/* VPNEQ 博客样式包：列表页 + 文章页，全部派生自设计令牌 */

/* ---------- 阅读列：显式覆盖 base.css 的 --content-reading 卡死值 ---------- */
main .reading-wrap,
.reading-wrap {
  width: 100%;
  max-width: calc(56rem + 2 * var(--gutter));
  margin-inline: auto;
  padding-inline: var(--gutter);
  box-sizing: border-box;
}

/* ---------- 列表页 hero（杂志刊头线母题） ---------- */
.blog-hero {
  padding-block: clamp(2.25rem, 5vw, 3.5rem) clamp(1.25rem, 3vw, 2rem);
}

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

.blog-hero .wrap::before {
  content: "";
  display: block;
  height: 4px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--text) 0 38%, var(--accent) 38% 100%);
  margin-bottom: 1.5rem;
}

.blog-kicker {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  margin: 0 0 .85rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent-dark);
}

.blog-kicker::before {
  content: "";
  width: .5rem;
  height: .5rem;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

.blog-hero h1 {
  margin: 0 0 .9rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 4.6vw, 3rem);
  line-height: 1.14;
  letter-spacing: -.015em;
  color: var(--text);
  text-wrap: pretty;
}

.blog-lead {
  max-width: 44rem;
  margin: 0 0 .9rem;
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--text-muted);
}

.blog-hero-note {
  margin: 0;
  font-size: .92rem;
}

.blog-hero-note a {
  color: var(--accent-dark);
  font-weight: 600;
;
  text-decoration: none;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 1px;
}

.blog-hero-note a:hover {
  color: var(--text);
}

/* ---------- 列表页主体 ---------- */
.blog-list-section {
  padding-bottom: clamp(3rem, 6vw, 4.5rem);
}

.blog-list-heading {
  margin: 0 0 1.1rem;
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
  text-wrap: pretty;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
  margin: 0 0 1.9rem;
}

.filter-btn {
  font-family: var(--font-body);
  font-size: .9rem;
  line-height: 1.2;
  padding: .5rem 1.05rem;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  background: var(--bg-panel);
  color: var(--text-muted);
  cursor: pointer;
  transition: border-color .18s ease, color .18s ease, background-color .18s ease, box-shadow .18s ease;
}

.filter-btn:hover {
  border-color: var(--accent);
  color: var(--text);
}

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

.filter-btn.is-on {
  border-color: var(--accent);
  background: var(--accent-tint);
  color: var(--text);
  font-weight: 600;
  box-shadow: inset 0 0 0 1px var(--accent);
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(19rem, 1fr));
  gap: 1.25rem;
}

.post-card {
  display: flex;
  flex-direction: column;
  gap: .65rem;
  padding: 1.35rem 1.4rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-card);
  text-decoration: none;
  color: var(--text);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease, background-color .2s ease;
}

/* 动态插入的卡片自带 shown：显式保证可见，不依赖滚动观察器 */
.post-card.reveal,
.post-card.reveal.shown {
  opacity: 1;
  visibility: visible;
  transform: none;
}

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

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

.post-card .post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .6rem;
}

.post-card .post-meta .tag {
  font-size: .76rem;
  letter-spacing: .02em;
}

.post-card .post-date {
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--text-muted);
}

.post-card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -.005em;
  color: var(--text);
  text-wrap: pretty;
}

.post-card p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.8;
  color: var(--text-muted);
}

.post-card .post-more {
  margin-top: auto;
  padding-top: .5rem;
  font-size: .88rem;
  font-weight: 600;
  color: var(--accent-dark);
}

.post-empty {
  margin: 0;
  padding: 2.25rem 1.25rem;
  border: 1px dashed var(--border);
  border-radius: var(--r-md);
  background: var(--bg-panel);
  text-align: center;
  color: var(--text-muted);
  font-size: .95rem;
}

/* ---------- 文章页面包屑（与页头留呼吸空间） ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem;
  margin-top: 1.6rem;
  padding-top: .4rem;
  font-size: .875rem;
  line-height: 1.6;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}

.breadcrumb a:hover {
  color: var(--accent-dark);
  border-bottom-color: var(--accent);
}

.breadcrumb .sep {
  color: var(--border);
}

.breadcrumb .current {
  color: var(--text);
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---------- 文章 hero：magazine-rule 杂志头版 ---------- */
.article-hero {
  padding-block: .25rem 1.6rem;
  margin-bottom: 1.9rem;
  border-bottom: 1px solid var(--border-soft);
}

.article-hero::before {
  content: "";
  display: block;
  height: 4px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--text) 0 38%, var(--accent) 38% 100%);
  margin-bottom: 1.35rem;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .55rem;
  margin: 0 0 1.05rem;
  font-size: .85rem;
  color: var(--text-muted);
}

