:root{--bg:#edecf0;--ink:#1c2230;--sub:#6b7486;--glass:rgba(255,255,255,.55);--line:rgba(255,255,255,.75);--accent:#4f6dff;--amp:0}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;overflow:hidden;color:var(--ink);font-family:-apple-system,"SF Pro Text","PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;background:var(--bg)}
.backdrop{position:fixed;inset:0;background:radial-gradient(55% 50% at 18% 12%,#dde3ff 0,transparent 60%),radial-gradient(50% 50% at 85% 88%,#ffe4d8 0,transparent 60%),linear-gradient(160deg,#f1f1f5,#dcdde4)}
#phone{position:relative;width:100%;height:100dvh;margin:0 auto;overflow:hidden;background:var(--bg)}
@media (min-width:600px){#phone{width:390px;height:min(844px,calc(100dvh - 48px));top:50%;transform:translateY(-50%);border-radius:46px;
  box-shadow:0 40px 90px rgba(40,50,80,.25),0 0 0 9px #fff,0 0 0 10px rgba(0,0,0,.06)}}
#stage,#dock,.mic,.icon-btn,.caption,.avatar,.avatar *{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
img,video{-webkit-user-drag:none;pointer-events:none}
/* stage: video fills the top, bottom fades into the page bg */
#stage{position:absolute;inset:0}
.avatar{position:absolute;left:0;right:0;top:0;height:78%;-webkit-mask-image:linear-gradient(#000 0,#000 70%,transparent 100%);mask-image:linear-gradient(#000 0,#000 70%,transparent 100%)}
.av-layer{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:50% 0;opacity:0;transform:translateZ(0);will-change:opacity;background:var(--video-bg,#eeeef2)}
.av-layer.on{opacity:1}
.halo{position:absolute;left:50%;top:40%;width:110%;aspect-ratio:1;transform:translate(-50%,-50%);border-radius:50%;filter:blur(40px);opacity:0;transition:opacity .5s,background .5s;
  background:radial-gradient(circle,rgba(79,109,255,.30),transparent 62%);pointer-events:none}
#stage[data-state=speaking] .halo{opacity:calc(.45 + var(--amp)*.5)}
#stage[data-state=listening] .halo{opacity:.7;background:radial-gradient(circle,rgba(255,122,89,.32),transparent 62%)}
#stage[data-state=thinking] .halo{opacity:.55;background:radial-gradient(circle,rgba(150,120,255,.3),transparent 62%);animation:pulse 1.8s ease-in-out infinite}
@keyframes pulse{50%{opacity:.25}}
.aigc{position:absolute;top:calc(env(safe-area-inset-top) + 16px);left:16px;font-size:10px;letter-spacing:.5px;color:rgba(28,34,48,.5);padding:2px 6px;border-radius:6px;background:rgba(255,255,255,.4);border:1px solid rgba(255,255,255,.6)}
.caption{position:absolute;left:22px;right:22px;bottom:calc(140px + env(safe-area-inset-bottom));text-align:center;font-size:18px;line-height:1.55;font-weight:500;color:var(--ink);
  text-shadow:0 1px 0 rgba(255,255,255,.9),0 0 16px rgba(255,255,255,.95);min-height:1.6em;transition:opacity .25s;pointer-events:none}
.caption:empty{opacity:0}.caption .me{color:var(--sub);font-weight:400;font-size:14px}
/* buttons */
.icon-btn{flex:0 0 auto;width:50px;height:50px;border-radius:50%;border:1px solid var(--line);background:var(--glass);backdrop-filter:blur(14px) saturate(1.4);-webkit-backdrop-filter:blur(14px) saturate(1.4);
  display:grid;place-items:center;color:var(--ink);box-shadow:0 6px 18px rgba(40,50,80,.10);cursor:pointer;touch-action:manipulation;padding:0}
.icon-btn svg,.mic svg,.textbar svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.icon-btn.top{position:absolute;top:calc(env(safe-area-inset-top) + 10px);right:14px;width:40px;height:40px}
.icon-btn:active{transform:scale(.94)}
#dock{position:absolute;left:0;right:0;bottom:0;padding:0 30px calc(30px + env(safe-area-inset-bottom));display:flex;align-items:center;justify-content:space-between}
.hint{position:absolute;left:0;right:0;bottom:calc(9px + env(safe-area-inset-bottom));text-align:center;font-size:11px;color:var(--sub);pointer-events:none}
