:root{color-scheme:light;--ink:#172033;--muted:#64748b;--line:#e2e8f0;--blue:#2563eb;--soft:#f8fafc}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--soft);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.6}.container{width:min(1120px,calc(100% - 32px));margin:auto}.site-header{background:#fff;border-bottom:1px solid var(--line);position:-webkit-sticky;position:sticky;top:0;z-index:10}.nav{height:68px;display:flex;align-items:center;justify-content:space-between}.brand{font-size:1.25rem;font-weight:800;color:var(--ink);text-decoration:none}.brand span{color:var(--blue)}.navlinks{display:flex;gap:24px}.footer a,.navlinks a{color:var(--muted);text-decoration:none}.hero{padding:72px 0 48px}.eyebrow{color:var(--blue);font-weight:700;text-transform:uppercase;letter-spacing:.08em;font-size:.75rem}h1{font-size:clamp(2.3rem,6vw,4.5rem);line-height:1.05;margin:12px 0 18px;letter-spacing:-.04em}h2{font-size:2rem;line-height:1.2;margin:0 0 14px}h3{margin:0 0 8px}.hero>p{max-width:650px;color:var(--muted);font-size:1.15rem}.chat-card{margin-top:32px;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:0 18px 55px #1e293b12;overflow:hidden}.chat-top{padding:18px 22px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between}.status{color:var(--muted);font-size:.9rem}.dot{display:inline-block;width:8px;height:8px;background:#22c55e;border-radius:50%;margin-right:7px}.messages{min-height:250px;padding:24px}.welcome{color:var(--muted);padding:45px 12px;text-align:center}.message{display:flex;margin:10px 0}.message.user{justify-content:flex-end}.bubble{max-width:78%;padding:10px 14px;border-radius:14px;background:#eef2ff;white-space:pre-wrap}.message.user .bubble{background:var(--blue);color:#fff}.composer{padding:18px;border-top:1px solid var(--line)}textarea{width:100%;min-height:82px;border:1px solid var(--line);border-radius:12px;padding:12px;font:inherit;resize:vertical}.compose-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:10px}.hint{color:var(--muted);font-size:.8rem}.button{border:0;border-radius:10px;background:var(--blue);color:#fff;padding:10px 20px;font-weight:700;cursor:pointer}.button:disabled{opacity:.5;cursor:not-allowed}.examples{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.chip{background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 11px;color:var(--muted);cursor:pointer}.section{padding:58px 0}.section-intro{color:var(--muted);max-width:700px}.grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:18px;gap:18px;margin-top:22px}.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px}.card p,.faq p{color:var(--muted);margin-bottom:0}.faq{background:#fff;border:1px solid var(--line);border-radius:14px}.faq details{padding:18px 20px;border-bottom:1px solid var(--line)}.faq details:last-child{border-bottom:0}.faq summary{font-weight:700;cursor:pointer}.footer{padding:28px 0;border-top:1px solid var(--line);color:var(--muted);font-size:.9rem}.footer-row{display:flex;justify-content:space-between;gap:16px}.footer a{margin-left:16px}@media(max-width:700px){.navlinks{gap:10px;font-size:.85rem}.grid{grid-template-columns:1fr}.footer-row{display:block}.footer-row span{display:block;margin:7px 0}.footer a:first-child{margin-left:0}.chat-top,.status{display:block}.status{margin-top:4px}}