/* VPNOh · 博客样式包(列表页 + 文章页)
   颜色 / 字体 / 圆角一律引用 :root 设计令牌,不散落硬编码色值 */

:root{
  --blog-reading: 56rem;
  --blog-pad: clamp(1.5rem, 4vw, 2.5rem);
  --blog-col: calc(var(--blog-reading) + 2 * var(--blog-pad));
  --blog-r-xs: 4px;
  --blog-on-accent: var(--bg-panel);
  --blog-accent-08: rgba(var(--accent-rgb), .08);
  --blog-accent-16: rgba(var(--accent-rgb), .16);
  --blog-accent-32: rgba(var(--accent-rgb), .32);
  --blog-scrim: color-mix(in srgb, var(--text) 62%, transparent);
  --blog-tint-soft: color-mix(in srgb, var(--bg-panel-2) 55%, transparent);
  --blog-term-bg: var(--text);
  --blog-term-fg: var(--bg-panel);
  --blog-term-edge: color-mix(in srgb, var(--text) 78%, var(--bg-panel));
}

/* ---------- 版心:列表页与文章页共用同一条列 ---------- */

.blog-col,
.crumbs,
.article-hero,
.reading-wrap,
#related-posts,
#post-nav{
  width: 100%;
  max-width: var(--blog-col);
  margin-inline: auto;
  padding-inline: var(--blog-pad);
}

/* 嵌套在 .reading-wrap 内时,卡片外扩到列的外缘,内衬保持不变,h1 与正文左缘对齐 */
.reading-wrap .article-hero,
.reading-wrap .promo-block{
  max-width: none;
  margin-inline: calc(-1 * var(--blog-pad));
  padding-inline: var(--blog-pad);
}

/* 正文列与 hero 同宽:解除 78ch 上限,避免正文被居中后与标题左缘错位 */
.reading-wrap .prose{
  max-width: none;
}

.reading-wrap #related-posts,
.reading-wrap #post-nav{
  max-width: none;
  padding-inline: 0;
}

/* ---------- 列表页 Hero ---------- */

.blog-hero{
  padding-block: clamp(1.75rem, 4.5vw, 3rem) clamp(1.25rem, 3vw, 2rem);
}

.blog-hero h1{
  margin-top: var(--sp-3);
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 4.6vw, 3rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--text);
  text-wrap: pretty;
}

.blog-hero-lede{
  max-width: 44rem;
  margin-top: var(--sp-4);
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text-muted);
}

/* ---------- 标签筛选 ---------- */

.tag-filter{
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-5);
}

.tag-filter [hidden]{
  display: none;
}

.tag-chip{
  padding: .58rem .95rem;
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  line-height: 1;
  color: var(--text-muted);
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: color .2s ease, border-color .2s ease, background-color .2s ease;
}

.tag-chip:hover{
  color: var(--text);
  border-color: var(--blog-accent-32);
}

.tag-chip.is-active{
  color: var(--blog-on-accent);
  background: var(--accent);
  border-color: var(--accent);
}

.tag-chip:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- 列表页:计数条 + 卡片网格 ---------- */

.blog-list-sec{
  padding-block: var(--sp-4) var(--sp-8);
}

.list-bar{
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  align-items: baseline;
  justify-content: space-between;
  padding-bottom: var(--sp-3);
  border-bottom: 1px solid var(--border);
}

.list-count{
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--text);
}

.list-order{
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--text-muted);
}

.post-list{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: var(--sp-5);
  margin-top: var(--sp-5);
}

.list-empty{
  margin-top: var(--sp-5);
  padding: var(--sp-5);
  font-size: .95rem;
  line-height: 1.8;
  color: var(--text-muted);
  background: var(--bg-panel);
  border: 1px dashed var(--border);
  border-radius: var(--r-md);
}

.post-card{
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  padding: clamp(1.25rem, 3vw, 1.6rem);
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-soft);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}

.post-card:hover{
  transform: translateY(-3px);
  border-color: var(--blog-accent-32);
  box-shadow: var(--shadow-card);
}

.post-card .post-meta{
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  align-items: center;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
}

.post-card .tag,
.rel-card .tag,
.article-meta .tag{
  color: var(--blog-on-accent);
  background: var(--accent);
  border-color: var(--accent);
  font-weight: 700;
}

.post-card h3{
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 1.7vw, 1.22rem);
  font-weight: 800;
  line-height: 1.45;
  letter-spacing: -.01em;
  text-wrap: pretty;
}