.mic{position:relative;width:84px;height:84px;border-radius:50%;border:0;cursor:pointer;color:#fff;touch-action:none;display:grid;place-items:center;padding:0;
  background:radial-gradient(circle at 35% 30%,#8aa3ff,#5873ff 55%,#3f57e8);box-shadow:0 14px 32px rgba(79,109,255,.40),inset 0 1px 1px rgba(255,255,255,.6);transition:transform .15s,background .2s}
.mic svg{width:30px;height:30px;transition:opacity .15s}
.mic .ring{position:absolute;inset:0;border-radius:50%;border:2px solid rgba(255,122,89,.45);opacity:0}
.mic.on{transform:scale(1.08);background:radial-gradient(circle at 35% 30%,#ffa47f,#ff7a59 55%,#f0603f);box-shadow:0 14px 36px rgba(255,122,89,.45)}
.mic.on .ring{animation:ripple 1.4s ease-out infinite}.mic.on .r2{animation-delay:.7s}
@keyframes ripple{0%{transform:scale(1);opacity:.9}100%{transform:scale(1.9);opacity:0}}
.mic .wave{position:absolute;display:flex;gap:3px;align-items:center;height:26px;opacity:0}
.mic .wave i{width:3px;border-radius:2px;background:#fff;height:30%;animation:wv .9s ease-in-out infinite}
.mic .wave i:nth-child(2){animation-delay:.1s}.mic .wave i:nth-child(3){animation-delay:.2s}.mic .wave i:nth-child(4){animation-delay:.3s}.mic .wave i:nth-child(5){animation-delay:.4s}
@keyframes wv{50%{height:100%}}
.mic.on svg{opacity:0}.mic.on .wave{opacity:1}
#stopBtn{opacity:.35;pointer-events:none;transition:opacity .2s}
#stage[data-state=speaking]~#dock #stopBtn,#stage[data-state=thinking]~#dock #stopBtn{opacity:1;pointer-events:auto}
.textbar{display:none;flex:1;margin-left:12px;height:52px;padding:4px 4px 4px 16px;border-radius:26px;background:rgba(255,255,255,.8);border:1px solid var(--line);
  backdrop-filter:blur(14px);box-shadow:0 8px 24px rgba(40,50,80,.12);align-items:center}
.textbar input{flex:1;min-width:0;border:0;outline:none;background:transparent;font-size:16px;color:var(--ink)}
.textbar button{width:44px;height:44px;border-radius:50%;border:0;background:var(--accent);color:#fff;display:grid;place-items:center;padding:0}
#dock.typing .mic,#dock.typing #stopBtn,#dock.typing .hint{display:none}#dock.typing .textbar{display:flex}
.sheet{position:absolute;left:10px;right:10px;bottom:calc(126px + env(safe-area-inset-bottom));max-height:55%;border-radius:24px;background:rgba(255,255,255,.66);
  backdrop-filter:blur(22px) saturate(1.5);-webkit-backdrop-filter:blur(22px) saturate(1.5);border:1px solid var(--line);box-shadow:0 20px 50px rgba(40,50,80,.18);
  transform:translateY(20px) scale(.98);opacity:0;pointer-events:none;transition:.28s cubic-bezier(.2,.8,.2,1);display:flex;flex-direction:column;z-index:5}
.sheet.open{transform:none;opacity:1;pointer-events:auto}
.grab{width:36px;height:4px;border-radius:2px;background:rgba(0,0,0,.15);margin:8px auto 2px}
#log{overflow:auto;padding:6px 14px 14px;scrollbar-width:none}
.msg{margin:8px 0;padding:9px 13px;max-width:86%;line-height:1.55;font-size:14.5px;white-space:pre-wrap;word-break:break-word}
.user{margin-left:auto;color:#fff;border-radius:18px 18px 6px 18px;background:linear-gradient(135deg,#6a86ff,#4f6dff)}
.bot{border-radius:18px 18px 18px 6px;background:rgba(255,255,255,.92)}
.refused{background:#fff6ee}
.dots{display:inline-flex;gap:5px;vertical-align:middle}.dots i{width:7px;height:7px;border-radius:50%;background:#8b93a7;animation:dot 1s infinite ease-in-out}
.dots i:nth-child(2){animation-delay:.15s}.dots i:nth-child(3){animation-delay:.3s}@keyframes dot{0%,80%,100%{opacity:.3;transform:translateY(0)}40%{opacity:1;transform:translateY(-4px)}}

/* Gestures are confined to the character; the dock retains its PTT handling. */
.avatar{touch-action:pan-y}
.av-turn{pointer-events:none;transition:opacity 120ms ease}