body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial;max-width:900px;margin:40px auto;padding:0 16px;}
a{color:#0b5;}
.card{border:1px solid #ddd;border-radius:12px;padding:16px;margin:12px 0;}
.row{display:flex;gap:12px;flex-wrap:wrap;}
input,select,button{padding:10px 12px;border:1px solid #ccc;border-radius:10px;}
button{cursor:pointer;}
.small{color:#666;font-size:14px;}
.err{color:#b00;}
.ok{color:#070;}
table{width:100%;border-collapse:collapse;}
td,th{border-bottom:1px solid #eee;padding:10px;text-align:left;}