:root{--brand: #177ec1;--brand-dark: #12679f;--brand-soft: #e6f1f9;--bg: #f3f4f6;--surface: #ffffff;--ink: #1f2933;--muted: #6b7280;--line: #e3e6ea;--danger: #d64541;--radius: 18px;--shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08)}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body,#root{height:100%;margin:0}body{font:16px/1.5 Roboto,system-ui,-apple-system,Segoe UI,Helvetica Neue,Arial,sans-serif;color:var(--ink);background:var(--bg);overscroll-behavior:none}button{font:inherit}.app{display:flex;flex-direction:column;height:100dvh;max-width:720px;margin:0 auto;background:var(--bg);position:relative;overflow:hidden}.topbar{background:var(--brand);color:#fff;padding-top:env(safe-area-inset-top);flex:none}.topbar-row{height:56px;display:flex;align-items:center;justify-content:space-between;padding:0 6px}.topbar-title{height:44px;display:grid;place-items:center;border-top:1px solid rgba(255,255,255,.35);font-weight:700;font-size:15px;letter-spacing:.3px;text-transform:uppercase;padding:0 16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.icon-btn{width:44px;height:44px;border:0;border-radius:12px;background:transparent;color:inherit;display:grid;place-items:center;cursor:pointer}.icon-btn:active{background:#ffffff26}.icon-btn:disabled{opacity:.45}.logo{display:inline-flex;align-items:center;font-weight:800;font-size:27px;letter-spacing:-1px;color:#fff;line-height:1;-webkit-user-select:none;user-select:none}.logo-on{display:inline-grid;place-items:center;margin-left:1px;background:#fff;color:var(--brand);border-radius:999px;padding:2px 6px 4px;font-size:24px}.content{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;position:relative}.center{height:100%;display:grid;place-items:center}.loading{display:flex;flex-direction:column;align-items:center;gap:12px;color:var(--muted);font-size:13px}.bubble .loading{flex-direction:row;gap:10px}.spinner{width:26px;height:26px;border-radius:50%;border:3px solid rgba(23,126,193,.18);border-top-color:var(--brand);animation:spin .9s linear infinite}.bubble .spinner{width:18px;height:18px;border-width:2.5px}@keyframes spin{to{transform:rotate(360deg)}}.welcome{padding:32px 20px 24px;text-align:center;color:var(--muted)}.welcome-icon{width:56px;height:56px;margin:0 auto 14px;border-radius:18px;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center}.welcome h2{color:var(--ink);font-size:20px;margin:0 0 6px}.welcome p{margin:0 auto;max-width:340px;font-size:14.5px}.suggestions{display:grid;gap:10px;margin:24px auto 0;max-width:420px}.suggestions button{text-align:left;font-size:15px;color:var(--ink);cursor:pointer;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:13px 14px;box-shadow:var(--shadow)}.suggestions button:active{background:var(--brand-soft);border-color:var(--brand)}.messages{padding:16px 12px 8px}.row{display:flex;margin-bottom:12px}.row-user{justify-content:flex-end}.bubble{max-width:86%;padding:10px 14px;border-radius:var(--radius);overflow-wrap:anywhere}.bubble.user{background:var(--brand);color:#fff;border-bottom-right-radius:6px;white-space:pre-wrap}.bubble.bot{background:var(--surface);box-shadow:var(--shadow);border-bottom-left-radius:6px}.bubble.bot p{margin:0 0 8px}.bubble.bot p:last-of-type{margin-bottom:0}.bubble.bot .md-h{font-weight:700;color:var(--brand-dark)}.bubble.bot ul,.bubble.bot ol{margin:4px 0 8px;padding-left:20px}.bubble.bot li{margin:2px 0}.bubble.bot strong{color:#0f172a}.bubble.error{color:var(--danger)}.caret{display:inline-block;width:7px;height:15px;margin-left:2px;background:var(--brand);vertical-align:-2px;animation:blink 1s steps(2) infinite}@keyframes blink{50%{opacity:0}}.retry{margin-top:8px;display:inline-flex;align-items:center;gap:6px;cursor:pointer;border:1px