*{box-sizing:border-box}html,body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#222}button,input,textarea{font:inherit}button{cursor:pointer}.auth-bg{min-height:100dvh;background:#f4f5f7;display:grid;place-items:center;padding:20px}.auth-card{width:min(100%,420px);background:#fff;border-radius:16px;padding:26px;box-shadow:0 8px 30px #0000000c}.auth-card h1{text-align:center;font-size:24px;margin:4px 0 24px}.tabs{display:flex;border-bottom:1px solid #eee;margin-bottom:20px}.tabs button{flex:1;background:none;border:0;padding:12px;color:#888}.tabs button.active{color:#07c160;border-bottom:2px solid #07c160}.auth-card input{width:100%;padding:13px;border:1px solid #ddd;border-radius:8px;margin:0 0 12px;outline-color:#07c160}.primary{width:100%;border:0;border-radius:8px;background:#07c160;color:white;padding:13px;margin-top:8px}.avatar-title{font-size:14px;color:#666;margin:8px 0}.avatars{display:flex;gap:10px;flex-wrap:wrap;margin:12px 0 18px}.avatar-choice{width:46px;height:46px;border-radius:50%;border:3px solid transparent;padding:0;background:#eee}.avatar-choice.selected{border-color:#07c160}.avatar-choice img{width:100%;height:100%;border-radius:50%}.notice{font-size:13px;color:#d33;min-height:18px}.chat-page{height:100dvh;background:#ededed;display:flex;flex-direction:column;overflow:hidden}.chat-head{height:52px;flex-shrink:0;background:#f7f7f7;border-bottom:1px solid #ddd;display:flex;align-items:center;justify-content:space-between;padding:0 14px}.chat-head>span{font-size:26px;color:#777}.chat-head strong{font-size:17px}.chat-head button{border:0;background:none;color:#666;font-size:14px}.messages{flex:1;overflow-y:auto;padding:14px 12px;display:flex;flex-direction:column;gap:16px}.message-row{display:flex;align-items:flex-start;gap:9px;max-width:88%}.message-row.mine{align-self:flex-end;flex-direction:row-reverse}.avatar{width:40px;height:40px;flex:0 0 40px;border-radius:4px;object-fit:cover;background:#ddd}.msg-body{display:flex;flex-direction:column;gap:5px;min-width:0}.mine .msg-body{align-items:flex-end}.msg-name{font-size:12px;color:#888}.bubble{position:relative;padding:10px 12px;border-radius:4px;background:white;line-height:1.45;word-break:break-word;white-space:pre-wrap;font-size:16px}.mine .bubble{background:#95ec69}.bubble:before{content:"";position:absolute;top:12px;left:-5px;border-top:5px solid transparent;border-bottom:5px solid transparent;border-right:6px solid white}.mine .bubble:before{left:auto;right:-5px;border-right:0;border-left:6px solid #95ec69}.msg-time{font-size:10px;color:#aaa}.composer{padding:9px 10px calc(9px + env(safe-area-inset-bottom));background:#f7f7f7;border-top:1px solid #ddd;display:flex;align-items:flex-end;gap:8px}.composer textarea{resize:none;max-height:100px;flex:1;border:0;border-radius:5px;background:white;padding:10px;outline:none}.send-btn{border:0;border-radius:5px;background:#07c160;color:white;padding:10px 14px}.empty{margin:auto;color:#999;font-size:14px}