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

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

.post-sum{
  margin: 0;
  font-size: .94rem;
  line-height: 1.8;
  color: var(--text-muted);
}

.post-more{
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .03em;
  color: var(--accent);
  text-decoration: none;
}

.post-more:hover{
  color: var(--accent-dark);
}

/* ---------- 文章页:面包屑 ---------- */

.crumbs{
  padding-top: 1.5rem;
  padding-bottom: .35rem;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-muted);
}

.crumbs ol,
.crumbs ul{
  display: flex;
  flex-wrap: wrap;
  gap: .35rem .55rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.crumbs li{
  display: inline-flex;
  align-items: center;
  gap: .55rem;
}

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

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

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

/* ---------- 文章页 Hero:图章角标卡 ---------- */

.article-hero{
  position: relative;
  margin-top: .75rem;
  padding-block: clamp(4.5rem, 9vw, 5.5rem) clamp(1.75rem, 4vw, 2.25rem);
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-soft);
}

.stamp{
  position: absolute;
  top: clamp(1rem, 2.5vw, 1.4rem);
  right: clamp(1rem, 2.5vw, 1.4rem);
  display: grid;
  place-items: center;
  width: clamp(64px, 8vw, 92px);
  aspect-ratio: 1 / 1;
  color: var(--accent);
  background: var(--blog-accent-08);
  border: 1px solid var(--blog-accent-32);
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: clamp(9px, 1.1vw, 11px);
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  transform: rotate(-10deg);
  pointer-events: none;
}

.stamp::before{
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid var(--blog-accent-32);
  border-radius: inherit;
}

.article-meta{
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2) var(--sp-3);
  align-items: center;
  justify-content: flex-start;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
}

.article-meta time,
.article-meta .meta-pill{
  padding: .34rem .7rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
}

.article-hero h1{
  margin-top: var(--sp-4);
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--text);
  text-wrap: pretty;
}

.article-summary{
  max-width: 46rem;
  margin-top: var(--sp-4);
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text-muted);
}

/* ---------- 文章正文 ---------- */

.reading-wrap{
  padding-block: clamp(1.75rem, 4vw, 2.5rem) 0;
}

.prose{
  counter-reset: blog-sec;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text);
  margin-inline: auto;
}

/* 正文列居中兜底:模板未包居中层时也保持水平居中;长串不撑破列宽 */
main > .reading-wrap,
main > .blog-col{
  margin-inline: auto;
}
.prose p,
.prose li,
.prose code,
.prose a{
  overflow-wrap: anywhere;
}
.prose pre{
  max-width: 100%;
  overflow-x: auto;
}

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

.prose > :last-child{
  margin-bottom: 0;
}

.prose > * + *{
  margin-top: 1.1em;
}

.prose h2{
  counter-increment: blog-sec;
  margin-top: 2.5em;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.2vw, 1.6rem);
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--text);
  text-wrap: pretty;
}

.prose h2::before{
  content: counter(blog-sec, decimal-leading-zero);
  margin-right: .6em;
  font-family: var(--font-mono);
  font-size: .62em;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--accent);
  vertical-align: .1em;
}

.prose h3{
  margin-top: 1.9em;
  font-family: var(--font-display);
  font-size: clamp(1.08rem, 1.7vw, 1.3rem);
  font-weight: 800;
  line-height: 1.45;
  letter-spacing: -.005em;
  color: var(--text);
  text-wrap: pretty;
}

.prose h4{
  margin-top: 1.6em;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

.prose p{
  margin: 0;
}

.prose ul,
.prose ol{
  margin: 0;
  padding-left: 1.35em;
}

.prose li + li{
  margin-top: .4em;
}

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

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

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

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

.prose blockquote{
  margin: 1.6em 0;
  padding: var(--sp-4) var(--sp-5);
  color: var(--text);
  background: var(--blog-accent-08);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
}

.prose blockquote p + p{
  margin-top: .7em;
}

.prose hr{
  margin: 2.2em 0;
  border: 0;
  border-top: 1px dashed var(--border);
}

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

.prose code{
  font-family: var(--font-mono);
  font-size: .88em;
  padding: .12em .4em;
  color: var(--text);
  background: var(--bg-panel-2);
  border-radius: var(--blog-r-xs);
  overflow-wrap: anywhere;
}

.prose pre{
  position: relative;
  margin: 1.6em 0;
  padding: 2.5rem 1.15rem 1.15rem;
  overflow-x: auto;
  color: var(--blog-term-fg);
  background: var(--blog-term-bg);
  border: 1px solid var(--blog-term-edge);
  border-radius: var(--r-md);
  font-family: var(--font-mono);
  font-size: .85rem;
  line-height: 1.7;
}