solid currentColor;background:transparent;color:var(--brand);border-radius:999px;padding:5px 12px;font-size:14px}.sources{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-top:10px;padding-top:9px;border-top:1px solid var(--line)}.sources-label{font-size:11px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.5px;margin-right:2px}.chip{display:inline-flex;align-items:center;gap:4px;font-size:12.5px;line-height:1.3;background:var(--brand-soft);color:var(--brand-dark);padding:4px 9px;border-radius:999px}.banner{position:sticky;bottom:8px;margin:8px 12px;padding:9px 12px;border-radius:10px;background:#fff4e5;color:#8a5300;font-size:14px;text-align:center}.composer{flex:none;background:var(--surface);border-top:1px solid var(--line);padding:8px 10px calc(8px + env(safe-area-inset-bottom))}.rec-banner{display:flex;align-items:center;gap:8px;color:var(--danger);font-size:13px;padding:0 6px 7px}.rec-banner i{width:9px;height:9px;border-radius:50%;background:var(--danger);animation:blink 1s infinite}.composer-row{display:flex;align-items:flex-end;gap:8px}.composer textarea{flex:1;min-width:0;resize:none;outline:none;font:inherit;font-size:16px;line-height:1.35;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:23px;padding:11px 16px;max-height:132px}.composer textarea:focus{border-color:var(--brand);background:#fff}.round{width:46px;height:46px;flex:none;border-radius:50%;border:0;display:grid;place-items:center;cursor:pointer}.round.mic{background:var(--brand-soft);color:var(--brand)}.round.mic.recording{background:var(--danger);color:#fff;animation:ring 1.4s infinite}.round.send{background:var(--brand);color:#fff}.round:disabled{opacity:.4;cursor:default}@keyframes ring{0%{box-shadow:0 0 #d6454173}to{box-shadow:0 0 0 14px #d6454100}}.drawer{position:absolute;inset:0;pointer-events:none;z-index:20}.drawer-backdrop{position:absolute;inset:0;background:#0f172a66;opacity:0;transition:opacity .2s}.drawer-panel{position:absolute;top:0;bottom:0;left:0;width:min(84%,320px);background:var(--surface);transform:translate(-100%);transition:transform .25s ease;overflow-y:auto;padding-bottom:calc(16px + env(safe-area-inset-bottom))}.drawer.open{pointer-events:auto}.drawer.open .drawer-backdrop{opacity:1}.drawer.open .drawer-panel{transform:none}.drawer-head{background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:space-between;padding:calc(10px + env(safe-area-inset-top)) 8px 10px 16px}.drawer-item{width:100%;display:flex;align-items:center;gap:12px;padding:15px 16px;cursor:pointer;border:0;border-bottom:1px solid var(--line);background:none;color:var(--ink);font-weight:600;text-align:left}.drawer-item svg{color:var(--brand)}.drawer-section{padding:18px 16px 6px;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:var(--muted)}.drawer-note{padding:0 16px;color:var(--muted);font-size:14px}.doc-item{display:flex;gap:12px;padding:10px 16px;align-items:flex-start}.doc-item svg{color:var(--brand);flex:none;margin-top:2px}.doc-title{font-size:14.5px;font-weight:600;line-height:1.3}.doc-meta{font-size:12.5px;color:var(--muted)}.drawer-tips{margin:0;padding:0 16px 0 34px;font-size:14px;color:var(--muted)}.drawer-tips li{margin-bottom:6px}.toast{position:absolute;left:50%;bottom:calc(84px + env(safe-area-inset-bottom));transform:translate(-50%,8px);max-width:calc(100% - 32px);background:#1f2933;color:#fff;font-size:14px;padding:10px 14px;border-radius:10px;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:30}.toast.show{opacity:.96;transform:translate(-50%)}@media(min-width:721px){.app{box-shadow:0 0 0 1px var(--line)}}.topbar-row-center{justify-content:center}.login-content{padding:24px 16px calc(24px + env(safe-area-inset-bottom))}.login-card{background:var(--surface);border-radius:16px;box-shadow:var(--shadow);padding:22px 18px;max-width:420px;margin:0 auto}.login-card h1{font-size:20px;margin:0 0 16px}.login-card label{display:block;font-size:13.5px;font-weight:600;color:var(--muted);margin:14px 0 6px}.login-card input{width:100%;font:inherit;font-size:16px;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:12px 14px;outline:none}.login-card input:focus{border-color:var(--brand);background:#fff}.pass-wrap{position:relative}.pass-wrap input{padding-right:84px}.pass-toggle{position:absolute;right:6px;top:50%;transform:translateY(-50%);border:0;background:none;color:var(--brand);font-size:14px;font-weight:600;padding:8px;cursor:pointer}.login-error{color:var(--danger);font-size:14px;margin:12px 0 0}.login-alert{background:#fff4e5;color:#8a5300;border-radius:10px;padding:10px 12px;font-size:14px;margin:0 0 8px}.login-hint{color:var(--muted);font-size:13.5px;text-align:center;margin:14px 0 0}.btn-primary,.btn-secondary{width:100%;height:48px;margin-top:20px;border-radius:12px;font-weight:700;font-size:16px;display:grid;place-items:center;cursor:pointer;text-decoration:none}.btn-primary{border:0;background:var(--brand);color:#fff}.btn-primary:disabled{opacity:.5;cursor:default}.btn-secondary{border:1.5px solid var(--brand);background:#fff;color:var(--brand)}.spinner-white{border-color:#ffffff59;border-top-color:#fff;width:22px;height:22px}.error-box{text-align:center;color:var(--muted);padding:0 24px}.error-box .btn-primary{max-width:240px;margin:12px auto 0}.page-strip{margin-top:12px}.page-thumbs{display:flex;gap:8px;overflow-x:auto;padding:6px 0 2px;scrollbar-width:none}.page-thumbs::-webkit-scrollbar{display:none}.page-thumb{flex:none;width:84px;padding:0;border:1px solid var(--line);border-radius:10px;background:var(--bg);overflow:hidden;cursor:pointer;display:flex;flex-direction:column}.page-thumb img{width:100%;height:112px;object-fit:cover;object-position:top;display:block;background:#fff}.page-thumb span{font-size:11.5px;font-weight:600;color:var(--brand-dark);padding:4px 2px;text-align:center}.page-thumb:active{border-color:var(--brand)}.viewer{position:fixed;inset:0;z-index:40;background:#0e1116;display:flex;flex-direction:column;color:#fff}.viewer-bar{display:flex;align-items:center;gap:4px;padding:calc(6px + env(safe-area-inset-top)) 6px 6px 14px;background:#0e1116eb}.viewer-title{flex:1;min-width:0;display:flex;flex-direction:column;line-height:1.25}.viewer-title strong{font-size:15px;text-transform:capitalize}.viewer-title span{font-size:12.5px;opacity:.7;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.viewer-stage{flex:1;overflow:auto;-webkit-overflow-scrolling:touch;touch-action:pan-x pan-y pinch-zoom;display:flex}.viewer-stage img{margin:auto;max-width:100%;max-height:100%;object-fit:contain;-webkit-user-select:none;user-select:none}.viewer-stage.zoomed{display:block}.viewer-stage.zoomed img{max-width:none;max-height:none;width:250%}.viewer-nav{display:flex;align-items:center;justify-content:center;gap:18px;font-size:14px;padding:8px 0 calc(10px + env(safe-area-inset-bottom));background:#0e1116eb}.viewer-nav button{width:44px;height:44px;border-radius:50%;border:0;background:#ffffff1f;color:#fff;font-size:26px;line-height:1;cursor:pointer}.viewer-nav button:disabled{opacity:.3}.drawer-user{display:flex;align-items:center;gap:12px;padding:14px 16px;border-bottom:1px solid var(--line)}.avatar{width:38px;height:38px;border-radius:50%;flex:none;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);font-weight:700}.drawer-logout{margin-top:16px;border-top:1px solid var(--line);color:var(--danger)}.drawer-logout svg{color:var(--danger)}