/* Reading surfaces only. Native PBR is an independent document. */
.reading-content{font:inherit;line-height:1.65;overflow-wrap:anywhere;min-width:0;max-width:72ch;color:var(--ink)}
.reading-content>:first-child{margin-top:0}.reading-content>:last-child{margin-bottom:0}
.reading-content p{white-space:pre-line;margin:.65em 0}.reading-content h3{font-size:1em;font-weight:700;margin:1.25em 0 .45em;line-height:1.4}
.reading-content :is(ol,ul){padding-inline-start:1.5em;margin:.65em 0}.reading-content li{padding-inline-start:.15em;margin:.4em 0}
.reading-content a{color:var(--accent);text-underline-offset:3px;text-decoration-thickness:1px}.reading-content a:hover{text-decoration-thickness:2px}
.reading-content a:focus-visible,.reading-sources a:focus-visible,.lesson-extras a:focus-visible,.lesson-extras summary:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:3px}
.reading-content code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.88em;background:var(--surface-2);padding:.12em .28em;border-radius:4px;box-decoration-break:clone}
.reading-content pre{max-width:100%;overflow:auto;background:var(--surface-2);padding:12px;border-radius:8px;white-space:pre;line-height:1.5}.reading-content pre code{padding:0;background:none}
.reading-content blockquote{margin:.8em 0;padding:0 0 0 12px;border-left:1px solid var(--line);color:var(--muted);white-space:pre-line}
.assistant-panel.messenger-panel .assistant-message.assistant{background:transparent;padding:6px 0;border-radius:0;max-width:100%;width:100%;min-width:0}
.assistant-panel.messenger-panel .assistant-message .reading-content{font-size:14px}.assistant-message .reading-content p{white-space:pre-line}
.assistant-message .reading-content .reading-citation{font-size:.8em;vertical-align:baseline;white-space:nowrap;font-weight:650}
.reading-sources{margin-top:10px;border-top:1px solid var(--line);padding-top:6px}.reading-sources summary{min-height:36px;align-content:center;font-size:12px;cursor:pointer;color:var(--muted)}
.reading-sources ol{list-style:none;margin:4px 0 0;padding:0}.reading-sources li{display:flex;gap:8px;padding:7px 0;scroll-margin-top:12px;min-width:0;line-height:1.45}
.reading-sources .source-citation{display:inline;color:var(--muted);font-variant-numeric:tabular-nums;flex:0 0 auto;margin:0}
.reading-sources li>div{min-width:0}.reading-sources strong{font-weight:600}.reading-sources a{color:var(--ink);text-decoration:none}.reading-sources a:hover{text-decoration:underline;text-underline-offset:3px}
.reading-sources small{display:flex;align-items:center;gap:5px;margin-top:3px;color:var(--muted);font-size:11px;font-variant-numeric:tabular-nums}
.lesson-extras{max-width:74ch;min-width:0;margin:20px 0}.lesson-reading-section{padding:16px 0;border-top:1px solid var(--line)}
.lesson-reading-section>summary{cursor:pointer;font-size:14px;font-weight:650;min-height:36px;align-content:center}.lesson-reading-section>h3{font-size:14px;margin:0 0 12px;font-weight:650}
.lesson-reading-section[open]>.reading-content{margin-top:10px}.lesson-language-files{list-style:none;padding:0;margin:0;display:flex;gap:8px 24px;flex-wrap:wrap}
.lesson-language-files li{display:flex;align-items:center;gap:12px;min-height:40px;font-size:13px}.lesson-language-files a{color:var(--accent);text-underline-offset:3px}
.lesson-audio-track{display:grid;grid-template-columns:minmax(80px,1fr) minmax(0,3fr);align-items:center;gap:16px;margin:10px 0}.lesson-audio-track label{font-size:13px}.lesson-audio-track audio{width:100%;min-width:0;height:40px}
.lesson-files-empty{font-size:12px;color:var(--muted);margin:8px 0}.lesson-media-manager{padding-top:16px;border-top:1px solid var(--line)}
.lesson-media-manager>summary{cursor:pointer;min-height:40px;align-content:center;font-size:14px;font-weight:650}.lesson-media-manager form{display:grid;gap:10px;margin:16px 0 20px}.lesson-media-manager form>.button{justify-self:start}
.lesson-media-language{display:flex;gap:16px;flex-wrap:wrap}.lesson-media-language label{display:grid;gap:6px;font-size:12px;max-width:100%}.lesson-media-language input{width:180px;max-width:100%}
@media(max-width:600px){.lesson-extras{margin:16px 0}.lesson-audio-track{grid-template-columns:1fr;gap:6px}.reading-content pre{font-size:12px}.reading-sources li{padding:8px 0}}