:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}:root{font-family:Inter,Segoe UI,system-ui,-apple-system,BlinkMacSystemFont,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;color:#0f172a;background-color:#edf1f7}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at top,#f9fbff,#e2e8f0 45%,#dbe2ee);color:#0f172a}#root{width:100%;height:100%}.app-shell{min-height:100vh;padding:3rem 1.5rem;display:flex;align-items:center;justify-content:center}.chat-panel{width:100%;max-width:860px;background:#fff;border-radius:28px;border:1px solid rgba(15,23,42,.06);padding:2.5rem;box-shadow:0 25px 70px #0f172a14;display:flex;flex-direction:column;gap:1.5rem}.chat-header{display:flex;justify-content:space-between;gap:1rem;align-items:flex-start}.chat-label{font-size:.85rem;text-transform:uppercase;letter-spacing:.2em;color:#0f172a8c;margin:0 0 .35rem}.chat-header h1{margin:0;font-size:2rem;color:#0f172a}.chat-subtitle{margin:.2rem 0 0;color:#0f172ab3;font-size:.95rem}.chat-status{background:linear-gradient(135deg,#06b6d4,#3b82f6);color:#fff;font-weight:600;border-radius:999px;padding:.4rem 1rem;font-size:.85rem;box-shadow:0 10px 25px #3b82f659;white-space:nowrap}.chat-window{height:420px;border-radius:1.5rem;border:1px solid rgba(15,23,42,.05);background:linear-gradient(180deg,#f8fbff,#fff);padding:1.5rem;overflow-y:auto;display:flex;flex-direction:column;gap:.75rem}.chat-window::-webkit-scrollbar{width:8px}.chat-window::-webkit-scrollbar-thumb{background:#0f172a26;border-radius:10px}.chat-bubble{max-width:92%;padding:1rem 1.2rem;border-radius:1.2rem;border:1px solid transparent;display:flex;flex-direction:column;gap:.35rem;line-height:1.5}.chat-bubble-user{align-self:flex-end;background:linear-gradient(135deg,#2563eb,#7c3aed);color:#fff;border-bottom-right-radius:.35rem;box-shadow:0 15px 35px #4c1d9540}.chat-bubble-ai{align-self:flex-start;background:#fff;border:1px solid rgba(15,23,42,.08);border-bottom-left-radius:.35rem;box-shadow:0 10px 25px #0f172a14}.chat-bubble-meta{font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:inherit;opacity:.8}.chat-bubble-content{white-space:pre-wrap;font-size:.98rem}.chat-composer{display:flex;gap:.75rem;align-items:flex-end;background:#0f172a05;border-radius:1.2rem;padding:1rem;border:1px solid rgba(15,23,42,.06)}.chat-input{flex:1;border:none;resize:none;background:transparent;font-size:1rem;line-height:1.5;color:#0f172a;font-family:inherit}.chat-input:focus{outline:none}.chat-send{border:none;border-radius:999px;padding:.8rem 1.8rem;font-size:1rem;font-weight:600;color:#fff;background:linear-gradient(135deg,#2563eb,#0ea5e9);box-shadow:0 15px 35px #2563eb4d;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,opacity .15s ease}.chat-send:disabled{opacity:.6;cursor:not-allowed;box-shadow:none}.chat-send:not(:disabled):hover{transform:translateY(-1px);box-shadow:0 20px 35px #2563eb59}@media(max-width:720px){.app-shell{padding:1.5rem 1rem}.chat-panel{padding:1.5rem;border-radius:20px}.chat-header{flex-direction:column}.chat-status{align-self:flex-start}.chat-composer{flex-direction:column}.chat-send{width:100%}}