.ech-fab{position:fixed;left:12px;bottom:140px;z-index:60;background:linear-gradient(180deg,#5a3e28,#3a2818);color:#f0e0c0;border:2px solid #b8893a;border-radius:14px;padding:8px 12px;font:700 14px/1.1 Georgia,serif;box-shadow:0 3px 0 #2a180c}
.ech{position:fixed;left:12px;bottom:186px;z-index:61;width:min(340px,calc(100vw - 24px));max-height:60vh;display:flex;flex-direction:column;background:#1e160f;color:#efe4cc;border:2px solid #b8893a;border-radius:14px;box-shadow:0 8px 24px rgba(0,0,0,.5);font:14px/1.35 Georgia,serif}
.ech[hidden]{display:none}.ech-head{display:flex;justify-content:space-between;align-items:center;padding:8px 10px;border-bottom:1px solid #4a3620}
.ech-x{background:none;border:0;color:#efe4cc;font-size:20px}.ech-tabs{display:flex;gap:6px;padding:6px 10px 0}.ech-tabs:empty{display:none}
.ech-tab{flex:1;background:#2c2014;color:#d8c8a8;border:1px solid #6a5030;border-radius:8px;padding:5px;font:600 12px Georgia,serif}.ech-tab.on{background:#b08a3c;color:#fff}
.ech-who{padding:4px 10px;font-size:11px;color:#b8a888}.ech-list{flex:1;overflow:auto;padding:4px 10px;min-height:120px}
.ech-msg{padding:3px 0;word-wrap:break-word}.ech-msg.mine b{color:#e8c070}.ech-rep{background:none;border:0;color:#887;cursor:pointer;font-size:11px}
.ech-note{margin:0 10px;font-size:12px;color:#e0a070}.ech-note:empty{display:none}.ech-form{display:flex;gap:6px;padding:8px 10px}.ech-form[hidden]{display:none}
.ech-in{flex:1;background:#14110d;color:#efe4cc;border:1px solid #8a6a2c;border-radius:8px;padding:6px}.ech-go{background:#b08a3c;color:#fff;border:0;border-radius:8px;padding:6px 12px}