:root {
  --blog-column: 56rem;
  --blog-terminal: #131A2A;
  --blog-terminal-text: #F8FAFE;
  --blog-hero-glow: rgba(255, 255, 255, .8);
  --blog-window-mark: #E24A1C;
  --blog-window-warn: #B8761A;
  --blog-window-ready: #1E8A5A;
}

.blog-index,
.blog-article {
  color: var(--c-text);
  background: var(--c-bg);
  min-width: 0;
}

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

.blog-article > .blog-breadcrumb {
  max-width: 780px;
  padding-inline: 0;
}

.blog-article > .article-hero {
  width: min(100%, calc(780px + 2 * (var(--gutter) + clamp(1.5rem, 4vw, 2.5rem) + 1px)));
  max-width: none;
}

@media (max-width: 926px) {
  .blog-article > .blog-breadcrumb,
  .blog-article > .reading-wrap {
    width: 100%;
    max-width: none;
    padding-inline: calc(var(--gutter) + clamp(1.5rem, 4vw, 2.5rem) + 1px);
  }
}

.blog-breadcrumb {
  padding-top: 1.5rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .65rem;
  color: var(--c-muted);
  font-size: .875rem;
}

.blog-index__inner > .blog-breadcrumb {
  width: 100%;
  padding-inline: 0;
}

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

.blog-breadcrumb a:hover {
  color: var(--c-accent-dark);
}

.blog-index__hero {
  padding-block: clamp(2.5rem, 6vw, 5rem) clamp(2rem, 4vw, 3.5rem);
  border-bottom: 1px solid var(--c-border);
}

.blog-eyebrow {
  display: inline-block;
  margin-bottom: 1rem;
  font: 500 .8rem var(--f-mono);
  letter-spacing: .09em;
  color: var(--c-accent-dark);
}

.blog-index__hero h1 {
  max-width: 18ch;
  margin: 0 0 1rem;
  font: 500 clamp(2rem, 5vw, 3rem)/1.28 var(--f-display);
  letter-spacing: -.02em;
  text-wrap: pretty;
  overflow-wrap: anywhere;
}

.blog-index__hero p {
  max-width: 40rem;
  margin: 0;
  color: var(--c-muted);
  font: 1.0625rem/1.8 var(--f-body);
}

.blog-catalog {
  padding-block: clamp(2.5rem, 5vw, 4rem) 5rem;
}

.blog-catalog__heading h2 {
  margin: 0;
  font: 400 clamp(1.5rem, 3vw, 2rem)/1.4 var(--f-serif);
  text-wrap: pretty;
}

.blog-catalog__heading .sec-title__hl {
  color: var(--c-accent-dark);
}

.blog-catalog__heading p {
  margin: .65rem 0 0;
  color: var(--c-muted);
}

.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
  margin-block: 2rem 1.5rem;
}

.blog-filters button {
  padding: .65rem 1.05rem;
  border: 1px solid var(--c-border);
  border-radius: var(--r-btn);
  background: var(--c-panel);
  color: var(--c-text);
  font: 500 .875rem var(--f-body);
  cursor: pointer;
}

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

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

.blog-card-grid {
  display: grid;
  gap: 1rem;
}

.article-card,
.related-card,
.post-nav__link {
  position: relative;
  border: 1px solid var(--c-border);
  border-radius: var(--r-card);
  background: var(--c-panel);
  box-shadow: var(--sh-card);
  transition: border-color .18s ease, transform .18s ease, box-shadow .18s ease;
}

.article-card:hover,
.related-card:hover,
.post-nav__link:hover {
  border-color: var(--c-accent);
  transform: translateY(-2px);
  box-shadow: var(--sh-float);
}

.article-card {
  padding: clamp(1.25rem, 3vw, 2rem);
}

.article-card__meta,
.article-hero__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-start;
  gap: .6rem;
}

.article-card__date,
.article-hero__meta time,
.article-hero__readtime {
  color: var(--c-muted);
  font: .8rem var(--f-mono);
}

.tag {
  display: inline-block;
  padding: .28rem .6rem;
  border-radius: var(--r-btn);
  background: var(--c-panel-2);
  color: var(--c-text);
  font: 500 .78rem var(--f-body);
}

.article-card h3 {
  margin: 1rem 0 .7rem;
  font: 500 clamp(1.15rem, 2.5vw, 1.4rem)/1.45 var(--f-display);
  letter-spacing: -.01em;
  text-wrap: pretty;
  overflow-wrap: anywhere;
}

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

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

.article-card__summary {
  margin: 0 0 1.25rem;
  color: var(--c-muted);
  line-height: 1.8;
}

.article-card__read {
  color: var(--c-accent-dark);
  font-weight: 600;
  text-underline-offset: .25em;
}

