/* VPNFL 博客:列表页与文章页专属样式(全部取值来自设计令牌) */

:root {
  --read-col: 54rem;
  --read-pad: clamp(1.25rem, 4vw, 2.5rem);
}

/* ---------- 共用阅读列:面包屑 / hero / 正文 / 文末组件共用同一条列 ---------- */
body .reading-wrap,
body .article-hero {
  width: 100%;
  max-width: calc(var(--read-col) + var(--read-pad) * 2);
  margin-inline: auto;
  padding-inline: var(--read-pad);
  box-sizing: border-box;
}

/* ---------- 面包屑(与页头留呼吸空间) ---------- */
.crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  margin-top: 1.7rem;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--muted);
}

.crumb a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.crumb a:hover {
  color: var(--accent);
}

.crumb .sep {
  color: var(--muted);
  opacity: 0.6;
}

.crumb [aria-current="page"] {
  color: var(--text);
  font-weight: 600;
}

/* ---------- 列表页 hero:offset-block 错位色块 ---------- */
.blog-hero {
  position: relative;
  padding-block: 2.4rem 0.4rem;
}

.blog-hero-in {
  position: relative;
}

.blog-hero-in::before {
  content: "";
  position: absolute;
  z-index: 0;
  left: calc(var(--read-pad) - 0.75rem);
  top: -0.75rem;
  bottom: -0.75rem;
  width: min(46%, 19rem);
  border-radius: var(--r-md);
  background: color-mix(in srgb, var(--accent) 9%, transparent);
  pointer-events: none;
}

.blog-hero-in::after {
  content: "2026";
  position: absolute;
  z-index: 0;
  right: var(--read-pad);
  top: -1.5rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(3rem, 8vw, 5.2rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: color-mix(in srgb, var(--accent) 9%, transparent);
  pointer-events: none;
  user-select: none;
}

.blog-hero-in > * {
  position: relative;
  z-index: 1;
}

.blog-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--accent);
}

.blog-kicker::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 16%, transparent);
}

.blog-hero h1 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4.4vw, 2.7rem);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.018em;
  color: var(--text);
  text-wrap: pretty;
}

.blog-lede {
  max-width: 36rem;
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 列表区:筛选 + 卡片 ---------- */
.blog-list-sec {
  padding-block: 1.7rem 3.4rem;
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.filter-btn {
  appearance: none;
  -webkit-appearance: none;
  padding: 0.42rem 0.95rem;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  background: var(--bg-panel);
  color: var(--muted);
  font-family: inherit;
  font-size: 0.85rem;
  line-height: 1.5;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.filter-btn:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  color: var(--accent);
}

.filter-btn.is-active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg-panel);
  font-weight: 600;
}

.list-count {
  margin: 1rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.post-list {
  display: grid;
  gap: 1rem;
  margin-top: 1.1rem;
}

.post-card {
  position: relative;
  padding: 1.4rem 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  background: var(--bg-panel);
  box-shadow: var(--shadow-card);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.post-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.3rem;
  bottom: 1.3rem;
  width: 3px;
  border-radius: var(--r-pill);
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  opacity: 0;
  transition: opacity 0.25s ease;
}

.post-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--accent) 32%, var(--border));
  box-shadow: var(--shadow-float);
}

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

.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.7rem;
}

.post-meta time {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--muted);
}

.post-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.14rem;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -0.012em;
}

.post-card h3 a {
  color: var(--text);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.post-card p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--muted);
}

.post-more {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.9rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
}

.post-empty {
  margin-top: 1.2rem;
  padding: 1.2rem;
  border: 1px dashed var(--border);
  border-radius: var(--r-md);
  color: var(--muted);
  font-size: 0.92rem;
  text-align: center;
}

/* ---------- 文章页 hero:offset-block 错位色块 + 超大半透明年份 ---------- */
.article-hero {
  position: relative;
  padding-block: 2.3rem 1.9rem;
}

.article-hero::before {
  content: "";
  position: absolute;
  z-index: 0;
  left: calc(var(--read-pad) - 0.8rem);
  top: 1.9rem;
  bottom: 0.9rem;
  width: min(50%, 21rem);
  border-radius: var(--r-md);
  background: color-mix(in srgb, var(--accent) 9%, transparent);
  pointer-events: none;
}

