:root{--azul:#0b3d91;--fundo:#f4f6fa;--erro:#b00020;--ok:#0a7a3b}
*{box-sizing:border-box}body{margin:0;font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:#111;background:var(--fundo);min-height:100vh;display:flex;flex-direction:column}
header{background:var(--azul);padding:10px 16px}.marca{color:#fff;font-weight:700;text-decoration:none;display:flex;gap:8px;align-items:center}
main{flex:1;width:100%;max-width:520px;margin:24px auto;padding:0 16px}
footer{font-size:13px;color:#555;text-align:center;padding:16px}
.cartao{background:#fff;border-radius:12px;padding:20px;box-shadow:0 1px 4px rgba(0,0,0,.08);margin-bottom:16px}
h1{font-size:22px;margin:0 0 12px}h2{font-size:18px;margin:0 0 10px}
label{display:block;font-weight:600;margin:12px 0 4px}input{width:100%;padding:10px 12px;font-size:16px;border:1px solid #bbb;border-radius:8px}
input:focus{outline:2px solid var(--azul);border-color:var(--azul)}
button{margin-top:14px;padding:11px 16px;font-size:16px;font-weight:700;border:0;border-radius:8px;background:var(--azul);color:#fff;cursor:pointer;width:100%}
button.secundario{background:#e7ecf5;color:var(--azul)}button.perigo{background:#fbe9ec;color:var(--erro)}button:disabled{opacity:.6;cursor:wait}
.linha{display:flex;gap:8px}.linha>*{flex:1}
.erro{color:var(--erro);font-weight:600;margin-top:10px}.ok{color:var(--ok);font-weight:600;margin-top:10px}
.nota{color:#444;font-size:14px}a{color:var(--azul)}
.lista{list-style:none;padding:0;margin:0}.lista li{padding:8px 0;border-bottom:1px solid #eee;display:flex;justify-content:space-between;gap:8px}
code,.codigo{font-family:ui-monospace,Menlo,Consolas,monospace;background:#eef1f7;padding:2px 6px;border-radius:4px;word-break:break-all}
.aviso{background:#fff6e0;border-left:4px solid #e0a400;padding:10px 12px;border-radius:6px;margin:10px 0}