@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;600&family=Noto+Sans+SC:wght@400;500;600;700&family=Noto+Serif+SC:wght@600;700;800&display=swap");

/* ===== 代码语法高亮颜色增强 ===== */
/* 同时适配直接 .highlight 和 .highlighttable 内的 .highlight */
[data-md-color-scheme="default"] .md-typeset .highlight .k,
[data-md-color-scheme="default"] .md-typeset .highlight .kc,
[data-md-color-scheme="default"] .md-typeset .highlight .kd,
[data-md-color-scheme="default"] .md-typeset .highlight .kn,
[data-md-color-scheme="default"] .md-typeset .highlight .kp,
[data-md-color-scheme="default"] .md-typeset .highlight .kr,
[data-md-color-scheme="default"] .md-typeset .highlight .kt,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .k,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .kc,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .kd,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .kn,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .kp,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .kr,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .kt {
  color: #b42318;
}
[data-md-color-scheme="default"] .md-typeset .highlight .nf,
[data-md-color-scheme="default"] .md-typeset .highlight .fm,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .nf,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .fm {
  color: #175cd3;
}
[data-md-color-scheme="default"] .md-typeset .highlight .s,
[data-md-color-scheme="default"] .md-typeset .highlight .sa,
[data-md-color-scheme="default"] .md-typeset .highlight .sb,
[data-md-color-scheme="default"] .md-typeset .highlight .sc,
[data-md-color-scheme="default"] .md-typeset .highlight .sd,
[data-md-color-scheme="default"] .md-typeset .highlight .se,
[data-md-color-scheme="default"] .md-typeset .highlight .sh,
[data-md-color-scheme="default"] .md-typeset .highlight .si,
[data-md-color-scheme="default"] .md-typeset .highlight .sx,
[data-md-color-scheme="default"] .md-typeset .highlight .sr,
[data-md-color-scheme="default"] .md-typeset .highlight .s1,
[data-md-color-scheme="default"] .md-typeset .highlight .s2,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .s,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .sa,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .sb,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .sc,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .sd,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .se,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .sh,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .si,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .sx,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .sr,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .s1,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .s2 {
  color: #067647;
}
[data-md-color-scheme="default"] .md-typeset .highlight .c,
[data-md-color-scheme="default"] .md-typeset .highlight .ch,
[data-md-color-scheme="default"] .md-typeset .highlight .cm,
[data-md-color-scheme="default"] .md-typeset .highlight .cp,
[data-md-color-scheme="default"] .md-typeset .highlight .cpf,
[data-md-color-scheme="default"] .md-typeset .highlight .c1,
[data-md-color-scheme="default"] .md-typeset .highlight .cs,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .c,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .ch,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .cm,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .cp,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .cpf,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .c1,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .cs {
  color: #667085;
}

