/* 六智宝库 · 案例分类样式（cases/ 目录专用，复用公共令牌） */

/* ============ 案例总览页 ============ */
.case-grid {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
  display: grid;
  /* 420px 起跳：1100px 容器下稳定两列，4 张卡呈 2×2，避免出现 3+1 的失衡排布 */
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr));
  gap: 1.4rem;
}

.case-card {
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 1.4rem 1.4rem 1.2rem;
  text-decoration: none;
  color: var(--fg);
  box-shadow: var(--card-shadow);
  transition: transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease);
}
.case-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 10px rgba(44,31,18,.08), 0 22px 44px -26px rgba(44,31,18,.5);
  border-color: color-mix(in srgb, var(--tone, var(--accent)) 45%, var(--card-border));
}

.case-tag {
  align-self: flex-start;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--tone, var(--accent));
  background: color-mix(in srgb, var(--tone, var(--accent)) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--tone, var(--accent)) 26%, transparent);
  padding: .26rem .62rem;
  border-radius: 999px;
  margin-bottom: .85rem;
}

.case-card h3 {
  font-family: 'Fraunces','Songti SC','Source Han Serif SC','SimSun',serif;
  font-size: 1.18rem;
  line-height: 1.35;
  margin-bottom: .55rem;
}
.case-card-excerpt {
  color: var(--muted);
  font-size: .92rem;
  line-height: 1.6;
  flex: 1;
}
.case-card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1rem;
  padding-top: .85rem;
  border-top: 1px dashed var(--border);
  font-size: .8rem;
}
.case-card-source {
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: .35rem;
}
.case-card-go {
  color: var(--tone, var(--accent));
  font-weight: 700;
  white-space: nowrap;
}

/* ============ 案例详情页 · 宽版式（正文主栏 + 信息侧栏）============
   与 .page-header（1100px）同宽，左右边缘严格对齐，消除窄栏两侧的大片留白；
   正文主栏约 716px 保证中文阅读行宽舒适，侧栏承载数据 / 来源 / 延伸阅读。 */

.case-layout {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 288px;
  gap: 0 3rem;
  align-items: start;
}

.case-detail { min-width: 0; }

.case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  align-items: center;
  margin: .4rem 0 1.4rem;
  color: var(--muted);
  font-size: .82rem;
}
.case-meta .dot { width: 4px; height: 4px; border-radius: 50%; background: var(--border); }
.case-meta .case-tag { margin-bottom: 0; }

.case-lead {
  font-size: 1.06rem;
  line-height: 1.85;
  color: var(--fg);
  padding-left: 1rem;
  border-left: 3px solid color-mix(in srgb, var(--tone, var(--accent)) 55%, transparent);
  margin-bottom: 2.2rem;
}

/* ---- 正文分节：自动编号 + 细分隔线，去掉图标与粗色块 ---- */
.case-detail { counter-reset: case-sec; }
.case-block {
  counter-increment: case-sec;
  margin-bottom: 2.1rem;
}
.case-block h2 {
  display: flex;
  align-items: baseline;
  gap: .65rem;
  font-family: 'Fraunces','Songti SC','Source Han Serif SC','SimSun',serif;
  font-size: 1.26rem;
  line-height: 1.45;
  margin-bottom: .9rem;
  padding-bottom: .5rem;
  border-bottom: 1px solid var(--border);
}
.case-block h2::before {
  content: counter(case-sec, decimal-leading-zero);
  flex-shrink: 0;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--tone, var(--accent));
  opacity: .8;
}
.case-block p {
  font-size: 1rem;
  line-height: 1.9;
  color: var(--fg);
  margin-bottom: .9rem;
}
.case-block p:last-child { margin-bottom: 0; }
.case-block p strong { color: var(--tone, var(--accent)); font-weight: 700; }

