#sto-assistant{font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:13px;color:#222}
#sto-assistant *{box-sizing:border-box}
.sa-fab{position:fixed;right:22px;bottom:22px;z-index:9000;background:#2c6fb7;color:#fff;border:0;border-radius:28px;padding:12px 18px;font-size:14px;font-weight:600;box-shadow:0 4px 14px rgba(0,0,0,.25);cursor:pointer}
.sa-fab:hover{background:#245c98}
.sa-panel{position:fixed;right:22px;bottom:22px;z-index:9001;width:460px;max-width:calc(100vw - 30px);height:640px;max-height:calc(100vh - 40px);background:#fff;border-radius:12px;box-shadow:0 10px 40px rgba(0,0,0,.3);display:none;flex-direction:column;overflow:hidden}
.sa-panel.sa-open{display:flex}
.sa-head{background:#2c6fb7;color:#fff;padding:10px 14px;display:flex;align-items:center;gap:8px}
.sa-head b{flex:1;font-size:14px}
.sa-head button{background:transparent;border:1px solid rgba(255,255,255,.5);color:#fff;border-radius:6px;padding:3px 8px;cursor:pointer;font-size:12px}
.sa-head button:hover{background:rgba(255,255,255,.15)}
.sa-body{flex:1;overflow-y:auto;padding:12px;background:#f4f6f9;display:flex;flex-direction:column;gap:10px}
.sa-msg{max-width:92%;padding:9px 12px;border-radius:10px;line-height:1.45;white-space:normal;word-wrap:break-word}
.sa-msg.sa-user{align-self:flex-end;background:#2c6fb7;color:#fff;border-bottom-right-radius:3px}
.sa-msg.sa-assistant{align-self:flex-start;background:#fff;border:1px solid #dde3ea;border-bottom-left-radius:3px}
.sa-msg.sa-status{align-self:flex-start;color:#58677a;font-style:italic;background:#e9eef5;border-radius:6px;padding:3px 10px;font-size:12px}
.sa-msg.sa-error{align-self:stretch;background:#fdecea;color:#a12622;border:1px solid #f5c2c0}
.sa-msg table{border-collapse:collapse;margin:6px 0;font-size:12px;width:100%}
.sa-msg th,.sa-msg td{border:1px solid #d5dbe3;padding:3px 6px;text-align:left;vertical-align:top}
.sa-msg th{background:#eef2f7}
.sa-msg code{background:#eef2f7;padding:0 3px;border-radius:3px}
.sa-msg a.sa-ref{color:#1f5fa8;font-weight:600;text-decoration:underline dotted}
.sa-msg ul,.sa-msg ol{margin:4px 0 4px 18px;padding:0}
.sa-msg p{margin:0 0 6px}
.sa-msg p:last-child{margin:0}
.sa-files{font-size:11px;opacity:.85;margin-top:4px}
.sa-prop{align-self:stretch;background:#fff8e6;border:1px solid #f1d58a;border-radius:10px;padding:10px 12px}
.sa-prop h5{margin:0 0 6px;font-size:13px;color:#8a6100}
.sa-prop .sa-prop-sum{margin-bottom:8px}
.sa-prop table{font-size:11px;border-collapse:collapse}
.sa-prop th,.sa-prop td{padding:2px 8px 2px 0;text-align:left;vertical-align:top}
.sa-prop .sa-num{text-align:right;white-space:nowrap}
.sa-prop-actions{display:flex;gap:8px;margin-top:8px}
.sa-prop-actions button{border:0;border-radius:6px;padding:6px 12px;cursor:pointer;font-weight:600}
.sa-prop-actions .sa-ok{background:#2e8b57;color:#fff}
.sa-prop-actions .sa-no{background:#e6e9ee;color:#333}
.sa-prop.sa-applied{background:#eaf7ee;border-color:#9fd3b0}
.sa-prop.sa-rejected{background:#f1f1f1;border-color:#ccc;color:#777}
.sa-prop.sa-failed{background:#fdecea;border-color:#f5c2c0}
.sa-prop .sa-prop-state{font-size:11px;font-weight:600;margin-top:6px}
.sa-foot{border-top:1px solid #dde3ea;padding:10px;background:#fff}
.sa-foot.sa-drag{background:#e8f1fb}
.sa-row{display:flex;gap:8px;align-items:flex-end}
.sa-row textarea{flex:1;resize:none;border:1px solid #cfd6df;border-radius:8px;padding:8px;font:inherit;min-height:40px;max-height:120px}
.sa-row button{background:#2c6fb7;color:#fff;border:0;border-radius:8px;padding:9px 14px;cursor:pointer;font-weight:600}
.sa-row button:disabled{opacity:.5;cursor:default}
.sa-attach{font-size:11px;color:#555;margin-top:6px;display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.sa-attach label{cursor:pointer;color:#2c6fb7;text-decoration:underline}
.sa-attach .sa-chip{background:#eef2f7;border-radius:10px;padding:2px 8px}
.sa-attach .sa-chip a{color:#a12622;margin-left:4px;cursor:pointer;text-decoration:none}
.sa-typing::after{content:"…";animation:sa-blink 1s infinite}
@keyframes sa-blink{50%{opacity:.2}}