[data-md-color-scheme="slate"] .md-typeset .highlight .k,
[data-md-color-scheme="slate"] .md-typeset .highlight .kc,
[data-md-color-scheme="slate"] .md-typeset .highlight .kd,
[data-md-color-scheme="slate"] .md-typeset .highlight .kn,
[data-md-color-scheme="slate"] .md-typeset .highlight .kp,
[data-md-color-scheme="slate"] .md-typeset .highlight .kr,
[data-md-color-scheme="slate"] .md-typeset .highlight .kt,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .k,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .kc,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .kd,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .kn,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .kp,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .kr,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .kt {
  color: #ff6b6b;
}
[data-md-color-scheme="slate"] .md-typeset .highlight .nf,
[data-md-color-scheme="slate"] .md-typeset .highlight .fm,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .nf,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .fm {
  color: #7cc4ff;
}
[data-md-color-scheme="slate"] .md-typeset .highlight .s,
[data-md-color-scheme="slate"] .md-typeset .highlight .sa,
[data-md-color-scheme="slate"] .md-typeset .highlight .sb,
[data-md-color-scheme="slate"] .md-typeset .highlight .sc,
[data-md-color-scheme="slate"] .md-typeset .highlight .sd,
[data-md-color-scheme="slate"] .md-typeset .highlight .se,
[data-md-color-scheme="slate"] .md-typeset .highlight .sh,
[data-md-color-scheme="slate"] .md-typeset .highlight .si,
[data-md-color-scheme="slate"] .md-typeset .highlight .sx,
[data-md-color-scheme="slate"] .md-typeset .highlight .sr,
[data-md-color-scheme="slate"] .md-typeset .highlight .s1,
[data-md-color-scheme="slate"] .md-typeset .highlight .s2,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .s,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .sa,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .sb,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .sc,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .sd,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .se,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .sh,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .si,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .sx,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .sr,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .s1,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .s2 {
  color: #86efac;
}
[data-md-color-scheme="slate"] .md-typeset .highlight .c,
[data-md-color-scheme="slate"] .md-typeset .highlight .ch,
[data-md-color-scheme="slate"] .md-typeset .highlight .cm,
[data-md-color-scheme="slate"] .md-typeset .highlight .cp,
[data-md-color-scheme="slate"] .md-typeset .highlight .cpf,
[data-md-color-scheme="slate"] .md-typeset .highlight .c1,
[data-md-color-scheme="slate"] .md-typeset .highlight .cs,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .c,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .ch,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .cm,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .cp,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .cpf,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .c1,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .cs {
  color: #98a2b3;
}

/* 数字高亮（默认 Material 没配） */
[data-md-color-scheme="default"] .md-typeset .highlight .mi,
[data-md-color-scheme="default"] .md-typeset .highlight .mf,
[data-md-color-scheme="default"] .md-typeset .highlight .mh,
[data-md-color-scheme="default"] .md-typeset .highlight .mo,
[data-md-color-scheme="default"] .md-typeset .highlight .il,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .mi,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .mf,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .mh,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .mo,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .il {
  color: #7c2d12;
}

[data-md-color-scheme="slate"] .md-typeset .highlight .mi,
[data-md-color-scheme="slate"] .md-typeset .highlight .mf,
[data-md-color-scheme="slate"] .md-typeset .highlight .mh,
[data-md-color-scheme="slate"] .md-typeset .highlight .mo,
[data-md-color-scheme="slate"] .md-typeset .highlight .il,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .mi,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .mf,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .mh,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .mo,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .il {
  color: #fdba74;
}

/* bash 内置命令（Name.Builtin）高亮 */
[data-md-color-scheme="default"] .md-typeset .highlight .nb,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .nb {
  color: #b42318;
}
[data-md-color-scheme="slate"] .md-typeset .highlight .nb,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .nb {
  color: #ff6b6b;
}

/* bash 运算符/标点（Operator / Punctuation）高亮 */
[data-md-color-scheme="default"] .md-typeset .highlight .o,
[data-md-color-scheme="default"] .md-typeset .highlight .ow,
[data-md-color-scheme="default"] .md-typeset .highlight .p,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .o,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .ow,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .p {
  color: #b42318;
}
[data-md-color-scheme="slate"] .md-typeset .highlight .o,
[data-md-color-scheme="slate"] .md-typeset .highlight .ow,
[data-md-color-scheme="slate"] .md-typeset .highlight .p,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .o,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .ow,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .p {
  color: #ff6b6b;
}

/* bash 字符串插值（String.Interpol）高亮 */
[data-md-color-scheme="default"] .md-typeset .highlight .si,
[data-md-color-scheme="default"] .md-typeset .highlight .s2,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .si,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .s2 {
  color: #067647;
}
[data-md-color-scheme="slate"] .md-typeset .highlight .si,
[data-md-color-scheme="slate"] .md-typeset .highlight .s2,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .si,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .s2 {
  color: #86efac;
}

