:root {
  --blog-reading-width: 56rem;
  --blog-wide-width: 74rem;
  --blog-card-gap: clamp(1rem, 2vw, 1.5rem);
  --blog-copy-size: 1rem;
  --blog-copy-leading: 1.85;
  --blog-stamp-size: clamp(4.5rem, 10vw, 7rem);
  --blog-stamp-angle: -11deg;
  --blog-modal-duration: 180ms;
  --blog-border-width: 1px;
  --blog-accent-tint: color-mix(in srgb, var(--color-accent) 14%, var(--color-panel));
  --blog-line-tint: color-mix(in srgb, var(--color-line) 10%, var(--color-panel));
  --blog-warning-tint: color-mix(in srgb, var(--color-warning) 13%, var(--color-panel));
  --blog-success-tint: color-mix(in srgb, var(--color-success) 13%, var(--color-panel));
  --blog-error-tint: color-mix(in srgb, var(--color-error) 12%, var(--color-panel));
  --blog-overlay: color-mix(in srgb, var(--color-bg) 84%, transparent);
}

.page-blog-index main,
.blog-article {
  min-width: 0;
}

.blog-breadcrumb {
  width: min(var(--blog-reading-width), calc(100% - (var(--gutter) * 2)));
  margin: 1.5rem auto 0;
  padding-top: 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--color-muted);
}

.blog-breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.blog-breadcrumb li:not(:last-child)::after {
  content: "/";
  color: var(--color-line);
}

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

.blog-breadcrumb a:hover {
  color: var(--color-warning);
}

.blog-index-hero,
.article-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  margin: 1.25rem auto 0;
  border: var(--blog-border-width) solid var(--color-line);
  border-radius: var(--radius-panel);
  background:
    linear-gradient(
      135deg,
      var(--color-panel-strong),
      color-mix(in srgb, var(--color-panel) 88%, var(--color-accent))
    );
  box-shadow: var(--shadow-cyan);
}

.blog-index-hero {
  width: min(var(--blog-reading-width), calc(100% - (var(--gutter) * 2)));
  padding: clamp(2rem, 6vw, 4rem) clamp(1.5rem, 5vw, 3.5rem);
}

.article-hero {
  /* (2026-08-20 转人工二修)flush(内衬≥24)与 misaligned(列错位≤16)两条质检的唯一共解:
     hero 给足内衬,正文列同步补同值内衬(见 .article-body),两列文字左缘只差 1px 边框。
     前一轮 agent 的「去左右边框+16px 内衬」半吊子去框方案回滚,恢复整卡设计 */
  width: min(var(--blog-reading-width), calc(100% - (var(--gutter) * 2)));
  padding: clamp(2rem, 6vw, 4rem) clamp(1.75rem, 3vw, 2.5rem);
}

.blog-index-hero::after,
.article-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  z-index: -1;
  height: var(--blog-border-width);
  background: var(--color-warning);
}

.blog-stamp,
.article-hero::before {
  position: absolute;
  top: clamp(1.25rem, 4vw, 2.25rem);
  right: clamp(1.25rem, 4vw, 2.5rem);
  width: var(--blog-stamp-size);
  aspect-ratio: 1;
  border: calc(var(--blog-border-width) * 2) solid var(--color-warning);
  border-radius: 50%;
  color: var(--color-warning);
  transform: rotate(var(--blog-stamp-angle));
  opacity: 0.88;
  pointer-events: none;
}

.article-hero::before {
  content: "JV";
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 4vw, 2.3rem);
  font-weight: 900;
  letter-spacing: 0.08em;
}

.blog-stamp::before,
.article-hero .article-hero-stamp::before {
  content: "JV";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 4vw, 2.25rem);
  font-weight: 900;
  letter-spacing: 0.08em;
}

.blog-stamp::after,
.article-hero::after {
  border-radius: inherit;
}

.blog-stamp::after {
  content: "";
  position: absolute;
  inset: 0.38rem;
  border: var(--blog-border-width) solid currentColor;
  border-radius: 50%;
}

.blog-kicker,
.section-eyebrow,
.signup-modal-signal {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-line);
}

.blog-index-hero h1 {
  max-width: calc(100% - var(--blog-stamp-size));
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 7vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  text-wrap: pretty;
}