/* 事故经过引文 */
.case-quote {
  background: color-mix(in srgb, var(--tone, var(--accent)) 7%, var(--surface));
  border-left: 3px solid color-mix(in srgb, var(--tone, var(--accent)) 70%, transparent);
  border-radius: 0 10px 10px 0;
  padding: 1.1rem 1.3rem;
  margin: .2rem 0 1rem;
  font-size: .96rem;
  line-height: 1.85;
  color: var(--fg);
}
.case-quote .case-quote-src {
  display: block;
  margin-top: .75rem;
  padding-top: .6rem;
  border-top: 1px dashed color-mix(in srgb, var(--tone, var(--accent)) 22%, var(--border));
  font-size: .78rem;
  line-height: 1.6;
  color: var(--muted);
}

/* 化学式 / 反应式 */
.case-chem {
  display: block;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: .98rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: .75rem 1.05rem;
  margin: .55rem 0 1rem;
  color: var(--fg);
  text-align: center;
  letter-spacing: .01em;
  overflow-x: auto;
}

/* 对比表（列表 ↔ 表格化信息，替代堆叠卡片） */
.case-table {
  width: 100%;
  border-collapse: collapse;
  margin: .6rem 0 1rem;
  font-size: .9rem;
}
.case-table th,
.case-table td {
  text-align: left;
  padding: .6rem .8rem;
  border-bottom: 1px solid var(--border);
  line-height: 1.6;
  vertical-align: top;
}
.case-table th {
  font-size: .78rem;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: .04em;
  background: color-mix(in srgb, var(--tone, var(--accent)) 5%, transparent);
}
.case-table tr:last-child td { border-bottom: none; }
.case-table td strong { color: var(--tone, var(--accent)); }

/* 防护教训 */
.case-lesson {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--tone, var(--accent));
  border-radius: 0 10px 10px 0;
  padding: 1.15rem 1.35rem;
}
.case-lesson h3 {
  font-size: 1rem;
  margin-bottom: .75rem;
  color: var(--fg);
}
.case-lesson ul { list-style: none; }
.case-lesson li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: .6rem;
  line-height: 1.75;
  color: var(--fg);
}
.case-lesson li:last-child { margin-bottom: 0; }
.case-lesson li::before {
  content: "✓";
  position: absolute;
  left: 0; top: 0;
  color: var(--tone, var(--accent));
  font-weight: 700;
}
.case-lesson li strong { color: var(--tone, var(--accent)); }

/* 分步处置（编号圆点） */
.case-block .case-steps {
  list-style: none;
  margin: .4rem 0 0;
}
.case-block .case-steps li {
  counter-increment: case-step;
  position: relative;
  padding-left: 2.2rem;
  margin-bottom: .75rem;
  line-height: 1.8;
  color: var(--fg);
}
.case-block .case-steps li:last-child { margin-bottom: 0; }
.case-block .case-steps {
  counter-reset: case-step;
}
.case-block .case-steps li::before {
  content: counter(case-step);
  position: absolute;
  left: 0;
  top: .3rem;
  width: 1.5rem;
  height: 1.5rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: .72rem;
  font-weight: 700;
  color: var(--tone, var(--accent));
  background: color-mix(in srgb, var(--tone, var(--accent)) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--tone, var(--accent)) 28%, transparent);
}
.case-block .case-steps li strong { color: var(--tone, var(--accent)); }

.case-disclaimer {
  margin-top: 2rem;
  font-size: .82rem;
  line-height: 1.75;
  color: var(--muted);
  background: color-mix(in srgb, var(--tone, var(--accent)) 5%, var(--surface));
  border-left: 3px solid color-mix(in srgb, var(--tone, var(--accent)) 45%, transparent);
  padding: .9rem 1.1rem;
  border-radius: 0 8px 8px 0;
}

