/* 博客的窗口栏、阅读列与文章组件；颜色和字体沿用站点令牌。 */
.blog-index {
  padding-bottom: clamp(3rem, 7vw, 6rem);
}

.blog-breadcrumb {
  width: min(100%, calc(56rem + 2 * var(--gutter)));
  margin: 1.5rem auto 1.25rem;
  padding-inline: var(--gutter);
  color: var(--muted);
  font-size: .875rem;
  line-height: 1.6;
}

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

.blog-breadcrumb span {
  margin-inline: .55rem;
}

.blog-breadcrumb span:last-child {
  margin-inline-end: 0;
}

.blog-hero,
.article-hero {
  width: min(100%, calc(56rem + 2 * var(--gutter)));
  margin-inline: auto;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--r-win);
  background: var(--panel);
  box-shadow: var(--shadow-10), inset 0 1px var(--hi);
}

.blog-hero-chrome,
.article-hero-chrome {
  position: relative;
  min-height: 2.75rem;
  padding: .72rem 1.5rem .65rem 5.4rem;
  border-bottom: 1px solid var(--border-soft);
  color: var(--muted);
  font: .75rem/1.4 var(--font-mono);
  text-align: right;
}

.blog-hero-chrome::before,
.article-hero-chrome::before {
  position: absolute;
  top: 1.12rem;
  left: 1.6rem;
  width: .56rem;
  height: .56rem;
  border-radius: var(--r-pill);
  background: var(--lavender);
  box-shadow: 1rem 0 var(--lavender-line), 2rem 0 var(--accent-tint);
  content: "";
}

.blog-hero-content,
.article-hero-content {
  padding: clamp(1.6rem, 4vw, 3rem);
}

.blog-eyebrow,
.article-hero-kicker {
  margin: 0 0 1rem;
  color: var(--accent-dark);
  font: 700 .78rem/1.5 var(--font-mono);
  letter-spacing: .08em;
}

.blog-hero h1,
.article-hero h1 {
  margin: 0;
  color: var(--text);
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.24;
  text-wrap: pretty;
  overflow-wrap: anywhere;
}

.blog-hero h1 {
  font-size: clamp(2rem, 4.6vw, 3rem);
}

.article-hero h1 {
  font-size: clamp(1.85rem, 4vw, 2.6rem);
}

.blog-hero-content > p:last-child,
.article-hero-content > p:last-child {
  max-width: 46rem;
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
}

.blog-catalog {
  max-width: 75rem;
  margin: clamp(2.5rem, 5vw, 4rem) auto 0;
}

.blog-catalog-heading h2,
#related-posts > h2 {
  margin: 0 0 .45rem;
  font-size: clamp(1.35rem, 2.5vw, 1.6rem);
  letter-spacing: -.01em;
  text-wrap: pretty;
}

.blog-catalog-heading p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-top: 1.5rem;
}

.blog-filters button {
  padding: .55rem .85rem;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--panel);
  color: var(--text);
  font: 600 .88rem/1.4 var(--font-body);
  cursor: pointer;
}

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

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

.blog-filter-status {
  min-height: 1.5rem;
  margin: 1.1rem 0 .8rem;
  color: var(--muted);
  font-size: .82rem;
}

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

.blog-article-grid .article-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: clamp(1.25rem, 3vw, 1.8rem);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  background: var(--panel);
  box-shadow: var(--shadow-10), inset 0 1px var(--hi);
  transition: border-color .2s ease, transform .2s ease;
}

.blog-article-grid .article-card:hover,
.blog-article-grid .article-card:focus-within {
  border-color: var(--accent);
  transform: translateY(-3px);
}

.article-meta,
.article-hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-start;
  gap: .5rem;
  color: var(--muted);
  font: .78rem/1.6 var(--font-mono);
}

.article-tag {
  display: inline-block;
  padding: .2rem .55rem;
  border-radius: var(--r-xs);
  background: var(--accent-dark);
  color: var(--white);
  font: 600 .78rem/1.5 var(--font-body);
}

.article-hero-meta time,
.article-hero-meta .read-time {
  display: inline-block;
  padding: .2rem .55rem;
  border: 1px solid var(--border);
  border-radius: var(--r-xs);
}