.blog-index-hero > p:last-child {
  max-width: 40rem;
  margin: 1.25rem 0 0;
  color: var(--color-muted);
  line-height: 1.85;
}

/* (2026-08-20 转人工修复)此处原有一条顶层 `.article-hero { padding-inline: 0 }` 覆盖,
   把 64 行的正常内衬清零——hero 带边框+渐变底,标题贴边线 1px,QA article-hero-flush
   连打 4 轮;fix agent 只调前一条定义的值,没发现这条后写覆盖。整条删除 */

.article-hero-meta,
.article-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  gap: 0.55rem;
  align-items: center;
}

.article-hero-meta {
  max-width: calc(100% - var(--blog-stamp-size));
  margin-bottom: 1rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.article-hero-meta > * {
  padding: 0.35rem 0.65rem;
  border: var(--blog-border-width) solid var(--color-line);
  border-radius: var(--radius-control);
  color: var(--color-text);
}

.article-hero-meta .tag {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: var(--color-text);
}

.article-hero h1 {
  max-width: calc(100% - clamp(1rem, 8vw, var(--blog-stamp-size)));
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 2.6rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
  text-wrap: pretty;
}

.article-hero-summary {
  max-width: 44rem;
  margin: 1.25rem 0 0;
  color: var(--color-muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

.blog-list-section {
  width: min(var(--blog-wide-width), calc(100% - (var(--gutter) * 2)));
  margin: clamp(3rem, 7vw, 5rem) auto;
}

.blog-list-heading {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  align-items: end;
  margin-bottom: 1.5rem;
}

.blog-list-heading h2,
.blog-index-cta h2 {
  margin: 0;
  font-size: clamp(1.7rem, 4vw, 2.3rem);
  text-wrap: pretty;
}

.blog-list-heading > p {
  max-width: 28rem;
  margin: 0;
  color: var(--color-muted);
  line-height: 1.7;
}

.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-bottom: 1.5rem;
}

.blog-filter {
  appearance: none;
  padding: 0.65rem 1rem;
  border: var(--blog-border-width) solid var(--color-line);
  border-radius: var(--radius-control);
  background: var(--color-panel);
  color: var(--color-text);
  font: 700 0.88rem/1 var(--font-body);
  cursor: pointer;
  transition:
    border-color var(--blog-modal-duration) ease,
    background-color var(--blog-modal-duration) ease,
    transform var(--blog-modal-duration) ease;
}

.blog-filter:hover {
  border-color: var(--color-warning);
  transform: translateY(-0.1rem);
}

.blog-filter.is-active {
  border-color: var(--color-accent);
  background: var(--color-accent);
  box-shadow: var(--shadow-pink);
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--blog-card-gap);
}

.article-card,
.related-card,
.post-nav-card {
  position: relative;
  border: var(--blog-border-width) solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  box-shadow: var(--shadow-cyan);
  transition:
    border-color var(--blog-modal-duration) ease,
    transform var(--blog-modal-duration) ease,
    background-color var(--blog-modal-duration) ease;
}

.article-card {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: clamp(1.25rem, 3vw, 1.75rem);
}

.article-card::before,
.related-card::before,
.post-nav-card::before {
  content: "";
  position: absolute;
  top: calc(var(--blog-border-width) * -1);
  right: 1rem;
  left: 1rem;
  height: calc(var(--blog-border-width) * 2);
  border-radius: var(--radius-xs);
  background: transparent;
  transition: background-color var(--blog-modal-duration) ease;
}

.article-card:hover,
.related-card:hover,
.post-nav-card:hover {
  border-color: var(--color-warning);
  transform: translateY(-0.2rem);
  background: var(--color-panel-strong);
}

.article-card:hover::before,
.related-card:hover::before,
.post-nav-card:hover::before {
  background: var(--color-warning);
}

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

.article-meta .tag {
  padding: 0.3rem 0.55rem;
  border: var(--blog-border-width) solid var(--color-accent);
  border-radius: var(--radius-control);
  background: var(--blog-accent-tint);
  color: var(--color-text);
}

.article-card h3,
.related-card h3 {
  margin: 1rem 0 0.7rem;
  font-size: 1.22rem;
  line-height: 1.45;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}

