/* =========================================================
   detail.css —— 详情页（问题/方案/详细版）文章页排版
   依赖 home.css 设计令牌 + shelf.css 组件（chip 等）
   ========================================================= */

/* ---------- 页头（eyebrow + 大标题 + 元信息） ---------- */
.page-head {
  padding: 3rem 0 2.5rem;
}
.page-head .crumb {
  margin: 0 0 1.25rem;
  font-size: 0.875rem;
  color: var(--color-gray-500);
}
.page-head .crumb a {
  color: var(--color-primary);
  text-decoration: none;
}
.page-head .crumb a:hover {
  text-decoration: underline;
  text-underline-offset: 2px;
}
.page-head .eyebrow {
  margin: 0 0 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.1rem;
  text-transform: uppercase;
  color: var(--color-gray-500);
}
.page-head h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.9rem, 4vw, 2.75rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.15;
}
.page-head > .wrap > p:not(.eyebrow):not(.cta-row) {
  max-width: 38rem;
  color: var(--color-gray-700);
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}
.page-body {
  padding: 1rem 0 3rem;
}

/* ---------- 两栏：左目录 + 正文 ---------- */
main.layout.wrap {
  max-width: 76rem;
}
.layout {
  display: grid;
  grid-template-columns: 16.25rem minmax(0, 1fr);
  gap: 5rem;
  align-items: start;
}
.toc {
  position: sticky;
  top: 4.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  margin: 2.25rem 0 0 3.75rem;
}
.toc-title {
  margin: 0 0 0.5rem 0;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.125rem;
  text-transform: uppercase;
  color: var(--color-gray-500);
}
.toc a {
  display: block;
  padding: 0.3rem 0;
  font-size: 1.05rem;
  color: var(--color-text);
  opacity: 0.7;
  text-decoration: none;
  transition: opacity 150ms, color 150ms;
}
.toc a:hover { opacity: 1; }
.toc a.active {
  color: var(--color-primary);
  opacity: 1;
  font-weight: 600;
}
.toc a.toc-out {
  margin-top: 1.25rem;
  font-size: 0.95rem;
  color: var(--color-gray-600);
  opacity: 0.85;
}
.toc a.toc-out:hover {
  color: var(--color-primary);
  opacity: 1;
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ---------- 正文排版（宽松行高 + 圆角代码） ---------- */
.content {
  min-width: 0;
  max-width: 56rem;
}
.content h2 {
  margin: 3rem 0 1.25rem;
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.25;
  scroll-margin-top: 3rem;
}
.content h3 {
  margin: 2.25rem 0 1rem;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.content p {
  margin: 0 0 1.25rem;
  line-height: 1.75;
}
.content ul,
.content ol {
  margin: 0 0 1.5rem;
  padding-left: 1.5rem;
  line-height: 1.75;
}
.content ul { list-style: disc; }
.content ol { list-style: decimal; }
.content li { margin: 0.35rem 0; }
.content li::marker { color: var(--color-gray-500); }
.content code {
  font-family: var(--font-family-mono, ui-monospace, SFMono-Regular, Menlo, Consolas, monospace);
  font-size: 0.9375em;
  background: var(--color-cloud-100);
  border-radius: 3px;
  padding: 2px 6px;
}
.content pre {
  margin: 0 0 1.5rem;
  padding: 1.25rem 1.5rem;
  background: #f6f8fa;
  color: #1f2328;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 0.9375rem;
  line-height: 1.65;
  outline: 1px solid #d0d7de;
  outline-offset: -1px;
}
html[data-theme="dark"] .content pre {
  background: #0d1117;
  color: #e6edf3;
  outline: 1px solid #30363d;
}
html[data-theme="dark"] .content code {
  background: rgba(110, 118, 129, 0.4);
  color: #e6edf3;
}
.content pre code {
  background: transparent;
  padding: 0;
  color: inherit;
}
.content blockquote {
  margin: 0 0 1.5rem;
  padding: 1rem 1.25rem;
  border-left: 3px solid var(--color-primary);
  background: var(--color-cloud-100);
  border-radius: 0 6px 6px 0;
  color: var(--color-gray-700);
}
.content table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 1.5rem;
  font-size: 0.9375rem;
}
.content th,
.content td {
  padding: 0.6rem 0.9rem;
  border-bottom: 1px solid var(--color-gray-200);
  text-align: left;
  vertical-align: top;
}
.content th {
  font-weight: 500;
  color: var(--color-gray-500);
}
.content img {
  max-width: 100%;
  border-radius: 8px;
}
.content hr {
  border: none;
  border-top: 1px solid var(--color-gray-200);
  margin: 2.5rem 0;
}
.content a {
  color: var(--color-primary);
  text-decoration: none;
}
.content a:hover {
  text-decoration: underline;
  text-underline-offset: 2px;
}
.muted {
  color: var(--color-gray-500);
}

