.learning-tutor,.learning-tutor-launch{--tutor-ink:#143042;--tutor-muted:#49667a;--tutor-blue:#005cc8;--tutor-surface:#fff;--tutor-soft:#eef6fd;--tutor-line:#cddce6;color:var(--tutor-ink)}.learning-tutor{background:var(--tutor-surface);text-align:left;border-radius:24px;margin-top:28px;overflow:clip;box-shadow:0 12px 36px #14304212}.learning-tutor-header{background:var(--tutor-soft);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:20px;padding:24px 26px;display:flex}.tutor-identity{align-items:center;gap:18px;min-width:0;display:flex}.tutor-identity h3{letter-spacing:-.025em;margin:0;font-size:clamp(23px,2.4vw,30px);font-weight:750;line-height:1.2}.tutor-identity h3 em{font-family:var(--relay-serif,Georgia,serif);color:var(--tutor-blue);font-weight:400}.tutor-identity p{color:var(--tutor-muted);margin:7px 0 0;font-size:15px}.tutor-header-controls{align-items:end;gap:8px;display:flex}.tutor-settings label{color:var(--tutor-muted);gap:4px;font-size:13px;display:grid}.tutor-settings select{background:var(--tutor-surface);min-height:44px;color:var(--tutor-ink);border:1px solid var(--tutor-line);border-radius:12px;max-width:180px;padding:9px 30px 9px 12px;font-family:inherit;font-size:15px;font-weight:600;line-height:1.3}.tutor-icon-button{width:44px;height:44px;color:var(--tutor-muted);cursor:pointer;background:0 0;border:0;border-radius:50%;place-items:center;display:grid}.learning-tutor button:focus-visible{outline:3px solid var(--tutor-blue);outline-offset:3px}.learning-tutor select:focus-visible{outline:3px solid var(--tutor-blue);outline-offset:3px}.learning-tutor textarea:focus-visible{outline:3px solid var(--tutor-blue);outline-offset:3px}.learning-tutor-launch:focus-visible{outline:3px solid var(--tutor-blue);outline-offset:3px}.learning-tutor button{font:inherit}.learning-tutor button:disabled{cursor:default;opacity:.5}.motion-paused .tutor-thinking span{animation:none}.tutor-transcript{overscroll-behavior:auto;padding:22px 26px 8px;overflow:visible}.tutor-welcome{color:var(--tutor-muted);max-width:65ch;margin:0 0 16px}.tutor-message{max-width:75ch;margin-bottom:20px}.tutor-message p{white-space:pre-wrap;overflow-wrap:anywhere;margin:7px 0 0;font-size:17px;line-height:1.65}.tutor-message-label{color:var(--tutor-muted);letter-spacing:.03em;font-size:12px;font-weight:750}.tutor-message.user{background:var(--tutor-soft);border-radius:16px 16px 3px;max-width:min(85%,65ch);margin-left:auto;padding:12px 16px}.tutor-message.assistant{padding:0 2px}.tutor-message.assistant .tutor-message-label{color:var(--tutor-blue)}.tutor-thinking{color:var(--tutor-muted);flex-wrap:wrap;align-items:center;gap:5px;padding:12px 0 20px;font-size:14px;display:flex}.tutor-thinking span{background:#087f92;border-radius:50%;width:5px;height:5px;animation:1s ease-in-out infinite tutor-dot}.tutor-thinking span:nth-child(2){animation-delay:.15s}.tutor-thinking span:nth-child(3){margin-right:7px;animation-delay:.3s}.tutor-suggestions{flex-wrap:wrap;gap:8px;padding:4px 26px 16px;display:flex}.tutor-suggestions button{border:1px solid var(--tutor-line);color:var(--tutor-ink);cursor:pointer;background:0 0;border-radius:22px;align-items:center;gap:7px;min-height:44px;padding:8px 13px;font-size:14px;display:flex}.tutor-composer{border:1px solid var(--tutor-line);background:var(--tutor-surface);border-radius:18px;align-items:end;gap:12px;margin:0 26px 14px;padding:12px 12px 12px 16px;display:flex}.tutor-composer textarea{resize:vertical;width:100%;min-width:0;min-height:48px;max-height:150px;color:var(--tutor-ink);caret-color:#087f92;background:0 0;border:0;padding:0;font-family:inherit;font-size:16px;line-height:1.5}.tutor-composer textarea::placeholder{color:var(--tutor-muted)}.tutor-composer button{color:#fff;cursor:pointer;background:#005cc8;border:0;border-radius:50%;flex:0 0 44px;place-items:center;width:44px;height:44px;display:grid;box-shadow:0 4px 9px #005cc82b}.tutor-footer{color:var(--tutor-muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:0 26px 20px;font-size:12px;display:flex}.tutor-footer button{color:var(--tutor-muted);cursor:pointer;background:0 0;border:0;align-items:center;gap:6px;min-height:44px;font-size:12px;display:flex}.tutor-error,.tutor-connection{color:#833c00;background:#fff0e0;border-radius:12px;margin:16px 26px;padding:12px 16px;font-size:15px}.tutor-error p{margin:0 0 8px}.tutor-error