:root{--wx-bg: #ededed;--wx-green: #07c160;--wx-bubble-user: #95ec69;--wx-bubble-bot: #ffffff;--wx-header: #ededed;--wx-text: #181818;--wx-muted: #888;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px)}*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}html,body,#app{height:100%}body{font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Helvetica Neue,Microsoft YaHei,system-ui,sans-serif;background:var(--wx-bg);color:var(--wx-text);font-size:16px;line-height:1.5;overscroll-behavior-y:none}.app{display:flex;flex-direction:column;height:100dvh;max-width:640px;margin:0 auto;background:var(--wx-bg)}.header{flex:0 0 auto;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:calc(8px + var(--safe-top)) 12px 8px;background:var(--wx-header);border-bottom:1px solid rgba(0,0,0,.06);position:sticky;top:0;z-index:10}.header-left{justify-self:start}.header-right{justify-self:end}.header-title{justify-self:center;display:inline-flex;align-items:center;gap:5px;font-size:17px;font-weight:600;white-space:nowrap}.ai-tag{font-size:10px;font-weight:700;letter-spacing:.5px;color:#fff;background:linear-gradient(135deg,#07c160,#1aa3ff);padding:1px 5px;border-radius:4px;line-height:1.4}.quota{display:inline-flex;align-items:center;gap:3px;font-size:13px;font-weight:600;color:#6b4e00;background:linear-gradient(180deg,#ffe89a,#f6c84c);border:1px solid #e0a826;padding:4px 10px;border-radius:13px;box-shadow:inset 0 1px #fff9;white-space:nowrap}.info-btn{width:26px;height:26px;border:1.5px solid #9a9a9a;border-radius:50%;background:none;color:#555;font-size:15px;font-style:italic;font-family:Georgia,Times New Roman,serif;font-weight:700;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center}.thread{flex:1 1 auto;overflow-y:auto;-webkit-overflow-scrolling:touch;padding:12px 12px 4px}.row{display:flex;align-items:flex-start;gap:8px;margin:10px 0}.row-user{flex-direction:row-reverse}.avatar{flex:0 0 auto;width:40px;height:40px;border-radius:5px;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:600;color:#fff;object-fit:cover}.avatar-bot{background:#ddd}.avatar-user{background:#b0b0b0}.row-body{display:flex;flex-direction:column;align-items:flex-start;gap:0}.avatar-wrap{position:relative;flex:0 0 auto}.avatar-ai{position:absolute;right:-3px;bottom:-3px;font-size:9px;font-weight:700;letter-spacing:.3px;color:#fff;background:linear-gradient(135deg,#07c160,#1aa3ff);padding:0 4px;border-radius:4px;border:1.5px solid var(--wx-bg);line-height:1.5}.bubble{position:relative;max-width:74%;padding:9px 12px;border-radius:6px;font-size:16px;word-break:break-word;white-space:pre-wrap}.bubble-user{background:var(--wx-bubble-user)}.bubble-bot{background:var(--wx-bubble-bot)}.bubble-text{background:var(--wx-bubble-bot);max-width:82%;font-size:15px;line-height:1.65}.bubble:before{content:"";position:absolute;top:13px;width:0;height:0;border:6px solid transparent}.bubble-bot:before{left:-11px;border-right-color:var(--wx-bubble-bot)}.bubble-user:before{right:-11px;border-left-color:var(--wx-bubble-user)}.bubble-error{color:#d4380d;font-size:14px}.voice{position:relative;display:flex;align-items:center;gap:10px;background:var(--wx-bubble-bot);border-radius:6px;padding:11px 14px;cursor:pointer;user-select:none;margin-bottom:2px}.voice:before{content:"";position:absolute;top:13px;left:-11px;width:0;height:0;border:6px solid transparent;border-right-color:var(--wx-bubble-bot)}.voice-dur{font-size:15px;color:#333}.voice-spinner{display:inline-block;width:18px;height:18px;border:2px solid rgba(7,193,96,.3);border-top-color:var(--wx-green);border-radius:50%;animation:spin .7s linear infinite;flex:0 0 auto}@keyframes spin{to{transform:rotate(360deg)}}.voice-wave{display:inline-flex;align-items:center;gap:3px;height:18px}.voice-wave i{width:3px;border-radius:2px;background:var(--wx-green)}.voice-wave i:nth-child(1){height:7px}.voice-wave i:nth-child(2){height:12px}.voice-wave i:nth-child(3){height:18px}.voice.playing .voice-wave i{animation:voicebar .7s infinite ease-in-out}.voice.playing .voice-wave