/* 博客列表页与文章页专属样式,所有颜色、字体、圆角均引用设计令牌。 */

/* ---------- 列表页 ---------- */
.blog-hero {
  padding-top: var(--sp-6);
  padding-bottom: var(--sp-4);
}

.blog-title {
  margin: 0 0 1rem;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.02em;
  text-wrap: pretty;
}

.blog-lede {
  max-width: 46rem;
  margin: 0;
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.blog-index {
  padding-top: 0;
}

.blog-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.blog-index-title {
  margin: 0;
  color: var(--text);
  font-size: 1.35rem;
  line-height: 1.3;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}

.blog-count {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
}

.tag-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 1.5rem;
}

.tag-filter {
  appearance: none;
  min-height: 32px;
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  background: var(--bg);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.tag-filter:hover {
  border-color: var(--accent-24);
  color: var(--text);
}

.tag-filter.is-active,
.tag-filter[aria-pressed="true"] {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--bg);
}

.post-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(280px, 100%), 1fr));
  gap: 1rem;
}

.post-card {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  background: var(--bg);
  box-shadow: var(--shadow-1), var(--hi);
  color: var(--text);
  text-decoration: none;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.post-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-24);
  box-shadow: var(--shadow-3), var(--hi);
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
}

.post-tag {
  display: inline-flex;
  align-items: center;
  min-height: 1.5rem;
  padding: 0.1rem 0.55rem;
  border: 1px solid var(--accent-18);
  border-radius: var(--r-pill);
  background: var(--accent-08);
  color: var(--accent-dark);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
}

.post-date {
  color: var(--text-muted);
}

.post-title {
  margin: 0;
  color: var(--text);
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.42;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}

.post-excerpt {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.94rem;
  line-height: 1.7;
}

.post-more {

  margin-top: auto;
  padding-top: 0.35rem;
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
}

.blog-empty {
  margin: 2rem 0;
  padding: 1rem 1.1rem;
  border: 1px dashed var(--border-strong);
  border-radius: var(--r-md);
  background: var(--bg-panel);
  color: var(--text-muted);
  line-height: 1.7;
}

/* ---------- 文章页阅读列 ---------- */
.reading-wrap {
  width: 100%;
  max-width: calc(56rem + var(--gutter) + var(--gutter));
  margin-inline: auto;
  padding-inline: var(--gutter);
  --article-pad: 1.75rem;
}

.breadcrumb {
  margin-top: 1.5rem;
  margin-bottom: 1rem;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 0.4rem;
  color: var(--sep);
}

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

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

/* ---------- 文章 hero:window-chrome 窗口栏卡片 ---------- */
.article-hero {
  position: relative;
  overflow: hidden;
  margin-bottom: 1.5rem;
  padding: calc(2.6rem + 1.5rem) var(--article-pad, 1.75rem) 1.75rem;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  background: var(--bg);
  box-shadow: var(--shadow-1), var(--hi);
}

.article-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2.6rem;
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(circle at 1.2rem 1.3rem, var(--error) 0 0.26rem, transparent 0.28rem),
    radial-gradient(circle at 2.15rem 1.3rem, var(--warn) 0 0.26rem, transparent 0.28rem),
    radial-gradient(circle at 3.1rem 1.3rem, var(--success) 0 0.26rem, transparent 0.28rem),
    linear-gradient(180deg, var(--bg-panel-2), var(--bg-panel));
  pointer-events: none;
}

.article-hero::after {
  content: "VPNVO · 阅读笔记";
  position: absolute;
  top: 0;
  right: var(--article-pad, 1.75rem);
  display: flex;
  align-items: center;
  height: 2.6rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  pointer-events: none;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
}

.article-meta > * {
  display: inline-flex;
  align-items: center;
  min-height: 1.75rem;
  padding: 0.15rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  background: var(--bg-panel);
}

.article-meta .post-tag,
.article-meta .article-tag {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--bg);
}