.article-card h3 {
  margin: 1.15rem 0 .6rem;
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  line-height: 1.45;
  letter-spacing: -.01em;
  text-wrap: pretty;
  overflow-wrap: anywhere;
}

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

.article-card h3 a:hover,
.article-card h3 a:focus-visible,
.article-read-link:hover {
  color: var(--accent-dark);
}

.article-card > p {
  margin: 0 0 1.4rem;
  color: var(--muted);
  line-height: 1.75;
}

.article-read-link {
  margin-top: auto;
  color: var(--text);
  font-size: .88rem;
  font-weight: 700;
  text-underline-offset: .25em;
}

.blog-empty {
  grid-column: 1 / -1;
  padding: 2rem;
  border: 1px dashed var(--border);
  border-radius: var(--r-sm);
  color: var(--muted);
}

.blog-index-note {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  max-width: 75rem;
  margin: 2rem auto 0;
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  background: var(--panel-2);
}

.blog-index-note strong {
  color: var(--text);
}

.blog-index-note p {
  margin: .4rem 0 0;
  color: var(--muted);
  line-height: 1.7;
}

/* 文章页：面包屑、窗口、正文与文末组件共享一条阅读列。 */
.article-page .blog-breadcrumb,
.article-page .article-hero,
.article-page .reading-wrap,
.article-page .article-end {
  box-sizing: border-box;
  width: 100%;
  max-width: calc(56rem + 2 * var(--gutter));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.article-page .blog-breadcrumb {
  margin-top: 1.5rem;
  margin-bottom: 1.25rem;
}

.article-page .article-hero {
  padding: 0;
}

.article-page .article-hero-content {
  padding-inline: max(1.5rem, var(--gutter));
}

.article-page .reading-wrap {
  margin-top: 1.5rem;
  color: var(--text);
  font-size: 1rem;
  line-height: 1.85;
  overflow-wrap: break-word;
}

.reading-wrap.prose h2,
.prose h2 {
  position: relative;
  margin: 2.6rem 0 .9rem;
  color: var(--text);
  font-size: clamp(1.3rem, 2.5vw, 1.6rem);
  line-height: 1.4;
  letter-spacing: -.01em;
  text-wrap: pretty;
}

.prose {
  counter-reset: article-section;
}

.prose h2::before {
  counter-increment: article-section;
  content: counter(article-section, decimal-leading-zero) " / ";
  color: var(--accent-dark);
  font: 700 .75rem/1 var(--font-mono);
  vertical-align: middle;
}

.prose h3 {
  margin: 1.8rem 0 .65rem;
  font-size: clamp(1.12rem, 2vw, 1.3rem);
  line-height: 1.45;
  letter-spacing: -.01em;
  text-wrap: pretty;
}

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

.prose p,
.prose ul,
.prose ol {
  margin: 0 0 1.35rem;
}

.prose ul,
.prose ol {
  padding-inline-start: 1.5rem;
}

.prose li + li {
  margin-top: .4rem;
}

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

.prose strong {
  color: var(--text);
}

.prose .table-scroll {
  width: 100%;
  max-width: 100%;
  margin: 1.5rem 0;
  overflow-x: auto;
}

.prose table,
.prose .data-table {
  width: 100%;
  min-width: 36rem;
  border-collapse: separate;
  border-spacing: 0;
  font-size: .9rem;
  line-height: 1.6;
}

.prose th,
.prose td {
  padding: .8rem 1rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.prose th {
  background: var(--ink);
  color: var(--on-ink);
  font-weight: 700;
}

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

.prose tbody tr:nth-child(even) {
  background: var(--panel-2);
}

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

.prose pre {
  position: relative;
  max-width: 100%;
  margin: 1.5rem 0;
  padding: 2.9rem 1.35rem 1.3rem;
  overflow-x: auto;
  border: 1px solid var(--ink-edge);
  border-radius: var(--r-sm);
  background: var(--ink);
  color: var(--on-ink);
  font: .85rem/1.75 var(--font-mono);
  tab-size: 2;
}

.prose pre::before {
  position: absolute;
  top: .95rem;
  left: 1.3rem;
  width: .5rem;
  height: .5rem;
  border-radius: var(--r-pill);
  background: var(--lavender);
  box-shadow: .85rem 0 var(--lavender-line), 1.7rem 0 var(--accent-tint);
  content: "";
}

