:root{color-scheme:light;--ink:#10213a;--muted:#66758b;--blue:#3766e8;--blue-dark:#254dbd;--pale:#eef3ff;--line:#e2e8f1;--paper:#fff;--canvas:#f5f7fb;--green:#2c9c74;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--canvas);color:var(--ink);font-size:16px;line-height:1.6}.topbar,main,footer{width:min(1120px,calc(100% - 48px));margin-inline:auto}.topbar{height:78px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-size:18px;font-weight:760;letter-spacing:.04em;text-decoration:none}.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:11px;background:var(--blue);color:#fff;font-size:18px}.top-link,.back-top{color:var(--blue-dark);font-size:14px;font-weight:650;text-decoration:none}.hero{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(270px,.7fr);gap:80px;align-items:center;padding:78px 0 88px}.eyebrow{display:flex;align-items:center;gap:9px;margin:0 0 16px;color:var(--blue-dark);font-size:12px;font-weight:750;letter-spacing:.11em;text-transform:uppercase}.status-dot{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px #e5f5ef}.hero h1{margin:0;font-size:clamp(40px,6vw,68px);line-height:1.08;letter-spacing:-.045em}.hero h1 span{color:var(--blue)}.intro{max-width:610px;margin:24px 0 30px;color:var(--muted);font-size:17px}.button{display:inline-flex;align-items:center;gap:18px;padding:13px 19px;border-radius:10px;background:var(--blue);color:#fff;font-weight:680;text-decoration:none;box-shadow:0 8px 22px #3766e82e;transition:background .18s,transform .18s}.button:hover{background:var(--blue-dark);transform:translateY(-1px)}.hero-note{padding:25px;border:1px solid var(--line);border-radius:16px;background:var(--paper);box-shadow:0 14px 44px #263b6110}.note-icon{display:grid;place-items:center;width:34px;height:34px;margin-bottom:13px;border-radius:10px;background:#e6f6ef;color:var(--green);font-weight:800}.note-title{margin:0 0 4px;font-weight:720}.hero-note p:not(.note-title):not(.note-label):not(.note-value){margin:0;color:var(--muted);font-size:14px}.note-divider{height:1px;margin:21px 0;background:var(--line)}.note-label{margin:0;color:var(--muted);font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.note-value{margin:5px 0 0;font-size:13px;font-weight:650}.demo-section{padding:40px 0 84px;border-top:1px solid var(--line)}.section-heading{display:flex;align-items:end;justify-content:space-between;margin-bottom:22px}.section-heading .eyebrow{margin-bottom:5px}.section-heading h2{margin:0;font-size:32px;letter-spacing:-.03em}.demo-badge{display:flex;align-items:center;gap:9px;margin-bottom:8px;color:var(--muted);font-size:12px}.chat-card{max-width:790px;margin-inline:auto;overflow:hidden;border:1px solid var(--line);border-radius:18px;background:var(--paper);box-shadow:0 18px 60px #233c6710}.chat-head{display:flex;align-items:center;gap:12px;padding:18px 20px;border-bottom:1px solid var(--line)}.avatar{display:grid;place-items:center;width:42px;height:42px;border-radius:14px;background:var(--pale);color:var(--blue);font-weight:800}.chat-head strong,.chat-head span{display:block}.chat-head strong{font-size:14px;line-height:1.2}.chat-head span{color:var(--muted);font-size:12px}.clear-button{margin-left:auto;padding:7px 10px;border:0;border-radius:8px;background:transparent;color:var(--muted);font:inherit;font-size:12px;cursor:pointer}.clear-button:hover{background:var(--canvas);color:var(--ink)}.messages{display:flex;flex-direction:column;gap:14px;min-height:210px;max-height:390px;overflow:auto;padding:22px 20px}.message{max-width:min(88%,570px);padding:11px 14px;border-radius:4px 14px 14px 14px;background:var(--canvas)}.message.user{align-self:flex-end;border-radius:14px 4px 14px 14px;background:var(--pale)}.message-label{display:block;margin-bottom:4px;color:var(--blue-dark);font-size:10px;font-weight:760;letter-spacing:.08em;text-transform:uppercase}.message p{margin:0;font-size:14px;line-height:1.55}.suggestions{display:flex;flex-wrap:wrap;gap:8px;padding:0 20px 18px}.suggestions button{padding:8px 11px;border:1px solid var(--line);border-radius:999px;background:#fff;color:#42536c;font:inherit;font-size:12px;cursor:pointer;transition:border-color .15s,color .15s}.suggestions button:hover{border-color:#9db1f1;color:var(--blue-dark)}.chat-form{display:flex;gap:10px;padding:14px 18px;border-top:1px solid var(--line)}.chat-form input{min-width:0;flex:1;padding:11px 13px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);font:inherit;font-size:14px;outline:none}.chat-form input:focus{border-color:#7d9af0;box-shadow:0 0 0 3px #3766e81c}.send-button{display:grid;place-items:center;width:44px;height:44px;border:0;border-radius:11px;background:var(--blue);color:#fff;font-size:22px;cursor:pointer}.send-button:hover{background:var(--blue-dark)}.privacy-note{margin:0;padding:0 20px 18px;color:var(--muted);font-size:11px;text-align:center}.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;padding:30px 0 78px;border-top:1px solid var(--line)}.principles article{padding:12px 0}.principle-number{color:var(--blue);font-size:12px;font-weight:750;letter-spacing:.1em}.principles h3{margin:8px 0 5px;font-size:16px}.principles p{max-width:300px;margin:0;color:var(--muted);font-size:13px}footer{display:flex;align-items:center;gap:22px;min-height:84px;border-top:1px solid var(--line);color:var(--muted);font-size:11px}.footer-brand{font-size:14px} .footer-brand .brand-mark{width:28px;height:28px;border-radius:9px;font-size:14px}.back-top{margin-left:auto;font-size:12px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}:focus-visible{outline:3px solid #82a0fa;outline-offset:3px}@media(max-width:760px){.topbar,main,footer{width:min(100% - 32px,580px)}.topbar{height:68px}.hero{grid-template-columns:1fr;gap:30px;padding:55px 0 62px}.hero h1{font-size:clamp(40px,11vw,58px)}.intro{font-size:15px}.hero-note{max-width:500px}.section-heading{align-items:start;gap:12px}.section-heading h2{font-size:27px}.demo-badge{font-size:10px}.messages{min-height:190px}.principles{grid-template-columns:1fr;gap:14px;padding:24px 0 55px}.principles article{padding:4px 0}footer{flex-wrap:wrap;gap:10px 15px;padding:18px 0}footer>span{flex-basis:100%;order:3}.back-top{margin-left:auto}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important}}