:root{font-family:system-ui,-apple-system,'Segoe UI',sans-serif;color-scheme:light;--bg:#e9f4f8;--card:#fff;--ink:#18344a;--muted:#536b7d;--line:#c8dce6;--accent:#006f84;--soft:#e8f6fa;--violet:#6b55ad;--gold:#f2ae4a}html[data-theme=dark]{color-scheme:dark;--bg:#08192b;--card:#122943;--ink:#edf6fd;--muted:#b3cbdd;--line:#385570;--accent:#28a9c0;--soft:#1b3854;--violet:#b4a6f1}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);min-height:100dvh}a{color:var(--accent)}button,input,textarea,select{font:inherit}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #edaa46;outline-offset:2px}.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:15px max(24px,calc((100vw - 1240px)/2));background:var(--card);border-bottom:1px solid var(--line)}.brand{font-weight:900;text-decoration:none;letter-spacing:.04em}.topbar nav{display:flex;gap:15px;align-items:center;flex-wrap:wrap}.topbar nav a{font-size:13px;text-decoration:none;font-weight:750}.topbar button{padding:8px 10px;border:1px solid var(--line);background:var(--soft);color:var(--ink);border-radius:10px}.layout{max-width:1250px;margin:auto;padding:20px 22px 45px}.intro{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:28px 33px;background:linear-gradient(120deg,#063e59,#274a92);border-radius:23px;color:#fff;box-shadow:0 16px 35px #00182918;margin-bottom:20px}.intro h1{font-size:clamp(28px,4vw,47px);margin:7px 0}.intro h1 em{color:#9cf1e2}.intro p{max-width:690px;line-height:1.55;margin:5px 0}.eyebrow{font-weight:850;font-size:11px;letter-spacing:.105em;color:var(--violet)}.intro .eyebrow{color:#a2e8ef}.heroicon{position:relative;flex:0 0 130px;width:130px;height:130px;border-radius:38px;background:#ffffff1b;display:grid;place-items:center;font-size:85px;font-weight:900;color:#98eaf0}.heroicon span{position:absolute;right:9px;bottom:14px;background:#f1b44c;border-radius:12px;color:#103650;font-size:16px;padding:4px}.columns{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(285px,1fr);align-items:start;gap:18px}.right{display:grid;gap:18px}.card{border:1px solid var(--line);background:var(--card);border-radius:21px;padding:23px;box-shadow:0 7px 22px #0000000d}.card h2{font-size:21px;margin:7px 0 14px}.card p{font-size:14px;line-height:1.6;color:var(--muted)}.cardtitle{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap}.cardtitle label{display:grid;gap:4px;font-size:12px;font-weight:750}.cardtitle select{min-width:190px;padding:8px;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--ink)}.mathstatement,.formula{padding:15px 18px;background:var(--soft);border:1px solid var(--line);border-radius:14px;font-size:clamp(19px,3vw,27px);text-align:center;font-weight:800;overflow-wrap:anywhere;margin:8px 0 12px}.path{display:flex;gap:5px;flex-wrap:wrap;margin-bottom:12px}.path span{padding:5px 9px;border-radius:8px;background:var(--soft);border:1px solid var(--line);font-size:12px}.path span.good{background:#daf6e9;color:#116044;border-color:#9bd6b4}.chat{height:clamp(300px,43vh,510px);overflow:auto;display:flex;flex-direction:column;gap:11px;padding:15px;border:1px solid var(--line);border-radius:16px;background:var(--soft);scroll-behavior:smooth}.bubble{max-width:93%;padding:11px 14px;box-shadow:0 3px 8px #0000000c;border-radius:15px;background:var(--card);color:var(--ink);white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px;line-height:1.65}.bubble b{display:block;font-size:11px;margin-bottom:4px;color:var(--accent)}.bubble.alumne{align-self:flex-end;background:#006c86;color:#fff}.bubble.alumne b{color:#c5f4f7}.bubble.nova{align-self:flex-start}.bubble .text{white-space:pre-wrap}.bubble.error{border-left:4px solid #e88845}.bubble.step,.bubble.complete{border-left:4px solid #51bb91}#ask{display:grid;gap:7px;margin-top:12px}#ask label{font-size:13px;font-weight:800}#question{width:100%;border-radius:12px;border:1px solid var(--line);background:var(--card);padding:13px;color:var(--ink);resize:vertical;min-height:70px;max-height:130px}.actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.actions button,.small,.quick button{border:1px solid var(--line);background:var(--soft);padding:10px 13px;border-radius:10px;color:var(--ink);font-size:13px;font-weight:740;min-height:42px}.actions .primary,.primary{background:var(--accent);color:#fff;border:1px solid var(--accent);padding:10px 15px;border-radius:10px;font-weight:800;min-height:42px}button:disabled{opacity:.55;cursor:not-allowed}.note{font-size:12px!important;margin:8px 0 0}.quick{display:flex;flex-wrap:wrap;gap:6px;margin-top:11px}.quick button{flex:1 1 135px;font-size:12px;background:transparent}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:5px;margin:13px 0}.stats div{text-align:center;border:1px solid var(--line);border-radius:12px;padding:10px 5px}.stats strong{font-size:26px;display:block;color:var(--accent)}.stats small{color:var(--muted);font-size:11px}.reco{border:1px solid var(--line);padding:11px;border-radius:11px;margin:7px 0;font-size:13px}.reco strong{display:block}.reco small{color:var(--muted)}.full{width:100%;margin-top:10px}.linkbutton{display:block;text-align:center;text-decoration:none}.quietlink{display:block;margin-top:12px;font-size:13px;font-weight:760}.rule{height:1px;background:var(--line);margin:15px 0}.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.nova-typing-status{padding:8px;color:var(--muted)}#skip{margin:6px 0}footer{text-align:center;padding:22px 16px;font-size:12px;color:var(--muted)}html.embedded .topbar,html.embedded .intro,html.embedded .right,html.embedded footer{display:none}html.embedded body{background:var(--card)}html.embedded .layout{padding:0;max-width:none}html.embedded .columns{display:block}html.embedded .card.classroom{border:0;box-shadow:none;border-radius:0;padding:10px}html.embedded .cardtitle{gap:5px}html.embedded .cardtitle h2{font-size:16px;margin:2px 0}html.embedded .mathstatement{font-size:17px;margin:5px 0;padding:8px}html.embedded .chat{height:calc(100dvh - 350px);min-height:100px;padding:8px}html.embedded .cardtitle select{min-width:140px}html.embedded .bubble{font-size:13px}html.embedded .quick button{flex:1 1 95px;min-height:32px;padding:7px}html.embedded #voiceStatus{display:none}html.embedded .actions button{font-size:12px}html.embedded #question{min-height:58px}@media(max-width:900px){.columns{grid-template-columns:1fr}.right{grid-template-columns:repeat(2,minmax(0,1fr))}.right section:first-child{grid-column:1/-1}}@media(max-width:570px){.layout{padding:11px}.topbar{padding:12px}.topbar nav{gap:6px}.topbar nav a{font-size:11px}.intro{padding:20px}.heroicon{display:none}.card{padding:15px}.right{grid-template-columns:1fr}.cardtitle select{min-width:150px}.chat{height:42vh;min-height:255px}.actions button{flex:1}.quick button{font-size:11px}}@media(prefers-reduced-motion:reduce){.chat{scroll-behavior:auto}html{scroll-behavior:auto}}@media print{.topbar,.intro,.actions,.quick,.right{display:none}.columns{display:block}.chat{height:auto;overflow:visible}}