/* 寄存器/变量名高亮 */
[data-md-color-scheme="default"] .md-typeset .highlight .no,
[data-md-color-scheme="default"] .md-typeset .highlight .nv,
[data-md-color-scheme="default"] .md-typeset .highlight .vc,
[data-md-color-scheme="default"] .md-typeset .highlight .vg,
[data-md-color-scheme="default"] .md-typeset .highlight .vi,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .no,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .nv,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .vc,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .vg,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .vi {
  color: #6e59d9;
}

[data-md-color-scheme="slate"] .md-typeset .highlight .no,
[data-md-color-scheme="slate"] .md-typeset .highlight .nv,
[data-md-color-scheme="slate"] .md-typeset .highlight .vc,
[data-md-color-scheme="slate"] .md-typeset .highlight .vg,
[data-md-color-scheme="slate"] .md-typeset .highlight .vi,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .no,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .nv,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .vc,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .vg,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .vi {
  color: #c084fc;
}

/* 标签/标号高亮 (红色) */
[data-md-color-scheme="default"] .md-typeset .highlight .nl,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .nl,
[data-md-color-scheme="default"] .md-typeset .highlight .na,
[data-md-color-scheme="default"] .md-typeset .highlighttable .highlight .na {
  color: #b42318;
}
[data-md-color-scheme="slate"] .md-typeset .highlight .nl,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .nl,
[data-md-color-scheme="slate"] .md-typeset .highlight .na,
[data-md-color-scheme="slate"] .md-typeset .highlighttable .highlight .na {
  color: #ff6b6b;
}

/* ===== 字体 ===== */
.md-typeset h1, .md-header__title {
  font-family: "Noto Serif SC", serif;
  font-weight: 800;
  letter-spacing: -0.01em;
}
body, .md-typeset, .md-typeset h2, .md-typeset h3, .md-typeset h4,
.md-typeset h5, .md-typeset h6, .md-nav {
  font-family: "JetBrains Mono", "Noto Sans SC", sans-serif;
}
/* 搜索面板（输入框 + 结果列表）渲染在 Shadow DOM 里，外部选择器进不去。
   其内部样式读 --md-text-font-family 变量，而 CSS 变量能穿透 shadow 边界。
   注意必须写在 body 上覆盖主题 body 里的同名默认声明（写在 :root 上会被 body 覆盖）。 */
body {
  --md-text-font-family: "JetBrains Mono", "Noto Sans SC", sans-serif;
}
code, kbd, pre, .md-typeset code, .md-typeset pre {
  font-family: "JetBrains Mono", "Noto Sans SC", monospace;
}

/* ===== 代码块 ===== */
.md-typeset pre > code {
  font-size: inherit;
  line-height: 1.6;
}
.md-typeset .highlight pre, .md-typeset .highlighttable {
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 0.5rem;
}
.md-typeset .highlight pre {
  padding: 0.8rem 1rem;
}
.md-typeset .highlight pre, .md-typeset .highlighttable .code pre {
  white-space: pre;
  overflow-x: auto;
  overflow-y: hidden;
}
.md-typeset .highlighttable {
  table-layout: auto;
  width: 100%;
}
.md-typeset .highlighttable .linenos, .md-typeset .highlighttable .code {
  vertical-align: top;
}
.md-typeset .highlighttable .linenos {
  width: 2.5rem;
  min-width: 2.5rem;
  max-width: 2.5rem;
  padding: 0.8rem 0.3rem;
  border-right: 1px solid var(--md-default-fg-color--lightest);
  user-select: none;
  opacity: 0.75;
  font-size: inherit;
  line-height: 1.6;
  background-color: transparent !important;
  text-align: right;
}
.md-typeset .highlighttable .linenos pre {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  padding: 0 !important;
}
.md-typeset .highlighttable .code {
  width: auto;
  padding-left: 0.5rem;
}