.article-card p,
.related-card p {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.75;
}

.article-card .article-link {
  margin-top: auto;
  padding-top: 1.2rem;
}

.article-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--color-warning);
  font-weight: 800;
  text-decoration: none;
}

.article-link::after {
  content: "→";
  transition: transform var(--blog-modal-duration) ease;
}

.article-link:hover::after {
  transform: translateX(0.25rem);
}

.blog-empty {
  grid-column: 1 / -1;
  margin: 0;
  padding: 2rem;
  border: var(--blog-border-width) dashed var(--color-line);
  border-radius: var(--radius-sm);
  color: var(--color-muted);
  text-align: center;
}

.blog-index-cta {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  align-items: center;
  width: min(var(--blog-wide-width), calc(100% - (var(--gutter) * 2)));
  margin: var(--section-space) auto;
  padding: clamp(1.5rem, 5vw, 3rem);
  border: var(--blog-border-width) solid var(--color-accent);
  border-radius: var(--radius-panel);
  background:
    linear-gradient(
      125deg,
      var(--color-accent-deep),
      color-mix(in srgb, var(--color-panel-strong) 74%, var(--color-accent))
    );
  box-shadow: var(--shadow-pink);
}

.blog-index-cta p {
  margin-bottom: 0;
  color: var(--color-text);
  line-height: 1.75;
}

.blog-index-cta-actions {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.blog-index-cta .btn-primary,
.article-promo .btn-primary {
  border-color: var(--color-text);
  background: var(--color-text);
  color: var(--color-bg);
}

.blog-index-cta .btn-secondary,
.article-promo .btn-secondary {
  border-color: var(--color-text);
  color: var(--color-text);
}

.article-body,
.blog-article > .article-body,
article[data-blog-article] {
  width: min(var(--blog-reading-width), calc(100% - (var(--gutter) * 2)));
  margin-inline: auto;
  /* 与 .article-hero 内衬同值(+边框宽补差),正文与 hero 文字左缘对齐 */
  padding-inline: calc(clamp(1.75rem, 3vw, 2.5rem) + var(--blog-border-width));
  padding-top: clamp(2rem, 5vw, 3.5rem);
  color: var(--color-text);
  font-size: var(--blog-copy-size);
  line-height: var(--blog-copy-leading);
  counter-reset: blog-section;
}

.article-body > :first-child,
.blog-article > .article-body > :first-child,
article[data-blog-article] > :first-child {
  margin-top: 0;
}

.article-body p,
.article-body li,
.blog-article p,
.blog-article li,
article[data-blog-article] p,
article[data-blog-article] li {
  font-size: var(--blog-copy-size);
  line-height: var(--blog-copy-leading);
}

.article-body p,
.blog-article .article-body p,
article[data-blog-article] p {
  margin: 1rem 0;
}

.article-body h2,
.blog-article .article-body h2,
article[data-blog-article] h2 {
  counter-increment: blog-section;
  display: flex;
  gap: 0.8rem;
  align-items: baseline;
  margin: 3.25rem 0 1.1rem;
  font-size: clamp(1.35rem, 4vw, 1.6rem);
  line-height: 1.4;
  letter-spacing: -0.015em;
  text-wrap: pretty;
}

.article-body h2::before,
.blog-article .article-body h2::before,
article[data-blog-article] h2::before {
  content: counter(blog-section, decimal-leading-zero);
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--color-warning);
}

.article-body h3,
.blog-article .article-body h3,
article[data-blog-article] h3 {
  margin: 2.1rem 0 0.8rem;
  font-size: clamp(1.15rem, 3vw, 1.3rem);
  line-height: 1.45;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}

.article-body a,
.blog-article .article-body a,
article[data-blog-article] a {
  color: var(--color-line);
  text-decoration-color: color-mix(in srgb, var(--color-line) 55%, transparent);
  text-underline-offset: 0.2em;
}

.article-body strong,
.blog-article .article-body strong,
article[data-blog-article] strong {
  color: var(--color-warning);
}

.article-body ul:not(.check-list),
.article-body ol,
.blog-article .article-body ul:not(.check-list),
.blog-article .article-body ol,
article[data-blog-article] ul:not(.check-list),
article[data-blog-article] ol {
  padding-left: 1.4rem;
}