.article-hero h1 {
  margin: 0 0 1rem;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: clamp(1.75rem, 4vw, 2.6rem);
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -0.02em;
  text-wrap: pretty;
}

.article-summary,
.article-hero .lede {
  max-width: 46rem;
  margin: 0;
  color: var(--text-muted);
  font-size: 1.02rem;
  line-height: 1.7;
}

/* ---------- 文章正文 ---------- */
:is(.article-body, .prose) {
  counter-reset: section;
  padding-top: 0;
  padding-inline: var(--article-pad, 1.75rem);
  color: var(--text);
  font-size: 1rem;
  line-height: 1.8;
  overflow-wrap: break-word;
}

:is(.article-body, .prose) > *:first-child {
  margin-top: 0;
}

:is(.article-body, .prose) h2 {
  counter-increment: section;
  margin: 2.4em 0 0.8em;
  color: var(--text);
  font-size: clamp(1.3rem, 2.4vw, 1.6rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}

:is(.article-body, .prose) h2::before {
  content: counter(section, decimal-leading-zero);
  display: inline-block;
  margin-right: 0.6em;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.7em;
  font-weight: 700;
  letter-spacing: 0;
  vertical-align: 0.08em;
}

:is(.article-body, .prose) h3 {
  margin: 1.8em 0 0.6em;
  color: var(--text);
  font-size: clamp(1.1rem, 1.8vw, 1.3rem);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.005em;
  text-wrap: pretty;
}

:is(.article-body, .prose) h3::before {
  content: "";
  display: inline-block;
  width: 0.55em;
  height: 0.18em;
  margin-right: 0.5em;
  border-radius: var(--r-pill);
  background: var(--accent);
  vertical-align: middle;
}

:is(.article-body, .prose) p {
  margin: 0 0 1.15em;
}

:is(.article-body, .prose) ul,
:is(.article-body, .prose) ol {
  margin: 0 0 1.2em;
  padding-left: 1.35em;
}

:is(.article-body, .prose) li {
  margin: 0.35em 0;
}

:is(.article-body, .prose) li > p {
  margin-bottom: 0.4em;
}

:is(.article-body, .prose) a {
  color: var(--accent-dark);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

:is(.article-body, .prose) a:hover {
  color: var(--accent);
}

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

:is(.article-body, .prose) blockquote {
  margin: 1.5em 0;
  padding: 1rem 1.2rem;
  border-left: 3px solid var(--border-strong);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: var(--bg-panel);
  color: var(--text-muted);
  line-height: 1.75;
}

:is(.article-body, .prose) hr {
  margin: 2rem 0;
  border: 0;
  border-top: 1px solid var(--border);
}

:is(.article-body, .prose) img {
  max-width: 100%;
  height: auto;
  border-radius: var(--r-sm);
}

/* 表格:实色表头 + 斑马纹 + hover,窄屏横滑 */
:is(.article-body, .prose) .table-scroll {
  max-width: 100%;
  margin: 1.5em 0;
  overflow-x: auto;
}

:is(.article-body, .prose) .table-scroll table {
  margin: 0;
  min-width: 520px;
}

:is(.article-body, .prose) table {
  width: 100%;
  margin: 1.5em 0;
  border-collapse: collapse;
  font-size: 0.92rem;
  line-height: 1.6;
}

:is(.article-body, .prose) thead th {
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--bg);
  font-weight: 600;
  text-align: left;
}

:is(.article-body, .prose) td,
:is(.article-body, .prose) th {
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border);
  vertical-align: top;
}

:is(.article-body, .prose) tbody tr:nth-child(2n) {
  background: var(--bg-panel);
}

:is(.article-body, .prose) tbody tr:hover {
  background: var(--bg-panel-2);
}

/* 代码:终端窗 + 行内代码 */
:is(.article-body, .prose) pre {
  position: relative;
  margin: 1.5em 0;
  padding: 2.6rem 1.1rem 1.1rem;
  border-radius: var(--r-md);
  background:;
  background: var(--ink);
  color: var(--white-90);
 
