:root{color:#101828;background:#e9e6df;font-family:Inter,PingFang SC,Microsoft YaHei,system-ui,sans-serif;font-synthesis:none;text-rendering:geometricPrecision}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}button,input,textarea{font:inherit}button{-webkit-tap-highlight-color:transparent}.app-shell{min-height:100vh;display:grid;place-items:center;padding:0;background:radial-gradient(circle at 20% 12%,rgba(255,255,255,.78),transparent 26%),linear-gradient(145deg,#e4e1da,#f6f4ee 48%,#d6d2cb)}.phone-frame{width:min(430px,100%);height:min(860px,100vh);min-height:min(680px,100vh);padding:0;border-radius:28px;background:transparent;box-shadow:0 22px 60px #11182729}.phone-screen{position:relative;height:100%;overflow:hidden;border-radius:28px;background:#f6f8fc;display:grid;grid-template-rows:86px minmax(0,1fr) 82px}.topbar{z-index:3;display:grid;grid-template-columns:34px minmax(0,1fr) 72px;align-items:center;gap:12px;padding:14px 18px 12px;border-bottom:1px solid #e6ebf2;background:#ffffffe6;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.nav-button{width:34px;height:34px;display:inline-grid;place-items:center;border:0;border-radius:9px;color:#4b5e7a;background:#f0f3f9;cursor:pointer}.title-block{min-width:0}.title-row{display:flex;align-items:center;gap:8px;min-width:0}h1{margin:0;color:#111827;font-size:17px;line-height:1.12;font-weight:900}.title-block p{margin:4px 0 0;color:#8a96aa;font-size:12px;line-height:1.1}.online-pill{display:inline-flex;align-items:center;gap:4px;height:20px;padding:0 7px;border-radius:999px;color:#009f5a;background:#dcfce7;font-size:11px;font-weight:800;white-space:nowrap}.online-pill i{width:6px;height:6px;border-radius:999px;background:#13b66b}.chat-scroll{position:relative;min-height:0;overflow:auto;padding:18px 18px 22px;background:#f7f9fc;scrollbar-width:none}.chat-scroll::-webkit-scrollbar{display:none}.stage-card{position:relative;display:flex;justify-content:flex-end;align-items:flex-start;margin:0}.avatar-video{position:relative;width:68px;height:68px;overflow:hidden;border:4px solid #fff;border-radius:14px;background:#0f65d7;box-shadow:0 14px 28px #0f172a3d}.fallback-face,.stream-video{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;object-fit:cover}.fallback-face{z-index:0}.stream-video{z-index:1;opacity:0;background:transparent;transition:opacity .16s ease}.stream-video.active{opacity:1}.live-badge{position:absolute;right:6px;bottom:5px;z-index:4;display:inline-flex;height:17px;align-items:center;padding:0 7px;border-radius:999px;color:#fff;background:#0f172a;font-size:10px;font-weight:800}.live-badge:before{content:"";width:5px;height:5px;margin-right:3px;border-radius:999px;background:#22c55e}.chat-row{display:flex;align-items:flex-start;gap:9px;margin:13px 0}.chat-row.user{justify-content:flex-end}.chat-row.assistant{justify-content:flex-start}.chat-avatar{flex:0 0 auto;width:28px;height:28px;margin-top:3px;border:2px solid #fff;border-radius:50%;object-fit:cover;background:#0f65d7;box-shadow:0 3px 10px #0f172a29}.bubble-stack{max-width:min(278px,78%);min-width:0;display:flex;flex-direction:column;gap:6px}.chat-row.user .bubble-stack{align-items:flex-end}.bubble{position:relative;margin:0;padding:13px 15px;border-radius:13px;color:#172033;background:#fff;box-shadow:0 1px 1px #1118270a,0 7px 18px #1118270f;font-size:14px;line-height:1.62;overflow-wrap:anywhere}.chat-row.user .bubble{border-bottom-right-radius:7px;color:#fff;background:#2468f2;box-shadow:0 12px 22px #2468f238}.chat-row.assistant .bubble{border:1px solid #e6ebf2;border-bottom-left-radius:7px}.meta{color:#9aa5b6;font-size:11px;line-height:1}.typing-row{margin-top:20px}.typing-bubble{display:inline-flex;align-items:center;gap:5px;min-height:35px;padding:0 