.prose pre::before{
  content: "";
  position: absolute;
  top: .95rem;
  left: 1.15rem;
  width: 9px;
  height: 9px;
  background: var(--error);
  border-radius: var(--r-pill);
  box-shadow: 16px 0 0 var(--warn), 32px 0 0 var(--success);
}

.prose pre code{
  padding: 0;
  color: inherit;
  background: none;
  border: 0;
  font-size: inherit;
}

.prose table{
  width: 100%;
  margin: 1.6em 0;
  border: 1px solid var(--border);
  border-collapse: collapse;
  font-size: .92rem;
  line-height: 1.7;
}

.prose th,
.prose td{
  padding: .68rem .8rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.prose thead th{
  color: var(--bg-panel);
  background: var(--text);
  border-bottom: 0;
  font-weight: 700;
  white-space: nowrap;
}

.prose tbody tr:nth-child(even){
  background: var(--blog-tint-soft);
}

.prose tbody tr:hover{
  background: var(--blog-accent-08);
}

/* ---------- 正文富文本组件 ---------- */

.stat-grid{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 180px), 1fr));
  gap: var(--sp-4);
  margin: 1.7em 0;
}

.stat-card{
  position: relative;
  padding: 1.2rem 1.15rem 1.25rem;
  overflow: hidden;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
}

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

.stat-card .stat-num{
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3vw, 1.85rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.stat-card .stat-label{
  display: block;
  margin-top: .4rem;
  font-size: .82rem;
  line-height: 1.65;
  color: var(--text-muted);
}

.stat-card.is-green::before{
  background: var(--success);
}

.stat-card.is-amber::before{
  background: var(--warn);
}

.stat-card.is-red::before{
  background: var(--error);
}

.stat-card.is-tint{
  background: var(--blog-accent-08);
  border-color: var(--blog-accent-16);
}

.check-list{
  display: grid;
  gap: var(--sp-2);
  margin: 1.6em 0;
  padding: 0;
  list-style: none;
}

.check-list li{
  padding: .72rem .95rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-left: 3px solid var(--blog-accent-32);
  border-radius: var(--r-sm);
  line-height: 1.75;
}

.verdict{
  margin: 1.7em 0;
  padding: var(--sp-4) var(--sp-5);
  background: var(--blog-accent-08);
  border: 1px solid var(--blog-accent-16);
  border-left: 4px solid var(--accent);
  border-radius: var(--r-sm);
  line-height: 1.8;
}

.verdict > strong:first-child{
  color: var(--accent);
  font-weight: 800;
}

.callout{
  display: flex;
  gap: var(--sp-4);
  align-items: flex-start;
  margin: 1.7em 0;
  padding: var(--sp-4) var(--sp-5);
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--r-sm);
  line-height: 1.8;
}

.callout::before{
  content: "i";
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  margin-top: .15rem;
  color: var(--text);
  background: var(--blog-accent-16);
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: .85rem;
  font-weight: 700;
}

.callout:has(svg)::before{
  display: none;
}

.callout p{
  margin: 0;
}

.callout p + p{
  margin-top: .6em;
}

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

.callout.is-warn::before,
.callout.is-warning::before{
  content: "!";
  background: color-mix(in srgb, var(--warn) 26%, var(--bg-panel));
}

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

.callout.is-safe::before,
.callout.is-success::before{
  content: "✓";
  background: color-mix(in srgb, var(--success) 24%, var(--bg-panel));
}

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

.callout.is-danger::before,
.callout.is-error::before{
  content: "×";
  background: color-mix(in srgb, var(--error) 24%, var(--bg-panel));
}

/* ---------- 文末推广卡 ---------- */

.promo-block{
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-5);
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--blog-col);
  margin-inline: auto;
  margin-top: var(--sp-7);
  padding-block: clamp(1.5rem, 4vw, 2.25rem);
  padding-inline: clamp(1.5rem, 3vw, 2rem);
  overflow: hidden;
  color: var(--blog-on-accent);
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-card);
}

.promo-block::before{
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(115deg, rgba(var(--accent-rgb), 0) 0 22px, color-mix(in srgb, var(--bg-panel) 8%, transparent) 22px 23px);
  pointer-events: none;
}

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

.promo-text{
  flex: 1 1 20rem;
}

.promo-block h3{
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2vw, 1.35rem);
  font-weight: 800;
  line-height: 1.35;
  color: var(--blog-on-accent);
  text-wrap: pretty;
}