.prose pre code {
  color: inherit;
  font: inherit;
}

.prose :not(pre) > code {
  padding: .12em .3em;
  border-radius: var(--r-xs);
  background: var(--lavender-soft);
  font-family: var(--font-mono);
  font-size: .88em;
}

.prose blockquote,
.prose .callout {
  position: relative;
  margin: 1.6rem 0;
  padding: 1.15rem 1.35rem 1.15rem 3.2rem;
  border-left: .25rem solid var(--accent);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: var(--lavender-soft);
  color: var(--text);
}

.prose blockquote::before,
.prose .callout::before {
  position: absolute;
  top: 1.15rem;
  left: 1.1rem;
  content: "i";
  display: inline-grid;
  width: 1.25rem;
  height: 1.25rem;
  place-items: center;
  border-radius: var(--r-pill);
  background: var(--accent-dark);
  color: var(--white);
  font: 700 .8rem/1 var(--font-mono);
}

.prose blockquote p:last-child,
.prose .callout p:last-child {
  margin-bottom: 0;
}

.prose .callout.warning {
  border-left-color: var(--warn);
  background: color-mix(in srgb, var(--warn) 10%, var(--panel));
}

.prose .callout.warning::before {
  background: var(--warn);
}

.prose .callout.success {
  border-left-color: var(--success);
  background: color-mix(in srgb, var(--success) 10%, var(--panel));
}

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

.prose .stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 12rem), 1fr));
  gap: .8rem;
  margin: 1.5rem 0;
}

.prose .stat-card {
  position: relative;
  min-width: 0;
  padding: 1.2rem;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--lavender-soft);
  overflow: hidden;
}

.prose .stat-card::before {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: .2rem;
  background: var(--accent);
  content: "";
}

.prose .stat-card:nth-child(even) {
  background: color-mix(in srgb, var(--success) 9%, var(--panel));
}

.prose .stat-card:nth-child(even)::before {
  background: var(--success);
}

.prose .stat-num {
  display: block;
  color: var(--text);
  font: 800 clamp(1.4rem, 3vw, 2rem)/1.2 var(--font-display);
  overflow-wrap: anywhere;
}

.prose .stat-label {
  display: block;
  margin-top: .45rem;
  color: var(--muted);
  font-size: .875rem;
  line-height: 1.6;
}

.prose .check-list {
  margin: 1.5rem 0;
  padding: .4rem;
  list-style: none;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--panel-2);
}

.prose .check-list li {
  margin: .4rem 0;
  padding: .75rem 1rem;
  list-style: none;
  border: 1px solid var(--border-soft);
  border-radius: var(--r-xs);
  background: var(--panel);
}

.prose .verdict {
  margin: 1.6rem 0;
  padding: 1rem 1.25rem;
  border-left: .25rem solid var(--accent);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: var(--panel-2);
}

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

.article-page .article-end {
  padding-bottom: 3rem;
}

.promo-block {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  margin: 2.25rem 0 0;
  padding: clamp(1.5rem, 4vw, 2.25rem);
  overflow: hidden;
  border: 1px solid var(--ink-edge);
  border-radius: var(--r-card);
  background: var(--ink);
  color: var(--on-ink);
  box-shadow: var(--shadow-ink);
}

.promo-block::before {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 4rem;
  height: 4rem;
  border: 1px solid var(--ink-hi);
  border-radius: var(--r-pill);
  content: "";
  pointer-events: none;
}

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

.promo-block strong {
  color: var(--on-ink);
  font: 800 1.45rem/1.3 var(--font-display);
}

.promo-block p {
  max-width: 34rem;
  margin: .45rem 0 0;
  color: var(--on-ink);
  line-height: 1.75;
}

.promo-block .btn-solid {
  flex-shrink: 0;
  border: 1px solid var(--white);
  border-radius: var(--r-xs);
  background: var(--white);
  color: var(--ink);
  box-shadow: none;
}

.promo-block .btn-solid:hover,
.promo-block .btn-solid:focus-visible {
  background: var(--panel-2);
}

