.at-card{background:#fff;border-radius:24px;width:100%;max-width:560px;margin:0 auto;overflow:hidden;box-shadow:0 58px 24px #5d008f03,0 33px 20px #5d008f0d,0 14px 14px #5d008f17,0 4px 8px #5d008f1a,0 1px 1px #0000000d}.at-header{border-bottom:1px solid #f0e8f7;align-items:center;gap:12px;padding:18px 22px;display:flex}.at-avatar{background:linear-gradient(135deg,#5d008f 0%,#9333ea 100%);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;display:flex;box-shadow:0 4px 12px #5d008f40}.at-avatar svg{color:#fff;width:18px;height:18px}.at-avatar-img{object-fit:cover;border-radius:50%;display:block;width:36px!important;height:36px!important}.at-header-info{flex-direction:column;gap:2px;display:flex}.at-tutor-name{color:#1f1b2e;letter-spacing:-.01em;font-size:15px;font-weight:700}.at-tutor-status{color:#1fa85f;align-items:center;gap:6px;font-size:11px;font-weight:600;display:flex}.at-status-dot{background:#1fa85f;border-radius:50%;flex-shrink:0;width:7px;height:7px;animation:2s ease-in-out infinite atPulseDot;box-shadow:0 0 0 3px #1fa85f2e}@keyframes atPulseDot{0%,to{box-shadow:0 0 0 3px #1fa85f2e}50%{box-shadow:0 0 0 5px #1fa85f14}}@media (prefers-reduced-motion:reduce){.at-status-dot{animation:none}}.at-chat-body{flex-direction:column;justify-content:flex-end;gap:14px;height:260px;padding:22px;display:flex;overflow:hidden}.at-msg{max-width:85%;animation:.3s forwards atFadeIn;display:flex}@keyframes atFadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@media (prefers-reduced-motion:reduce){.at-msg{animation:none}}.at-msg-user{justify-content:flex-end;align-self:flex-end}.at-msg-ai{align-self:flex-start}.at-bubble{border-radius:18px;padding:12px 16px;font-size:14px;font-weight:500;line-height:1.5}.at-bubble-user{color:#fff;background:#5d008f;border-bottom-right-radius:6px}.at-bubble-ai{color:#1f1b2e;background:#f5eefa;border-bottom-left-radius:6px;max-height:140px;overflow:hidden}.at-lang-zh{font-family:Noto Sans SC,Plus Jakarta Sans,sans-serif}.at-rtl-text{text-align:right;direction:rtl}.at-cursor{vertical-align:text-bottom;background:#fff;width:2px;height:1em;margin-left:1px;animation:.8s steps(2,end) infinite atBlinkCursor;display:inline-block}@keyframes atBlinkCursor{0%,50%{opacity:1}51%,to{opacity:0}}@media (prefers-reduced-motion:reduce){.at-cursor{opacity:1;animation:none}}.at-dots{gap:4px;padding:4px 2px;display:inline-flex}.at-dots span{background:#b29ec4;border-radius:50%;width:7px;height:7px;animation:1.2s ease-in-out infinite atBounceDot}.at-dots span:nth-child(2){animation-delay:.15s}.at-dots span:nth-child(3){animation-delay:.3s}@keyframes atBounceDot{0%,60%,to{opacity:.5;transform:translateY(0)}30%{opacity:1;transform:translateY(-4px)}}@media (prefers-reduced-motion:reduce){.at-dots span{opacity:1;animation:none}}.at-input-bar{background:#faf7fd;border-top:1px solid #f0e8f7;align-items:center;gap:10px;padding:14px 18px;display:flex}.at-input-field{color:#9b94a8;background:#fff;border:1px solid #ede4fe;border-radius:99px;flex:1;padding:9px 16px;font-family:inherit;font-size:12px;font-weight:500}.at-send-btn{background:#5d008f;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;display:flex}.at-send-btn svg{color:#fff;width:14px;height:14px}.at-sr-live{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@media (max-width:600px){.at-chat-body{height:220px;padding:18px}.at-bubble{padding:10px 14px;font-size:13px}.at-bubble-ai{max-height:120px}}