.blog-empty {
  padding: 2rem;
  border: 1px solid var(--c-border);
  border-radius: var(--r-card);
  background: var(--c-panel);
  color: var(--c-muted);
}

/* 文章页的面包屑、窗口卡、正文与文末组件共用一条阅读列。 */
.article-hero {
  position: relative;
  overflow: hidden;
  padding-top: 0;
  padding-bottom: 0;
  border: 1px solid var(--c-border);
  border-radius: var(--r-card);
  background: var(--c-panel);
  box-shadow: var(--sh-card), inset 0 1px var(--blog-hero-glow);
}

.article-hero__chrome {
  position: relative;
  min-height: 3rem;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: .7rem clamp(1.5rem, 4vw, 2.5rem);
  border-bottom: 1px solid var(--c-border);
  background: linear-gradient(90deg, var(--c-panel-2), var(--c-panel));
  color: var(--c-muted);
  font: .75rem var(--f-mono);
}

.article-hero__chrome::before {
  content: "";
  position: absolute;
  left: clamp(1.5rem, 4vw, 2.5rem);
  top: 50%;
  width: .5rem;
  height: .5rem;
  border-radius: 50%;
  background: var(--blog-window-mark);
  box-shadow: .9rem 0 var(--blog-window-warn), 1.8rem 0 var(--blog-window-ready);
  translate: 0 -50%;
}

.article-hero__body {
  padding: clamp(1.5rem, 4vw, 2.5rem);
}

.article-hero__meta {
  margin-bottom: 1.15rem;
}

.article-hero__meta time,
.article-hero__readtime {
  padding: .3rem .65rem;
  border: 1px solid var(--c-border);
  border-radius: var(--r-btn);
}

.article-hero__meta .tag {
  background: var(--c-accent);
  color: var(--c-panel);
}

.article-hero h1 {
  margin: 0 0 1rem;
  font: 500 clamp(1.85rem, 4vw, 2.6rem)/1.35 var(--f-display);
  letter-spacing: -.02em;
  text-wrap: pretty;
  overflow-wrap: anywhere;
}

.article-hero__summary {
  margin: 0;
  max-width: 49rem;
  color: var(--c-muted);
  font: 1rem/1.8 var(--f-body);
}

.reading-wrap {
  padding-top: 1.5rem;
  padding-bottom: 2.5rem;
}

.blog-article .prose {
  margin-inline: auto;
}

.prose {
  min-width: 0;
  color: var(--c-text);
  font: 1rem/1.85 var(--f-body);
  overflow-wrap: break-word;
}

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

.prose h2,
.prose h3 {
  text-wrap: pretty;
  overflow-wrap: anywhere;
  letter-spacing: -.01em;
}

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

.prose h2 {
  counter-increment: blog-section;
  margin: 2.75rem 0 1rem;
  font: 400 clamp(1.35rem, 2.5vw, 1.6rem)/1.5 var(--f-serif);
}

.prose h2::before {
  content: counter(blog-section, decimal-leading-zero) " / ";
  display: inline;
  color: var(--c-accent-dark);
  font: 500 .78em var(--f-mono);
}

.prose h3 {
  margin: 2rem 0 .75rem;
  font: 600 clamp(1.1rem, 2vw, 1.3rem)/1.5 var(--f-body);
}

.prose p,
.prose ul,
.prose ol {
  margin: 0 0 1.3rem;
}

.prose li + li {
  margin-top: .45rem;
}

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

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

.prose pre {
  position: relative;
  margin: 1.5rem 0;
  padding: 2.9rem 1.4rem 1.4rem;
  overflow-x: auto;
  border-radius: var(--r-card);
  background: var(--blog-terminal);
  color: var(--blog-terminal-text);
  box-shadow: var(--sh-card);
}

.prose pre::before {
  content: "•  •  •     TERMINAL";
  position: absolute;
  inset: 0 0 auto;
  padding: .45rem 1.4rem;
  border-bottom: 1px solid var(--c-muted);
  color: var(--blog-terminal-text);
  font: .75rem var(--f-mono);
  letter-spacing: .08em;
}

.prose pre code {
  padding: 0;
  background: none;
  color: inherit;
  font: .875rem/1.7 var(--f-mono);
}

.prose :not(pre) > code {
  padding: .15rem .35rem;
  border-radius: var(--r-btn);
  background: var(--c-panel-2);
  font: .88em var(--f-mono);
}

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

.prose table {
  width: 100%;
  min-width: 35rem;
  border-collapse: collapse;
  font-size: .9rem;
}

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

.prose table thead {
  background: var(--c-text);
  color: var(--c-panel);
}

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

.prose table tbody tr:hover {
  background: color-mix(in srgb, var(--c-accent) 8%, var(--c-panel));
}