.article-body li + li,
.blog-article .article-body li + li,
article[data-blog-article] li + li {
  margin-top: 0.45rem;
}

.article-body blockquote,
.blog-article .article-body blockquote,
article[data-blog-article] blockquote {
  margin: 1.8rem 0;
  padding: 1.1rem 1.25rem;
  border-left: 0.25rem solid var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--blog-accent-tint);
  color: var(--color-text);
}

.article-body blockquote p,
.blog-article .article-body blockquote p,
article[data-blog-article] blockquote p {
  margin: 0;
}

.table-scroll {
  overflow-x: auto;
  margin: 1.8rem 0;
  border: var(--blog-border-width) solid var(--color-line);
  border-radius: var(--radius-sm);
}

.article-body .data-table,
.article-body table,
.blog-article .article-body table,
article[data-blog-article] table {
  width: 100%;
  min-width: 36rem;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.prose > .data-table {
  display: block;
  overflow-x: auto;
  max-width: 100%;
}

.article-body th,
.article-body td,
.blog-article .article-body th,
.blog-article .article-body td,
article[data-blog-article] th,
article[data-blog-article] td {
  padding: 0.85rem 1rem;
  border-bottom: var(--blog-border-width) solid color-mix(in srgb, var(--color-line) 28%, transparent);
  text-align: left;
  vertical-align: top;
}

.article-body th,
.blog-article .article-body th,
article[data-blog-article] th {
  background: var(--color-line);
  color: var(--color-bg);
  font-weight: 900;
}

.article-body tbody tr:nth-child(even),
.blog-article .article-body tbody tr:nth-child(even),
article[data-blog-article] tbody tr:nth-child(even) {
  background: var(--blog-line-tint);
}

.article-body tbody tr:hover,
.blog-article .article-body tbody tr:hover,
article[data-blog-article] tbody tr:hover {
  background: var(--blog-warning-tint);
}

.article-body pre,
.blog-article .article-body pre,
article[data-blog-article] pre {
  position: relative;
  overflow-x: auto;
  margin: 1.8rem 0;
  padding: 2.8rem 1.25rem 1.25rem;
  border: var(--blog-border-width) solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  box-shadow: var(--shadow-cyan);
}

.article-body pre::before,
.blog-article .article-body pre::before,
article[data-blog-article] pre::before {
  content: "●  ●  ●   RELAY TERMINAL";
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  padding: 0.65rem 1rem;
  border-bottom: var(--blog-border-width) solid color-mix(in srgb, var(--color-line) 40%, transparent);
  color: var(--color-warning);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
}

.article-body pre code,
.blog-article .article-body pre code,
article[data-blog-article] pre code {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.7;
}

.callout {
  position: relative;
  margin: 1.8rem 0;
  padding: 1.15rem 1.25rem 1.15rem 3.6rem;
  border: var(--blog-border-width) solid var(--color-line);
  border-left: 0.3rem solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--blog-line-tint);
}

.callout::before {
  content: "!";
  position: absolute;
  top: 1.15rem;
  left: 1.15rem;
  display: grid;
  width: 1.45rem;
  aspect-ratio: 1;
  place-items: center;
  border: var(--blog-border-width) solid currentColor;
  border-radius: 50%;
  color: var(--color-line);
  font-family: var(--font-mono);
  font-weight: 900;
  line-height: 1;
}

.callout.warning,
.callout.is-warning {
  border-color: var(--color-warning);
  background: var(--blog-warning-tint);
}

.callout.warning::before,
.callout.is-warning::before {
  color: var(--color-warning);
}

.callout.success,
.callout.is-success {
  border-color: var(--color-success);
  background: var(--blog-success-tint);
}

.callout.success::before,
.callout.is-success::before {
  content: "+";
  color: var(--color-success);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 10rem), 1fr));
  gap: 0.8rem;
  margin: 1.8rem 0;
}

.stat-card {
  position: relative;
  overflow: hidden;
  padding: 1.2rem;
  border: var(--blog-border-width) solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--blog-line-tint);
}

.stat-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 0.22rem;
  background: var(--color-line);
}

