:root {
  --reading-col: 55rem;
  --reading-pad: max(var(--gutter), 1.5rem);
}

.no-break {
  white-space: nowrap;
}

.reading-wrap {
  width: 100%;
  max-width: calc(var(--reading-col) + 2 * var(--reading-pad));
  margin-inline: auto;
  padding-inline: var(--reading-pad);
}

.hero-inner {
  width: 100%;
  max-width: var(--reading-col);
  margin-inline: auto;
}

.meta-dot {
  color: var(--text-muted);
  opacity: 0.7;
}

/* ---------- 列表页通栏色带 ---------- */

.band-hero {
  position: relative;
  padding-block: clamp(2.2rem, 6vw, 3.8rem);
  padding-inline: var(--reading-pad);
  border-block: 1px solid var(--border-soft);
  background-color: var(--bg-panel);
  background-image:
    linear-gradient(180deg, color-mix(in srgb, var(--accent) 7%, transparent), transparent 72%),
    radial-gradient(circle at 1px 1px, var(--accent-12) 1px, transparent 1.2px);
  background-size: 100% 100%, 22px 22px;
  background-repeat: no-repeat, repeat;
}

.band-kicker {
  margin: 0 0 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  color: var(--accent-dark);
}

.band-title {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 4.4vw, 2.7rem);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--text);
  text-wrap: pretty;
}

.band-title .no-break {
  color: var(--accent);
}

.band-lede {
  margin: 0 0 1rem;
  max-width: 42rem;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-muted);
}

.band-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.3rem 0.55rem;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ---------- 标签筛选 ---------- */

.tag-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-block: 0 clamp(1.2rem, 3vw, 1.8rem);
}

.tag-btn {
  appearance: none;
  font-family: inherit;
  font-size: 0.86rem;
  line-height: 1.2;
  padding: 0.5rem 0.95rem;
  border-radius: var(--r-pill);
  border: 1px solid var(--border);
  background: var(--bg-panel);
  color: var(--text-muted);
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.tag-btn:hover {
  border-color: var(--accent-45);
  color: var(--text);
}

.tag-btn.is-active {
  background: var(--ink-900);
  border-color: var(--ink-900);
  color: var(--bg-panel);
}

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

/* ---------- 文章卡片 ---------- */

.blog-list {
  display: grid;
  gap: clamp(0.9rem, 2vw, 1.15rem);
}

.blog-card {
  position: relative;
  padding: clamp(1.1rem, 3vw, 1.6rem);
  border: 1px solid var(--border-soft);
  border-radius: var(--r-card);
  background: var(--bg-panel);
  box-shadow: var(--lift-soft);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.blog-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: clamp(1.1rem, 3vw, 1.6rem);
  right: clamp(1.1rem, 3vw, 1.6rem);
  height: 2px;
  border-radius: var(--r-pill);
  background: transparent;
  transition: background-color 0.25s ease;
}

.blog-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-30);
  box-shadow: var(--lift-card);
}

.blog-card:hover::after {
  background: var(--accent);
}

.blog-card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.3rem 0.5rem;
  margin: 0 0 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-muted);
}

.blog-card-tag {
  padding: 0.1rem 0.5rem;
  border-radius: var(--r-chip);
  background: var(--accent-08);
  color: var(--accent-dark);
  font-family: var(--font-body);
  font-size: 0.72rem;
}

.blog-card-title {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.2vw, 1.35rem);
  line-height: 1.42;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}

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

.blog-card-title a:hover {
  color: var(--accent-dark);
}

.blog-card-title a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: var(--r-chip);
}

.blog-card-summary {
  margin: 0 0 0.8rem;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--text-muted);
}

.blog-card-more {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--accent-dark);
  text-decoration: none;
}

.blog-card-more-mark {
  transition: transform 0.2s ease;
}

.blog-card-more:hover .blog-card-more-mark {
  transform: translateX(3px);
}

.blog-empty {
  margin: 0;
  padding: 1.6rem;
  border: 1px dashed var(--border);
  border-radius: var(--r-card);
  background: var(--bg-panel);
  color: var(--text-muted);
  text-align: center;
}

/* ---------- 面包屑 ---------- */

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  padding-top: 1.5rem;
  margin-block: 0 1.2rem;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--text-muted);
}

