.vd-root{--vd-primary: #5e5adb;--vd-primary-hover: #4c48c1;--vd-bg: #f5f6fa;--vd-surface: #ffffff;--vd-text: #111827;--vd-muted: #6b7280;--vd-border: #e5e7eb;--vd-radius: 16px;font-family:Inter,system-ui,-apple-system,sans-serif;color:var(--vd-text)}.vd-panel{display:flex;flex-direction:column;height:520px;max-width:100%;background:var(--vd-surface);border:1px solid var(--vd-border);border-radius:var(--vd-radius);box-shadow:0 12px 40px #11182714;overflow:hidden}.vd-panel--loading .vd-input{opacity:1}.vd-panel--loading .vd-send:disabled{opacity:.55;cursor:default}.vd-header{padding:16px 18px;border-bottom:1px solid var(--vd-border);background:linear-gradient(135deg,#f0effd,#fff)}.vd-header-title{font-size:16px;font-weight:700}.vd-header-sub{font-size:12px;color:var(--vd-muted);margin-top:2px}.vd-messages{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:10px;background:var(--vd-bg);scroll-behavior:smooth}.vd-msg{max-width:88%;padding:10px 14px;border-radius:14px;font-size:14px;line-height:1.45;white-space:pre-wrap;will-change:transform,opacity}.vd-msg--bot{align-self:flex-start;background:#fff;border:1px solid var(--vd-border);border-bottom-left-radius:4px}.vd-msg--user{align-self:flex-end;background:var(--vd-primary);color:#fff;border-bottom-right-radius:4px;box-shadow:0 4px 14px #5e5adb47}@keyframes vd-msg-enter-user{0%{opacity:0;transform:translateY(10px) scale(.94)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes vd-msg-enter-bot{0%{opacity:0;transform:translateY(10px) scale(.96)}to{opacity:1;transform:translateY(0) scale(1)}}.vd-msg--enter-user{transform-origin:bottom right;animation:vd-msg-enter-user .38s cubic-bezier(.22,1,.36,1) both}.vd-msg--enter-bot{transform-origin:bottom left;animation:vd-msg-enter-bot .42s cubic-bezier(.22,1,.36,1) both}.vd-msg--typing{align-self:flex-start;padding:12px 16px;min-width:56px;animation:vd-msg-enter-bot .32s cubic-bezier(.22,1,.36,1) both}.vd-typing-dots{display:inline-flex;align-items:center;gap:5px;height:10px}.vd-typing-dots span{width:7px;height:7px;border-radius:50%;background:var(--vd-muted);animation:vd-typing-bounce 1.2s ease-in-out infinite}.vd-typing-dots span:nth-child(2){animation-delay:.15s}.vd-typing-dots span:nth-child(3){animation-delay:.3s}@keyframes vd-typing-bounce{0%,60%,to{transform:translateY(0);opacity:.45}30%{transform:translateY(-5px);opacity:1}}.vd-msg--follow-up{border-color:#ef444452;background:linear-gradient(135deg,#fff,#fff7f7)}.vd-msg--follow-up-animate{animation:vd-msg-enter-bot .42s cubic-bezier(.22,1,.36,1) both,vd-follow-up-glow 2.4s ease-in-out .4s 2}@keyframes vd-follow-up-glow{0%,to{box-shadow:0 0 #ef444400;border-color:#ef444438}50%{box-shadow:0 0 0 4px #ef444424;border-color:#ef44447a}}.vd-panel--follow-up{animation:vd-panel-follow-up 1.9s ease-out}@keyframes vd-panel-follow-up{0%,to{box-shadow:0 12px 40px #11182714}18%{box-shadow:0 0 0 2px #ef444438,0 12px 36px #ef44441a}}.vd-actions{padding:0 12px 8px;display:flex;flex-direction:column;gap:8px}.vd-scenarios{display:flex;flex-wrap:wrap;gap:8px}.vd-chip{border:1px solid var(--vd-border);background:#fff;color:var(--vd-text);border-radius:999px;padding:8px 12px;font-size:13px;cursor:pointer}.vd-chip:hover{border-color:var(--vd-primary);color:var(--vd-primary)}.vd-cta-row{display:flex;gap:8px}.vd-cta{flex:1;border:none;background:var(--vd-primary);color:#fff;border-radius:12px;padding:10px 14px;font-weight:600;cursor:pointer}.vd-cta:hover{background:var(--vd-primary-hover)}.vd-form{display:grid;grid-template-columns:1fr auto;gap:8px;padding:12px;border-top:1px solid var(--vd-border);background:#fff}.vd-input{border:1px solid var(--vd-border);border-radius:12px;padding:10px 12px;font-size:14px}.vd-input:focus{outline:2px solid rgba(94,90,219,.25);border-color:var(--vd-primary)}.vd-send{border:none;background:var(--vd-primary);color:#fff;border-radius:12px;width:44px;font-size:18px;cursor:pointer;transition:transform .18s ease,background .18s ease,box-shadow .18s ease}.vd-send:hover:not(:disabled){background:var(--vd-primary-hover)}.vd-send:active:not(:disabled){transform:scale(.92)}.vd-send--pulse{animation:vd-send-pulse .32s ease}@keyframes vd-send-pulse{0%{transform:scale(1);box-shadow:0 0 #5e5adb73}50%{transform:scale(.94);box-shadow:0 0 0 6px #5e5adb00}to{transform:scale(1);box-shadow:none}}.vd-chip,.vd-cta{transition:transform .16s ease,border-color .16s ease,background .16s ease}.vd-chip:active,.vd-cta:active{transform:scale(.97)}.vd-fab{position:fixed;right:20px;bottom:20px;width:56px;height:56px;border-radius:50%;border:none;background:var(--vd-primary);color:#fff;font-weight:700;box-shadow:0 8px 24px #5e5adb73;cursor:pointer;z-index:99990}.vd-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#11182773;z-index:99991;display:flex;align-items:flex-end}.vd-overlay--hidden{display:none}.vd-sheet{width:100%;height:85vh;background:#fff;border-radius:20px 20px 0 0;overflow:hidden;position:relative;display:flex;flex-direction:column}.vd-sheet .vd-panel{height:100%;border:none;border-radius:0;box-shadow:none}.vd-close{position:absolute;top:10px;right:12px;z-index:2;border:none;background:#ffffffe6;width:32px;height:32px;border-radius:50%;font-size:22px;line-height:1;cursor:pointer}.vd-body-lock{overflow:hidden}@media(min-width:768px){.vd-fab,.vd-overlay{display:none!important}}@media(prefers-reduced-motion:reduce){.vd-messages{scroll-behavior:auto}.vd-msg--enter-user,.vd-msg--enter-bot,.vd-msg--typing,.vd-msg--follow-up-animate,.vd-panel--follow-up,.vd-send--pulse,.vd-typing-dots span{animation:none!important}.vd-send,.vd-chip,.vd-cta{transition:none}}