:root{color:#111;background:#fff;font-family:PingFang SC,Microsoft YaHei,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}*{box-sizing:border-box}html,body,#root{width:100%;height:100%;margin:0}body{min-width:320px;overflow:hidden}button,input{font:inherit}button{-webkit-tap-highlight-color:transparent}.app-shell{position:relative;display:flex;width:100%;max-width:480px;height:100dvh;margin:0 auto;overflow:hidden;background:#fff;flex-direction:column}.center-shell{align-items:center;justify-content:center}.loading-icon,.spin{animation:spin .9s linear infinite}.access-page{display:grid;min-height:100dvh;padding:24px;place-items:center;background:#f6f7f9}.access-panel{display:flex;width:min(100%,360px);padding:26px;border:1px solid #eeeeee;border-radius:8px;background:#fff;box-shadow:0 18px 45px #00000014;flex-direction:column;gap:14px}.access-kicker{margin:0 0 4px;color:#8b8f97;font-size:13px}.access-panel h1{margin:0;font-size:28px;line-height:1.2}.access-copy{margin:8px 0 0;color:#777d86;font-size:14px}.access-label{color:#333;font-size:14px}.access-panel input{width:100%;height:46px;padding:0 14px;border:1px solid #e1e4e8;border-radius:8px;outline:none;font-size:16px}.access-panel input:focus{border-color:#15a8f5;box-shadow:0 0 0 3px #15a8f524}.form-error{margin:0;color:#d83434;font-size:13px}.access-submit{height:46px;border:0;border-radius:8px;color:#fff;background:#0fa8f6;cursor:pointer;font-size:17px;font-weight:600}.access-submit:disabled{opacity:.65}.chat-header{position:relative;z-index:2;display:grid;height:63px;padding:calc(env(safe-area-inset-top) + 12px) 16px 8px;align-items:center;background:#fffffff5;grid-template-columns:56px 1fr 56px}.icon-button{display:grid;width:38px;height:38px;padding:0;border:0;color:#111;background:transparent;cursor:pointer;place-items:center}.chat-title{display:flex;width:100%;min-width:0;padding:0;border:0;align-items:center;justify-self:center;color:inherit;background:transparent;cursor:pointer;flex-direction:column;line-height:1.15}.chat-title strong{color:#161616;font-size:16px;font-weight:600}.chat-title span{margin-top:4px;color:#9b9b9b;font-size:12px}.agent-page{background:#f7f7f7}.agent-header{position:relative;z-index:2;display:flex;height:58px;padding:calc(env(safe-area-inset-top) + 12px) 12px 8px;align-items:center}.agent-profile{display:flex;padding:6px 28px 0;align-items:center;flex:1;flex-direction:column}.agent-avatar{width:116px;height:202px;border-radius:18px;object-fit:cover;box-shadow:0 1px #00000008}.agent-profile h1{margin:24px 0 0;color:#151515;font-size:20px;font-weight:800;letter-spacing:0;line-height:1.3;text-align:center}.new-topic-card{position:absolute;right:14px;bottom:calc(env(safe-area-inset-bottom) + 28px);left:14px;display:grid;min-height:54px;padding:8px 12px 8px 14px;border:0;border-radius:14px;align-items:center;color:#151515;background:#fff;cursor:pointer;font-size:16px;font-weight:700;grid-template-columns:30px 1fr 28px;gap:12px;text-align:left}.new-topic-icon{display:grid;width:30px;height:30px;border-radius:10px;color:#fff;background:#0b7dff;place-items:center}.new-topic-chevron{color:#c8c8c8;justify-self:end}.message-list{flex:1;min-height:0;padding:24px 14px 134px;overflow-y:auto;scroll-behavior:smooth}.message-row{display:flex;width:100%;margin:0 0 14px}.message-row-user{justify-content:flex-end}.message-row-bot{justify-content:flex-start}.message-bubble{--bubble-radius: 32px;max-width:min(84%,382px);padding:14px 18px;border-radius:var(--bubble-radius);corner-shape:squircle;font-size:22px;line-height:1.48;white-space:pre-wrap;overflow-wrap:anywhere}.message-bubble-user{color:#fff;background:#0fa8f6}.message-bubble-bot{color:#171717;background:#f6f6f6}@supports not (corner-shape: squircle){.message-bubble{border-radius:32px}}.typing-dot{display:inline-block;min-width:35px;letter-spacing:0}.empty-state{display:flex;padding-top:48px}.empty-state p{margin:0;padding:14px 18px;border-radius:14px;color:#171717;background:#f6f6f6;font-size:22px;line-height:1.45}.jump-button{position:absolute;right:50%;bottom:151px;z-index:3;display:grid;width:42px;height:42px;padding:0;border:1px solid rgba(0,0,0,.04);border-radius:50%;color:#111;background:#fff;box-shadow:0 5px 17px #0000002e;cursor:pointer;place-items:center;transform:translate(50%)}.toast{position:absolute;right:18px;bottom:96px;left:18px;z-index:4;padding:10px 12px;border-radius:8px;color:#9b2020;background:#fff1f1;box-shadow:0 8px 24px #00000014;font-size:14px}.composer{position:absolute;right:14px;bottom:calc(env(safe-area-inset-bottom) + 12px);left:14px;z-index:3;display:grid;min-height:62px;padding:6px 9px 6px 14px;border-radius:19px;background:#fff;box-shadow:0 8px 28px #00000029;grid-template-columns:1fr 34px;gap:10px}.composer input{width:100%;min-width:0;height:50px;padding:0;border:0;border-radius:0;outline:none;color:#151515;background:transparent;font-size:17px;font-weight:500}.composer input::placeholder{color:#9b9b9b;opacity:1}.send-button{display:grid;width:30px;height:30px;padding:0;border:0;border-radius:50%;align-self:center;color:#fff;background:#0b7dff;cursor:pointer;place-items:center}.send-button:disabled{background:#aacff9;cursor:default}@keyframes spin{to{transform:rotate(360deg)}}@media(min-width:640px){body{background:#eef1f4}.app-shell{border-right:1px solid #e5e7eb;border-left:1px solid #e5e7eb}}@media(max-width:380px){.chat-header{grid-template-columns:48px 1fr 48px}.message-bubble,.empty-state p{font-size:20px}}