body{font-family:system-ui,sans-serif;padding:24px;background:#f6f8fa;color:#111}.page{max-width:900px;margin:0 auto;background:#fff;padding:20px;border-radius:6px;box-shadow:0 6px 24px #0000000f}input{display:block;margin:8px 0 12px;padding:8px;width:100%;box-sizing:border-box}button{padding:8px 12px;margin-right:8px}.card{border:1px solid #eee;padding:12px;margin:12px 0;border-radius:6px;background:#fcfcfd}.error{color:#dc143c}