i:nth-child(2){animation-delay:.15s}.voice.playing .voice-wave i:nth-child(3){animation-delay:.3s}@keyframes voicebar{0%,to{transform:scaleY(.4)}50%{transform:scaleY(1)}}.time-divider{text-align:center;font-size:12px;color:var(--wx-muted);margin:14px 0 6px}.indicator{display:inline-flex;align-items:center;gap:6px;color:var(--wx-muted);font-size:14px;min-height:22px;white-space:nowrap}.indicator-dots{display:inline-flex;gap:3px}.indicator-dots i{width:5px;height:5px;border-radius:50%;background:var(--wx-muted);animation:blink 1.2s infinite both}.indicator-dots i:nth-child(2){animation-delay:.2s}.indicator-dots i:nth-child(3){animation-delay:.4s}@keyframes blink{0%,80%,to{opacity:.25}40%{opacity:1}}.indicator-wave{display:inline-flex;align-items:flex-end;gap:2px;height:14px}.indicator-wave i{width:3px;height:100%;background:var(--wx-green);border-radius:2px;animation:wave .9s infinite ease-in-out}.indicator-wave i:nth-child(2){animation-delay:.15s}.indicator-wave i:nth-child(3){animation-delay:.3s}.indicator-wave i:nth-child(4){animation-delay:.45s}@keyframes wave{0%,to{transform:scaleY(.3)}50%{transform:scaleY(1)}}.composer{flex:0 0 auto;display:flex;align-items:flex-end;gap:8px;padding:8px 10px calc(8px + var(--safe-bottom));background:#f7f7f7;border-top:1px solid rgba(0,0,0,.06)}.icon-btn{flex:0 0 auto;width:38px;height:38px;border:none;border-radius:6px;background:#fff;font-size:20px;cursor:pointer}.composer-input{flex:1 1 auto;resize:none;border:none;border-radius:6px;padding:9px 12px;font:inherit;font-size:16px;background:#fff;max-height:120px}.composer-input:focus{outline:none}.send-btn{flex:0 0 auto;border:none;border-radius:6px;padding:0 16px;height:38px;background:var(--wx-green);color:#fff;font-size:15px;font-weight:600;cursor:pointer}.send-btn:disabled{background:#b2e6c6;cursor:default}.toast{position:fixed;left:50%;bottom:90px;transform:translate(-50%);background:#000000c7;color:#fff;font-size:14px;padding:10px 16px;border-radius:8px;max-width:80%;text-align:center;z-index:50;animation:toast-in .18s ease-out}@keyframes toast-in{0%{opacity:0;transform:translate(-50%,6px)}}.login{height:100dvh;display:flex;align-items:center;justify-content:center;background:var(--wx-bg);padding:20px}.login-card{width:100%;max-width:340px;background:#fff;border-radius:14px;padding:32px 24px;text-align:center;box-shadow:0 6px 24px #00000014}.login-logo{width:60px;height:60px;margin:0 auto 16px;border-radius:14px;background:var(--wx-green);color:#fff;font-size:30px;font-weight:600;display:flex;align-items:center;justify-content:center}.login-title{font-size:19px;margin-bottom:6px}.login-hint{font-size:13px;color:var(--wx-muted);margin-bottom:18px}.login-input{width:100%;border:1px solid #e5e5e5;border-radius:8px;padding:12px;font-size:16px;text-align:center;margin-bottom:12px}.login-input:focus{outline:none;border-color:var(--wx-green)}.login-btn{width:100%;border:none;border-radius:8px;padding:12px;background:var(--wx-green);color:#fff;font-size:16px;font-weight:600;cursor:pointer}.login-btn:disabled{background:#b2e6c6}.login-err{color:#d4380d;font-size:13px;margin-top:12px}.disclaimer-card{max-width:400px;text-align:left}.disclaimer-card .login-title{text-align:center}.disclaimer-list{list-style:none;margin:16px 0 18px;padding:0}.disclaimer-list li{position:relative;font-size:13px;line-height:1.7;color:#444;padding-left:18px;margin-bottom:10px}.disclaimer-list li:before{content:"•";position:absolute;left:4px;color:var(--wx-green)}.disclaimer-check{display:flex;align-items:flex-start;gap:8px;font-size:13px;color:#333;margin-bottom:16px;cursor:pointer}.disclaimer-check input{width:16px;height:16px;margin-top:2px;flex:0 0 auto}.link-btn{width:100%;border:none;background:none;color:var(--wx-muted);font-size:13px;margin-top:10px;cursor:pointer}.modal-overlay{position:fixed;inset:0;background:#00000073;display:flex;align-items:center;justify-content:center;padding:20px;z-index:100;animation:fade-in .15s ease-out}@keyframes fade-in{0%{opacity:0}}.modal-overlay .disclaimer-card{max-height:86vh;overflow-y:auto}