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

.breadcrumb a:hover {
  color: var(--accent-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

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

/* ---------- 文章页通栏色带 hero ---------- */

.article-hero {
  position: relative;
  padding-block: clamp(1.9rem, 5vw, 3.2rem);
  padding-inline: var(--reading-pad);
  border-block: 1px solid var(--border-soft);
  background-color: var(--bg-panel);
  background-image:
    linear-gradient(180deg, color-mix(in srgb, var(--accent) 6%, transparent), transparent 74%),
    radial-gradient(circle at 1px 1px, var(--accent-12) 1px, transparent 1.2px);
  background-size: 100% 100%, 24px 24px;
  background-repeat: no-repeat, repeat;
}

/* Hero inner column must sit on the exact same reading column as the body:
   the band keeps its own padding-inline, the inner column adds none. */
.article-hero .hero-inner {
  max-width: var(--reading-col);
  padding-inline: 0;
  text-align: left;
}

.article-body .prose {
  max-width: none;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.3rem 0.55rem;
  margin: 0 0 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-muted);
}

.article-title {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(1.62rem, 3.6vw, 2.5rem);
  line-height: 1.26;
  letter-spacing: -0.01em;
  color: var(--text);
  text-wrap: pretty;
}

.article-title .no-break {
  color: var(--accent);
}

.article-lede {
  margin: 0;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-muted);
}

.article-body {
  padding-block: clamp(1.5rem, 3.5vw, 2.2rem) 0;
}

/* ---------- 正文排版 ---------- */

.prose {
  counter-reset: sec;
  max-width: 72ch;
  margin-inline: auto;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text);
}

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

.prose p {
  margin-block: 0 1.15em;
}

.prose h2 {
  margin-block: clamp(1.9rem, 4vw, 2.6rem) 0.9rem;
  font-family: var(--font-display);
  font-size: clamp(1.28rem, 2.1vw, 1.6rem);
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--text);
  text-wrap: pretty;
}

.prose h2::before {
  counter-increment: sec;
  content: counter(sec, decimal-leading-zero);
  display: inline-block;
  margin-inline-end: 0.55rem;
  padding: 0.06em 0.42em;
  border-inline-start: 3px solid var(--accent);
  border-radius: var(--r-chip);
  background: var(--accent-08);
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: 0.66em;
  font-weight: 500;
  letter-spacing: 0.04em;
  vertical-align: 0.12em;
}

.prose h3 {
  margin-block: 1.6rem 0.6rem;
  font-family: var(--font-body);
  font-size: clamp(1.06rem, 1.6vw, 1.28rem);
  line-height: 1.5;
  font-weight: 700;
  color: var(--text);
  text-wrap: pretty;
}

.prose ul,
.prose ol {
  margin-block: 0 1.15em;
  padding-inline-start: 1.35em;
}

.prose li {
  margin-block: 0.35em;
}

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

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

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

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

.prose blockquote {
  margin: 1.4em 0;
  padding: 1rem 1.2rem;
  border-inline-start: 3px solid var(--accent-45);
  border-radius: 0 var(--r-tile) var(--r-tile) 0;
  background: var(--accent-06);
  color: var(--text);
}

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

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

.prose :not(pre) > code {
  padding: 0.12em 0.4em;
  border-radius: var(--r-chip);
  background: var(--bg-panel-2);
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: 0.9em;
}

/* ---------- 正文表格 ---------- */

.prose .table-scroll {
  max-width: 100%;
  margin-block: 0 1.4em;
  overflow-x: auto;
  border: 1px solid var(--border-soft);
  border-radius: var(--r-panel);
  background: var(--bg-panel);
}

.prose table {
  width: 100%;
  min-width: 34rem;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.prose caption {
  caption-side: top;
  padding: 0.8rem 1rem;
  text-align: left;
  font-size: 0.82rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-soft);
}

.prose thead th {
  background: var(--ink-800);
  color: var(--bg-panel);
  font-weight: 600;
  text-align: left;
  padding: 0.7rem 0.9rem;
  white-space: nowrap;
}

.prose tbody td {
  padding: 0.7rem 0.9rem;
  border-top: 1px solid var(--border-soft);
  word-break: keep-all;
  vertical-align: top;
}