/* ---------- 方案页元信息行（替代旧 meta-box 表格） ---------- */
.meta-line {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 1.75rem;
}
.install-cmd {
  margin: -0.75rem 0 2rem;
  font-size: 0.9375rem;
  color: var(--color-gray-700);
}
.install-cmd code {
  font-family: var(--font-family-mono, ui-monospace, Menlo, Consolas, monospace);
  font-size: 0.9375em;
  background: var(--color-cloud-100);
  border-radius: 3px;
  padding: 2px 6px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .layout { grid-template-columns: 1fr; gap: 1rem; }
  .toc { position: static; }
}

/* 人读版教学章节 */
.guide-sec { margin: 2.25rem 0; }
.quick-fix {
  border-left: 4px solid var(--color-primary, #4242fa);
  background: color-mix(in srgb, var(--color-primary, #4242fa) 5%, transparent);
  padding: 1rem 1.375rem 1.25rem;
  border-radius: 0 10px 10px 0;
}
.quick-fix h2 { margin-top: 0; }
details.evidence {
  margin: 2rem 0;
  border: 1px solid var(--color-gray-200, #e6e8f0);
  border-radius: 10px;
  padding: 0.875rem 1.125rem;
}
details.evidence summary {
  cursor: pointer;
  font-weight: 600;
}
details.evidence[open] summary { margin-bottom: 0.75rem; }
details.evidence p { margin: 0.5rem 0; }

/* ---------- 正文冲突矩阵折叠块（tool-side：对子很长，默认收起） ---------- */
.content details.matrix {
  margin: 2.25rem 0;
  border: 1px solid var(--color-gray-200);
  border-radius: 12px;
  padding: 0 1.25rem 0.25rem;
  background: var(--color-cloud-100, transparent);
}
.content details.matrix > summary {
  cursor: pointer;
  list-style: none;
  padding: 1rem 0 0.75rem;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  user-select: none;
}
.content details.matrix > summary::-webkit-details-marker { display: none; }
.content details.matrix > summary::before {
  content: "▸ ";
  color: var(--color-gray-500);
  font-size: 0.9rem;
  transition: transform 150ms;
}
.content details.matrix[open] > summary::before { content: "▾ "; }
.content details.matrix > summary:hover { color: var(--color-primary); }
.content details.matrix > summary .matrix-hint {
  margin-left: 0.6rem;
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--color-gray-500);
}
.content details.matrix[open] > summary .matrix-hint { display: none; }
.content details.matrix table { margin-top: 0.25rem; }


/* ---------- 详细版教学节折叠（2026-08-30：正文按节可折叠，默认首节展开；冲突对子降级为小折叠块） ---------- */
.content details.dsec {
  margin: 1.5rem 0;
  border: 1px solid var(--color-gray-200, #e6e8f0);
  border-radius: 12px;
  padding: 0 1.25rem 0.25rem;
  background: var(--color-cloud-100, transparent);
}
.content details.dsec > summary {
  cursor: pointer;
  list-style: none;
  padding: 0.9rem 0 0.7rem;
  font-weight: 700;
  color: var(--color-text);
  user-select: none;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}
.content details.dsec > summary::-webkit-details-marker { display: none; }
.content details.dsec > summary::before {
  content: "▸ ";
  color: var(--color-gray-500);
  font-size: 0.9rem;
  transition: transform 150ms;
  flex: 0 0 auto;
}
.content details.dsec[open] > summary::before { content: "▾ "; }
.content details.dsec > summary:hover { color: var(--color-primary); }
.content details.dsec > summary h2 {
  display: inline;
  font-size: 1.125rem;
  margin: 0;
  line-height: 1.4;
}
.content details.dsec[open] > summary { border-bottom: 1px solid var(--color-gray-200, #e6e8f0); margin-bottom: 0.75rem; }
.content details.dsec p,
.content details.dsec ul,
.content details.dsec ol,
.content details.dsec table,
.content details.dsec pre { margin: 0.75rem 0; }
.content pre.has-copy { padding-top: 2.6rem; }