/* ===== 行内代码 ===== */
.md-typeset code:not(pre code) {
  background-color: #eef2f6;
  border: 1px solid #e0e4ea;
  border-radius: 4px;
  padding: 0.15em 0.4em;
  font-size: 0.82em;
  color: #c7254e;
  font-weight: 500;
}
[data-md-color-scheme="slate"] .md-typeset code:not(pre code) {
  background-color: #1a1f2e;
  border-color: #2a2f3e;
  color: #e06c75;
}

/* ===== 段落缩进（已禁用） ===== */

/* ===== 列表 ===== */
.md-typeset ol {
  list-style-position: outside;
  padding-left: 2.2em;
}
.md-typeset ol > li {
  padding-left: 0.15em;
}

/* ===== 标题编号 ===== */
.md-content__inner { counter-reset: section; }
.md-content__inner h2 {
  counter-increment: section;
  counter-reset: subsection;
}
.md-content__inner h2::before {
  content: counter(section) ". ";
  color: var(--md-default-fg-color--light);
  font-weight: 700;
}
.md-content__inner h3 {
  counter-increment: subsection;
  counter-reset: subsubsection;
}
.md-content__inner h3::before {
  content: counter(section) "." counter(subsection) " ";
  color: var(--md-default-fg-color--light);
  font-weight: 700;
}
.md-content__inner h4 {
  counter-increment: subsubsection;
}
.md-content__inner h4::before {
  content: counter(section) "." counter(subsection) "." counter(subsubsection) " ";
  color: var(--md-default-fg-color--light);
  font-weight: 700;
}

/* ===== GitHub 贡献图 ===== */
.github-calendar-wrap {
  max-width: 760px;
  margin: 1rem auto 0;
}

.github-calendar-wrap:not([data-ghc-state="loading"]) .ghc-loading {
  display: none;
}

.ghc-loading,
.ghc-error,
.ghc-shell {
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 6px;
  background: var(--md-default-bg-color);
}

.ghc-loading,
.ghc-error {
  padding: 1.4rem 0.75rem;
  text-align: center;
  color: var(--md-default-fg-color--light);
  font-size: 0.75rem;
}

.ghc-error {
  color: var(--md-primary-fg-color, #b42318);
}

.ghc-shell {
  overflow: hidden;
  font-family: "Inter", "Noto Sans SC", sans-serif;
}

.ghc-header {
  padding: 0.85rem 1rem 0.25rem;
}

.md-typeset .ghc-title {
  margin: 0;
  color: var(--md-default-fg-color);
  font-family: inherit;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
}

.md-content__inner .ghc-title::before,
.md-content__inner .ghc-overview-title::before {
  content: none;
}

.ghc-calendar-scroller {
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 0.45rem 1rem 0.6rem;
}

.ContributionCalendar-grid {
  border-collapse: separate;
  border-spacing: 3px;
  overflow: hidden;
  position: relative;
  table-layout: fixed;
}

.ghc-weekday-col {
  width: 28px;
}

.ghc-week-col {
  width: 10px;
}

.ContributionCalendar-grid tr {
  height: 10px;
}

.ContributionCalendar-grid thead tr {
  height: 13px;
}

.ContributionCalendar-label {
  width: 10px;
  min-width: 10px;
  padding: 0;
  color: var(--md-default-fg-color--light);
  font-family: inherit;
  font-size: 12px;
  font-weight: 400;
  line-height: 1;
  text-align: left;
  white-space: nowrap;
  user-select: none;
}

.ghc-corner,
.ghc-day-label {
  width: 28px;
  min-width: 28px;
}

.ghc-day-label {
  position: relative;
}

.ghc-day-label span:not(.sr-only) {
  position: absolute;
  bottom: -3px;
}

.ContributionCalendar-day,
.ghc-empty-day {
  width: 10px;
  min-width: 10px;
  height: 10px;
  padding: 0;
}

