:root {
  --blog-reading: 54rem;
  --blog-gutter: clamp(1.25rem, 4vw, 2.5rem);
  --blog-rule: var(--border);
  --blog-tint: color-mix(in srgb, var(--accent) 10%, var(--bg-panel));
  --blog-tint-soft: color-mix(in srgb, var(--accent) 6%, var(--bg-panel));
}

.reading-wrap {
  width: 100%;
  max-width: calc(var(--blog-reading) + 2 * var(--blog-gutter));
  margin-inline: auto;
  padding-inline: var(--blog-gutter);
}

/* ---------- 列表页 ---------- */
.blog-hero {
  padding-block: clamp(1.75rem, 4vw, 3rem) clamp(1rem, 2.4vw, 1.75rem);
  position: relative;
  overflow-x: clip;
}

.blog-hero::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  height: 1px;
  background: var(--border-soft);
}

.blog-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.blog-eyebrow-dot {
  width: 7px;
  height: 7px;
  border-radius: var(--r-pill);
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-wash);
}

.blog-hero h1 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.75rem, 3.2vw, 3rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  text-wrap: pretty;
  color: var(--ink);
}

.blog-hero h1 .hl {
  background-image: linear-gradient(transparent 62%, var(--accent-wash-2) 62%);
  background-repeat: no-repeat;
  background-size: 100% 100%;
  padding-inline: 0.06em;
}

.blog-lede {
  margin: 0;
  max-width: 44rem;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--muted);
}

.blog-index {
  padding-block: clamp(1.5rem, 3vw, 2.25rem) clamp(2.5rem, 6vw, 4rem);
}

.blog-section-title {
  margin: 0 0 1.1rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.tag-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.9rem;
}

.filter-btn {
  appearance: none;
  cursor: pointer;
  padding: 0.5rem 0.95rem;
  min-height: 40px;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-pill);
  background: transparent;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.2;
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.filter-btn:hover {
  border-color: var(--accent-dark);
  background: var(--accent-wash);
}

.filter-btn.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--bg);
}

.filter-btn:focus-visible {
  outline: 2px solid var(--accent-dark);
  outline-offset: 2px;
}

.filter-status {
  margin: 0 0 1.35rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.post-list {
  display: grid;
  gap: 1rem;
}

.post-card {
  position: relative;
  padding: 1.25rem 1.35rem 1.15rem;
  background: var(--bg-panel);
  border: 1px solid var(--blog-rule);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-card);
  transition: border-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
  overflow: hidden;
}

.post-card::before {
  content: "";
  position: absolute;
  inset-block: 1rem;
  inset-inline-start: 0;
  width: 3px;
  border-radius: var(--r-pill);
  background: linear-gradient(180deg, var(--accent), color-mix(in srgb, var(--accent) 35%, var(--bg-panel)));
  opacity: 0;
  transition: opacity 0.18s ease;
}

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

.post-card:hover::before {
  opacity: 1;
}

.post-card[hidden] {
  display: none;
}

.post-tag {
  display: inline-block;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-bottom: 0.6rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--r-pill);
  background: var(--accent-wash);
  border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--border));
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
}

.post-title {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.0625rem, 2vw, 1.25rem);
  line-height: 1.45;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}

.post-title a {
  color: var(--ink);
  text-decoration: none;
  background-image: linear-gradient(var(--accent), var(--accent));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0 2px;
  transition: background-size 0.22s ease;
}

.post-title a:hover {
  background-size: 100% 2px;
}

.post-title a:focus-visible {
  outline: 2px solid var(--accent-dark);
  outline-offset: 3px;
  border-radius: var(--r-xs);
}

.post-summary {
  margin: 0 0 0.85rem;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted);
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
}

.post-more {
  color: var(--accent-dark);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.post-more:hover {
  border-bottom-color: currentColor;
}

.post-empty {
  margin: 0;
  padding: 1.5rem;
  border: 1px dashed var(--border-strong);
  border-radius: var(--r-md);
  color: var(--muted);
  text-align: center;
}

.post-fallback {
  margin: 0;
  padding-inline-start: 1.1rem;
  line-height: 2;
}

.post-fallback a {
  color: var(--ink);
}

/* ---------- 文章页 ---------- */
.breadcrumb {
  margin-top: 1.5rem;
  padding-top: 0.35rem;
  padding-bottom: 0.25rem;
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.8125rem;
  color: var(--muted);
}

.breadcrumb-list li {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-width: 0;
}

.breadcrumb-list li + li::before {
  content: "/";
  color: var(--border-strong);
}

.breadcrumb-list a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.breadcrumb-list a:hover {
  color: var(--ink);
  border-bottom-color: var(--border-strong);
}

.breadcrumb-list [aria-current="page"] {
  color: var(--ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 22rem;
}

.article-hero {
  margin-top: 0.75rem;
  margin-inline: calc(-1 * clamp(1.5rem, 3.4vw, 2.5rem));
}

@media (max-width: 640px) {
  .article-hero {
    margin-inline: calc(-1 * (var(--blog-gutter) - 0.25rem));
  }
  .article-hero-card {
    padding-inline: calc(var(--blog-gutter) - 0.25rem);
  }
}