/* ============ 侧栏（关键数据 / 引用来源 / 相关解读）============ */
.case-side {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-self: start;
  min-width: 0;
  /* 吸附：正文比侧栏长得多，粘住后滚动过程中右侧不会变成空白 */
  position: sticky;
  top: 80px;
  max-height: calc(100vh - 104px);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, var(--tone, var(--accent)) 28%, transparent) transparent;
}
.case-side::-webkit-scrollbar { width: 5px; }
.case-side::-webkit-scrollbar-thumb {
  background: color-mix(in srgb, var(--tone, var(--accent)) 28%, transparent);
  border-radius: 3px;
}
.case-side-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 1.05rem 1.15rem 1.15rem;
  box-shadow: var(--card-shadow);
}
.case-side-title,
.case-related-title {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--muted);
  padding-bottom: .6rem;
  margin-bottom: .85rem;
  border-bottom: 1px solid var(--border);
}
.case-side-title::before,
.case-related-title::before {
  content: "";
  flex-shrink: 0;
  width: 3px;
  height: 12px;
  border-radius: 2px;
  background: var(--tone, var(--accent));
}

/* 侧栏关键数据：由横排改竖排，数字与说明基线对齐 */
.case-figs {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  margin: 0;
}
.case-fig {
  display: flex;
  align-items: baseline;
  gap: .6rem;
  padding: .55rem .75rem;
  background: color-mix(in srgb, var(--tone, var(--accent)) 6%, var(--surface));
  border-radius: 8px;
}
.case-fig .n {
  flex-shrink: 0;
  min-width: 3.2rem;
  font-family: 'Fraunces', serif;
  font-size: 1.28rem;
  font-weight: 700;
  line-height: 1.15;
  color: var(--tone, var(--accent));
}
.case-fig .l { font-size: .76rem; line-height: 1.5; color: var(--muted); }

/* 侧栏事件速览（无量化数据时使用：一句一条） */
.case-facts { list-style: none; }
.case-facts li {
  display: flex;
  gap: .6rem;
  padding: .45rem 0;
  font-size: .84rem;
  line-height: 1.65;
  color: var(--fg);
  border-bottom: 1px dashed var(--border);
}
.case-facts li:last-child { border-bottom: none; }
.case-facts .k {
  flex-shrink: 0;
  width: 3.6rem;
  color: var(--muted);
  font-size: .78rem;
}

/* 引用来源（侧栏窄栏排版） */
.citation-box { margin: 0; }
.citation-box h3 {
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--muted);
  margin-bottom: .75rem;
  display: flex;
  align-items: center;
  gap: .5rem;
}
.citation-box h3::before {
  content: "";
  flex-shrink: 0;
  width: 3px;
  height: 12px;
  border-radius: 2px;
  background: var(--tone, var(--accent));
}
.citation-box ol { padding-left: 1.05rem; }
.citation-box li {
  margin-bottom: .75rem;
  line-height: 1.65;
  font-size: .82rem;
  color: var(--fg);
}
.citation-box li:last-child { margin-bottom: 0; }
.citation-box a {
  color: var(--accent);
  font-size: .76rem;
  word-break: break-all;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .2s var(--ease);
}
.citation-box a:hover { border-bottom-color: currentColor; }
.citation-box .cite-kind {
  display: inline-block;
  font-size: .68rem;
  font-weight: 700;
  color: var(--muted);
  background: var(--surface-2);
  border-radius: 4px;
  padding: .1rem .42rem;
  margin-right: .4rem;
}
.citation-box .cite-note { color: var(--muted); font-size: .76rem; line-height: 1.6; }

/* 相关解读（侧栏竖排） */
.related-articles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: .7rem;
}
.related-article-card {
  position: relative;
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .8rem .9rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  text-decoration: none;
  color: var(--fg);
  overflow: hidden;
  transition: transform .22s var(--ease), border-color .22s var(--ease), background-color .22s var(--ease);
}
.related-article-card::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--tone, var(--accent));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .3s var(--ease);
}
.related-article-card:hover {
  transform: translateX(3px);
  background: var(--card);
  border-color: color-mix(in srgb, var(--tone, var(--accent)) 40%, var(--border));
}
.related-article-card:hover::before { transform: scaleY(1); }

.related-article-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: .2rem;
}
.related-article-name { font-weight: 700; font-size: .88rem; line-height: 1.45; }
.related-article-desc { font-size: .76rem; line-height: 1.55; color: var(--muted); }
.related-article-arrow {
  flex-shrink: 0;
  font-weight: 700;
  color: var(--tone, var(--accent));
  transition: transform .22s var(--ease);
}
.related-article-card:hover .related-article-arrow { transform: translateX(3px); }