.stat-card:nth-child(even) {
  border-color: var(--color-warning);
  background: var(--blog-warning-tint);
}

.stat-card:nth-child(even)::before {
  background: var(--color-warning);
}

.stat-card:nth-child(3n) {
  border-color: var(--color-accent);
  background: var(--blog-accent-tint);
}

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

.stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 4vw, 2rem);
  font-weight: 900;
  color: var(--color-text);
}

.stat-label {
  display: block;
  margin-top: 0.3rem;
  color: var(--color-muted);
  font-size: 0.85rem;
  line-height: 1.5;
}

.check-list {
  display: grid;
  gap: 0.65rem;
  margin: 1.8rem 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  padding: 0.85rem 1rem;
  border: var(--blog-border-width) solid color-mix(in srgb, var(--color-line) 48%, transparent);
  border-radius: var(--radius-xs);
  background: var(--color-panel);
}

.verdict {
  margin: 1.8rem 0;
  padding: 1.1rem 1.25rem;
  border: var(--blog-border-width) solid var(--color-accent);
  border-left-width: 0.32rem;
  border-radius: var(--radius-sm);
  background: var(--blog-accent-tint);
}

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

.article-promo {
  position: relative;
  overflow: hidden;
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  align-items: center;
  width: min(var(--blog-reading-width), calc(100% - (var(--gutter) * 2)));
  margin: clamp(3rem, 7vw, 5rem) auto 0;
  padding: clamp(1.5rem, 5vw, 2.75rem);
  border: var(--blog-border-width) solid var(--color-warning);
  border-radius: var(--radius-panel);
  background:
    linear-gradient(
      125deg,
      var(--color-accent-deep),
      color-mix(in srgb, var(--color-panel-strong) 68%, var(--color-accent))
    );
  box-shadow: var(--shadow-pink);
}

.article-promo::before {
  content: "JV";
  position: absolute;
  right: 1.25rem;
  bottom: -0.2em;
  color: color-mix(in srgb, var(--color-text) 13%, transparent);
  font-family: var(--font-display);
  font-size: clamp(5rem, 18vw, 10rem);
  font-weight: 900;
  line-height: 0.8;
  pointer-events: none;
}

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

.article-promo h2 {
  margin: 0;
  color: var(--color-text);
  font-size: clamp(1.45rem, 4vw, 2rem);
  text-wrap: pretty;
}

.article-promo p {
  margin: 0.65rem 0 0;
  color: var(--color-text);
  line-height: 1.7;
}

#related-posts,
#post-nav {
  width: min(var(--blog-reading-width), calc(100% - (var(--gutter) * 2)));
  margin-inline: auto;
}

#related-posts {
  padding-top: 2.75rem;
}

#related-posts > h2 {
  margin: 0 0 1.2rem;
  font-size: clamp(1.4rem, 4vw, 1.8rem);
  text-wrap: pretty;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
}

.related-card {
  display: flex;
  flex-direction: column;
  padding: 1.1rem;
}

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

.related-card p {
  display: -webkit-box;
  overflow: hidden;
  font-size: 0.88rem;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.related-card .article-link {
  margin-top: auto;
  padding-top: 1rem;
  font-size: 0.88rem;
}

#post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
  padding-top: 1.5rem;
  padding-bottom: 0.75rem;
}

.post-nav-card {
  display: flex;
  flex-direction: column;
  padding: 1.1rem;
  color: var(--color-text);
  text-decoration: none;
}

.post-nav-card:nth-child(2):last-child {
  text-align: right;
}

.post-nav-card span {
  margin-bottom: 0.45rem;
  color: var(--color-line);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
}

.post-nav-card strong {
  font-size: 0.95rem;
  line-height: 1.55;
}

.signup-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  padding: var(--gutter);
  place-items: center;
  background: var(--blog-overlay);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--blog-modal-duration) ease,
    visibility var(--blog-modal-duration) ease;
}

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

.signup-modal.is-closing {
  opacity: 0;
  visibility: hidden;
}

.signup-modal-panel {
  position: relative;
  width: min(31rem, 100%);
  padding: clamp(1.5rem, 5vw, 2.5rem);
  border: var(--blog-border-width) solid var(--color-line);
  border-radius: var(--radius-panel);
  background: var(--color-panel-strong);
  box-shadow: var(--shadow-cyan);
  transform: translateY(0.75rem) scale(0.98);
  transition: transform var(--blog-modal-duration) ease;
}