.ContributionCalendar-day {
  box-sizing: border-box;
  border: 0.5px solid;
  border-radius: 2px;
  outline: none;
  transition: opacity 0.12s ease;
}

.ContributionCalendar-day:hover,
.ContributionCalendar-day:focus {
  opacity: 0.7;
}

.ContributionCalendar-day:focus {
  outline: 2px solid var(--md-accent-fg-color);
  outline-offset: 1px;
}

[data-md-color-scheme="default"] .ContributionCalendar-day[data-level="0"] { background-color: rgb(240, 242, 245); border-color: #E4E8EB; }
[data-md-color-scheme="default"] .ContributionCalendar-day[data-level="1"] { background-color: rgb(172, 238, 187); border-color: transparent; }
[data-md-color-scheme="default"] .ContributionCalendar-day[data-level="2"] { background-color: rgb(75, 193, 107); border-color: transparent; }
[data-md-color-scheme="default"] .ContributionCalendar-day[data-level="3"] { background-color: rgb(44, 164, 79); border-color: transparent; }
[data-md-color-scheme="default"] .ContributionCalendar-day[data-level="4"] { background-color: rgb(16, 99, 41); border-color: transparent; }

[data-md-color-scheme="slate"] .ContributionCalendar-day[data-level="0"] {
  background-color: #161b22; border-color: #1c2330;
}
[data-md-color-scheme="slate"] .ContributionCalendar-day[data-level="1"] { background-color: #0e4429; border-color: transparent; }
[data-md-color-scheme="slate"] .ContributionCalendar-day[data-level="2"] { background-color: #006d32; border-color: transparent; }
[data-md-color-scheme="slate"] .ContributionCalendar-day[data-level="3"] { background-color: #26a641; border-color: transparent; }
[data-md-color-scheme="slate"] .ContributionCalendar-day[data-level="4"] { background-color: #39d353; border-color: transparent; }

.ghc-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.35rem 1rem 0.8rem;
  color: var(--md-default-fg-color--light);
  font-size: 12px;
}

.ghc-help {
  color: var(--md-default-fg-color--light) !important;
}

.ghc-legend {
  display: flex;
  align-items: center;
  gap: 0.28rem;
  white-space: nowrap;
}

.ghc-legend-day {
  display: inline-block;
}

.ghc-overview {
  border-top: 1px solid var(--md-default-fg-color--lightest);
  padding: 0.85rem 1rem 1rem;
}

.md-typeset .ghc-overview-title {
  margin: 0 0 0.35rem;
  color: var(--md-default-fg-color);
  font-family: inherit;
  font-size: 14px;
  font-weight: 400;
}

.md-typeset .ghc-overview-text,
.md-typeset .ghc-overview-meta {
  margin: 0.15rem 0;
  color: var(--md-default-fg-color--light);
  font-size: 12px;
  line-height: 1.45;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media screen and (max-width: 44rem) {
  .ghc-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

/* ===== 左上角 BillFeng Logo ===== */
.bf-logo {
  display: block;
  height: 1.45rem;   /* Material 默认 logo 约 1.2rem，放大一档 */
  width: auto;
}
.bf-logo__text {
  font-family: "Courier New", Courier, ui-monospace, monospace;
  font-size: 40px;
  font-weight: 700;
  letter-spacing: 0;
  fill: var(--md-default-fg-color);
}

/* ===== 页面信息 ===== */
.page-updated-top {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin: -0.85rem 0 1.35rem;
  color: var(--md-default-fg-color--light);
  font-size: 0.68rem;
  line-height: 1.5;
}

.page-updated-top[hidden],
.page-info__item[hidden] {
  display: none !important;
}

.page-updated-top__time {
  color: var(--md-default-fg-color--lighter);
  font-variant-numeric: tabular-nums;
}

.page-info {
  display: grid;
  gap: 0.25rem;
  margin: 2rem 0 1.2rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--md-default-fg-color--lightest);
  color: var(--md-default-fg-color--light);
  font-size: 0.68rem;
}

