:root{font-family:IBM Plex Sans,Segoe UI,sans-serif;line-height:1.5;color:#182230;background:radial-gradient(circle at 20% 10%,#eef7ff,#f6f8fb,#fff)}*{box-sizing:border-box}body{margin:0}.layout{min-height:100vh}.topbar{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.5rem;background:#0b2f4f;color:#fff}.topbar nav{display:flex;gap:1rem}.topbar a{color:#dceeff;text-decoration:none}.content{max-width:960px;margin:0 auto;padding:1.5rem}.card{border:1px solid #d8e0ea;border-radius:12px;padding:1rem;background:#fff}.form-grid{display:grid;gap:.75rem}input,button{font:inherit;padding:.6rem .75rem;border-radius:8px;border:1px solid #bfd0df}button{cursor:pointer;background:#134d7d;color:#fff;border:none}.error{color:#b00020}.success{color:#0a6b2f}