.article-hero::after {
  content: "2026";
  position: absolute;
  z-index: 0;
  right: var(--read-pad);
  top: 0.9rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.8rem, 7vw, 4.8rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: color-mix(in srgb, var(--accent) 9%, transparent);
  pointer-events: none;
  user-select: none;
}

.article-hero > * {
  position: relative;
  z-index: 1;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1rem;
  padding-left: 0.7rem;
}

.meta-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.28rem 0.72rem;
  border-radius: var(--r-pill);
  background: var(--accent);
  color: var(--bg-panel);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.meta-line {
  display: inline-flex;
  align-items: center;
  padding: 0.24rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  background: var(--bg-panel);
  color: var(--muted);
  font-size: 0.76rem;
}

.article-hero h1 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.6vw, 2.5rem);
  font-weight: 800;
  line-height: 1.32;
  letter-spacing: -0.018em;
  color: var(--text);
  text-wrap: pretty;
}

.article-summary {
  max-width: 40rem;
  margin: 0;
  padding-left: 0.7rem;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 正文排版 ---------- */
.article-body {
  counter-reset: h2sec;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text);
}

.article-body > * + * {
  margin-top: 1.15rem;
}

.article-body p {
  margin: 0;
}

.article-body h2 {
  counter-increment: h2sec;
  position: relative;
  margin: 2.8rem 0 1.1rem;
  padding: 0 0 0.55rem 2.55rem;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 78%, transparent);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.42;
  letter-spacing: -0.012em;
  color: var(--text);
  text-wrap: pretty;
}

.article-body h2::before {
  content: counter(h2sec, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.2em;
  padding: 0.2rem 0.42rem;
  border-radius: var(--r-sm);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1.2;
}

.article-body h3 {
  margin: 2rem 0 0.8rem;
  font-size: 1.22rem;
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--text);
  text-wrap: pretty;
}

.article-body ul,
.article-body ol {
  margin: 0;
  padding-left: 1.35rem;
}

.article-body li {
  margin: 0.4rem 0;
}

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

.article-body a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--accent) 42%, transparent);
  text-underline-offset: 0.18em;
}

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

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

.article-body hr {
  margin: 2.2rem 0;
  border: 0;
  height: 1px;
  background: var(--border);
}

.article-body img {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
}

.article-body blockquote {
  margin: 1.5rem 0;
  padding: 0.95rem 1.15rem;
  border-left: 3px solid var(--accent-2);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: color-mix(in srgb, var(--accent-2) 8%, var(--bg-panel));
  color: var(--muted);
}

.article-body blockquote p + p {
  margin-top: 0.7rem;
}

/* 行内代码 */
.article-body code {
  padding: 0.12em 0.38em;
  border-radius: var(--r-sm);
  background: color-mix(in srgb, var(--bg-panel2) 72%, transparent);
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: 0.88em;
}

/* 终端窗代码块 */
.article-body pre {
  position: relative;
  margin: 1.5rem 0;
  padding: 1.95rem 1.15rem 1.1rem;
  border-radius: var(--r-md);
  background: var(--text);
  color: var(--bg-panel);
  overflow-x: auto;
  font-size: 0.86rem;
  line-height: 1.72;
  box-shadow: var(--shadow-win);
}

.article-body pre::before {
  content: "";
  position: absolute;
  left: 1.1rem;
  top: 0.85rem;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--error);
  box-shadow: 0.85rem 0 0 var(--warn), 1.7rem 0 0 var(--success);
}

.article-body pre code {
  padding: 0;
  border-radius: 0;
  background: none;
  color: inherit;
  font-size: 1em;
}

/* 表格:实色表头 + 斑马纹 + hover,窄屏横滑 */
.article-body table {
  width: 100%;
  margin: 1.4rem 0;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.article-body thead th {
  padding: 0.62rem 0.85rem;
  background: var(--accent);
  color: var(--bg-panel);
  font-weight: 600;
  text-align: left;
  white-space: nowrap;
}

