:root{--ink:#102c40;--blue:#197fcd;--muted:#647a8d;--line:#d7e7f3;--shadow:0 20px 48px rgba(30,82,129,.085)}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink)}body{background:radial-gradient(ellipse at 5% 25%,#d8effe,transparent 45%),radial-gradient(ellipse at 85% 75%,#e1f6f0,transparent 40%),#f0f7fd}a{color:var(--blue)}.shell{max-width:1190px;padding:28px 18px 42px;margin:auto}.header{display:flex;justify-content:space-between;align-items:center;gap:18px;margin-bottom:24px}.brand{display:flex;align-items:center;gap:13px;color:var(--ink);text-decoration:none}.brand-mark{display:grid;place-items:center;width:52px;height:52px;border-radius:16px;background:#104763;color:#94e6d7}.brand-mark svg{width:38px;height:38px}.brand strong{display:block;font-size:22px;letter-spacing:-.04em}.brand small{display:block;font-size:10px;letter-spacing:.14em;color:var(--muted);font-weight:800}.back{color:#53748b;text-decoration:none;font-size:14px;font-weight:750}.back:hover{text-decoration:underline}.panel{position:relative;overflow:hidden;min-height:650px;padding:48px 52px 28px;border:1px solid #c8e2f7;border-radius:32px;background:linear-gradient(140deg,rgba(255,255,255,.96),rgba(248,253,255,.88) 60%,rgba(237,247,252,.96));box-shadow:var(--shadow)}.eyebrow{display:flex;gap:12px;align-items:center;color:var(--blue);font-size:13px;font-weight:850;letter-spacing:.14em}.eyebrow span{width:30px;height:2px;background:currentColor}.welcome{padding:34px 0 30px;max-width:940px}.welcome h1{font-size:clamp(36px,4.3vw,62px);line-height:1.1;letter-spacing:-.055em;margin:0 0 26px;font-weight:780}.welcome h1 em{font-style:normal;color:#1a79c6}.lead{max-width:760px;line-height:1.65;font-size:19px;color:#61788c;font-weight:500;margin:0}.welcome-illustration{display:flex;flex-direction:column;align-items:flex-start;gap:12px;margin:33px 0}.bubble{background:#fff;border:1px solid var(--line);border-radius:18px;padding:15px 21px;box-shadow:0 8px 20px rgba(40,90,130,.06);font-size:15px;font-weight:630;max-width:92%}.bubble.answer{margin-left:65px;background:#eff9ff;border-color:#c8e7f9;color:#315c76}.beacon{color:#2081c4;margin-right:5px}.btn{border-radius:14px;border:1px solid transparent;padding:14px 20px;font-family:inherit;font-size:15px;font-weight:780;cursor:pointer}.btn-primary{background:#176baf;color:#fff;box-shadow:0 5px 15px rgba(32,115,180,.12)}.btn-primary:hover:not(:disabled){background:#0f578e}.btn:disabled{cursor:not-allowed;opacity:.48}.btn-light{background:#e8f3fa;color:#245875;border-color:#cce0ee}.intro-hint{margin-top:13px;color:#8193a1;font-size:13px}.panel footer{display:flex;gap:12px;flex-wrap:wrap;justify-content:space-between;margin-top:28px;padding-top:18px;border-top:1px solid var(--line);color:#91a2af;font-size:12px}.hidden{display:none!important}.chat{padding-top:24px}.chat-header{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}.chat-header h1{margin:0;font-size:30px;letter-spacing:-.045em}.chat-header p{margin:6px 0 0;color:var(--muted);font-size:14px}.status-dot{border-radius:100px;background:#e3f5ec;color:#15784f;padding:8px 13px;font-size:12px;font-weight:780;white-space:nowrap}.status-dot.off{background:#f2f4f6;color:#687c8c}.session-bar{display:flex;gap:17px;flex-wrap:wrap;margin:20px 0;padding:11px 15px;border:1px solid var(--line);border-radius:12px;color:#567286;font-size:12px;background:#f3faff}.session-bar strong{font-weight:700;color:#234863}.messages{display:flex;flex-direction:column;gap:15px;height:min(45vh,400px);min-height:270px;overflow-y:auto;padding:16px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.6)}.message{max-width:88%;padding:12px 17px;border-radius:17px;font-size:14px;line-height:1.55;white-space:pre-wrap;overflow-wrap:anywhere}.message.user{align-self:flex-end;background:#e3f2fc;color:#214a65}.message.assistant{align-self:flex-start;background:#fff;border:1px solid var(--line)}.message small{display:block;opacity:.65;font-weight:800;font-size:10px;letter-spacing:.08em;margin-bottom:5px}.suggestions{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.suggestions button{font:inherit;font-size:12px;cursor:pointer;border:1px solid var(--line);background:#f9fdff;border-radius:100px;padding:7px 12px;color:#507083}.composer{display:flex;align-items:flex-end;gap:10px;margin-top:12px}.composer textarea{min-width:0;flex:1;resize:vertical;max-height:120px;border:1px solid #c9dfec;background:white;border-radius:15px;padding:13px 16px;font:inherit;font-size:14px;line-height:1.5;color:var(--ink)}.composer textarea:focus,.extend input:focus{outline:2px solid #99c9ee;outline-offset:1px}.hint{font-size:13px;color:var(--muted);margin-top:9px}.blocked{margin-top:14px;border:1px solid #d4e2ed;border-radius:16px;padding:16px;background:#f4f9fc}.blocked strong{font-size:15px}.blocked p{font-size:13px;line-height:1.55;color:#637d8e;margin:6px 0 13px}.extend{display:flex;gap:8px;flex-wrap:wrap}.extend input{border-radius:11px;border:1px solid #ccdfea;padding:11px;font:inherit;flex:1;min-width:200px}.notice{margin-top:10px;font-size:13px;color:#b54d51;min-height:18px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
@media(max-width:700px){.shell{padding:12px 10px}.panel{min-height:0;border-radius:22px;padding:24px 19px 19px}.brand strong{font-size:19px}.brand-mark{height:43px;width:43px}.back{font-size:12px}.welcome{padding-top:25px}.welcome h1{font-size:35px}.lead{font-size:16px}.bubble{font-size:13px}.bubble.answer{margin-left:20px}.chat-header{flex-direction:column}.chat-header h1{font-size:25px}.session-bar{gap:10px}.messages{height:42vh}.message{max-width:95%}.composer{align-items:stretch}.composer button{padding:9px 13px;font-size:12px}.panel footer{font-size:11px}}