:root{--bg:#0b1530;--panel:#13214a;--line:#22346b;--tx:#eef2ff;--mut:#9fb0e0;--a:#3fd0ff;--b:#ff5fa8;--mine:#1c58d6;--other:#1a2a5c}
@media (prefers-color-scheme:light){:root{--bg:#f4f6ff;--panel:#fff;--line:#d9e0f7;--tx:#0b1530;--mut:#51608f;--mine:#2e6bff;--other:#e8ecfb}}
*{box-sizing:border-box}html,body{height:100%;margin:0}
body{background:var(--bg);color:var(--tx);font:16px/1.4 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;-webkit-text-size-adjust:100%}
#app{height:100%;display:flex;flex-direction:column;max-width:900px;margin:0 auto}
.grad{background:linear-gradient(90deg,var(--a),var(--b));-webkit-background-clip:text;background-clip:text;color:transparent}
.center{margin:auto;width:min(92vw,400px);padding:24px 0}
h1{font-size:28px;margin:0 0 4px}h2{font-size:18px;margin:0}
p.mut,.mut{color:var(--mut)}
input,button{font:inherit}
input{width:100%;padding:12px 14px;border-radius:12px;border:1px solid var(--line);background:var(--panel);color:var(--tx);margin:6px 0}
button{padding:12px 16px;border-radius:12px;border:0;background:linear-gradient(90deg,#2e6bff,#8a4dff);color:#fff;font-weight:600;cursor:pointer}
button.ghost{background:transparent;border:1px solid var(--line);color:var(--tx)}
button:disabled{opacity:.5}
.row{display:flex;gap:8px;align-items:center}.row>*{flex:0 0 auto}.row>input{flex:1}
header{display:flex;align-items:center;gap:10px;padding:calc(10px + env(safe-area-inset-top)) 16px 10px;border-bottom:1px solid var(--line);background:var(--panel)}
header .t{flex:1;min-width:0}header .t b{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.dot{width:9px;height:9px;border-radius:50%;background:#f5a524}.dot.on{background:#31d07f}
.list{flex:1;overflow:auto;padding:8px 0}
.item{padding:12px 16px;border-bottom:1px solid var(--line);cursor:pointer;display:flex;gap:12px;align-items:center}
.av{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--a),var(--b));display:grid;place-items:center;color:#06122c;font-weight:700}
.msgs{flex:1;overflow:auto;padding:12px 14px;display:flex;flex-direction:column;gap:6px}
.m{max-width:78%;padding:8px 12px;border-radius:16px;background:var(--other);word-wrap:break-word;white-space:pre-wrap}
.m.me{align-self:flex-end;background:var(--mine);color:#fff}
.m small{display:block;opacity:.65;font-size:11px;margin-top:2px;text-align:right}
form.send{display:flex;gap:8px;padding:10px 12px calc(10px + env(safe-area-inset-bottom));border-top:1px solid var(--line);background:var(--panel)}
form.send input{margin:0}
.err{color:#ff7a8a;min-height:1.2em;font-size:14px}
.banner{background:#4a3a0a;color:#ffd77a;padding:6px 16px;font-size:13px;text-align:center}
.note{font-size:12px;color:var(--mut);margin-top:16px}