.article-body tbody td {
  padding: 0.56rem 0.85rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.article-body tbody tr:nth-child(even) {
  background: color-mix(in srgb, var(--bg-panel2) 55%, transparent);
}

.article-body tbody tr:hover {
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

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

/* ---------- 富文本锚点:数据卡 / 勾叉清单 / 结论块 / callout ---------- */
.article-body .stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10.5rem, 1fr));
  gap: 0.85rem;
  margin: 1.5rem 0;
}

.article-body .stat-card {
  position: relative;
  overflow: hidden;
  padding: 1.15rem 1rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--bg-panel);
  box-shadow: var(--shadow-soft);
}

.article-body .stat-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--accent);
}

.article-body .stat-card:nth-child(2n)::before {
  background: var(--accent-2);
}

.article-body .stat-card:nth-child(3n)::before {
  background: var(--accent-dark);
}

.article-body .stat-card:nth-child(2n) {
  background: color-mix(in srgb, var(--accent) 5%, var(--bg-panel));
}

.article-body .stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--accent);
}

.article-body .stat-card:nth-child(2n) .stat-num {
  color: var(--accent-dark);
}

.article-body .stat-label {
  display: block;
  margin-top: 0.32rem;
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--muted);
}

.article-body .check-list {
  list-style: none;
  display: grid;
  gap: 0.5rem;
  margin: 1.3rem 0;
  padding-left: 0;
}

.article-body .check-list li {
  list-style: none;
  margin: 0;
  padding: 0.62rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--bg-panel);
  font-size: 0.94rem;
  line-height: 1.75;
}

.article-body .verdict {
  margin: 1.5rem 0;
  padding: 1rem 1.15rem;
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: color-mix(in srgb, var(--accent) 7%, var(--bg-panel));
  font-size: 0.96rem;
  line-height: 1.8;
}

.article-body .verdict strong,
.article-body .verdict b {
  color: var(--accent-dark);
}

.article-body .callout {
  position: relative;
  margin: 1.5rem 0;
  padding: 1rem 1.15rem 1rem 3.1rem;
  border-left: 3px solid var(--accent);
  border-radius: var(--r-sm);
  background: color-mix(in srgb, var(--accent) 7%, var(--bg-panel));
  font-size: 0.95rem;
  line-height: 1.8;
}

.article-body .callout::before {
  content: "i";
  position: absolute;
  left: 0.9rem;
  top: 1.05rem;
  display: grid;
  place-items: center;
  width: 1.35rem;
  height: 1.35rem;
  border-radius: 50%;
  background: var(--accent);
  color: var(--bg-panel);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  line-height: 1;
}

.article-body .callout.warning {
  border-left-color: var(--warn);
  background: color-mix(in srgb, var(--warn) 9%, var(--bg-panel));
}

.article-body .callout.warning::before {
  content: "!";
  background: var(--warn);
}

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

.article-body .callout.success::before {
  content: "\2713";
  background: var(--success);
}

/* ---------- 文末推广卡(整篇唯一) ---------- */
.promo-block {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem;
  margin-top: 2.8rem;
  padding: 1.7rem 1.6rem;
  border-radius: var(--r-lg);
  background: linear-gradient(135deg, var(--accent-dark) 0%, var(--accent) 58%, color-mix(in srgb, var(--accent) 55%, var(--accent-2)) 100%);
  box-shadow: var(--shadow-win);
  color: var(--bg-panel);
}

.promo-block::after {
  content: "";
  position: absolute;
  right: -3rem;
  top: -3rem;
  width: 11rem;
  height: 11rem;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent-2) 20%, transparent);
  pointer-events: none;
}

.promo-copy {
  position: relative;
  z-index: 1;
  max-width: 34rem;
}

.promo-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  color: color-mix(in srgb, var(--bg-panel) 84%, transparent);
}

.promo-brand i {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--accent-2);
}

.promo-block h3 {
  margin: 0 0 0.45rem;
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.42;
  letter-spacing: -0.01em;
  color: var(--bg-panel);
}

.promo-block p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: color-mix(in srgb, var(--bg-panel) 88%, transparent);
}

