:root{--brand:#1D1147;--brand-2:#2B1D63;--brand-ink:#EDEAF7;--brand-muted:#A9A1CC;--ground:#F5F4F9;--surface:#FFFFFF;--surface-2:#F9F8FC;--line:#E3E0EE;--line-strong:#CFCAE2;--text:#1A1630;--muted:#686283;--primary:#4A36B5;--primary-soft:#ECE9FA;--on-primary:#FFFFFF;--brass:#A87B2E;--brass-soft:#F6EEDD;--good:#1D7F55;--good-soft:#E2F3EA;--warn:#B06D07;--warn-soft:#FBEFD9;--bad:#B8363A;--bad-soft:#FBE5E5;--shadow:0 1px 2px rgba(29,17,71,.06),0 8px 24px -12px rgba(29,17,71,.18);--r:10px;--f-display:"Newsreader",Georgia,"Times New Roman",serif;--f-ui:"Figtree",system-ui,-apple-system,"Segoe UI",sans-serif;--f-mono:"JetBrains 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rgba(0,0,0,.6)}}:root[data-theme=dark]{--brand:#140C33;--brand-2:#221852;--brand-ink:#ECE9F8;--brand-muted:#9D95C4;--ground:#0E0B1C;--surface:#161229;--surface-2:#1B1632;--line:#2A2446;--line-strong:#3A3360;--text:#ECEAF5;--muted:#9C96B8;--primary:#9383F2;--primary-soft:#262052;--on-primary:#140C33;--brass:#D8B066;--brass-soft:#2E2616;--good:#4FC08D;--good-soft:#15291F;--warn:#E3A43E;--warn-soft:#2E2412;--bad:#EF7A7D;--bad-soft:#2F1719;--shadow:0 1px 2px rgba(0,0,0,.3),0 10px 30px -14px rgba(0,0,0,.6)}*{box-sizing:border-box}body{background:var(--ground);color:var(--text);font-family:var(--f-ui);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}button,input,select,textarea{font:inherit;color:inherit}a{color:var(--primary)}:focus-visible{outline:2px solid 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.15s}.sw[aria-checked=true]{background:var(--primary)}.sw[aria-checked=true]:after{transform:translate(16px)}.tokens{display:flex;flex-wrap:wrap;gap:6px;border:1px solid var(--line-strong);border-radius:8px;padding:7px;background:var(--surface)}.tok{display:inline-flex;align-items:center;gap:6px;background:var(--primary-soft);color:var(--primary);border-radius:6px;padding:3px 8px;font-size:12.5px;font-weight:600}.tok small{font-weight:500;opacity:.75}.timeline{display:flex;gap:0;align-items:flex-start}.tl-step{flex:1;display:flex;flex-direction:column;align-items:flex-start;gap:6px;position:relative;font-size:12px;color:var(--muted);min-width:0}.tl-step .n{width:22px;height:22px;border-radius:50%;display:grid;place-items:center;font-size:11px;font-weight:700;background:var(--line);color:var(--muted);position:relative;z-index:1}.tl-step.done .n{background:var(--good);color:#fff}.tl-step.now .n{background:var(--primary);color:var(--on-primary)}.tl-step:not(:last-child):after{content:"";position:absolute;top:11px;left:22px;right:0;height:2px;background:var(--line)}.tl-step.done:not(:last-child):after{background:var(--good)}.q-card{border:1px solid var(--line);border-radius:12px;background:var(--surface);overflow:hidden}.q-head{display:flex;justify-content:space-between;gap:10px;padding:14px 18px;border-bottom:1px solid var(--line);background:var(--surface-2);flex-wrap:wrap}.q-body{padding:18px;display:flex;flex-direction:column;gap:14px}.q-text{font-family:var(--f-display);font-size:19px;line-height:1.4;font-weight:500}.opt{display:flex;gap:12px;align-items:flex-start;border:1px solid var(--line);border-radius:9px;padding:10px 12px}.opt .k{width:24px;height:24px;flex:none;border-radius:6px;display:grid;place-items:center;font-weight:700;font-size:12px;background:var(--surface-2);border:1px solid var(--line)}.opt.correct{border-color:var(--good);background:var(--good-soft)}.opt.correct .k{background:var(--good);color:#fff;border-color:var(--good)}.opt .why{font-size:12px;color:var(--muted);margin-top:2px}.src{border-left:3px solid var(--brass);background:var(--brass-soft);border-radius:0 9px 9px 0;padding:12px 14px;font-size:13px;line-height:1.6}.src mark{background:color-mix(in oklab,var(--brass) 28%,transparent);color:inherit;padding:0 2px;border-radius:3px}.checks{display:grid;gap:8px}.check{display:flex;gap:9px;align-items:flex-start;font-size:13px}.check svg{flex:none;margin-top:2px}.qlist button{display:grid;grid-template-columns:28px minmax(0,1fr) auto;gap:10px;align-items:center;width:100%;text-align:left;border:0;background:none;padding:10px 8px;border-radius:8px;cursor:pointer;border-bottom:1px solid var(--line)}.qlist button[aria-current=true]{background:var(--primary-soft)}.qlist .qn{font-family:var(--f-mono);font-size:11px;color:var(--muted)}.qlist 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minmax(0,1fr);gap:8px}.transcript p.cur{background:var(--primary-soft)}.transcript .t{font-family:var(--f-mono);font-size:11.5px;color:var(--muted);padding-top:2px}.