:root{--background:#f3f0ea;--panel:#fff;--response-bg:#faf9f7;--input-bg:#fcfbf9;--text-heading:#17141c;--text-muted:#6f6877;--border:#ded9e3;--accent:#6d3df5;--accent-soft:#6d3df524;--shadow:0 24px 70px #2b21411a, 0 3px 10px #2b21410d;--sans:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--mono:"SFMono-Regular", Consolas, "Liberation Mono", monospace;color:var(--text-heading);background:var(--background);font-family:var(--sans);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}html{min-width:320px;min-height:100%}body{background:radial-gradient(circle at top left, #6d3df51a, transparent 35%), var(--background);min-width:320px;min-height:100vh;margin:0}button,textarea{font:inherit}.page{width:min(960px,100% - 32px);margin:0 auto;padding:72px 0}.intro{max-width:720px;margin-bottom:40px}.eyebrow{color:var(--accent);font-family:var(--mono);letter-spacing:.08em;text-transform:uppercase;margin:0 0 12px;font-size:14px;font-weight:700}.intro h1{letter-spacing:-.06em;margin:0;font-size:clamp(48px,9vw,88px);line-height:.95}.intro-text{max-width:650px;color:var(--text-muted);margin-top:24px;font-size:18px;line-height:1.65}.chat-panel{border:1px solid var(--border);background:var(--panel);box-shadow:var(--shadow);border-radius:24px;overflow:hidden}.panel-header{border-bottom:1px solid var(--border);padding:28px 32px}.panel-header h2{margin:8px 0 0;font-size:24px}.status{color:var(--text-muted);font-family:var(--mono);align-items:center;gap:8px;margin:0;font-size:13px;display:flex}.status-dot{background:#36c477;border-radius:50%;width:8px;height:8px;box-shadow:0 0 0 4px #36c4771f}.chat-form{flex-direction:column;gap:12px;padding:32px;display:flex}.chat-form label{color:var(--text-heading);font-size:14px;font-weight:700}.chat-form textarea{box-sizing:border-box;resize:vertical;border:1px solid var(--border);width:100%;min-height:128px;color:var(--text-heading);background:var(--input-bg);font:inherit;border-radius:14px;outline:none;padding:18px;line-height:1.5;transition:border-color .15s,box-shadow .15s}.chat-form textarea:focus{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}.chat-form textarea:disabled{cursor:wait;opacity:.7}.form-footer{justify-content:space-between;align-items:center;gap:20px;display:flex}.hint{color:var(--text-muted);font-size:13px}button{color:#fff;background:var(--accent);font:inherit;cursor:pointer;border:0;border-radius:999px;flex-shrink:0;padding:12px 20px;font-weight:700;transition:transform .15s,opacity .15s}button:hover:not(:disabled){transform:translateY(-1px)}button:focus-visible{outline:3px solid var(--accent-soft);outline-offset:3px}button:disabled{cursor:not-allowed;opacity:.5}.error-message{color:#8f2727;background:#fff2f2;border:1px solid #e4a1a1;border-radius:12px;margin:0 32px 32px;padding:16px 18px}.response{border-top:1px solid var(--border);background:var(--response-bg);padding:32px}.response-label{color:var(--accent);font-family:var(--mono);letter-spacing:.08em;margin:0 0 12px;font-size:13px;font-weight:700}.answer{color:var(--text-heading);white-space:pre-wrap;margin:0;font-size:17px;line-height:1.75}.sources{margin-top:28px}.sources h3{margin:0 0 12px;font-size:15px}.sources ul{gap:10px;margin:0;padding:0;list-style:none;display:grid}.source-card{border:1px solid var(--border);background:var(--panel);border-radius:12px;justify-content:space-between;align-items:center;gap:16px;padding:14px 16px;display:flex}.source-card div{flex-direction:column;gap:3px;min-width:0;display:flex}.source-card strong{color:var(--text-heading);text-overflow:ellipsis;white-space:nowrap;font-size:14px;overflow:hidden}.source-card span{color:var(--text-muted);font-size:12px}.source-card .score{font-family:var(--mono);flex-shrink:0}@media (width<=640px){.page{width:min(100% - 20px,960px);padding:40px 0}.intro{margin-bottom:28px}.intro-text{font-size:16px}.panel-header,.chat-form,.response{padding:22px}.form-footer{flex-direction:column;align-items:stretch}button{width:100%}.error-message{margin:0 22px 22px}}