--accent-dark);
}

.blog-modal-eyebrow {
  margin: 0;
  color: var(--accent-dark);
  font-family: var(--f-mono);
  font-size: .85rem;
  font-weight: 700;
}

.blog-modal h2 {
  margin: .6rem 0;
  font-family: var(--f-display);
  font-size: 1.6rem;
  line-height: 1.3;
}

.blog-modal p:not(.blog-modal-eyebrow) {
  margin: 0 0 1.4rem;
  color: var(--muted);
  line-height: 1.75;
}

@media (max-width: 860px) {
  .prose table:not(.table-scroll table) {
    display: block;
    width: fit-content;
    max-width: 100%;
    overflow-x: auto;
    white-space: nowrap;
  }

  .prose .table-scroll table {
    min-width: 38rem;
  }
}

@media (max-width: 640px) {
  .article-grid,
  .related-grid,
  #post-nav {
    grid-template-columns: 1fr;
  }

  .article-hero {
    padding-inline: 1.5rem;
  }

  .promo-block {
    align-items: flex-start;
    flex-direction: column;
  }

  .float-cta {
    right: 1rem;
    bottom: max(1rem, env(safe-area-inset-bottom));
  }

  .article-page:has(.float-cta) #post-nav {
    padding-bottom: 5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .blog-filters button,
  .article-card,
  .related-card,
  .post-nav-card,
  .blog-modal-backdrop,
  .blog-modal,
  .float-cta {
    transition: none;
  }

  .article-card:hover,
  .article-card:focus-within,
  .related-card:hover,
  .related-card:focus-within,
  .post-nav-card:hover,
  .post-nav-card:focus-visible,
  .blog-modal {
    transform: none;
  }
}