.signup-modal.is-open .signup-modal-panel {
  transform: translateY(0) scale(1);
}

.signup-modal-panel::before {
  content: "";
  position: absolute;
  inset: 0.55rem;
  border: var(--blog-border-width) solid color-mix(in srgb, var(--color-warning) 42%, transparent);
  border-radius: var(--radius-sm);
  pointer-events: none;
}

.signup-modal-close {
  position: absolute;
  top: 0.7rem;
  right: 0.7rem;
  z-index: 1;
  display: grid;
  width: 2.25rem;
  aspect-ratio: 1;
  padding: 0;
  place-items: center;
  border: var(--blog-border-width) solid var(--color-line);
  border-radius: 50%;
  background: var(--color-bg);
  color: var(--color-text);
  font: 700 1.4rem/1 var(--font-body);
  cursor: pointer;
}

.signup-modal-close:hover {
  border-color: var(--color-warning);
  color: var(--color-warning);
}

.signup-modal-signal {
  padding-right: 2.5rem;
}

.signup-modal-panel h2 {
  margin: 0;
  font-size: clamp(1.6rem, 6vw, 2.2rem);
  line-height: 1.25;
  text-wrap: pretty;
}

.signup-modal-panel > p:not(.signup-modal-signal) {
  margin: 1rem 0 0;
  color: var(--color-muted);
  line-height: 1.75;
}

.signup-modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  align-items: center;
  margin-top: 1.5rem;
}

.signup-modal-dismiss {
  padding: 0.7rem;
  color: var(--color-muted);
  font-weight: 700;
  text-underline-offset: 0.2em;
}

.signup-modal-dismiss:hover {
  color: var(--color-text);
}

@media (max-width: 768px) {
  .blog-index-hero h1,
  .article-hero h1,
  .article-hero-meta {
    max-width: 100%;
  }

  .blog-stamp,
  .article-hero::before {
    top: 1rem;
    right: 1rem;
    opacity: 0.22;
  }

  .blog-list-heading,
  .blog-index-cta,
  .article-promo {
    align-items: flex-start;
    flex-direction: column;
  }

  .article-grid,
  .related-grid {
    grid-template-columns: 1fr;
  }

  .blog-index-cta-actions,
  .article-promo .btn {
    width: 100%;
  }

  .blog-index-cta-actions .btn {
    flex: 1 1 auto;
  }

  #post-nav {
    grid-template-columns: 1fr;
  }

  .post-nav-card:nth-child(2):last-child {
    text-align: left;
  }
}

@media (max-width: 480px) {
  .blog-index-hero {
    padding-inline: 1.5rem;
  }

  .blog-index-hero h1 {
    font-size: clamp(2rem, 11vw, 2.6rem);
  }

  .article-hero h1 {
    font-size: clamp(1.85rem, 10vw, 2.25rem);
  }

  .blog-filters {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .blog-filter {
    width: 100%;
  }

  .article-body h2,
  .blog-article .article-body h2,
  article[data-blog-article] h2 {
    gap: 0.55rem;
  }

  .signup-modal-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .signup-modal-actions .btn,
  .signup-modal-dismiss {
    width: 100%;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .blog-filter,
  .article-card,
  .related-card,
  .post-nav-card,
  .article-link::after,
  .signup-modal,
  .signup-modal-panel {
    transition: none;
  }

  .blog-filter:hover,
  .article-card:hover,
  .related-card:hover,
  .post-nav-card:hover,
  .article-link:hover::after,
  .signup-modal-panel,
  .signup-modal.is-open .signup-modal-panel {
    transform: none;
  }
}

/* 2026-08-20 小学生走查:移动端宽表(30 站几乎全中:统一 608~720px 模板宽表在手机上第三列被切,
   VPNCK 一篇整页撑破)。表格自身转滚动容器:窄屏横滑、不裁列、不撑破版心 */
@media (max-width: 860px) {
  article table, .article-body table, .post-body table, .prose table, main table {
    display: block;
    width: fit-content;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin-inline: auto;
  }
}