.tutor-open{border:1.5px solid var(--v2-line);background:var(--v2-card);min-height:40px;color:var(--v2-ink);font:inherit;cursor:pointer;border-radius:999px;flex:none;align-items:center;gap:6px;padding:0 14px;font-size:.92rem;font-weight:700;display:inline-flex}.tutor-open:hover{background:var(--v2-accent-soft);border-color:var(--v2-accent)}.tutor-open[aria-expanded=true]{background:var(--v2-accent);border-color:var(--v2-accent);color:#fff}.tutor-offer{background:var(--v2-accent-soft);color:var(--v2-ink);font:inherit;cursor:pointer;border:0;border-radius:16px 16px 16px 4px;margin:0;padding:9px 14px;font-weight:700;animation:.3s ease-out tutor-pop}.tutor-offer:hover{outline:2px solid var(--v2-accent)}.tutor-panel{z-index:130;background:var(--surface);width:min(400px,100vw - 32px);max-height:min(560px,100dvh - 140px);color:var(--v2-ink);border:1px solid var(--v2-line);border-radius:var(--v2-radius);box-shadow:var(--shadow-lg);flex-direction:column;animation:.22s ease-out tutor-up;display:flex;position:fixed;bottom:96px;right:20px;overflow:hidden}.tutor-head{border-bottom:1px solid var(--v2-line);align-items:center;gap:10px;padding:10px 10px 10px 14px;display:flex}.tutor-title{flex-direction:column;flex:1;line-height:1.2;display:flex}.tutor-title span{color:var(--muted);font-size:.8rem}.tutor-list{overscroll-behavior:contain;flex-direction:column;flex:1;gap:8px;min-height:120px;padding:14px;display:flex;overflow-y:auto}.tutor-msg{white-space:pre-wrap;overflow-wrap:anywhere;max-width:88%;margin:0;padding:9px 13px;font-size:.97rem;line-height:1.45}.tutor-msg.bot{background:var(--v2-card);border-radius:16px 16px 16px 4px;align-self:flex-start}.tutor-msg.me{background:var(--v2-accent);color:#fff;border-radius:16px 16px 4px;align-self:flex-end}.tutor-msg.note{background:var(--v2-bad-soft);color:var(--v2-bad-ink)}.tutor-msg code{background:var(--v2-card-2);border-radius:6px;padding:1px 5px;font-family:ui-monospace,SF Mono,Menlo,Consolas,monospace;font-size:.9em}.tutor-msg.me code{background:#fff3}.tutor-dots{gap:4px;padding:4px 0;display:inline-flex}.tutor-dots i{background:var(--muted);border-radius:50%;width:7px;height:7px;animation:1s ease-in-out infinite tutor-blink}.tutor-dots i:nth-child(2){animation-delay:.15s}.tutor-dots i:nth-child(3){animation-delay:.3s}.tutor-chips{scrollbar-width:none;gap:8px;padding:0 14px 10px;display:flex;overflow-x:auto}.tutor-chip{border:1.5px solid var(--v2-line);background:var(--surface);color:var(--v2-ink);font:inherit;cursor:pointer;white-space:nowrap;border-radius:999px;flex:none;padding:7px 12px;font-size:.88rem;font-weight:600}.tutor-chip:hover:not(:disabled){border-color:var(--v2-accent);background:var(--v2-accent-soft)}.tutor-chip:disabled{opacity:.5;cursor:default}.tutor-form{padding:10px 12px calc(10px + env(safe-area-inset-bottom));border-top:1px solid var(--v2-line);gap:8px;display:flex}.tutor-form input{border:1.5px solid var(--v2-line);background:var(--v2-card);min-width:0;min-height:44px;color:var(--v2-ink);font:inherit;border-radius:999px;flex:1;padding:0 14px;font-size:16px}.tutor-form input:focus{border-color:var(--v2-accent);outline:none}.tutor-mic,.tutor-send{cursor:pointer;border:0;border-radius:50%;flex:none;place-items:center;width:44px;height:44px;font-size:1.05rem;display:grid}.tutor-mic{background:var(--v2-card-2);color:var(--v2-ink)}.tutor-mic.on{background:var(--v2-bad);color:#fff;animation:1.2s infinite tutor-pulse}.tutor-send{background:var(--v2-accent);color:#fff}.tutor-send:disabled{background:var(--v2-line);color:var(--muted);cursor:default}@media (max-width:640px){.tutor-panel{border-radius:var(--v2-radius) var(--v2-radius) 0 0;border-bottom:0;width:100%;max-height:72dvh;bottom:0;left:0;right:0}.tutor-open{min-height:36px;padding:0 12px}}@keyframes tutor-up{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}@keyframes tutor-pop{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:none}}@keyframes tutor-blink{0%,80%,to{opacity:.25}40%{opacity:1}}@keyframes tutor-pulse{50%{box-shadow:0 0 0 6px #f9731640}}@media (prefers-reduced-motion:reduce){.tutor-panel,.tutor-offer,.tutor-dots i,.tutor-mic.on{animation:none}}.robi-fab{z-index:80;border:1.5px solid var(--v2-line);background:var(--surface);width:60px;height:60px;box-shadow:var(--shadow-lg);cursor:pointer;border-radius:50%;place-items:center;padding:0;transition:transform .15s;display:grid;position:fixed;bottom:20px;right:20px}.robi-fab:hover{border-color:var(--v2-accent);transform:translateY(-2px)}.robi-fab[aria-expanded=true]{border-color:var(--v2-accent);background:var(--v2-accent-soft)}.robi-fab:focus-visible{outline:3px solid var(--v2-accent);outline-offset:2px}@media (max-width:899px){.robi-fab{right:16px;bottom:calc(var(--tabbar-h) + 12px + env(safe-area-inset-bottom));width:52px;height:52px}}@media (prefers-reduced-motion:reduce){.robi-fab{transition:none}}