.article-meta .tag {
  background: var(--text);
  color: var(--bg-panel);
  border-color: var(--text);
  font-size: .78rem;
  font-weight: 600;
}

.article-meta .meta-pill {
  display: inline-flex;
  align-items: center;
  padding: .24rem .72rem;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  background: var(--bg-panel);
  font-family: var(--font-mono);
  font-size: .78rem;
  line-height: 1.5;
  color: var(--text-muted);
}

.article-hero h1 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.7rem, 3.4vw, 2.6rem);
  line-height: 1.22;
  letter-spacing: -.015em;
  color: var(--text);
  text-wrap: pretty;
}

.article-summary {
  margin: 0;
  font-size: 1.04rem;
  line-height: 1.9;
  color: var(--text-muted);
  text-wrap: pretty;
}

/* ---------- 正文排版 ---------- */
.article-body {
  counter-reset: section;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--text);
}

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

.article-body p {
  margin: 0 0 1.2rem;
  font-size: 1rem;
  line-height: 1.9;
}

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

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

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

.article-body h2 {
  counter-increment: section;
  margin: 2.6rem 0 1.05rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.3rem, 2.2vw, 1.6rem);
  line-height: 1.42;
  letter-spacing: -.01em;
  color: var(--text);
  text-wrap: pretty;
}

.article-body h2::before {
  content: counter(section, decimal-leading-zero);
  display: inline-block;
  vertical-align: .1em;
  margin-right: .6em;
  padding: .12em .5em;
  border-radius: var(--r-sm);
  background: var(--accent-tint);
  border: 1px solid var(--accent-soft);
  font-family: var(--font-mono);
  font-size: .62em;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--accent-dark);
}

.article-body h3 {
  margin: 1.9rem 0 .75rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.06rem, 1.6vw, 1.3rem);
  line-height: 1.5;
  color: var(--text);
  text-wrap: pretty;
}

.article-body h2 + h3 {
  margin-top: 1.1rem;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.25rem;
  padding-left: 1.4rem;
}

.article-body li {
  margin: .42rem 0;
  line-height: 1.85;
}

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

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

.article-body blockquote {
  margin: 1.6rem 0;
  padding: .95rem 1.3rem;
  border-left: 3px solid var(--text);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: var(--bg-panel);
  color: var(--text-muted);
}

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

/* 表格：实色表头 + 斑马纹 + hover，窄屏横滑不撑破版心 */
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.6rem 0;
  font-size: .94rem;
  line-height: 1.7;
}

.article-body thead th {
  padding: .7rem .9rem;
  background: var(--sidebar);
  color: var(--on-dark);
  text-align: left;
  font-weight: 600;
  white-space: nowrap;
}

.article-body tbody td {
  padding: .68rem .9rem;
  border-bottom: 1px solid var(--border-soft);
  color: var(--text);
}

.article-body tbody tr:nth-child(even) {
  background: var(--bg-panel2);
}

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

/* 终端窗式代码块 */
.article-body pre {
  position: relative;
  margin: 1.6rem 0;
  padding: 2.5rem 1.25rem 1.2rem;
  border-radius: var(--r-md);
  background: var(--sidebar);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: .875rem;
  line-height: 1.75;
  overflow-x: auto;
}

.article-body pre::before {
  content: "";
  position: absolute;
  left: 1.05rem;
  top: 1.05rem;
  width: .6rem;
  height: .6rem;
  border-radius: 50%;
  background: var(--error);
  box-shadow: 1rem 0 0 var(--warn), 2rem 0 0 var(--success);
}

.article-body pre code {
  background: none;
  padding: 0;
  color: inherit;
  font-family: inherit;
  font-size: inherit;
}

.article-body :not(pre) > code {
  padding: .12em .42em;
  border-radius: var(--r-sm);
  background: var(--bg-panel2);
  border: 1px solid var(--border-soft);
  font-family: var(--font-mono);
  font-size: .88em;
  color: var(--text);
}

/* ---------- 正文组件：callout / stat-grid / check-list / verdict ---------- */
.callout {
  position: relative;
  margin: 1.6rem 0;
  padding: 1.05rem 1.3rem 1.05rem 3.1rem;
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  background: var(--bg-panel2);
  color: var(--text);
}

.callout::before {
  content: "i";
  position: absolute;
  left: 1.05rem;
  top: 1.12rem;
  width: 1.3rem;
  height: 1.3rem;
  border-radius: 50%;
  background: var(--accent);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: .8rem;
  font-weight: 700;
  line-height: 1.3rem;
  text-align: center;
}

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

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

.callout.warning::before {
  content: "!";
  background: var(--warn);
  color: var(--bg-panel);
}

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

.callout.success::before {
  content: "✓";
  background: var(--success);
  color: var(--bg-panel);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10.5rem, 1fr));
  gap: 1rem;
  margin: 1.7rem 0;
}

