body{font-family:system-ui,Segoe UI,Roboto,Arial,sans-serif;line-height:1.5;margin:0}
.nav{display:flex;gap:1rem;padding:1rem;background:#111;color:#fff}
.nav a{color:#fff;text-decoration:none}
.wrap{max-width:1000px;margin:2rem auto;padding:0 1rem}
.button{display:inline-block;margin:.5rem 0;padding:.6rem 1rem;border:1px solid #222;border-radius:8px}
.msg{padding:.4rem .6rem;border-bottom:1px solid #eee}
table{width:100%;border-collapse:collapse}
th,td{border:1px solid #ddd;padding:.5rem;text-align:left}
label{display:block;margin:.5rem 0}
input,button,textarea,select{padding:.5rem;border:1px solid #ccc;border-radius:6px;width:100%;max-width:480px}
.error{color:#b00}