body{font-family:sans-serif;background:#f3f3f3;margin:0}header{display:flex;justify-content:space-between;padding:16px;background:#fff;position:sticky;top:0}main{max-width:700px;margin:auto;padding:16px}.card{background:#fff;border-radius:12px;padding:14px;margin:12px 0;box-shadow:0 2px 5px rgba(0,0,0,.08)}textarea,input,select{width:100%;margin:8px 0;padding:8px;box-sizing:border-box}dialog{border:none;border-radius:12px;width:min(90vw,500px)}small{color:#666}