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.65;
  overflow-x: auto;
}

:is(.article-body, .prose) pre::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2rem;
  border-bottom: 1px solid var(--white-25);
  background:
    radial-gradient(circle at 1rem 0.95rem, var(--error) 0 0.22rem, transparent 0.24rem),
    radial-gradient(circle at 1.9rem 0.95rem, var(--warn) 0 0.22rem, transparent 0.24rem),
    radial-gradient(circle at 2.8rem 0.95rem, var(--success) 0 0.22rem, transparent 0.24rem),
    linear-gradient(180deg, var(--accent-18), transparent);
  pointer-events: none;
}

:is(.article-body, .prose) pre code {
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font-size: inherit;
}

:is(.article-body, .prose) :not(pre) > code {
  padding: 0.1em 0.35em;
  border: 1px solid var(--border);
  border-radius: var(--r-xs);
  background: var(--bg-panel-2);
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: 0.9em;
  overflow-wrap: anywhere;
}

/* 提示块 */
:is(.article-body, .prose) .callout {
  position: relative;
  margin: 1.5em 0;
  padding: 1rem 1.1rem 1rem 2.9rem;
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: var(--bg-panel);
  background: color-mix(in srgb, var(--accent) 6%, var(--bg));
  line-height: 1.7;
}

:is(.article-body, .prose) .callout::before {
  content: "i";
  position: absolute;
  top: 1rem;
  left: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.25rem;
  height: 1.25rem;
  border-radius: var(--r-pill);
  background: var(--accent);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
}

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

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

:is(.article-body, .prose) .callout--ok {
  border-left-color: var(--success);
  background: var(--bg-panel);
  background: color-mix(in srgb, var(--success) 8%, var(--bg));
}

:is(.article-body, .prose) .callout--ok::before {
  content: "i";
  background: var(--success);
}

:is(.article-body, .prose) .callout--plain {
  border-left-color: var(--border-strong);
  background: var(--bg-panel);
}

:is(.article-body, .prose) .callout--plain::before {
  background: var(--text-muted);
}

/* 数据卡 */
:is(.article-body, .prose) .stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.75rem;
  margin: 1.5em 0;
  padding: 0;
  list-style: none;
}

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

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

:is(.article-body, .prose) .stat-card:nth-child(2n) {
  background: var(--bg-panel-2);
}

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

:is(.article-body, .prose) .stat-num {
  display: block;
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

:is(.article-body, .prose) .stat-label {
  display: block;
  margin-top: 0.3rem;
  color: var(--text-muted);
  font-size: 0.8rem;
  line-height: 1.5;
}

/* 勾叉清单:只做容器与行卡装饰,不注入任何勾叉标记 */
:is(.article-body, .prose) .check-list {
  display: grid;
  gap: 0.5rem;
  margin: 1.4em 0;
  padding: 0;
  list-style: none;
}

:is(.article-body, .prose) .check-list > li {
  margin: 0;
  padding: 0.75rem 0.95rem;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--bg-panel);
  line-height: 1.65;
  list-style: none;
}

/* 结论块 */
:is(.article-body, .prose) .verdict {
  margin: 1.6em 0;
  padding: 1rem 1.1rem;
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: var(--bg-panel);
  background: color-mix(in srgb, var(--accent) 6%, var(--bg));
  line-height: 1.7;
}

:is(.article-body, .prose) .verdict strong:first-child {
  color: var(--accent-dark);
}

/* ---------- 文末推广卡 ---------- */
.promo-block {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  margin: 2.5rem 0 0;
  padding: 1.5rem;
  border-radius: var(--r-lg);
  background: linear-gradient(135deg, var(--accent-dark), var(--accent));
  box-shadow: var(--shadow-2), var(--hi);
  overflow: hidden;
}

.promo-block::before {
  content: "";
  position: absolute;
  top: -3rem;
  right: -3rem;
  width: 12rem;
  height: 12rem;
  border-radius: var(--r-pill);
  background: radial-gradient(circle, var(--accent-35), transparent 70%);
  pointer-events: none;
}