.page-info__item {
  display: flex !important;
  align-items: center;
  gap: 0.5rem;
  min-height: 1.4rem;
}

.page-info__label {
  width: 14.5em;
  flex-shrink: 0;
}

.page-info__value {
  color: var(--md-default-fg-color--lighter);
  font-variant-numeric: tabular-nums;
  min-width: 0;
}

.page-info__stars img {
  display: block;
}

/* ===== 底层虚线网格背景（视差） ===== */
/*
   SVG stroke-dasharray 实现真正虚线，不是 gradient 色块。
   80px 方格，3px 线段 + 5px 间隙。
*/
[data-md-color-scheme="default"] body {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='80'%3E%3Cline x1='0' y1='0' x2='80' y2='0' stroke='rgba(100,100,100,0.22)' stroke-width='1' stroke-dasharray='3 5'/%3E%3Cline x1='0' y1='0' x2='0' y2='80' stroke='rgba(100,100,100,0.22)' stroke-width='1' stroke-dasharray='3 5'/%3E%3C/svg%3E");
  background-size: 80px 80px;
  background-attachment: fixed;
}

[data-md-color-scheme="slate"] body {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='80'%3E%3Cline x1='0' y1='0' x2='80' y2='0' stroke='rgba(180,180,180,0.13)' stroke-width='1' stroke-dasharray='3 5'/%3E%3Cline x1='0' y1='0' x2='0' y2='80' stroke='rgba(180,180,180,0.13)' stroke-width='1' stroke-dasharray='3 5'/%3E%3C/svg%3E");
  background-size: 80px 80px;
  background-attachment: fixed;
}

/* 正文区域遮盖网格，避免虚线与文字打架 */
.md-content {
  background-color: var(--md-default-bg-color);
  box-shadow: 0 0 15px rgba(0,0,0,0.03);
}
[data-md-color-scheme="slate"] .md-content {
  box-shadow: 0 0 15px rgba(0,0,0,0.08);
}

/* 顶部导航栏遮盖网格 */
.md-header,
.md-tabs {
  background-color: var(--md-default-bg-color);
}

/* 导航标签列表左侧增加内边距，与正文左侧对齐 */
.md-tabs__list {
  padding-left: 0rem;
}

/* 页面整体加宽 */
.md-grid {
  max-width: 64rem;
}

/* ================================================================
   PDF 加载进度组件（PDF.js canvas 渲染）
   ================================================================ */

/* ---- 查看器外壳 ---- */
.pdf-viewer {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  background: var(--md-code-bg-color, #f5f5f5);
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
  margin: 1em 0;
}

/* ---- 工具栏 ---- */
.pdf-viewer-toolbar {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 12px;
  background: var(--md-default-bg-color, #fff);
  border-bottom: 1px solid var(--md-default-fg-color--lightest, #e0e0e0);
  position: sticky;
  top: 0;
  z-index: 3;
}

.pdf-viewer-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--md-typeset-color, #555);
  cursor: pointer;
  transition: background 0.15s;
}

.pdf-viewer-btn:hover:not(:disabled) {
  background: var(--md-default-fg-color--lightest, #e8e8e8);
}

.pdf-viewer-btn:disabled {
  opacity: 0.3;
  cursor: default;
}

.pdf-viewer-page {
  font-size: 0.85rem;
  font-family: "JetBrains Mono", "SF Mono", monospace;
  color: var(--md-typeset-color, #555);
  min-width: 64px;
  text-align: center;
  user-select: none;
}

.pdf-viewer-spacer {
  flex: 1;
}

.pdf-viewer-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  color: var(--md-typeset-color--light, #888);
  transition: color 0.15s, background 0.15s;
}

.pdf-viewer-download:hover {
  color: var(--md-accent-fg-color, #4051b5);
  background: var(--md-default-fg-color--lightest, #e8e8e8);
}