.promo-block p{
  margin-top: .45rem;
  font-size: .95rem;
  line-height: 1.8;
  color: color-mix(in srgb, var(--bg-panel) 84%, var(--accent));
}

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

.promo-block .btn-ghost{
  color: var(--blog-on-accent);
  background: transparent;
  border-color: color-mix(in srgb, var(--bg-panel) 55%, transparent);
}

/* ---------- 延伸阅读 / 上一篇下一篇 ---------- */

#related-posts{
  margin-top: var(--sp-6);
  padding-top: var(--sp-6);
  border-top: 1px solid var(--border);
}

#post-nav{
  margin-top: var(--sp-7);
}

#related-posts:empty,
#post-nav:empty{
  display: none;
}

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

#related-posts h2{
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -.005em;
  color: var(--text);
  text-wrap: pretty;
}

.rel-list{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr));
  gap: var(--sp-4);
  margin-top: var(--sp-4);
}

.rel-card{
  position: relative;
  display: block;
  padding: 1.1rem 1.15rem;
  overflow: hidden;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  text-decoration: none;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}

.rel-card::before{
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .25s ease;
}

.rel-card:hover{
  transform: translateY(-2px);
  border-color: var(--blog-accent-32);
  box-shadow: var(--shadow-soft);
}

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

.rel-card .rel-meta{
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  align-items: center;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-muted);
}

.rel-card h3{
  margin-top: var(--sp-3);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.5;
  color: var(--text);
  text-wrap: pretty;
}

.rel-card p{
  margin-top: .5rem;
  font-size: .88rem;
  line-height: 1.75;
  color: var(--text-muted);
}

.nav-grid{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: var(--sp-4);
}

.nav-card{
  display: block;
  padding: 1rem 1.15rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  text-decoration: none;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}

.nav-card:hover{
  transform: translateY(-2px);
  border-color: var(--blog-accent-32);
  box-shadow: var(--shadow-soft);
}

.nav-card .nav-dir{
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--accent);
}

.nav-card .nav-title{
  display: block;
  margin-top: .45rem;
  font-size: .95rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--text);
}

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

/* ---------- 文末注册引导弹窗 ---------- */

.signup-modal{
  position: fixed;
  inset: 0;
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--gutter);
}

.signup-modal[hidden]{
  display: none;
}

.signup-modal-backdrop{
  position: absolute;
  inset: 0;
  background: var(--blog-scrim);
  opacity: 0;
  transition: opacity .22s ease;
}

.signup-modal-panel{
  position: relative;
  width: 100%;
  max-width: 27rem;
  padding: clamp(1.5rem, 4vw, 2rem);
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-lift);
  opacity: 0;
  transform: translateY(10px) scale(.98);
  transition: opacity .22s ease, transform .22s ease;
}

.signup-modal.is-open .signup-modal-backdrop{
  opacity: 1;
}

.signup-modal.is-open .signup-modal-panel{
  opacity: 1;
  transform: none;
}

.signup-modal-close{
  position: absolute;
  top: .75rem;
  right: .75rem;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1;
  color: var(--text-muted);
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: color .2s ease, border-color .2s ease;
}

.signup-modal-close:hover{
  color: var(--accent);
  border-color: var(--blog-accent-32);
}

.signup-modal-close:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.signup-modal-brand{
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent);
}

.signup-modal-title{
  margin-top: var(--sp-3);
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 3vw, 1.45rem);
  font-weight: 900;
  line-height: 1.35;
  letter-spacing: -.02em;
  color: var(--text);
  text-wrap: pretty;
}

.signup-modal-text{
  margin-top: var(--sp-3);
  font-size: .95rem;
  line-height: 1.8;
  color: var(--text-muted);
}

.signup-modal-actions{
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  margin-top: var(--sp-5);
}

/* ---------- 窄屏与降级 ---------- */

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

@media (max-width: 640px){
  .no-break{
    white-space: normal;
  }

  .article-hero{
    padding-block: 4.25rem clamp(1.5rem, 5vw, 2rem);
  }

  .stamp{
    width: 60px;
    font-size: 9px;
  }

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

  .promo-block{
    justify-content: flex-start;
  }
}

@media (prefers-reduced-motion: reduce){
  .post-card,
  .rel-card,
  .nav-card,
  .tag-chip,
  .signup-modal-backdrop,
  .signup-modal-panel{
    transition: none;
  }

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

  .signup-modal-panel{
    transform: none;
  }
}