.rich-reading{font-size:15px;line-height:1.85;color:#263449;overflow-wrap:anywhere;min-width:0;white-space:normal}
.rich-reading>:first-child{margin-top:0}.rich-reading>:last-child{margin-bottom:0}
.rich-reading p{margin:.65em 0}.rich-reading h1,.rich-reading h2,.rich-reading h3,.rich-reading h4{font-weight:700;line-height:1.45;color:#17385d;margin:1.35em 0 .55em}
.rich-reading h1{font-size:1.5em}.rich-reading h2{font-size:1.25em}.rich-reading h3{font-size:1.1em}
.rich-reading ul,.rich-reading ol{padding-left:1.6em;margin:.75em 0}.rich-reading ul{list-style:disc}.rich-reading ol{list-style:decimal}
.rich-reading li{margin:.3em 0}.rich-reading blockquote{border-left:3px solid #5991c7;padding:.25em 1em;background:#f0f6fd;color:#4d6077;margin:1em 0;border-radius:0 8px 8px 0}
.rich-reading pre{background:#14253a;color:#edf4ff;border-radius:12px;padding:18px;overflow:auto;white-space:pre;line-height:1.65;font-size:13px;margin:1em 0}
.rich-reading :not(pre)>code{background:#edf2f8;color:#285b87;padding:2px 5px;border-radius:4px;font-size:.9em}
.rich-reading table{display:block;max-width:100%;overflow:auto;border-collapse:collapse;margin:1em 0}.rich-reading th,.rich-reading td{border:1px solid #dae4ee;padding:9px 14px;text-align:left}.rich-reading th{background:#eff5fb;font-weight:600}
.rich-reading a{color:#2465a8;text-decoration:underline;text-underline-offset:3px}.rich-reading hr{border:0;border-top:1px solid #dce6f0;margin:1.5em 0}
.rich-reading .katex-display,.rich-reading .math-block{overflow-x:auto;overflow-y:hidden;padding:12px 4px;max-width:100%}.rich-reading .katex{font-size:1.12em;overflow-wrap:normal}.reading-plain{white-space:pre-wrap}
.reading-dialog-overlay{position:fixed;inset:0;z-index:1500;background:#152a4566;backdrop-filter:blur(5px);display:flex;align-items:center;justify-content:center;padding:24px}
.reading-dialog{width:min(100%,460px);background:#fff;border:1px solid #dfE7f1;border-radius:18px;padding:28px;box-shadow:0 24px 80px #0e294833}
.reading-dialog h2{font-size:20px;font-weight:700;color:#183858}.reading-dialog p{font-size:14px;line-height:1.75;color:#64768b;margin:12px 0 20px}.reading-dialog label{font-size:13px;color:#53657c;display:block}
.reading-dialog input{display:block;width:100%;border:1px solid #bbcddd;border-radius:9px;padding:11px 12px;margin-top:8px;outline-color:#417db6;color:#183858}
.reading-dialog-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:24px}.reading-dialog button{padding:9px 18px;border:1px solid #d9e3ed;border-radius:8px;color:#43566c;font-size:14px}.reading-dialog .is-primary{background:#215f9b;color:#fff;border-color:#215f9b}.reading-dialog .is-danger{background:#b93838;color:white;border-color:#b93838}
.knowledge-reader-toolbar{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:12px 0}.knowledge-reader-toolbar input{flex:1;min-width:130px;border:1px solid #d7e2ef;border-radius:8px;padding:9px 12px;background:#fff}.knowledge-reader-toolbar button{border:1px solid #d7e2ef;border-radius:8px;padding:8px 12px;background:#fff;color:#315b88}
.knowledge-page{background:#fff;border:1px solid #e0e8f0;border-radius:12px;padding:22px;margin-bottom:16px}.knowledge-page header{font-size:12px;color:#708096;display:flex;justify-content:space-between;margin-bottom:14px}.knowledge-page details{margin-top:16px;color:#708096;font-size:12px}.knowledge-page pre{white-space:pre-wrap;overflow-wrap:anywhere}
/* Keep the classroom navigation, while giving content a calmer visual hierarchy. */
body{background:#f3f6fa!important;color:#20334c}body>div>main,body main{background-color:#f5f7fb}
[data-assistant-layout]{background:radial-gradient(ellipse at 85% 0%,#e5effb88,transparent 55%),#f7f9fc}
[data-assistant-history]{background:#f0f4f9!important;border-right-color:#dae4ef!important}
[data-assistant-conversation-select]{border-radius:9px}[data-assistant-message-id] .bg-surface{box-shadow:0 3px 16px #24446507;border-color:#e1e9f2}
main>header{background:#ffffffec!important;border-bottom:1px solid #dfe7f1!important;box-shadow:0 2px 10px #1b385806}
main .bg-surface.rounded-lg{border-radius:14px;box-shadow:0 4px 20px #1d3c6108;border-color:#e0e7f0}
button,input,textarea,select{transition:background-color .15s,border-color .15s,box-shadow .15s}button:focus-visible,a:focus-visible{outline:2px solid #4c8ac5;outline-offset:3px}button:disabled{opacity:.55;cursor:not-allowed}
textarea:focus,input:focus{box-shadow:0 0 0 3px #3476b514}::selection{background:#cae0f8}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}
[data-edutwin-sidebar]{background:linear-gradient(165deg,#163b63 0%,#10243e 80%)!important;border-right:0!important;box-shadow:6px 0 24px #183a5912;color:#d8e5f3}
[data-edutwin-sidebar] .text-primary,[data-edutwin-sidebar] .text-on-surface,[data-edutwin-sidebar] .text-on-background{color:#f3f8ff!important}
[data-edutwin-sidebar] .text-on-surface-variant{color:#b4c8df!important}
[data-edutwin-sidebar] a[data-route]{padding:12px 14px;margin-bottom:5px;border:1px solid transparent}
[data-edutwin-sidebar] a[data-route]:hover{background:#ffffff0d!important;color:#fff!important}
[data-edutwin-sidebar] a[aria-current=page]{background:linear-gradient(95deg,#3277b4,#276397)!important;color:white!important;box-shadow:0 5px 16px #07152e25;border-color:#79b4e54d}
[data-edutwin-sidebar] .border-subtle-border{border-color:#ffffff1a!important}
[data-assistant-welcome]{background:radial-gradient(ellipse at 65% 12%,#e3edf9,transparent 55%)}
[data-assistant-welcome] [data-assistant-brand-frame]{padding:18px 24px 26px}
.rich-reading .math-block{border:1px solid #e1eaf4;border-radius:10px;background:#f7faff;margin:16px 0}
.status-line{top:0!important;pointer-events:none}
.reading-dialog h2{overflow-wrap:anywhere}
.rich-reading img { max-width:100%; height:auto; object-fit:contain; }
.reading-image-unavailable { display:inline-block; padding:6px 10px; border:1px solid #dce6f0; border-radius:6px; color:#61768a; font-size:13px; }