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

.promo-text {
  min-width: 0;
}

.promo-brand {
  margin: 0 0 0.35rem;
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.promo-line {
  margin: 0 0 0.25rem;
  color: var(--white-90);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5;
}

.promo-sub {
  margin: 0;
  color: var(--white-72);
  font-size: 0.84rem;
  line-height: 1.6;
}

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

.promo-block .btn-primary:hover {
  border-color: var(--bg-panel-2);
  background: var(--bg-panel-2);
  color: var(--accent-dark);
}

.promo-block .btn-ghost {
  border-color: var(--white-60);
  background: transparent;
  color: var(--bg);
}

.promo-block .btn-ghost:hover {
  background: var(--white-25);
  color: var(--bg);
}

/* ---------- 延伸阅读 ---------- */
#related-posts {
  padding-top: 2rem;
  padding-bottom: 1.5rem;
}

.related-heading {
  margin: 0 0 0.9rem;
  color: var(--text);
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr));
  gap: 0.75rem;
}

.related-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--bg);
  box-shadow: var(--shadow-1), var(--hi);
  color: var(--text);
  text-decoration: none;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.related-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  border-radius: var(--r-md) var(--r-md) 0 0;
  background: transparent;
  transition: background 0.18s ease;
}

.related-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-24);
  box-shadow: var(--shadow-3), var(--hi);
}

.related-card:hover::before {
  background: var(--);
  background: var(--accent);
}

.related-tag {
  align-self: flex-start;
  padding: 0.1rem 0.5rem;
  border: 1px solid var(--accent-18);
  border-radius: var(--r-pill);
  background: var(--accent-08);
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
}

.related-title {
  color: var(--text);
  font-size: 0.94rem;
  font-weight: 600;
  line-height: 1.5;
}

.related-date {
  margin-top: auto;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
}

/* ---------- 上一篇 / 下一篇 ---------- */
#post-nav {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(240px, 100%), 1fr));
  gap: 0.75rem;
  padding-top: 1.5rem;
  padding-bottom: 2rem;
}

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

.post-nav-link:hover {
  transform: translateY(-2px);
  border-color: var(--accent-24);
  box-shadow: var(--shadow-3), var(--hi);
}

.post-nav-label {
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
}

.post-nav-title {
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.45;
}

.post-nav-date {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
}

/* ---------- 文章页悬浮 CTA(列表页不渲染) ---------- */
.float-cta {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 60;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  max-width: calc(100vw - 1.5rem);
  padding: 0.65rem 1.05rem;
  border: 1px solid var(--accent-dark);
  border-radius: var(--r-pill);
  background: var(--accent);
  box-shadow: var(--shadow-2);
  color: var(--bg);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.float-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-3);
}

.float-cta svg {
  flex: none;
  width: 1.05rem;
  height: 1.05rem;
}

.float-cta span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---------- 响应式 ---------- */
@media (max-width: 860px) {
  :is(.article-body, .prose) table {
    display: block;
    width: fit-content;
    max-width: 100%;
    overflow-x: auto;
  }
}

@media (max-width: 640px) {
  .reading-wrap {
    --article-pad: 1.5rem;
  }

  .blog-hero {
    padding-top: var(--sp-5);
  }

  .blog-title {
    font-size: clamp(1.9rem, 9vw, 2.4rem);
  }

  .blog-lede {
    font-size: 1rem;
  }

  .tag-filters {
    gap: 0.4rem;
  }

  .post-card {
    padding: 1.1rem;
  }

  .article-hero::after {
    display: none;
  }

  .article-hero h1 {
    font-size: clamp(1.65rem, 8vw, 2.1rem);
  }

  .promo-block {
    flex-direction: column;
    align-items: flex-start;
    padding: 1.25rem;
  }

  .float-cta {
    right: 0.75rem;
    bottom: 0.75rem;
    padding: 0.55rem 0.85rem;
    font-size: 0.8rem;
  }
}

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

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