#related-posts {
  padding-top: 2.5rem;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .75rem;
  margin-top: 1rem;
}

.related-card,
.post-nav-card {
  display: block;
  min-width: 0;
  padding: 1.15rem;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--panel);
  color: var(--text);
  text-decoration: none;
  box-shadow: var(--shadow-10);
  transition: border-color .2s ease, transform .2s ease;
}

.related-card:hover,
.related-card:focus-visible,
.post-nav-card:hover,
.post-nav-card:focus-visible {
  border-color: var(--accent);
  transform: translateY(-3px);
}

.related-meta,
.related-summary,
.post-nav-card > span {
  display: block;
  color: var(--muted);
  font-size: .8rem;
  line-height: 1.6;
}

.related-card strong,
.post-nav-card strong {
  display: block;
  margin-top: .5rem;
  font-size: .95rem;
  line-height: 1.55;
  overflow-wrap: anywhere;
}

.related-summary {
  margin-top: .55rem;
}

#post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .75rem;
  padding-top: 1.5rem;
  padding-bottom: 1rem;
}

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

/* 搜索落地文章使用；博客列表不渲染悬浮入口。 */
.float-cta {
  position: fixed;
  z-index: 30;
  right: max(1rem, var(--gutter));
  bottom: 1.25rem;
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: .7rem 1rem;
  border: 1px solid var(--text);
  border-radius: var(--r-pill);
  background: var(--text);
  color: var(--white);
  font-size: .875rem;
  font-weight: 700;
  text-decoration: none;
}

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

.float-cta svg {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}

.signup-overlay {
  position: fixed;
  z-index: 1000;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 1rem;
  background: color-mix(in srgb, var(--ink) 65%, transparent);
  opacity: 0;
  transition: opacity .18s ease;
}

.signup-overlay.is-open {
  opacity: 1;
}

.signup-dialog {
  position: relative;
  width: min(100%, 28rem);
  padding: 2.2rem;
  border: 1px solid var(--border);
  border-radius: var(--r-win);
  background: var(--panel);
  color: var(--text);
  box-shadow: var(--shadow-18);
  transform: translateY(.5rem);
  transition: transform .18s ease;
}

.signup-overlay.is-open .signup-dialog {
  transform: translateY(0);
}

.signup-dialog-close {
  position: absolute;
  top: .65rem;
  right: .7rem;
  display: grid;
  width: 2.25rem;
  height: 2.25rem;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: var(--r-xs);
  background: var(--panel);
  color: var(--text);
  font: 1.4rem/1 var(--font-body);
  cursor: pointer;
}

.signup-dialog-close:hover,
.signup-dialog-close:focus-visible {
  border-color: var(--accent);
}

.signup-dialog-kicker {
  color: var(--accent-dark);
  font: 700 .8rem/1.5 var(--font-mono);
}

.signup-dialog h2 {
  margin: .6rem 0 .8rem;
  font-size: clamp(1.35rem, 4vw, 1.8rem);
  line-height: 1.35;
  text-wrap: pretty;
}

.signup-dialog p {
  margin: 0 0 1.5rem;
  color: var(--muted);
  line-height: 1.75;
}

.signup-dialog .btn-solid {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--r-xs);
  box-shadow: none;
}

@media (max-width: 860px) {
  .prose table,
  .prose .data-table {
    display: block;
    width: fit-content;
    max-width: 100%;
    overflow-x: auto;
    white-space: nowrap;
  }
}

@media (max-width: 640px) {
  .blog-article-grid,
  .related-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .blog-hero-content,
  .article-page .article-hero-content {
    padding: 1.5rem;
  }

  .blog-index-note,
  .promo-block {
    align-items: flex-start;
    flex-direction: column;
  }

  .promo-block .btn-solid {
    align-self: flex-start;
  }

  .float-cta {
    right: 1rem;
    bottom: max(1rem, env(safe-area-inset-bottom));
    max-width: calc(100vw - 2rem);
  }

  .article-page .article-end {
    padding-bottom: 5rem;
  }

  .signup-dialog {
    padding: 1.65rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .blog-article-grid .article-card,
  .related-card,
  .post-nav-card,
  .signup-overlay,
  .signup-dialog {
    transition: none;
  }
}