.prose blockquote,
.prose .callout {
  position: relative;
  margin: 1.5rem 0;
  padding: 1.25rem 1.5rem 1.25rem 3.2rem;
  border-left: .25rem solid var(--c-accent);
  border-radius: 0 var(--r-card) var(--r-card) 0;
  background: color-mix(in srgb, var(--c-accent) 7%, var(--c-panel));
}

.prose blockquote::before,
.prose .callout::before {
  content: "i";
  position: absolute;
  left: 1.05rem;
  top: 1.3rem;
  display: grid;
  place-items: center;
  width: 1.25rem;
  height: 1.25rem;
  border: 1px solid currentColor;
  border-radius: 50%;
  color: var(--c-accent-dark);
  font: 600 .8rem var(--f-serif);
}

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

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

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

.prose .callout--success {
  border-left-color: var(--c-success);
  background: color-mix(in srgb, var(--c-success) 9%, var(--c-panel));
}

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

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 11rem), 1fr));
  gap: .8rem;
  margin: 1.5rem 0;
}

.stat-card {
  padding: 1.1rem;
  border-top: .2rem solid var(--c-accent);
  border-radius: var(--r-card);
  background: var(--c-panel);
  box-shadow: var(--sh-card);
}

.stat-card:nth-child(even) {
  border-top-color: var(--c-success);
  background: color-mix(in srgb, var(--c-success) 6%, var(--c-panel));
}

.stat-num {
  display: block;
  color: var(--c-accent-dark);
  font: 500 clamp(1.3rem, 3vw, 1.75rem)/1.3 var(--f-mono);
}

.stat-card:nth-child(even) .stat-num {
  color: var(--c-success);
}

.stat-label {
  display: block;
  margin-top: .4rem;
  color: var(--c-muted);
  font-size: .85rem;
}

.check-list {
  list-style: none;
  padding: .6rem;
  margin: 1.5rem 0;
  border: 1px solid var(--c-border);
  border-radius: var(--r-card);
  background: var(--c-panel-2);
}

.check-list li {
  list-style: none;
  padding: .8rem 1rem;
  border-radius: var(--r-btn);
  background: var(--c-panel);
}

.check-list li + li {
  margin-top: .5rem;
}

.verdict {
  margin: 1.5rem 0;
  padding: 1.15rem 1.4rem;
  border-left: .3rem solid var(--c-accent);
  border-radius: 0 var(--r-card) var(--r-card) 0;
  background: var(--c-panel);
  box-shadow: var(--sh-card);
}

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

.article-after {
  padding-bottom: 4rem;
}

.promo-block {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border: 1px solid var(--c-border);
  border-radius: var(--r-card);
  background: linear-gradient(120deg, var(--c-panel-2), var(--c-tray-top), var(--c-tray-bottom));
  box-shadow: var(--sh-tray), inset 0 1px var(--blog-hero-glow);
  color: var(--c-text);
}

.promo-block h2 {
  margin: 0 0 .5rem;
  font: 400 1.6rem/1.4 var(--f-serif);
}

.promo-block p {
  margin: 0;
  color: var(--c-text);
  line-height: 1.7;
}

.promo-block .btn--primary {
  background: var(--c-panel);
  border: 1px solid var(--c-text);
  color: var(--c-text);
}

.promo-block .btn--primary:hover {
  background: var(--c-text);
  color: var(--c-panel);
}

.promo-block .btn--ghost {
  border: 1px solid var(--c-text);
  color: var(--c-text);
}

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

#related-posts:empty,
#post-nav:empty {
  display: none;
}

#related-posts h2 {
  margin: 0 0 1rem;
  font: 400 1.6rem/1.4 var(--f-serif);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
  gap: .8rem;
}

.related-card {
  padding: 1.25rem;
}

.related-card h3 {
  margin: .8rem 0 1rem;
  font: 600 1rem/1.55 var(--f-body);
  text-wrap: pretty;
  overflow-wrap: anywhere;
}

.related-card time {
  color: var(--c-muted);
  font: .78rem var(--f-mono);
}

#post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .8rem;
  padding-top: 1.5rem;
}

.post-nav__link {
  display: block;
  min-width: 0;
  padding: 1.2rem;
  color: var(--c-text);
  text-decoration: none;
}

.post-nav__link--next {
  grid-column: 2;
}

.post-nav__label {
  display: block;
  margin-bottom: .55rem;
  color: var(--c-accent-dark);
  font: .8rem var(--f-mono);
}

.post-nav__link strong {
  display: block;
  font-size: .95rem;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

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

@media (max-width: 640px) {
  .no-break {
    white-space: normal;
  }

  .article-hero__chrome {
    min-height: 2.75rem;
  }

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

  .post-nav__link--next {
    grid-column: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .article-card,
  .related-card,
  .post-nav__link {
    transition: none;
  }

  .article-card:hover,
  .related-card:hover,
  .post-nav__link:hover {
    transform: none;
  }
}