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:12px}.tabs button{border:0;background:none;padding:8px 12px;font-weight:600;color:var(--muted);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px}.tabs button[aria-selected=true]{color:var(--text);border-bottom-color:var(--primary)}.chat{display:flex;flex-direction:column;gap:12px;font-size:13px}.chat .search{flex:none;max-width:none}.bubble{padding:10px 12px;border-radius:10px;line-height:1.55}.bubble.me{background:var(--primary-soft);align-self:flex-end;max-width:90%}.bubble.ai{background:var(--surface-2);border:1px solid var(--line)}.cite{font-family:var(--f-mono);font-size:10.5px;background:var(--brass-soft);color:var(--brass);border-radius:4px;padding:1px 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var(--line);border-radius:12px;background:var(--surface);padding:18px;display:flex;flex-direction:column;gap:10px}.seal{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:var(--brass-soft);color:var(--brass);border:1.5px solid color-mix(in oklab,var(--brass) 45%,transparent)}.cert-preview{background:#fdfbf6;color:#1d1147;border-radius:12px;padding:34px 38px;border:1px solid #E7DCC4;box-shadow:var(--shadow);position:relative;display:flex;flex-direction:column;gap:12px}.cert-preview:before{content:"";position:absolute;inset:10px;border:1px solid #D9C7A0;border-radius:8px;pointer-events:none}.cert-preview .t1{font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:#8a6a2c;font-weight:600}.cert-preview .t2{font-family:var(--f-display);font-size:34px;line-height:1.1;font-weight:500}.cert-preview .t3{font-family:var(--f-display);font-size:22px;font-style:italic}.cert-preview 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.t{background:var(--brand);color:#fff;padding:10px 16px;border-radius:10px;font-weight:600;font-size:13px;box-shadow:0 10px 30px #00000040}.toasts .t.bad{background:var(--bad)}.dropdown{position:absolute;right:0;top:44px;width:min(380px,92vw);background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);z-index:30;padding:10px 14px;max-height:70vh;overflow:auto}.rel{position:relative}.signin{min-height:100vh;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);background:var(--ground)}.signin .brandside{background:var(--brand);color:var(--brand-ink);padding:48px;display:flex;flex-direction:column;justify-content:space-between;gap:24px;background-image:radial-gradient(90% 70% at 85% 15%,rgba(147,131,242,.3),transparent 60%)}.signin .brandside h1{font-size:44px;color:#fff;max-width:14ch}.signin .formside{display:grid;place-items:center;padding:32px 20px}.signin 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.docx-wrapper{background:transparent!important;padding:0!important}.docx-host section.docx{box-shadow:none!important;margin:0 auto 16px!important}.html-content{max-width:75ch;line-height:1.7;font-size:15px}.html-content img{max-width:100%}.video-el{width:100%;max-height:70vh;background:#000;display:block}.lesson.clickable{cursor:pointer}.lesson.clickable:hover{background:var(--surface-2)}.qeditor .opt-row{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:8px;align-items:center}.list-actions{display:flex;gap:6px;justify-content:flex-end;flex-wrap:wrap}.pill-select{display:flex;flex-wrap:wrap;gap:6px}.pill-select button{border:1px solid var(--line-strong);background:var(--surface);border-radius:999px;padding:4px 10px;font-size:12.5px;cursor:pointer;color:var(--text)}.pill-select button[aria-pressed=true]{background:var(--primary-soft);color:var(--primary);border-color:transparent;font-weight:600}.tok button{border:0;background:none;color:inherit;cursor:pointer;padding:0 0 0 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dd{margin:0}.hint{font-size:12px;color:var(--muted)}.two{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}@media(max-width:900px){.signin{grid-template-columns:minmax(0,1fr)}.signin .brandside{padding:28px 20px}.signin .brandside h1{font-size:32px}.two{grid-template-columns:minmax(0,1fr)}}