/* 相关解读 · 图标（仅总览页宽版卡使用，详情页侧栏卡不带图标） */
.related-article-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  font-size: 1.02rem;
  line-height: 1;
  border-radius: 10px;
  background: color-mix(in srgb, var(--tone, var(--accent)) 9%, var(--surface-2));
  border: 1px solid color-mix(in srgb, var(--tone, var(--accent)) 20%, var(--border));
}

/* ============ 案例总览页 · 相关解读（宽版式）============
   ⚠️ 这两个类此前没有任何定义，导致该区块满屏出血、标题裸露。
   这里与 .case-grid / .case-layout 共用 1100px 容器，保证左右边缘对齐。 */
.related-articles-hub {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.related-articles-title {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-family: 'Fraunces','Songti SC','Source Han Serif SC','SimSun',serif;
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--fg);
  padding-bottom: .6rem;
  margin-bottom: 1.15rem;
  border-bottom: 1px solid var(--border);
}
/* 宽容器下改双列（详情页侧栏仍是单列竖排） */
.related-articles-hub .related-articles-grid {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: 1rem;
}
.related-articles-hub .related-article-card { padding: 1.05rem 1.2rem; }
.related-articles-hub .related-article-name { font-size: .98rem; }
.related-articles-hub .related-article-desc { font-size: .82rem; }

/* 详情页早期类名兼容（.related-article-link / .related-label） */
.related-article-link {
  display: flex;
  align-items: center;
  gap: .6rem;
  flex-wrap: wrap;
  padding: .9rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.related-label {
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--muted);
}
.related-article-link a { color: var(--tone, var(--accent)); font-weight: 700; text-decoration: none; }
.related-article-link a:hover { text-decoration: underline; }

/* ============ 上一篇 / 下一篇 ============ */
.case-pager {
  max-width: 1100px;
  margin: 2.6rem auto 0;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .9rem;
}
.case-pager-link {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .4rem;
  padding: 1.05rem 1.2rem;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  text-decoration: none;
  color: var(--fg);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease);
}
.case-pager-link.is-next { text-align: right; align-items: flex-end; }
.case-pager-link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--tone, var(--accent));
  transform: scaleX(0);
  transition: transform .3s var(--ease);
}
.case-pager-link.is-prev::after { transform-origin: left; }
.case-pager-link.is-next::after { transform-origin: right; }
.case-pager-link:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--tone, var(--accent)) 38%, var(--card-border));
  box-shadow: 0 16px 34px -24px rgba(44,31,18,.5);
}
.case-pager-link:hover::after { transform: scaleX(1); }
.case-pager-dir {
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--tone, var(--accent));
}
.case-pager-name {
  font-size: .86rem;
  line-height: 1.55;
  color: var(--muted);
  transition: color .22s var(--ease);
}
.case-pager-link:hover .case-pager-name { color: var(--fg); }

/* ============ 返回总览 ============ */
.case-nav-back {
  max-width: 1100px;
  margin: 1.6rem auto 0;
  padding: 0 1.5rem 3rem;
}

/* 顶部阅读进度条（由 case-detail.js 写入 scaleX） */
.read-progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  transform: scaleX(0);
  transform-origin: left center;
  background: var(--tone, var(--accent));
  opacity: .8;
  z-index: 9999;
  pointer-events: none;
}

/* ============ 响应式 ============ */
@media (max-width: 980px) {
  .case-layout {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .case-side {
    margin-top: 2.4rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1rem;
    /* 单栏后侧栏落到正文下方，取消吸附与高度限制 */
    position: static;
    max-height: none;
    overflow: visible;
  }
}

@media (max-width: 640px) {
  .case-pager { grid-template-columns: 1fr; }
  .case-pager-link.is-next { text-align: left; align-items: flex-start; }
  .case-side { grid-template-columns: 1fr; }
  .case-table { font-size: .84rem; }
  .case-table th, .case-table td { padding: .5rem .55rem; }
}