:root{--z4-graphite:#11171b;--z4-aqua:#00d9e9;--z4-gold:#d9b66f;--z4-red:#b92036}.z4-agent-rail{position:fixed;z-index:9999;right:18px;top:50%;transform:translateY(-50%);display:flex;flex-direction:column;gap:12px;align-items:flex-end;font-family:Inter,system-ui,sans-serif}.z4-agent-rail__toggle,.z4-agent{appearance:none;border:1px solid rgba(0,217,233,.36);background:linear-gradient(145deg,#1b252b,#070a0d);color:#fff;cursor:pointer;box-shadow:0 10px 28px rgba(0,0,0,.45)}.z4-agent-rail__toggle{width:40px;height:40px;border-radius:50%;color:var(--z4-aqua)}.z4-agent-rail__agents{display:grid;gap:10px}.z4-agent{position:relative;width:56px;height:56px;border-radius:50%;overflow:visible;padding:2px}.z4-agent img,.z4-agent__monogram{width:100%;height:100%;border-radius:50%;object-fit:cover;display:grid;place-items:center;background:linear-gradient(135deg,#30414a,#0c1014);font:600 22px Georgia;color:#dcecf0}.z4-agent__presence{position:absolute;right:0;bottom:1px;width:13px;height:13px;border:2px solid #0c1014;border-radius:50%;z-index:2;background:var(--z4-aqua);box-shadow:0 0 12px var(--z4-aqua)}.z4-agent__presence--win,.z4-agent__presence--approval{background:var(--z4-gold);box-shadow:0 0 12px var(--z4-gold)}.z4-agent__presence--risk{background:var(--z4-red);box-shadow:0 0 12px var(--z4-red)}.z4-agent-chat{width:min(390px,calc(100vw - 100px));height:500px;background:rgba(9,13,17,.97);border:1px solid rgba(0,217,233,.4);border-radius:18px;box-shadow:0 18px 50px #000;color:#eaf7f7;overflow:hidden}.z4-agent-chat header{padding:16px;border-bottom:1px solid #27343c;display:flex;justify-content:space-between}.z4-agent-chat__close{color:#fff;background:transparent;border:0;font-size:25px;cursor:pointer}.z4-agent-chat__messages{height:385px;overflow:auto;padding:16px;white-space:pre-wrap;line-height:1.45}.z4-agent-chat__form{display:flex;border-top:1px solid #27343c}.z4-agent-chat input{min-width:0;flex:1;padding:14px;background:#10171c;border:0;color:#fff}.z4-agent-chat button[type=submit]{padding:0 17px;background:var(--z4-aqua);border:0;color:#001216;font-weight:800}@media (prefers-reduced-motion:reduce){.z4-agent__presence{box-shadow:none}}