:root{color-scheme:light;--bg:#f5f7fa;--surface:#fff;--text:#172334;--muted:#536174;--border:#ccd5df;--accent:#315eaf;--teal:#e9f4f1}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.55 system-ui,-apple-system,sans-serif}header{display:flex;justify-content:space-between;align-items:center;padding:20px 32px;border-bottom:1px solid var(--border);background:var(--surface)}.brand{font-weight:700;font-size:20px;text-decoration:none;color:var(--text)}.brand span{color:var(--accent);font-weight:500}.pilot,.eyebrow{font-size:13px;color:var(--accent);font-weight:650}.pilot{background:#edf2fb;padding:4px 12px;border-radius:6px}main{max-width:1200px;margin:0 auto;padding:40px 32px}h1{font-size:30px;line-height:1.2;margin:8px 0 16px}h2{font-size:18px;margin:0 0 12px}.intro{max-width:620px;font-size:18px;color:var(--muted)}#welcome{max-width:720px;margin:24px auto}#login{max-width:520px;padding:24px;background:var(--surface);border:1px solid var(--border);border-radius:10px;margin-top:32px}label{display:block;font-weight:600;margin:0 0 8px}input,textarea{font:inherit;width:100%;border:1px solid var(--border);border-radius:6px;padding:12px;background:var(--surface);color:var(--text)}textarea{resize:vertical}button{font:inherit;font-weight:600;cursor:pointer;color:white;background:var(--accent);border:1px solid var(--accent);border-radius:6px;padding:10px 16px;min-height:44px;margin-top:12px}button.secondary{background:var(--surface);color:var(--accent);border-color:var(--border)}button:disabled{opacity:.6;cursor:wait}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid #6689d2;outline-offset:3px}.muted{font-size:14px;color:var(--muted)}.heading{display:flex;gap:24px;align-items:flex-start;justify-content:space-between}.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:32px}.panel{padding:20px;background:#edf2fb;border:1px solid var(--border);border-radius:8px;margin-bottom:20px}.panel.teal{background:var(--teal)}.panel p{font-size:14px}.panel button{width:100%}#messages{min-height:150px}.message{padding:20px 0;border-bottom:1px solid var(--border)}.message .meta{font-size:13px;color:var(--muted);margin-bottom:8px}.message .body{white-space:pre-wrap;overflow-wrap:anywhere}.message.support,.message.operator{border-left:3px solid var(--accent);padding-left:16px}#compose{margin-top:28px}#error{color:#a12222;font-weight:600}#notice{color:#245a49}footer{max-width:1200px;margin:0 auto;padding:24px 32px;color:var(--muted);font-size:13px}#agent{margin-top:20px}#status{max-width:650px}[hidden]{display:none!important}@media(max-width:760px){header{padding:16px}main{padding:24px 16px}.layout{grid-template-columns:1fr;gap:24px}.heading{display:block}h1{font-size:26px}.heading button{margin:0 0 16px}footer{padding:20px 16px}}@media(prefers-color-scheme:dark){:root{color-scheme:dark;--bg:#151d28;--surface:#1e2938;--text:#edf1f8;--muted:#b4c0d1;--border:#465369;--accent:#9bbcff;--teal:#203b37}.panel,.pilot{background:#23344d}button{color:#142238}#error{color:#ffb4b4}#notice{color:#9edcc1}}