:root{--bg: #f5f7fb;--panel: #ffffff;--ink: #1f2937;--muted: #6b7280;--primary: #2563eb;--primary-dark: #1d4ed8;--border: #e2e8f0;--warning-bg: #fff3cd;--warning-border: #f5c06a;--warning-ink: #7a4a00}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--bg);color:var(--ink);font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}.page{max-width:860px;margin:0 auto;padding:32px 20px 140px}.hero h1{margin:0 0 8px}.hero p{margin:4px 0}code{background:#eef2ff;color:#3730a3;padding:2px 6px;border-radius:6px}.warning{background:var(--warning-bg);border:1px solid var(--warning-border);color:var(--warning-ink);padding:12px 14px;border-radius:8px;font-weight:600;margin-bottom:16px}.hidden{display:none}.widget{position:fixed;right:24px;bottom:24px;z-index:10;display:flex;flex-direction:column;align-items:flex-end;gap:12px}.widget-button{width:56px;height:56px;border-radius:50%;border:none;background:var(--primary);color:#fff;font-size:24px;box-shadow:0 10px 20px #2563eb4d;cursor:pointer}.widget-button:hover{background:var(--primary-dark)}.widget-panel{width:320px;max-height:440px;background:var(--panel);border:1px solid var(--border);border-radius:14px;box-shadow:0 20px 50px #0f172a33;display:flex;flex-direction:column;overflow:hidden}.widget-header{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;background:#f1f5f9;border-bottom:1px solid var(--border);font-weight:700}.widget-close{border:none;background:transparent;font-size:18px;cursor:pointer}.message-list{padding:12px;overflow-y:auto;flex:1;display:flex;flex-direction:column;gap:10px;background:#f8fafc}.chat-message{padding:10px 12px;border-radius:12px;max-width:90%;font-size:14px;line-height:1.4}.chat-message.user{align-self:flex-end;background:#dbeafe;color:#1e3a8a}.chat-message.bot{align-self:flex-start;background:#fff;border:1px solid var(--border);color:#111827}.sources{margin-top:8px;font-size:12px;color:var(--muted);display:grid;gap:2px}.status{min-height:18px;padding:0 12px 8px;font-size:12px;color:#b91c1c}.status.ok{color:#166534}.chat-form{display:flex;gap:8px;padding:12px;border-top:1px solid var(--border);background:#fff}.chat-form input{flex:1;border:1px solid #cbd5f5;border-radius:999px;padding:8px 12px;font-size:14px}.chat-form button{border:none;background:var(--primary);color:#fff;border-radius:999px;padding:8px 14px;cursor:pointer;font-weight:600}.chat-form button:disabled{opacity:.7;cursor:default}@media (max-width: 520px){.widget-panel{width:calc(100vw - 32px)}}