/* ---------- 深讲子节折叠（2026-08-30：教学五段式 · 快修可见/深讲收起） ---------- */
.content details.dsub {
  margin: 0.9rem 0 0.9rem 0.5rem;
  border-left: 3px solid var(--color-gray-200, #e6e8f0);
  padding: 0.1rem 0 0.1rem 1rem;
}
.content details.dsub > summary {
  cursor: pointer;
  list-style: none;
  padding: 0.35rem 0;
  font-weight: 600;
  color: var(--color-gray-700, #555);
  user-select: none;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}
.content details.dsub > summary::-webkit-details-marker { display: none; }
.content details.dsub > summary::before {
  content: "▸ ";
  color: var(--color-gray-400, #999);
  font-size: 0.85rem;
  transition: transform 150ms;
  flex: 0 0 auto;
}
.content details.dsub[open] > summary::before { content: "▾ "; }
.content details.dsub > summary:hover { color: var(--color-primary); }
.content details.dsub > summary h3 {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 600;
  border: none;
  padding: 0;
}
.content details.dsub[open] > summary h3 { color: var(--color-primary); }

/* ---------- 详细页头部互链（组合包 / 相关问题） ---------- */
.related-box {
  margin: 0.25rem auto 1.75rem;
  max-width: 900px;
  padding: 0.75rem 1.25rem;
  border: 1px dashed var(--color-gray-200, #e6e8f0);
  border-radius: 10px;
  background: var(--color-cloud-100, transparent);
  font-size: 0.92rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.6rem;
}
.related-box .related-h { margin: 0; }
.related-box a { font-weight: 600; }

/* ---------- 代码语法高亮（GitHub Light / GitHub Dark 配色，服务端 pygments 生成 .hl token） ---------- */
.hl .k, .hl .kc, .hl .kd, .hl .kn, .hl .kp, .hl .kr, .hl .kt { color: #cf222e; }
.hl .s, .hl .sb, .hl .sc, .hl .sd, .hl .s2, .hl .se, .hl .sh, .hl .si, .hl .sx, .hl .sr, .hl .s1, .hl .ss { color: #0a3069; }
.hl .c, .hl .ch, .hl .cm, .hl .c1, .hl .cs { color: #6e7781; font-style: italic; }
.hl .m, .hl .mb, .hl .mf, .hl .mh, .hl .mi, .hl .mo, .hl .il { color: #0550ae; }
.hl .nf, .hl .fm { color: #8250df; }
.hl .nt { color: #116329; }
.hl .na, .hl .nb { color: #0550ae; }
.hl .nv, .hl .vc, .hl .vg, .hl .vi, .hl .vm { color: #953800; }
.hl .o, .hl .p { color: #1f2328; }
.hl .err { color: #82071e; background: #ffebe9; }
.hl .gd { color: #82071e; background: #ffebe9; }
.hl .gi { color: #116329; background: #dafbe1; }
.hl .gh { color: #0550ae; font-weight: 600; }
.hl .w { color: #d0d7de; }
html[data-theme="dark"] .hl .k, html[data-theme="dark"] .hl .kc, html[data-theme="dark"] .hl .kd,
html[data-theme="dark"] .hl .kn, html[data-theme="dark"] .hl .kp, html[data-theme="dark"] .hl .kr,
html[data-theme="dark"] .hl .kt { color: #ff7b72; }
html[data-theme="dark"] .hl .s, html[data-theme="dark"] .hl .sb, html[data-theme="dark"] .hl .sc,
html[data-theme="dark"] .hl .sd, html[data-theme="dark"] .hl .s2, html[data-theme="dark"] .hl .se,
html[data-theme="dark"] .hl .sh, html[data-theme="dark"] .hl .si, html[data-theme="dark"] .hl .sx,
html[data-theme="dark"] .hl .sr, html[data-theme="dark"] .hl .s1, html[data-theme="dark"] .hl .ss { color: #a5d6ff; }
html[data-theme="dark"] .hl .c, html[data-theme="dark"] .hl .ch, html[data-theme="dark"] .hl .cm,
html[data-theme="dark"] .hl .c1, html[data-theme="dark"] .hl .cs { color: #8b949e; font-style: italic; }
html[data-theme="dark"] .hl .m, html[data-theme="dark"] .hl .mb, html[data-theme="dark"] .hl .mf,
html[data-theme="dark"] .hl .mh, html[data-theme="dark"] .hl .mi, html[data-theme="dark"] .hl .mo,
html[data-theme="dark"] .hl .il { color: #79c0ff; }
html[data-theme="dark"] .hl .nf, html[data-theme="dark"] .hl .fm { color: #d2a8ff; }
html[data-theme="dark"] .hl .nt { color: #7ee787; }
html[data-theme="dark"] .hl .na, html[data-theme="dark"] .hl .nb { color: #79c0ff; }
html[data-theme="dark"] .hl .nv, html[data-theme="dark"] .hl .vc, html[data-theme="dark"] .hl .vg,
html[data-theme="dark"] .hl .vi, html[data-theme="dark"] .hl .vm { color: #ffa657; }
html[data-theme="dark"] .hl .o, html[data-theme="dark"] .hl .p { color: #e6edf3; }
html[data-theme="dark"] .hl .err { color: #f85149; background: rgba(248, 81, 73, 0.1); }
html[data-theme="dark"] .hl .gd { color: #ffa198; background: rgba(248, 81, 73, 0.1); }
html[data-theme="dark"] .hl .gi { color: #56d364; background: rgba(46, 160, 67, 0.15); }
html[data-theme="dark"] .hl .gh { color: #79c0ff; font-weight: 600; }
html[data-theme="dark"] .hl .w { color: #30363d; }

