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

.blog-hero {
  padding-block: clamp(2.6rem, 5vw, 4.2rem) clamp(1.8rem, 3.4vw, 2.6rem);
}

/* 图章角标卡:hero 唯一装饰是右上角旋转图章 */
.stamp-hero {
  position: relative;
  overflow: hidden;
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--r-card);
  padding-block: clamp(1.8rem, 3.6vw, 2.8rem);
  padding-inline: clamp(1.5rem, 3.6vw, 3rem);
  box-shadow: 0 18px 40px -30px var(--shadow-g-deep);
}

.stamp-hero::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: 40px 40px;
  opacity: 0.9;
  pointer-events: none;
}

.stamp-hero::after {
  content: "FN";
  position: absolute;
  top: clamp(1rem, 2.4vw, 1.8rem);
  right: clamp(1rem, 2.4vw, 1.8rem);
  width: 78px;
  height: 78px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 1.35rem;
  letter-spacing: 0.06em;
  color: var(--accent-dark);
  background: var(--bg-panel);
  border: 1px solid var(--accent);
  border-radius: 50%;
  box-shadow: inset 0 0 0 5px var(--bg-panel), inset 0 0 0 6px var(--accent-tint);
  transform: rotate(-11deg);
  pointer-events: none;
}

.stamp-hero__meta {
  position: relative;
  margin: 0 0 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--muted-2);
  text-transform: uppercase;
}

.stamp-hero h1 {
  position: relative;
  margin: 0;
  max-width: 26ch;
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 3.6vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.16;
  text-wrap: pretty;
  color: var(--text);
}

.stamp-hero__lede {
  position: relative;
  margin: 1rem 0 0;
  max-width: 60ch;
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--muted);
}

.blog-list-sec {
  padding-block: clamp(1.6rem, 3vw, 2.4rem) clamp(2.4rem, 5vw, 3.6rem);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid var(--border-soft);
}

.tag-btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--bg-panel);
  color: var(--muted);
  font-family: var(--font-body);
  font-size: 0.88rem;
  line-height: 1;
  padding: 0.62rem 0.95rem;
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease, transform 0.18s ease;
}

.tag-btn:hover {
  color: var(--accent-dark);
  border-color: var(--accent);
  transform: translateY(-1px);
}

.tag-btn.is-active {
  background: var(--accent-tint);
  border-color: var(--accent);
  color: var(--accent-dark);
  font-weight: 600;
}

.tag-btn:focus-visible {
  outline: var(--focus-ring);
  outline-offset: 2px;
}

.list-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: clamp(1.6rem, 3vw, 2.2rem);
}

.list-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2vw, 1.6rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.post-count {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--muted-2);
}

.post-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: clamp(1rem, 2vw, 1.4rem);
  margin-top: clamp(1.2rem, 2.4vw, 1.8rem);
}

.post-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--r-card);
  padding: clamp(1.2rem, 2.2vw, 1.6rem);
  box-shadow: 0 14px 34px -28px var(--shadow-g-deep);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.post-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: clamp(1.2rem, 2.2vw, 1.6rem);
  right: clamp(1.2rem, 2.2vw, 1.6rem);
  height: 3px;
  border-radius: var(--r-pill);
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  opacity: 0;
  transition: opacity 0.2s ease;
}

.post-card:hover {
  transform: translateY(-4px);
  border-color: var(--border);
  box-shadow: 0 22px 44px -30px var(--shadow-g-deep);
}

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

.post-meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.post-date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted-2);
}

.post-card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.16rem;
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}

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

.post-card h3 a:hover {
  color: var(--accent-dark);
}

.post-card p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--muted);
}

.post-more {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: auto;
  padding-top: 0.4rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-dark);
  text-decoration: none;
}

.post-more svg {
  transition: transform 0.18s ease;
}

.post-more:hover svg {
  transform: translateX(3px);
}

.post-empty {
  margin: 0;
  padding: 2rem 0;
  color: var(--muted);
}

/* ============ 文章页 ============ */

.article-wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.breadcrumb {
  margin-top: 1.6rem;
  padding-top: 0.4rem;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.84rem;
  color: var(--muted-2);
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

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

.breadcrumb a {
  color: var(--muted);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--accent-dark);
  text-decoration: underline;
}

.reading-wrap {
  width: min(100%, calc(var(--content-reading) + 2 * var(--gutter)));
  max-width: none;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

:root {
  --article-col: 55rem;
}

.article-hero {
  width: 100%;
  max-width: var(--article-col);
  margin-inline: auto;
  padding-block: clamp(1.4rem, 2.6vw, 2rem) clamp(1.6rem, 3vw, 2.2rem);
  padding-inline: clamp(1.5rem, 3.2vw, 2.6rem);
}

