.assist-fab{position:fixed;bottom:104px;right:18px;width:54px;height:54px;border-radius:17px;background:linear-gradient(145deg,#2d70b7,#12203a);color:#fff;border:1px solid rgba(255,255,255,.28);cursor:pointer;box-shadow:0 10px 24px rgba(18,32,58,.28),0 0 0 5px rgba(29,78,137,.1);z-index:110;display:grid;place-items:center;transition:transform .2s,box-shadow .2s}
.assist-fab:before{content:"";position:absolute;inset:-5px;border:1px solid rgba(62,143,213,.28);border-radius:20px;animation:assist-pulse 2.8s ease-out infinite}
.assist-fab:hover{transform:translateY(-3px) scale(1.03);box-shadow:0 14px 28px rgba(18,32,58,.32),0 0 0 6px rgba(29,78,137,.13)}
.assist-fab:focus-visible{outline:3px solid #8fc6ee;outline-offset:3px}
.assist-fab svg{position:relative;z-index:1;width:25px;height:25px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.assist-online-dot{position:absolute;right:6px;top:6px;width:9px;height:9px;border:2px solid #173356;border-radius:50%;background:#6ee0a5;z-index:2}
@keyframes assist-pulse{0%,55%{opacity:0;transform:scale(.9)}20%{opacity:1}75%,100%{opacity:0;transform:scale(1.08)}}

.assist-panel{position:fixed;bottom:154px;right:16px;width:min(240px,calc(100vw - 32px));background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:0 14px 34px rgba(18,32,58,.18);padding:8px;z-index:80;display:none}
.assist-panel.open{display:block}
.assist-panel-title{display:flex;align-items:center;gap:7px;font-size:13px;color:var(--muted);padding:8px 10px 4px}
.assist-panel-title-icon{display:grid;place-items:center;width:22px;height:22px;border-radius:7px;background:#e7f0f8;color:var(--accent);font-size:12px}
.assist-item{display:flex;align-items:center;gap:10px;padding:10px;border-radius:8px;text-decoration:none;color:var(--ink);font-size:14px}
.assist-item:hover{background:var(--bg)}
.assist-item-icon{width:26px;text-align:center;font-size:16px}

@media (max-width:480px){
  .assist-fab{bottom:92px;right:12px;width:50px;height:50px;border-radius:15px}
  .assist-panel{bottom:142px;right:12px}
}