.article-hero-card {
  position: relative;
  padding: clamp(1.5rem, 3.2vw, 2.25rem) clamp(1.5rem, 3.4vw, 2.5rem);
  background:
    linear-gradient(180deg, var(--blog-tint-soft), var(--bg-panel) 70%),
    var(--bg-panel);
  border: 1px solid var(--blog-rule);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.article-hero-card::after {
  content: "";
  position: absolute;
  inset-block: 1rem;
  inset-inline-start: 0.75rem;
  width: 4px;
  border-radius: var(--r-pill);
  background: linear-gradient(180deg, var(--accent), color-mix(in srgb, var(--accent) 30%, var(--bg-panel)));
}

.article-hero-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity: 0.7;
  pointer-events: none;
}

.article-hero-card > * {
  position: relative;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
}

.article-meta time,
.article-meta .article-readtime {
  padding: 0.22rem 0.6rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-pill);
  background: var(--bg-panel);
}

.article-meta .post-tag {
  margin-bottom: 0;
}

.article-hero h1 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 2.9vw, 2.4rem);
  line-height: 1.28;
  letter-spacing: -0.02em;
  text-wrap: pretty;
  color: var(--ink);
}

.article-summary {
  margin: 0;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--muted);
}

.article-body {
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  padding-bottom: clamp(1.5rem, 3vw, 2rem);
}

.article-body > * {
  max-width: 100%;
}

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

.article-body p {
  margin: 0 0 1.1rem;
}

.article-body h2 {
  position: relative;
  margin: 2.25rem 0 0.9rem;
  padding-inline-start: 2.35rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.25rem, 2.1vw, 1.6rem);
  line-height: 1.4;
  letter-spacing: -0.015em;
  text-wrap: pretty;
  color: var(--ink);
  counter-increment: blog-sec;
}

.article-body {
  counter-reset: blog-sec;
}

.article-body h2::before {
  content: counter(blog-sec, decimal-leading-zero);
  position: absolute;
  inset-inline-start: 0;
  inset-block-start: 0.18em;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--accent-dark);
  padding: 0.1rem 0.4rem;
  border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--border));
  border-radius: var(--r-xs);
  background: var(--accent-wash);
}

.article-body h3 {
  margin: 1.6rem 0 0.6rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.0625rem, 1.7vw, 1.3rem);
  line-height: 1.45;
  letter-spacing: -0.01em;
  text-wrap: pretty;
  color: var(--ink);
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.15rem;
  padding-inline-start: 1.4rem;
}

.article-body li {
  margin-bottom: 0.45rem;
}

.article-body li::marker {
  color: var(--accent-dark);
}

.article-body a {
  color: var(--accent-dark);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.article-body a:hover {
  color: var(--ink);
}

.article-body strong {
  font-weight: 700;
  color: var(--ink);
}

.article-body code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  padding: 0.1em 0.35em;
  border-radius: var(--r-xs);
  background: var(--bg-panel-2);
  border: 1px solid var(--border-soft);
  overflow-wrap: anywhere;
}

.article-body blockquote {
  margin: 0 0 1.15rem;
  padding: 0.9rem 1.15rem;
  border-inline-start: 3px solid var(--accent);
  background: var(--blog-tint-soft);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  color: var(--ink);
}

.article-body blockquote p:last-child {
  margin-bottom: 0;
}

.article-body pre {
  margin: 0 0 1.25rem;
  padding: 0;
  background: var(--ink-deep);
  border: 1px solid var(--ink-deep);
  border-radius: var(--r-md);
  overflow-x: auto;
  box-shadow: var(--shadow-card);
}

.article-body pre code {
  display: block;
  padding: 1rem 1.15rem;
  background: transparent;
  border: 0;
  border-radius: 0;
  color: color-mix(in srgb, var(--bg) 88%, var(--accent));
  font-size: 0.8125rem;
  line-height: 1.7;
  white-space: pre;
  overflow-wrap: normal;
}

.article-body table {
  width: 100%;
  margin: 0 0 1.25rem;
  border-collapse: collapse;
  font-size: 0.9375rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  overflow: hidden;
}

.article-body thead th {
  background: var(--ink-deep);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-align: start;
  padding: 0.6rem 0.75rem;
  white-space: nowrap;
}

.article-body tbody td {
  padding: 0.6rem 0.75rem;
  border-top: 1px solid var(--border-soft);
  word-break: keep-all;
}

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

.article-body tbody tr:hover {
  background: var(--accent-wash);
}

.article-body .table-scroll {
  max-width: 100%;
  overflow-x: auto;
  margin-bottom: 1.25rem;
}

.article-body .table-scroll table {
  margin-bottom: 0;
}

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

/* 富文本锚点组件 */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: 0.75rem;
  margin: 0 0 1.35rem;
}

.stat-card {
  padding: 0.9rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--bg-panel);
  border-top: 3px solid var(--accent);
  box-shadow: var(--shadow-card);
}

.stat-card:nth-child(even) {
  border-top-color: var(--success);
  background: var(--blog-tint-soft);
}

.stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-bottom: 0.2rem;
}

.stat-label {
  display: block;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--muted);
}

.check-list {
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0;
}

.check-list li {
  margin-bottom: 0.5rem;
  padding: 0.6rem 0.85rem;
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--r-sm);
  font-size: 0.9375rem;
  line-height: 1.75;
}

.verdict {
  margin: 0 0 1.35rem;
  padding: 0.9rem 1.1rem;
  border-inline-start: 4px solid var(--accent);
  background: var(--blog-tint);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--ink);
}

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

.callout {
  position: relative;
  margin: 0 0 1.25rem;
  padding: 0.9rem 1.1rem 0.9rem 2.6rem;
  border-inline-start: 3px solid var(--border-strong);
  background: var(--bg-panel-2);
  border-radius: 0 var(--r-md) var(--r-md) 0;
}

.callout::before {
  content: "i";
  position: absolute;
  inset-inline-start: 0.9rem;
  inset-block-start: 0.95rem;
  width: 1.25rem;
  height: 1.25rem;
  display: grid;
  place-items: center;
  border-radius: var(--r-pill);
  background: var(--bg-panel);
  border: 1px solid var(--border-strong);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--muted);
}

.callout p {
  margin: 0;
  font-size: 0.9375rem;
}

.callout.is-warning {
  border-inline-start-color: var(--warn);
  background: var(--warn-wash);
}

.callout.is-warning::before {
  content: "!";
  border-color: var(--warn);
  color: var(--warn);
}

.callout.is-success {
  border-inline-start-color: var(--success);
  background: var(--success-wash);
}

.callout.is-success::before {
  content: "✓";
  border-color: var(--success);
  color: var(--success);
}

/* 文末推广卡 */
.promo-block {
  position: relative;
  margin-top: clamp(1.75rem, 3.5vw, 2.5rem);
  padding: clamp(1.35rem, 3vw, 2rem);
  border: 1px solid color-mix(in srgb, var(--accent) 40%, var(--border));
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 140% at 100% 0%, var(--accent-wash-2), transparent 62%),
    linear-gradient(180deg, var(--bg-panel), var(--blog-tint-soft));
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.promo-block::before {
  content: "";
  position: absolute;
  inset-block: 0;
  inset-inline-start: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--accent), color-mix(in srgb, var(--accent) 25%, var(--bg-panel)));
}

.promo-brand {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.promo-text {
  margin: 0 0 1rem;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted);
}

.promo-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

/* 延伸阅读 / 上下篇 */
#related-posts {
  margin-top: clamp(1.75rem, 3.5vw, 2.25rem);
  padding-top: 0;
}

#related-posts[hidden],
#post-nav[hidden] {
  display: none;
}

.related-title {
  margin: 0 0 0.9rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: 0.75rem;
}

.related-card {
  position: relative;
  padding: 1rem 1.1rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  border-top: 2px solid var(--border);
  transition: border-top-color 0.18s ease, transform 0.18s ease;
}

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

.related-card-title {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.9375rem;
  line-height: 1.5;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}

.related-card-title a {
  color: var(--ink);
  text-decoration: none;
}

.related-card-title a:hover {
  color: var(--accent-dark);
}

.related-meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--muted);
}

#post-nav {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: 0.75rem;
  margin-top: 1.5rem;
  padding-top: 0;
  padding-bottom: clamp(1.5rem, 3vw, 2rem);
}

.post-nav-card {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 0.9rem 1.05rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  text-decoration: none;
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.post-nav-card:hover {
  border-color: var(--accent-dark);
  transform: translateY(-2px);
}

.post-nav-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.05em;
  color: var(--accent-dark);
}

.post-nav-title {
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--ink);
}

.post-nav-next {
  text-align: end;
}

/* 悬浮 CTA(文章页) */
.float-cta {
  position: fixed;
  inset-inline-end: clamp(0.85rem, 2vw, 1.5rem);
  inset-block-end: clamp(0.85rem, 2vw, 1.5rem);
  z-index: 60;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.15rem;
  min-height: 44px;
  border-radius: var(--r-pill);
  background: var(--ink-deep);
  color: var(--bg);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  box-shadow: var(--shadow-note);
  border: 1px solid color-mix(in srgb, var(--accent) 55%, var(--ink-deep));
  transition: transform 0.18s ease, background-color 0.18s ease;
}

.float-cta svg {
  width: 16px;
  height: 16px;
  flex: none;
  color: var(--accent);
}

.float-cta:hover {
  transform: translateY(-2px);
  background: var(--ink);
}

.float-cta:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

@media (max-width: 640px) {
  .float-cta {
    inset-inline-end: 0.75rem;
    inset-block-end: 0.75rem;
    padding: 0.6rem 0.95rem;
    font-size: 0.8125rem;
  }

  .breadcrumb-list [aria-current="page"] {
    max-width: 12rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .post-card,
  .related-card,
  .post-nav-card,
  .float-cta,
  .post-title a {
    transition: none;
  }

  .post-card:hover,
  .related-card:hover,
  .post-nav-card:hover,
  .float-cta:hover {
    transform: none;
  }
}