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infinite;--grid-color:rgba(96,199,193,0.04)}[data-theme=dark] .grid-lines{--grid-color:rgba(96,199,193,0.02)}@keyframes grid-scroll{0%{transform:translate(0)}to{transform:translate(60px,60px)}}::-webkit-scrollbar{width:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--line);border-radius:var(--radius-pill)}::-webkit-scrollbar-thumb:hover{background:var(--primary)}.chat-page{height:100dvh;display:flex;flex-direction:column}.top-bar{position:fixed;top:16px;right:20px;z-index:50}.theme-switcher,.top-bar{display:flex;align-items:center}.theme-switcher{background:var(--surface-raised);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--line-soft);border-radius:var(--radius-pill);padding:3px;gap:2px;box-shadow:var(--shadow-sm);transition:var(--transition-theme)}.theme-btn{all:unset;display:grid;place-items:center;width:30px;height:30px;border-radius:50%;cursor:pointer;color:var(--ink-muted);transition:all var(--transition-fast)}.theme-btn:hover{color:var(--ink);background:var(--line-soft)}.theme-btn[data-active=true]{color:var(--primary-strong);background:var(--primary-soft);box-shadow:0 0 10px var(--primary-glow)}.theme-btn svg{width:15px;height:15px;transition:transform var(--transition-fast)}.theme-btn:hover svg{transform:scale(1.15)}.welcome-view{flex:1 1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 20px;gap:32px;animation:fade-up .6s cubic-bezier(.16,1,.3,1) both}@keyframes fade-up{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.logo-wrap{display:flex;flex-direction:column;align-items:center;gap:8px}.logo-wrap[role=button]{cursor:pointer}.logo-text{font-family:var(--font-logo);font-size:clamp(3.2rem,7vw,5rem);font-weight:400;letter-spacing:.02em;margin:0;line-height:1;-webkit-user-select:none;-moz-user-select:none;user-select:none}.logo-text .logo-win{color:var(--ink);transition:color .45s ease}.logo-text .logo-ia{color:var(--primary);transition:color .45s ease}.logo-subtitle{margin:0;font-family:var(--font-title);font-size:.72rem;font-weight:600;letter-spacing:.28em;text-transform:uppercase;color:var(--ink-muted);transition:color .45s ease}.input-bar{width:min(620px,90%);display:flex;align-items:center;gap:8px;background:var(--surface-input);border:1px solid var(--line);border-radius:var(--radius-xl);padding:6px 8px 6px 20px;transition:all .3s ease;box-shadow:var(--shadow-sm)}.input-bar:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow),var(--shadow-md)}.input-bar textarea{flex:1 1;resize:none;border:none;background:transparent;font:inherit;font-size:.95rem;padding:10px 0;color:var(--ink);line-height:1.5;outline:none}.input-bar textarea::placeholder{color:var(--ink-muted)}.send-btn{all:unset;display:grid;place-items:center;width:44px;height:44px;border-radius:50%;cursor:pointer;background:linear-gradient(135deg,var(--primary),var(--primary-strong));color:#ffffff;flex-shrink:0;transition:all var(--transition-fast);box-shadow:0 2px 10px var(--primary-glow)}.send-btn:hover:not(:disabled){transform:scale(1.1);box-shadow:0 4px 20px var(--primary-glow)}.send-btn:active:not(:disabled){transform:scale(.93)}.send-btn:disabled{opacity:.3;cursor:not-allowed;box-shadow:none}.send-btn svg{width:20px;height:20px}.quick-questions{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;max-width:620px}.quick-questions button{border:1px solid var(--line);background:var(--surface-raised);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);color:var(--ink-soft);border-radius:var(--radius-pill);padding:8px 16px;font-weight:500;font-size:.84rem;font-family:var(--font-body);cursor:pointer;transition:all var(--transition-fast)}.quick-questions button:hover:not(:disabled){color:var(--ink);border-color:var(--primary);background:var(--primary-soft);transform:translateY(-1px);box-shadow:0 4px 12px var(--primary-glow)}.quick-questions button:active:not(:disabled){transform:translateY(0)}.quick-questions button:disabled{opacity:.35;cursor:not-allowed}.chat-view{flex:1 1;display:flex;flex-direction:column;max-height:100dvh;animation:fade-up .4s cubic-bezier(.16,1,.3,1) both}.chat-mini-header{display:flex;align-items:center;justify-content:center;padding:14px 20px;border-bottom:1px solid var(--line-soft);transition:var(--transition-theme)}.chat-mini-header .logo-text{font-size:1.6rem;cursor:pointer}.chat-log{flex:1 1;overflow-y:auto;overflow-x:hidden;padding:16px 20px}.chat-log,.chat-log-inner{display:flex;flex-direction:column;gap:6px}.chat-log-inner{width:min(720px,100%);margin:0 auto}.msg{display:flex;gap:10px;animation:msg-in .35s cubic-bezier(.16,1,.3,1) both}@keyframes msg-in{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.msg-user{justify-content:flex-end}.msg-assistant{justify-content:flex-start}.msg-avatar{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;flex-shrink:0;font-size:.7rem;font-weight:700;margin-top:2px}.msg-assistant .msg-avatar{background:linear-gradient(135deg,var(--primary),var(--primary-strong));color:#fff;box-shadow:0 2px 8px var(--primary-glow)}.msg-user .msg-avatar{background:var(--surface-alt);border:1px solid var(--line);color:var(--ink-soft);order:1}.msg-bubble{max-width:min(78%,560px);border-radius:20px;padding:12px 16px;line-height:1.6;font-size:.93rem;border:1px solid transparent;transition:var(--transition-theme);word-break:break-word}.msg-user .msg-bubble{background:var(--msg-user-bg);color:var(--msg-user-text);border-radius:20px 20px 6px 20px;box-shadow:0 2px 12px var(--primary-glow)}.msg-assistant .msg-bubble{background:var(--msg-ai-bg);border-color:var(--msg-ai-border);color:var(--msg-ai-text);border-radius:20px 20px 20px 6px}.chat-bottom{padding:10px 20px 16px;border-top:1px solid var(--line-soft);transition:var(--transition-theme)}.chat-bottom .input-bar{width:min(720px,100%);margin:0 auto}.loading-dots{display:inline-flex;align-items:center;gap:5px}.loading-dots span{width:7px;height:7px;border-radius:50%;background:var(--primary);animation:dot-bounce 1.4s ease-in-out infinite}.loading-dots span:nth-child(2){animation-delay:.16s}.loading-dots span:nth-child(3){animation-delay:.32s}@keyframes dot-bounce{0%,80%,to{transform:scale(.5);opacity:.3}40%{transform:scale(1.1);opacity:1}}.error-text{margin:6px auto 0;width:min(720px,100%);color:var(--error);font-weight:600;font-size:.85rem;background:var(--error-bg);padding:8px 14px;border-radius:var(--radius-sm);border:1px solid rgba(192,57,43,.12)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}@media (max-width:640px){.top-bar{top:10px;right:12px}.welcome-view{padding:30px 16px;gap:24px}.logo-text{font-size:clamp(2.6rem,12vw,3.8rem)}.input-bar{width:95%;padding:5px 6px 5px 14px}.quick-questions{gap:6px}.quick-questions button{font-size:.78rem;padding:6px 12px}.chat-log{padding:12px}.chat-bottom{padding:8px 12px 12px}.msg-bubble{max-width:88%}.msg-avatar{width:26px;height:26px;font-size:.6rem}.chat-mini-header .logo-text{font-size:1.3rem}.logo-subtitle{font-size:.62rem;letter-spacing:.22em}}