.stat-card {
  position: relative;
  padding: 1.3rem 1.3rem 1.15rem;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--bg-panel);
  overflow: hidden;
}

.stat-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: var(--accent);
}

.stat-card:nth-child(2n) {
  background: var(--bg-panel2);
}

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

.stat-card:nth-child(3n)::before {
  background: var(--success);
}

.stat-num {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.8rem;
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--text);
}

.stat-label {
  display: block;
  margin-top: .35rem;
  font-size: .88rem;
  line-height: 1.7;
  color: var(--text-muted);
}

/* 勾叉清单：只做容器与行卡装饰，不注入任何勾叉语义标记 */
.check-list {
  list-style: none;
  margin: 1.5rem 0;
  padding-left: 0;
  display: grid;
  gap: .6rem;
}

.check-list li {
  margin: 0;
  padding: .72rem 1.05rem;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--r-sm);
  background: var(--bg-panel);
  line-height: 1.8;
}

.check-list li:nth-child(2n) {
  border-left-color: var(--text-muted);
  background: var(--bg-panel2);
}

.verdict {
  position: relative;
  margin: 1.7rem 0;
  padding: 1.15rem 1.35rem 1.15rem 3rem;
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  background: var(--accent-tint);
  color: var(--text);
  line-height: 1.85;
}

.verdict::before {
  content: "";
  position: absolute;
  left: 1.15rem;
  top: 1.5rem;
  width: .7rem;
  height: .7rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

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

/* ---------- 文末推广卡（博客页专属：品牌渐变整版） ---------- */
.post-promo,
.promo-block {
  margin: 2.4rem 0 0;
  padding: 1.9rem 1.75rem;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 140% at 100% 0%, var(--accent-soft) 0%, transparent 58%),
    linear-gradient(135deg, var(--sidebar) 0%, #3A2C1D 100%);
  color: var(--bg);
}

.post-promo .promo-brand,
.promo-block .promo-brand {
  margin: 0 0 .5rem;
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent);
}

.post-promo p,
.promo-block p {
  margin: 0 0 1.1rem;
  font-size: .98rem;
  line-height: 1.85;
  color: rgba(246, 239, 225, .86);
}

.post-promo .promo-actions,
.promo-block .promo-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

.post-promo .btn-primary,
.promo-block .btn-primary {
  background: var(--bg-panel);
  color: var(--text);
  box-shadow: none;
}

.post-promo .btn-primary:hover,
.promo-block .btn-primary:hover {
  background: var(--bg);
  color: var(--text);
}

.post-promo .btn-ghost,
.promo-block .btn-ghost {
  background: transparent;
  border-color: rgba(246, 239, 225, .5);
  color: var(--bg);
}

.post-promo .btn-ghost:hover,
.promo-block .btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ---------- 延伸阅读 / 上一篇下一篇（垫距之和 ≤ 5rem，不叠空洞） ---------- */
#post-nav {
  padding-top: 2rem;
  padding-bottom: 1.5rem;
}

#post-nav:empty {
  padding: 0;
}

#related-posts {
  padding-top: 2.5rem;
  padding-bottom: 1.5rem;
}

#related-posts:empty {
  padding: 0;
}

.post-nav-inner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1rem;
}

.post-nav-card {
  position: relative;
  display: block;
  padding: 1.15rem 1.3rem;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--bg-panel);
  text-decoration: none;
  color: var(--text);
  overflow: hidden;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.post-nav-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .22s ease;
}

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

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

.post-nav-card .dir {
  display: block;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.post-nav-card .t {
  display: block;
  margin-top: .45rem;
  font-size: .98rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
}

.post-nav-card.next {
  text-align: right;
}

.post-nav-card.next::before {
  transform-origin: right center;
}

.related-title {
  margin: 0 0 1.1rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--text);
  text-wrap: pretty;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr));
  gap: 1.1rem;
}

.related-grid .post-card h3 {
  font-size: 1rem;
}

/* ---------- 窄屏：表格横滑，卡片单列 ---------- */
@media (max-width: 860px) {
  .article-body table {
    display: block;
    width: fit-content;
    max-width: 100%;
    overflow-x: auto;
  }

  .article-body thead th,
  .article-body tbody td {
    white-space: nowrap;
  }
}

@media (max-width: 640px) {
  .post-grid,
  .related-grid,
  .post-nav-inner {
    grid-template-columns: 1fr;
  }

  .post-nav-card.next {
    text-align: left;
  }

  .post-nav-card.next::before {
    transform-origin: left center;
  }

  .article-hero h1 {
    font-size: clamp(1.5rem, 6.4vw, 2rem);
  }

  .stat-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 420px) {
  .stat-grid {
    grid-template-columns: 1fr;
  }
}

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

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