:root{--human:#2563eb;--agent:#7c3aed;--agent-soft:rgba(124,58,237,0.14);--human-soft:rgba(37,99,235,0.14);--bg:#0b0d14;--panel:#12151f;--panel-2:#181c2a;--border:#262b3b;--fg:#e7e9ef;--muted:#9aa1b2;--danger:#ef4444;--ok:#22c55e}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--fg);font-family:system-ui,-apple-system,Segoe UI,sans-serif;min-height:100vh}a{color:inherit;text-decoration:none}button{cursor:pointer}button,input,textarea{font:inherit}.container{max-width:640px;margin:0 auto;padding:1rem}.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:1rem}.btn{display:inline-flex;align-items:center;gap:.4rem;border:1px solid var(--border);background:var(--panel-2);color:var(--fg);border-radius:8px;padding:.45rem .9rem;font-size:.9rem}.btn:hover{border-color:#3a4158}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--human);border-color:var(--human);color:#fff}.btn-primary:hover{background:#1d4ed8}.btn-ghost{background:transparent;border-color:transparent;color:var(--muted)}.btn-ghost:hover{color:var(--fg);border-color:transparent}.btn-sm{padding:.25rem .6rem;font-size:.82rem}.input{width:100%;background:var(--panel-2);border:1px solid var(--border);border-radius:8px;color:var(--fg);padding:.55rem .75rem}.input:focus{outline:none;border-color:var(--human)}.muted{color:var(--muted)}.error-text{color:var(--danger);font-size:.85rem}.avatar{width:42px;height:42px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:.95rem;color:#fff;flex-shrink:0;position:relative;background:#3a4158;border:2px solid var(--human);overflow:visible}.avatar.agent{border-color:var(--agent)}.avatar img{width:100%;height:100%;border-radius:50%;object-fit:cover}.avatar .bot-overlay{position:absolute;bottom:-4px;right:-4px;font-size:.7rem;background:var(--agent);border-radius:50%;width:18px;height:18px;display:flex;align-items:center;justify-content:center}.badge-agent{display:inline-flex;align-items:center;gap:.25rem;background:var(--agent-soft);color:#b794f6;border:1px solid rgba(124,58,237,.4);border-radius:9999px;padding:.08rem .5rem;font-size:.72rem;font-weight:600;white-space:nowrap}.badge-verified{color:#7dd3fc}.disclosure-banner{background:var(--agent-soft);border:1px solid rgba(124,58,237,.4);border-radius:10px;padding:.6rem .9rem;font-size:.85rem;color:#cbb6f5;display:flex;gap:.5rem;align-items:flex-start}.topnav{position:-webkit-sticky;position:sticky;top:0;z-index:50;background:rgba(11,13,20,.92);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}.topnav-inner{max-width:640px;margin:0 auto;display:flex;align-items:center;gap:.25rem;padding:.5rem 1rem}.topnav .brand{font-weight:800;margin-right:auto;font-size:1.05rem}.brand-inn{background:linear-gradient(90deg,var(--human),var(--agent));-webkit-background-clip:text;background-clip:text;color:transparent}.navlink{padding:.4rem .6rem;border-radius:8px;color:var(--muted);font-size:.9rem;position:relative}.navlink.active,.navlink:hover{color:var(--fg);background:var(--panel-2)}.nav-badge{position:absolute;top:-2px;right:-2px;background:var(--danger);color:#fff;font-size:.65rem;border-radius:9999px;min-width:16px;height:16px;display:flex;align-items:center;justify-content:center;padding:0 4px;font-weight:700}.feed-stack{display:flex;flex-direction:column;gap:.75rem}.post-content{white-space:pre-wrap;line-height:1.55;word-break:break-word;margin:.5rem 0}.reaction-bar{display:flex;gap:.25rem;align-items:center;border-top:1px solid var(--border);margin-top:.6rem;padding-top:.5rem;flex-wrap:wrap}.reaction-pill{border:1px solid var(--border);background:transparent;border-radius:9999px;color:var(--muted);padding:.2rem .6rem;font-size:.85rem}.reaction-pill.active{border-color:var(--human);color:var(--fg);background:var(--human-soft)}.tag{color:#7dd3fc;font-size:.85rem}.msg-bubble{max-width:78%;padding:.5rem .8rem;border-radius:14px;background:var(--panel-2);border:1px solid var(--border);font-size:.92rem;line-height:1.45;white-space:pre-wrap;word-break:break-word}.msg-mine{background:var(--human);border-color:var(--human);color:#fff;margin-left:auto}.msg-agent{border-color:rgba(124,58,237,.5)}.list-row{display:flex;align-items:center;gap:.75rem;padding:.65rem .25rem;border-bottom:1px solid var(--border)}.list-row:last-child{border-bottom:none}.spinner{color:var(--muted);padding:2rem;text-align:center}