button{color:inherit;background:0 0;border:1px solid;border-radius:18px;min-height:40px;padding:6px 12px}.learning-tutor-launch{background:var(--tutor-surface);border:1px solid var(--tutor-line);cursor:pointer;border-radius:24px;align-items:center;gap:10px;min-height:48px;margin-top:24px;padding:11px 18px;font-family:inherit;font-size:16px;font-weight:600;line-height:1.4;display:flex}.learning-tutor-launch span{color:var(--tutor-muted);font-size:12px}@keyframes tutor-dot{0%,to{opacity:.35;transform:translateY(0)}50%{opacity:1;transform:translateY(-3px)}}.dark .learning-tutor,.dark .learning-tutor-launch{--tutor-ink:#f3f9fc;--tutor-muted:#b7ccd8;--tutor-blue:#77c4ff;--tutor-surface:#0d3047;--tutor-soft:#123a52;--tutor-line:#50768c}.dark .tutor-error,.dark .tutor-connection{color:#ffe2bb;background:#4a331e}@media (hover:hover){.tutor-icon-button:hover,.tutor-suggestions button:hover,.tutor-footer button:hover{background:var(--tutor-soft)}.tutor-composer button:hover{background:#004ba4}}@media (max-width:600px){.learning-tutor{border-radius:18px;margin-top:22px}.learning-tutor-header{gap:14px;padding:20px 16px}.tutor-identity{gap:12px}.tutor-identity h3{font-size:24px}.tutor-header-controls{justify-content:flex-end;width:100%}.tutor-settings label{margin-right:auto}.tutor-transcript{padding:18px 16px 8px}.tutor-suggestions{padding:4px 16px 14px}.tutor-composer{margin:0 16px 12px}.tutor-footer{padding:0 16px 16px}.tutor-message.user{max-width:94%}.tutor-error,.tutor-connection{margin:12px 16px}.tutor-footer span{max-width:55ch}}@media (prefers-reduced-motion:reduce){.tutor-character-window,.tutor-thinking span{animation:none!important}.tutor-character-pose{transition:none!important}}.tutor-character{flex:0 0 100px;justify-content:center;align-items:center;width:100px;height:116px;display:flex}.tutor-character-window{transform-origin:50% 85%;background:#faf8f1;border-radius:16px;max-width:none;height:100%;display:block;position:relative;overflow:hidden}.tutor-character--robot .tutor-character-window{background:0 0;border-radius:0}.tutor-character-pose{opacity:1;transition:opacity .16s ease-out;display:block;position:absolute;inset:0}.tutor-character-pose.working{opacity:0}.tutor-character-pose img{object-fit:fill;pointer-events:none;-webkit-user-select:none;user-select:none;position:absolute;max-width:none!important}.tutor-character.is-working .waiting{opacity:0}.tutor-character.is-working .working{opacity:1}.is-thinking .tutor-identity .tutor-character-window{animation:1.8s ease-in-out infinite tutor-reading}.motion-paused .tutor-character-window{animation:none!important}.tutor-companion-picker{border-bottom:1px solid var(--tutor-line);margin:0 26px;padding:12px 0}.tutor-companion-picker summary{cursor:pointer;min-height:44px;color:var(--tutor-muted);border-radius:8px;justify-content:space-between;align-items:center;gap:16px;font-size:15px;list-style:none;display:flex}.tutor-companion-picker summary::-webkit-details-marker{display:none}.tutor-companion-picker summary strong{color:var(--tutor-ink);font-weight:650}.tutor-companion-picker[open] summary>svg{transform:rotate(180deg)}.tutor-companion-picker summary:focus-visible{outline:3px solid var(--tutor-blue);outline-offset:3px}.tutor-companion-options{grid-template-columns:repeat(6,minmax(0,1fr));gap:10px;padding:10px 0 6px;display:grid}.tutor-companion-options button{border:1px solid var(--tutor-line);background:var(--tutor-surface);min-width:0;color:var(--tutor-ink);cursor:pointer;text-align:center;border-radius:14px;flex-direction:column;align-items:center;gap:8px;padding:12px 6px;font-size:14px;font-weight:650;line-height:1.3;display:flex}.tutor-companion-options button[aria-pressed=true]{border:2px solid var(--tutor-blue);background:var(--tutor-soft);padding:11px 5px}.tutor-companion-options .tutor-character{flex-basis:88px;width:76px;height:88px}.tutor-companion-options button span:last-child{overflow-wrap:anywhere}@keyframes tutor-reading{0%,to{transform:rotate(-1deg)}50%{transform:rotate(1deg)}}@media (hover:hover){.tutor-companion-options button:hover{border-color:var(--tutor-blue)}}@media (max-width:600px){.tutor-identity>.tutor-character{flex-basis:84px;width:84px;height:100px}.tutor-identity>div{min-width:0}.tutor-companion-picker{margin:0 16px}.tutor-companion-options{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.tutor-companion-options .tutor-character{flex-basis:80px;width:64px;height:80px}}.tutor-settings{background:var(--tutor-soft);padding:12px 26px 16px}.tutor-settings[hidden]{display:none}.tutor-settings label{justify-content:flex-end;align-items:center;gap:12px;min-width:0;display:flex}.tutor-settings select{min-width:150px;max-width:200px}.tutor-message.assistant p{margin-top:0}@media (max-width:600px){.tutor-settings{padding:0 16px 16px}.tutor-settings label{justify-content:space-between}.tutor-header-controls{gap:4px}}.learning-tutor-launch{min-height:58px;padding:7px 18px 7px 7px}.learning-tutor-launch .tutor-character.is-portrait{background:#faf8f1;border-radius:50%;flex:0 0 44px;width:44px;height:44px;overflow:hidden}.learning-tutor-launch .tutor-character--robot.is-portrait{background:0 0}.learning-tutor-launch .is-portrait .tutor-character-window{border-radius:0;flex-shrink:0}.tutor-suggestions{gap:10px}.tutor-suggestions button{--study-action-top:#f7fbff;--study-action-bottom:#e6f0ff;--study-action-line:#a8c6ed;--study-action-edge:#c9dcf5;--study-action-icon:#005cc8;border:1px solid var(--study-action-line);background:linear-gradient(180deg,var(--study-action-top),var(--study-action-bottom));min-height:50px;color:var(--tutor-ink);box-shadow:inset 0 1px 0 #ffffffc9,inset 0 -3px 0 var(--study-action-edge),0 5px 12px #14304212;border-radius:14px;padding:11px 16px 14px;font-weight:650;line-height:1.4;transition:transform .14s ease-out,box-shadow .14s ease-out}.tutor-suggestions button[data-action=example]{--study-action-top:#f3ffff;--study-action-bottom:#ddf5f5;--study-action-line:#9acbd0;--study-action-edge:#bce4e6;--study-action-icon:#006b75}.tutor-suggestions button[data-action=compare]{--study-action-top:#fffaf3;--study-action-bottom:#ffecd5;--study-action-line:#e6bc8e;--study-action-edge:#f1d2ab;--study-action-icon:#974400}.tutor-suggestions button svg{color:var(--study-action-icon);flex:0 0 20px}.tutor-suggestions button:active:not(:disabled){box-shadow:inset 0 1px 0 #ffffff8f,inset 0 -1px 0 var(--study-action-edge),0 2px 6px #1430421a;transform:translateY(2px)}@media (hover:hover){.tutor-suggestions button:hover:not(:disabled){background:linear-gradient(180deg,var(--study-action-top),var(--study-action-bottom));box-shadow:inset 0 1px 0 #ffffffc9,inset 0 -3px 0 var(--study-action-edge),0 7px 15px #1430421f;transform:translateY(-1px)}}.dark .tutor-suggestions button{--study-action-top:#183d58;--study-action-bottom:#12324c;--study-action-line:#537da4;--study-action-edge:#0b273e;--study-action-icon:#96ccff;box-shadow:inset 0 1px 0 #ffffff1a,inset 0 -3px 0 var(--study-action-edge),0 5px 12px #0002}.dark .tutor-suggestions button[data-action=example]{--study-action-top:#153e46;--study-action-bottom:#10313a;--study-action-line:#4b8189;--study-action-edge:#09282e;--study-action-icon:#8ee3e7}.dark .tutor-suggestions button[data-action=compare]{--study-action-top:#483623;--study-action-bottom:#372b20;--study-action-line:#967046;--study-action-edge:#2c2118;--study-action-icon:#ffd29e}@media (max-width:600px){.tutor-suggestions{grid-template-columns:minmax(0,1fr);display:grid}.tutor-suggestions button{justify-content:flex-start;gap:10px;width:100%}}@media (prefers-reduced-motion:reduce){.tutor-suggestions button{transition:none}.tutor-suggestions button:hover:not(:disabled),.tutor-suggestions button:active:not(:disabled){transform:none}}.tutor-sticky-toolbar{top:var(--tutor-sticky-top,0px);z-index:12;background:var(--tutor-soft);position:sticky;box-shadow:0 5px 12px #1430420d}.learning-tutor-header{flex-wrap:nowrap;gap:12px;padding:12px 18px}.tutor-identity{flex:1;gap:12px}.tutor-identity>.tutor-character{flex:0 0 64px;width:64px;height:74px}.tutor-identity h3{font-size:24px}.tutor-identity p{margin-top:4px;font-size:14px}.tutor-compact-name{display:none}.tutor-header-controls{flex:none;gap:4px;width:auto}.tutor-composer textarea,.tutor-suggestions button{scroll-margin-top:calc(var(--tutor-sticky-top,0px) + 110px)}@media (max-width:600px){.learning-tutor-header{gap:8px;padding:8px 12px}.tutor-identity{gap:8px}.tutor-identity>.tutor-character{flex-basis:48px;width:48px;height:56px}.tutor-identity h3{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.tutor-identity p{display:none}.tutor-compact-name{overflow-wrap:anywhere;font-size:16px;line-height:1.3;display:block}.tutor-header-controls{gap:0}}@media (max-width:360px){.tutor-compact-name{display:none}}