14px;border:1px solid #e6ebf2;border-radius:13px;color:#96a2b6;background:#fff;box-shadow:0 7px 18px #1118270f;font-size:11px}.typing-bubble span{width:5px;height:5px;border-radius:999px;background:#b7ccff;animation:typing 1.1s ease-in-out infinite}.typing-bubble span:nth-child(2){animation-delay:.12s}.typing-bubble span:nth-child(3){animation-delay:.24s}.typing-bubble em{margin-left:4px;font-style:normal}@keyframes typing{0%,to{transform:translateY(0);opacity:.42}50%{transform:translateY(-2px);opacity:1}}.timing-block{margin:8px 0 14px 37px}.timing-summary{display:inline-flex;height:25px;align-items:center;gap:5px;border:1px solid #dbe7ff;border-radius:999px;padding:0 8px;color:#2468f2;background:#fff;font-size:11px;font-weight:800;cursor:pointer}.timing-summary svg:last-child{transition:transform .16s ease}.timing-summary svg.open{transform:rotate(180deg)}.timing-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:9px;width:min(292px,calc(100vw - 92px))}.timing-item{display:flex;min-width:0;align-items:center;justify-content:space-between;gap:8px;padding:8px 9px;border:1px solid #e6ecf6;border-radius:10px;background:#fff;color:#7b8798;font-size:11px}.timing-item strong{color:#172033;font-weight:900;white-space:nowrap}.error-box{margin:10px 0;padding:10px 12px;border:1px solid #fecaca;border-radius:12px;color:#991b1b;background:#fff1f2;font-size:13px;line-height:1.45}.bottom-composer{z-index:4;display:grid;grid-template-columns:minmax(0,1fr) 44px;gap:10px;align-items:center;padding:12px 17px 18px;border-top:1px solid #e6ebf2;background:#ffffffeb;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.input-shell{position:relative;min-width:0;height:45px;border:1px solid #dbe2ed;border-radius:999px;background:#fff;box-shadow:inset 0 1px #11182705}.input-shell textarea{width:100%;height:43px;min-height:0;resize:none;border:0;outline:none;padding:12px 68px 10px 16px;color:#172033;background:transparent;font-size:14px;line-height:20px;overflow:hidden}.input-shell textarea::placeholder{color:#8a96aa}.input-shell textarea:disabled{opacity:.64}.count{position:absolute;right:13px;bottom:-22px;color:#b3bdcb;font-size:11px;pointer-events:none}.send-button{width:44px;height:44px;display:inline-grid;place-items:center;border:0;border-radius:50%;color:#fff;background:#2468f2;box-shadow:0 12px 24px #2468f247;cursor:pointer}.send-button:disabled{cursor:not-allowed;background:#b8c7dc;box-shadow:none}.spin{animation:spin .9s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.auth-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:30;display:grid;place-items:center;padding:20px;background:#0f172a80;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.auth-dialog{display:flex;width:min(340px,100%);flex-direction:column;gap:14px;border:1px solid rgba(226,232,240,.9);border-radius:18px;padding:22px;background:#fff;box-shadow:0 24px 70px #0f172a3d}.auth-dialog h2{margin:0;color:#111827;font-size:20px;line-height:1.2}.auth-input{width:100%;height:44px;border:1px solid #dbe2ed;border-radius:12px;padding:0 13px;color:#172033;outline:none;background:#f8fafc}.auth-input:focus{border-color:#2468f2;box-shadow:0 0 0 3px #2468f21f}.auth-error{margin:-5px 0 0;color:#b91c1c;font-size:13px}.auth-button{display:inline-flex;height:44px;align-items:center;justify-content:center;gap:8px;border:0;border-radius:12px;color:#fff;background:#2468f2;cursor:pointer;font-weight:800}.auth-button:disabled{cursor:not-allowed;background:#b8c7dc}@media(max-width:520px){.app-shell{padding:0;background:#f7f9fc}.phone-frame{width:100%;height:100vh;min-height:100vh;padding:0;box-shadow:none}.phone-screen{border-radius:0}}