.prose tbody tr:nth-child(even) {
  background: var(--inset-a);
}

.prose tbody tr:hover {
  background: var(--accent-06);
}

@media (max-width: 860px) {
  .prose table {
    display: block;
    width: max-content;
    max-width: 100%;
    overflow-x: auto;
    min-width: 0;
  }
}

/* ---------- 终端窗代码块 ---------- */

.prose pre {
  position: relative;
  margin-block: 0 1.4em;
  padding: 2.4rem 1.1rem 1.1rem;
  border-radius: var(--r-panel);
  background: var(--ink-900);
  color: var(--bg-panel);
  overflow-x: auto;
  font-size: 0.86rem;
  line-height: 1.7;
}

.prose pre::before {
  content: "";
  position: absolute;
  top: 1rem;
  left: 1.1rem;
  width: 0.52rem;
  height: 0.52rem;
  border-radius: 50%;
  background: var(--dot-r);
  box-shadow: 0.95rem 0 0 var(--dot-y), 1.9rem 0 0 var(--dot-g);
}

.prose pre code {
  display: block;
  padding: 0;
  background: none;
  color: inherit;
  font-family: var(--font-mono);
  font-size: 1em;
  white-space: pre;
}

/* ---------- 提示块 ---------- */

.prose .callout {
  position: relative;
  margin-block: 0 1.4em;
  padding: 1rem 1.15rem 1rem 2.9rem;
  border-radius: var(--r-tile);
  border-inline-start: 3px solid var(--accent);
  background: var(--accent-06);
  color: var(--text);
  line-height: 1.75;
}

.prose .callout::before {
  content: "注";
  position: absolute;
  top: 0.95rem;
  left: 0.85rem;
  display: grid;
  place-items: center;
  width: 1.4rem;
  height: 1.4rem;
  border-radius: 50%;
  background: var(--accent);
  color: var(--bg-panel);
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1;
}

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

.prose .callout--warn {
  border-inline-start-color: var(--warn);
  background: var(--warn-08);
}

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

.prose .callout--ok {
  border-inline-start-color: var(--ok);
  background: var(--ok-08);
}

.prose .callout--ok::before {
  content: "✓";
  background: var(--ok);
}

/* ---------- 数据卡 ---------- */

.prose .stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9.5rem, 1fr));
  gap: 0.75rem;
  margin-block: 0 1.4em;
}

.prose .stat-card {
  position: relative;
  padding: 1.05rem 1rem 1.05rem;
  border: 1px solid var(--border-soft);
  border-radius: var(--r-tile);
  background: var(--bg-panel);
  overflow: hidden;
}

.prose .stat-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent);
}

.prose .stat-card:nth-child(2n) {
  background: var(--inset-a);
}

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

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

.prose .stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.6vw, 1.7rem);
  line-height: 1.2;
  color: var(--accent-dark);
}

.prose .stat-card:nth-child(2n) .stat-num {
  color: var(--text);
}

.prose .stat-label {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--text-muted);
}

/* ---------- 勾叉清单:只做容器装饰,不注入任何符号 ---------- */

.prose .check-list {
  list-style: none;
  margin-block: 0 1.3em;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.prose .check-list li {
  margin: 0;
  padding: 0.75rem 0.95rem;
  border: 1px solid var(--border-soft);
  border-radius: var(--r-tile);
  background: var(--bg-panel);
  line-height: 1.7;
}

/* ---------- 结论块 ---------- */

.prose .verdict {
  margin-block: 1.2em 1.4em;
  padding: 1rem 1.2rem;
  border-inline-start: 4px solid var(--accent);
  border-radius: 0 var(--r-tile) var(--r-tile) 0;
  background: var(--accent-06);
  background: color-mix(in srgb, var(--accent) 7%, var(--bg-panel));
  line-height: 1.75;
}

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

/* ---------- 文末推广卡 ---------- */

.promo-card {
  position: relative;
  margin-block: clamp(1.8rem, 4vw, 2.6rem) 0;
  padding: clamp(1.3rem, 3.5vw, 2rem);
  border-radius: var(--r-card);
  background:
    radial-gradient(120% 140% at 88% 6%, var(--accent) 0%, transparent 58%),
    linear-gradient(135deg, var(--ink-900), var(--ink-800) 55%, var(--accent-dark));
  color: var(--bg-panel);
  overflow: hidden;
}