.article-shell {
  width: 100%;
  max-width: var(--article-col);
  margin-inline: auto;
  padding-inline: clamp(1.5rem, 3.2vw, 2.6rem);
}

.article-hero__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 0 0 1rem;
}

.article-hero__meta .badge {
  background: var(--accent);
  border-color: var(--accent);
  color: #FFFFFF;
}

.article-hero__meta .meta-date,
.article-hero__meta .meta-time {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted-2);
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  padding: 0.28rem 0.7rem;
  background: var(--bg-panel);
}

.article-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.2vw, 2.6rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  text-wrap: pretty;
  color: var(--text);
}

.article-hero__lede {
  margin: 1rem 0 0;
  font-size: 1rem;
  line-height: 1.82;
  color: var(--muted);
}

.prose {
  width: 100%;
  max-width: var(--article-col);
  margin-inline: auto;
  padding-inline: clamp(1.5rem, 3.2vw, 2.6rem);
  padding-block: clamp(0.6rem, 1.4vw, 1.2rem) clamp(1.4rem, 2.6vw, 2rem);
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text);
  counter-reset: h2sec;
}

.prose > p,
.prose > ul,
.prose > ol,
.prose > blockquote,
.prose > .callout,
.prose > .stat-grid,
.prose > .check-list,
.prose > .verdict,
.prose > .table-scroll,
.prose > pre {
  margin-block: 0 1.15rem;
}

.prose h2 {
  counter-increment: h2sec;
  position: relative;
  margin: clamp(2rem, 4vw, 2.8rem) 0 0.9rem;
  padding-top: 0.9rem;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.2vw, 1.6rem);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
  text-wrap: pretty;
  color: var(--text);
}

.prose h2::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 44px;
  height: 3px;
  border-radius: var(--r-pill);
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.prose h2::after {
  content: counter(h2sec, decimal-leading-zero);
  position: absolute;
  top: 0;
  left: 56px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--muted-2);
}

.prose h3 {
  margin: 1.6rem 0 0.6rem;
  font-family: var(--font-display);
  font-size: clamp(1.08rem, 1.6vw, 1.3rem);
  font-weight: 700;
  line-height: 1.45;
  text-wrap: pretty;
  color: var(--text);
}

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

.prose ul,
.prose ol {
  padding-left: 1.25rem;
}

.prose li {
  margin-bottom: 0.45rem;
}

.prose li::marker {
  color: var(--accent);
}

.prose blockquote {
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: var(--bg-panel-2);
  padding: 0.9rem 1.1rem;
  color: var(--muted);
}

.prose blockquote p {
  margin: 0;
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--bg-panel-2);
  border: 1px solid var(--border-soft);
  border-radius: var(--r-xs);
  padding: 0.12em 0.4em;
  word-break: break-word;
}

.prose pre {
  overflow-x: auto;
  background: var(--text);
  color: var(--bg);
  border-radius: var(--r-md);
  padding: 1rem 1.1rem;
  border: 1px solid var(--text);
}

.prose pre code {
  background: none;
  border: 0;
  padding: 0;
  color: inherit;
  font-size: 0.86rem;
  line-height: 1.7;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.prose thead th {
  background: var(--accent-dark);
  color: #FFFFFF;
  font-weight: 600;
  text-align: left;
  padding: 0.7rem 0.85rem;
  white-space: nowrap;
}

.prose tbody td {
  padding: 0.68rem 0.85rem;
  border-bottom: 1px solid var(--border-soft);
}

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

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

.prose .table-scroll {
  overflow-x: auto;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.8rem;
}

.stat-card {
  background: var(--bg-panel-2);
  border: 1px solid var(--border-soft);
  border-top: 3px solid var(--accent);
  border-radius: var(--r-md);
  padding: 1rem 1.1rem;
}

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

.stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-dark);
  font-variant-numeric: tabular-nums;
}

.stat-label {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.86rem;
  line-height: 1.6;
  color: var(--muted);
}

.check-list {
  list-style: none;
  padding-left: 0;
  margin: 0 0 1.15rem;
  display: grid;
  gap: 0.55rem;
}

.check-list li {
  margin: 0;
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--r-sm);
  padding: 0.7rem 0.9rem;
  line-height: 1.7;
}

.verdict {
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: var(--accent-tint);
  padding: 0.95rem 1.1rem;
  line-height: 1.8;
}

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

.callout {
  position: relative;
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: var(--bg-panel-2);
  padding: 0.95rem 1.1rem 0.95rem 3rem;
}

