/* 书中自定义环境 → 自定义 admonition 类型
   teaching  = \begin{teachingnote}
   interview = \begin{interviewq}
   career    = \begin{careeradvice}
   advice    = \begin{professionaladvice} */
:root {
  --md-admonition-icon--teaching: url('data:image/svg+xml;charset=utf-8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M12 3 1 9l11 6 9-4.91V17h2V9M5 13.18v4L12 21l7-3.82v-4L12 17z"/></svg>');
  --md-admonition-icon--interview: url('data:image/svg+xml;charset=utf-8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M11 18h2v-2h-2zm1-16A10 10 0 0 0 2 12a10 10 0 0 0 10 10 10 10 0 0 0 10-10A10 10 0 0 0 12 2m0 18c-4.41 0-8-3.59-8-8s3.59-8 8-8 8 3.59 8 8-3.59 8-8 8m0-14a4 4 0 0 0-4 4h2a2 2 0 0 1 2-2 2 2 0 0 1 2 2c0 2-3 1.75-3 5h2c0-2.25 3-2.5 3-5a4 4 0 0 0-4-4"/></svg>');
  --md-admonition-icon--career: url('data:image/svg+xml;charset=utf-8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M10 2h4a2 2 0 0 1 2 2v2h4a2 2 0 0 1 2 2v11a2 2 0 0 1-2 2H4a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h4V4a2 2 0 0 1 2-2m4 4V4h-4v2z"/></svg>');
  --md-admonition-icon--advice: url('data:image/svg+xml;charset=utf-8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M12 2a7 7 0 0 1 7 7c0 2.38-1.19 4.47-3 5.74V17a1 1 0 0 1-1 1H9a1 1 0 0 1-1-1v-2.26C6.19 13.47 5 11.38 5 9a7 7 0 0 1 7-7M9 21v-1h6v1a1 1 0 0 1-1 1h-4a1 1 0 0 1-1-1"/></svg>');
}
.md-typeset .admonition.teaching,  .md-typeset details.teaching  { border-color: #3f51b5; }
.md-typeset .admonition.interview, .md-typeset details.interview { border-color: #e91e63; }
.md-typeset .admonition.career,    .md-typeset details.career    { border-color: #009688; }
.md-typeset .admonition.advice,    .md-typeset details.advice    { border-color: #ff9800; }
.md-typeset .teaching  > .admonition-title, .md-typeset .teaching  > summary { background-color: rgba(63, 81, 181, .1); }
.md-typeset .interview > .admonition-title, .md-typeset .interview > summary { background-color: rgba(233, 30, 99, .1); }
.md-typeset .career    > .admonition-title, .md-typeset .career    > summary { background-color: rgba(0, 150, 136, .1); }
.md-typeset .advice    > .admonition-title, .md-typeset .advice    > summary { background-color: rgba(255, 152, 0, .1); }
.md-typeset .teaching  > .admonition-title::before, .md-typeset .teaching  > summary::before { background-color: #3f51b5; -webkit-mask-image: var(--md-admonition-icon--teaching);  mask-image: var(--md-admonition-icon--teaching); }
.md-typeset .interview > .admonition-title::before, .md-typeset .interview > summary::before { background-color: #e91e63; -webkit-mask-image: var(--md-admonition-icon--interview); mask-image: var(--md-admonition-icon--interview); }
.md-typeset .career    > .admonition-title::before, .md-typeset .career    > summary::before { background-color: #009688; -webkit-mask-image: var(--md-admonition-icon--career);    mask-image: var(--md-admonition-icon--career); }
.md-typeset .advice    > .admonition-title::before, .md-typeset .advice    > summary::before { background-color: #ff9800; -webkit-mask-image: var(--md-admonition-icon--advice);    mask-image: var(--md-admonition-icon--advice); }

/* TikZ 编译出的 SVG 是黑字透明底：深色模式下垫白底，保证可读 */
.md-typeset figure img[src$=".svg"] {
  background: #fff;
  padding: .8rem;
  border-radius: .3rem;
}
.md-typeset figcaption { max-width: 40rem; }