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

.promo-block .btn-main {
  background: var(--bg-panel);
  color: var(--accent-dark);
  box-shadow: var(--shadow-btn);
}

.promo-block .btn-main:hover {
  background: var(--bg-panel);
  color: var(--accent);
}

.promo-block .btn-ghost {
  background: transparent;
  border-color: color-mix(in srgb, var(--bg-panel) 52%, transparent);
  color: var(--bg-panel);
}

.promo-block .btn-ghost:hover {
  border-color: var(--bg-panel);
  background: color-mix(in srgb, var(--bg-panel) 12%, transparent);
  color: var(--bg-panel);
}

/* ---------- 延伸阅读 ---------- */
#related-posts {
  padding-block: 2.4rem 1.2rem;
}

.related-title {
  position: relative;
  margin: 0 0 0.9rem;
  padding-left: 1.1rem;
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: -0.012em;
  color: var(--text);
}

.related-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.26em;
  bottom: 0.26em;
  width: 3px;
  border-radius: var(--r-pill);
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 0.9rem;
}

.related-card {
  position: relative;
  padding: 1.05rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--bg-panel);
  box-shadow: var(--shadow-soft);
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.related-card::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  border-radius: var(--r-md) var(--r-md) 0 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.25s ease;
}

.related-card:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent) 32%, var(--border));
}

.related-card:hover::before {
  transform: scaleX(1);
}

.related-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.55rem;
}

.related-meta time {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
}

.related-card h3 {
  margin: 0 0 0.45rem;
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: -0.01em;
}

.related-card h3 a {
  color: var(--text);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.related-card p {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 上一篇 / 下一篇 ---------- */
#post-nav {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 0.9rem;
  padding-block: 1rem 2.4rem;
}

.post-nav-link {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 1.05rem 1.15rem;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--bg-panel);
  box-shadow: var(--shadow-soft);
  text-decoration: none;
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.post-nav-link::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  border-radius: var(--r-md) var(--r-md) 0 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.25s ease;
}

.post-nav-link:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent) 32%, var(--border));
  box-shadow: var(--shadow-float);
}

.post-nav-link:hover::before {
  transform: scaleX(1);
}

.pn-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.pn-title {
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--text);
}

.pn-next {
  text-align: right;
}

/* ---------- 键盘焦点可见 ---------- */
.crumb a:focus-visible,
.filter-btn:focus-visible,
.post-card h3 a:focus-visible,
.related-card h3 a:focus-visible,
.post-nav-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--r-sm);
}

/* ---------- 窄屏适配 ---------- */
@media (max-width: 640px) {
  :root {
    --read-pad: 1.5rem;
  }

  .blog-hero {
    padding-block: 1.6rem 0.2rem;
  }

  .blog-hero-in::before,
  .article-hero::before {
    width: min(72%, 15rem);
    top: -0.4rem;
    bottom: -0.4rem;
  }

  .blog-hero-in::after,
  .article-hero::after {
    top: -0.6rem;
    font-size: 2.6rem;
    opacity: 0.8;
  }

  .blog-hero h1 {
    font-size: 1.72rem;
  }

  .post-card {
    padding: 1.2rem 1.15rem;
  }

  .article-hero {
    padding-block: 1.7rem 1.3rem;
  }

  .article-hero h1 {
    font-size: 1.56rem;
  }

  .article-body h2 {
    margin-top: 2.2rem;
    padding-left: 2.35rem;
    font-size: 1.32rem;
  }

  .article-body h3 {
    font-size: 1.14rem;
  }

  .article-body .callout {
    padding-left: 2.8rem;
  }

  .article-body .stat-num {
    font-size: 1.5rem;
  }

  .promo-block {
    padding: 1.4rem 1.2rem;
  }

  .pn-next {
    text-align: left;
  }
}

@media (max-width: 400px) {
  .article-body .stat-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .post-card,
  .post-card::before,
  .related-card,
  .related-card::before,
  .post-nav-link,
  .post-nav-link::before,
  .filter-btn,
  .crumb a {
    transition: none;
  }

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

  .related-card:hover::before,
  .post-nav-link:hover::before {
    transform: none;
    opacity: 1;
  }
}