:root{font-family:Inter,"Microsoft YaHei",sans-serif;color:#202124;background:#f7f8fa;--accent:#4f6df5;--line:#e6e8ee;--panel:#fff}*{box-sizing:border-box}body{margin:0}.hidden{display:none!important}button,input,textarea{font:inherit}.auth-shell{min-height:100vh;display:grid;place-items:center;background:radial-gradient(circle at 50% 0,#eef1ff,#f8f9fb 45%)}.auth-card{width:min(390px,calc(100% - 32px));padding:36px;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:0 18px 60px #25315b18;text-align:center}.brand-mark{width:52px;height:52px;margin:auto;display:grid;place-items:center;border-radius:15px;background:linear-gradient(135deg,#526ff5,#8e63f5);color:#fff;font-weight:800;font-size:24px}.brand-mark.small{width:32px;height:32px;margin:0;border-radius:9px;font-size:15px}.auth-card h1{margin:18px 0 6px}.auth-card p{color:#777}.auth-card label{display:block;text-align:left;margin:16px 0;color:#555;font-size:13px}.auth-card input{display:block;width:100%;padding:12px;margin-top:7px;border:1px solid var(--line);border-radius:10px;outline:none}.auth-card input:focus{border-color:var(--accent)}.auth-card button[type=submit]{width:100%;border:0;border-radius:10px;padding:12px;background:var(--accent);color:#fff;cursor:pointer}.link-button{border:0;background:none;color:var(--accent);margin-top:14px;cursor:pointer}.error{color:#c93434!important;min-height:20px}.app{height:100vh;display:grid;grid-template-columns:260px minmax(420px,1fr) 360px}.sidebar,.analysis{background:var(--panel);border-right:1px solid var(--line);min-width:0}.sidebar{padding:18px 12px;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:10px;padding:0 8px 18px}.new-chat{padding:11px;border:1px solid #dfe3f4;border-radius:10px;background:#f4f6ff;color:#354fc5;cursor:pointer;text-align:left}.sessions{flex:1;overflow:auto;padding-top:16px}.session{padding:10px;border-radius:9px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;cursor:pointer;font-size:14px}.session:hover,.session.active{background:#f1f3f8}.account{border-top:1px solid var(--line);padding:14px 8px 0;display:flex;justify-content:space-between;font-size:13px}.account button{border:0;background:none;color:#777;cursor:pointer}.chat{min-width:0;display:flex;flex-direction:column;background:#fbfbfc}.chat>header{height:66px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 25px}.chat h2{font-size:15px;margin:0 0 3px}.chat small{color:#8a8d95}.messages{flex:1;overflow:auto;padding:28px max(24px,calc((100% - 760px)/2)) 160px}.welcome{text-align:center;margin:18vh auto;color:#373a42}.welcome p{color:#7a7d85}.message{margin:18px 0;line-height:1.75;white-space:pre-wrap}.message.user{max-width:78%;margin-left:auto;background:#eef1f8;padding:10px 16px;border-radius:16px}.message.assistant{padding:4px}.tool-event{font-size:13px;color:#657084;border-left:2px solid #aab7ed;padding:4px 10px;margin:7px 0}.composer{position:absolute;bottom:22px;left:calc(260px + max(24px,(100vw - 260px - 360px - 760px)/2));right:calc(360px + max(24px,(100vw - 260px - 360px - 760px)/2));display:flex;align-items:flex-end;gap:8px;background:#fff;border:1px solid #dfe2e9;border-radius:18px;padding:10px 10px 10px 16px;box-shadow:0 12px 35px #24305a16}.composer textarea{flex:1;resize:none;border:0;outline:0;max-height:160px;line-height:1.5}.composer button{width:36px;height:36px;border-radius:12px;border:0;background:var(--accent);color:#fff;cursor:pointer}.analysis{border-left:1px solid var(--line);border-right:0;overflow:auto}.analysis>header{height:66px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 18px}.analysis header button{border:0;background:none;font-size:22px;cursor:pointer}.analysis-content{padding:18px}.data-card{border:1px solid var(--line);border-radius:12px;padding:13px;margin-bottom:12px;background:#fff}.data-card h3{font-size:14px;margin:0 0 10px}.data-card pre{overflow:auto;font-size:11px}.muted{color:#888}.kline-canvas{width:100%;height:240px;background:#fff}.mobile-only{display:none}@media(max-width:1050px){.app{grid-template-columns:240px 1fr}.analysis{display:none}.composer{left:calc(240px + 24px);right:24px}}@media(max-width:700px){.app{display:block}.sidebar{display:none;position:fixed;inset:0 25% 0 0;z-index:5}.sidebar.open{display:flex}.chat{height:100vh}.mobile-only{display:block;border:0;background:none;margin-right:12px}.composer{left:12px;right:12px;bottom:12px}.messages{padding:20px 15px 130px}.message.user{max-width:90%}}

.composer .voice-button{flex:0 0 36px;background:#eef1f7;color:#5f6673;font-size:17px}
.composer .voice-button:hover{background:#e3e8f2;color:#4056aa}
.composer .voice-button.recording{background:#e5484d;color:#fff;animation:voice-pulse 1.2s ease-in-out infinite}
.composer .voice-button:disabled{cursor:wait;opacity:.65;animation:none}
@keyframes voice-pulse{50%{box-shadow:0 0 0 7px rgba(229,72,77,.14)}}