:root{--bg:#0c1423;--panel:#142035;--line:#ffffff19;--mint:#5be2d8;--text:#eef5ff;--muted:#a4b3cb}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 Arial,sans-serif}a{color:inherit}button,input{font:inherit}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--mint);outline-offset:3px}.demo-bar{display:flex;justify-content:space-between;gap:20px;padding:17px max(24px,calc((100vw - 1240px)/2));border-bottom:1px solid var(--line);align-items:center;font-size:12px}.demo-bar>a:first-child{font-weight:800;color:var(--mint);text-decoration:none;letter-spacing:.08em}.demo-bar span{color:var(--muted);font-size:11px}main{max-width:1240px;margin:auto;padding:65px 24px;display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:start}.eyebrow{font-size:12px;letter-spacing:.13em;color:var(--mint);font-weight:700}h1{font-size:clamp(40px,4.5vw,64px);line-height:1.12;letter-spacing:-.04em;margin:20px 0 26px}em{font-style:normal;color:var(--mint)}.intro>p:not(.eyebrow){color:var(--muted);font-size:18px;max-width:520px}.feature{display:flex;gap:20px;margin:25px 0}.feature b{color:var(--mint);font-size:12px;padding-top:4px}.feature strong,.feature span{display:block}.feature strong{font-size:16px}.feature span{color:var(--muted);font-size:14px;margin-top:4px}.note{border-top:1px solid var(--line);padding-top:22px;margin-top:30px;color:var(--muted);font-size:13px}.note strong{color:white}.note p{margin:7px 0 0}.studio-link{display:inline-block;margin-top:24px;font-size:14px;color:var(--mint)}.chat{border:1px solid #35516f;border-radius:18px;overflow:hidden;background:var(--panel);box-shadow:0 25px 80px #0004}.chat-head{display:flex;gap:14px;align-items:center;padding:20px;border-bottom:1px solid var(--line)}.avatar{display:grid;place-items:center;width:46px;height:46px;flex-shrink:0;border-radius:14px;background:var(--mint);color:#142035;font-size:24px;font-weight:700}h2{font-size:18px;margin:0;line-height:1.3}.chat-head p{font-size:12px;color:var(--muted);margin:2px 0}.chat-head button{margin-left:auto;border:1px solid var(--line);background:transparent;color:var(--muted);border-radius:6px;padding:7px 9px;font-size:12px}.messages{height:420px;overflow-y:auto;padding:23px 20px;display:flex;flex-direction:column;gap:14px;background:#101b2d;scroll-behavior:smooth}.bubble{max-width:90%;padding:13px 16px;border-radius:12px;white-space:pre-wrap;overflow-wrap:anywhere;font-size:15px;line-height:1.7;flex-shrink:0}.bubble.bot{align-self:start;background:#25344d;color:#eef5ff;border-bottom-left-radius:3px}.bubble.user{align-self:end;background:#216466;color:white;border-bottom-right-radius:3px}.bubble small{display:block;font-size:10px;color:#a9bdce;letter-spacing:.06em;margin-bottom:5px}.choices{display:flex;flex-wrap:wrap;gap:8px;padding:14px 20px;border-top:1px solid var(--line)}.choices button{background:#21364d;border:1px solid #5be2d844;border-radius:6px;color:var(--mint);padding:9px 13px;font-size:13px}.choices button:hover{background:#27465a}#chatForm{display:flex;gap:10px;padding:0 20px 12px}input{width:100%;min-width:0;color:white;background:#0f192b;border:1px solid #3b4c64;border-radius:6px;padding:12px;font-size:14px}#chatForm button{background:var(--mint);color:#10222b;border:0;border-radius:6px;font-weight:700;font-size:13px;padding:0 14px}.chat-foot{margin:0;padding:0 20px 15px;color:var(--muted);font-size:11px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}@media(max-width:950px){main{gap:35px}.demo-bar{flex-wrap:wrap}.demo-bar span{display:none}h1{font-size:48px}}@media(max-width:700px){main{grid-template-columns:1fr;padding:35px 16px;gap:35px}.intro .feature{display:none}.intro h1{font-size:42px}.intro .note{margin-top:18px}.chat{width:100%;max-width:560px}.messages{height:380px}.chat-head{padding:16px}.demo-bar{padding:14px 16px;font-size:11px}.bubble{font-size:14px}.chat-head button{font-size:11px}.choices{padding:12px 16px}#chatForm{padding:0 16px 12px}.note{font-size:12px}.intro>p:not(.eyebrow){font-size:16px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}