/* ---- 画布滚动区 ---- */
.pdf-viewer-canvases {
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  background: var(--md-code-bg-color, #525252);
  /* 高度由 JS 动态设置为固定值，配合 overflow 实现折叠滚动 */
}

.pdf-viewer-page-wrap {
  display: flex;
  justify-content: center;
  padding: 4px 0;
}

.pdf-viewer-canvas {
  display: block;
  max-width: 100%;
  height: auto;
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
  /* 3x 渲染 + auto 插值 = 接近 SVG 清晰度 */
  image-rendering: auto;
}

/* ---- 加载覆盖层 ---- */
.pdf-loader-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: var(--md-default-bg-color, #fff);
  z-index: 2;
  transition: opacity 0.4s ease;
  padding: 24px;
  /* 受外壳 min-height 约束，不会撑满屏幕 */
}

/* ---- spinner ---- */
.pdf-spinner {
  width: 40px;
  height: 40px;
  color: var(--md-accent-fg-color, #4051b5);
  animation: pdf-spin 0.9s linear infinite;
}

@keyframes pdf-spin {
  to { transform: rotate(360deg); }
}

/* ---- 文字 ---- */
.pdf-loader-text {
  font-size: 0.9rem;
  color: var(--md-typeset-color, #555);
  font-weight: 500;
}

/* ---- 进度条 ---- */
.pdf-loader-bar-track {
  width: min(320px, 80%);
  height: 6px;
  background: var(--md-default-fg-color--lightest, #e0e0e0);
  border-radius: 3px;
  overflow: hidden;
}

.pdf-loader-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--md-accent-fg-color, #4051b5);
  border-radius: 3px;
  transition: width 0.15s linear;
}

/* ---- 详情（已下载/总大小） ---- */
.pdf-loader-detail {
  font-size: 0.75rem;
  color: var(--md-typeset-color--light, #999);
  font-family: "JetBrains Mono", "SF Mono", monospace;
}

/* ---- 错误提示 ---- */
.pdf-viewer-error {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  color: #e53e3e;
  font-size: 0.9rem;
  background: var(--md-default-bg-color, #fff);
  z-index: 3;
}

/* ---- 暗色模式 ---- */
[data-md-color-scheme="slate"] .pdf-viewer {
  background: var(--md-code-bg-color, #1e1e2e);
}

[data-md-color-scheme="slate"] .pdf-loader-overlay {
  background: var(--md-default-bg-color, #1e1e2e);
}

[data-md-color-scheme="slate"] .pdf-loader-bar-track {
  background: rgba(255,255,255,0.12);
}

[data-md-color-scheme="slate"] .pdf-viewer-toolbar {
  background: var(--md-default-bg-color, #1a1a2e);
  border-color: rgba(255,255,255,0.08);
}

[data-md-color-scheme="slate"] .pdf-viewer-canvases {
  background: var(--md-code-bg-color, #1e1e2e);
}

/* ===== 打字机效果 ===== */
.typed-text {
  font-family: "JetBrains Mono", "Noto Sans SC", sans-serif;
}

/* ===== 打字机光标 ===== */
.typed-text .typed-cursor,
.typed-cursor-standalone {
  font-family: "JetBrains Mono", "Noto Sans SC", sans-serif;
  animation: blink 0.7s step-end infinite;
}

[data-md-color-scheme="default"] .typed-text,
[data-md-color-scheme="default"] .typed-text .typed-cursor,
[data-md-color-scheme="default"] .typed-cursor-standalone {
  color: #000;
}

[data-md-color-scheme="slate"] .typed-text,
[data-md-color-scheme="slate"] .typed-text .typed-cursor,
[data-md-color-scheme="slate"] .typed-cursor-standalone {
  color: #fff;
}

@keyframes blink {
  50% { opacity: 0; }
}