.callout::before {
  content: "";
  position: absolute;
  left: 1.05rem;
  top: 1.15rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid var(--accent);
}

.callout h4 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 0.98rem;
  color: var(--text);
}

.callout p {
  margin: 0;
  color: var(--muted);
}

.callout-warn {
  border-left-color: var(--warn);
  background: color-mix(in srgb, var(--warn) 8%, var(--bg-panel));
}

.callout-warn::before {
  border-color: var(--warn);
}

.callout-neutral {
  border-left-color: var(--border);
}

.callout-neutral::before {
  border-color: var(--muted-2);
}

.promo-block {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.4rem;
  flex-wrap: wrap;
  border-radius: var(--r-card);
  padding: clamp(1.3rem, 2.6vw, 1.9rem);
}

.promo-block--brand {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #FFFFFF;
  box-shadow: 0 20px 44px -32px var(--shadow-g-deep);
}

.promo-block--brand h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: #FFFFFF;
}

.promo-block--brand p {
  margin: 0;
  color: #FFFFFF;
  opacity: 0.94;
}

.promo-block--brand .btn-primary {
  background: var(--bg-panel);
  color: var(--accent-dark);
  border-color: var(--bg-panel);
}

.promo-block--brand .btn-primary:hover {
  background: var(--accent-tint);
  color: var(--accent-dark);
}

.article-foot {
  width: 100%;
  max-width: var(--article-col);
  margin-inline: auto;
  padding-inline: clamp(1.5rem, 3.2vw, 2.6rem);
}

.article-foot .promo-block {
  margin-top: clamp(1.6rem, 3vw, 2.2rem);
}

/* 文章收尾 CTA:静态居中按钮,不遮挡正文 */
.float-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  width: min(calc(100% - 2 * var(--gutter)), 320px);
  min-height: 48px;
  margin: clamp(1.6rem, 3vw, 2.2rem) auto 0;
  padding: 0 24px;
  border-radius: var(--r-pill);
  background: var(--accent);
  color: #FFFFFF;
  font-weight: 600;
  text-decoration: none;
  box-shadow: 0 18px 34px -24px var(--shadow-g-deep);
}

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

#related-posts {
  width: 100%;
  max-width: var(--article-col);
  margin-inline: auto;
  padding-inline: clamp(1.5rem, 3.2vw, 2.6rem);
  padding-top: clamp(1.8rem, 3.4vw, 2.4rem);
}

#post-nav {
  width: 100%;
  max-width: var(--article-col);
  margin-inline: auto;
  padding-inline: clamp(1.5rem, 3.2vw, 2.6rem);
  padding-bottom: clamp(1.4rem, 2.6vw, 2rem);
}

.related-head,
.post-nav-head {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.9rem;
}

.related-card {
  position: relative;
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--r-md);
  padding: 1rem 1.1rem;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.related-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 1.1rem;
  right: 1.1rem;
  height: 2px;
  border-radius: var(--r-pill);
  background: var(--accent);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.related-card:hover {
  transform: translateY(-3px);
  border-color: var(--border);
  box-shadow: 0 18px 36px -30px var(--shadow-g-deep);
}

.related-card:hover::after {
  opacity: 1;
}

.related-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--muted-2);
}

.related-card h3 {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  text-wrap: pretty;
}

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

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

.related-card p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.72;
  color: var(--muted);
}

.related-more {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin: 1rem 0 0;
  font-size: 0.9rem;
  font-weight: 600;
}

.related-more a {
  color: var(--accent-dark);
  text-decoration: none;
}

.related-more:hover svg {
  transform: translateX(3px);
}

.post-nav-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.9rem;
}

.post-nav-card {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  background: var(--bg-panel-2);
  border: 1px solid var(--border-soft);
  border-radius: var(--r-md);
  padding: 0.95rem 1.1rem;
  text-decoration: none;
  transition: transform 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.post-nav-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  background: var(--bg-panel);
}

.post-nav-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--accent-dark);
}

.post-nav-title {
  font-size: 0.96rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--text);
}

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

@media (max-width: 640px) {
  .stamp-hero::after {
    width: 60px;
    height: 60px;
    font-size: 1.05rem;
  }

  .article-hero,
  .article-shell,
  .article-foot,
  #related-posts,
  #post-nav {
    padding-inline: 1.15rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .post-card,
  .related-card,
  .post-nav-card,
  .tag-btn,
  .post-more svg {
    transition: none;
  }

  .post-card:hover,
  .related-card:hover,
  .post-nav-card:hover,
  .tag-btn:hover {
    transform: none;
  }
}