.chat-fab{position:fixed;right:20px;bottom:20px;z-index:900;background:var(--accent);color:#fff;font-weight:600;font-size:var(--fs-body);padding:12px 18px;border-radius:999px;box-shadow:0 8px 24px rgba(0,0,0,.35);transition:transform .2s var(--ease),filter .2s var(--ease)}.chat-fab:hover{transform:translateY(-2px);filter:brightness(1.08)}.chat-fab[hidden]{display:none}.chat-panel{position:fixed;right:20px;bottom:20px;z-index:901;width:min(400px,calc(100vw - 32px));height:min(560px,calc(100vh - 40px));background:var(--surface);border:1px solid var(--border-strong);border-radius:12px;box-shadow:0 16px 48px rgba(0,0,0,.45);display:flex;flex-direction:column;overflow:hidden}.chat-panel[hidden]{display:none}.chat-head{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:12px 14px;border-bottom:1px solid var(--border)}.chat-title{font-weight:600;font-size:var(--fs-head)}.chat-sub{font-size:var(--fs-meta);color:var(--muted);margin-top:2px}.chat-close{color:var(--muted);font-size:20px;line-height:1;padding:4px 8px;border-radius:var(--r-ctl)}.chat-close:hover{color:var(--text);background:var(--elevated)}.chat-log{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:10px}.chat-msg{max-width:88%;padding:9px 12px;border-radius:10px;font-size:var(--fs-body);line-height:1.45;white-space:pre-wrap;overflow-wrap:anywhere}.chat-msg.user{align-self:flex-end;background:var(--accent);color:#fff}.chat-msg.bot{align-self:flex-start;background:var(--elevated);color:var(--text)}.chat-msg.err{align-self:stretch;max-width:none;background:var(--danger-dim);color:var(--danger);border:1px solid rgba(229,72,77,.4)}.chat-msg.wait{color:var(--muted);font-style:italic}.chat-hint{font-size:var(--fs-meta);color:var(--muted);line-height:1.5}.chat-form{display:flex;gap:8px;padding:10px;border-top:1px solid var(--border)}.chat-form textarea{flex:1;min-width:0;resize:none;height:42px;max-height:120px;background:var(--elevated);border:1px solid var(--border);border-radius:var(--r-ctl);color:var(--text);padding:10px 12px;font-family:inherit;font-size:var(--fs-body)}.chat-form textarea:focus{outline:none;border-color:var(--accent)}.chat-foot{font-size:var(--fs-meta);color:var(--muted);padding:0 12px 10px}@media (max-width:600px){.chat-fab{right:16px;bottom:16px}.chat-panel{right:0;bottom:0;width:100vw;height:100dvh;border-radius:0;border:0}}.chat-cards{display:flex;flex-direction:column;gap:6px;align-self:stretch}.chat-card{background:var(--bg);border:1px solid var(--border-strong);border-radius:var(--r-ctl);padding:8px 10px;font-size:var(--fs-body)}.chat-card-name{font-weight:600}.chat-card-sub{font-size:var(--fs-meta);color:var(--muted);margin-top:2px}.chat-card-line{display:block;color:var(--accent);margin-top:3px;text-decoration:none;overflow-wrap:anywhere}.chat-card-line:hover{text-decoration:underline}