:root{--bg:#0b1220;--card:#101a2f;--text:#e8edf7;--muted:#9aa6bf;--accent:#5fa8ff}*{box-sizing:border-box}body{margin:0;font-family:Inter,Arial,sans-serif;background:#fff;color:#0f172a}main{max-width:1080px;margin:0 auto;padding:2rem 1rem 5rem}.hero{background:linear-gradient(120deg,#0b1220,#1e3a8a);color:#fff;padding:2.5rem;border-radius:16px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));grid-gap:1rem;gap:1rem;margin-top:1.25rem}.card{border:1px solid #e5e7eb;border-radius:14px;padding:1rem}.chatFab{bottom:20px;background:#0f62fe;color:#fff;border:0;border-radius:999px;padding:.8rem 1rem;font-weight:700;cursor:pointer}.chatBox,.chatFab{position:fixed;right:20px}.chatBox{bottom:74px;width:360px;max-width:calc(100vw - 24px);height:500px;background:#fff;border:1px solid #dbe1ea;border-radius:14px;display:flex;flex-direction:column;overflow:hidden}.chatHead{background:#0b1220;color:#fff;padding:.8rem 1rem;font-weight:700}.chatMsgs{flex:1 1;overflow:auto;padding:1rem;background:#f8fafc}.msg{margin:.4rem 0;padding:.6rem .75rem;border-radius:12px;max-width:85%}.msg.user{margin-left:auto;background:#dbeafe}.msg.bot{background:#e2e8f0}.chatForm{display:flex;gap:.5rem;padding:.7rem;border-top:1px solid #e2e8f0}.chatForm input{flex:1 1;padding:.6rem;border:1px solid #cbd5e1;border-radius:8px}.chatForm button{background:#0f62fe;color:#fff;border:0;padding:.6rem .8rem;border-radius:8px}