.promo-card::after {
  content: "";
  position: absolute;
  right: 1.4rem;
  bottom: 1.4rem;
  width: 6rem;
  height: 6rem;
  border-radius: 50%;
  border: 1px solid var(--snow-55);
  opacity: 0.45;
  pointer-events: none;
}

.promo-brand {
  position: relative;
  z-index: 1;
  display: inline-block;
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  color: var(--aur-cyan);
}

.promo-card p {
  position: relative;
  z-index: 1;
  margin: 0 0 1.1rem;
  max-width: 34rem;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--snow-92);
}

.promo-actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

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

.promo-card .btn-primary:hover {
  background: var(--aur-cream);
  border-color: var(--aur-cream);
  color: var(--accent-dark);
}

.promo-card .btn-ghost {
  background: transparent;
  border-color: var(--snow-55);
  color: var(--bg-panel);
}

.promo-card .btn-ghost:hover {
  border-color: var(--snow-92);
  color: var(--bg-panel);
}

@media (max-width: 720px) {
  .promo-card::after {
    display: none;
  }
}

/* ---------- 延伸阅读 ---------- */

#related-posts {
  padding-block: 1.1rem 0;
}

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

.related-title {
  margin: 0 0 0.9rem;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2vw, 1.4rem);
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--text);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}

.related-card {
  display: block;
  padding: 0.95rem 1rem;
  border: 1px solid var(--border-soft);
  border-radius: var(--r-tile);
  background: var(--bg-panel);
  text-decoration: none;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.related-card:hover {
  border-color: var(--accent-30);
  transform: translateY(-2px);
  box-shadow: var(--lift-soft);
}

.related-tag {
  display: inline-block;
  margin-bottom: 0.45rem;
  padding: 0.1rem 0.45rem;
  border-radius: var(--r-chip);
  background: var(--accent-08);
  color: var(--accent-dark);
  font-size: 0.72rem;
}

.related-head {
  display: block;
  font-family: var(--font-display);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text);
}

.related-date {
  display: block;
  margin-top: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

@media (max-width: 900px) {
  .related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .related-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- 上一篇 / 下一篇 ---------- */

#post-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding-block: 1.5rem 1.1rem;
}

#post-nav:empty,
#post-nav[hidden] {
  display: none;
  padding: 0;
}

.postnav-link {
  flex: 1 1 15rem;
  display: block;
  padding: 0.9rem 1rem;
  border: 1px solid var(--border-soft);
  border-radius: var(--r-tile);
  background: var(--bg-panel);
  text-decoration: none;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.postnav-link:hover {
  border-color: var(--accent-30);
  transform: translateY(-2px);
}

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

.postnav-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--accent-dark);
}

.postnav-title {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--text);
}

.postnav-tag {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.74rem;
  color: var(--text-muted);
}

/* ---------- 文章页悬浮 CTA(列表页不使用) ---------- */

.float-cta {
  position: fixed;
  right: clamp(0.8rem, 3vw, 1.5rem);
  bottom: clamp(0.8rem, 3vw, 1.5rem);
  z-index: 40;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  max-width: calc(100vw - 1.6rem);
  padding: 0.7rem 1.1rem;
  border-radius: var(--r-pill);
  background: var(--accent);
  color: var(--bg-panel);
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  box-shadow: var(--lift-pill);
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.float-cta:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
}

.float-cta svg {
  flex: none;
  width: 1rem;
  height: 1rem;
}

.float-cta:focus-visible {
  outline: 2px solid var(--bg-panel);
  outline-offset: 2px;
}

@media (max-width: 640px) {
  .float-cta {
    right: 0.8rem;
    bottom: 0.8rem;
    padding: 0.6rem 0.95rem;
    font-size: 0.82rem;
  }
}

/* ---------- 动效降级 ---------- */

@media (prefers-reduced-motion: reduce) {
  .blog-card,
  .blog-card::after,
  .blog-card-more-mark,
  .tag-btn,
  .related-card,
  .postnav-link,
  .float-cta {
    transition: none;
  }

  .blog-card:hover,
  .related-card:hover,
  .postnav-link:hover,
  .float-cta:hover {
    transform: none;
  }

  .blog-card-more:hover .blog-card-more-mark {
    transform: none;
  }
}

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