/* 验证徽章（problem 页用：detail.css 独立于 site.css，vbadge 同款三态） */
.content .vbadge {
  display: inline-block;
  font-size: .78rem;
  font-weight: 600;
  padding: .1rem .55rem;
  border-radius: 20px;
  margin-left: .4rem;
  vertical-align: middle;
}
.content .vbadge-verified { background: #e7f6ec; color: #18794e; border: 1px solid #b7e4c7; }
.content .vbadge-stale    { background: #fff4e5; color: #ad6800; border: 1px solid #f5d9a8; }
.content .vbadge-candidate{ background: #f0f0f4; color: #6e6e78; border: 1px solid #d8d8e0; }

/* 原创数据外显（2026-09-01，AI 引用调研动作 4）：收录/验证/证据统计行 */
.verify-stats {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem .9rem;
  align-items: center;
  margin: 1rem 0 1.25rem;
  padding: .65rem .9rem;
  border: 1px solid #e4e4ec;
  border-radius: 10px;
  background: #fafafc;
  font-size: .86rem;
  color: #555;
}
.verify-stats .vs-item { display: inline-flex; align-items: center; gap: .3rem; white-space: nowrap; }
.verify-stats code { font-size: .8rem; padding: .05rem .35rem; border-radius: 6px; background: #f0f0f4; color: #6e6e78; }
.verify-stats .vbadge { margin-left: 0; }
html[data-theme="dark"] .verify-stats { border-color: #2d2d36; background: #17171d; color: #9d9da8; }
html[data-theme="dark"] .verify-stats code { background: #24242e; color: #b8b8c4; }

/* ---------- 移动端 ≤720px（2026-09-02）：目录整块隐藏——标题之下直接正文（掘金手机式，目录内返回链接在正文底部均有等价副本）；
   无 wrap 的详情页（problem/solution/combo 及 en 镜像）正文补 20px 内边距，与页头标题对齐，避免贴边。桌面端样式不受影响。 ---------- */
@media (max-width: 720px) {
  .toc {
    display: none;
  }
  /* 统一 20px：无 wrap 的 problem/solution/combo 与 wrap 版（detailed/domain 的 .wrap padding 会被 .layout 特异性清掉）都对齐页头标题 */
  main.layout {
    padding-inline: 20px;
  }
  /* 正文断行兜底（长 ASCII 标识符/URL 不撑破容器；pre 内代码特异性更高，保持横向滚动不断行） */
  .content code,
  .content p,
  .content li,
  .content td,
  .content th {
    overflow-wrap: anywhere;
  }
  .verify-stats .vs-item {
    white-space: normal;
    overflow-wrap: anywhere;
  }
}

/* ---------- 移动端 ≤720px · 字号/表格对齐掘金内容页（2026-09-02 实测掘金手机 390px：文章标题 h1 24px、正文 h2 20px/700、h3 18px/700、段落 16px/行高28/间距22、表格 12px 无边框浅灰表头、单元格 12px 7px）仅移动端，桌面端零改动 ---------- */
@media (max-width: 720px) {
  .page-head h1 {
    font-size: 1.5rem;
    line-height: 1.31;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
  }
  .content h2 {
    margin: 2.1875rem 0 0.625rem;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0;
    line-height: 1.7;
  }
  .content h3 {
    margin: 2.1875rem 0 0.625rem;
    font-size: 1.125rem;
    font-weight: 700;
    letter-spacing: 0;
    line-height: 1.55;
  }
  .content p {
    margin: 1.375rem 0;
  }
  .content > :first-child {
    margin-top: 0;
  }
  .content table {
    border-collapse: separate;
    border-spacing: 2px;
    font-size: 0.75rem;
  }
  .content th,
  .content td {
    padding: 0.75rem 0.4375rem;
    border-bottom: none;
  }
  .content thead th {
    background: var(--color-gray-50);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0;
    text-transform: none;
    color: var(--color-text);
  }
}