.math-content,.question-slide,.option span,.lesson-video{max-width:100%;overflow-wrap:anywhere;min-width:0}
mjx-container[display=true]{max-width:100%;overflow-x:auto;overflow-y:hidden;padding:6px 0}
.math-toolbar{display:flex;gap:6px;flex-wrap:wrap;margin:5px 0}
.math-toolbar button{width:40px;height:40px;border:1px solid var(--color-control-border);background:var(--color-surface);color:var(--color-text);border-radius:var(--radius-sm);cursor:pointer;font-size:17px}
.math-preview{min-height:40px;padding:8px 0;color:var(--color-text);white-space:pre-wrap;overflow-wrap:anywhere}
.math-preview:empty{display:none}
.bulk-question{padding:20px 0;border-bottom:1px solid var(--color-line);min-width:0}
.bulk-question h2{font-size:18px;margin:0}
.bulk-actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:16px 0}
.bulk-actions input[type=file]{max-width:100%}
.bulk-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.lesson-video{display:block;width:100%;aspect-ratio:16/9;border:0;margin:20px 0;background:var(--color-surface-soft)}
.question-panel,.exam-sidebar,.admin-content,.admin-sidebar,.field{min-width:0}
.admin-head{flex-wrap:wrap}.admin-head h1{overflow-wrap:anywhere}
.exam-review{width:min(520px,calc(100% - 32px));border:1px solid var(--color-line);border-radius:var(--radius-sm);padding:24px;color:var(--color-text)}
.exam-review::backdrop{background:rgba(0,0,0,.4)}
.option{align-items:flex-start}.option input{flex-shrink:0}.option span{white-space:pre-wrap}
[hidden]{display:none!important}
@media(max-width:640px){.bulk-options{grid-template-columns:1fr}.bulk-actions>*{max-width:100%}.exam-bottom{flex-wrap:wrap;gap:8px}.form-grid{min-width:0}}
.math-toolbar select{width:auto;min-width:80px;max-width:130px;min-height:40px;border:1px solid var(--color-control-border);border-radius:var(--radius-sm);background:var(--color-surface);color:var(--color-text);padding:3px 6px;font-size:13px}.math-toolbar button:focus-visible,.math-toolbar select:focus-visible{outline:2px solid var(--color-royal-indigo);outline-offset:2px}